3-21
%WB5;5
%WB7;5
%WB5765
%WB&765
< Signal check point >
ONE POINT REPAIR GUIDE
NO SOUND
There is no sound output in the BLUETOOTH FUNCTION, repair the set according to
the following guide.
6-7. IN THE BLUETOOTH FUNCTION
6-7-1. Solution
Please check and replace IC501 on MAIN board and Bluetooth module on front panel.
6-7-2. How to troubleshoot (Countermeasure)
1) Check BT_RX, BT_TX signal to Pin5, 7 of CN504.
If no signal, check the signal to Pin5, 7 and Pin1(+3.3 V) of on the Bluetooth module and cable connection state.
If there are no signal out from module, replace new module.
2) Check if BT_RX/TX is entered from Pin5, 7 of CN504 to Pin169, 170 to IC501 (DSP).
3) Check if MIC_BCK, MIC_MLCK & MIC_O_DATA is entered from IC501 to IC600.
If no signal, check VCC12(+1.2 V) for IC501. If it is abnormal, change 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. If the signals are abnormal, replace it a new one.
5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide.
If AMP is damaged, replace it with a new one.
6-7-3. Service hint (Any picture / Remark)
IC501
MLC3700
IC600
TAS5548
PWM
DAC_BCK
DAC_LRCK
DAC_DATA
IR AMP
IRF6775
B/T Module
BT_RX,
BT_TX
< BLUETOOTH function signal
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ow >
Summary of Contents for CM9530
Page 11: ...MEMO 1 10 ...
Page 13: ...MEMO 2 2 ...
Page 17: ...A60 A61A 651 652 653 653 4 SPEAKER SECTION 4 1 FRONT SPEAKER NS9530F ...
Page 18: ...A91A 951 952 953 953 A90L 4 2 SUBWOOFER SPEAKER NS9530W LEFT SUBWOOFER ...
Page 19: ...2 10 A91A 951 952 953 953 A90R SUBWOOFER SPEAKER NS9530W RIGHT SUBWOOFER ...
Page 78: ...3 79 3 80 PRINTED CIRCUIT BOARD DIAGRAMS 1 SMPS P C BOARD TOP VIEW ...
Page 80: ...3 83 3 84 2 MAIN P C BOARD TOP VIEW ...
Page 81: ...3 85 3 86 MAIN P C BOARD BOTTOM VIEW ...
Page 82: ...3 87 3 88 3 VOLUME P C BOARD TOP VIEW ...
Page 83: ...3 89 3 90 VOLUME P C BOARD BOTTOM VIEW ...
Page 84: ...3 91 3 92 4 VFD P C BOARD TOP VIEW BOTTOM VIEW ...
Page 85: ...3 93 3 94 5 MIC P C BOARD TOP VIEW BOTTOM VIEW 6 PORTABLE P C BOARD TOP VIEW BOTTOM VIEW ...