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There are currently no product reviews.
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Complete MFG Service Manual at a good price FAST !
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Downloaded the manual, reasonably straightforward, pretty much exactly as advertised.
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very helpfull
circuit diagram and sparepart list available
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Very good reproduction (copy) of original manual. Didn't have a parts list, but schematic was completely labeled with parts. Complete instructions on how to adjust mechanical functions of the 8-track deck. Well worth having and at a very reasonable cost.
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It's a full manual. All the parts are in there. I haven't found the problem yett, but I am working on it; hope I can rebuild the part myself. To make it more secure and unbreakable this time. Because the part has failed several times before and costs a lot to let it be repaired.
Thanks so much for this rich illustrated and parted manual.
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[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
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