Pioneer PDP-434PC, PDP-504PC, PDP-434PE, PDP-504PE, PDP-434PG Repair tips

...

Pioneer Plasma

Scan Board & IC Troubleshooting

Scan IC Removal & Reinstallation Guide

Technical Training Department 1925 E. Dominguez Street Long Beach, CA 90810

Contents

Topic Page

Checking drives and Scan IC’s

Removing and reinstalling scan IC’s using nozzle type soldering station

Removing and reinstalling scan IC’s using Chipquick

Removing blue glue from scan IC’s

4~5

8~10

Blue glue model list 11

Checking drives and scan ICs



Use static precautions. Do not operate with any connectors unplugged.

Replacing scan ICs in home is NOT recommended.



If scan board is disconnected, be sure to isolate buss bar also. Discharge all scan board 

connections including buss before reconnecting.

 Unplug power connector from X or Y drive. Perform diode check with DVM from Vsus to ground.  Should check as a diode. If Y drive shorted, next unplug Scan PCBs. If short goes away, check 

Scan ICs. If still shorted, replace drive.

 With Scan PCB unplugged, perform diode check from Vh to Psus (buss bar). Should check as a 

diode. If shorted, check resistance from Vh and Gndh (buss bar) to HVxxx (each IC has 2 test 

pads). Should measure 3 to 5 meg ohm (varies by DVM). Remove IC (see SK-D04003) that 

measures different from others and recheck. If all check the same, but Vh is still shorted, you 

must check all 64 HV pins of each IC. Remove side rail and 32 feed throughs are accessible near 

the panel connection. If nothing shows up, loosen Scan PCB and flip over to access all 64 

connections.

Psus, Gndh

HVxxx

+ 8 hidden pages