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4.1.2. No Output
No output
Che ck MAIN P CB
AIC4 1#(5V), 6#(-5V)?
Ye s
Che ck FET1~6
(IRF6775)OK or not?
Ye s
(1)
Che ck MAIN P CB
AIC1~4(IRS 2053) input a nd
output s igna l.
Ye s
Che ck
MICOM IC(UIC1) a nd
MP EG IC(MIC1) s igna l.
Ye s
Re pla ce UIC1 or MIC1.
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*
Re fe r to wa ve pa tte rn
ima ge of Fig. 4-1, 4-2.
Che ck MAIN P CB
ES S IC P IN83/88/89.
(1)
Che ck MAIN P CB
AFIC1 input a nd
output s igna l.
*
Re fe r to wa ve pa tte rn
ima ge of Fig. 4-3.
No
4. Troubleshooting
Re pla ce S MP S .
Re pla ce FET. (IRF6775)
Re pla ce IRS 2053.
Che ck s igna l input a nd
sig na l pa tte rn or
Re pla ce MAIN P CB.
4-3
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