Panasonic PT-44LCX65-K, Service Manual, Page: 116 / 236

OK
OK
NG
Is the voltage between ) and TP1304(-)
approx. 19V while the Power LED (D6701) is flashing
green? Unplug the AC Cord and plug it in again.
Turn the power ON.
Replace the Ballast C.B.A.
Replace any defective parts. Check the other parts (Q1301, Q1302, IC1303, etc.)
on the Ballast P.C.B.
Replace T1301 or U1301.
(If still NG, even after replacement of T1301 and U1301,
replace the Ballast C.B.A.
NG
NG
NG
NG
OK
OK
There is a problem on the Main C.B.A. or Base C.B.A.
Check LAMP ON(H) signal line between Pin 2 of
P3007 on the Base C.B.A. and Pin 20 of IC6003 on
the Main C.B.A., and IC6003 on the Main C.B.A.
Is the voltage between Pin 1 and Pin 4 of P1305
approx. +5V (High) while the Power LED (D6701) is
flashing green?
There is a problem on the Main C.B.A.
Check STANDBY (L)/POWER ON (H) signal line
between Pin 1 of P3007 on the Base C.B.A. and
Pin 21 of IC6003 on the Main C.B.A., and IC6003 on
the Main C.B.A.
Is the signal (LAMP ON(H)) between Pin 2 and Pin 4 of
P1305 correct while the Power LED (D6701) is flashing
green?
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 at a
resistance of approx. 100 /5 W for about
3 seconds.
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 at a
resistance of approx. 100 /5 W for about
3 seconds.
Ballast C.B.A. Service Position
B
C
C
<Waveform between Pin2 and Pin4 of P1305>
PT-44LCX65-K / PT-52LCX65-K / PT-61LCX65-K
116