Panasonic TC-P42S1, TC-P50S1, TC-P46S1, TC-P42X1 manual SD Board Isolation, To isolate the SD board

Models: TC-P42X1 TC-P46S1 TC-P50S1 TC-P42S1 TC-P50X1

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SD Board Isolation

SD Board Isolation

The 2008 and 2009 plasma models are now designed not to turn-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.

Unplugging 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 a high is output to connector SC20 triggering shutdown.

To isolate the SD board:

Remove the 2 VF_GND screws on the SD board only.

Unplug connector SC46 and SC42 on the SC board and SU11 on SU board.

Place a jumper between pins 1 and 2 of the empty connector SC50.

Note: This procedure could be useful when troubleshooting 7 blinks problems.

Slide #65

Page 65
Image 65
Panasonic TC-P42S1, TC-P50S1, TC-P46S1, TC-P42X1, TC-P50X1 manual SD Board Isolation, To isolate the SD board