Panasonic PT-EZ770T

INF-32
SECTION 1 SERVICE INFORMATION
6. 3. 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. ([POWER] LED does not light in red)
■ Lamp does not turn ON.
A
Check the connection of each connector
 ACinlet-K9002,K9006B,K9301-A15,K9302-A17
NG
A Connect the cables properly
ConrmtheconnectionofeachconnectoronA-P.CBoard
and lamp.
Conrmthelampxingscrews.
NG
Connect the cables properly
A
Disconnect the connectors [A15], [A17]. Check the
short circuit between pins (5)-(8), (10)-(8), (14)-(15) of
connector [A15], and pins (2)-(5) of connector [A17].
NG
A Replacethe[A]P.C.Board
Conrmthelampcondition
NG
Replacethelamp
Is each thermal sensor operating in normal?
NG
Check each thermal sensor and connection
A
Confirm that the short circuit between pins (1) and (3) of connec-
tor[K9201](DC380Visobservedinnormal)
NG
A Check or replace [P] P.C.Board
Is each fan rotating when the projector turns on?
NG
Check each fan and connection
A
Confirm that the voltage at pin (4) of connector [A25] changes
from Low to Hi when the power is ON.
NG
A Check or replace [A] P.C.Board
A
Confirm that the voltage at pin (2) of connector [A15] changes
from Low to Hi when the power is ON.
NG
A Check or replace [A] P.C.Board
P Check and replace the [P] P.C.Board
Next page
OK
OK
OK
OK
OK
OK
OK
OK
OK