Panasonic TC-P50S1 User Manual
Slide #63
SU and SD Boards Isolation Procedure
To isolate the SU and SD boards at the same time is not necessary to remove the
boards:
boards:
•
Remove the 4 VF_GND screws (2 on the SU board and 2 on the SD board).
•
Unplug connectors SC41, SC46, and SC42 on the SC board.
•
Place a jumper between pins 1 and 2 of the empty connector SC50.
When this is done, the display is completely black (No picture)
Note: This procedure could be useful when troubleshooting 7 blinks problems.
Beginning last year (2008), the new plasma models are now designed not to turn-
on if either the SU or SD board is disconnected.
on if either the SU or SD board is disconnected.
Disconnecting either causes the unit to shutdown and the power LED to blink 7
times.
times.
Unplugging any of the connectors SC41/SU41, SU11/SD11, and
SC42/SD42, opens the interlocked connection between VF_GND and CHA on the
SC board. This floats point “CHA” and Q16471 turns on. IC16561 outputs a high to
pin 21 of connector SC20 triggering shutdown.
SC42/SD42, opens the interlocked connection between VF_GND and CHA on the
SC board. This floats point “CHA” and Q16471 turns on. IC16561 outputs a high to
pin 21 of connector SC20 triggering shutdown.