Audio Output Is Small Or No Audio Output - LG CJ98 Service Manual

6. AUDIO OUTPUT IS SMALL OR NO AUDIO OUTPUT

Audio signal output is small or not. when you power on the middle power mini system.
6-1. AMP IC (IC700 ~ IC702, IC800 ~ IC802)
6-1-1. Solution
Replace IC700 ~ IC702, IC800 ~ IC802 on MAIN board.
6-1-2. How to troubleshoot (Countermeasure)
1) Please check if this system is on bass blast mode.
  C, RL and RR make sound only on bass blast mode.
2) Check the IC700 ~ IC702, IC800 ~ IC802 on your eyes.
3) Check the audio signal output check(pin13 of IC700 ~ IC702, IC800 ~ IC802).
First, check the PWM data input (pin3 of IC700 ~ IC702, IC800 ~ IC802)
4) If the audio signal output has no output, try to change IC which has no output.
5) Lastly, check speaker terminal (JK700).
6-1-3. Service hint (Any picture/ Remark)
IC700 IC700
IC701 IC701
IC702 IC702
IC800 IC800
IC801 IC801
IC802 IC802
ONE POINT REPAIR GUIDE
< MAIN board top view >
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