Read Panasonic TX-PR42UT30 Service Manual online
18
7.2.
Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the
defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.
defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.
7.3.
No Power
First check point
There are following 3 states of No Power indication by power LED.
There are following 3 states of No Power indication by power LED.
1. No lit.
2. Green is lit then turns red blinking a few seconds later. (See 7.2.)
3. Only red is lit.
2. Green is lit then turns red blinking a few seconds later. (See 7.2.)
3. Only red is lit.
Blinking Times
Contents
Check point
1
Panel information SOS
PD5 Start SOS
PD5 Start SOS
-
3
P+ 3.3V SOS
A-Board
4
Power SOS
P-Board
5
P+ 5V SOS
A-Board
6
Driver SOS1
(SN Energy recovery circuit)
(A-SN FPC DET)
(SN Energy recovery circuit)
(A-SN FPC DET)
SN-Board
A-SN FPC
7
Driver SOS2
(SN Connector DET)
(SN Scan and Logic IC)
(SN Connector DET)
(SN Scan and Logic IC)
SN-Board
8
Driver SOS3
(SS FPC DET)
(SS Energy recovery circuit)
(SS FPC DET)
(SS Energy recovery circuit)
SS-Board
SS FPC
9
Discharge Control SOS
A-Board
10
Sub 5V SOS
Sub 3.3V SOS
Tuner power SOS
Sub 3.3V SOS
Tuner power SOS
A-Board
SN-Board
SS-Board
SS-Board
P-Board
12
Sound SOS
A-Board
Speaker
Speaker
13
Emergency SOS
A-Board
14
IROM SOS (ROM in Peaks IC)
A-Board
P-Board
P-Board
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