Read Panasonic TH-42PW4 / TH-42PWD4 Service Manual online
6.1. +B Set-up
6.1.1. Item / Preparation
1. Input a Grey scale signal.
2. Set the picture controls: -
Picture mode: Normal
White balance: Normal
6.1.2. Adjustments
Adjust and confirm indicated test point for the specified voltage.
Adjust
Test point
Voltage
Volume
Name
P4 pin 1 (Hot)
400V ±1V
R426 (P1)
Except US
PFC
P1 pin 3
170V ±1V
R476 (P) US model Vsus
R625 (P3)
Expect US
R625 (P3)
Expect US
P2 pin 3
160V ±1V
R505 (P) US model Vbk
R498 (P1)
Except US
R498 (P1)
Except US
P12 pin 1
67V ±0.5V
R473 (P) US model Vda
R519 (P1)
Except US
R519 (P1)
Except US
Confirm
Test point
Voltage
Volume
Name
P23 pin 2
15V ±0.5V
+15V
P5 pin 1
13.5V ±0.5V
+13V
P13 pin 1
13.5V ±0.5V
Audio 15V
P13 pin 3
-13.5V ±0.5V
Audio -15V
P5 pin 5
5.1V ±0.3V
5V
P7 pin4
5V ±0.2V
STB5V (1)
P14 pin 8
5.0V ±0.3V
STB5V (2)
P10 pin 1
17.0V ±0.5V
FAN +B
P10 pin 4
5.1V ±0.3V
FAN 5V
6.2. Driver Set-up
6.2.1. Item / Preparation
1. Input an APL 100 % white signal.
2. Set the picture controls: -
Picture mode: Normal
White balance: Cool
Aspect: 16:9
6.2.2. Adjustments
Adjust driver section voltages referring the panel data on the
panel data label.
panel data label.
Test point
Voltage
Volume
Name
TPVSUS
(SS-BOARD)
(SS-BOARD)
Vsus ±1V*
R478 (P) US model
Vsus
R625 (P3)
Except US
Except US
TPVBK
(SC-BOARD)
(SC-BOARD)
Vbk ±1V*
R505 (P) US model
Vbk
R498 (P1)
Except US
Except US
TPVE
(SS-BOARD)
(SS-BOARD)
Ve ± 1V*
R6774 (SS)
Ve
TPVSET
(SC-BOARD)
(SC-BOARD)
218 V ±6V
---
Vset
TPVAD
(SC-BOARD)
(SC-BOARD)
Vad ±1V*
R6477 (SC)
Vad
TPVDA
(SC-BOARD)
(SC-BOARD)
67V±1V
R473 (P) US model
Vda
R519 (P1)
Except US
Except US
*See the Panel label.
6 Adjustment Procedure
9
TH-42PW4 / TH-42PWD4
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