Panasonic PT-50LCZ70 - 50" Rear Projection TV, Service Manual

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DT+9V line error.
Communication error between Peaks (IC8001) and
TV microcontroller (IC6004) on the Main P.C.B.
SUB+5V line error.
MAIN+3.3V line error.
AUDIO AMP (IC4501) failure
Communication error between Peaks (IC8001) and
TV microcontroller (IC6004) on the Main P.C.B.
Problem Possible Solution
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.
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
• DDR+3.3V line
• FHD+1.2V line
The following voltage lines on the Main P.C.B. is over
voltage.
• DT+9V line
• SUB+5V line
• SUB+1.8V line
• SUB+3.3V line
• SUB+1.2V line
• DDR+3.3V line
• FHD+1.2V line
[POWER Indicator one blink]
[POWER Indicator two blinks]
[POWER Indicator three blinks]
[POWER Indicator four blinks]
[POWER Indicator six blinks]
[POWER Indicator seven blinks]
[POWER Indicator nine blinks]
POWER
Indicator
1
2
3
4
6
7
9
1. Replace the OPT/TV Unit.
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.
PT-50LCZ70 / PT-56LCZ70 / PT-61LCZ70 / PT-50LCZ7 / PT-56LCZ7 / PT-61LCZ7
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