LG CM1530 Service Manual
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LG CM1530 Service Manual

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Internal Use Only
Website http://biz.lgservice.com
MICRO HI-FI SYSTEM
SERVICE MANUAL
MODEL: CM1530
(CM1530, CMS1530F)
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
P
N /
O
:
A
F
N
76015232
MARCH
,
2
0
1
3

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Summary of Contents for LG CM1530

  • Page 1 Internal Use Only Website http://biz.lgservice.com MICRO HI-FI SYSTEM SERVICE MANUAL MODEL: CM1530 (CM1530, CMS1530F) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. 76015232 MARCH...
  • 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 SERVICE INFORMATION FOR EEPROM ..................1-6 PROGRAM UPDATE GUIDE ........................1-7 1. HOW TO UPDATE MICOM PROGRAM ....................1-7 2. HOW TO UPDATE CD(ALI) PROGRAM ....................1-8 SPECIFICATIONS ............................

  • 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: Service Information For Eeprom

    SERVICE INFORMATION FOR EEPROM POWER ON CD or USB or PORTABLE or TUNE MODE Press Remote control 'PLAY' key + Set Front 'STOP' key for 3S Set Display Show page ..CD 121009-V03 Set Display Show page .... MCU 121010-V32-01001 Press Set Front ‘STOP’...

  • Page 8: Program Update Guide

    PROGRAM UPDATE GUIDE 1. HOW TO UPDATE MICOM PROGRAM (1) Change the file name to download as “(Model Name)_(Year)_(Month)_(Date).BIN”. Ex) MCU_1211010_V32 (2) Copy the file to the root folder of USB storage. (3) Put the USB into the set. Change set function to USB function. Then the upgrade process will be started with the upgrade intormation.

  • Page 9: How To Update Cd(Ali) Program

    2. HOW TO UPDATE CD(ALI) PROGRAM (1) Change the file name to download as “(Model Name)_(Version)_(Year)_(Month)_(Date).BIN”. Ex) CD 121009-V03 (2) Copy the file to the root folder of USB storage. (3) Put the USB into the set. Change set function to USB function. Then the upgrade process will be started with the upgrade intormation.

  • Page 10: Specifications

    SPECIFICATIONS • GENERAL External dimensions (W x H x D) 150 x 200 x 212 mm Operating conditions Temperature 5 °C to 35 °C (41 °F to 95 °F) y t i • INPUTS • TUNER 522 to 1 620 kHz, 520 to 1 710 kHz or 522 to 1 710 kHz •...
  • Page 11 MEMO 1-10...
  • Page 12 SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS ............................. 2-3 1. CABINET AND MAIN FRAME SECTION (CM1530) ................2-3 2. PACKING ACCESSORY SECTION ......................2-7 3. SPEAKER SECTION (CMS1530F)......................2-8...
  • Page 13 MEMO...

  • Page 14: Exploded Views

    EXPLODED VIEWS NOTES) THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE SERVICE PERSONNEL 1. CABINET AND MAIN FRAME SECTION (CM1530) TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. MAIN CABLE11 CABLE4 CABLE5 SMPS FRONT...
  • Page 15 MEMO MEMO...

  • Page 16: Packing Accessory Section

    2. PACKING ACCESSORY SECTION 801 Instruction Ass'y 824 AM Antenna 900 Remote Control 808 Battery 803T Packing 804 Bag 803B Packing 802 Box...

  • Page 17: Speaker Section (Cms1530F)

    3. SPEAKER SECTION (CMS1530F) A60L A60R...
  • Page 18 SECTION 3 ELECTRICAL CONTENTS ELECTRICAL TROUBLESHOOTING GUIDE ..................3-2 1. SMPS PART ............................3-2 2. AUDIO ABNORMAL ..........................3-4 3. AUDIO ABNORMAL IN FUNCTION MODE ................... 3-5 4. CD PART ..............................3-6 5. CD READING CHECK..........................3-7 6. USB PART .............................. 3-8 7.

  • Page 19: Electrical Troubleshooting Guide

    ELECTRICAL TROUBLESHOOTING GUIDE 1. SMPS PART PVDD F901 nomal? Replace F901 (Use same type fuse). D901 ~ D904 nomal? Replace D901 ~ D904. T901 nomal? Replace T901. Is VCC (9 V ~ 18 V) Check or replace IC902. supplied to IC901 pin2. D907 nomal? Replace D907.
  • Page 20 ELECTRICAL TROUBLESHOOTING GUIDE F901 nomal? Replace F901 (Use same type fuse). D901 ~ D904 nomal? Replace D901 ~ D904. T901 nomal? Replace T901. Is VCC (9 V ~ 18 V) Check or replace IC902. supplied to IC901 pin2. ZD902 nomal? Replace ZD902.

  • Page 21: Audio Abnormal

    ELECTRICAL TROUBLESHOOTING GUIDE 2. AUDIO ABNORMAL Audio abnormal Check the signal output Check the speakers connection. of FB711 ~ FB714. Check the signal output Replace FB711 ~ FB714. of IC702 pin1, 2, 14, 15. Check the signal input R750, R751, R733, R734 nomal? IC702 pin4, 12.

  • Page 22: Audio Abnormal In Function Mode

    ELECTRICAL TROUBLESHOOTING GUIDE 3. AUDIO ABNORMAL IN FUNCTION MODE AUX abnormal Check the signal input Check the signal input circuit (R717, R760, R768, R769, C707, C710, C711, C719, C724, C907). of IC703 pin7, 8. Check the signal input CON107 pin6, 8. Normal.

  • Page 23: Cd Part

    ELECTRICAL TROUBLESHOOTING GUIDE 4. CD PART Turn on CD Check Open / Close. Check connector CN803. Check "READING" display. Check connector CN801. Check Reading OK. Check connector CN801. Check pick-up movement. Check IC800(CD5888) and IC801(ALI5677). Replace IC800 and IC801.

  • Page 24: Cd Reading Check

    ELECTRICAL TROUBLESHOOTING GUIDE 5. CD READING CHECK Check connector locking CN800 / CN803. Normal. Check IC801 Replace X800. pin22 “XOUT”, pin23 “XIN” signal. Defective pick-up or IC800(pin11, 12), IC801 pin96 “F_DO”, Check CN803 pin3, 4 (SL-, SL+). Does sled motor move? pin97 “F_DI”, pin98 “F_CS”...

  • Page 25: Usb Part

    ELECTRICAL TROUBLESHOOTING GUIDE 6. USB PART Turn on USB Check Check power supply circuit "CHECKING" or "USB" Check connector CON107. USB +5 V. display. Check IC700 circuit Check CON107 Check reading OK. Check IC801 pin41, 42 (D+, D-). pin2, 3 (D+, D-) signal. Normal.

  • Page 26: Vfd Display Check

    ELECTRICAL TROUBLESHOOTING GUIDE 7. VFD DISPLAY CHECK Check VFD display. Replace IC103. Check IC103 Check IC103 pin36 “VFD-STB", pin37 “VFD-CLK”, IC301 normal? pin62, 63 VCC 3.3 V. pin38 “VFD-DATA”, signal. Replace Check IC301 IC301. pin25 "VCC 3.3V". Replace Check IC301 IC301.

  • Page 27: Waveforms Of Major Check Point

    WAVEFORMS OF MAJOR CHECK POINT 1. WHEN POWER ON, RESET & DATA ETC WAVEFORM RESET (CD) RESET (CD) CLK (FLASH) CLK (FLASH) F_DI F_DI F_DO F_DO Figure 1-1. 3V3SD 3V3SD SEV_3V3 M33V_PAD C821 0.1uF R817 CN800 CON2_2.0MM MUTE34 600RH R804 VREF_16 CD_TX D801...
  • Page 28 WHEN POWER ON, RESET & DATA ETC WAVEFORM RESET RESET LED_CLK LED_CLK LED_DATA LED_DATA Figure 1-2. LCD 74C175D VCC-MCU 175_SELECT CHANNEL R121 175_SELECT SELECT 6818_TX R115 CD_RX R120 OPTION:NO DAB->Add DAB->NC R144 CD_TX R107 R143 BT_RX BT_TX 6818_RX R146 VDD3V3A OPTION:NO DAB->Add DAB->NC CN101...

  • Page 29: When Usb Function Operating

    2. WHEN USB FUNCTION OPERATING USB_5V USB_5V USB_P USB_P USB_N USB_N Figure 2. USB playing PORT-DET R0603 USB+5V IPOD_GND KDS226 KDS226 8550 8550 3904 CHANG 3-12...

  • Page 30: Starting Action Waveform In Md Device (Sled Home)

    3. STARTING ACTION WAVEFORM IN MD DEVICE (SLED HOME) Figure 3. At power ON 3V3SD SPIN+ SPIN+ R846 SPIN- SPIN- SLED- SLED+ LIMIT LIMIT1 3-13...

  • Page 31: Radio Operating Tu_Da/ Clk/ Rst Waveform

    4. RADIO OPERATING TU_DA/ CLK/ RST WAVEFORM TU_RESET TU_RESET IIC_SCL IIC_SCL IIC_SDA IIC_SDA Figure 4. TU_DA/ CLK/ RST FM_ANT TUNER R-OUT L402 270NH L-OUT FB400 300RH PLL_CS IIC_SDA1 IIC_SCL1 TUNER-VDD C424 L403 2.2UH 2.2uF R414 FM-R C425 2.2uF R415 FM-L L404 2.2UH IIC_SDA1 IIC_SCL1...

  • Page 32: At First Action, Focus Signal A/ B/ C/ D

    5. AT FIRST ACTION, FOCUS SIGNAL A/ B/ C/ D Figure 5. VREF_16 VREF_16 CD+5V C837 0.01uF VREF_16 R839 CN801 XTRACK R842 R837 3.9K R843 XSPINDLE C838 0.47uF HAVC VREF_16 M33V R844 CD+5V MDPUH SPIN- C829 EC813 MAPUH SPIN+ 0.1uF MBPUH TRACK- MCPUH...

  • Page 33: Rf Waveform (Analog Scope)

    6. RF WAVEFORM (ANALOG SCOPE) Figure 6. RF Waveform 3V3SD 3V3SD SEV_3V3 M33V_PAD C821 0.1uF R817 CN800 CON2_2.0MM MUTE34 600RH R804 VREF_16 CD_TX D801 4.7K 600RH XSLEGP CD_RX C800 1N4148 EC809 C817 XSPINDLE R805 XFOCUS LIMIT 0.1uF XTRACK MUTE1 CP_SDA R800 Q800 C812...

  • Page 34: Wiring Diagram

    WIRING DIAGRAM DISPLAY DATA&KEY Ipod DATA Connection power supply Connection USB &PORT.IN UPDATING connection jack pick up connection Motor control connection AC supply Connection FM.ANT connection. 3-17 3-18...

  • Page 35: Block Diagram

    BLOCK DIAGRAM DATA A A A Front PCBA A/D KEY EEPROM 24C02 A,B,C,D,E,F DA11VZ USB PCBA LIMIT SW SMPS PCBA CP IC SMPS SMPS POWER POWER 6.2V 6.2V 3.3V 3-19 3-20...

  • Page 36: 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 37: Main-1 Circuit Diagram

    2. MAIN-1 CIRCUIT DIAGRAM 74C175D VCC-MCU 175_SELECT CHANNEL R121 175_SELECT SELECT C402 6818_TX 2.2uF FM-R R418 C403 2.2uF IC108 FM-L R115 R400 CD_RX R120 EC400 OPTION:NO DAB->Add DAB->NC R144 SOT223_AS1117_1 CD_TX R107 R143 47UF/16V BT_RX BT_TX 6818_RX R146 VDD3V3A OPTION:NO DAB->Add DAB->NC IC109 CN101...

  • Page 38: Main-2 Circuit Diagram

    3. MAIN-2 CIRCUIT DIAGRAM 3V3SD 3V3SD SEV_3V3 VREF_16 M33V_PAD VREF_16 CD+5V C821 0.1uF R817 C837 0.01uF VREF_16 CN800 R839 CN801 XTRACK CON2_2.0MM R842 MUTE34 600RH R837 3.9K R843 R804 XSPINDLE VREF_16 CD_TX D801 4.7K XSLEGP CD_RX 600RH C838 0.47uF C800 1N4148 EC809 HAVC...

  • Page 39: Main-3 Circuit Diagram

    4. MAIN-3 CIRCUIT DIAGRAM AUX_R AUX_L LOUT ROUT R731 Q711 KDT1304S D704 IN4148 Q704 R732 KDT1304S AMUTE 100K L717 56NH IPHONE_R C787 C789 47uF16V IPHONE_L 9.1V CD-R C765 FB700 56NH CD-L C793 IC701 R735 FB701 56NH 600R C760 R744 100K C794 IPOD-ROUT 600R...

  • Page 40: Main-4 Circuit Diagram

    5. MAIN-4 CIRCUIT DIAGRAM +5.2V R770 +5.2V MAINPOWER 8550 R771 TU-POWER 8550 Q703 0.1uF 8550 TUNER+5V R706 R775 Q709 TUPOWER 3904 R773 +12V 47UF/16V +5.2V R707 CN700 CD+5V +6_2V R705 +12V +5.2V R700 Q700 CDPOWER C700 3904 Q702 AF2301 0.1uF R701 PVDD IPOD_GND...

  • Page 41: Display & Usb Circuit Diagram

    6. DISPLAY & USB CIRCUIT DIAGRAM GRID13 GRID14 C312 C310 102P C309 102P LEDBUS R311 R313 HM338-10B C307 R304 R301 C301 C302 47K/NC Q302 680PF 680PF C303 100P/NC 22UF/10V 220RH 220RH 220RH 220RH 220RH 220RH USB_P+ 220RH USB_N- 220RH 80RH USB_VCC Headerphone board 220RH...

  • Page 42: Ipod Circuit Diagram

    7. IPOD CIRCUIT DIAGRAM FB207 2.7K 100M 104P R204 0R/NC R205 549k 191k/NC 14P1.0MM VIDEO OUT R-OUT FB205 FB206 ACC-POWER A-ACC-DET IP-30-DET IP-TX IP-RX IPOD+5V IP+5V IP+5V 104P MCU -GND iphone board CON201 CON8P-1.0MM/NC IP-30-DET FB204 0R/NC FB208 0R/NC IPOD+5V IP+5V IP+5V MCU -GND...

  • Page 43: Circuit Voltage Chart

    CIRCUIT VOLTAGE CHART 1. ICs 3. CAPACITORS Pin No. Specifi cation 80 V / 60 Hz Input 288 V / 50 Hz Input Pin No. Specifi cation 80 V / 60 Hz Input 288 V / 50 Hz Input 288 V / 50Hz Input Engineering Check IC102 MFI337S3959 (IP) 86(VDD-PAD)

  • Page 44: Connectors

    4. CONNECTORS 240 V / 50 Hz Input 240 V / 50 Hz Input 240 V / 50 Hz Input Pin No. Pin No. Pin No. Specifi cation Value Specifi cation Value Specifi cation Value SMPS Board 1PIN IPOD-L 0-0.9 0.15V 1PIN SP+ 0-2.8V...

  • Page 45: 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. 3-39 3-40...

  • Page 46: Main P.c.board

    2. MAIN P.C.BOARD (TOP VIEW) 3-41 3-42...
  • Page 47 MAIN P.C.BOARD (BOTTOM VIEW) 3-43 3-44...

  • Page 48: Display P.c.board

    3. DISPLAY P.C.BOARD 5. IPOD P.C.BOARD (TOP VIEW) (BOTTOM VIEW) 4. USB P.C.BOARD 3-45 3-46...
  • Page 49 MEMO MEMO 3-47 3-48...

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