3-3
ONE POINT REPAIR GUIDE
NO POWER
If the unit doesn’t work by no ±PVDD problem, repair the set according to the follow-
ing guide.
1-2. NO AMP POWER
1-2-1. Solution
Please check and replace F911, Q905, Q906 on SMPS board.
1-2-2. How to troubleshoot (Countermeasure)
1) Check if the fuse F901 is open or short-circuit.
2) Check the Drain-Source or Drain-Gate, Gate-Source Resistance of Q905, Q906 with a digital multi-meter.
If it is short condition, it’s destroyed. Replace it with a new one.
(Please replace 2 FET at the same time although several FET is OK)
1-2-3. Service hint (Any picture / Remark)
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< F911 >
If F911 is not short-circuit,
replace it with a same speci
fi
cations one.
< Q905, Q906 >
If Q905, Q906 is short-circuit,
replace it with a new one.
Содержание CM9530
Страница 11: ...MEMO 1 10 ...
Страница 13: ...MEMO 2 2 ...
Страница 17: ...A60 A61A 651 652 653 653 4 SPEAKER SECTION 4 1 FRONT SPEAKER NS9530F ...
Страница 18: ...A91A 951 952 953 953 A90L 4 2 SUBWOOFER SPEAKER NS9530W LEFT SUBWOOFER ...
Страница 19: ...2 10 A91A 951 952 953 953 A90R SUBWOOFER SPEAKER NS9530W RIGHT SUBWOOFER ...
Страница 78: ...3 79 3 80 PRINTED CIRCUIT BOARD DIAGRAMS 1 SMPS P C BOARD TOP VIEW ...
Страница 80: ...3 83 3 84 2 MAIN P C BOARD TOP VIEW ...
Страница 81: ...3 85 3 86 MAIN P C BOARD BOTTOM VIEW ...
Страница 82: ...3 87 3 88 3 VOLUME P C BOARD TOP VIEW ...
Страница 83: ...3 89 3 90 VOLUME P C BOARD BOTTOM VIEW ...
Страница 84: ...3 91 3 92 4 VFD P C BOARD TOP VIEW BOTTOM VIEW ...
Страница 85: ...3 93 3 94 5 MIC P C BOARD TOP VIEW BOTTOM VIEW 6 PORTABLE P C BOARD TOP VIEW BOTTOM VIEW ...