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Text of Pasolink Maintenance

PASOLINK/PASOLINK+ Maintenance Quick Reference

Rev. 02 : 2003.September

NEC Corporation

PASOLINK Maintenance Quick Reference

Table of Content1 1.1 1.2 2 INTRODUCTION ........................................................................................................... 1 Purpose ....................................................................................................................................1 Reference Manuals..................................................................................................................1 MAINTENANCE SERVICE OVERVIEW ....................................................................... 2 2.1.1 2.1.2 2.1.3 3 3.1 3.2 Service Summary ..............................................................................................................2 Precautions........................................................................................................................2 Test Equipment .................................................................................................................2

PREVENTIVE MAINTENANCE .................................................................................... 3 Frequency of Preventive Maintenance..................................................................................3 Preventive Maintenance Procedures .....................................................................................4 Radio Equipment ..............................................................................................................4 Aerial Equipment ..............................................................................................................6 Interface Cables and Connectors.......................................................................................7

3.2.1 3.2.2 3.2.3 3.3 4 4.1

Preventive Maintenance Flowchart.......................................................................................8 CORRECTIVE MAINTENANCE.................................................................................... 9 Corrective Maintenance Procedures .....................................................................................9 Radio Equipment ..............................................................................................................9 Aerial Equipment ............................................................................................................13 Interface Cables and Connectors.....................................................................................14

4.1.1 4.1.2 4.1.3 4.2 4.3

Corrective Maintenance Flowchart.....................................................................................15 List of Alarms ........................................................................................................................16

APPENDIX A PREVENTIVE MAINTENANCE CHECKLIST............................................. 34 APPENDIX B SITE INVENTORY DATA RECORD SHEET............................................... 39

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1

Introduction1.1 PurposeThis document is designed as a quick reference guide for maintenance service of the PASOLINK/PASOLINK+ system.

1.2

Reference ManualsThe following list of manuals is recommended to be referenced during maintenance of the PASOLINK equipment.

No. 1 2 3 4 5

Title PASOLINK Installation Manual (1+0 System) PASOLINK Instruction Manual PASOLINK+ Instruction Manual (1+0/1+1 System) Pasolink Network Management Terminal Operation Manual Pasolink Network Management System Operation Manual, WindowsNT Version

Manual No. ROI-S03508 ROI-S04614 ROI-S04755 ROI- S04060 ROI-S04067

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2

Maintenance Overview2.1.1 SummaryThere are two types of Maintenance defined in the PASOLINK/ PASOLINK+ system, namely, preventive (periodic) maintenance and corrective maintenance. The customer is recommended to perform preventive maintenance according to the instruction in Chapter 3 Preventive Maintenance of this manual. Upon discovery of fault in the system, the customer should follow the corrective maintenance procedures detailed in Chapter 4 Corrective Maintenance of this document.

2.1.2

PrecautionsDanger: Around 43V DC power (Depends on IF cable length) is superimposed on the center conductor of the coaxial cable between the IDU and ODU. Connecting a measurement set may damage that set. Touching the coaxial cable core may cause electrical shock. Caution: To protect the internal circuits against electrostatic discharge, engineers are requested to wear the wristband and connect it to the frame ground for Electrostatic Protection (ESP) before detaching the top cover. (a) Before beginning maintenance, notify the opposite station that maintenance is about to begin. (b) After equipment starts-up, allow the equipment to warm up for at least 30 minutes. (c) During maintenance, set the IDU to maintenance mode using a PNMT according to the user manual. (d) After completing the maintenance operation, restore all connections to normal.

2.1.3

Test EquipmentThe test equipment and special accessories described in Table A are required for system maintenance. If recommended test equipment and accessories are not available, equivalents may be used.

Table-A Test Equipment and Accessories RequiredTest Equipment/Accessory Headset Personal Computer (PC) with RS-232C cable for IDU Touch-up paint Remarks PNMT software installed For antenna Qty Reqd 1 each 1 set 1 set

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Torque wrench, spanner, screwdrivers, tape, vinyl tape Self bounding tape, vinyl tape

For fixing point For waterproof treatment

1 set 1 set

3

Preventive MaintenanceThis section describes the maintenance work that should be performed on a periodical basis in order to maintain the system at its highest quality. It should be performed by fully qualified personnel to ensure proper performance of the system and safety at the operation site.

3.1

Frequency of Preventive MaintenanceTo ensure continuously satisfactory operation of the system, perform the preventive maintenance on a timely basis recommended as follows. 1st: Three (3) months after the start of operation. 2nd: Twelve (12) months after the start of operation. 3rd and after: Every one (1) year. The customer is recommended to make use of Preventive Maintenance Checklist from Appendix A of this document for recording purpose.

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3.2

Preventive Maintenance ProceduresRadio Equipment1. Visual inspection. Visually inspect ODU and IDU for surface damage or abnormal appearance and check looseness of bolts and nuts. Visually inspect ODU and IDU for surface damage or abnormal appearance and check looseness of bolts and nuts. 2. Meter reading a-1) Connect the PNM Terminal (PC) to the LA PORT of the IDU using RS-232C cable. (In case on PASOLINK) a-2) Connect the PNM Terminal (PC) to the PNMT PORT of the IDU using RS-232C cable. (In case on PASOLINK) b) Set the PNMT to show ODU monitoring data according to the procedure in the PNMT user manual. c) When the system is in normal working condition, result shall be the values shown in Table B below.

3.2.1

Table. B Meter Reading from IDU (PASOLINK V3)Check Item ODU primary power supply voltage Transmitter Power Receiving Level Allowable Range 3:5 to 4.5V DC (35 to 45V DC) (Depending on cable length between ODU and IDU) 0 to 4.6 V DC Relative to the recorded value in the site inventory data record (see Appendix B) 0.2 to 4.5V DC (depending on received signal level)

Table. C Meter Reading from IDU (PASOLINK V4)Check Item Transmitter Power Receiving Level Allowable Range +0 to 4.6 V DC Relative to the recorded value in the site inventory data record (see Appendix B) 0.8 to 4.4V DC (depending on received signal level)

Table. D Meter Reading from IDU (PASOLINK+)

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3. Check configurations a) Check the condition setting of the IDU according to the procedure in the PNMT user's manual. b) Confirm if the condition setting is appropriate according to the site inventory data. c) The latest configuration file shall be uploaded and stored. Also, the Equipment Configuration Parameter shall be recorded and filed as site inventory data record. Note: A copy of Site Inventory Data Record sheet is provided in Appendix B.

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3.2.2

Aerial Equipment1. At first perform visual inspection. Visually inspect antenna and associated mounting structures and Hybrid Combiner (if applicable) for surface damage or abnormal appearance. 2. Check for loose bolt connections. Make sure that all bolts and nuts are tightened to the specified torque. 3. Rust prevention a) Repainting should be carried out every two years to maintain high corrosion resistance and appearance of the antenna. However the period may change if rusting or exfoliation occurs earlier. b) For antenna, clean first by removing oil and dirt completely with solvent and then washing with water. Then apply top coat with ally alkyd enamel diffusive paint (belcoat No.5500) or equivalent. c) For hot dip galvanized parts of the steel structure, first completely remove rust, dirt, etc. on the position causing exfoliation of plating. Then apply Amercoat No.160 with a brush or sprayer (Thickness: more than 70 microns) manufactured by Amercoat (AMERCOAT EUROPE). Note that more than 70 microns is roughly amount to one (1) or two (2) times of p