TX-43P15X, TX-43P15H, TX-43P15HQ, TX-43P15HZ, TX-51P15X, TX-51P15H, TX-51P15HQ, TX-51P15HZ (serv.man2) - Panasonic TV Service Manual (repair manual). Page 16

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+B Voltage Confirmation
1. Operate the set.
2. Set controls:

Bright..........................minimum
Contrast......................minimum
Volume........................minimum

1. Pin 1 of connector P13 on P-Board        : 140.0 ± 2.0V
2. Pin 1 of connector P12 on P-Board        :   15.0 ± 2.0V
3. Pin 5 of connector P11 on P-Board        :     9.0 ± 2.0V
4. Pin 1 of connector P15 on P-Board        :   21.0 ± 2.0V
5. Pin 6 of connector P15 on P-Board        :  -21.0 ± 2.0V
6. Pin 1 of connector P11 on P-Board        :   32.0 ± 2.0V
7. Pin 6 of connector P13 on P-Board        :   10.0 ± 2.0V

High Voltage
1. Remove Red CRT anode lead from Distributor by grasping

anode lead protective cap top and squeeze it against the
locking cap body under the protective cap.
Rotate 1/4 turn and pull anode lead sleeve out of distribu-
tor connector. Discharge anode lead to CRT metal chas-
sis.

1. Receive a Black Signal.
2. Confirm that high voltage is 31.5 ± 1.0kV.

High Voltage Correct
1. Connect DC voltmeter to TPX3(+) and TPX4(GND) on X-

Board.

2. BRIGHT : 0          CONTRAST : 0
3. Receive a Black signal.

1. Set the data of Market mode CHK4 is as follows:

H-CORRECT : 7
V-CORRECT : 9

2. Adjust R1501 (X-Board) so that the value of DC volt- meter

become 6.1 ± 0.2V.

RF AGC (Main picture) (Market mode CHK2)
1. Receive a colour bar pattern.
2. Set the input level to 62dB (+1/-2dB)

(75

 opened)

3. Connect an oscilloscope to TPA12 with DC mode.

1. Set the TV to Market mode [CHK2].
2. Adjust RF AGC Control so that the voltage at TPA12

becomes 6.2 ± 0.5V.

3. Increase the input level by 2dB and confirm that the volt-

age changes.

RF AGC 2 (Sub picture) 
1. Receive a colour bar pattern.
2. Set the input level to 70dB (+1/-2dB)

(75

 opened)

3. Connect an oscilloscope to TPA20 with DC mode.

1. Adjust TNR002 so that the

voltage at TPA8 becomes
6.2 ± 0.5V.

2. Increase the input level by

2dB and confirm that the
voltage changes.

Sub Contrast (Market mode CHK3)
1. Receive a colour bar pattern.
2. Connect an oscilloscope to TPA41 (A-Board).
3. Connect a short jumper between TPD6 and D29 (D-

Board).

4. Set controls:

Picture menu..........DYNAMIC NORMAL
AI............................OFF

1. Adjust Sub Bright Control.

2. Adjust Sub Contrast Control.

Adjust

TNR002

(Top View)

100% white

Black level

DC=0V

b

a