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Diagrma de Modular LG MCV1306
Citation preview
Mini Hi-Fi SystemSERVICE MANUAL
MODEL: MCV1306 (MCV1306, MCS1306F/S/W)CAUTIONBEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONSIN THIS MANUAL.
MO
DE
L: M
CV
1306 (MC
V1306, M
CS
1306F/S
/W)
SE
RV
ICE
MA
NU
AL
P/NO : AFN74972291 AUGUST, 2011
Website http://biz.lgservice.comInternal Use Only
CONTENTS
SECTION 1 ........GENERAL
SECTION 2 ........CABINET & MAIN CHASSIS
SECTION 3 ........ELECTRICAL
SECTION 4 ........REPLACEMENT PARTS LIST
1-1
SECTION 1
SUMMARY
CONTENTS
SERVICING PRECAUTIONS ................................................................................................................... 1-3
ESD PRECAUTIONS .................................................................................................................................. 1-5
SERVICE INFORMATION FOR EEPROM .......................................................................................... 1-6
PROGRAM DOWNLOAD GUIDE ........................................................................................................... 1-7
SPECIFICATIONS ..................................................................................................................................... 1-10
1-2
NOTES REGARDING HANDLING OF THE PICK-UP1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use.2) The pick-up should never be subjected to external pressure or impact.
2. Repair notes1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board.
3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched.
4) Laser beams may damage the eyes!Absolutely never permit laser beams to enter the eyes!Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
5) Cleaning the lens surfaceIf there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton swab should be used, taking care not to distort lens.
6) Never attempt to disassemble the pick-up.Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
Storage in conductive bag Drop impact
NEVER look directly at the laser beam, and dont allow contact with fingers or other exposed skin.
Magnet
How to hold the pick-up
Conductive Sheet
Cotton swab
Pressure
Pressure
1-3
SERVICING PRECAUTIONS
NOTES REGARDING COMPACT DISC PLAYER REPAIRS1. Preparations1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components
are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components can be damaged, and for that reason components should be handled with care.
2) The pick-up is composed of many optical components and other high-precision components. Care must be taken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnet-ism is present, or where there is excessive dust.
2. Notes for repair1) Before replacing a component part, first disconnect the power supply lead wire from the unit2) All equipment, measuring instruments and tools must be grounded.3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is because there is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron should be grounded.5) Workers should be grounded by an armband (1 M)6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent stat-
ic electricity changes in the clothing to escape from the armband.7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.
Resistor(1 M) Conductive
Sheet
Resistor(1 M)
Armband
1-4
Electrostatically Sensitive Devices (ESD)Some semiconductor (solid state) devices can be damaged easily by static electricity. Such componentscommonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integratedcircuits and some field-effect transistors and semiconductor chip components. The following techniques shouldbe used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain offany electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear acommercially available discharging wrist strap device, which should be removed for potential shock reasonsprior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ESD devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESDdevices.
6. Do not remove a replacement ESD device from its protective package until immediately before you areready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together byconductive foam, aluminum foil or comparable conductive materials).
7. Immediately before removing the protective material from the leads of a replacement ESD device, touch theprotective material to the chassis or circuit assembly into which the device will by installed.
CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER SAFETY PRECAUTIONS.
8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motionsuch as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ESD device).
CAUTION. GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED DANGEROUS VOLTAGE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THESERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.
1-5
ESD PRECAUTIONS
POWER ON
FLD no disc status
Remote control + Front STOPpush same timing during 5s
FLD OP-0.
Move to appropriate position and make changes with remote control.
( , , / , REPEAT )
Press STOP key
FLD write ok
Remote control +Front STOP push same timing
FLD E2P CLR
Completed
NAME
OP0 OP1 OP2 OP3 OP4 OP5 OP6 OP7 OP8 OP9
DETECT NEW EEPROM(OPTION EDIT SCREEN)
HEX
0500000000699007D009
1-6
SERVICE INFORMATION FOR EEPROM
1. AUDIO PROGRAM
Download program file name must be MCV1306_YYMMDDX.HEX If security program (Water Wall) is activated on your PC, you must save the file to the usb storagedevice and disable the security software, then download the file to your set.
Caution: When downloading the file, you should neither unplug the usb device, change to the otherfunction, nor power off the device. Usb device must be unplugged when the downloadingprocess is completed.
ON VFD DISPLAY SCREEN
NO USB
Insert usb device at usb functionREAD
FIRMWARE
WRITE 00 .. 100
UPDATED
POWER OFF AUTOMATICALLY When completed, remove usb device.
1-7
PROGRAM DOWNLOAD GUIDE
2. CD PROGRAM
Download program file name must be HD003_DATE_00.BIN If security program (Water Wall) is activated on your PC, you must save the file to the usb storagedevice and disable the security software, then download the file to your set.
Caution: When downloading the file, you should neither unplug the usb device, change to the otherfunction, nor power off the device. Usb device must be unplugged when the downloadingprocess is completed.
ON VFD DISPLAY SCREEN
NO USB
Insert usb device at usb functionREAD
FIRMWARE
FINISH
UPDATED
POWER OFF AUTOMATICALLY When completed, remove usb device.
1-8
3. BEAT BOX PROGRAM
Download program file name must be BEAT_BIN_DATE_00.BIN If security program (Water Wall) is activated on your PC, you must save the file to the usb storagedevice and disable the security software, then download the file to your set.
Caution: When downloading the file, you should neither unplug the usb device, change to the otherfunction, nor power off the device. Usb device must be unplugged when the downloadingprocess is completed.
ON VFD DISPLAY SCREEN
NO USB
Insert usb device at usb functionREAD
FIRMWARE
FINISH
UPDATED
POWER OFF AUTOMATICALLY When completed, remove usb device.
1-9
SPECIFICATIONS
GENERALPower requirements Refer to main labelPower consumption Refer to main labelDimensions (W x H x D) 285 x 388 x 351 mm without footNet Weight (Approx.) 7.2 kgOperating temperature 5 C to 35 C (41 F to 95 F)Operating humidity 5 % to 90 %Bus Power Supply USB DC 5 V 500 mA iPod DC 5 V 1 A
INPUTS/ OUTPUTSANALOG AUDIO IN 1.2 Vrms (1 kHz), 600 , RCA jack (L, R) x 1PORT. IN 0.5 Vrms (3.5 mm stereo jack)ANALOG AUDIO OUT 800 mVrms (1 kHz), 600 , RCA jack (L, R) x 1
TUNERFM Tuning Range 87.5 to 108.0 MHz or 87.50 to 108.00 MHzAM Tuning Range 522 to 1 620 kHz, 520 to 1 710 kHz or 522 to 1 710 kHz
AMPLIFI ERStereo mode 270 W + 270 W (4 at 1 kHz)Surround mode Front 270 W + 270 W (4 at 1 kHz, THD 10 %) Rear 150 W + 150 W (8 at 1 kHz, THD 10 %) Subwoofer1 270 W (4 at 60 Hz, THD 10 %) Subwoofer2 270 W (4 at 60 Hz, THD 10 %)
CDFrequency Response 40 to 20 000 HzSignal-to-noise ratio 75 dBDynamic range 80 dB
SPEAKERSFront speakerType 2 Way 2 speakerImpedance 4 Rated Input Power 270 WMax. Input power 540 WNet Dimensions (W x H x D) 263 x 460 x 358 mmNet Weight 7.3 kg
Rear speakerType 2 Way 2 speakerImpedance 8 Rated Input Power 150 WMax. Input power 300 WNet Dimensions (W x H x D) 198 x 338 x 258 mmNet Weight 3.1 kg
Passive subwoofer 1/ 2Type 1 Way 1 speakerImpedance 4 Rated Input Power 270 WMax. Input power 540 WNet Dimensions (W x H x D) 347 x 457 x 355 mmNet Weight 8.4 kg
Design and specifications are subject to change without notice.
1-10
SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (CDM-H1803) ........................ 2-21. ORDER OF DISASSEMBLY FOR MECHANISM DECK .......................................................................... 2-22. ORDER OF ASSEMBLY FOR MECHANISM DECK ................................................................................ 2-6
EXPLODED VIEWS ................................................................................................................................... 2-111. CABINET AND MAIN FRAME SECTION (MCV1306) ............................................................................ 2-112. MECHANISM DECK SECTION (CDM-H1803) ....................................................................................... 2-133. PACKING ACCESSORY SECTION ....................................................................................................... 2-154. SPEAKER SECTION .............................................................................................................................. 2-16
2-1
2-2
DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (CDM-H1803)1. ORDER OF DISASSEMBLY FOR MECHANISM DECK
Figure 1
1) Disassemble the Cover Guide Disc.
2
1
Figure 3
3) Pull up the Holder 1 to completely disassemble the Tray Loading Assy from the Base Main Assy.
3
2
1
Figure 2
2) Disassemble the Loading FFC from the Main PCB Assy.Turn the Gear in OPEN direction as shown in Figure 2 to take out the Tray Loading Assy in 3 direction.
2-3
ORDER OF DISASSEMBLY FOR MECHANISM DECK
2
14) Loosen the screw to pull up and disassemble the Tray Disc.
Figure 4
6) Disassemble the Gear Tray, Tray Motor Assy and Loading PCB Assy from the Tray Loading.
Figure 6
5) Loosen the screw to pull up and disassemble the Gear Tray CAM.
Figure 5
2-4
ORDER OF DISASSEMBLY FOR MECHANISM DECK
1
2
3
Figure 7
9) Push the Guide UD in direction 1 to disassemble it from the Base Main.
8) Disassemble each gear part, Clamp Disc, Clamp Magnet and Cover Plate from the Base Main.Disassemble the Loading Motor Assy by being careful of the hook on the surface of the Base Main.
7) Disassemble the Harness Cable from the Base Main.Disassemble the Base Sled Assy from the Base Main by referring to Figure.
3
2
1
Figure 8
2
1
Figure 9
2-5
ORDER OF DISASSEMBLY FOR MECHANISM DECK
1
2
3
4
10) Use a solder to remove the Motor Jump Wire from the Main PCB Assy and then disassemble the FFC Cable.Loosen the screw to disassemble the Main PCB Assy.
Figure 10
2-6
2. ORDER OF ASSEMBLY FOR MECHANISM DECK1) Assemble the Loading Motor Assy to the Base Main.(When assembling the Motor Assy, use the hook on the surface of the Base Main to preassemble, and then tighten the screws.)
Figure 1
Figure 2
12
3
2) Set the Guide UD on the Base Main.After setting the part, push it in direction 3.
2-7
3) Set the Gear Loading 1 and Gear Pulley 2 on the Base Main.Hang the belt between the Gear Pulley and Motor Pulley.Assemble the Clamp Disc, Clamp Magnet and Cover Plate to the Base Main.
4) After setting the Gear Main 2, Gear Pu Up 3 and Gear Pu Down 4 on the Base Main, tighten the screws.After assembling the Gear Main, align the location as shown in Figure.
ORDER OF ASSEMBLY FOR MECHANISM DECK
1
2
Figure 3
Figure 4
2
3
4
1
2-8
ORDER OF ASSEMBLY FOR MECHANISM DECK
1
2
Figure 5
45
3
2
1
Figure 6
5) After setting the Main PCB Assy on the Base Main, tighten the screw. (Set the part accurately on the hook)Solder the Motor Jump Wire on the PCB set on the Base Main.
6) Set the Base Sled Assy on the Base Main.(When setting the part, assemble with the CAM part of the Guide UD inserted in two locations of the Boss of Frame UD)Align the FFC to the Guide and connect the Harness Cable.
2-9
Figure 7
2
1
Figure 8
7) After setting the Gear Tray, Tray Motor Assy and Load-ing PCB Assy on the Tray Loading, tighten the screw.
8) Assemble the Gear Tray CAM on the Tray Loading and set the Tray Disc.(When assembling, check the location of the Gear Tray CAM and Tray Disc as shown in the Figure)
ORDER OF ASSEMBLY FOR MECHANISM DECK
2-10
1
2
3
Figure 9 Figure 10
9) Assemble the Tray Loading Assy on the Base Main Assy as shown in the Figure.After assembling, insert the Loading FFC to the 5 Pin Wafer of Main PCB Assy.
10) After setting the Cover Guide Disc, tighten the screw.
ORDER OF ASSEMBLY FOR MECHANISM DECK
2-11 2-12
EXPLODED VIEWS1. CABINET AND MAIN FRAME SECTION (MCV1306)
H
J
F
E
G
I
DC
A26
267
264
A49
A43
268
269
300
464
464
464
464
464
464
464
464
464
464270
A45
A42
CABLE1
CABLE7
CABLE6
CABLE2
iPod
VOLUME
VFD
USB
464
A
B
E
A
B
F
HD
G
I
J
C
A46
265463
464
464
463
463
A47
266MAIN
SMPS
CN102
251
255B
255A
255C
492
463
266A
269
A44
271
464
464
274
274 465272
CN101
NOTES) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICELITERATURE.
2-13 2-14
2. MECHANISM DECK SECTION (CDM-H1803)MEMO
A02
A01
153A
012B
012B
012A
151 416
153
159
155
177
182
416
417
417
001
002
003
173
172
166
167
164 175
440
012
137
012
012
012
010
180
162
163
165
422
422
421
421
421
421
A26
443
443443
156
2-15
801 Owners Manual
804 Bag
802 Box
910 Cover
900 Remote Control
824 AM Loop Antenna
808 Battery
825 FM Wire Antenna
803 Packing
AA
AA
AA
3. PACKING ACCESSORY SECTION
2-16
A60R A60L
4. SPEAKER SECTION 4-1. FRONT SPEAKER (MCS1306F)
2-17
A80R A80L
4-2. REAR SPEAKER (MCS1306S)
2-18
A90
4-3. PASSIVE SUBWOOFER (MCS1306W)
SECTION 3 ELECTRICAL
CONTENTSTRAINING MASTER ................................................................................................................................... 3-2
1. NO SOUND FROM SPEAKERS ............................................................................................................ 3-22. NO SOUND IN AUX FUNCTION ............................................................................................................ 3-33. NO SOUND IN PORT. IN FUNCTION ................................................................................................... 3-44. NO SOUND IN IPOD FUNCTION .......................................................................................................... 3-55. NO SOUND IN AM/FM FUNCTION ....................................................................................................... 3-66. NO SOUND IN CD FUNCTION .............................................................................................................. 3-77. NO SOUND IN USB FUNCTION ............................................................................................................ 3-98. NO POWER .......................................................................................................................................... 3-10
ONE POINT REPAIR GUIDE ................................................................................................................. 3-111. NO POWER .......................................................................................................................................... 3-112. NO BOOTING WHEN POWER ON THE SET ..................................................................................... 3-133. VFD IS NOT DISPLAYED WHEN POWER ON THE SET ................................................................... 3-144. NO OPERATION OF MD ..................................................................................................................... 3-155. NO SOUND .......................................................................................................................................... 3-21
ELECTRICAL TROUBLESHOOTING GUIDE .................................................................................. 3-291. POWER SUPPLY ON SMPS BOARD ................................................................................................. 3-292. SYSTEM PART .................................................................................................................................... 3-333. NO AUDIO PART ................................................................................................................................. 3-344. DIGITAL AUDIO AMP CHECK ............................................................................................................. 3-39
WAVEFORMS ............................................................................................................................................. 3-40
WIRING DIAGRAM ................................................................................................................................... 3-43
BLOCK DIAGRAMS ................................................................................................................................. 3-451. OVERALL BLOCK DIAGRAM .............................................................................................................. 3-452. SMPS BLOCK DIAGRAM..................................................................................................................... 3-473. POWER BLOCK DIAGRAM ................................................................................................................. 3-49
CIRCUIT DIAGRAMS ............................................................................................................................... 3-511. SMPS CIRCUIT DIAGRAM .................................................................................................................. 3-512. MICOM CIRCUIT DIAGRAM ................................................................................................................ 3-533. PWM CIRCUIT DIAGRAM .................................................................................................................... 3-554. AMP CIRCUIT DIAGRAM ..................................................................................................................... 3-575. DSP CIRCUIT DIAGRAM ..................................................................................................................... 3-596. RF SERVO CIRCUIT DIAGRAM .......................................................................................................... 3-617. ADC CIRCUIT DIAGRAM ..................................................................................................................... 3-638. BEAT BOX CIRCUIT DIAGRAM .......................................................................................................... 3-659. VFD CIRCUIT DIAGRAM ..................................................................................................................... 3-67
10. VOLUME CIRCUIT DIAGRAM ............................................................................................................. 3-6911. USB CIRCUIT DIAGRAM ..................................................................................................................... 3-7112. IPOD CIRCUIT DIAGRAM .................................................................................................................... 3-7313. MIC CIRCUIT DIAGRAM (OPTIONAL PART) ..................................................................................... 3-75
CIRCUIT VOLTAGE CHART ................................................................................................................. 3-77
PRINTED CIRCUIT BOARD DIAGRAMS ......................................................................................... 3-811. MAIN P.C.BOARD ................................................................................................................................ 3-812. SMPS P.C.BOARD ............................................................................................................................... 3-853. VFD P.C.BOARD .................................................................................................................................. 3-874. VOLUME P.C.BOARD .......................................................................................................................... 3-895. USB P.C.BOARD .................................................................................................................................. 3-916. IPOD P.C.BOARD ................................................................................................................................ 3-917. MIC P.C.BOARD (OPTIONAL PART) .................................................................................................. 3-91
3-1
3-2
Are the speaker cables connected correctly between the speaker terminals on the unit
and the speakers?
Make sure to connect the cables to each specified connector tightly on the unit.
Connect the woofer cables to the WOOF SYSTEM connectors on the rear panel.
YES
NO
Does the customer select correctly the input function he or she wants to listen to?
Make sure to connect some cables like A/V cables and FM/AM antenna cables.
YES
NO
After pressing FUNCTION, is CD, USB, AUX, IPOD, AM or FM displayed?
Make sure to select the desired input function pressing FUCTION button.
YES
NO
Turn the master volume clockwise for the volume up.
The volume level LEDs around the master volume will be turned on more and more
while turning it clockwise for the volume up.
YES
NO
Is there any sound from the selected input source? (AUX IN, USB, TUNER or CD Disc)
Refer to a devices instruction manual and then check if there is sound output from it
connecting another audio system.
YES
NO
Are the sound spectrum level LEDson the left and right side of the front panel
being changed up and down according to the sound input gain?
The sound spectrum level LEDs will be turned on/off repeatedly at regular intervals. The speakers cables
might be short-circuited with the chassis ground. Be careful not to be shorted each other.
YES
NO
The sound is output from the speakers.
YES
Sound OK
1. NO SOUND FROM SPEAKERS
TRAINING MASTER
3-3
Does the customer select correctly the AUX function he or her wants to listen to?
Make sure to connect some cables between the AUX IN jacks of the unit
and the Audio output jacks of a external Audio device.
YES
NO
After pressing the FUNCTION, is AUX displayed on VFD?
Make sure to select the AUX IN function pressing the AUX/IPOD/PORT. IN button.
YES
NO
Turn the master volume clockwise for the volume up.
The volume level LEDs around the master volume will be turned on more and more
while turning it clockwise for the volume up.
YES
NO
Is there any sound from the selected input source?
Refer to a devices instruction manual and then check if there is sound output from it connecting another audio system
YES
NO
Are the sound spectrum level LEDson the left and right side of the front panel
being changed up and down according to the sound input gain?
The sound spectrum level LEDs will be turned on/off repeatedly at regular intervals. A speaker cable might be short-circuited with the chassis ground.
Be careful not to be shorted each other.
YES
NO
Are the speaker cables connected correctly between the speaker terminals on the unit
and the speakers?
Make sure to connect the cables to each specified connector tightly on the unit.
YES
NO
The sound is output from the speakers.
YES
Sound OK
2. NO SOUND IN AUX FUNCTION
TRAINING MASTER
3-4
Does the customer select correctly the PORT. IN function he or her wants to listen to?
Make sure to connect a cable between the PORT. IN jack of the unit and the Audio
output jack of a portable device like a MP3 player.
YES
NO
Is PORT. IN displayed on VFD?Make sure to select the PORT. IN function pressing the AUX/IPOD/PORT. IN button.
YES
NO
Turn the master volume clockwise for the volume up.
The volume level LEDs around the master volume will be turned on more and more
while turning it clockwise for the volume up.
YES
NO
Is there any sound from the selected input source?
Refer to a portable devices instruction manual and then check if there is sound output
from it connecting another audio system.
YES
NO
Are the sound spectrum level LEDson the left and right side of the front panel
being changed up and down according to the sound input gain?
The sound spectrum level LEDs will be turned on/off repeatedly at regular intervals. A speaker cable might be short-circuited with the chassis ground.
Be careful not to be shorted each other.
YES
NO
Are the speaker cables connected correctly between the speaker terminals on the unit
and the speakers?
Make sure to connect the cables to each specified connector tightly on the unit.
YES
NO
The sound is output from the speakers.
YES
Sound OK
3. NO SOUND IN PORT. IN FUNCTION
TRAINING MASTER
3-5
Does the customer select correctly the iPod function he or she wants to listen to?
Make sure to put a iPod or a iPhone on the docking system on the top of the unit.
YES
NO
Does the customer use the compatible iPod?
Make sure that The unit supports the models as follows/iPod nano 1 G, 2 G, 3 G, 4 G, 5 G, 6 G/
iPod classic/ iPod 4 G, 5 G/iPod touch 2 G, 3 G, 4 G/ iPhone 3 G, 4 G/.
YES
NO
After displaying Loading, is IPOD displayed on VFD?
If ERRORmessage is displayed, make sure firmly to put a iPod or a iPhone on the docking system on the top of the unit. When the battery of a iPod or a iPhone is fully discharged, the unit can not detect IPOD function, Please wait for a moment
and then it will work after charging a little.
YES
NO
After selecting desired songs using the user interface of a iPod or a iPhone, press PALY button and turn the master volume
clockwise for the volume up.
The volume level LEDs around the master volume will be turned on more and more
while turning it clockwise for the volume up.
YES
NO
Is there any sound from iPod or iPhone?Refer to a devices instruction manual
and then check if there is sound output from it connecting another audio system.
YES
NO
Are the sound spectrum level LEDs on the left and right side of the front panel
being changed up and down according to the sound input gain?
The sound spectrum level LEDs will be turned on/off repeatedly at regular intervals. A speaker cable might
be short-circuited with the chassis ground. Be careful not to be shorted each other.
YES
NO
Are the speaker cables connected correctly between the speaker terminals on the unit
and the speakers?
Make sure to connect the cables to each specified connector tightly on the unit.
YES
NO
The sound is output from the speakers. Sound OKYES
4. NO SOUND IN IPOD FUNCTION
TRAINING MASTER
3-6
Does the customer select correctly the AM/FM function he or she wants to listen to?
Make sure to connect AM/FM antennas on the rear panel of the unit.
YES
NO
Is AM or FM displayed on VFD?Make sure to select AM or FM function
pressing the FUNC button.
YES
NO
After tuning a desired channel using the TUNING button,
is the sound quality good to listen to the music?
To prevent noise pickup, keep the AM Loopantenna away from the unit and other components.Be sure to fully extend the FM wire antenna. After
connecting the FM wire antenna, keep it horizontal.
YES
NO
Is the signal strength of the radio station too week? Make sure to tune the station manually.
YES
NO
Are the sound spectrum level LEDson the left and right side of the front panel
being changed up and down according to the sound input gain?
The sound spectrum level LEDs will be turned on/off repeatedly at regular intervals. A speaker cable might
be short-circuited with the chassis ground. Be careful not to be shorted each other.
YES
NO
Are the speaker cables connected correctly between the speaker terminals on the unit
and the speakers?
Make sure to connect the cables to each specified connector tightly on the unit.
YES
NO
The sound is output from the speakers.
YES
Sound OK
5. NO SOUND IN AM/FM FUNCTION
TRAINING MASTER
3-7
Does the customer select correctly the CD function he or she wants to listen to?
Make sure to put on a CD disc on the tray.
YES
NO
Is a CD disc put on the tray correctly? Make sure to insert the CD disc upside down.
YES
NO
Does the unit display NO DISC on VFD when a disc is inserted on the tray?
Place the disc with the label or printed side facing upwards.
YES
NO
Does the customer use the supported mp3 or WMA music files on the disc?
Check the playable disc. Make sure that the file extensions
are .mp3 or .wma.
YES
NO
When the unit searches music files in a CD disc, are the following messages displayed on VFD?
SELECTED TRACKING # and TIME
Make sure to check the supported MP3/WMA music file on the CD disc.
Refer to the owners manual.
YES
NO
After selecting a track number using the SCAN or DISC# button, press PLAY button and turn the master
volume clockwise for the volume up.
The volume level LEDs around the master volume will be turned on more and more
while turning it clockwise for the volume up.
YES
NO
Is the sound quality good to listen to the music?
Make sure to clean CD discs with a commercially available cleaner. If the surface of the disc is polluted
or scratched, the sound quality can become bad or the customer can not listen to the music.
YES
YES
NO
Are the sound spectrum level LEDs on the left and right side of the front panel
changed up and down according to the sound input gain?
The sound spectrum level LEDs will be turned on/off repeatedly at regular intervals. A speaker cable might be short-circuited with the chassis ground.
Be careful not to be shorted each other.
NO
6. NO SOUND IN CD FUNCTION
TRAINING MASTER
3-8
YES
NO
NO
TRAINING MASTER
Are the speaker cables connected correctly between the speaker terminals on the unit
and the speakers?
Make sure to connect the cables to each specified connector tightly on the unit.
YES
NO
The sound is output from the speakers. Sound OKNO
YES
3-9
Does the customer select correctly the USB function he or she wants to listen to?
Make sure to insert a USB on the USB ports on the bottom of the unit.
YES
NO
Is USB displayed on VFD?Make sure to select the USB function
pressing the CD/USB button.
YES
NO
Does the unit display SELECTED on VFD when a USB is inserted into the USB port?
When No USB is displayed, make sure that the customer uses the recommended
USB which support USB2.0 or USB1.1.
YES
NO
Does the customer use the supported mp3 or WMA music files on the disc?
Check if it is the playable disc or not. Make sure that the file extensions are
.mp3or .wma.
YES
NO
When the unit searches music files in a USB, are the following messages displayed on VFD?
SELECTED TRACKING # and TIME
Make sure to check the compatible USB device and the supported MP3/WMA music file requirement.
Refer to the owners manual.
YES
NO
After selecting a track number using the SCAN button, press PLAY button and turn the master volume
clockwise for the volume up.
The volume level LEDs around the master volume will be turned on more and more
while turning it clockwise for the volume up.
YES
NO
Are the sound spectrum level on the left and right side of the front panel
being changed up and down according to the sound input gain?
The sound spectrum level will be turned on/off repeatedly at regular intervals. A speaker cable might be short-circuited with the chassis ground.
Be careful not to be shorted each other.
YES
YES
NO
Are the speaker cables connected correctly between the speaker terminals on the unit
and the speakers?
Make sure to connect the cables to each specified connector tightly on the unit.
NO
7. NO SOUND IN USB FUNCTION
TRAINING MASTER
3-10
The sound is output from the speakers. Sound OK
YES
NO
Is the power cord plugged into a electrical outlet?
Make sure to plug the power cord of the unit into a electrical outlet.
YES
NO
Does the Standby LED light in red color?
If the customer can not see the red light on the front panel, the SMPS might have any problem.
Please solve the problem referring to the service manual.
YES
NO
Is the Standby LED turned off after pressing the Power button
on the remote control?
Replace the batteries with new ones if the remote control doesnt work.
YES
NO
Are the messages displayed in the following order on VFD?
HELLOW VOLUME 15 FUNCTION
The SMPS might be not able to supply the power to drive the VFD.
Refer to the service manual to fix it.
YES
NO
Is there any sound from the speakers each input function?
Make sure to connect speaker cables.
YES
NO
Power & Sound OK
8. NO POWER
TRAINING MASTER
3-11
ONE POINT REPAIR GUIDE
1. NO POWERIf the unit doesnt work by no power problem, repair the set according to the following guide.
1-1. FUSE & BRIDGE DIODE1-1-1. SolutionPlease check and replace F901, BD901, TH901, TH903 on SMPS board.
1-1-2. How to troubleshoot (Countermeasure)1) Check if the fuse F901 is open or short-circuit.2) Check if the bridge diode DB901 is short-circuit by over current with a digital multi meter.3) Check if the NTC thermistor TH901 and TH902 is normal or open.
1-1-3. Service hint (Any picture / Remark)
< F901 > If F901 is not short-circuit,
replace it with a same specifi cations one.
< TH901, TH903 > If TH901 or TH902 is open,replace it with a new one.
< BD901 > If BD901 is short-circuit,
replace it with a new one.
3-12
ONE POINT REPAIR GUIDE
NO POWERIf the unit doesnt work by no power problem, repair the set according to the following guide.
1-2. D951, ZD9511-2-1. SolutionPlease check and replace D951, ZD951 on SMPS board.
1-2-2. How to troubleshoot (Countermeasure)1) Check the Anode-Cathod Voltage of D951 with a digital multi-meter, it is normally 0.2 ~ 0.3 V. If it doesnt have any voltage, its destroyed. Replace it with a new one.2) Check if ZD951 is short-circuit. If it is short-circuit, and then replace it with a new one.
1-2-3. Service hint (Any picture / Remark)
< SMPS schematic diagram >
3-13
ONE POINT REPAIR GUIDE
2. NO BOOTING WHEN POWER ON THE SETThe set doesnt work when press the power button on the front board or the remote control.
2-1. FLASH MEMORY2-1-1. SolutionPlease check and replace IC101 on MAIN board.
2-1-2. How to troubleshoot (Countermeasure)1) Check the 3.7VA to CN102, CN103, and CN104 in standby mode. If there is no 3.7 VA, check the SMPS.2) Check 5.6 V, 12 VA, FL+, FL- and 32 V when power on the set. - If the set doesnt work regardless of what the KEY1 changes high to low while pressing the power button. X100 and X101 work normally but, if you can not power on the set, replace the IC101 with a new one on the main board.
2-1-3. Service hint (Any picture / Remark)
w~yj{ysOyX[`P XWW
O`UZ_ZWtoP
XWXOZYU^ ]_roP
rlXOX[P
< Signal check point >
3-14
ONE POINT REPAIR GUIDE
3. VFD IS NOT DISPLAYED WHEN POWER ON THE SETWhen power on the set, any icons or characters on VFD are not displayed.
3-1. VFD3-1-1. SolutionPlease check and replace DIG301 on FRONT board.
3-1-2. How to troubleshoot (Countermeasure)1) Check if 32 V, FL+ and FL- are output from SMPS to VFD via the MAIN board.2) Check if the IC101 outputs VFD_RST, VFD_CLK, VFD_STB, and VFD_STB to the FRONT board.3) Check if the VFD grid current amplifier circuit (Q301, Q303, Q304) on the FRONT board. Check the drive signal to the transistors base. If the control signals from VFD (TP302, TP303, TP304) isnt output, replace VFD with a new one. If the transistor doesnt work, replace it.
3-1-3. Service hint (Any picture / Remark)
kpnZWXG} mk
{wZWYSG{wZWZSG{wZW[
xZWX xZW[xZWZ
yZY^O{wZW[PxZWXGl
GZW} T
jGGSGGGGGGUjGGGGU
< Waveform of the grid current driver >
3-15
ONE POINT REPAIR GUIDE
4. NO OPERATION OF MDWhen no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD dont work. This step is for checking the SPINDLE MOTOR among them.
4-1. SPinDLE MOTOR4-1-1. SolutionPlease check and replace IC407, IC408 on MAIN board.
4-1-2. How to troubleshoot (Countermeasure)1) Check the SPDO signal from Pin16 of IC407. If no signal, check 3.3V(RF) and X402.2) Check the SP- & SP+ from IC408 to CN405 for driving SPinDLE motor. It is about 3.6 Vp-p. If no signal, check +1.8 V and +5 V for IC408.3) Check if the FFC cable is solidly connected between CN405 and MD.4) Check the MD. If the sPindle motor is sort-circuit or has any trouble, it can not rotate CD discs. Please check the function after changing another MD.
4-1-3. Service hint (Any picture / Remark)
zwRGGju[W\
zwTGju[W\
GZU]} T zwR
YGGju[W\
zwTXGGju[W\
pj[W_
< Waveform of SP- & SP+ for driving SPinDLE motor >
< Signal check point >
3-16
ONE POINT REPAIR GUIDE
NO OPERATION OF MDWhen no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD dont work. This step is for checking the SLED MOTOR among them.
4-2. SLED MOTOR4-2-1. SolutionPlease check and replace IC407, IC408 on MAIN board.
4-2-2. How to troubleshoot (Countermeasure)1) Check the SLDO signal from Pin15 of IC407. If no signal, check 3.3V(RF) and X402.2) Check the SLED+ & SLED-from IC408 to CN405 for driving SPinDLE motor. It is about 2.9 Vp-p. If no signal, check +1.8V and +5V for IC408.3) Check if the FFC cable is solidly connected between CN405 and MD.4) Check the MD. If the sled motor is sort-circuit or has any trouble, it can not move the pickup module. Please check the function after changing another MD.
4-2-3. Service hint (Any picture / Remark)
zwRGGju[W\
zwT Gju[W\
zsRGGju[W\
zsTGju[W\
hGYU` } T
zsR[GGju[W\
zsTZGGju[W\
pj[W_
< Waveform of SLED- & SLED+ for driving SLED motor >
< Signal check point >
3-17
ONE POINT REPAIR GUIDE
NO OPERATION OF MDWhen no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD dont work. This step is for checking the TRAY MOTOR among them.
4-3. TRAY MOTOR4-3-1. SolutionPlease check and replace IC407, IC408 on MAIN board.
4-3-2. How to troubleshoot (Countermeasure)1) Check TUR+ & TUR-signals from Pin56 & 57 of IC501 to IC406. If no signal, check +5 V to IC406.2) Check TUR_M+ & TUR_M- from IC406 to CN405 for driving TRAY motor. It is about 3.8 Vp-p. If no signal, check +5 V to IC406. If it has any trouble, replace it with a new one.3) Check if the FFC cable is solidly connected between CN405 and MD.4) Check the MD. If the tray motor is sort-circuit or has any trouble, it can not rotate the tray. Please check the function after changing another MD.
4-3-3. Service hint (Any picture / Remark)
{|ytTGju[W\
{|ytRGGju[W\
hGZU_} T {|ytT
_GGju[W\
{|ytR^GGju[W\
pj[W_
< Waveform of TUR_Mfor driving TRAY motor >
< Signal check point >
3-18
ONE POINT REPAIR GUIDE
NO OPERATION OF MDWhen no sound output in the CD function, you can not listen to music reading data from a CD disc if the servo motors in MD dont work. This step is for checking the TRAY OPEN/CLOSE MOTOR among them.
4-4. TRAY OPEN / CLOSE MOTOR4-4-1. SolutionPlease check and replace IC407, IC408 on MAIN board.
4-4-2. How to troubleshoot (Countermeasure)1) Check MOT_OPEN & MOT_CLOSE signals from Pin104 & 105 of IC501 to IC408. If no signal, check +1.8 V & + 5 V to IC408.2) Check LOAD from IC406 to CN405 for driving the tray open / close motor. It is about 3.85 Vp-p. If no signal, check +5 V to IC406. If it has any trouble, replace it with a new one.3) Check if the FFC cable is solidly connected between CN405 and MD.4) Check the MD. If the tray motor is sort-circuit or has any trouble, it can not open or close the tray. Please check the function after changing another MD.
4-4-3. Service hint (Any picture / Remark)
hGZU_\} T
tv{jsvzltv{vwlu
svRGGju[W[svTGju[W[
svRXZGGju[W\
pj[W_
svTXYGGju[W\
tv{vwlu
^GGpj[W_
tv{jsvzl
]GGpj[W_
ju[W\
< Waveform for driving TRAY open / close motor >
< Signal check point >
3-19
ONE POINT REPAIR GUIDE
NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the pickup module in MD doesnt work. This step is for checking the LASER TRACKING ACTUATOR.
4-5. LASER TRACKING ACTUATOR4-5-1. SolutionPlease check and replace IC407, IC408 on MAIN board.
4-5-2. How to troubleshoot (Countermeasure)The tracking actuator makes the laser beam be positioned in the center of a track on CD disc.1) Check the TRD signal from Pin14 of IC407. If no signal, check 3.3 V(RF) and X402.2) Check T- & T+ from IC408 to CN404 for driving the tracking actuator. If no signal, check +1.8 V and +5 V for IC408.3) Check if the FFC cable is solidly connected between CN404 and MD.4) Check the MD. If the pickup module has any trouble, it can not move the laser beam on the left or right side. Please check the function after changing another MD.
4-5-3. Service hint (Any picture / Remark)
{RGGju[W[{TGju[W[
ju[W[
{RZGGju[W[
{TYGGju[W[
< Waveform of T for driving TRACKING actuator >
< Signal check point >
3-20
ONE POINT REPAIR GUIDE
NO OPERATION OF MD When no sound output in the CD function, you can not listen to music reading data from a CD disc if the pickup module in MD doesnt work. This step is for checking the LASER FOCUSING ACTUATOR.
4-6. LASER FOCUSING ACTUATOR4-6-1. SolutionPlease check and replace IC407, IC408 on MAIN board.
4-6-2. How to troubleshoot (Countermeasure)The focusing actuator makes the laser beam keep a regular interval with the surface of a CD disc.1) Check the FOD signal from Pin13 of IC407. If no signal, check 3.3 V(RF) and X402.2) Check F- & F+ from IC408 to CN404 for driving the focusing actuator. If no signal, check +1.8 V and +5 V for IC408.3) Check if the FFC cable is solidly connected between CN404 and MD.4) Check the MD. If the pickup module has any trouble, it can not move the laser beam on the top or bottom side. Please check the function after changing another MD.
4-6-3. Service hint (Any picture / Remark)
{T
mTGju[W[
mRGGju[W[
ju[W[
mR[GGju[W[
mTXGGju[W[
< Waveform of TR for driving FOCUSING actuator >
< Signal check point >
3-21
ONE POINT REPAIR GUIDE
5. NO SOUNDThere is no sound output in the CD FUNCTION, repair the set according to the follow-ing guide.
5-1. IN THE CD FUNCTION5-1-1. SolutionPlease check and replace IC501, IC602, IC801 on MAIN board.
5-1-2. How to troubleshoot (Countermeasure)1) Check CD_BCK, CD_LRCK, & CD_DATA signals from IC407 to IC501. If no signal, check if the RF & servo signals from MD is entered to IC407. Refer to the No operation of MD guide on Item 4.2) Check the following I2S signal flow. < I2S audio signal Interface > - DAC_BCK: IC501_87Pin --> IC507_16Pin --> IC602_4Pin - DAC_LRCK : IC501_88Pin --> IC507_5Pin --> IC602_4Pin (44.1 kHz) - DAC_DATA : IC501_83Pin --> R817 next to IC01 --> IC602_6/9Pin - DAC_MCLK : IC501_86Pin --> R818 next to IC801 If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one.3) Check if Digital audio AMP block on Item 5-2 is normal.
5-1-3. Service hint (Any picture / Remark)
khjtjsrGOX]U` ZtoPkhjijrGOXU[toPkhjkh{hkhjsyjrGO[[UXroP
{T
IC501MLC9800
IC602PS9850
PWM
IC801FS502B
BEAT BOX
AMP ICTAS5631
DAC_BCK
DAC_LRCK
IC407BU9543KV
BEAT_DATA DAC_MCLK
< Waveform of I2S audio interface signals >< I2S Signal Flow >
3-22
ONE POINT REPAIR GUIDE
NO SOUND There is no sound output by DIGITAL AUDIO AMP DAMAGE, repair the set according to the following guide.
5-2. BY DIGITAL AUDIO AMP DAMAGE (IN ALL FUNCTIONS)5-2-1. SolutionPlease check and replace IC701, IC702, IC703 on MAIN board.
5-2-2. How to troubleshoot (Countermeasure)1) Check FL, FR, RL, RR, SW1, & SW2 signals from IC602 to IC701, 702 & 703 each input function. If no signal, check if I2S audio signals are entered to IC602. Refer to I2S audio signal interface on Item 5-1.2) Check PVDD_48V. If 48 V is abnormal, check the SMPS.3) Check +12 for driving the gate of AMP IC. a. All the powers are normal, but if +12 V is low, there is possible for AMP IC to be damaged. b. Remove a ferrite bead among FB703, FB707 and FB713 one by one. When removed a ferrite bead, if +12 V is recovered, the IC connected to it was damaged. c. Replace the IC with a new one.4) Check the impedance between SPK+ & GND and SPK- & GND. a. If the impedance is 0 , the IC must be damaged. b. After removing the heat sink, replace it with a new one.Comments !!If a AMP IC among three is damaged, AMP_PDN to R103 changes HIGH to LOW at regular intervals.The sound is not output by AMP power down function.
5-2-3. Service hint (Any picture / Remark)
khjkh{h
yXWZOhtwwkuP
pjXWXpj^WX pj^WY pj^WZ
ilhk
< Signal check point >
3-23
ONE POINT REPAIR GUIDE
NO SOUND There is no sound output in the USB FUNCTION, repair the set according to the fol-lowing guide.
5-3. IN THE USB FUNCTION5-3-1. SolutionPlease check and replace IC501, IC504 on MAIN board & IC3U01 on USB board.
5-3-2. How to troubleshoot (Countermeasure)1) Check +5VU to USB board. If the USB LEDs are turned on, the voltage is okay, if so not, check +5.6 V to Pin8 of CN602.2) Check USB D from main board to USB board. a. Check USB_HUB_DN/DP signals to IC501(Pin116, 117) b. Check USB1/2_DN/DP signals from IC504 to CN602 (Pin10, 11, 13, & 14) If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to the IC is distorted or no signal, replace it with a new one.3) Check if Digital audio AMP block on item 5-2 is normal.
5-3-3. Service hint (Any picture / Remark)
kT GXWGGju]WY
kRGGGXXGGju]WY
USBBoard
{T
IC501MLC9800
IC602PS9850
PWM
IC801FS502B
BEAT BOX
AMP ICTAS5631
DAC_BCKDAC_LRCK
IC504USB2512B
DAC_DATA DAC_MCLK
ADC_DATADAC_MCLK
USB_D
BEAT_DATA
USB
< Waveform of USB D signal >< USB function signal fl ow >
3-24
ONE POINT REPAIR GUIDE
NO SOUND There is no sound output in the AUX FUNCTION, repair the set according to the fol-lowing guide.
5-4. IN THE AUX FUNCTION5-4-1. SolutionPlease check and replace IC202 on MAIN board.
5-4-2. How to troubleshoot (Countermeasure)1) Check AUX_L/R signals to IC202 (Pin7, 8).2) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202.3) Check if ADC_DATA is entered from IC202 to IC501. If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.4) Check the following I2S signal flow from IC501 to IC602. (Refer to Item 5-1.) If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one.5) Check if the digital audio AMP block is okay. Refer to Digital Audio AMP guide on Item 5-2. If AMP is damaged, replace it with a new one.
5-4-3. Service hint (Any picture / Remark)
kRGGGXXGGju]WY
h|sGGyYWYh|yGGyYWZ
hkjijrGGyYX]
hkjkh{hGGGyYX\
hkjsyjrGGyYX`
hkjtjsrGGyYYX
pjYWY
AUX{T
IC501MLC9800
IC602PS9850
PWM
IC801FS502B
BEAT BOX
AMP ICTAS5631
DAC_BCKDAC_LRCK
IC202CS5346
DAC_DATA DAC_MCLK
ADC_DATADAC_MCLK
AUX_L/R
BEAT_DATA
< Signal check point >< AUX function signal fl ow >
3-25
ONE POINT REPAIR GUIDE
NO SOUND There is no sound output in the IPOD FUNCTION, repair the set according to the fol-lowing guide.
5-5. IN THE IPOD FUNCTION5-5-1. SolutionPlease check and replace IC201, IC202, IC203 on MAIN board.
5-5-2. How to troubleshoot (Countermeasure)1) Check USB VBUS_+5V to Pin3 of CN201 after inserting the iPod to IPOD Docking System. If no power, check if IPOD_P_CTRL to Pin3 of IC203 change Low to High.2) Check if IPOD Audio L/R signals are entered from Pin11 & 12 of CN201 to Pin10 & 6 of IC201.3) Check if the IPOD Audio L/R that some noise is removed to IC201 are output from Pin1 & 5 of IC201. If no signal, replace the IC with a new one.4) Check IPOD_L/R signals from 1 & 5 of IC201 to IC202(Pin26, 27).5) Check if ADC_BCK, ADC_LRCK & DAC_MCLK are entered from IC501 to IC202.6) Check if ADC_DATA is entered from IC202 to IC501. If there is no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.7) Check the following I2S signal flow from IC501 to IC602. (Refer to Item 5-1.) If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to the IC is distorted or no signal, replace it with a new one.8) Check if the digital audio AMP block is okay. Refer to Digital Audio AMP guide on Item 5-2. If an AMP is damaged, replace it with a new one
5-5-3. Service hint (Any picture / Remark)
pwvksGGyYY]X hkjijrGGyY
hkjsyGyYX`
hkjtjsrGGyYYX
pjYWY
iPod{T
IC501MLC9800
IC602PS9850
PWM
IC801FS502B
BEAT BOX
AMP ICTAS5631
DAC_BCKDAC_LRCK
IC202CS5346
DAC_DATA DAC_MCLK
ADC_DATADAC_MCLK
IPOD_L/R
BEAT_DATA
< Signal check point >< iPod function signal fl ow >
3-26
ONE POINT REPAIR GUIDE
NO SOUND There is no sound output in the PORT. IN FUNCTION, repair the set according to the following guide.
5-6. IN THE PORT. IN FUNCTION5-6-1. SolutionPlease check and replace IC202 on MAIN board.
5-6-2. How to troubleshoot (Countermeasure)1) Check PT_L/R signal from Main board to USB board.2) Check if PT_LR is entered from Pin1 & 3 of CN3U01 to Pin1 & 3 to CN502.3) Check POT_L/R signals to IC202(Pin21, 22).4) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202.5) Check if ADC_DATA is entered from IC202 to IC501. If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.6) Check the following I2S signal flow from IC501 to IC602. (Refer to Item 5-1.) If there is any trouble, check the power for each IC. The power is normal but , if the signal waveform to the IC is distorted or no signal, replace it with a new one.7) Check if the digital audio AMP block is okay. Refer to Digital Audio AMP guide on Item 5-2. If AMP is damaged, replace it with a new one
5-6-3. Service hint (Any picture / Remark)
kRGGGXXGGju]WY
h|sGGyYWY
w{yGGYY
hkjijrGGyYX]
hkjkh{hGGGyYX\
hkjsyjrGGyYX`
hkjtjsrGGyYYX
pjYWY
w{sGGYX
{T
IC501MLC9800
IC602PS9850
PWM
IC801FS502B
BEAT BOX
AMP ICTAS5631
DAC_BCKDAC_LRCK
IC202CS5346
DAC_DATA DAC_MCLK
POT. IN
ADC_DATADAC_MCLK
USBBoard
POT_L/R
BEAT_DATA
< Signal check point >< PORT. IN function signal fl ow >
3-27
ONE POINT REPAIR GUIDE
NO SOUND There is no sound output in the TUNER FUNCTION, repair the set according to the following guide.
5-7. IN THE TUNER FUNCTION5-7-1. SolutionPlease check and replace IC202, TU101 on MAIN board.
5-7-2. How to troubleshoot (Countermeasure)1) Check if TUNER_LR is entered from Pin1 & 3 of T1U01 to IC202(Pin23, 24). If no signals, Check +3.3 V for Tuner power. Check if the Tuner control signals (CLK, DAT, CE, RST, GPO2) are entered from IC101 to TU101. If it doesnt work, replace TUNER with a new one.2) Check if ADC_BCK, ADC_LRCK, & DAC_MCLK are entered from IC501 to IC202.3) Check if ADC_DATA is entered from IC202 to IC501. If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.4) Check the following I2S audio signal flow from IC501 to IC602. (Refer to Item 5-1.) If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to the IC is distorted or no signal, replace it with a new one.5) Check if the digital audio AMP block is okay. Refer to Digital Audio AMP guide on Item 5-2. If AMP is damaged, replace it with a new one.
5-7-3. Service hint (Any picture / Remark)
kRGGGXXGGju]WY
h|sGGyYWY
{|ulyyGGY[
hkjijrGGyYX]
hkjkh{hGGGyYX\
hkjsyjrGGyYX`
hkjtjsrGGyYYX
pjYWY
{|ulysGGYZ
{T
IC501MLC9800
IC602PS9850
PWM
IC801FS502B
BEAT BOX
AMP ICTAS5631
DAC_BCKDAC_LRCK
IC202CS5346
DAC_DATA DAC_MCLK
TUNER
ADC_DATADAC_MCLK
TUNER_L/R
BEAT_DATA
< Signal check point >< TUNER function signal fl ow >
3-28
ONE POINT REPAIR GUIDE
NO SOUND There is no sound output in the MIC IN FUNCTION, repair the set according to the following guide.
5-8. IN THE MIC IN FUNCTION5-8-1. SolutionPlease check and replace IC603, IC605 on MAIN board.
5-8-2. How to troubleshoot (Countermeasure)1) Check MIC_SIG signal to Pin 27 of CN104. If no signal, Check the signal to Pin 3 of CN301 on the FRONT board. Check if the signal is entered from Pin3 of CN301 to MAIN board.2) Check if MIC_SIG is entered from Pin27 of CN104 to Pin3 to IC605 (MIC AMP).3) Check if the amplified signal is entered from Pin4 of IC605. If no signal output, check +12 V for IC605, replace IC605 with a new one if it has a problem.4) Check if MIC_BCK & MIC_LRCK is entered from IC507 to IC603 and DAC_MLCK from IC501 to IC603. Check if MIC_DATA is entered from Pin 9 of IC603I to Pin 7 of IC602. If no signal, check +5 V & +3.3 V for IC603. If it is abnormal, change replace it a new one.6) Check the following I2S signal flow from IC603 to IC602. If there is any trouble, check the power for each IC. If the signals are abnormal, replace it a new one.7) Check if the digital audio AMP block is okay. Refer to Digital Audio AMP guide on Item 5-2. If AMP is damaged, replace it with a new one.
5-8-3. Service hint (Any picture / Remark)
tpjzpnGGGXMYG
zkv|{XGy][\ tpjijrGGy][Z
tpjsyjrGGy][[
hkjtjsrGGy]_YIC501
MLC9800 IC602
PS9850PWM
IC801FS502B
BEAT BOX
AMP ICTAS5631
DAC_BCKDAC_LRCK
IC603AK5358
DAC_DATA DAC_MCLK
MIC IN
MIC_DATADAC_MCLK
MICBoard
MIG_SIG
BEAT_DATA
IC605S4308
< Signal check point >< MIC IN function signal fl ow >
3-29
ELECTRICAL TROUBLESHOOTING GUIDE
1. POWER SUPPLY ON SMPS BOARD
YES
YES
YES
YES
YES
No output 3.7 / 5.6 VA
Power line of MAIN PCB is short.
Replace F901 (same fuse).
Replace D904.
Replace BD901.
Replace IC934.
Replace D933, D937.
NO
NO
NO
NO
NO
F901 normal?
D904 normal?
BD901 normal?
IC934 normal?
D933, D937 normal?
3-30
ELECTRICAL TROUBLESHOOTING GUIDE
YES
YES
YES
YES
YES
No output 12 V
Power Line of Main PCB is short.
Replace F901 (same fuse).
Replace D904.
Replace BD901.
Replace D934, D935.
Replace IC931.
NO
NO
NO
NO
NO
F901 normal?
D904 normal?
BD901 normal?
D934, D935 normal?
IC931 normal?
3-31
ELECTRICAL TROUBLESHOOTING GUIDE
YES
YES
YES
YES
No output FL+/FL-
Check soldering of PN901.
Check 3.3 V Output & P-CTRL.
Replace ZD931.
Replace D931, D932.
Replace FR931.
NO
NO
NO
NO
P-CTRL OK?
ZD931 OK?
D931, D932 OK?
FR931 short?
3-32
ELECTRICAL TROUBLESHOOTING GUIDE
No AMP Output
Check soldering of CN902.
Check 3.3V & P-CTRL.
Replace ZD912, ZD913.
Replace D951, D952.
Replace D914/ Q900/ PC901.
Is theVCC supplied to
IC911 Pin7?
ZD912, ZD913 OK ?
D951, D952 OK ?
NO
NO
NO
NO
NO
P-CTRL OK?
Q901,D904 OK?
YES
YES
YES
YES
YES
3-33
ELECTRICAL TROUBLESHOOTING GUIDE
Power on.
FRONT board OK.
Check FFC cable (Pin29).
Check SMPS board.
Check FFC cable.
Check MAIN board.
Check SMPS board.
Check MAIN board.
Replace DIG301.Q301, 303, 304grid voltage OK?
Replace LED (LD302 ~ LD322).
Check MAIN board.
HELODisplay on FLD
OK?
Volume LED(LD302~LD322)
Turn on?
When turn the volume, count is
change?
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
CN301cable connection
OK?
CN301 Pin18+12 V OK?
CN301 Pin13, 14signal OK?
CN301 Pin20, 21, 22 data signal
OK?
CN301 Pin27, 28, 29 power
OK?
CN301 Pin7, 9, 12I2C data OK?
2. SYSTEM PART
YES
YES
YES
YES
YES
YES
YES
YES
YES
3-34
ELECTRICAL TROUBLESHOOTING GUIDE
CD FUNCTION
Check FFC cableto CN404, CN405.
Is motor_open/ close OK?(IC408 Pin9,10)
Check IC408.
PD(CN404 Pin5)about 180 mV?
Check IC301.
Check Loading motor.
Check IC501.
OPU driving (Focusing & Tracking) OK?
Check OPU.(Pick-up module)
Is motor impedanceabout 12 ?
IC407 Pin34,35,36 I2S output
signal OK?
Can disc insert?
IC501 Pin100,101,102 I2S input
signal OK?
Disc reading OK?
IC501 Pin100,101,102 I2S input
signal OK?
NO
NO
NO
NO
NO
NO
NO
NO
NO
IC407RF & Servo signal
OK?
Focusing/ Tracking/ Sled Signal
OK?
LOAD +- ok ?
YES
YES
YES
YES
YES
YES
NO
YES YES
YES
A
3. NO AUDIO PART
3-35
ELECTRICAL TROUBLESHOOTING GUIDE
USB play
Check IC501.
Replace IC3U01.
IC501 Pin116,117 USB_D output
signal OK?
NO
NOIC3U01USB power +5 V
OK?
YES
A
A
When insert USB,IC502 Pin1,2,3,4 USB_D
signal OK?
NO
YES
YES
YES
YES
YES
AUX
Check audio cable.
Replace IC202.
Check IC501.
NO
NO
NO
IC202 Pin7,8 AUX input signal
OK?
IC202 Pin41 ADC data output signal
OK?
IC202 Pin42,43,44 I2S input signal
OK?
3-36
ELECTRICAL TROUBLESHOOTING GUIDE
iPod
Check IC501.
Replace IC202.
Check USB_VBUS of IC203.
IC202 Pin42,43,44 I2S input signal
OK?
IC202 Pin41 ADC data output
signal OK?
NO
NO
NOIC203 Pin4 USB_VBUS 5 V
OK?
YES
A
A
IC202 Pin25,26 iPod input signal
OK?
NO
YES
YES
YES
YES
YES
YES
POT. IN
Check USB board.
Replace IC202.
Check IC501.
NO
NO
NO
IC202 Pin21,22 POT. IN input signal
OK?
IC202 Pin41 ADC data output signal
OK?
IC202 Pin42,43,44 I2S input signal
OK?
3-37
ELECTRICAL TROUBLESHOOTING GUIDE
TUNER
Check IC501.
Replace IC202.
Check +3.3 V of TU101.
IC202 Pin42,43,44 I2S input
signal OK?
IC202 Pin41 ADC data output
signal OK?
NO
NO
NOTU101 TUNER_L/R output
signal OK?
YES
A
IC202 Pin21,22 TUNER_L/R input
signal OK?
NO
YES
YES
YES
3-38
ELECTRICAL TROUBLESHOOTING GUIDE
B
A
YES
YES
YES
YES
YES
YES
YES
Replace IC501.
Replace IC507.
Check IC507.
Check IC501.
Check IC501.
Check IC501.
Check IC801.
NO
NO
NO
NO
NO
NO
NO
IC501 Pin83,87,88 I2S data output
signal OK?
IC507 Pin7,14 BEAT_LRCK/BCK output
signal OK?
IC507 Pin2,17 DAC_BCK/LRCK input
signal OK?
IC501 Pin83 BEAT_DAC_DATA output
signal OK?
IC801I2S input signal
OK?
IC501 Pin83 BEAT_DAC_DATA output
signal OK?
IC801BEAT_DATA output signal
OK?
3-39
ELECTRICAL TROUBLESHOOTING GUIDE
4. DIGITAL AUDIO AMP CHECK
B
Check SMPS.
Check speaker cable connection.
Replace IC602.
Check IC801 & IC501.
Check L701, L702, L704, L705. Check L708, L709, L710. Check L711, L714, L715, L717.
Check IC602.
Replace IC701. Replace IC702. Replace IC703.
Check IC602.
+12 VA, +48 VPower voltage OK?
IC602PWM data output signal
OK?
IC602I2S input signal
OK?
IC701FL/FR input signal
OK?
IC701SPK_FL/FR output
OK?
IC703RL/RR input signal
OK?
IC703SPK_RL/RR output
OK?
IC702SW1/SW2 input signal
OK?
IC702SPK_SW output
OK?
NO
NO NONO
NO
NO
NO NO
YES
YES
YES
YES YES YES
YES
YES YES YES
YESYES
OK
3-40
WAVEFORMS
1. WAVEFORM OF SP- & SP+ FOR DRIVING SPINDLE MOTOR
3. WAVEFORM OF TUR_M+ & TUR_M- FOR DRIVING TRAY MOTOR
4. WAVEFORM OF LO- & LO+ FOR DRIV-ING PICKUP MODULE UP/DOWN MOTOR
2. WAVEFORM OF SL- / SL+ FOR DRIVING SLED MOTOR
zwR
zwT
{|ytT
{|ytR
ZUY}
tv{jsvzl
tv{vwlu
svR
svT
zsR
zsT
3-41
5. WAVEFORM OF RF SERVO
7. WAVEFORM OF BEAT BOX IC'S POWER SEQUENCE
8. WAVEFORM OF VFD GRID CUR-RENT DRIVER
6. WAVEFORM OF I2S SIGNAL TO BEAT BOX IC (IC801)
w~yj{ys
ZUZ}Oilh{P
ilh{w~y
joXayZY^O{wZW[PjoYaxZWXGl
khjtjsr
ilh{ijr
ilh{kh{h
ilh{syjr
3-42
9. WAVEFORM OF USB_D
kT
kR
3-43 3-44
670'4+0
.+0'176
#WFKQ
%0
/#+02%$
(. (4 4459 594.
%0
%0
%0
%0
%0
%0
+21&+2*
10'
/&/'%*#
%07
%08
%0
(41062%$ 5/252%$
%0
/&2+%-72
%0
/&59
+6%*
%0
%0
75$2%$
10P15P
25P
16P
18P
14P
15P 29P
WIRING DIAGRAM
3-45 3-46
BLOCK DIAGRAMS1. OVERALL BLOCK DIAGRAM
IC407BU9543KV
RF+ SERVO DSP
IC408S3053Motor Drive
A,B,C,D,E,F
PD
LD
USB_Ds
IC200CS5346
DAC_BCK/LRCK
ppwvkk
SPINsSLEDs
TUR IC501
MLC9800 MCS LOGIC
DAC_MCLK
M SPDO/SLDO/FOD/TRD
mV{y
TUR_Ms
LOADs
IC406S8082
OPEN/CLOSE/LIMIT/UPDN/D_SENSE
MOT_MUTE/CLOSE/OPEN
ADC_DATAIC502 SDRAM
IC503 FLASH
M00_15/A00_16
DRM_WEN/CAS/RAS/SEL/CLK/CKE
SF_DI/DO
SF_CS/SCK
IC251NJM2794ADC_EDID_PWM_DATA/CLK
IPOAUDIO L/R
IPOD_PCTRL/RX/TX/DET/READAY
POT_L/R
P/UP
TU101TUNER
VFDDIG301
MICOM_CS/DO/DI/CLK/MAIN_RESET
AUX_L/R
IC101MICOM
LC87F085
TUNER_SCLK/SDIO/RST/GPIO2/SEN
VFD_STB/CLK/DO/RST
IC100EEPROM
CLK/DATA
IC602PS9850
PWM
REMOCON/KEY/
IC501S4308
MIC IC603AK5358
MIC_SIG SDOUT1
FL
FR
F/L
AMP_PDNAMP_OTW/SD/CLIP/READY
F/R
SPEANA
DRV603AUDIOOUT
AUDIO OUT_L/R
AUX
IC701AMP IC
TAS5631
USB1
POT. IN
CD
_DIN
_DO
UT
CD
_R/W
BUSY
; CD
_16M
SU
BS
YQ;
CD
_RST
CD_M
CK/B
CK/L
RCK/
DAT
A
TUNER_L/R
IC504CP forIPODCP_RESET/SCL/SDA
IPO L/R
IC801FS503B
BEAT BOXLBT_RX/TX/RST
USB_RESET/SCL/SDA
USB HUBUSB2512B
USB2
R/L
R/R
IC702AMP IC
TAS5631
SW1
SW2
IC702AMP IC
TAS5631
LBT_DATA 300Wx2
150Wx2
300Wx2
RL
RR
SW1
SW2
LBT_BCK /LBT_LRCK
kljrGGtljohupzt
USB2USB1
LBT_
DA
TA
LBT_
CLK
iPod
3-47 3-48
2. SMPS BLOCK DIAGRAM
DigitalPowerAMP
FL
FR
SW
C
SL
SR
TRANS
MAIN&
AMP
FilterSection
(Varistor, Resistor,Line Filter
Thermistor)
Rectifier Circuit(Bridge,
CAPACITOR)
AMP Power &
UC3844 for Main Power
FET
[U\}
ZY
XY}
\U]}
ZU^}h
[_}
AC
Snubber
msORVTP
}rr
STR-A6252 forMain Power
MAINTRANS
pwvkGVG|ziGVGtwlnVGkjkj
vwhtwVmhu
}mk
}mk
|Tj
wTj{ys
3-49 3-50
+12V
SMPS
+3.7VA
+5.6V
SPEANAQ601
IC605MIC AMP
S4308 FANQ701
IC102RESETKIA7027
D102D104
IC101U_COM
IC601LDO
TJ3965D
TU101TUNERYST996
IC103PWR SENS
IC100EEPROM24CS16
IC602PWM
PS9850
IC603ADC(MIC)AK5358A
IC201IPOD AMPNJM2794
IC501MCS
MLC9800
IC502SDRAM
EM638165
IC503FLASH
MX25L8005
IC506CP2.0B
Q405
IC407RF
BU9543KV
Q406
+1.8V
+3.3V
VCC12 IC509KIA1112F
IC504USB HUBUSB2512A
IC701/702/703POW AMPTAS5631
FRONT LED9EA x 2
VOLUME LED9EA
DIG301VFD
RMC301REMOCON
IC50774AHC244
IC401TJ3965D
IC801BEAT BOXFS-503B
IC802TJ3965D
VCC12A
IC803BOOT
FLASH 16MB
IC805BEAT SOURCEFLASH 32MB
WOOFEREXTENDERx2
12VA
IC505 278P33
IC203 IPOD PWRLM39102D
IC3U01USB PWRLM39102D
IC408MOTORAM3053S
IC406MOTORS8082
ADCIC202
CS5346
VCC33
+5V IC604DRV603
+3.3V(ADC)
+3.3V(CD)
+3.3V(RF)
+3.3V(USB)
+3.3V(BEAT)
IC80674AHC244
IC80774AHC244
D301
IC5058TJ3965D
+48VIC701/702/703AUDIO AMP
TAS5631
+3.3V(CD)
FL DIG301
D101
D302
3. POWER BLOCK DIAGRAM
3-51 3-52
CIRCUIT DIAGRAMS1. SMPS CIRCUIT DIAGRAM
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BEMODIFIED OR ALTERED WITHOUT PERMISSIONFROM THE LG CORPORATION. ALL COMPONENTSSHOULD BE REPLACED ONLY WITH TYPES IDENTICAL TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL
COMPONENTS ARE SHADED ON THE SCHEMATICFOR EASY IDENTIFICATION.THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER FROM THE ACTUAL CIRCUIT USED. THIS WAY,IMPLEMENTATION OF THE LATEST SAFETY ANDPERFORMANCE IMPROVEMENT CHANGES INTOTHE SET IS NOT DELAYED UNTIL THE NEW SERVICELITERATURE IS PRINTED.
NOTE :1. Shaded( ) parts are critical for safety.
Replace only with specified part number.2. Voltages are DC-measured with a digital voltmeter
during Play mode.
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
CAUTION: Danger if fuse is incorrectly replaced.
Replace only with the type identical to fuse rating and(or) model name described in main label.
WarningParts that are shaded are critical withrespect to risk of fire or electrical shock.
SMPSEBY32630703 Rev 3.1
2010.11.09
3-53 3-54
2. MICOM CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
-COMEBY60990001(#1) Rev 7.4
2011.05.12
3-55 3-56
3. PWM CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
PWMEBY60990001(#2) Rev 7.4
2011.05.12
3-57 3-58
4. AMP CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
AMPEBY60990001(#3) Rev 7.4
2011.05.12
3-59 3-60
5. DSP CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
DSPEBY60990001(#4) Rev 7.4
2011.05.12
3-61 3-62
6. RF SERVO CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
RF SERVOEBY60990001(#5) Rev 7.4
2011.05.12
3-63 3-64
7. ADC CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
ADCEBY60990001(#6) Rev 7.4
2011.05.12
3-65 3-66
8. BEAT BOX CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
BEAT BOXEBY60990001(#7) Rev 7.4
2011.05.12
3-67 3-68
9. VFD CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
VFDEBY61172601 Rev 2.1
2011.01.25
3-69 3-70
10. VOLUME CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
VOLUMEEBY61172701 Rev 2.1
2011.01.25
3-71 3-72
11. USB CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
USBEBY61172801 Rev 2.3
2011.01.25
3-73 3-74
12. IPOD CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
IPODEBY60990101 Rev 3.2
2010.11.09
3-75 3-76
13. MIC CIRCUIT DIAGRAM (OPTIONAL PART)
A
1
2
3
4
5
6
7
8
9
10
11
12
B C D E F G H I J K L M N O P Q R S T
MICEBY60990701 Rev 3.2
2010.11.09
CIRCUIT VOLTAGE CHART1. HOW TO CHECK THE VOLTAGE
2. MAJOR ICs
3-77 3-78
No.Location /
DescriptionSupply Voltage
Pin No.Source Spec / Rating Measured voltage
1IC501
MLC9800
13,47,94-VDD12 1.2V 1.08~1.32V 1.18V
30,51,84,113-IO-VDD33
3.3V 3.0~3.6V 3.26V
120-PLL1VDD12 1.2V 1.08~1.32V 1.18V
124-PLL2VDD12 1.2V 1.08~1.32V 1.18V
122-PLL3VDD12 1.2V 1.08~1.32V 1.18V
115-USBVDD33 3.3V 3.0~3.6V 3.26V
14,48,95-VSS12 3.3V 3.0~3.6V 3.26V
3,52,85,109,114-IO-VSS33
1.2V 1.08~1.32V 1.18V
119-PLL1VSS12 3.3V 3.0~3.6V 3.26V
123-PLL2VSS12 1.2V 1.08~1.32V 1.18V
121-PLL3VSS12 1.2V 1.08~1.32V 1.18V
3-AVSS33 3.3V 3.0~3.6V 3.26V
118- USBVSS33 3.3V 3.0~3.6V 3.26V
2IC101
LC87F085NC8AVDD1,VDD2,VDD3,VDD4
3.3V 2.8~5.5V 3.37V
3IC100
S-24CS16VCC 3.3V 2.7~5.5V 3.37V
4IC602
PS9850
VDD_IO 3.3V 2.97~3.63V 3.31V
VDD_CORE 1.2V 1.08~1.32V 1.25V
VDD_VIN1 3.3V 2.20~3.30V 3.30V
VDD_VIN2 3.3V 2.20~3.30V 3.30V
VDD_A 1.2V 1.08~1.32 1.25V
5IC603
AK5358
VA 5V 6.0V MAX 5.11V
VD 3.3V 4.6V MAX 3.31V
6IC605S4308
VCC 12V 4.5~12V 11.25V
7IC604
DRV603VDD 5V 3~5.5V 5.1V
No.Location /
DescriptionSupply Voltage
Pin No.Source Spec / Rating Measured voltage
8IC701
TAS5631
PVDD_X 48V 25~52.5V 47.7V
GVDD_X 12V 10.8~13.2V 11.91V
VDD 12V 10.8~13.2V 11.91V
9IC502
EM638165TS-6GVDD,VDDQ 3.3V 3.0~3.6V 3.27V
10IC503
M25L1605D2I-12GVDD 3.3V 4.6V MAX 3.27V
11IC507
TC74VHC244FTVCC 3.3V 2.0~5.5V 3.27V
12IC506
CP ChipVCC 3.3V 7.0V MAX 3.27V
13IC504
USB2512AVDD33 3.3V 3.0~3.6V 3.26V
14IC505
278R33VOUT 3.3V - 3.28V
15IC407
BU9543KV
VDD 3.3V 2.7~3.6V 3.27V
VCORE 1.5V 1.4~1.65V 1.58V
16IC408S3053
VCC1, VCC2 5V 4.3~13.2V 5.10V
17IC406S8082
SVCC, PVCC 5V 4.3~13.2V 5.10V
18IC202
CS5346
VA 5V 4.75~5.25V 5.11V
VD 3.3V 3.13~3.47V 3.27V
VLS 3.3V 3.13~3.47V 3.27V
VLC 3.3V 3.13~3.47V 3.27V
19IC203
LM39102DVOUT 5V - 5.12V
20IC201
NJM2794RB2VCC 12V 4.3~13V 11.93V
21IC204
LM39102DVOUT 5V - 5.13V
22IC801
FS-503B
VDDK 1.2V 1.4V MAX 1.19V
VDDE 3.3V 4.0V MAX 3.27V
23IC803
M25L1605D2I-12GVDD 3.3V 4.6V MAX 3.27V
24IC806
TC74VHC244FTVCC 3.3V 2.0~5.5V 3.27V
25IC807
M25L1605D2I-12GVDD 3.3V 4.6V MAX 3.27V
26IC807
TC74VHC244FTVCC 5V 2.0~5.5V 5.12V
27IC807
KIA1112FVOUT 1.2V - 1.19V
28IC301
BU2090VDD 3.3V 7.0V MAX 3.66V
29IC302
BU2090VDD 3.3V 7.0V MAX 3.66V
30IC3U01
LM3912DVOUT 5V - 5.11V
Turn the SMPS board over with cable connected and check the voltage.
3. CAPACITORS ON MAIN BOARD 4. CAPACITORS ON SMPS BOARD
3-79 3-80
No. Location Value Capacitor (uF) Voltage Spec. Measured voltage
01 C111 47uF 16V 3.37V
02 C145 2.2uF 16V 3.37V
03 C124 1000uF 6.3V 3.38V
04 C109 1000uF 6.3V 3.38V
05 C808 47uF 16V 1.19V
06 C529 100uF 16V 3.30V
07 C530 470uF 16V 5.66V
08 C531 470uF 16V 5.65V
09 C533 470uF 16V 3.28V
10 C706 10uF 16V 11.92V
11 C746 10u 16V 11.92V
12 C786 10uF 16V 11.92V
13 C713 470uF 100V 47.7V
14 C734 470uF 100V 47.7V
15 C753 470uF 100V 47.7V
16 C774 470uF 100V 47.7V
17 C793 470uF 100V 47.7V
18 C784 470uF 100V 47.7V
19 C527 47uF 16V 1.19V
20 C550 47uF 16V 1.19V
21 C570 10uF 16V 3.27V
22 C525 47uF 16V 3.27V
23 C482 100uF 16V 1.65V
24 C462 47uF 16V 3.27V
25 C467 3.3uF 50V 1.65V
26 C492 47uF 16V 3.27V
27 C405 470u 16V 1.57V
28 C4H6 100uF 6.3V 1.57V
29 C406 100uF 6.3V 3.27V
30 C485 220uF 16V 5.11V
31 C221 100uF 16V 3.28V
32 C235 10uF 16V 5.7V
33 C231 47uF 16V 5.1V
34 C221 100uF 16V 5.1V
35 C210 10uF 16V 2.55V
36 C660 47uF 16V 3.31V
37 C657 47uF 16V 5.12V
38 C655 10uF 16V 2.56V
39 C681 1uF 50V .3V
40 C679 100uF 16V 11.25V
41 C676 22uF 16V 1.96V
42 C122 100uF 16V 3.31V
43 C620 100uF 6.3V 1.25V
44 C621 1000uF 6.3V 3.30V
45 C682 1000uF 6.3V 3.30V
46 C601 100uF 16V 3.31V
47 C3U25 100uF 16V 5.1V
No. LocationValue Capacitor
(uF)Voltage Spec.
100V-10% 240V/50Hz+10%
Measured voltage Measured voltage
01 C903 1000uF 315V 122.3V 190V
02 C904 1000uF 315V 123.9V 180.7V
03 C905 47uF 450V 245.9V 370.1V
04 C912 47uF 50V 18.47V 18.59V
05 C914 47uF 50V 12.68V 13.8V
06 C908 47uF 50V 15.34V 15.33V
07 C931 330uF 16V 4.81V 4.8V
08 C932 100uF 50V 31.96V 31.98V
09 C933 1000uF 16V 5.75V 5.75V
10 C935 1000uF 25V 12.63V 12.62V
11 C942 100uF 16V 11.99V 11.98V
12 C953 2200uF 80V 47.9V 48.1V
3-81 3-82
PRINTED CIRCUIT BOARD DIAGRAMS1. MAIN P.C.BOARD(TOP VIEW)
3-83 3-84
MAIN P.C.BOARD(BOTTOM VIEW)
3-85 3-86
2. SMPS P.C.BOARD
Rev 4.1
NOTE) Warning Parts that are critical with respect to risk of fire or electrical shock.
3-87 3-88
EAX64004201 Rev 2.3
3. VFD P.C.BOARD(BOTTOM VIEW)
3-89 3-90
4. VOLUME P.C.BOARD
3-91 3-92
7. MIC P.C.BOARD (OPTIONAL PART)
6. IPOD P.C.BOARD(TOP VIEW) (BOTTOM VIEW)
5. USB P.C.BOARD(TOP VIEW) (BOTTOM VIEW)
MEMO MEMO
3-93 3-94
#EV##EV##EV##EV##EV##EV#