PT-VW350, PT-VW350D, PT-VW350T, PT-VX420, PT-VX420D, PT-VX420T, PT-VX421 (serv.man4) - Panasonic Projector Service Manual (repair manual). Page 29

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INF-19
SECTION 1 SERVICE INFORMATION
5. 2. Troubleshooting
* The letters in the left of inspection items indicate the P.C. Boards related to their respective descriptions.
* Please check items with the interlock switch on. 
■ Power does not turn ON. ([ON(G)/STANDBY(R)] LED does not light in red)
Check the connection of each connector
 
AC inlet, K6B - K602, K6R -  K8R
NG
Connect the cables properly
A
Disconnect the connectors [K8R]. Check the short circuit 
between pins (5)-(6), (10)-(11) of connector [K8R].
NG
A
Replace the [A] P.C.Board
P
Check and replace the [P] P.C.Board
OK
OK
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