AS8200-8400_SV

8/14/2019 AS8200-8400_SV

1/461

digital equipment corporation

maynard, massachusetts

A lp ha Se rve r 8200/ 8400

Se rv ic e M a n ua l

Order Number EKT8030SV. A01

This manual is intended for Digital service engineers. It includes troubleshootinginformation, configuration rules, and instructions for removal and replacement of

field-replaceable units (FRUs) for AlphaServer 8200 and 8400 systems.

8/14/2019 AS8200-8400_SV

2/461

First Printing, May 1995

The information in this document is subject to change without notice and should not be

construed as a commitment by Digital Equipment Corporation.

Digital Equipment Corporation assumes no responsibility for any errors that may appear in

this document.

The software, if any, described in this document is furnished under a license and may be used

or copied only in accordance with the terms of such license. No responsibility is assumed forthe use or reliability of software or equipment that is not supplied by Digital Equipment

Corporation or its affiliated companies.

Copyright 1995 by Digital Equipment Corporation.

All Rights Reserved.

Printed in U.S.A.

The following are trademarks of Digital Equipment Corporation: AlphaGeneration,

AlphaServer, DEC, DECchip, DEC LANcontroller, OpenVMS, StorageWorks, VAX, the

AlphaGeneration logo, and the DIGITAL logo.

OSF/1 is a registered trademark of the Open Software Foundation, Inc. Prestoserve is a

trademark of Legato Systems, Inc. UNIX is a registered trademark in the U.S. and other

countries, licensed exclusively through X/Open Company Ltd.

FCC NOTICE:The equipment described in this manual generates, uses, and may emit radio

frequency energy. The equipment has been type tested and found to comply with the limits

for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are

designed to provide reasonable protection against such radio frequency interference when

operated in a commercial environment. Operation of this equipment in a residential area may

cause interference, in which case the user at his own expense may be required to takemeasures to correct the interference.

8/14/2019 AS8200-8400_SV

3/461

iii

Contents

Preface ..............................................................................................................xv

C ha p te r 1 O ve rvie w of the Syste m s

1.1 AlphaServer 8400/8200 Overview............................................................1-21.2 TLSB System Bus....................................................................................1-41.3 KN7CC Processor Module .......................................................................1-6

1.4 MS7CC Memory Module.........................................................................1-81.5 KFTHA Module.....................................................................................1-10

1.6 KFTIA Module ......................................................................................1-121.7 AlphaServer 8400 Power Subsystem Overview ......................................1-14

1.8 AlphaServer 8200 Power Subsystem Overview ......................................1-161.9 I/O Buses and In-Cab Storage Devices...................................................1-181.10 Troubleshooting Steps and Tools............................................................1-20

Pa rt 1 Tro ub leshoo ting

C h a p te r 2 Tro ub le sh oo tin g w ith LED s

2.1 Troubleshooting Common to Both Systems..............................................2-22.1.1 Start with the Control Panel...............................................................2-2

2.1.2 Troubleshooting TLSB Modules........................................................2-42.1.3 Troubleshooting a PCI Shelf..............................................................2-6

2.1.4 Troubleshooting StorageWorksShelves..............................................2-82.2 Troubleshooting the 8200 Power Subsystem...........................................2-102.2.1 8200 Power Regulators....................................................................2-10

2.2.2 8200 Cabling...................................................................................2-142.3 Troubleshooting the 8200 Cooling Subsystem........................................2-16

2.4 Troubleshooting the 8400 Power Subsystem...........................................2-182.4.1 8400 AC Input Box .........................................................................2-182.4.2 H7264 Power Regulators .................................................................2-20

2.4.3 H7263 Power Regulators .................................................................2-22

8/14/2019 AS8200-8400_SV

4/461

iv

2.4.4 Cabinet Control Logic (CCL) Module.............................................2-242.5 Troubleshooting the 8400 Blower...........................................................2-262.6 Troubleshooting 8400 XMI and Futurebus+ ...........................................2-28

2.7 Troubleshooting with 8400 XMI and Futurebus+ I/O Module LEDs ......2-302.8 Troubleshooting an 8400 DSSI PIU........................................................2-32

C h a p te r 3 C o nso le Disp la y a nd Dia g n o stic s

3.1 Checking Self-Test Results: Console Display...........................................3-23.1.1 8200 Self-Test...................................................................................3-2

3.1.2 Show Config Display for 8200 ..........................................................3-43.1.3 8400 Self-Test...................................................................................3-63.1.4 Show Config Display for 8400 ..........................................................3-8

3.2 Running Diagnostics the Test Command...........................................3-103.2.1 Testing an Entire System.................................................................3-12

3.2.2 Sample Test Command for PCI .......................................................3-143.3 Identifying a Failing SIMM....................................................................3-163.4 Info Command.......................................................................................3-18

3.5 Show Power Display: 8400 Three-Phase Power.....................................3-203.6 Regulator Info Packets: 8400 Three-Phase Power...................................3-21

3.6.1 Brief Data Packet ............................................................................3-223.6.2 Full Information Data Packet...........................................................3-24

C ha p te r 4 DEC e ve nt Erro r Lo g

4.1 Brief Description of the TLSB Bus...........................................................4-24.1.1 Command/Address Bus .....................................................................4-2

4.1.2 Data Bus............................................................................................4-34.1.3 Error Checking..................................................................................4-3

4.2 Producing an Error Log with DECevent ...................................................4-44.3 Getting a Summary Error Log..................................................................4-54.4 Supported Event Types ............................................................................4-6

4.5 Sample Error Log Entries.........................................................................4-84.5.1 Machine Check 660 Error..................................................................4-8

4.5.2 Machine Check 620 Error................................................................4-124.5.3 DWLPA Motherboard (PCIA) Adapter Error Log ...........................4-174.6 Parse Trees.............................................................................................4-23

4.6.1 Parse Tree for Machine Check 670 Errors .......................................4-234.6.2 Machine Check 660 Errors ..............................................................4-24

4.6.3 Machine Check 630 Error................................................................4-514.6.4 Machine Check 620 Error................................................................4-524.6.5 Adapter Parse Trees.........................................................................4-61

8/14/2019 AS8200-8400_SV

5/461

v

Pa rt 2 TLSB M o d ule s

C ha p te r 5 TLSB M o d ule s

5.1 How to Replace the Only Processor..........................................................5-2

5.2 How to Replace the Boot Processor..........................................................5-45.3 How to Add a New Processor or Replace a Secondary Processor..............5-8

5.4 Processor, Memory, or Terminator Module Removal and Replacement .5-125.5 SIMM Removal and Replacement..........................................................5-145.6 I/O Cable and KFTHA Module Removal and Replacement....................5-18

5.7 KFTIA Module Removal and Replacement............................................5-205.8 FDDI Daughter Card Removal and Replacement ...................................5-22

5.9 NVRAM Daughter Card Removal and Replacement..............................5-245.10 NVRAM Battery Removal and Replacement .........................................5-26

C ha p te r 6 Up da ting Firm w a re

6.1 Booting LFU............................................................................................6-26.2 List...........................................................................................................6-4

6.3 Update .....................................................................................................6-6

6.4 Exit........................................................................................................6-106.5 Display and Verify Commands...............................................................6-12

6.6 How to Update Corrupted Firmware.......................................................6-146.7 How to Modify Device Attributes ..........................................................6-18

Pa rt 3 Alp ha Se rve r 8200 System

C ha p te r 7 Fie ld -Re p la c e a b le Units

7.1 FRUs Accessible from the Front of the Cabinet........................................7-27.2 FRUs Accessible from the Rear................................................................7-4

7.3 FRUs in the Processor System Unit ..........................................................7-67.4 FRUs in the PCI Shelf ..............................................................................7-8

7.5 FRUs in the StorageWorks Shelf............................................................7-107.6 FRUs in the Power Regulator .................................................................7-127.7 Cables ....................................................................................................7-14

C ha p te r 8 C o nfig ura tio n Rule s

8.1 Main Cabinet ...........................................................................................8-28.2 Expander Cabinet.....................................................................................8-4

8.3 Power System...........................................................................................8-6

8/14/2019 AS8200-8400_SV

6/461

vi

8.4 TLSB Card Cage and Storage Drawer ......................................................8-88.5 I/O Interface...........................................................................................8-108.6 Shelves...................................................................................................8-12

8.6.1 PCI Shelf.........................................................................................8-148.6.2 StorageWorks Shelf.........................................................................8-16

C ha p te r 9 C a b ine t C o ntro l Syste m

9.1 Control Panel Removal and Replacement.................................................9-29.2 Cabinet Control Logic Module Removal and Replacement ......................9-4

C ha p te r 10 Po we r Syste m

10.1 Power Regulator Removal and Replacement ..........................................10-210.2 BBU Option Removal and Replacement ................................................10-4

10.2.1 Battery Pack Removal and Replacement .........................................10-410.2.2 Charger Board Removal and Replacement ......................................10-610.3 Power Strip Removal and Replacement..................................................10-8

10.4 Blower Removal and Replacement.......................................................10-10

C h a p te r 1 1 Pro c e sso r Sy ste m Un it

11.1 Clock Module Removal and Replacement..............................................11-2

11.2 Terminator Module Removal and Replacement......................................11-411.3 TLSB Card Cage Removal and Replacement .........................................11-6

11.3.1 Prepare the Cabinet and Remove the Line Filter..............................11-611.3.2 Remove the TLSB Card Cage .........................................................11-811.4 Storage Drawer Removal and Replacement..........................................11-10

C ha p te r 12 PC I She lve s

12.1 PCI Shelf Removal and Replacement.....................................................12-2

12.2 Fan Removal and Replacement ..............................................................12-4

C h a p te r 13 Sto ra g e W o rk s She lv e s

13.1 StorageWorks Shelf Removal and Replacement.....................................13-213.2 Disk Removal and Replacement.............................................................13-4

13.3 Power Supply Removal and Replacement ..............................................13-6

8/14/2019 AS8200-8400_SV

7/461

vii

Pa rt 4 Alp ha Se rve r 8400 System

C h a p te r 14 Fie ld - Re p la c e a b le Units

14.1 FRUs Accessible from the Front of the Cabinet......................................14-2

14.2 FRUs Accessible from the Rear of the Cabinet.......................................14-414.3 FRUs in the Battery Cabinet...................................................................14-6

14.4 FRUs in the PCI Plug-In Unit.................................................................14-814.5 FRUs in the XMI Plug-In Unit .............................................................14-1014.6 FRUs in the Futurebus+ Plug-In Unit ...................................................14-12

14.7 FRUs in the SCSI Storage Plug-In Unit ................................................14-1414.8 FRUs in the DSSI Disk Plug-In Unit ....................................................14-16

14.9 FRUs in the Battery Plug-In Unit .........................................................14-1814.10 Cables ..................................................................................................14-20

C h a p te r 15 C o nfig ura tio n Rule s

15.1 Main Cabinet .........................................................................................15-215.2 Expander Cabinet...................................................................................15-4

15.3 Battery Cabinet ......................................................................................15-6

15.4 Single-Phase Power System....................................................................15-815.5 Three-Phase Power System ..................................................................15-10

15.6 TLSB Card Cage..................................................................................15-1215.7 I/O Interface.........................................................................................15-16

15.8 Plug-In Units........................................................................................15-1815.8.1 PCI Plug-In Unit............................................................................15-2015.8.2 XMI Plug-In Unit..........................................................................15-24

15.8.3 Futurebus+ Plug-In Unit................................................................15-2615.8.4 SCSI Storage Plug-In Unit.............................................................15-2815.8.5 DSSI Disk Plug-In Unit.................................................................15-30

15.8.6 Battery Plug-In Unit ......................................................................15-32

C h a p te r 16 C a b ine t D oo rs a n d Pa n e ls

16.1 Door and Cable Cover Removal and Replacement .................................16-216.2 Top Panel and Air Filter Removal and Replacement ..............................16-4

16.3 Side Panel Removal and Replacement....................................................16-6

C h a p te r 17 C a b ine t C o ntro l Sy ste m

17.1 Control Panel Removal and Replacement...............................................17-2

17.2 CD-ROM Drive Removal and Replacement...........................................17-417.3 Floppy Drive Removal and Replacement ...............................................17-617.4 Local Disk Converter Removal and Replacement...................................17-8

17.5 Cabinet Control Logic Module Removal and Replacement ..................17-10

8/14/2019 AS8200-8400_SV

8/461

viii

C h a p te r 18 Po w e r a n d C o oling Sy ste m s

18.1 Single-Phase Power System....................................................................18-2

18.1.1 H7264 Power Regulator Removal and Replacement........................18-218.1.2 Single-Phase AC Distribution Box Removal and Replacement........18-418.2 Three-Phase Power System ....................................................................18-6

18.2.1 H7263 Power Regulator Removal and Replacement........................18-618.2.2 Three-Phase AC Input Box Removal and Replacement ...................18-8

18.2.3 Three-Phase DC Distribution Box Removal and Replacement.......18-1018.3 Blower Removal and Replacement.......................................................18-12

C ha p te r 19 TLSB C a rd C a g e

19.1 System Clock Module Removal and Replacement..................................19-219.2 TLSB Card Cage Removal.....................................................................19-4

C h a p te r 20 PC I Plug - In Unit

20.1 Option Board Removal and Replacement...............................................20-220.2 Power Board Removal and Replacement................................................20-4

20.3 Motherboard Removal and Replacement................................................20-6

C h a p te r 2 1 X M I a n d Fu tu re b u s+ Plu g - In Un its

21.1 Power Regulator Removal and Replacement ..........................................21-2

21.2 Enclosure and Card Cage Removal and Replacement.............................21-421.3 Air Filter Cleaning .................................................................................21-6

C h a p te r 2 2 SC SI Sto ra g e Plu g - In Un it

22.1 Device Removal and Replacement.........................................................22-2

22.2 Power Supply Removal and Replacement ..............................................22-4

C h a p te r 2 3 D SSI D isk Plu g - In Un it

23.1 Local Disk Converter Removal and Replacement...................................23-2

23.2 Remote Front Panel Removal and Replacement .....................................23-423.3 Disk Removal and Replacement.............................................................23-6

23.4 Power and Signal Harness Removal and Replacement............................23-8

C h a p te r 2 4 Ba tte ry Plu g - In Un it

24.1 Fuse Removal and Replacement.............................................................24-2

24.2 Cable Removal and Replacement...........................................................24-424.3 Battery Removal and Replacement.........................................................24-6

8/14/2019 AS8200-8400_SV

9/461

ix

A p p e n d ix A C o n so le C o m m a n d s a n d En viro nm e n tVar iab les

A.1 Console Commands.................................................................................A-1A.2 Environment Variables............................................................................A-5

A p p e n d ix B H o w to Fin d O p tio n In fo rm a tio n

I n d e x

Examples

31 8200 System Self-Test Console Display...................................................3-232 Show Config Sample................................................................................3-4

33 8400 System Self-Test Console Display ...................................................3-634 Show Config Sample................................................................................3-835 Sample Test Commands.........................................................................3-10

36 Sample Test Command for Entire System..............................................3-1237 Sample Test Command for PCI ..............................................................3-14

38 Console Mode: No Failing SIMMs........................................................ 3-16

39 Console Mode: Failing SIMMs Found...................................................3-17310 Examples of the Info Command.............................................................3-18

311 Show Power Command ..........................................................................3-2041 Producing an Error Log with DECevent...................................................4-4

42 Summary Error Log .................................................................................4-543 OSF Event Type Identification.................................................................4-744 OpenVMS Event Type Identification .......................................................4-7

45 Sample Machine Check 660 Error Log Entry ...........................................4-846 Sample Machine Check 620 Error Log Entry .........................................4-13

47 Sample DWLPA Motherboard Error Log Entry......................................4-1751 Replacing the Only Processor Module......................................................5-252 Replacing the Boot Processor...................................................................5-4

53 Adding or Replacing a Secondary Processor.............................................5-8

61 Booting LFU from CD-ROM ...................................................................6-262 List Command..........................................................................................6-463 Update Command ....................................................................................6-664 Exit Command.......................................................................................6-10

65 Display and Verify Commands...............................................................6-1266 Updating an Unknown Device ............................................................6-1467 Modify Command..................................................................................6-18

8/14/2019 AS8200-8400_SV

10/461

x

Figures

11 AlphaServer 8400 and 8200 System Cabinets...........................................1-1

12 AlphaServer 8400 and 8200 Systems........................................................1-213 TLSB System Bus....................................................................................1-414 General Appearance of TLSB Modules....................................................1-5

15 KN7CC Processor Module .......................................................................1-616 MS7CCBA (128-Mbyte) Memory Module .............................................1-8

17 KFTHA Module.....................................................................................1-1018 KFTIA Module ......................................................................................1-1219 AlphaServer 8400 Power System Overview ...........................................1-14

110 AlphaServer 8200 Power Subsystem Overview ......................................1-16111 AlphaServer 82/8400 I/O Buses and In-Cab Storage...............................1-18

112 Troubleshooting Steps............................................................................1-20113 Troubleshooting Tools ...........................................................................1-2121 Control Panel ...........................................................................................2-2

22 Troubleshooting: Start with the Control Panel..........................................2-223 TLSB Module Status................................................................................2-4

24 PCI FDDI and NVRAM Options on KFTIA.............................................2-525 PCI PIU in an 8400 ..................................................................................2-6

26 PCI Shelf in an 8200 ................................................................................2-727 Troubleshooting a PCI Shelf ....................................................................2-728 Troubleshooting StorageWorks Devices and Shelves ...............................2-8

29 8200 Power Regulators AC Input Side...............................................2-10210 8200 AC Input Troubleshooting Steps....................................................2-11211 8200 Power Regulators DC Output Side ............................................2-12

212 Troubleshooting the DC Side of 8200 Regulators...................................2-13213 Checking Power Connections.................................................................2-14

214 LEDs for Temperature and Cooling Fan Locations.................................2-16215 Troubleshooting the 8200 Cooling System .............................................2-17216 8400 AC Input Box................................................................................2-18

217 8400 AC Input Box Troubleshooting Steps.............................................2-19218 H7264 Power Regulators and Status LEDs .............................................2-20

219 Troubleshooting Steps for H7264 Regulator...........................................2-21220 H7263 Power Regulator LEDs ...............................................................2-22221 H7263 Power Regulator Troubleshooting Steps......................................2-23

222 8400 CCL Module LEDs........................................................................2-24223 CCL Module Troubleshooting Steps.......................................................2-25

224 Blower ...................................................................................................2-26225 Blower Troubleshooting Steps................................................................2-27226 XMI and Futurebus+ Bus Power Regulator ............................................2-28

227 Troubleshooting I/O PIUs.......................................................................2-29228 XMI and Futurebus+ Adapter LEDs.......................................................2-30

229 DSSI Disk Control Panel........................................................................2-32

8/14/2019 AS8200-8400_SV

11/461

xi

31 Hose Numbering Scheme for KFTIA and KFTHA ...................................3-532 Hose Numbering Scheme for KFTIA and KFTHA ...................................3-933 Command Format ..................................................................................3-21

34 Sample Brief Data Packet.......................................................................3-2235 Brief Data Packet Structure ....................................................................3-23

36 Full Information Data Packet Structure ..................................................3-2437 Full Data Packet: Values for Characters 1 6 .......................................3-25

38 Full Data Packet: Values for Characters 7 34.......................................3-2639 Full Data Packet: Values for Characters 35 47.....................................3-27310 Full Data Packet: Values for Characters 48 54.....................................3-28

311 Sample Full/History Data Packet............................................................3-2841 Machine Check 670 Error ......................................................................4-2342 Machine Check 660 Error ......................................................................4-24

43 Machine Check 630 Errors.....................................................................4-5144 Machine Check 620 Error ......................................................................4-52

45 KFTxA Error Parse Tree ........................................................................4-6146 DWLPA Error Parse Tree.......................................................................4-6447 DWLMA Error Parse Tree .....................................................................4-67

51 Processor, Memory, or Terminator Module............................................5-1252 Removing a SIMM.................................................................................5-14

53 SIMM Connector Numbers E2035 Module........................................5-1654 SIMM Connector Numbers E2036 (2-Gbyte) Module........................5-1755 I/O Hose Cable.......................................................................................5-18

56 KFTIA Module ......................................................................................5-2057 FDDI Daughter Card..............................................................................5-2258 NVRAM Daughter Card.........................................................................5-24

59 NVRAM Battery ....................................................................................5-2671 AlphaServer 8200 Cabinet (Front) FRU Locations ...................................7-2

72 AlphaServer 8200 Cabinet (Rear) FRU Locations ....................................7-473 Processor System Unit FRU Locations .....................................................7-674 PCI Shelf FRU Locations .........................................................................7-8

75 StorageWorks Shelf FRU Locations ....................................................... 7-1076 Power Regulator FRU Locations ............................................................7-12

81 Main Cabinet ...........................................................................................8-282 Expander Cabinet.....................................................................................8-483 System with Two Expander Cabinets (Front View) ..................................8-5

84 Power System...........................................................................................8-685 Power Strip ..............................................................................................8-7

86 TLSB Card Card Cage and Storage Drawer..............................................8-887 I/O Interface...........................................................................................8-1088 Location of Shelf Space .........................................................................8-12

89 PCI Shelf and Slot Assignments .............................................................8-14810 StorageWorks Shelf................................................................................8-16

91 Control Panel ...........................................................................................9-2

8/14/2019 AS8200-8400_SV

12/461

xii

92 Cabinet Control Logic Module.................................................................9-4101 Power Regulator.....................................................................................10-2102 Accessing the BBU Option Battery Packs ..............................................10-4

103 Removing the BBU Option Battery Packs ..............................................10-5104 Charger Board Removal .........................................................................10-6

105 Power Strip ............................................................................................10-8106 Blower .................................................................................................10-10

111 Clock Module ........................................................................................11-2112 Terminator Module ................................................................................11-4113 TLSB Line Filter....................................................................................11-6

114 TLSB Card Cage (Rear View)................................................................11-8115 TLSB Card Cage (Front View)...............................................................11-9116 Storage Drawer ....................................................................................11-10

121 PCI Shelf................................................................................................12-2122 PCI Fans ................................................................................................12-4

131 StorageWorks Shelf................................................................................13-2132 StorageWorks Disk ................................................................................13-4133 StorageWorks Power Supply..................................................................13-6

141 Platform Cabinet (Front) Showing FRU Locations .................................14-2142 Platform Cabinet (Rear) Showing FRU Locations ..................................14-4

143 Battery Cabinet Showing FRU Locations ...............................................14-6144 PCI Plug-In Unit Showing FRU Locations .............................................14-8145 XMI Plug-In Unit (Front) Showing FRU Locations..............................14-10

146 Futurebus+ Plug-In Unit (Front) Showing FRU Locations....................14-12147 SCSI Disk Plug-In Unit (Front) Showing FRU Locations .....................14-14148 DSSI Disk Plug-In Unit (Front) Showing FRU Locations.....................14-16

149 Battery Plug-In Unit (Rear) Showing FRU Locations...........................14-18151 Main Cabinet .........................................................................................15-2

152 Expander Cabinet...................................................................................15-4153 System with Two Expander Cabinets (Front View) ................................15-5154 Battery Cabinet ......................................................................................15-6

155 System with Two Battery Cabinets (Front View)....................................15-7156 Single-Phase Power System....................................................................15-8

157 Three-Phase Power System ..................................................................15-10158 TLSB Card Cage (Top View)...............................................................15-12159 I/O Interface.........................................................................................15-16

1510 Location of PIU Quadrants...................................................................15-181511 PCI Plug-In Unit ..................................................................................15-20

1512 PCI Shelf and Slot Assignments ...........................................................15-221513 XMI Plug-In Unit.................................................................................15-241514 Futurebus+ Plug-In Unit.......................................................................15-26

1515 SCSI Storage Plug-In Unit....................................................................15-281516 SCSI Mounting Restrictions .................................................................15-29

1517 DSSI Disk Plug-In Unit........................................................................15-30

8/14/2019 AS8200-8400_SV

13/461

xiii

1518 Battery Plug-In Unit.............................................................................15-32161 Cabinet Door and Cable Cover...............................................................16-2162 Top Panel...............................................................................................16-4

163 Side Panel ..............................................................................................16-6171 Control Panel .........................................................................................17-2

172 CD-ROM Drive......................................................................................17-4173 Floppy Drive..........................................................................................17-6

174 Local Disk Converter .............................................................................17-8175 Cabinet Control Logic Module (Viewed from Front of Cabinet)...........17-10181 H7264 Power Regulators........................................................................18-2

182 Single-Phase AC Distribution Box .........................................................18-4183 H7263 Power Regulators........................................................................18-6184 Three-Phase AC Input Box.....................................................................18-8

185 Three-Phase DC Distribution Box........................................................18-10186 Blower .................................................................................................18-12

191 System Clock Module ............................................................................19-2192 TLSB Card Cage Removal.....................................................................19-4201 PCI PIU Option Boards..........................................................................20-2

202 PCI PIU Power Board ............................................................................20-4203 PCI PIU Motherboard.............................................................................20-6

211 XMI and Futurebus+ PIU Power Regulators...........................................21-2212 XMI and Futurebus+ PIU Enclosure.......................................................21-4213 XMI and Futurebus+ PIU Air Filter........................................................21-6

221 SCSI PIU Devices ..................................................................................22-2222 SCSI PIU Power Supply.........................................................................22-4231 DSSI PIU Underside of Brick Cover Showing Local Disk Converter.23-2

232 DSSI PIU Underside of Brick Cover Showing Remote Front Panel ...23-4233 DSSI PIU Disks......................................................................................23-6

234 DSSI PIU Power and Signal Harness......................................................23-8241 Battery PIU Fuse....................................................................................24-2242 Battery PIU (Rear) Showing Cable Routing ...........................................24-4

243 Battery Hold-Down Brackets..................................................................24-6244 Rear Batteries (Blocks B and C).............................................................24-7

Tables

1 AlphaServer 8200 and 8400 Documentation............................................xvii2 Related Documents ..................................................................................xix

11 Memory Modules and Related SIMMs.....................................................1-921 Control Panel LEDs at Power-Up.............................................................2-3

22 LEDs in a PCI Shelf.................................................................................2-623 SCSI Power Supply LEDs........................................................................2-924 SCSI Device LEDs...................................................................................2-9

25 Troubleshooting the DWZZAVA ...........................................................2-9

8/14/2019 AS8200-8400_SV

14/461

xiv

26 H7263 Power Regulator LED Summary.................................................2-2227 I/O PIU Power Switches Regulator B ................................................2-2828 I/O PIU Power Regulator LEDs..............................................................2-29

29 DWLMA LEDs......................................................................................2-31210 DWLAA Module LEDs..........................................................................2-31

211 Indicator Switches on DSSI Disk Control Panel .....................................2-3331 Explanation of Sample Full/History Data Packet....................................3-29

41 TLSB Address Bus Commands ................................................................4-242 Supported Event Types ............................................................................4-643 Parsing a Sample 660 Error (Example 45) ..............................................4-8

44 Parsing a Sample 620 Error (Example 46) ............................................4-1245 Parsing a DWLPA Motherboard Error (Example 47)............................4-1771 Cables ....................................................................................................7-14

81 PCI/EISA Configuration Rules (KFE70 Installed)..................................8-15141 Cables..................................................................................................14-20

151 Main Cabinet Variants ...........................................................................15-3152 Expander Cabinet Variants.....................................................................15-5153 Memory Module Options .....................................................................15-14

154 Placement of I/O Modules....................................................................15-14155 Configuration Examples.......................................................................15-15

156 PCI/EISA Configuration Rules (KFE70 Installed)................................15-23A1 Summary of Console Commands ............................................................A-1A2 Environment Variables............................................................................A-6

A3 Settings for the graphics_switch Environment Variable...........................A-8

8/14/2019 AS8200-8400_SV

15/461

xv

Preface

Inte nde d Aud ie nce

This manual is written for the customer service engineer.

Doc um e nt Struc ture

This manual uses a structured documentation design. Topics are organized intosmall sections for efficient online and printed reference. Each topic begins with an

abstract. You can quickly gain a comprehensive overview by reading only theabstracts. Next is an illustration or example, which also provides quick reference.Last in the structure are descriptive text and syntax definitions.

This manual has 24 chapters and two appendixes, as follows:

Chapter 1, Overview of the Systems,introduces the AlphaServer 8200 and

8400 systems and gives a brief overview of the system bus modules, and powersubsystem.

Part 1: Troubleshooting

Chapter 2, Troubleshooting with LEDs, tells how to use the LEDs and other

indicators on the AlphaServer 8200 to find problem components in the system.

Chapter 3, Console Display and Diagnostics,tells how to use these tools to

find nonfunctioning components in the system.

Chapter 4, DECevent Error Log,describes how to interpret the error log

produced by this utility program.

Part 2: TLSB Modules

Chapter 5, TLSB Modules,provides procedures for replacing I/O and memorymodules and for replacing or adding processor modules.

Chapter 6, Updating Firmware,describes how to use console commands andthe Loadable Firmware Update (LFU) Utility to update system firmware.

Part 3: AlphaServer 8200 System

Chapter 7, Field-Replaceable Units,describes the components of theAlphaServer 8200 system that are replaceable by field service personnel.

8/14/2019 AS8200-8400_SV

16/461

xvi

Chapter 8, Configuration Rules,provides configuration information for theAlphaServer 8200 main and expander cabinet, power system, TLSB card cageand storage drawer, I/O interface, and PCI and StorageWorks shelves.

Chapter 9, Cabinet Control System,describes how to remove and replacecomponents of the AlphaServer 8200 cabinet control system.

Chapter 10, Power System,tells how to remove and replace components of the

AlphaServer 8200 power system. Chapter 11, Processor System Unit,tells how to remove and replace

components of the AlphaServer 8200 processor system unit.

Chapter 12, PCI Shelves,describes how to remove and replace PCI busshelves.

Chapter 13, StorageWorks Shelves,tells how to remove and replaceStorageWorks shelves and components within StorageWorks shelves.

Part 4: AlphaServer 8400 System

Chapter 14, Field-Replaceable Units,describes the components of the

AlphaServer 8400 system that are replaceable by field service personnel.

Chapter 15, Configuration Rules,provides configuration information for theAlphaServer 8400 main and expander cabinet, power system, TLSB card cage,

I/O interface, and PCI plug-in unit.

Chapter 16, Cabinet Doors and Panels,tells how to remove and replace the

AlphaServer 8400 doors and top and side panels.

Chapter 17, Cabinet Control System,describes how to remove and replace

components of the AlphaServer 8400 cabinet control system.

Chapter 18, Power and Cooling Systems,tells how to remove and replace

components of the AlphaServer 8400 power and cooling subsystems.

Chapter 19, TLSB Card Cage,describes how to remove and insert modules in

the TLSB card cage, and how to remove and replace the card cage itself.

Chapter 20, PCI Plug-In Unit,tells how to remove and replace a PCI plug-inunit in the AlphaServer 8400 system.

Chapter 21, XMI and Futurebus+ Plug-In Units,tells how to remove andreplace these field-replaceable units in the AlphaServer 8400 system.

Chapter 22, SCSI Storage Plug-In Unit,tells how to remove and replace SCSIdisks and tapes from a SCSI PIU.

Chapter 23, DSSI Disk Plug-In Unit,tells how to remove and replace DSSIdisks and tapes from a DSSI PIU.

8/14/2019 AS8200-8400_SV

17/461

xvii

Chapter 24, Battery Plug-In Unit,tells how to remove and replace the BBUfuse, cable, and individual batteries in the battery plug-in-unit.

Appendix A, Console Commands and Environment Variables,is a quickreference for commands.

Appendix B, How to Find Option Information,explains the ways to find

information about options.

C onve ntions Use d in This Doc um e nt

Icons. Icons similar to those shown below are used in illustrations for designatingpart placement in the system described. A shaded area in the icon shows the locationof the component or part being discussed.

RearFront BX-0099-95

Doc um e nta tion Tit le s

Table 1 lists the books in the AlphaServer 8200 and 8400 documentation set. Table2 lists other documents that you may find useful.

Ta ble 1 Alpha Se rver 8200 a nd 8400 Doc um e nta tion

Title O rd e r N um b e r

Hardware User Information and Installation

Operations Manual EKT8030OPSite Preparation Guide EKT8030SP

AlphaServer 8200 Installation Guide EKT8230IN

AlphaServer 8400 Installation Guide EKT8430IN

Service Information Kit QZ00RACGC

Service Manual(hard copy) EKT8030SV

Service Manual (diskette) AKQKNFACA

8/14/2019 AS8200-8400_SV

18/461

xviii

Ta ble 1 Alpha Se rver 8200 a nd 8400 Doc um e nta tion (Co ntinued )


Reference Manuals

System Technical Manual EKT8030TM

DWLPA PCI Adapter Technical Manual EKDWLPATM

Upgrade Manuals for Both Systems

KN7CC CPU Module Installation Card EKKN7CCIN

MS7CC Memory Installation Card EKMS7CCIN

KFTHA System I/O Module Installation Guide EKKFTHAIN

KFTIA Integrated I/O Module Installation Guide EKKFTIAIN

Upgrade Manuals: 8400 System Only

AlphaServer 8400 Upgrade Manual EKT8430UI

BA654 DSSI Disk PIU Installation Guide EKBA654INBA655 SCSI Disk and Tape PIU Installation Guide EKBA655IN

DWLAA Futurebus+ PIU Installation Guide EKDWLAAIN

DWLMA XMI PIU Installation Guide EKDWLMAIN

DWLPA PCI PIU Installation Guide EKDWL84IN

H7237 Battery PIU Installation Guide EKH7237IN

H7263 Power Regulator Installation Card EKH7263IN

H9F00 Power Upgrade Manual EKH8463UI

KFMSB Adapter Installation Guide EKKFMSBIN

KZMSA Adapter Installation Guide EKKXMSXIN

RRDCD Installation Guide EKRRDRXIN

Upgrade Manuals: 8200 System Only

DWLPA PCI Shelf Installation Guide EKDWL82IN

H7266 Power Regulator Installation Card EKH7266IN

H7267 Battery Backup Installation Card EKH7267IN

8/14/2019 AS8200-8400_SV

19/461

xix

Table 2 Re la ted Documents


General Site Preparation

Site Environmental Preparation Guide EKCSEPGMA

System I/O Options

BA350 Modular Storage Shelf Subsystem Configuration Guide EKBA350CG

BA350 Modular Storage Shelf Subsystem User's Guide EKBA350UG

BA350-LA Modular Storage Shelf User's Guide EK350LAUG

CIXCD Interface User Guide EKCIXCDUG

DEC FDDIcontroller 400 Installation/Problem Solving EKDEMFAIP

DEC FDDIcontrolle/Futurebus+ Installation Guide EKDEFAAIN

DEC FDDIcontroller/PCI User Information EKDEFPAIN

DEC LANcontroller 400 Installation Guide EKDEMNAINDSSI VAXcluster Installation/Troubleshooting Manual EK410AAMG

EtherWORKS Turbo PCI User Information EKDE435OM

KZPSA PCI to SCSI Users Guide EKKZPSAUG

RF Series Integrated Storage Element User Guide EKRF72DUG

StorageWorks RAID Array 200 Subsystem Family Installation

and Configuration Guide

EKSWRA2IG

StorageWorks RAID Array 200 Subsystem Family Software

Users Guide for OpenVMS AXP

AAQ6WVATE

StorageWorks RAID Array 200 Subsystem Family SoftwareUsers Guide for DEC OSF/1 AAQ6TGATE

Operating System Manuals

Alpha Architecture Reference Manual EYL520EDP

DEC OSF/1 Guide to System Administration AAPJU7ATE

Guide to Installing DEC OSF/1 AAPS2DETE

OpenVMS Alpha Version 6.2 Upgrade and Installation Manual AAPV6XCTE

8/14/2019 AS8200-8400_SV

20/461

8/14/2019 AS8200-8400_SV

21/461

Overview of the Systems 1-1

C h a p te r 1

O ve rvie w o f the Syste m s

This manual tells how to service two separate, but related, systems. The

AlphaServer 8400 and 8200 systems both use the same system bus (called theTLSB).

The processor, memory, and I/O adapter units that can be configured on this bus arealso the same. The cabinets, and the components they are designed to carry, vary.

Figure 11 Alpha Se rve r 8400 a nd 8200 System C a binets

BX-0118-95

8400 8200

8/14/2019 AS8200-8400_SV

22/461

1-2 Service Manual

1.1 Alpha Se rve r 8400/ 8200 O ve rvie w

The AlphaServer 8400 has a 9-slot system bus, and the cabinet is designed to

house "plug-in units that contain XMI, Futurebus+, and PCI/EISA buses, as

well as SCSI and DSSI I/O devices. The AlphaServer 8200 system has a 5-slot

system bus and is designed to house PCI/EISA buses and SCSI devices.

Fig ure 12 Alpha Se rve r 8400 a nd 8200 System s

AlphaServer 8400

System

Cabinet

I/O

Expander

Cabinet

I/O

Expander

Cabinet

AlphaServer 8200

Rack-mountCab

Departmental Server

Enterprise Server

BX-0119B-94

System

Cabinet

8/14/2019 AS8200-8400_SV

23/461


The AlphaServer 8400 and 8200 systems are described in detail in the TechnicalSummary for these systems. Here are some highlights, concentrating onserviceability.

You will probably find the AlphaServer 8200 system in an office environment. TheAlphaServer 8400 systems are generally found in temperature and humidity

controlled (data center or laboratory) environments.

Troubleshooting aids for both systems include: Easily seen and labeled LEDs and indicators.

A system self-test display that appears on the system console terminal at power-

up. The console software also includes a testcommand for running variousdiagnostics. If the power system includes H7263 regulators, detailed

information on the power system can be requested.

An error log produced by both the OpenVMS Alpha and Digital UNIX operatingsystems for analyzing transient errors.

Removal and replacement procedures for field-replaceable units (FRUs) in theAlphaServer 8200 system are for elements in the system unit (the top part of the

cabinet. Other elements that can be included in the cabinet are one or two AC/DC

power regulators, PCI bus shelves, and SCSI BA350JB shelves. These are mountedwith brackets and screws attached to the cabinet.

AlphaServer 8400 systems can contain a wider variety of I/O buses and hence thesystem self-test includes information on these buses and the I/O adapters in them.

In both systems, the components are accessible from the front and rear doors. Sidepanels can be removed, if necessary, to check or fix cabling. Some components are

heavy and require two people for removal and replacement.

8/14/2019 AS8200-8400_SV

24/461

1-4 Service Manual

1.2 TLSB Sy ste m Bus

Both the AlphaServer 8400 and 8200 systems use the TLSB system bus. The

TLSB is a centerplane in the 8400 system; it offers 9 slots for modules. For an

8200 system, only the "back half" of the bus is used, to offer 5 slots for modules.

Fig ure 1 3 TLSB Syste m Bus

3 2 1 0

Slot 4 5 6 7 8

Power Filter

Front

Processor and Memory Modules

Processor,

Memory, andKFTHA/KFTIA Modules

Centerplane (TLSB)

BX-0111A-94

AlphaServer 8400

45678

KFTIAModule

(Not used)

Front

AlphaServer 8200

Processor,Memory,I/O Modules

8/14/2019 AS8200-8400_SV

25/461

8/14/2019 AS8200-8400_SV

26/461

1-6 Service Manual

1.3 KN7C C Proc e ssor M od ule

Up to six KN7CC modules can be used in an AlphaServer 8400 system, and up

to three in an AlphaServer 8200 system. A processor module contains either

one or two CPU chips.

Fig ure 15 KN7C C Proc e ssor M od ule

BX-0159-AI

1

5

5

6

42

3

Side 1

Side 2

8/14/2019 AS8200-8400_SV

27/461


The KN7CC processor module can have either one (KN7CCAA) or two (KN7CCAB) CPU chips. At the time of this printing, the chips are the DECchip 21164 chips,with a cycle time of 300 MHz.

NOTE: Since the bus cycle time is an integer multiple of the chip cycle time, it is

crucial that the system clock card (see Sections 1.7 and 1.8) and the processor

modules are properly matched. If a bus clock card and processor module(s) cannot

be synchronized, the system will start power-up, but will probably not complete,

halting in the middle of the power-up console display in a way that is hard todiagnose. The part number for the clock card synchronized to 300 MHz CPUs is

542172805.

If one of the CPUs in a dual-CPU processor module is malfunctioning, you

replace the entire module. The chip is not a field-replaceable unit (FRU); themodule is. You will see indications of dual processors on the console display, as

shown in Section 3.1.

Figure 15 shows a two-CPU processor module. The raised blocks in the figure

represent heat sinks that cover the CPU chips. Note that the lightly shaded CPU andB-cache areas are not populated if this is a single-CPU module.

CPU chip(s). The DECchip 21164 operates at supercomputer speeds. It is

an Alpha architecture chip with super-pipelined micro-architecture. The CPUcontrols two levels of on-chip caching and one level of off-chip caching. The

8-Kbyte instruction cache and 2x8-Kbyte data cache are fed from the on-chip96-Kbyte secondary cache.

B-cache. The backup cache on the module is a 4-Mbyte nonpipelined cacheusing 256Kx4 SRAMs.

MMG. The MMG gate array multiplexes the addresses to and from the two

CPU chips to the interface control chip (ADG). In addition, the MMGsupplies write data and is used to perform some Gbus addressing and

sequencing functions.

ADG. The address gate array contains the interface control logic for the CPUchips, the memory multiplexing gate array (MMG), the TLSB bus, and the

data interface gate arrays (DIGAs).

DIGAs. The four data interface gate arrays together assemble the 128-bit

incoming and 256-bit outgoing data from and to the TLSB.

DC-to-DC Converters. These converters step the 48 VDC power supplied by

the power subsystem to the voltages required by the components on theprocessor board.

8/14/2019 AS8200-8400_SV

28/461

1-8 Service Manual

1 .4 M S7 C C M e m o ry M o d u le

The MS7CC memory module comes in five variants offering 128 Mbytes, 256

Mbytes, 512 Mbytes, 1 Gbyte, and 2 Gbytes. Up to seven memory modules can

be installed in an 8400 system; three in an 8200.

Figure 1 6 M S7 CC BA (1 2 8 -M by te ) M e m ory M odule

BX-0160-94

1

2

1

3

3

4

2

5

8/14/2019 AS8200-8400_SV

29/461


All memory modules for the AlphaServer 8400 and 8200 systems have SIMMs(single inline memory modules). DRAMs are mounted on small cards that are fixedto the larger memory module by spring-held mounting clips that grip both sides of

the SIMM. Figure 16 shows:

The array of SIMMs in an MS7CCABA (128-Mbyte) memory module.

The dust cover that protects the connectors into which SIMMs can be plugged to

upgrade the 128-Mbyte module to a 256-Mbyte module.

Memory data interface (MDI) gate arrays that provide the data interfacebetween the TLSB bus and the DRAM arrays. The MDIs contain data buffers,

ECC checking logic, self-test data generation and checking logic, and controland status registers (CSRs).

The control address interface (CTL) gate array that provides the interface to the

TLSB, controls DRAM timing and refresh, runs memory self-test, and containsTLSB and memory-specific registers.

The DC-to-DC converter.

All types of SIMMs for all the memory modules available for AlphaServer 8400

and 8200 systems are field-replaceable. Section 3.3 describes how to isolate a

problem SIMM. When you replace a SIMM, you must be sure that the type ofSIMM matches the module it is designed for, as detailed in Table 11.

Ta ble 1 1 M e m ory M odule s a nd Re la te d SIMM s

M em ory (Size )MotherboardPa rt N um b e r SIM M Pa rt N um b e r

N u m b e ro f SIMM s

MS7CCBA (128 MB) E2035AA 542172401 (8 MB) 16

MS7CCCA (256 MB) E2035AA 542172401 (8 MB) 32

MS7CCDA (512 MB) E2035AA 542172601 (32 MB) 16

MS7CCEA (1 GB) E2035AA 542172601 (32 MB) 32MS7CCFA (2 GB) E2036AA 542171801 (64 MB) 36

8/14/2019 AS8200-8400_SV

30/461

1-10 Service Manual

1.5 KFTHA M od ule

The KFTHA module offers four hose connectors that interface between the

TLSB bus and external buses: XMI, Futurebus+, and PCI/EISA.

Fig ure 17 KFTHA M od ule

BX-0162-94

1

3

3

4

2

5

8/14/2019 AS8200-8400_SV

31/461


The KFTHA module is designed for high-speed, high-volume data transfers. Directmemory access (DMA) transfers are pipelined to allow for up to 500 Mbytes/secondthroughput. The major elements of the KFTHA module are:

RAM to buffer data for the DMA transfers.

Four hose-to-data-path (HDP) chips, each handling 32 bits from two hoses

(I/O cables connecting to an adapter in an associated I/O bus). Data on the

HDPs flow in one direction; either up (to the KFTHA) or down (to theI/O adapter).

Four I/O data path (IDP) chips, which together handle a 256-bit data transfer

to or from the TLSB system bus.

An I/O control chip (ICC) houses the primary control logic for the TLSBinterface.

A DC-to-DC converter that converts the 48 VDC system power to the DCvoltage required by the KFTHA module.

8/14/2019 AS8200-8400_SV

32/461

1-12 Service Manual

1.6 KFTIA M o d ule

The KFTIA module offers an internal peripheral component interconnect (PCI)

bus that connects to various kinds of I/O devices through connectors at the front

of the module. The module also has one hose connector that can interface to a

PCI/EISA, XMI, or Futurebus+ bus.

Fig ure 18 KFTIA M od ule

BX-0154-94

Side view from rear

FDDI options

1

2

3

4

5

6

7

Front view

8/14/2019 AS8200-8400_SV

33/461

8/14/2019 AS8200-8400_SV

34/461

1-14 Service Manual

1.7 Alpha Se rve r 8400 Pow e r Sub syste m O ve rvie w

An AlphaServer 8400 power subsystem has either single-phase or three-phase

AC power input.

Fig ure 19 Alpha Se rve r 8400 Pow e r System O ve rvie w

45

6

7

8

10

BX-0121A-94

9

2

1

Front Rear

3

9

Either single-phase or three-phase AC power enters the system by cable throughthe AC input box. Figure 19 shows a system with single-phase power. Each has

a cabinet circuit breaker and fuses for protection from power surges. The three-phase system offers a port for monitoring voltage and the choice of battery

backup.

8/14/2019 AS8200-8400_SV

35/461


Two kinds of power regulators are available. An H7264 regulator (shown inFigure 19 with the cover plate removed) converts single-phase AC power to 48VDC. A system may use one or two H7264 power regulators, as needed for

power demands (see the Systems and Options Catalogfor power requirements).

The H7263 regulators convert three-phase AC power to 48 VDC and also supply

information for console display. Two or three regulators offer n+1 redundancy;

that is, if one regulator fails, the second or third supplies the needed power. The DC distribution box in back of the H7264 power regulator provides 48VDC

to the system, holding connector points for power distribution (under the graycover) and provides a signal interface between the CCL and the power

regulators. With three-phase power input and H7263 regulator(s), connectorpoints are also available for input from battery-backup units (BBUs) located in

either a BBU plug-in unit (PIU) or from battery expander cabinets.

The cabinet control logic (CCL) module contains logic that monitors signals

from parts of the power system.

The clock module provides the oscillator and logic that governs the frequencywith which signals can be transmitted on the TLSB (bus cycle time). The

clocking scheme supports a bus cycle time of 10 ns, which translates to a systemclock frequency of 100 MHz.

The power filter removes any noise disturbance on the 48V line to supplyconsistent power to the delicate system modules and other components.

The power bus bar delivers 48 VDC power to modules on the system bus. Allslots in the system bus must be filled for proper termination of the bus (fillermodules are supplied as part of the base system).

Modules on the system bus contain DC-to-DC converters that step the powerdown to the voltages required by the particular component.

This connection provides power to the system blower that cools the entiresystem.

48 VDC power is supplied to system plug-in unit housing through receptacleslocated on a crossbar of the PIU housing. (This receptacle is covered by a platethat is removed when a PIU is installed.)

8/14/2019 AS8200-8400_SV

36/461

1-16 Service Manual

1.8 Alpha Se rve r 8200 Pow e r Sub syste m O ve rvie w

The power subsystem consists of those system components that deliver electrical

current to the rest of the system.

Fig ure 110 Alpha Se rve r 8200 Pow e r Sub system O ve rvie w

Individual

Circuit Breakers

Regulator

Circuit Breaker

Rear

1

BX-0146D-95

3

4

Front

MODULEOK

OVERVOLTAGE

OVERTEMP

MODULEOK

OVERVOLTAGE

OVERTEMP

2

3

4

5

7 6

8

10

9

8/14/2019 AS8200-8400_SV

37/461


Single-phase AC power enters the system through the AC input box. The frontview in Figure 110 shows one power regulator. The rear view shows two, to

illustrate how the AC power enters the power strip, and then is routed down tothe two regulators. Two regulators provide n+1 redundancy (that is, if one

fails, the other will supply power).

Each power regulator contains an AC input, two 48 VDC outputs, and(optional) battery backup.

The two DC distribution connectors in the front of the power regulator provide48 VDC to the system. LEDs signal the status of the regulator feeding these

connectors.

The cabinet control logic (CCL) module monitors signals from parts of the

power system and provides error information to the console software. It islocated behind the CCL panel.

The clock module provides the oscillator and logic that governs the frequencywith which signals can be transmitted on the TLSB (bus cycle time). Theclocking scheme supports a bus cycle time of 10 ns; system clock frequencies

may vary. The clock card must support the timing of the processors in theTLSB bus; otherwise, the system will not power up properly.

The power filter removes any noise disturbance on the 48V line, supplyingconsistent power to system modules and other components.

The power bus bar delivers 48 VDC power to modules on the system bus. Allslots must be filled for proper termination of the bus; terminator modules aresupplied as part of the base system.

Modules on the system bus contain DC-to-DC converters that step the powerdown to the voltages required by the particular component.

As shown, 48 VDC power is supplied to the StorageWorks shelves mounted inthe cabinet. The power regulators convert the 48 VDC to the 12, 3, and 5 VDC

power used by the StorageWorks I/O devices. The same type of clips and receptacles used for the StorageWorks shelves

supply 48 VDC power to the PCI card cage. A regulator inside the card cage

converts the 48 VDC to the power used internally.

8/14/2019 AS8200-8400_SV

38/461

1-18 Service Manual

1 .9 I/ O Buse s a nd In -C a b Stora ge De v ic e s

Both the AlphaServer 8200 and 8400 system and expander cabinets are designed

to hold PCI/EISA bus shelves and StorageWorks I/O device shelves. In

addition, the AlphaServer 8400 cabinets can hold XMI and Futurebus+ buses.

Figure 111 Alpha Se rve r 82 / 8400 I/ O Buse s a nd In-C a b Storag e

8200 System Cab

MOD

OK

OV

L

E

OV

P

MOD

OK

OV

L

E

OV

P

9

BX-0183-94

INPUTVOLTAGE

48VDC

INPUTCURRENT

5AMAX

d i g i ta l

INPUTVOLTAGE

48VDC

INPUTCURRENT

28AMAX

MODOK

OC

OT

OV

48V

RESET

V-OUT

DISABLE

M O D O K

OC

OT

OV

48V

PCI

StorageWorks

XMI or Futurebus+(8400 only)

8400 System Cab

8/14/2019 AS8200-8400_SV

39/461


Figure 111 shows an AlphaServer 8200 system cabinet and an AlphaServer 8400system cabinet.

As shown, the PCI/EISA bus and StorageWorks shelves are mounted horizontally inthe 8200 and vertically within enclosures called plug-in units (PIUs) in the8400. Each StorageWorks shelf has room for up to seven devices, including a signal

converter and 3.25-inch disks or tapes. A power unit (DC-to-DC converter) is in thebottom (leftmost) slot of the shelf.

The AlphaServer 8200 cabinets are structured to hold horizontal shelves of roughlythe same height. The system cabinet has five shelf slots; the bottom two can bepower regulators, and the top three can be any combination of PCI/EISA shelves

(starting from the bottom up) or StorageWorks shelves (starting from the top down).Two StorageWorks shelves can be mounted, back to back, in the same shelf slot.

The 8200 expander cabinet is also structured to hold horizontal shelves of about thesame height. The configuration rules for the AlphaServer 8200 are described in

Chapter 8.

The AlphaServer 8400 cabinets can also contain XMI and Futurebus+ buses in PIUs.The system cabinet has four quadrants in the lower part of the cabinet (the XMI PIU

takes two quadrants). Expander cabinets have six quadrants.

Both systems can be connected to the I/O devices of their resident buses andadapters, but these are not housed within the cabinets themselves. StorageWorkscabinets are also available that can hold RAID controllers and other options not

available within the system cabinets.

8/14/2019 AS8200-8400_SV

40/461

1-20 Service Manual

1.10 Trou b le sho oting Step s a nd To ols

Follow steps to isolate system problems. A possible routine is shown below.

Fig ure 112 Trou b le sho oting Step s

Operating system

running

Console software running

Customer experiencesintermittent error: Check

error log (Chapter 4)

Controlpanel LEDs lit

Restart system. Checksystem self-test display(see Chapter 3)

Check power subsystem(see Chapter 2)

No

Yes

No

Yes

BX-0123-94

No

Type "init" command.Check system self-testdisplay (see Chapter 3)

Identify faulty FRU

Power down system and

Boot operating system,check error log (seeChapter 4)

replace FRU. Power up.

You cannot find cause ofuser problem by phone. Goto site and follow these steps.

If system self-test passes,boot operating system.

No

Yes

Identify faulty FRU

Yes

Problem is beyond thescope of this ServiceManual. Call customersupport center for help.

No

Done

Yes

8/14/2019 AS8200-8400_SV

41/461

8/14/2019 AS8200-8400_SV

42/461

8/14/2019 AS8200-8400_SV

43/461

Pa rt 1

Troubleshooting

8/14/2019 AS8200-8400_SV

44/461

8/14/2019 AS8200-8400_SV

45/461

Troubleshooting with LEDs 2-1

C h a p te r 2

Tro ub le sho o ting w ith LEDs

This chapter tells how to use LED displays and other indicators to track down faulty

components that you can replace in the AlphaServer 8200 and 8400 systems.

LEDs give status on the power subsystem, system bus (TLSB) modules (processor,

memory, and I/O), and I/O buses and devices in shelves. The cooling subsystemconsists of fans in various locations and can be checked by looking and listening for

the fans.

Where the systems are similar (TLSB bus and modules), the troubleshootingprocedures described here apply to both. Where they are different (power

subsystem), details of troubleshooting vary.

The sections in this chapter are as follows:

Troubleshooting Common to Both Systems

Start with the Control Panel

Troubleshooting TLSB Modules

Troubleshooting a PCI Shelf

Troubleshooting StorageWorks Shelves

Troubleshooting the 8200 Power Subsystem

8200 Power Regulators

8200 Cabling

Troubleshooting the 8200 Cooling Subsystem

Troubleshooting the 8400 Power Subsystem

8400 AC Input Box

H7264 Power Regulators

H7263 Power Regulators

Cabinet Control Logic (CCL) Module

Troubleshooting the 8400 Blower

Troubleshooting 8400 XMI and Futurebus+

Troubleshooting with 8400 XMI and Futurebus+ I/O Module LEDs

Troubleshooting an 8400 DSSI PIU

8/14/2019 AS8200-8400_SV

46/461

2-2 Service Manual Part 1: Troubleshooting

2.1 Troub le shoo ting C om m on to Both Syste m s

2.1.1 Sta rt w ith the C on trol Pa ne l

Check the control panel lights. The 8200 has three pushbuttons and three LEDs.

The 8400 has a keyswitch and three LEDs.

Fig ure 21 C ontrol Pa ne l

BX-0190-95

Disable

Key On

Fault

Secure

Enable

RunFront

Enable

Run

Fault

On/Off

Secure

Restart

TM

2.88

Front

Restart

LEDs

8200 Pushbuttons 8400 Keyswitch

Figure 22 Trou b leshoo ting : Sta rt w ith the C on trol Pa ne l

Powerbutton/ keyswitch

is Off /Disable(82/8400)

Yes Fix problem identified.

Turn power on and watch power-up.No

As 48-VDC power is passed to the system,initial tests are run on the CPU, memory,and I/O adapters on the system. If the systempasses this power-up testing, the green EnableLED should light. If it does not, look at the consoleterminal display to pinpoint the failing module andreplace the module. Repeat . ( If no consoledisplay, the console terminal may be a TGA(graphics) terminal, connected through a PCI bus.Connect a character-cell terminal through the serialport on the system cabinet. Repeat

A

BX-0175-94

If a faulty component or firmware updatewas identified as the problem, replace thecomponent or update the firmware. If theproblem has not yet been identified, go to

1

2

2

2

2

8/14/2019 AS8200-8400_SV

47/461


Ta b le 2 1 C on trol Pa ne l LEDs a t Pow e r- Up

Act ionKe y O n (8 4 0 0)/ Ena b le (8200) Run Fa ult

Set circuit breaker to On Off Off Off

Press On button (8200) /Turn keyswitch

to Enable (8400)

On Off Slow

Blink

System self-test starts On Off On

Modules pass self-test On Off Off

Module fails self-test On Off On

Three-phase power problem On Off Blink

Operating system boots On On Off

Figure 22 Trou b leshoo ting : Sta rt w ith the C on trol Pa ne l (C on t.)

Check the regulators to see if DC power isleaving the regulator. If so, check the power andsignal lines to the CCL. Check the cabling between

the CCL module and the control panel. If connectionsseem OK, replace CCL. If still no lights on controlpanel, replace control panel. Proceed with

Fault LEDis lit

Some component failed system self-test.If Key On/Enable is green, Fault is lit, andsystem self-tests have completed, replaceany failed component and proceed with

System clock and CPUs are not synchronized.If Key On/Enable is green, Fault is lit, andsystem self-test did not complete, check to see ifthe system clock and the CPUs have different cycletimes. Replace as appropriate and proceed with

No

Any LEDs liton control panel

Status LEDs are not receiving power/signals.No

Yes

Green LED(s)lit

System self-test passed (Key On/Enable is lit);Yes operating system running (Run is lit).

If both green LEDs are lit, system self-test haspassed, and the operating system is running. Checkthe error log (see Chapter 4). Ensure that theproper boot disk is selected to boot the operating system.If Run is not lit, boot the operating system.When the operating system boots, look at the error log.

BX-0175B-95

A

Yes

2

2

4

5

2

3

8/14/2019 AS8200-8400_SV

48/461


2.1.2 Trou b leshoo ting TLSB M o d ule s

You can check individual module self-test results by looking at the status LEDs

on the modules.

Figu re 23 TLSB M o d ule Sta tus

CPU Memory KFTHA KFTIA

BX-0132-94

LEDs

LED

8/14/2019 AS8200-8400_SV

49/461


In general, if a module on the TLSB does not pass self-test (green led is not lit) itshould be replaced.

There are two cases where some removal and replacement action may be needed

even though the module passes self-test.

Failure of the built-in-self-test for the MS7CC modules indicates that testing has

shown that there is no single 64-Kbyte segment of memory that is usable. Each 64-

Kbyte segment must show at least 256 bad pages before it is noted as unusable.However, it is possible for a SIMM to warrant replacement, even though the moduleas a whole passes its self-test.

Also, a KFTIA may contain field-replaceable options that are faulty, even when themodule has passed its self-test. The PCI FDDI option and the PCI NVRAM cardscan be replaced (see below), and, for other options, you may simply disconnect the

I/O option that failed its own self-test, rather than bringing down the whole I/Ooperation handled by the KFTIA, until a replacement module can be found.

You can determine faulty SIMMs and KFTIA options with the show configconsolecommand, as described in Chapter 3.

Figure 24 PCI FDDI a nd N V RAM O p tion s on KFTIA

BX-0171-95

FDDI

option

NVRAM

option

8/14/2019 AS8200-8400_SV

50/461


2.1.3 Troub le sho oting a PC I She lf

LEDs show the status of the power supplies, as well as the adapter self-test

results in the PCI shelf, mounted vertically in the AlphaServer 8400,

horizontally in the AlphaServer 8200.

Figure 25 PCI PIU in a n 8400

BX-0165A-95

2

1

3

4

Hose 48V Power

DWLPA

LED

Numbers

Ta b le 22 LEDs in a PCI She lf

LED No. Meaning When Lit

1 On-board power system OK

2 Motherboard self-test passed

3 48 VDC power supply OK

4 Hose error

8/14/2019 AS8200-8400_SV

51/461


Figure 26 PCI She lf in a n 8200

1 2 3 4DWLPA LED numbers

BX-0174-95

Figure 27 Trou b leshoo ting a PCI She lf

LED 3 lit

No

Check Cabling to PCI shelf. Check to make sure the clip connectors are engaged properly. If so, proceed to

Check 48V Power Supply.

1

Yes

BX-0141-94

12

2

LED 1 litNo

Internal Power System Error. On 8200, check fans. Replace if not running. On 8400, check for jumper cable replacing fan connection.

Replace Power Board.

13

4Yes

NoReplace Motherboard.15LED 2 lit

Yes

LED 4 lit

YesHose Error.16

Some error has occurred in the protocol governing the transfer of data over the hose. Replace the hose first, the motherboard second, the KFTHA or KFTIA third.

8/14/2019 AS8200-8400_SV

52/461


2.1.4 Troub le sho oting Stora g e Wo rksShe lve s

StorageWorks devices are mounted in shelves that are mounted horizontally in

the 8200 system or expander cabinet. In the 8400, a different StorageWorks

shelf is mounted vertically in a PIU. StorageWorks devices can also be mounted

in separate StorageWorks cabinets.

Fig ure 28 Troub le shoo ting Stora g e Wo rks De vic e s a nd She lve s

BX-0733C-95

From aFWD SCSIAdapter

DWZZA-VA

8/14/2019 AS8200-8400_SV

53/461


There are many StorageWorks devices that can be connected to AlphaServer 8200and 8400 systems. Here, the discussion is limited to troubleshooting devices andshelves that are mounted in a StorageWorks shelf in a SCSI PIU in an AlphaServer

system cabinet or expander cabinet.

Ta b le 23 SC SI Pow e r Sup p ly LEDs

Ind ic a to r LED LED Sta te M e a ning

Left (Top) Green LED Off Shelf fault

On Shelf OK

Right (Bottom) GreenLED

Off Power fault

On Power OK

Ta b le 2 4 SC SI De vice LEDs

Ind ic a to r LED LED Sta te M e a ning

Left (Top) Green LED Blinking Data is being transferred to the device.

Off No data transfer to the device is taking

place.

Right (Bottom) Yellow

LED

Blinking Data is being transferred from the

device.

Off No data transfer from the device istaking place.

Ta b le 25 Trou b lesho oting the DW ZZAV A

Ind ic a to r LED M e a ning

None If the power supply LEDs are lit, but the device LEDs are notlit, check to see that the connecting cable is properly seated in

the DWZZAVA and, at the other end, in the FWD adapter.

8/14/2019 AS8200-8400_SV

54/461


2.2 Tro ub le sho o ting the 8 200 Pow e r Sub system

2.2.1 8200 Pow e r Re g ula tors

The 8200 power regulators accept single-phase AC and produce 48 VDC power.

Fig ure 2 9 8200 Powe r Re g ula tors AC Input Sid e

Rear View

1

BX-0146C-95

2

3

4

Rear

AC input cable to AC power strip. (Used wth two regulators.)

Power plugs and cables providing AC input to the individual regulators.

Circuit breakers on power strip. Lower controls left plug; higher controls

right two plugs.

Regulator circuit breaker. (Use power strip breakers if two regulators.).

8/14/2019 AS8200-8400_SV

55/461

8/14/2019 AS8200-8400_SV

56/461


Fig ure 211 8200 Pow e r Re g ula tors DC O utput Sid e

BX-0176-95

MODULEOK

OVERVOLTAGE

OVERTEMP

ON

BATTERY

BATTERYCHARGING

REPLACEBATTERY

+ 48VDC- + 48VDC-

CURRENTSHARE

9 SIGNALS1

10 2

Front

48 VDC Output

to CCL

8/14/2019 AS8200-8400_SV

57/461


Fig ure 212 Troub le shoo ting the DC Sid e of 8200 Re g ula tors

OvertempLED lit

Yes

Check ambient temperature.

If the room temperature is high, there may be a problem with the air conditioning unit

or with airflow conditions in the lab. Correctthat problem and restart the system. If Over-

temp relights, proceed to

Check to see if blowers are running.

1

2

No

If the ambient temperature is OK, then checkto see if the blowers are running. If not, thenthe 48VDC output from the regulator has beenshut off because the internal temperature of theregulator is too high. The regulator is malfunc-

tioning; replace it.

OvervoltageLED lit

Yes

4

Turn off AC power, wait 30 seconds, retry.

If this LED is lit, more than 48 VDC is being output from the regulator. Turn off the AC power, wait 30 seconds; turn on the AC breaker and power system up again. If you do this several times and the Overvoltage LED relights, proceed to

Disconnect the 48V lines leaving the regulator.

An Overvoltage condition could occur if there is a short in the lines leaving the regulator. Turn off AC power and disconnect the cables from the leads at the DC side of the regulator, then turn on

the AC breaker. If the Overvoltage LED lights,the problem is the regulator. Replace it.

Otherwise, turn off the power and check the cabling for shorting.

BX-0181-95

MOD OK LED unlit

2

3

4

8/14/2019 AS8200-8400_SV

58/461


2.2.2 8200 C a b ling

If some component of the system is not working, or its LEDs are not lit, check

the cabling to the device or component.

Figure 213 C he c king Pow e r C onne c tions

Front View

MODULEOK

OVERVOLTAGE

OVERTEMP

MODULEOK

OVERVOLTAGE

OVERTEMP

Rear View

1

2

3

4

BX-0146B-94

55

8/14/2019 AS8200-8400_SV

59/461


Check to make sure that the main AC power cable is plugged into the ACpower strip (two regulators) or the one regulator in the system.

Make sure that, if battery backup is in use, it is functioning.

Make sure that the 48 VDC cables are plugged into the outlets in the regulator.

Check the connections to the PCI shelf and StorageWorks shelves. Check all the cabling that can be seen. Cabling to the TLSB bus enters the

control panel, goes beneath the bottom of the bus (see arrow), and reappearsnear the clock card at the back to supply power to the 48 VDC power bus baron the centerplane. If there appears to be a problem with power supply to the

bus, remove the front panel and check that power and signal cablingconnections are in order.

8/14/2019 AS8200-8400_SV

60/461


2.3 Tro ub le sho o ting the 820 0 C oo ling Sub system

The cooling subsystem of the AlphaServer 8200 system consists of several fans.

One is located directly under the system bus, behind the control panel. Others

are located in the power regulators and in the individual PCI and I/O shelves.

Fig ure 214 LEDs for Te m p e ra ture a nd C oo ling Fan Loc a tions

Front View

MODULEOK

OVERVOLTAGE

OVERTEMP

MODULEOK

OVERVOLTAGE

OVERTEMP

Rear View

2

BX-0177-95

3

14

8/14/2019 AS8200-8400_SV

61/461

8/14/2019 AS8200-8400_SV

62/461


2.4 Tro ub le sho o ting the 8 400 Pow e r Sub system

2.4.1 8400 AC Input Box

There are two kinds of AC input box for AlphaServer 8400 systems, depending

on the type of regulator used.

Fig ure 216 8400 AC Inp ut Box

BX-0135-94

Rear

Three-Phase Power

Single-Phase Power

Rear

8/14/2019 AS8200-8400_SV

63/461


Figu re 217 8400 A C Input Box Troub le shoo ting Step s

Rear

Main ACcircuit breaker

tripped

Yes

Check for breaker trip due to power surge.

BX-0126-94

1

oo

1

CircuitBreaker On

Circuit Breaker Tripped

Green

Three-Phase Power

Rear

Single-Phase P