Panasonic PT-56LCX70 Service Manual page 26

PT-56LCX70 / PT-61LCX70 / PT-50LCX7 / PT-56LCX7 / PT-61LCX7
How to solve problems indicated by the Error Indication
(The symptom of all errors is that the Lamp goes off)
Note: Before performing troubleshooting, confirm that all connector cables in the unit are connected correctly.
POWER
Indicator
[POWER Indicator one blink]
1
The following voltage lines on the Main P.C.B. is over
current.
• SUB+5V line
• SUB+1.8V line
• SUB+3.3V line
• SUB+1.2V line
The following voltage lines on the Main P.C.B. is over
voltage.
• SUB+5V line
• SUB+1.8V line
• SUB+3.3V line
• SUB+1.2V line
2
[POWER Indicator two blinks]
DT+9V line error.
3
[POWER Indicator three blinks]
SUB+5V line error.
[POWER Indicator four blinks]
4
MAIN+3.3V line error.
[POWER Indicator six blinks]
6
AUDIO AMP (IC4501) failure
[POWER Indicator seven blinks]
7
Communication error between Peaks (IC8001) and
TV microcontroller (IC6004) on the Main P.C.B.
9
[POWER Indicator nine blinks]
Communication error between Peaks (IC8001) and
TV microcontroller (IC6004) on the Main P.C.B.
10 [POWER Indicator ten blinks]
LCD+17V line error.
Problem
1. Replace the Power P.C.B.
2. If still NG, replace the OPT/TV Unit.
1. Check that Connector CN1102 (Thermal Fuse) on the Main P.C.B. is connected firmly.
2. If still NG, replace the Power P.C.B.
3. If still NG, replace the OPT/TV Unit.
1. Replace the OPT/TV Unit.
1. Replace the Power P.C.B.
2. If still NG, replace the OPT/TV Unit.
Possible Solution
26