PIONEER PDP-50MXE20-S/LDF5
Service Manual

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� INPUT 2 (DVI)

A

Are approx. 500 mVp-p signals input to Pins 80 and 90 of IC7001? Waveform 28 Yes Is the voltage at Pin 3 of IC7003 3.3 V DC? Yes

No

Check the signal output equipment and its cables.

No

Is the voltage at Pin 1 of IC7003 5 V DC? No Is the voltage at Pin 1 of IC7006 7 V DC? No Failure in the DD Assy

Yes

Failure in the IC7003

B
Yes Failure in the IC7006

Are sync signals input to Pins 48 and 47 of IC7001? And is a CLK signal input to Pin 44 of IC7001? Waveform 29

No

Failure in the MAIN Assy

C
Yes Are sync signals input to Pins 7 and 9 of IC5603? Waveform 30 Yes Are sync signals input to Pins 11 and 13 of IC5605? Waveform 31 Yes

No

Failure in the IC5603

No

Failure in the IC5605

D
Are sync signals input to Pins 3 and 6 of IC5606? Waveform 32 Yes Failure in the MAIN Assy No Failure in the IC5606

E

F

PDP-507CMX
5 6 7 8

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