TX-28PG45 - Panasonic TV Service Manual (repair manual). Page 4

1. Receive 

a 

Greyscale 

signal.

2.  Set the controls :-

Brightness

Minimum

Contrast

Minimum

Volume

Minimum

1.  Set the +B voltage up as follows:-

Adjust R811 so that B2 shows 148V±1V.

2.  Confirm the following voltages.

5

±

0,25V B10

5

±

0,25V

12

±

0,5V

33

±

1,5V

15

±

1V

8

±

0,5V

B12 26

±

2V

6

±

1V

36

±

1,5V

13

±

1V

205

±

10V

14

±

1V

1. Receive 

a 

Greyscale 

signal.

2.  Degauss the tube externally.
3.  Set the TV into Service Mode 1.
4.  Select Cut off mode.

To adjust Cutoff connect an oscilloscope to the Blue
cathode. Press "STR" and adjust "cutoff" value using the
"Yellow" and "Blue" buttons until the black level is 160V±5V,
press "STR" to store the value. Remove the oscilloscope.
Select Ug2 adjustment and adjust the screen VR until the
display shows "O.K."

Self-check is used to automatically check the bus lines and hexadecimal code of the TV set. To get in to Self-Check mode
press the down (-/v) button on the customer controls at the front of the TV set, at the same time pressing the STATUS button
on the remote control.

If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".

 To exit Self Check, switch off the TV set at the power button.