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LG CM9540 — руководство по ремонту: отсутствие звука в AUX функции [38/85]
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3-17
ONE POINT REPAIR GUIDE
NO SOUND
There is no sound output in the AUX FUNCTION, repair the set according to the fol-
lowing guide.
6-2. IN THE AUX FUNCTION
6-2-1. Solution
Please check and replace IC202 on MAIN board.
6-2-2. How to troubleshoot (Countermeasure)
1) Check AUX_L/R signals to IC202 (Pin7, 8).
2) Check if MCS_BCLK, MCS_LRCLK, & MCS_MCLK are entered from IC501 to IC202.
3) Check if ADC/MIC_DATA is entered from IC202 to IC501.
If no signal, check +5 V & +3.3 V(ADC) for IC202. If is NG, replace it a new one.
4) Check the following I2S signal flow from IC501 to IC600.
If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to
the IC is distorted or no signal, replace it with a new one.
5) Check if the digital audio AMP block is okay.
If AMP is damaged, replace it with a new one.
6-2-3. Service hint (Any picture / Remark)
w{sGGYX
w{yGGYY
pjYWY
hkjVtpjkh{hGGGyYX\tjzijrGGyYX]
tjz syjrGGyYX`
tjztjsrGGyYYX
AUX
{T
IC501
MLC3730
IC600
TAS5548
PWM
MCS_BCK
MCS_LRCK
IC202
CS5346
ADC/MIC_DATA
MCS_MCLK
AUX_L/R
IR AMP
IRS2092+IRF6775
MIX_DATA_OUT
< Signal check point >
< AUX function signal fl ow >
Содержание
291- Service manual
- Cm9540
- Mini hi fi system
- Contents
- Section 1
- Contents
- Specification
- Servicing precaution
- Service information for eepro
- Program download update guid
- Hidden key mod
- Esd precaution
- Summary
- Repair notes
- Servicing precautions
- Notes regarding handling of the pick up
- Notes for transport and storage
- Notes for repair
- Preparations
- Notes regarding compact disc player repairs
- Esd precautions
- Electrostatically sensitive devices esd
- Caution graphic symbols
- Bluetooth dut
- Amp clip on off
- Edit eeprom
- Disc lock on off cd function only active
- Clear eeprom
- Check version and option code
- Push both front key and rcu key to activate it for 5 seconds
- Power disc lock on off cd function only active
- Hidden key mode
- Power on
- Service information for eeprom
- Remote control front stop push same timing during 5 seconds
- Remote control front stop push same timing
- Press stop key
- Move to appropriate position and make changes with remote control repeat
- Fld write ok
- Fld op0
- Fld no disc status
- Fld e2p clr
- Completed
- Program download update guide
- On vfd display screen
- Audio program
- On vfd display screen
- Cd program
- On vfd display screen
- Demo program
- On vfd display screen
- Eq program
- Specifications
- Section 2
- Exploded view
- Contents
- Cabinet main chassis
- Exploded views
- Cabinet and main frame section cm9540
- Mechanism deck section dp17tm2
- Packing accessory section
- Speaker section
- Left speaker
- 1 front speaker cms9540f
- Right speaker
- Front speaker cms9540f
- 2 subwoofer speaker cms9540w
- Section 3
- Electrical
- Contents
- No power
- 1 fuse bridge diode thermistor
- 1 2 how to troubleshoot countermeasure
- If the unit doesn t work by no power problem repair the set according to the following guide
- 1 3 service hint any picture remark
- 1 1 solution
- One point repair guide
- 2 no amp power
- One point repair guide
- No power
- If the unit doesn t work by no pvdd problem repair the set according to the following
- 1 micom ic501
- The set doesn t work when press the power button on the front board or the remote control
- One point repair guide
- No booting when power on the set
- 1 3 service hint any picture remark
- 1 2 how to troubleshoot countermeasure
- 1 1 solution
- 1 vfd dig300
- 1 3 service hint any picture remark
- 1 2 how to troubleshoot countermeasure
- 1 1 solution
- When power on the set any icons or characters on vfd are not displayed
- Vfd is not displayed when power on the set
- One point repair guide
- One point repair guide
- No booting in cd usb function
- One point repair guide
- No booting in cd usb function
- Cd or usb on vfd it will not display other message on vfd and it will not boot up normally
- 2 crystal x500
- 2 3 service hint any picture remark
- 2 2 how to troubleshoot countermeasure
- 2 1 solution
- 3 3 service hint any picture remark
- 3 2 how to troubleshoot countermeasure
- 3 1 solution
- One point repair guide
- No booting in cd usb function
- Cd or usb on vfd it will not display other message on vfd and it will not boot up normally
- 3 serial flash ic503
- 4 3 service hint any picture remark
- 4 1 solution
- One point repair guide
- No booting in cd usb function
- Cd or usb on vfd it will not display other message on vfd and it will not boot up normally
- 4 sdram ic502
- 4 2 how to troubleshoot countermeasure
- One point repair guide
- No booting in cd usb function
- Cd or usb on vfd it will not display other message on vfd and it will not boot up normally
- 5 dsp ic ic501
- 1 spindle motor
- 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
- One point repair guide
- No operation of md driving the servo motors
- 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
- One point repair guide
- No operation of md driving the servo motors
- 2 sled motor
- One point repair guide
- No operation of md driving the servo motors
- 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
- One point repair guide
- No operation of md driving the servo motors
- 5 1 solution
- 4 laser tracking actuator
- 4 3 service hint any picture remark
- 4 2 how to troubleshoot countermeasure
- 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
- One point repair guide
- No operation of md driving the servo motors
- 5 laser focusing actuator
- 5 3 service hint any picture remark
- 5 2 how to troubleshoot countermeasure
- 5 1 solution
- No sound
- There is no sound output in the usb function repair the set according to the following
- One point repair guide
- 1 in the usb function
- No sound
- 2 in the aux function
- 2 3 service hint any picture remark
- 2 2 how to troubleshoot countermeasure
- 2 1 solution
- There is no sound output in the aux function repair the set according to the fol lowing guide
- One point repair guide
- There is no sound output in the port in function repair the set according to the following guide
- One point repair guide
- No sound
- 3 in the port in function
- 3 3 service hint any picture remark
- 3 2 how to troubleshoot countermeasure
- 3 1 solution
- There is no sound output in the tuner function repair the set according to the following guide
- One point repair guide
- No sound
- 4 in the tuner function
- 4 3 service hint any picture remark
- 4 2 how to troubleshoot countermeasure
- 4 1 solution
- There is no sound output in the mic in function repair the set according to the following guide
- One point repair guide
- No sound
- 5 in the mic in function
- 5 3 service hint any picture remark
- 5 2 how to troubleshoot countermeasure
- 5 1 solution
- There is no sound output in the bluetooth function repair the set according to the following guide
- One point repair guide
- No sound
- 6 in the bluetooth function
- 6 3 service hint any picture remark
- 6 2 how to troubleshoot countermeasure
- 6 1 solution
- 1 2 how to troubleshoot countermeasure
- 1 1 solution
- One point repair guide
- Audio signal output is small or not when you power on the middle power mini system
- Audio output is small or no audio output
- 1 ic700 ic705
- 1 3 service hint any picture remark
- No power on standby led is blinking
- One point repair guide
- It doesn t turn on and blinks standby led red
- 1 amp fets
- 1 3 service hint any picture remark
- 1 2 how to troubleshoot countermeasure
- 1 1 solution
- Speaker no audio
- 1 amp ic
- 1 3 service hint any picture remark
- 1 2 how to troubleshoot countermeasure
- 1 1 solution
- One point repair guide
- Power supply on smps board
- Electrical troubleshooting guide
- Electrical troubleshooting guide
- Electrical troubleshooting guide
- Electrical troubleshooting guide
- System part
- Electrical troubleshooting guide
- No audio part
- Electrical troubleshooting guide
- Electrical troubleshooting guide
- Electrical troubleshooting guide
- Electrical troubleshooting guide
- Electrical troubleshooting guide
- Electrical troubleshooting guide
- No lighting woofer speaker
- Waveforms of major check point
- Waveform of servo
- Figure 1 1 cd 16m ic407 pin31 figure 1 2 servo fe te fod rf ic407 pin61 62 63 ic408 pin1
- Waveform of motor drive
- Waveform of audio signal
- Waveform of adc 5 waveform of usb
- Waveform of vfd grid current driver
- Waveform of crystal 7
- Wiring diagram
- P 1 5mm
- Mic portable
- Block diagrams
- Front 385w x 2 surr 385w x 2 woofer 385w x 2
- Vfd dig301
- Dac ic az4580
- Tas5548 pwm
- Cs5346
- S4308 mic
- Am5890 motor drive
- Portable
- Mlc3730 mcs logic
- Micom r5f100geafb
- Mbyte serial flash
- Mbit sdram
- Main system block diagram
- Lc78615erf servo
- Ir receiver
- Fet irf6775 x 12ea
- Eeprom
- Driver irs2092 x 4ea
- Volume key
- Deck mechanism
- Main power block diagram
- Smps power 1 circuit diagram
- Circuit diagrams
- 49 3 50
- Smps power 2 circuit diagram
- 51 3 52
- Main cd dsp circuit diagram
- 53 3 54
- Main rf servo circuit diagram
- 55 3 56
- Main adc pwm circuit diagram
- 57 3 58
- Main amp circuit diagram
- 59 3 60
- 61 3 62
- Front volume circuit diagram
- Mic portable circuit diagram
- 63 3 64
- Front speaker main circuit diagram
- 65 3 66
- 67 3 68
- Front speaker sub circuit diagram
- Woofer speaker main circuit diagram
- 69 3 70
- Woofer speaker sub circuit diagram
- 71 3 72
- Connectors 2 capacitors
- Circuit voltage chart
- 73 3 74
- Smps p c board
- Printed circuit board diagrams
- Top view
- Top view
- Main p c board
- Bottom view
- Main p c board
- Front volume p c board
- Woofer speaker sub p c board
- Woofer speaker main p c board
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Узнайте, как устранить проблему отсутствия звука в AUX функции. Следуйте пошаговому руководству по диагностике и замене компонентов для восстановления звука.