Panasonic PT-EZ770Z Service Manual page 41

SECTION 1 SERVICE INFORMATION
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Confirm that the short circuit between pins (4) and (3) of connec-
P
tor [K9201] (DC 18V is observed in normal)
Confirm the voltages between pins of connector [B1] below;
B (1) - (3) DC 380V
(4) - (3) DC 18V
B Confirm the fuse [F9602]
Confirm the short circuit of Q9611, Q9612, Q9615, Q9602,
B
Q9603
B Replace [B] P.C.Board
OK
OK
OK
OK
NG
P Check or replace [P] P.C.Board
NG
B Check or replace [B] P.C.Board
NG
B Replace fuse
NG
B Replace the shorted parts
INF-33