Panasonic TX-LR42U20 Service Manual ▷ View online
TX-LR42U20
13
6.2.
Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality occurs, the protection circuit will operate and reset the unit to stand by mode. During this time, the
defective block can be identified by the number of blinking times of the Power LED on the front panel of the unit as follow:
defective block can be identified by the number of blinking times of the Power LED on the front panel of the unit as follow:
6.3.
No Power
First check point
There are following 2 states of No Power indication by power LED.
There are following 2 states of No Power indication by power LED.
1. No lit
2. Red is lit then turns red blinking a few seconds later. (See 6.2.)
2. Red is lit then turns red blinking a few seconds later. (See 6.2.)
Blinking times
Contents
BOARD
1
Inverter_SOS
P BOARD
2
FAN_SOS
A BOARD
3
SOS
A BOARD
4
DTV_9V
P/A BOARD
5
MAIN_9V
A BOARD
6
SUB_5V
A BOARD
7
SUB_3.3V
A BOARD
8
MAIN_3.3V
A BOARD
9
SOUND_SOS
A BOARD
10
HQ1L_SOS / ZWEI_SOS
A BOARD
13
EMERGENCY SOS
A BOARD
14
Audio PWM SOS
A BOARD
TX-LR42U20
14
7 Disassembly and Assembly Instructions
7.1.
AC Cord Dressing 1
1. Clamp plug with clamper.
2. Insert beads 3 pcs. And slide down to lower hole.
2. Insert beads 3 pcs. And slide down to lower hole.
TX-LR42U20
15
7.2.
AC Cord Dressing 2
1. Clamp plug with clamper.
2. Insert beads 3 pcs. And slide down to lower hole.
3. Stick the FILAMENT TAPE.
2. Insert beads 3 pcs. And slide down to lower hole.
3. Stick the FILAMENT TAPE.
TX-LR42U20
16
7.3.
AC Cord Installation
1. Put on the AC CORD BRACKET on the CABINET.
2. Fix the AC CORD BRACKET with SCREW.
3. Insert AC CORD connector into P-PCB connector.
4. Clamp the AC CORD.
5. Insert AC CORD bushing into the AC CORD BRACKET.
6. AC CORD is pushed into the bottom of the bracket.
2. Fix the AC CORD BRACKET with SCREW.
3. Insert AC CORD connector into P-PCB connector.
4. Clamp the AC CORD.
5. Insert AC CORD bushing into the AC CORD BRACKET.
6. AC CORD is pushed into the bottom of the bracket.
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