Unplug the AC Cord.
Remove the jumper wire between TP810 and TP805 on the Power P.C.B.
Reconnect all connector cables, then reinstall the Power P.C.B. into the unit.
Still NG
OK
NG
OK
Plug in the AC Cord.
Check the voltage at the following points.
Between Pin 1 and Pin 2 of CN851: approx. +120 V
Check the parts (Ref No. 800
series) on the Power P.C.B. and
replace any defective parts.
Plug in the AC Cord and turn the power ON.
Does the Lamp light up?
There is no problem with the Power P.C.B., however,
the other P.C.B.s are defective.
Check the Main P.C.B. and the Rear Jack P.C.B.,
and repair if necessary.
Refer to "CHECKING THE OPT/TV UNIT."
Replace the Lamp Unit.
There is no problem with the Power P.C.B.
NG
A
PT-56LCX70 / PT-61LCX70 / PT-50LCX7 / PT-56LCX7 / PT-61LCX7
22
