LG CM6520-AP Service Manual
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LG CM6520-AP Service Manual

LG CM6520-AP Service Manual

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LG Electronics Online
Factory
Factory
Factory
Model
Suffix
Model
CM6520-
ECHZ
DUSALLK ENAI
AP
Buyer Name Buyer Code Buyer Name Buyer Code Buyer Name Buyer Code
Buyer
LGEUS
US000001
EFFECTIVE
2013-06-18
DATE
Subject
Volume encoder changed
No.
Loc No.
Part No
1
VR3V02
6110E00019E
2
VR3V02
EBF61474401
3
VR3V02
Reason Of Change
Volume Encoder changed for sensitivity improvement.
- Location : VR3V02
- Before Changed : 6110E00019E or EBF61474401
- After Changed : EBF61915401
4M_C20130450.pdf
** FILE THIS SERVICE BULLETIN WITH YOUR SERVICE MANUAL
Parts
Original
A
New
Original
B
New
Original
C
New
Original
D
New
file:///C:/Users/BiteMe/Downloads/Documents/LG%20Electronics%20Online.htm
SERVICE BULLETIN
Sales
Sales
Sales
Subsidiary
Model
Suffix
CM6520 DUSALLK CM6520
LGEAI
US000002
EFFECTIVE FROM(SERIAL NO.)
Before Change
DESC./SPEC.
Switch,Encoder /
EVEKD2F3024M ENCODER 5VDC 0.01A
VERTICAL 50GF.CM 24 D-TYPE 12mM Y
N - Panasonic Corporation.
Switch,Encoder /
EC12H-109 ENCODER 5VDC 0.01A
VERTICAL 50GF.CM . D-TYPE 12mM Y
N - YUQIU MACHINERY & ELECTRONIC
EBF61915401
/
NOTE(**) : INTERCHANGEABILITY CODE
Set
Early
Original or new parts may be used in early or late production sets.
Use original parts until exhausted, then stock new parts.
Late
Early
Original parts may be used in early production sets only.
New parts may be used in early or late production sets.
Use original parts where possible, then stock new parts.
Late
New parts only may be used in early or late production sets.
Early
Stock new parts.
Late
Original parts only may be used in early production sets.
Early
New parts may be used in late production sets only.
Stock original and new parts.
Late
No.
Date
Customer
Factory
Factory
Factory
Model
Model
Suffix
After Change
Part No
DESC./SPEC.
/
/
Switch,Encoder /
EC12H-109A ENCODER 5VDC 1MA
VERTICAL 400GF.CM . D-TYPE 30mM Y
N - DONGGUAN YUQIU ELECTRONIC
CO.,LTD
1. To improve performance
2. To improve productivity
3. To improve reliability
4. Change of material or dimension
5. Addition
6. Deletion
7. Correction
CHIEF ENGINEER ,
Factory.
Page 1 of 1
:
4M/C20130450
: 2013-06-19
Sales
Sales
Sales
Customer
Subsidiary
Model
Suffix
Model
~304xxxxx
Note
K-Code
Remark
C
6
C
6
C
5
KEY-WORD CODE
10/15/2014

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  • Page 1 LG Electronics Online Page 1 of 1 SERVICE BULLETIN 4M/C20130450 Date : 2013-06-19 Factory Factory Sales Sales Sales Customer Factory Factory Sales Sales Sales Customer Factory Factory Model Suffix Subsidiary Model Suffix Model Model Suffix Subsidiary Model Suffix Model Model...
  • Page 2 Internal Use Only Website http://biz.lgservice.com Mini Hi-Fi System SERVICE MANUAL MODEL: CM6520 (CM6520, CMS6520F/W) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. 5814415 JUNE...
  • Page 3 CONTENTS SECTION 1 ..GENERAL SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..REPLACEMENT PARTS LIST...

  • Page 4: Table Of Contents

    SECTION 1 SUMMARY CONTENTS SERVICING PRECAUTIONS ........................1-3 ESD PRECAUTIONS ..........................1-5 SERVICE INFORMATION FOR EEPROM ..................1-6 PROGRAM DOWNLOAD GUIDE ......................1-7 SPECIFICATIONS ............................1-9...

  • Page 5: Servicing Precautions

    SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK-UP 1. 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. Storage in conductive bag Drop impact 2.

  • Page 6: Notes Regarding Compact Disc Player Repairs

    NOTES REGARDING COMPACT DISC PLAYER REPAIRS 1. Preparations 1) 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.

  • Page 7: Esd Precautions

    ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD) Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity.

  • Page 8: Service Information For Eeprom

    SERVICE INFORMATION FOR EEPROM POWER ON FLD no disc status Remote control ‘ ’ + Front ‘STOP’ DETECT NEW EEPROM push same timing during 5s (OPTION EDIT SCREEN) NAME FLD ‘OP-0…. Move to appropriate position and make changes with remote control. /■...

  • Page 9: Program Download Guide

    PROGRAM DOWNLOAD GUIDE 1. AUDIO PROGRAM Download program file name must be RCT606_YYMMDDX.HEX If security program (Water Wall) is activated on your PC, you must save the file to the usb storage device 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 other function, nor power off the device.
  • Page 10 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 storage device 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 other function, nor power off the device.

  • Page 11: Specifications

    SPECIFICATIONS • GENERAL Power requirements Refer to main label Power consumption Refer to main label Dimensions (W x H x D) 285 x 350 x 380 mm without foot Net Weight (Approx.) 6.6 kg Operating temperature 5 °C to 35 °C (41 °F to 95 °F) Operating humidity 5 % to 90 % Bus Power Supply...
  • Page 12 MEMO 1-10...

  • Page 13: Cabinet & Main Chassis

    SECTION 2 CABINET & MAIN CHASSIS CONTENTS DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (CDM-H1803) ......2-2 1. ORDER OF DISASSEMBLY FOR MECHANISM DECK ................2-2 2. ORDER OF ASSEMBLY FOR MECHANISM DECK ................2-6 EXPLODED VIEWS ........................... 2-11 1. CABINET AND MAIN FRAME SECTION (CM6520) ................2-11 2.

  • Page 14: Disassembly And Assembly For Mechanism Deck (Cdm-H1803)

    DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (CDM-H1803) 1. ORDER OF DISASSEMBLY FOR MECHANISM DECK 1) Disassemble the Cover Guide Disc. Figure 1 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.

  • Page 15: Order Of Disassembly For Mechanism Deck

    ORDER OF DISASSEMBLY FOR MECHANISM DECK 4) Loosen the screw to pull up and disassemble the Tray Disc. Figure 4 5) Loosen the screw to pull up and disassemble the Gear Tray CAM. Figure 5 6) Disassemble the Gear Tray, Tray Motor Assy and Loading PCB Assy from the Tray Loading.
  • Page 16 ORDER OF DISASSEMBLY FOR MECHANISM DECK Figure 7 7) Disassemble the Harness Cable from the Base Main. Disassemble the Base Sled Assy from the Base Main by referring to Figure. Figure 9 9) Push the Guide UD in direction 1 to disassemble it from the Base Main.
  • Page 17 ORDER OF DISASSEMBLY FOR MECHANISM DECK 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...

  • Page 18: Order Of Assembly For Mechanism Deck

    2. ORDER OF ASSEMBLY FOR MECHANISM DECK 1) 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 2) Set the Guide UD on the Base Main.
  • Page 19 ORDER OF ASSEMBLY FOR MECHANISM DECK 3) Set the Gear Loading 1 and Gear Pulley 2 on the Base Main. Hang the belt between the Gear Pulley and Motor Pul- ley. Assemble the Clamp Disc, Clamp Magnet and Cover Plate to the Base Main. Figure 3 4) After setting the Gear Main 2, Gear Pu Up 3 and Gear Pu Down 4 on the Base Main, tighten the screws.
  • Page 20 ORDER OF ASSEMBLY FOR MECHANISM DECK Figure 5 Figure 6 5) After setting the Main PCB Assy on the Base Main, 6) Set the Base Sled Assy on the Base Main. tighten the screw. (When setting the part, assemble with the CAM part of (Set the part accurately on the hook) the Guide UD inserted in two locations of the Boss of Solder the Motor Jump Wire on the PCB set on the...
  • Page 21 ORDER OF ASSEMBLY FOR MECHANISM DECK Figure 7 Figure 8 7) After setting the Gear Tray, Tray Motor Assy and 8) Assemble the Gear Tray CAM on the Tray Loading Loading PCB Assy on the Tray Loading, tighten the and set the Tray Disc. screw.
  • Page 22 ORDER OF ASSEMBLY FOR MECHANISM DECK Figure 9 Figure 10 9) Assemble the Tray Loading Assy on the Base Main 10) After setting the Cover Guide Disc, tighten the Assy as shown in the Figure. screw. After assembling, insert the Loading FFC to the 5 Pin Wafer of Main PCB Assy.

  • Page 23: Exploded Views

    EXPLODED VIEWS 1. CABINET AND MAIN FRAME SECTION (CM6520) NOTES) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. CABLE6 CABLE1 CABLE7 iPod SMPS VOLUME CABLE2 USB+MIC 255A...

  • Page 24: Mechanism Deck Section (Cdm-H1803)

    MEMO 2. MECHANISM DECK SECTION (CDM-H1803) 153A 012B 012B 012A...

  • Page 25: Packing Accessory Section

    3. PACKING ACCESSORY SECTION 801 Owner’s Manual 808 Battery 824 AM Loop Antenna 825 FM Wire Antenna 900 Remote Control 803 Packing 804 Bag 802 Box...

  • Page 26: Speaker Section

    4. SPEAKER SECTION 4-1. FRONT SPEAKER (CMS6520F)
  • Page 27 4-2. PASSIVE SUBWOOFER (CMS6520W)
  • Page 28 MEMO 2-18...
  • Page 29 SECTION 3 ELECTRICAL CONTENTS TRAINING MASTER ........................... 3-2 1. NO SOUND FROM SPEAKERS ......................3-2 2. NO SOUND IN AUX FUNCTION ......................3-3 3. NO SOUND IN PORT. IN FUNCTION ....................3-4 4. NO SOUND IN IPOD FUNCTION ......................3-5 5.

  • Page 30: Training Master

    TRAINING MASTER 1. NO SOUND FROM SPEAKERS Make sure to connect the cables to each specified Are the speaker cables connected correctly connector tightly on the unit. between the speaker terminals on the unit Connect the woofer cables to the WOOF SYSTEM and the speakers? connectors on the rear panel.

  • Page 31: Sound In Aux Function

    TRAINING MASTER 2. NO SOUND IN AUX FUNCTION Make sure to connect some cables Does the customer select correctly between the AUX IN jacks of the unit the AUX function he or her wants to listen to? and the Audio output jacks of a external Audio device. After pressing the FUNCTION, Make sure to select the AUX IN function is “AUX”...

  • Page 32: Sound In Port. In Function

    TRAINING MASTER 3. NO SOUND IN PORT. IN FUNCTION Make sure to connect a cable Does the customer select correctly between the PORT. IN jack of the unit and the Audio the PORT. IN function he or her wants to listen to? output jack of a portable device like a MP3 player.

  • Page 33: Sound In Ipod Function

    TRAINING MASTER 4. NO SOUND IN IPOD FUNCTION Does the customer select correctly Make sure to put a iPod or a iPhone the iPod function he or she wants to listen to? on the docking system on the top of the unit. Make sure that The unit supports the models as follows/iPod nano 1 G, 2 G, 3 G, 4 G, 5 G, 6 G/ Does the customer use the compatible iPod?

  • Page 34: Sound In Am/Fm Function

    TRAINING MASTER 5. NO SOUND IN AM/FM FUNCTION Does the customer select correctly Make sure to connect AM/FM antennas the AM/FM function he or she wants to listen to? on the rear panel of the unit. Make sure to select AM or FM function Is “AM or FM”...

  • Page 35: Sound In Cd Function

    TRAINING MASTER 6. NO SOUND IN CD FUNCTION Does the customer select correctly Make sure to put on a CD disc on the tray. the CD function he or she wants to listen to? Is a CD disc put on the tray correctly? Make sure to insert the CD disc upside down.
  • Page 36 TRAINING MASTER Maker sure to connect the cables Are the speaker cables connected correctly to each specified connector tightly on the unit. between the speaker terminals on the unit Connect the woofer cables to the WOOF SYSTEM and the speakers? connectors on the rear panel.

  • Page 37: Sound In Usb Function

    TRAINING MASTER 7. NO SOUND IN USB FUNCTION Does the customer select correctly Make sure to insert a USB on the USB ports the USB function he or she wants to listen to? on the bottom of the unit. Make sure to select the USB function Is “USB”...

  • Page 38: Power

    TRAINING MASTER The sound is output from the speakers. Sound OK 8. NO POWER Is the power cord plugged Make sure to plug the power cord of the unit into a electrical outlet? into a electrical outlet. If the customer can not see the red light Does the Standby LED light on the front panel, the SMPS might have any problem.

  • Page 39: One Point Repair Guide

    ONE POINT REPAIR GUIDE 1. NO POWER If the unit doesn’t work by no power problem, repair the set according to the following guide. 1-1. FUSE & BRIDGE DIODE 1-1-1. Solution Please check and replace F901, BD901, TH901, TH903 on SMPS board. 1-1-2.
  • Page 40 ONE POINT REPAIR GUIDE NO POWER If the unit doesn’t work by no power problem, repair the set according to the following guide. 1-2. D951, ZD951 1-2-1. Solution Please 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.

  • Page 41: Booting When Power On The Set

    ONE POINT REPAIR GUIDE 2. NO BOOTING WHEN POWER ON THE SET The set doesn’t work when press the power button on the front board or the remote control. 2-1. FLASH MEMORY 2-1-1. Solution Please check and replace IC101 on MAIN board. 2-1-2.

  • Page 42: Vfd Is Not Displayed When Power On The Set

    ONE POINT REPAIR GUIDE 3. VFD IS NOT DISPLAYED WHEN POWER ON THE SET When power on the set, any icons or characters on VFD are not displayed. 3-1. VFD 3-1-1. Solution Please check and replace DIG301 on FRONT board. 3-1-2.

  • Page 43: Spindle Motor

    ONE POINT REPAIR GUIDE 4. 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 servo motors in MD don’t work. This step is for checking the SPINDLE MOTOR among them.

  • Page 44: Operation Of Md

    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 servo motors in MD don’t work. This step is for checking the SLED MOTOR among them.

  • Page 45: Tray Motor

    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 servo motors in MD don’t work. This step is for checking the TRAY MOTOR among them.
  • Page 46 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 servo motors in MD don’t work. This step is for checking the TRAY OPEN/CLOSE MOTOR among them.
  • Page 47 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 doesn’t work. This step is for checking the LASER TRACKING ACTUATOR.
  • Page 48 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 doesn’t work. This step is for checking the LASER FOCUSING ACTUATOR.
  • Page 49 ONE POINT REPAIR GUIDE 5. NO SOUND There is no sound output in the CD FUNCTION, repair the set according to the follow- ing guide. 5-1. IN THE CD FUNCTION 5-1-1. Solution Please check and replace IC501, IC602, IC801 on MAIN board. 5-1-2.

  • Page 50: Sound

    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. Solution Please check and replace IC701, IC702, IC703 on MAIN board. 5-2-2.
  • Page 51 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 FUNCTION 5-3-1. Solution Please check and replace IC501, IC504 on MAIN board & IC3U01 on USB board. 5-3-2.
  • Page 52 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 FUNCTION 5-4-1. Solution Please check and replace IC202 on MAIN board. 5-4-2. How to troubleshoot (Countermeasure) 1) Check AUX_L/R signals to IC202 (Pin7, 8).
  • Page 53 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 FUNCTION 5-5-1. Solution Please check and replace IC201, IC202, IC203 on MAIN board. 5-5-2.
  • Page 54 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 FUNCTION 5-6-1. Solution Please check and replace IC202 on MAIN board. 5-6-2.
  • Page 55 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 FUNCTION 5-7-1. Solution Please check and replace IC202, TU101 on MAIN board. 5-7-2. How to troubleshoot (Countermeasure) 1) Check if TUNER_LR is entered from Pin1 &...
  • Page 56 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 FUNCTION 5-8-1. Solution Please check and replace IC603, IC605 on MAIN board. 5-8-2.

  • Page 57: Electrical Troubleshooting Guide

    ELECTRICAL TROUBLESHOOTING GUIDE 1. POWER SUPPLY ON SMPS BOARD No output 3.7 / 5.6 VA Replace F901 (same fuse). F901 normal? Replace BD901. BD901 normal? D904 normal? Replace D904. IC934 normal? Replace IC934. Replace D933, D937. D933, D937 normal? Power line of MAIN PCB is short. 3-29...
  • Page 58 ELECTRICAL TROUBLESHOOTING GUIDE No output 12 V F901 normal? Replace F901 (same fuse). Replace BD901. BD901 normal? Replace D904. D904 normal? Replace D934, D935. D934, D935 normal? Replace IC931. IC931 normal? Power Line of Main PCB is short. 3-30...
  • Page 59 ELECTRICAL TROUBLESHOOTING GUIDE No output FL+/FL- P-CTRL OK? Check 3.3 V Output & P-CTRL. D931, D932 Replace D931, D932. Replace ZD931. ZD931 OK? Replace FR931. FR931 short? Check soldering of PN901. 3-31...
  • Page 60 ELECTRICAL TROUBLESHOOTING GUIDE No AMP Output Is the P-CTRL OK? VCC supplied to Check 3.3V & P-CTRL. IC911 Pin7? Q901,D904 Replace D914/ Q900/ PC901. ZD912, ZD913 Replace ZD912, ZD913. OK ? D951, D952 Replace D951, D952. OK ? Check soldering of CN902. 3-32...

  • Page 61: System Part

    ELECTRICAL TROUBLESHOOTING GUIDE 2. SYSTEM PART Power on. CN301 “HELO” cable connection Display on FLD Check FFC cable (Pin29). CN301 Pin27, 28, 29 power Check SMPS board. CN301 Pin20, 21, 22 data signal Check MAIN board. Q301, 303, 304 Replace DIG301. grid voltage OK? Volume LED CN301 Pin18...

  • Page 62: Audio Part

    ELECTRICAL TROUBLESHOOTING GUIDE 3. NO AUDIO PART CD FUNCTION Is motor_open/ close OK? LOAD +- ok ? disc insert? (IC408 Pin9,10) Check IC301. Is motor impedance Check Loading motor. about 12 Ω? Check IC408. Focusing/ OPU driving Tracking/ Sled Signal Disc reading OK? (Focusing &...
  • Page 63 ELECTRICAL TROUBLESHOOTING GUIDE USB play IC501 Pin116,117 USB_D output Check IC501. signal OK? IC3U01 When insert USB power +5 V Replace IC3U01. USB,IC502 Pin1,2,3,4 USB_D signal OK? IC202 Pin7,8 AUX input signal Check audio cable. IC202 Check IC501. Pin42,43,44 I2S input signal IC202 Replace IC202.
  • Page 64 ELECTRICAL TROUBLESHOOTING GUIDE POT. IN IC202 Pin21,22 POT. IN input signal Check USB board. IC202 Check IC501. Pin42,43,44 I2S input signal IC202 Replace IC202. Pin41 ADC data output signal iPod IC203 IC202 Pin4 USB_VBUS 5 V Pin25,26 iPod input signal Check USB_VBUS of IC203.
  • Page 65 ELECTRICAL TROUBLESHOOTING GUIDE TUNER TU101 IC202 TUNER_L/R output Pin21,22 TUNER_L/R input Check +3.3 V of TU101. signal OK? signal OK? IC202 Pin42,43,44 I2S input Check IC501. signal OK? IC202 Pin41 ADC data output Replace IC202. signal OK? 3-37...
  • Page 66 ELECTRICAL TROUBLESHOOTING GUIDE IC501 Replace IC501. Pin83,87,88 I2S data output signal OK? IC507 Check IC507. Pin2,17 DAC_BCK/LRCK input signal OK? IC507 Replace IC507. Pin7,14 BEAT_LRCK/BCK output signal OK? IC501 Check IC501. Pin83 BEAT_DAC_DATA output signal OK? IC501 Check IC501. Pin83 BEAT_DAC_DATA output signal OK? IC801 Check IC501.

  • Page 67: Digital Audio Amp Check

    ELECTRICAL TROUBLESHOOTING GUIDE 4. DIGITAL AUDIO AMP CHECK IC602 I2S input signal Check IC801 & IC501. IC602 PWM data output signal Replace IC602. IC701 IC702 IC703 FL±/FR± input signal SW1±/SW2± input signal RL±/RR± input signal Check IC602. Check IC602. +12 VA, +48 V Check SMPS.

  • Page 68: Waveforms

    WAVEFORMS 1. WAVEFORM OF SP- & SP+ FOR 2. WAVEFORM OF SL- / SL+ FOR DRIVING SPINDLE MOTOR DRIVING SLED MOTOR 3. WAVEFORM OF TUR_M+ & TUR_M- 4. WAVEFORM OF LO- & LO+ FOR DRIV- FOR DRIVING TRAY MOTOR ING PICKUP MODULE UP/DOWN MOTOR 3-40...
  • Page 69 5. WAVEFORM OF RF SERVO 6. WAVEFORM OF VFD GRID CUR- RENT DRIVER 7. WAVEFORM OF USB_D± 3-41...
  • Page 70 MEMO 3-42...

  • Page 71: Wiring Diagram

    WIRING DIAGRAM 3-43 3-44...

  • Page 72: Block Diagrams

    BLOCK DIAGRAMS 1. OVERALL BLOCK DIAGRAM A,B,C,D,E,F USB1 USB1 USB2 USB2 IC407 BU9543KV RF+ SERVO DSP iPod P/UP USB HUB USB2512B USB_D IC408 SLED IC504 S3053 SPDO/SLDO/FOD/TRD USB_RESET/SCL/SDA SPIN AUDIO L/R CP for Motor CP_RESET/SCL/SDA LOAD MOT_MUTE/CLOSE/OPEN IPOD Drive IPOD_PCTRL/RX/TX/DET/READAY OPEN/CLOSE/LIMIT/UPDN/D_SENSE IC501 TUR_M...

  • Page 73: Smps Block Diagram

    2. SMPS BLOCK DIAGRAM MAIN STR-A6252 for Main Power TRANS Rectifier Circuit (Bridge, CAPACITOR) Filter Section (Varistor, Resistor, Line Filter Snubber Thermistor) Digital TRANS AMP Power & Power MAIN UC3844 for Main Power & OPTIONAL PART 3-47 3-48...

  • Page 74: Power Block Diagram

    3. POWER BLOCK DIAGRAM IC509 IC605 IC201 VCC12 SPEANA IC701/702/703 KIA1112F MIC AMP IPOD AMP SMPS Q601 FRONT LED VOLUME LED POW AMP S4308 NJM2794 9EA x 2 Q701 TAS5631 IC501 MLC9800 +12V IC503 12VA FLASH MX25L8005 IC502 SDRAM IC100 IC101 IC103 EM638165...

  • Page 75: Circuit Diagrams

    MODIFIED OR ALTERED WITHOUT PERMISSION IMPLEMENTATION OF THE LATEST SAFETY AND during Play mode. FROM THE LG CORPORATION. ALL COMPONENTS PERFORMANCE IMPROVEMENT CHANGES INTO SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL THE SET IS NOT DELAYED UNTIL THE NEW SERVICE TO THOSE IN THE ORIGINAL CIRCUIT.

  • Page 76: Micom Circuit Diagram

    2. MICOM CIRCUIT DIAGRAM µ-COM EAX64003402_1_1-SD(#1) 2012.01.03 3-53 3-54...

  • Page 77: Pwm Circuit Diagram

    3. PWM CIRCUIT DIAGRAM EAX64003402_1_1-SD(#2) 2012.01.03 3-55 3-56...

  • Page 78: Amp Circuit Diagram

    4. AMP CIRCUIT DIAGRAM EAX64003402_1_1-SD(#3) 2012.01.03 3-57 3-58...

  • Page 79: Dsp Circuit Diagram

    5. DSP CIRCUIT DIAGRAM EAX64003402_1_1-SD(#4) 2012.01.03 3-59 3-60...

  • Page 80: Rf Servo Circuit Diagram

    6. RF SERVO CIRCUIT DIAGRAM RF SERVO EAX64003402_1_1-SD(#5) 2012.01.03 3-61 3-62...

  • Page 81: Adc Circuit Diagram

    7. ADC CIRCUIT DIAGRAM EAX64003402_1_1-SD(#6) 2012.01.03 3-63 3-64...

  • Page 82: Vfd Circuit Diagram

    8. VFD CIRCUIT DIAGRAM EBY61050801 Rev 1.13 2011.01.27 3-65 3-66...

  • Page 83: Volume Circuit Diagram

    9. VOLUME CIRCUIT DIAGRAM VOLUME EBY61050901 Rev 1.10 2011.01.27 3-67 3-68...

  • Page 84: Usb & Mic Circuit Diagram

    10. USB & MIC CIRCUIT DIAGRAM USB & MIC EBY61051001 Rev 1.16 2011.01.27 3-69 3-70...

  • Page 85: Ipod Circuit Diagram

    11. IPOD CIRCUIT DIAGRAM IPOD EBY60990101 Rev 3.2 2010.11.09 3-71 3-72...

  • Page 86: Circuit Voltage Chart

    CIRCUIT VOLTAGE CHART 1. HOW TO CHECK THE VOLTAGE Turn the SMPS board over with cable connected Supply Voltage Source Spec/Rating Result and check the voltage. IC502 VDD,VDDQ 3.3 V 3.0~3.6 V 3.27 V EM638165TS-6G IC503 3.3 V 4.6 V MAX 3.27 V M25L1605D2I-12G IC504...
  • Page 87 3. CAPACITORS ON MAIN BOARD 4. CAPACITORS ON SMPS BOARD Specifi cation 240V/50Hz+10% 100V-10% 240V/50Hz+10% Loca No. Capacity Loca No. Capacity Specifi cation Voltage Voltage Voltage Voltage C109 1000 uF 6.3 V 3.38 V C900 1000 C111 47 uF 16 V 3.37 V C901 1000...

  • Page 88: Printed Circuit Board Diagrams

    PRINTED CIRCUIT BOARD DIAGRAMS 1. SMPS P.C.BOARD NOTE) Warning Parts that are critical with respect to risk of fire or electrical shock. 3-77 3-78...

  • Page 89: Main P.c.board

    2. MAIN P.C.BOARD (TOP VIEW) 3-79 3-80...
  • Page 90 MAIN P.C.BOARD (BOTTOM VIEW) 3-81 3-82...

  • Page 91: Vfd P.c.board

    3. VFD P.C.BOARD (BOTTOM VIEW) 3-83 3-84...

  • Page 92: Volume P.c.board

    4. VOLUME P.C.BOARD 3-85 3-86...

  • Page 93: Usb & Mic P.c.board

    5. USB & MIC P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 6. IPOD P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 3-87 3-88...
  • Page 94 MEMO MEMO 3-89 3-90...

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