Samsung TB531VCT1X/XSA Service Manual page 121

Troubleshooting
6-27 Audio Signal Missing in Play Mode
10 pin : PB Audio Signal
11 pin : PB audio signal
6-20
Check ICM301
78 pin 5V
Yes
Check
ICM301 63, 64 pin
(I2C LCK DATA)
Yes
Check ICM301
(Small Signal)
Yes
Check ICM301
(Small Signal)
Check ICM301
77 pin : PB Audio
Signal
Check
CNM001 8 pin
PB Audio signal
No
Check PC 5V Line
No
Check VCR MICOM
(ICM601-99, 100 pin)
Check A/C Head and PB EQ
No
Block (AUDIO HEAD A2 (MUTH)
No
Check CM588
No
Replace ICM301
No
Replace CNM001
Samsung Electronics