PIONEER PDP-5020FD/KUCXC
Manual de Servicio

5

6

7

8

[4] DIGITAL ASSY
Flowchart of Failure Analysis for The DIGITAL Assy
Failure analysis for the DIGITAL Assy => DG1

A

The on-screen display (OSD) is not properly indicated.

� If the OSD is not properly displayed although the panel mask is properly displayed, a failure exists in the path from the output of IC2801 on the MAIN Assy to IC3301 on the DIGITAL Assy. -> If only the OSD is abnormal, the MAIN Assy is in failure.

Disconnect and reconnect the 50P (J212) FFC/40P (J211) FFC. NG Replace the 50P (J212) FFC/ 40P (J211) FFC. NG Is an appropriate signal input? (Check the V frequency with the QSI command.) No Is the sync signal properly output from the MAIN Assy? No
� It is most likely that the video signal and sync signal data are abnormal.

B

Yes
� If no vertical sync signal is input to the DIGITAL Assy, a freeze-frame picture will be displayed.

No

Replace the DIGITAL Assy. NG OK

C

Replace the MAIN Assy.

Failure in connectors CN3201 or CN3202 on the DIGITAL Assy. Failure in ASIC (IC3301) on the DIGITAL Assy.
D

E

F

PDP-5020FD
5 6 7 8

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