LG CM 9520 Series Service Manual
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LG CM 9520 Series Service Manual

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Internal Use Only
Website http://biz.lgservice.com
Mini Hi-Fi System
SERVICE MANUAL
MODEL: CM9520
(CM9520, CMS9520F/S/W)
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
P
N /
O
:
A
F
N
7
5
7
3
4
0
63
FEBRUARY
,
2
0
1
2

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  • Page 1 Internal Use Only Website http://biz.lgservice.com Mini Hi-Fi System SERVICE MANUAL MODEL: CM9520 (CM9520, CMS9520F/S/W) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. FEBRUARY...
  • Page 2 CONTENTS SECTION 1 ..GENERAL SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..REPLACEMENT PARTS LIST...

  • Page 3: Table Of Contents

    SECTION 1 SUMMARY CONTENTS SERVICING PRECAUTIONS ........................1-3 ESD PRECAUTIONS ..........................1-5 HIDDEN KEY MODE ........................... 1-6 SERVICE INFORMATION FOR EEPROM ..................1-7 PROGRAM DOWNLOAD GUIDE ......................1-8 1. AUDIO PROGRAM ........................... 1-8 2. CD PROGRAM ............................1-9 3. BEAT BOX PROGRAM........................... 1-10 4.

  • Page 4: 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 5 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 6: 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 7: Hidden Key Mode

    HIDDEN KEY MODE Push both Front key and RCU key to activate it for 5 seconds. 1. Disc Lock On/Off (CD Function Only Active) Front Key : STOP RCU Key : STOP 2. Check Version and Option code Front Key : STOP RCU Key : PLAY/PAUSE You can change [Audio MCU Version <->...

  • Page 8: Service Information For Eeprom

    SERVICE INFORMATION FOR EEPROM POWER ON FLD no disc status Remote control ‘ ’ + Front ‘STOP’ DETECT NEW EEPROM push at a time for 5 seconds (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 CM9520_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: Cd Program

    2. CD PROGRAM Download program file name must be HE003_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: Beat Box Program

    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 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 12: Eq Program

    4. EQ PROGRAM Download program file name must be EQ_PRG.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 13: Specifications

    SPECIFICATIONS • GENERAL Power requirements Refer to main label Power consumption Refer to main label Dimensions (W x H x D) 285 x 395 x 381 Net Weight (Approx.) 6,2 kg Operating temperature 5 °C to 35 °C (41 °F to 95 °F) Operating humidity 5 % to 90 % Bus Power Supply...
  • Page 14 SECTION 2 CABINET & MAIN CHASSIS CONTENTS DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (DVM-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 (CM9520) ................2-11 2.

  • Page 15: Disassembly And Assembly For Mechanism Deck (Dvm-H1803)

    DISASSEMBLY AND ASSEMBLY FOR MECHANISM DECK (DVM-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 16: 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 17 ORDER OF DISASSEMBLY FOR MECHANISM DECK Figure 7 7) Disassemble the FFC 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 18 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 19 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 20: Order Of Assembly For Mechanism Deck

    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 21 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 22 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 23 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 24: Exploded Views

    EXPLODED VIEWS NOTES) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED 1. CABINET AND MAIN FRAME SECTION (CM9520) TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. CABLE1 CABLE6 CABLE5 iPod SMPS CABLE4 CABLE7 MAIN VOLUME...

  • Page 25: Mechanism Deck Section (Dvm-H1803)

    MEMO 2. MECHANISM DECK SECTION (DVM-H1803) 153A 035A...

  • Page 26: 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 803 Packing 802 Box...

  • Page 27: Speaker Section

    4. SPEAKER SECTION 4-1. FRONT SPEAKER (CMS9520F) A60L A60R...
  • Page 28 4-2. REAR SPEAKER (CMS9520S) A80L A80R...
  • Page 29 4-3. PASSIVE SUBWOOFER (CMS9520W)
  • Page 30 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 31: 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 32: 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 33: 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 34: 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 35: 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 36: 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 37 TRAINING MASTER 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 38: Sound In Usb Function

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

  • Page 39: 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 40: 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, TH902 on SMPS board. 1-1-2.
  • Page 41 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 / D952, ZD951 1-2-1. Solution Please check and replace D951 / D952, ZD951 on SMPS board. 1-2-2.

  • Page 42: 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 (IC101) 2-1-1. Solution Please check and replace IC101 on MAIN board. 2-1-2.

  • Page 43: 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 44 ONE POINT REPAIR GUIDE 4. NO BOOTING IN CD/USB FUNCTION After you turn on power key and displayed message in the following order (HELLO --> VOL XX --> CD or USB) on VFD, it will not display other message on VFD, and it will not boot-up normally. 4-1.

  • Page 45: Booting In Cd/Usb Function

    ONE POINT REPAIR GUIDE NO BOOTING IN CD/USB FUNCTION After you turn on power key and displayed message in the following order (HELLO --> VOL XX --> CD or USB) on VFD, it will not display other message on VFD, and it will not boot-up normally. 4-2.
  • Page 46 ONE POINT REPAIR GUIDE NO BOOTING IN CD/USB FUNCTION After you turn on power key and displayed message in the following order (HELLO --> VOL XX --> CD or USB) on VFD, it will not display other message on VFD, and it will not boot-up normally. 4-3.
  • Page 47 ONE POINT REPAIR GUIDE NO BOOTING IN CD/USB FUNCTION After you turn on power key and displayed message in the following order (HELLO --> VOL XX --> CD or USB) on VFD, it will not display other message on VFD, and it will not boot-up normally. 4-4.
  • Page 48 ONE POINT REPAIR GUIDE NO BOOTING IN CD/USB FUNCTION After you turn on power key and displayed message in the following order (HELLO --> VOL XX --> CD or USB) on VFD, it will not display other message on VFD, and it will not boot-up normally. 4-5.
  • Page 49 ONE POINT REPAIR GUIDE 5. 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 50: 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 51 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 52 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 53 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 54 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 55 ONE POINT REPAIR GUIDE 6. NO SOUND There is no sound output in the CD FUNCTION, repair the set according to the follow- ing guide. 6-1. IN THE CD FUNCTION 6-1-1. Solution Please check and replace IC501, IC602, IC801 on MAIN board. 6-1-2.

  • Page 56: Sound

    ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the USB FUNCTION, repair the set according to the fol- lowing guide. 6-2-1. IN THE USB FUNCTION 6-2-1-1. Solution Please check and replace IC501, IC504 on MAIN board & IC3U01 on USB board. 6-2-1-2.
  • Page 57 ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the USB FUNCTION, repair the set according to the fol- lowing guide. 6-2-2. IN THE USB FUNCTION 6-2-2-1. Solution Please check and replace IC501, IC504 on MAIN board & IC3U01 on USB board. 6-2-2-2.
  • Page 58 ONE POINT REPAIR GUIDE NO SOUND There is no sound output by DIGITAL AUDIO AMP DAMAGE, repair the set according to the following guide. 6-3. BY DIGITAL AUDIO AMP DAMAGE (IN ALL FUNCTIONS) 6-3-1. Solution Please check and replace IC701, IC702, IC703 on MAIN board. 6-3-2.
  • Page 59 ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the AUX FUNCTION, repair the set according to the fol- lowing guide. 6-4. IN THE AUX FUNCTION 6-4-1. Solution Please check and replace IC202 on MAIN board. 6-4-2. How to troubleshoot (Countermeasure) 1) Check AUX_L/R signals to IC202 (Pin7, 8).
  • Page 60 ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the IPOD FUNCTION, repair the set according to the fol- lowing guide. 6-5. IN THE IPOD FUNCTION 6-5-1. Solution Please check and replace IC201, IC202, IC203 on MAIN board. 6-5-2.
  • Page 61 ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the PORT. IN FUNCTION, repair the set according to the following guide. 6-6. IN THE PORT. IN FUNCTION 6-6-1. Solution Please check and replace IC202 on MAIN board. 6-6-2.
  • Page 62 ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the TUNER FUNCTION, repair the set according to the following guide. 6-7. IN THE TUNER FUNCTION 6-7-1. Solution Please check and replace IC202, TU101 on MAIN board. 6-7-2. How to troubleshoot (Countermeasure) 1) Check if TUNER_LR is entered from Pin1 &...
  • Page 63 ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the MIC IN FUNCTION, repair the set according to the following guide. 6-8. IN THE MIC IN FUNCTION 5-8-1. Solution Please check and replace IC603, IC605 on MAIN board. 6-8-2.

  • Page 64: Electrical Troubleshooting Guide

    ELECTRICAL TROUBLESHOOTING GUIDE 1. POWER SUPPLY ON SMPS BOARD No output 5.7 VA Replace F901 (same fuse). F901 normal? Replace BD901. BD901 normal? D904 normal? Replace D904. Replace D933, D937. D933, D937 normal? Power line of MAIN PCB is short. 3-35...
  • Page 65 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. 3-36...
  • Page 66 ELECTRICAL TROUBLESHOOTING GUIDE No output FL+ / FL- P-CTRL OK? Check 12 V output & P-CTRL. D931, D932 Replace D931, D932. Replace ZD931. ZD931 OK? Replace FR931. FR931 short? Check soldering of PN901. 3-37...
  • Page 67 ELECTRICAL TROUBLESHOOTING GUIDE No AMP Output Is the P-CTRL OK? VCC supplied to Check 3.3 V & P-CTRL. IC911 Pin7? Q901,D904 Replace D904, Q901, PC911. ZD912, ZD913 Replace ZD912, ZD913. OK ? D951, D952 Replace D951, D952. OK ? Check soldering of CN902. 3-38...

  • Page 68: System Part

    ELECTRICAL TROUBLESHOOTING GUIDE 2. SYSTEM PART Power on. CN301 “HELLO” cable connection Display on FLD Check FFC cable (17P). CN301 Pin15, 16, 17 power Check SMPS board. CN301 Pin8, 9, 10 data signal Check MAIN board. Q301, 303, 304 Replace DIG301. grid voltage OK? Volume LED CN3V01 Pin30...

  • Page 69: Audio Part

    ELECTRICAL TROUBLESHOOTING GUIDE 3. NO AUDIO PART CD FUNCTION Is motor_open/ close OK? LOAD +- OK? disc insert? (IC408 Pin9,10) Check IC501. Is motor impedance Check Loading motor. about 12 Ω? Check IC408. Focusing/ OPU driving Tracking/ Sled Signal Disc reading OK? (Focusing &...
  • Page 70 ELECTRICAL TROUBLESHOOTING GUIDE USB play IC501 Check IC501. Pin16,18 USB_HUB_D output signal OK? IC3U01 When insert USB power +5 VU Replace IC3U01. USB,IC504 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 71 ELECTRICAL TROUBLESHOOTING GUIDE POT. IN IC202 Pin21,22 POT. IN input signal Check MIC 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 Pin26,27 iPod input signal Check USB_VBUS of IC203.
  • Page 72 ELECTRICAL TROUBLESHOOTING GUIDE TUNER TU101 IC202 TUNER_L/R output Pin23,24 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? 3-43...
  • Page 73 ELECTRICAL TROUBLESHOOTING GUIDE IC501 Replace IC501. Pin4, 5, 6 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. Pin6 BEAT_DAC_DATA output signal OK? IC801 Check IC501.

  • Page 74: 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.

  • Page 75: Lighting (Woofer Speaker)

    5. NO LIGHTING (WOOFER SPEAKER) CD/ USB play JK101,102 Pin 3,7 Check IC801. I2C signal OK? Pin8 +12 V OK? Check SMPS board. Check IC601 OK? Replace IC601. Pin1 +3.3 V OK? Check Woofer SPK. Check SMPS board. 3-46...

  • Page 76: Waveforms

    WAVEFORMS 1. SERVO WAVEFORM Figure 1-1. CD-16M Figure 1-2. Servo - FE, TE, FOD, RF IC407 pin31 IC407 pin61, pin62, pin63 / IC408 pin1 3-47...
  • Page 77 2. MOTOR DRIVE WAVEFORM Figure 2-1. SP- & SP+ for driving Spindle motor Figure 2-2. SL- & SL+ for driving Spindle motor IC408 pin17, pin18 IC408 pin11, pin12 Figure 2-3. TUR_M/ M- for driving Turret motor Figure 2-4. LO- & LO+ for driving Tray motor IC406 pin2, pin5 IC408 pin9, pin10 3-48...
  • Page 78 3. AUDIO PATH WAVEFORM LRCK LRCK DATA DATA Figure 3-1. CD-I2S Figure 3-2. IC407 pin34, pin35, pin36 IC501 pin95, pin96, pin97 LRCK DATA Figure 3-3. Figure 3-4. IC801 E19, G19, F19, A14 IC602(PWM IC) pin4, pin5, pin6, pin9 3-49...
  • Page 79 AUDIO_L AUDIO_R Figure 3-5. AUDIO_L/R 4. ADC WAVEFORM LRCK DATA DATA Figure 4-1. ADC I2C Figure 4-2. ADC I2S IC202 pin1, pin2 IC202 pin41, pin42, pin43, pin44 3-50...
  • Page 80 5. IPOD WAVEFORM 6. USB WAVEFORM IPOD_DET IPOD_READY IPOD_RX IPOD_L Figure 5. iPod signal Figure 6. USB D+/D- CN201 pin14, pin6, pin8, pin11 CN502 pin1, pin2 & pin4, pin5 7. CRYSTAL WAVEFORM 8. BEATBOX IC POWER SEQUENCE Figure 7. 12 MHz crystal Figure 8.
  • Page 81 9. VFD GRID CURRENT DRIVER Figure 9. 3-52...

  • Page 82: Wiring Diagram

    WIRING DIAGRAM P/UP 4-3)IPOD Docking 3-53 3-54...

  • Page 83: Block Diagrams

    BLOCK DIAGRAMS 1. SMPS BLOCK DIAGRAM MAIN STR-A6053 for Main Power TRANS Rectifier Circuit (Bridge, CAPACITOR) Filter Section (Varistor, Resistor, Line Filter Snubber Thermistor) Digital TRANS AMP Power & Power MAIN NCP1252 Control IC & 3-55 3-56...

  • Page 84: Main System Block Diagram

    2. MAIN SYSTEM BLOCK DIAGRAM A,B,C,D,E,F,PD USB1 USB2 IC407 16.9344MHz 15pF BU9543KV SPDO/SLDO/FOD/TRD RF+ SERVO P/UP IC504 USB2512 LOAD ,SLED , USB HUB SPIN ,TR ,F IC408 MOT_MUTE,CLOSE,OPEN S3053 USB_HUB_DP/DN Motor Drive USB_RESET/SCL/SDA IC504 OP_SW,CL_SW,UP_SW,DN_SW,D_SE NSE CP_RESET/SCL/SDA CP for IPOD TUR_M IPOD_RX/DET IPOD...

  • Page 85: 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 86: Main - Micom Circuit Diagram

    2. MAIN - MICOM CIRCUIT DIAGRAM MICOM EAX64550401_Rev1.2-SD(#1) 2012. 01. 09 3-61 3-62...

  • Page 87: Main - Pwm / Filter Circuit Diagram

    3. MAIN - PWM / FILTER CIRCUIT DIAGRAM EAX64550401_Rev1.2-SD(#2) 2012. 01. 09 3-63 3-64...

  • Page 88: Main - Ir Amp Circuit Diagram

    4. MAIN - IR AMP CIRCUIT DIAGRAM EAX64550401_Rev1.2-SD(#3) 2012. 01. 09 3-65 3-66...

  • Page 89: Main - Dsp / Usb / Ipod Circuit Diagram

    5. MAIN - DSP / USB / IPOD CIRCUIT DIAGRAM EAX64550401_Rev1.2-SD(#4) 2012. 01. 09 3-67 3-68...

  • Page 90: Main - Rf Servo Circuit Diagram

    6. MAIN - RF SERVO CIRCUIT DIAGRAM RF SERVO EAX64550401_Rev1.2-SD(#5) 2012. 01. 09 3-69 3-70...

  • Page 91: Main - Adc Circuit Diagram

    7. MAIN - ADC CIRCUIT DIAGRAM EAX64550401_Rev1.2-SD(#6) 2012. 01. 09 3-71 3-72...

  • Page 92: Main - Beat Box Circuit Diagram

    8. MAIN - BEAT BOX CIRCUIT DIAGRAM BEAT BOX EAX64550401_Rev1.2-SD(#7) 2012. 01. 09 3-73 3-74...

  • Page 93: Front - Vfd Circuit Diagram

    9. FRONT - VFD CIRCUIT DIAGRAM EAX64550501_Rev1.3-SD 2012. 01. 09 3-75 3-76...

  • Page 94: Front - Volume Circuit Diagram

    10. FRONT - VOLUME CIRCUIT DIAGRAM VOLUME EAX64550601_Rev1.3-SD 2012. 01. 09 3-77 3-78...

  • Page 95: Front - Usb Circuit Diagram

    11. FRONT - USB CIRCUIT DIAGRAM EAX64550701_Rev1.3-SD 2012. 01. 09 3-79 3-80...

  • Page 96: Front - Mic Circuit Diagram

    12. FRONT - MIC CIRCUIT DIAGRAM MIC & PORTABLE EAX64550801_Rev1.3-SD 2012. 01. 09 3-81 3-82...

  • Page 97: Ipod Circuit Diagram

    13. IPOD CIRCUIT DIAGRAM IPOD EAX64550901_Rev1.3-SD 2012. 01. 09 3-83 3-84...

  • Page 98: Circuit Voltage Chart

    CIRCUIT VOLTAGE CHART 1. ICs IC Sym IC Name / Type Vcc/Vdd IC Sym IC Name / Type Vcc/Vdd IC Sym IC Name / Type Vcc/Vdd IC Sym IC Name / Type Vcc/Vdd LC87F5NC8A Spec: Spec: 74AHC244FT Spec: IC408 S3053 Spec: IC101 (SANYO)
  • Page 99 MEMO 2. CAPACITORS Value Value Voltage Measured Voltage Measured Location Capacitor Location Capacitor Spec voltage Spec voltage (uF) (uF) <MAIN> C244 100uF 5.61 C122 100uF 3.31 C231 47uF 5.08 C151 47uF 3.43 C236 10uF 5.19 C124 1000uF 3.41 <VFD> C601 100uF 3.32 C243...

  • Page 100: Printed Circuit Board Diagrams

    PRINTED CIRCUIT BOARD DIAGRAMS 1. SMPS P.C.BOARD (TOP VIEW) 3-89 3-90...
  • Page 101 SMPS P.C.BOARD (BOTTOM VIEW) NOTE) Warning Parts that are critical with respect to risk of fire or electrical shock. 3-91 3-92...

  • Page 102: Main P.c.board

    2. MAIN P.C.BOARD (TOP VIEW) 3-93 3-94...
  • Page 103 MAIN P.C.BOARD (BOTTOM VIEW) 3-95 3-96...

  • Page 104: Front_Vfd P.c.board

    3. FRONT_VFD P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 3-97 3-98...

  • Page 105: Front_Usb P.c.board

    4. FRONT_USB P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 5. FRONT_MIC P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 3-99 3-100...
  • Page 106 6. FRONT_VOLUME P.C.BOARD (TOP VIEW) 3-101 3-102...

  • Page 107: Front_Volume P.c.board

    FRONT_VOLUME P.C.BOARD (BOTTOM VIEW) 3-103 3-104...

  • Page 108: Ipod P.c.board

    7. IPOD P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 3-105 3-106...
  • Page 109 MEMO MEMO 3-107 3-108...

This manual is also suitable for:

Cms9520fCms9520sCms9520w

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