Wednesday, September 18, 2013

HOW TO DISASSEMBLE - PIONEER PDP-4280X - PLASMA DISPLAY


DISASSEMBLY
Function button panel.
Remove the two screws.
Remove the function button panel.
Side input cover
Remove the two screws.
Remove the side input cover.
Power button holder
Remove the two screws.

Remove the power button holder.
REAR CASE REMOVAL
Remove the two protect sheets C.
Remove the 23 screws. (AMZ30P060FTB)
Remove the nine screws. (TBZ40P080FTB)
Remove the four screws. (ABA1332)
Remove the four screws. (BBZ40P160FTB)
Remove the one screw. (ABA1341)
Remove the rear case (428).
When assembling the Rear Case (428), tighten the screws in the following sequence:
Tighten the screw (3-1).
Tighten the two screws (3-2).
Tighten other screws.
PCB ASS'Ys
Side I/O Assy
Remove the four screws.
Remove the two screws.
Remove the three screws.
Remove the side input panel.
42X Drve Assy.
Remove the two screws.
Remove the side input shield with PCB.
Diagnose the 42 X DRIVE Assy.
42Y Drive Assy
Remove the two screws
Remove the function button shield with PCB
Diagnose the 42 Y DRIVE Assy.
CLICK ON THE PICTURES TO ZOOM
How to remove the bridge connector connecting between the MAIN and TANSHI Assy’s
Grip the two short edges of the connector with long nose pliers.
Insert a finger between the long nose pliers and the board to protect the board and the mounted  parts on the board from accidental damage by  the pliers then, using your finger as a fulcrum and  the pliers as a lever, pry the connector upward to remove it.
TERMINAL PANEL-B
Remove the 12 screws.
Remove the 10 screws.
Remove the three screws.
Remove the terminal panel B.
The wiring shown in the photo is different from the actual wiring, because the product in the photo is a prototype. Upon servicing, be sure to restore the original wiring of the unit after repair work.
FRONT CASE ASS'Y
Remove the one screw.
Remove the two screws.
Pull the lower part of the Front case Assy toward you and out.
Remove the Front case Assy, by pulling it upward.
ACCESS TO DIGITAL ASSY
Remove the six screws.
Remove the four screws.
Lift the Multi base section to the direction of the arrow.
SPEAKER BOX ASS'Y  LEFT & RIGHT
LEFT
Remove the six screws.
Remove the four screws.
Lift the Multi base section to the direction of the arrow.
RIGHT
Remove the one screw.
Remove the switch holder (428).
Disconnect cables, connectors, as required.
Remove the two screws.
Remove the one screw.
Remove the one screw.
Remove the speaker box Assy R.
EXCHANGE OF SCAN IC
Loosen the jumper wire.
Remove the 42RLS&IR Assy by removing the one nylon rivet.
Remove the two screws.
Remove the locking wire saddle.
Unhook the six hooks.
Remove the panel holders V1 (427) and V2 (427).
Remove the three screws.
Remove the two screws.
Remove the front chassis VL (427)