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6. POWER AMP PART CHECK
POWER AMP PART CHECK
Refer to SMPS troubleshooting.
NO
Check
CN105 Pin6: +12 V
Pin14,15: 26 V.
YES
YES
Check IC701, IC702
Pin29, 30, 31, 36, 37, 38 input voltage.
YES
Check each line resistor output voltage.
NO
Check IC701, IC702
Pin2: +12 V input.
Check IC701, IC702
Pin27, 28, 32, 35, 39, 40.
Replace the coil.
NO
Check output
line coil.
Check PWM Modulator input
IC701 Pin5, 6, 14, 15 / IC702 Pin5, 6.
YES
YES
YES
YES
OK
3-24
AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE
Содержание CM4330
Страница 13: ...1 12 MEMO ...
Страница 15: ...2 2 MEMO ...
Страница 19: ...A60 4 SPEAKER SECTION 4 1 FRONT SPEAKER CMS4330F ...
Страница 51: ...3 32 MEMO ...
Страница 66: ...3 61 3 62 2 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...
Страница 67: ...3 63 3 64 3 FRONT P C BOARD TOP VIEW BOTTOM VIEW ...