Panasonic TH-47LF30W Service Manual ▷ View online
TH-47LF30W
17
7 Troubleshooting Guide
7.1.
Self Check
7.1.1.
Display Indication
1. Self-check is used to automatically check the bus line
controlled circuit of the LCD display.
2. To get into the Self-check mode, press the volume down
button on the customer controls at the bottom of the set,
at the same time pressing the OFF-TIMER button on the
remote control, and the screen will show.
at the same time pressing the OFF-TIMER button on the
remote control, and the screen will show.
Method A Self-check only (A shipment setup is not carried
out).
out).
• Select the ID mode by Up/Down button on the remote
control at the front page of CAT mode and then press the
Mute button on the remote control more than 3 seconds.
Mute button on the remote control more than 3 seconds.
Method B Self-check+Shipment setup
• Press and hold the button on the Upper Control Panel
and press the OFF-TIMER button.
If the IIC ports have been checked and found to be incorrect Or
not located then “ - - ” will appear in place of “ OK ”
“ 01 ” in the line of the “ PTCT ” means the number of blinks of
the Power LED is 1. (Reference to 7.1.2)
“ H09 ” in the line of the “ PTCT ” is the error code.
not located then “ - - ” will appear in place of “ OK ”
“ 01 ” in the line of the “ PTCT ” means the number of blinks of
the Power LED is 1. (Reference to 7.1.2)
“ H09 ” in the line of the “ PTCT ” is the error code.
To exit the CAT mode switch off the main power.
Note:
The line of the “ PTCT ” displays when you get into the
Selfcheck mode for the first time only after the Power LED
blinks.
Selfcheck mode for the first time only after the Power LED
blinks.
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7.1.2.
Power LED Blinking timing chart
1. Subject
Information of LED Blinking timing chart.
2. Contents
When an abnormality has occurred to the unit, the protection circuit operates and resets 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.
the defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.
* Refer to 7.1.1 Display Indication
About blinking LED
Blinking times
Contents & Check point
Check point
2
(PTCT 02 H09)*
A-Board
POWER SOS
4
(PTCT 04 H09)*
A-Board
PANEL 12V SOS
P-Board
10
(PTCT 0A H09)*
DS-Board
DS_SOS
13
(PTCT 0D H09)*
A-Board
REGULATOR SOS
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7.2.
No Power
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.
3. Only red is lit.
2. Green is lit then turns red blinking a few seconds later.
3. Only red is lit.
7.3.
No Picture
TH-47LF30W
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8 Disassembly and Assembly Instructions
8.1.
PCB Layout
8.2.
Flowchart for disassembly
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