3-19
ONE POINT REPAIR GUIDE
9. NO SOUND
There is no sound output in the AUX function, repair the set according to the following guide.
9-1. AUX FUNCTION
9-1-1. Solution
Replace IC200 on MAIN board.
9-1-2. How to troubleshoot (Countermeasure)
1) Check AUX_L/R signals to IC200(pin3, pin4).
2) Check if MCS_BCK, MCS_LRCK, & MCS_MCLK are entered from IC501 to IC200.
3) Check if ADC_DATA is entered from IC200 to IC501.
If no signal, check ADC_3.3 V & DVCC_3.3 V2 for IC200. 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.
9-1-3. Service hint (Any picture/ Remark)
< MAIN board top view >
AR201
AR201
IC200
IC200
R219
R219
R209
R209
R208
R208
MCS_MCLK to R219
MCS_MCLK to R219
AUX_L to R208
AUX_L to R208
AUX_R to R209
AUX_R to R209
MCS_LRCK to AR201
MCS_LRCK to AR201
MCS_BCK to AR201
MCS_BCK to AR201
ADC_DATA to AR201
ADC_DATA to AR201
Summary of Contents for CJ98
Page 17: ...1 16 ...
Page 19: ...2 2 ...
Page 21: ...2 6 2 5 ...
Page 23: ...2 8 A60L A60R 3 SPEAKER SECTION FRONT SPEAKER ...
Page 73: ...3 47 3 48 PRINTED CIRCUIT BOARD DIAGRAMS 1 SMPS P C BOARD DIAGRAM TOP VIEW ...
Page 75: ...3 51 3 52 2 MAIN P C BOARD DIAGRAM TOP VIEW ...
Page 76: ...3 53 3 54 MAIN P C BOARD DIAGRAM BOTTOM VIEW ...
Page 77: ...3 55 3 56 3 FRONT P C BOARD DIAGRAM TOP VIEW ...
Page 78: ...3 57 3 58 FRONT P C BOARD DIAGRAM BOTTOM VIEW ...