HITACHI 42PD5000
Instrukcja Serwisowa

32PD5000/42PD5000 (PW1)

Troubleshooting (POWER)
Power cannot be turned on (LED does not light)

Is the input voltage applied to Power supply unit? (CN61 , ) Yes

No

AC inlet

Power switch

AC Fuse F901 T6.3AH 250V

Filter PWB

Are the voltages applied to CN63 pins and CNPPS pins of Power supply unit ? Yes Joint / Formatter PWB

No [CN63] +5V +3.3V [CNPPS] +30V + 5V +12V +10V

Power supply unit

Picture is displayed. But no sound

Check Speaker terminal and Speaker cord. Locked

Unlocked Check No sound

Are the voltages applied to EAJ1 pins of the Audio PWB? Yes + 5V +12V GND

No Are the voltage applied to EAJ1 pins? (When EAJ1 is disconnected.) Yes Audio PWB Formatter PWB or Video PWB No

No

Are the signals applied to EAF1 pins of the Audio PWB?

No

Power supply unit

Yes

L ch R ch GND

Are there signals on Speaker Terminals? Yes

Audio PWB Speaker

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