3-16
ONE POINT REPAIR GUIDE
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)
< MAIN board top view >
IC700
IC700
IC802
IC802
IC801
IC801
IC800
IC800
IC702
IC702
IC701
IC701
Summary of Contents for CJ87
Page 17: ...1 16 ...
Page 19: ...2 2 ...
Page 21: ...2 6 2 5 ...
Page 23: ...2 8 A60 3 SPEAKER SECTION FRONT SPEAKER ...
Page 69: ...3 40 ...
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 ...
Page 79: ...3 59 3 60 4 JACK P C BOARD DIAGRAM TOP VIEW BOTTOM VIEW ...