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ADJUSTMENT PROCEDURE
Item / Preparation
+B SET-UP
1.
Receive a Greyscale signal.
2.
Set the controls :-
Brightness
Minimum
Contrast
Minimum
Volume
Minimum
CUT OFF / Ug2 Test
1.
Receive a Greyscale signal.
2.
Degauss the tube externally.
3.
Set the TV into Service Mode 1.
4.
Select Cut off mode.
FACTORY SETTINGS
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.
To exit Self Check, switch off the TV set at the power button.
If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".
TUN1
MEM
O.K.
TUN2
GC1
O.K.
DAC1
GC2
-- --
MSP
VDU
O.K.
DOLBY
CIP
O.K.
CODEC
RGB
O.K.
DAC2
AVSW
O.K.
DAC3
TX- 28PG45
OPTION1
0D
OPTION2
00
OPTION3
10
OPTION4
10
OPTION5
00
OPTION6
50
OPTION7
00
4
Adjustments
1.
Set the +B voltage up as follows:-
Adjust R811 so that B2 shows 148V±1V.
2.
Confirm the following voltages.
B9
5
± 0,25V B10
B5
12
± 0,5V
B4
15
± 1V
B12 26
± 2V
B3
36
± 1,5V
B1
205
± 10V
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."
O.K.
-- --
O.K.
O.K.
O.K.
O.K.
O.K.
O.K.
OPTION8
41
OPTION9
81
OPTION10
80
OPTION11
1B
OPTION12
28
OPTION13
FA
CHECK
FC
5
± 0,25V
B11
33
± 1,5V
B7
8
± 0,5V
B8
6
± 1V
B13
13
± 1V
B14
14
± 1V
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