LG CM9540 Service Manual онлайн
Mini Hi-Fi System
SERVICE MANUAL
MODEL: CM9540
(CM9540, CMS9540F/W)
CAUTION
BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS”
IN THIS MANUAL.
MODEL: CM9540 (CM9540, CMS9540F/W)SERVICE MANUAL
4102 ,MARCH76592129NFA : ON/P
Website http://biz.lgservice.com
Internal Use Only
Содержание
- Cm9540 1
- Mini hi fi system 1
- Service manual 1
- Contents 2
- Contents 3
- Esd precaution 3
- Hidden key mod 3
- Program download update guid 3
- Section 1 3
- Service information for eepro 3
- Servicing precaution 3
- Specification 3
- Summary 3
- Notes for transport and storage 4
- Notes regarding handling of the pick up 4
- Repair notes 4
- Servicing precautions 4
- Notes for repair 5
- Notes regarding compact disc player repairs 5
- Preparations 5
- Caution graphic symbols 6
- Electrostatically sensitive devices esd 6
- Esd precautions 6
- Amp clip on off 7
- Bluetooth dut 7
- Check version and option code 7
- Clear eeprom 7
- Disc lock on off cd function only active 7
- Edit eeprom 7
- Hidden key mode 7
- Power disc lock on off cd function only active 7
- Push both front key and rcu key to activate it for 5 seconds 7
- Completed 8
- Fld e2p clr 8
- Fld no disc status 8
- Fld op0 8
- Fld write ok 8
- Move to appropriate position and make changes with remote control repeat 8
- Power on 8
- Press stop key 8
- Remote control front stop push same timing 8
- Remote control front stop push same timing during 5 seconds 8
- Service information for eeprom 8
- Audio program 9
- On vfd display screen 9
- Program download update guide 9
- Cd program 10
- On vfd display screen 10
- Demo program 11
- On vfd display screen 11
- Eq program 12
- On vfd display screen 12
- Specifications 13
- Cabinet main chassis 14
- Contents 14
- Exploded view 14
- Section 2 14
- Cabinet and main frame section cm9540 16
- Exploded views 16
- Mechanism deck section dp17tm2 17
- Packing accessory section 18
- 1 front speaker cms9540f 19
- Left speaker 19
- Speaker section 19
- Front speaker cms9540f 20
- Right speaker 20
- 2 subwoofer speaker cms9540w 21
- Contents 22
- Electrical 22
- Section 3 22
- 1 1 solution 23
- 1 2 how to troubleshoot countermeasure 23
- 1 3 service hint any picture remark 23
- 1 fuse bridge diode thermistor 23
- If the unit doesn t work by no power problem repair the set according to the following guide 23
- No power 23
- One point repair guide 23
- 2 no amp power 24
- If the unit doesn t work by no pvdd problem repair the set according to the following 24
- No power 24
- One point repair guide 24
- 1 1 solution 25
- 1 2 how to troubleshoot countermeasure 25
- 1 3 service hint any picture remark 25
- 1 micom ic501 25
- No booting when power on the set 25
- One point repair guide 25
- The set doesn t work when press the power button on the front board or the remote control 25
- 1 1 solution 26
- 1 2 how to troubleshoot countermeasure 26
- 1 3 service hint any picture remark 26
- 1 vfd dig300 26
- One point repair guide 26
- Vfd is not displayed when power on the set 26
- When power on the set any icons or characters on vfd are not displayed 26
- No booting in cd usb function 27
- One point repair guide 27
- 2 1 solution 28
- 2 2 how to troubleshoot countermeasure 28
- 2 3 service hint any picture remark 28
- 2 crystal x500 28
- Cd or usb on vfd it will not display other message on vfd and it will not boot up normally 28
- No booting in cd usb function 28
- One point repair guide 28
- 3 1 solution 29
- 3 2 how to troubleshoot countermeasure 29
- 3 3 service hint any picture remark 29
- 3 serial flash ic503 29
- Cd or usb on vfd it will not display other message on vfd and it will not boot up normally 29
- No booting in cd usb function 29
- One point repair guide 29
- 4 1 solution 30
- 4 2 how to troubleshoot countermeasure 30
- 4 3 service hint any picture remark 30
- 4 sdram ic502 30
- Cd or usb on vfd it will not display other message on vfd and it will not boot up normally 30
- No booting in cd usb function 30
- One point repair guide 30
- 5 dsp ic ic501 31
- Cd or usb on vfd it will not display other message on vfd and it will not boot up normally 31
- No booting in cd usb function 31
- One point repair guide 31
- 1 spindle motor 32
- No operation of md driving the servo motors 32
- One point repair guide 32
- 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 32
- 2 sled motor 33
- No operation of md driving the servo motors 33
- One point repair guide 33
- 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 33
- No operation of md driving the servo motors 34
- One point repair guide 34
- 4 2 how to troubleshoot countermeasure 35
- 4 3 service hint any picture remark 35
- 4 laser tracking actuator 35
- 5 1 solution 35
- No operation of md driving the servo motors 35
- One point repair guide 35
- 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 35
- 5 1 solution 36
- 5 2 how to troubleshoot countermeasure 36
- 5 3 service hint any picture remark 36
- 5 laser focusing actuator 36
- No operation of md driving the servo motors 36
- One point repair guide 36
- 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 36
- 1 in the usb function 37
- No sound 37
- One point repair guide 37
- There is no sound output in the usb function repair the set according to the following 37
- 2 1 solution 38
- 2 2 how to troubleshoot countermeasure 38
- 2 3 service hint any picture remark 38
- 2 in the aux function 38
- No sound 38
- One point repair guide 38
- There is no sound output in the aux function repair the set according to the fol lowing guide 38
- 3 1 solution 39
- 3 2 how to troubleshoot countermeasure 39
- 3 3 service hint any picture remark 39
- 3 in the port in function 39
- No sound 39
- One point repair guide 39
- There is no sound output in the port in function repair the set according to the following guide 39
- 4 1 solution 40
- 4 2 how to troubleshoot countermeasure 40
- 4 3 service hint any picture remark 40
- 4 in the tuner function 40
- No sound 40
- One point repair guide 40
- There is no sound output in the tuner function repair the set according to the following guide 40
- 5 1 solution 41
- 5 2 how to troubleshoot countermeasure 41
- 5 3 service hint any picture remark 41
- 5 in the mic in function 41
- No sound 41
- One point repair guide 41
- There is no sound output in the mic in function repair the set according to the following guide 41
- 6 1 solution 42
- 6 2 how to troubleshoot countermeasure 42
- 6 3 service hint any picture remark 42
- 6 in the bluetooth function 42
- No sound 42
- One point repair guide 42
- There is no sound output in the bluetooth function repair the set according to the following guide 42
- 1 1 solution 43
- 1 2 how to troubleshoot countermeasure 43
- 1 3 service hint any picture remark 43
- 1 ic700 ic705 43
- Audio output is small or no audio output 43
- Audio signal output is small or not when you power on the middle power mini system 43
- One point repair guide 43
- 1 1 solution 44
- 1 2 how to troubleshoot countermeasure 44
- 1 3 service hint any picture remark 44
- 1 amp fets 44
- It doesn t turn on and blinks standby led red 44
- No power on standby led is blinking 44
- One point repair guide 44
- 1 1 solution 45
- 1 2 how to troubleshoot countermeasure 45
- 1 3 service hint any picture remark 45
- 1 amp ic 45
- One point repair guide 45
- Speaker no audio 45
- Electrical troubleshooting guide 46
- Power supply on smps board 46
- Electrical troubleshooting guide 47
- Electrical troubleshooting guide 48
- Electrical troubleshooting guide 49
- Electrical troubleshooting guide 50
- System part 50
- Electrical troubleshooting guide 51
- No audio part 51
- Electrical troubleshooting guide 52
- Electrical troubleshooting guide 53
- Electrical troubleshooting guide 54
- Electrical troubleshooting guide 55
- Electrical troubleshooting guide 56
- No lighting woofer speaker 56
- Figure 1 1 cd 16m ic407 pin31 figure 1 2 servo fe te fod rf ic407 pin61 62 63 ic408 pin1 57
- Waveform of servo 57
- Waveforms of major check point 57
- Waveform of motor drive 58
- Waveform of adc 5 waveform of usb 59
- Waveform of audio signal 59
- Waveform of crystal 7 60
- Waveform of vfd grid current driver 60
- Mic portable 62
- P 1 5mm 62
- Wiring diagram 62
- Block diagrams 63
- Am5890 motor drive 64
- Cs5346 64
- Dac ic az4580 64
- Deck mechanism 64
- Driver irs2092 x 4ea 64
- Eeprom 64
- Fet irf6775 x 12ea 64
- Front 385w x 2 surr 385w x 2 woofer 385w x 2 64
- Ir receiver 64
- Lc78615erf servo 64
- Main system block diagram 64
- Mbit sdram 64
- Mbyte serial flash 64
- Micom r5f100geafb 64
- Mlc3730 mcs logic 64
- Portable 64
- S4308 mic 64
- Tas5548 pwm 64
- Vfd dig301 64
- Volume key 64
- Main power block diagram 65
- 49 3 50 66
- Circuit diagrams 66
- Smps power 1 circuit diagram 66
- 51 3 52 67
- Smps power 2 circuit diagram 67
- 53 3 54 68
- Main cd dsp circuit diagram 68
- 55 3 56 69
- Main rf servo circuit diagram 69
- 57 3 58 70
- Main adc pwm circuit diagram 70
- 59 3 60 71
- Main amp circuit diagram 71
- 61 3 62 72
- Front volume circuit diagram 72
- 63 3 64 73
- Mic portable circuit diagram 73
- 65 3 66 74
- Front speaker main circuit diagram 74
- 67 3 68 75
- Front speaker sub circuit diagram 75
- 69 3 70 76
- Woofer speaker main circuit diagram 76
- 71 3 72 77
- Woofer speaker sub circuit diagram 77
- 73 3 74 78
- Circuit voltage chart 78
- Connectors 2 capacitors 78
- Printed circuit board diagrams 79
- Smps p c board 79
- Top view 79
- Main p c board 81
- Top view 81
- Bottom view 82
- Main p c board 82
- Front volume p c board 83
- Woofer speaker main p c board 85
- Woofer speaker sub p c board 85
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