Related Manuals for LG DM5360K
Summary of Contents for LG DM5360K
- Page 1 Internal Use Only KARAOKE MINI HI-FI SYSTEM SERVICE MANUAL MODEL: DM5360K (DM5360K, DMS5360F) CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL. P/NO : AFN77552410 JULY, 2016...
- Page 2 CONTENTS SECTION 1 ..GENERAL SECTION 2 ..CABINET & MAIN CHASSIS SECTION 3 ..ELECTRICAL SECTION 4 ..REPLACEMENT PARTS LIST...
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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 & UPDATE GUIDE ....................1-8 SPECIFICATIONS ............................. 1-9... -
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.
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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 Remote Control key to activate it for 5 seconds. 1. Disc Lock On/Off (CD Function Only Active) Front Key : PLAY/PAUSE Remote Control Key : STOP 2. Check Version and Option code ... -
Page 8: Service Information For Eeprom
SERVICE INFORMATION FOR EEPROM POWER ON DVD LOGO Status (NO Disk status) Remote control ‘Pause’ ‘1’ ‘4’ ‘7’ ‘2’ key in order. Press number 0 ~ 9, Press character A ~ F (1 ~ 6 for a while) Move to appropriate position and make changes with remote control ‘, , , ’... -
Page 9: Program Download & Update Guide
PROGRAM DOWNLOAD & UPDATE GUIDE Caution: • When downloading the fi le, you should neither unplug the USB device, change to the other function, nor power off the device. • USB device must be unplugged when the downloading process is completed. •... -
Page 10: Specifications
SPECIFICATIONS • GENERAL Power requirements Refer to main label. Power consumption Refer to main label. Networked standby 0.5 W (If all network ports are activated.) Dimensions (W x H x D) Approx. 204.5 mm x 278 mm x 285.5 mm Net Weight (Approx.) Approx. - Page 11 1-10...
- Page 12 SECTION 2 CABINET & MAIN CHASSIS CONTENTS EXPLODED VIEWS ............................2-3 1. CABINET AND MAIN FRAME SECTION ....................2-3 2. PACKING ACCESSORY SECTION ......................2-7 3. SPEAKER SECTION ..........................2-8...
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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 TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. SMPS CABLE1 DISPLAY 258A 256A 257A 258B 256B CABLE3 257B... -
Page 16: Packing Accessory Section
2. PACKING ACCESSORY SECTION Owner’s manual Batteries Remote control Microphone 832A Disc & Songbook Packing Packing 802 Box... -
Page 17: Speaker Section
3. SPEAKER SECTION A60F A60F... - Page 18 SECTION 3 ELECTRICAL CONTENTS ONE POINT REPAIR GUIDE ..........................3-2 1. NO POWER ............................3-2 2. NO BOOTING WHEN POWER ON THE SET..................3-4 3. VFD IS NOT DISPLAYED WHEN POWER ON THE SET ..............3-5 4. NO OPERATION OF MD ........................3-6 5.
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Page 19: One Point Repair Guide
ONE POINT REPAIR GUIDE LF901 1. NO POWER UM-007/UF16-45/14mH 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 F900, BD900 or TH900 on SMPS board. 1-1-2. - Page 20 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. D907 1-2-1. Solution Please check and replace D907 on SMPS board. 1-2-2. How to troubleshoot (Countermeasure) 1) Check the anode-cathod voltage of D907 with a digital multi-meter, it is normally 0.2 ~ 0.3 V.
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Page 21: 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 display board or the remote control. 2-1. MCU (IC100) 2-1-1. Solution Please check and replace IC100 on MAIN board. 2-1-2. -
Page 22: 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 VFD on DISPLAY board. 3-1-2. - Page 23 ONE POINT REPAIR GUIDE 4. NO OPERATION OF MD When no sound output in the CD/DVD function, you can not listen to music reading data from a CD/ DVD disc if the servo motors in MD don’t work. This step is for checking the SPINDLE MOTOR among them.
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Page 24: Operation Of Md
ONE POINT REPAIR GUIDE NO OPERATION OF MD When no sound output in the CD/DVD function, you can not listen to music reading data from a CD/ DVD disc if the servo motors in MD don’t work. This step is for checking the SLED MOTOR among them. - Page 25 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 26 ONE POINT REPAIR GUIDE 5. NO SOUND There is no sound output by DIGITAL AUDIO AMP DAMAGE, repair the set according to the following guide. 5-1. BY DIGITAL AUDIO AMP DAMAGE (IN ALL FUNCTIONS) 5-1-1. Solution Please check and replace IC404, IC701 on MAIN board. 5-1-2.
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Page 27: Sound
ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the USB FUNCTION, repair the set according to the following guide. 5-2. IN THE USB FUNCTION 5-2-1. Solution Please check and replace IC800 on MAIN board and DISPLAY board. 5-2-2. - Page 28 ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the AUX FUNCTION, repair the set according to the following guide. 5-3. IN THE AUX FUNCTION 5-3-1. Solution Please check and replace IC402 on MAIN board. 5-3-2. How to troubleshoot (Countermeasure) 1) Check AUDIO_RIN, AUDIO_LIN signals to IC402 pin23, 24.
- Page 29 ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the TUNER FUNCTION, repair the set according to the following guide. 5-4. IN THE TUNER FUNCTION 5-4-1. Solution Please check and replace IC401 on MAIN board. 5-4-2. How to troubleshoot (Countermeasure) 1) Check if TUL_L/R is entered from pin14, 13 of IC401 to IC402 pin26, 27.
- Page 30 ONE POINT REPAIR GUIDE NO SOUND There is no sound output in the Bluetooth FUNCTION, repair the set according to the following guide. 5-5. IN THE BLUETOOTH FUNCTION 5-5-1. Solution Please check and replace BT201 on Bluetooth board. 5-5-2. How to troubleshoot (Countermeasure) 1) Check if BT_TX, BT_RX is entered from pin10, 11 of BT201 to IC100 pin34, 35.
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Page 31: Electrical Troubleshooting Guide
ELECTRICAL TROUBLESHOOTING GUIDE 1. POWER (SMPS) No 5.1 VA F900 normal? Replace F900 (Use the same fuse). BD900 normal? Replace BD900. TH900 normal? Replace TH900. Is Vcc (10 V ~ 18 V) supplied to D903 normal? IC904 pin3? Check or replace D903. D906 normal? Replace D906. - Page 32 ELECTRICAL TROUBLESHOOTING GUIDE No PVDD(28 V) F900 normal? Replace F900 (Use the same fuse). BD900 normal? Replace BD900. TH900 normal? Replace TH900. Is Vcc (14 V ~ 26 V) supplied to D903 normal? IC901 pin6? Check or replace D903. Q901 base “H”? •...
- Page 33 ELECTRICAL TROUBLESHOOTING GUIDE No 12 V Is Vcc (12 V) Check or replace D906. supplied to D906? Q905 pin2 “H”? Check P-CTRL “H” signal from MCU. Check or replace IC905. No VFD Is VFD (5 V) supplied to CON301 pin1? Check or replace D304.
- Page 34 ELECTRICAL TROUBLESHOOTING GUIDE 2. MPEG PART CHECK MPEG PART Check if voltage Refer to SMPS troubleshooting. of CON103 pin8 is 5.1 VA. Check if IC105 Check and change IC105. have 3.3 V output. Check if IC106 Check and change IC106. have 1.2 V output.
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Page 35: Fld Display Check
ELECTRICAL TROUBLESHOOTING GUIDE 3. FLD DISPLAY CHECK FLD DISPLAY Check Refer to SMPS/MPEG CON301 pin1 input troubleshooting. voltage 5 V. Check D304 Check and change D304. input voltage 5 V? Check T301 Check and change pin6, 7 output voltage AC2.6 V. Check D305 pin1 output Q304, Q305, Q306, Q307. -
Page 36: Pwm Modulation Check
ELECTRICAL TROUBLESHOOTING GUIDE 4. PWM MODULATION CHECK PWM MODULATION PART Check Refer to CON103 pin8 SMPS troubleshooting. (5.1 V). • Check IC404 pin6, 17, 34, 43, 52 (VDD 3.3 V). • Check X402 (24.576 MHz). Check Check X402 Replace X402. X402(24.576 MHz) (24.576 MHz). -
Page 37: Power Amp Part Check
ELECTRICAL TROUBLESHOOTING GUIDE 5. POWER AMP PART CHECK POWER AMP PART Check CON103 Refer to SMPS troubleshooting. pin7: +12 V, pin3, 4: 28 V. Check IC701 pin29, 30, 31, 36, 37, 38 input voltage(28 V). Check each line resistor output voltage. Check IC701 pin2: +12 V input. -
Page 38: Function Check
ELECTRICAL TROUBLESHOOTING GUIDE 6. FUNCTION CHECK FUNCTION CHECK Check IC402 pin9, 10(BT), pin23, 24(AUX), pin26, 27(TUNER) input. Check IC402 Check L103, L104. Replace L103, L104. pin14: 5 V, pin5: 3.3 V. IC402 Check IC402 Check IC100 pin15, 29, 33. pin41, 42, 43, 44 pin6: RST, pin1: SDA, output data. -
Page 39: Tuner Function Check
ELECTRICAL TROUBLESHOOTING GUIDE 7. TUNER FUNCTION CHECK TUNER FUNCTION Check IC401 pin11: +3.3 V. Check FB403 Input voltage(5.1 V). Replace FB403. Check IC401 pin8(SDA), pin7(SCL). IC100 output data. Refer to function check. 3-22... -
Page 40: Cd/Dvd Function Check
ELECTRICAL TROUBLESHOOTING GUIDE 8. CD/DVD FUNCTION CHECK CD/DVD FUNCTION Is Motor_open/close OK? Can the Is load +,- ok? (IC803 pin6, 7) disc insert? Check IC803. Is Motor ok? (about 12 Ω) Check loading motor. Check IC803 (Motor drive IC). Focus, IM driving Disc reading tracking, sled signal... -
Page 41: Usb Function Check
ELECTRICAL TROUBLESHOOTING GUIDE 9. USB FUNCTION CHECK USB FUNCTION Plug-in USB device. Check CON301. Check USB_5V. Display “NO USB”. Check USB_D+/D- Check USB jack. Display “READ”. (FB408, FB409, F101). Display “NO FILE”. Check IC800 (pin20, 21). Replace IC800. Check USB audio file in USB device (MP3, WMA file is playable) 3-24... -
Page 42: Bluetooth Function Check
ELECTRICAL TROUBLESHOOTING GUIDE 10. BLUETOOTH FUNCTION CHECK Bluetooth FUNCTION Connect Check Bluetooth 3.3 V. Check CON201. bluetooth device. Display “PAIRED”. Replace bluetooth module. Check IC107. No sound. Replace IC701. Refer to function check. Check CON103 pin9. 3-25... -
Page 43: Waveforms Of Major Check Point
WAVEFORMS OF MAJOR CHECK POINT 1. SYSTEM 27 MHz CLOCK, RESET, FLASH R/W SIGNAL DVD_RST 1.2 V 3.3 V Fig 1-1. MT1389 main clock is at 27 MHz Fig 1-2. MT1389 reset is high active. (X801) MT1389GH TRIN FG_/_GPIO2 5.1R USBDP USB_DP 5.1R... - Page 44 SYSTEM 27 MHz CLOCK, RESET, FLASH R/W SIGNAL SF-DI SF-DO Fig 1-3. Flash R/W enable signal during download (Downloading). TRAY_OPEN TXCP TXC- TRAY_CLOSE TXCN AGND12_TX2 C824 10uF MT1389GH AGND33_TX C823 FG_/_GPIO2 AVDD33_12 104P USB_DP EXT_RES R809 USB_DM AVSS12 2.7K HPLUG VDD33_USB GPIO10_/_HPLG LQFP176...
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Page 45: Sdram Clock
2. SDRAM CLOCK Fig 2. MT1389 main clock SDV33 C853 104P VDD1 GND2 DQ15 DQ15 C859 104P VDDQ1 GNDQ2 DQ14 DQ14 DQ13 DQ13 C857 GNDQ1 VDDQ3 104P DQ12 DQ12 DQ11 DQ11 C854 104P VDDQ2 GNDQ DQ10 DQ10 C856 GNDQ4 VDDQ 104P VDD2 GND1... -
Page 46: Tray Open/Close Signal
3. TRAY OPEN/CLOSE SIGNAL OPENSW OPENSW CLOSESW CLOSESW OPEN OPEN CLOSE CLOSE Fig 3-1. Tray open/close waveform Fig 3-2. Tray close waveform OPENSW CLOSESW OPEN CLOSE Fig 3-3. Tray open waveform EC807 IC803 C871 R867 C880 470uF/10V CD5888 104P 104P R868 C872 FODO... -
Page 47: Sled Control Related Signal (No Disc Condition)
4. SLED CONTROL RELATED SIGNAL (NO DISC CONDITION) Fig 4 VCC5V FB826 EC807 IC803 C880 R806 470uF/10V CD5888 104P C899 104P FODO M_STBY VINFC MUTE SVREF SVREF SVREF TRB_1 BIAS TRDO REG02 VINTK SLDO VINSL TRB_2 C896 C895 C890 REG01 RESET 104P 104P... -
Page 48: Lens Control Related Signal (No Disc Condition)
5. LENS CONTROL RELATED SIGNAL (NO DISC CONDITION) Fig 5 VCC5V FB826 EC807 IC803 C880 R806 470uF/10V CD5888 104P C899 104P FODO M_STBY VINFC MUTE SVREF SVREF SVREF TRB_1 BIAS TRDO REG02 VINTK SLDO VINSL TRB_2 C896 C895 C890 REG01 RESET 104P 104P... -
Page 49: Laser Power Control Related Signal (No Disc Condition)
6. LASER POWER CONTROL RELATED SIGNAL (NO DISC CONDITION) Fig 6 C848 C158 101P C159 101P C842 C838 104P 121P C839 10uF VCC1.2 RFV12 101P C170 FB801 RFV12 C169 101P 600R C803 C8A1 C801 104P 10uF 104P VCC3.3 R802 FB802 2AVDD12_2 101R AVDD33_1... -
Page 50: Disc Type Judgement Waveforms
7. DISC TYPE JUDGEMENT WAVEFORMS Fig 7-1 Fig 7-2 Fig 7-3 Fig 7-4 AVDD33 AVDD33_2 C807 IC803 SPIND C880 70uF/10V CD5888 104P VR_CD TRAY_OPEN C842 VR_DVD TRAY_CLOSE 121P VINFC MUTE TRIN FG_/_GPIO2 5.1R USBDP USB_DP TRB_1 BIAS 5.1R USBDM USB_DM VDD33_USB REG02 VINTK... - Page 51 8. SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION) Fig 8-1 VCC5V FB826 EC807 IC803 C880 R806 470uF/10V CD5888 104P C899 104P FODO M_STBY VINFC MUTE SVREF SVREF SVREF TRB_1 BIAS TRDO REG02 VINTK SLDO VINSL TRB_2 C896 C895 C890 REG01 RESET 104P 104P 10uF...
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Page 52: Spindle Control Waveforms (No Disc Condition)
SPINDLE CONTROL WAVEFORMS (NO DISC CONDITION) Fig 8-2 Fig 8-3 Fig 8-4 Fig 8-5 EC807 IC803 AVDD33 AVDD33_2 C880 R806 470uF/10V SPIND CD5888 104P C899 VR_CD TRAY_OPEN 104P VR_DVD TRAY_CLOSE FODO M_STBY VINFC MUTE SVREF SVREF TRIN TRB_1 BIAS FG_/_GPIO2 5.1R USBDP USB_DP... -
Page 53: Mt1389 Video Output Waveforms
9. MT1389 VIDEO OUTPUT WAVEFORMS Fig 9 C848 C158 101P C159 101P C842 C838 104P 121P C839 10uF VCC3.3 C170 101P IC800 C169 101P MT1389G/176 C803 VCC5V FB808 104P 600R Q800 RCR1511SI R802 101R 2AVDD12_2 GPIO31 VCC1.2 FB807 AVDD33_1 GPIO30 XTALI GPIO29 600R... -
Page 54: Audio Output From Mt1389
10. AUDIO OUTPUT FROM MT1389 Fig 10. Audio related Signal C848 C158 101P C159 101P C842 C838 104P 121P C839 10uF VCC3.3 C170 101P IC800 C169 101P MT1389G/176 C803 VCC5V FB808 104P 600R Q800 RCR1511SI R802 101R 2AVDD12_2 GPIO31 VCC1.2 FB807 AVDD33_1 GPIO30... -
Page 55: Audio Output From Ps9860
11. AUDIO OUTPUT FROM PS9860 Fig 11-1. AMP WAVEFORMS PS9860 Fig 11-2. AMP WAVEFORMS PS9860 C431 FB405 104P 600R C430 X402 104P 24.576MHz IC404 PS9860 R446 C444 C445 VSSA_PLL VSS-4 VSS_PLL PWM_CH6_P VSS_IO-1 PWM_CH6_M R424 101R XOUT PWM_CH5_P PWM_CH5_M C432 VDD-CORE PWM_CH4_P R425... -
Page 56: Wiring Diagram
WIRING DIAGRAM FM ANT CD Pickup CD Pickup SPK jack motor plug DA11VP_SLM SMPS MAIN AC IN motor plug MIC plug SMPS plug AC IN BT plug Display plug BT module DISPLAY 3-39 3-40... -
Page 57: Block Diagrams
BLOCK DIAGRAMS 1. SYSTEM BLOCK DIAGRAM 2.1 Choose PWM AMP PWM SW FLASH SDRAM HDMI TAS5612 25Q16 128 M S-Video DECK MECHANISM Audio Processor PWM AMP PWM R/L 4 Ω A, B,C ,D, E, F, RF 100 W PS9860 TAS5612 CD/DVDMDI CDDVDCT, VRCD, VRDVD S77RFV6... -
Page 58: Smps Block Diagram
2. SMPS BLOCK DIAGRAM +5.2 V 1.5 A 22 uF/450 V +12 V 500 mA POWER IC 2/EMI OB2358 EEL22 2.1 Choose 2.1 Choose EI33 *120 uF 150 uF 1/EMI Transformer : EI33 EI35 120 uF/450 V Diode :10 A +27 V 3.5 A PWM IC FUSE... -
Page 59: Power Block Diagram
3. POWER BLOCK DIAGRAM SMPS +5 V 0.5 A USB PWR AP9712 110 mA MPEG FLASH EEPROM LM1117 1.2 V MT1389GH M12L64164A CS5346 25Q16 24C16 3.3V_VCC 60 mA 10 mA 20 mA 15 mA 2 mA DC/DC APS2401 3.3 V +5.2 VA TUNER 1.5 A... -
Page 60: Circuit Voltage Chart
CIRCUIT VOLTAGE CHART Location/ Name IC Name/ Type VCC/ VDD APS9712 SPEC: TYPE: SOT-23-5 VCC: 2.4 ~ 5.5 IC104 USB overcurrent protection IC VENDER: HEXIN Test value: VCC: 5.1 APS2401 SPEC: TYPE: SOT-5 VCC IN: 2.5 ~ 6.5 VENDER: chipown VCC OUT: -0.3 to Vin IC105 DC/DC IC... -
Page 61: Printed Circuit Board Diagrams
PRINTED CIRCUIT BOARD DIAGRAMS 1. SMPS P. C. BOARD (TOP VIEW) NOTE) Warning Parts that are critical with respect to risk of fire or electrical shock. 3-73 3-74... - Page 62 SMPS P. C. BOARD (BOTTOM VIEW) 3-75 3-76...
- Page 63 2. MAIN P. C. BOARD (TOP VIEW) 3-77 3-78...
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Page 64: Main P.c.board
MAIN P. C. BOARD (BOTTOM VIEW) 3-79 3-80... - Page 65 3. DISPLAY P. C. BOARD (TOP VIEW) 3-81 3-82...
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Page 66: Display P. C. Board
DISPLAY P. C. BOARD (BOTTOM VIEW) 3-83 3-84... -
Page 67: Mic P. C. Board
4. MIC P. C. BOARD (TOP VIEW) (BOTTOM VIEW) 5. BT P. C. BOARD (TOP VIEW) (BOTTOM VIEW) 3-85 3-86...