Panasonic PT-60LCX64-K Service Manual page 133

<Service Position (4)>
Plug in the AC Cord and turn the power ON.
Is there a slight crackle sound from the Ballast P.C.B.
after approx. 5 seconds?
OK
After the Lamp Error (Error No. 5)) is indicated (the
Lamp LED flashes once), unplug the AC Cord and
connect the Lamp Connector to the Lamp.
CAUTION:
Do not touch any parts for at least 5 minutes
after disconnecting AC plug to reduce the risk
of electric shock.
Before checking parts, confirm that the voltage
between TP1301 and TP1302 is 0 V.
If not, discharge TP1301 and TP1302 by
resistance (approx. 100 /5 W) for about
3 seconds.
Plug in the AC Cord again and turn the power ON.
Does the Lamp light up?
OK
There is no problem with the Ballast C.B.A.
After discharging the voltage between TP1301(+) and
TP1302(-), reinstall the Shield Case (the Ballast Hold
Plate, the Ballast Shield Case Top, and the Ballast
Shield Case Bottom) of the Ballast C.B.A.
CAUTION:
Do not touch any parts for at least 5 minutes
after disconnecting AC plug to reduce the risk
of electric shock.
Before checking parts, confirm that the voltage
between TP1301 and TP1302 is 0 V.
If not, discharge TP1301 and TP1302 by
resistance (approx. 100 /5 W) for about
3 seconds.
A
Unplug the AC Cord and then, plug in the AC Cord
NG
again. And turn the power ON.
Check the voltage at the following points during
flashing the Power LED (D6701) green.
P1301-Pin 1(+) <--> TP1304(-):
P1301-Pin 4(+) <--> P1301-Pin 5(-): Approx. 17V
NG
Check the Power C.B.A.
(Refer to "CHECKING THE POWER C.B.A.")
NG
Replace U1301.
(If still NG even after replacement of U1301,
replace the Ballast C.B.A.)
CAUTION:
Do not touch any parts for at least 5 minutes
after disconnecting AC plug to reduce the risk
of electric shock.
Before checking parts, confirm that the voltage
between TP1301 and TP1302 is 0 V.
If not, discharge TP1301 and TP1302 by
resistance (approx. 100 /5 W) for about
3 seconds.
133
C
OK
B
Approx. 19V
PT-60LCX64-K