6
ADJUSTMENT PROCEDURE
Item/Preparation
Adjustments
Supply Voltage Check
1.
Receive a Greyscale pattern
2.
Set the controls:
Brightness minimum
Contrast
minimum
Volume
minimum
1.
Confirm the following voltages.
E PCB
D PCB
U5B
5
_
0.5V
U5A
5.1
+0.12/-0.1V
U8A
8
_
0.5V
U5SB
5
_
0.25V
U9
9
_
0.5V
U15
15
_
0.7V
U12
11.8
_
0.5V
U16
16.1 _
0.8V
U22
22.5 _
1V
U38
19
_
1V
U47
47.5 _
2.5V
U150
150
_
1V
U200
204
_
10V
SELF CHECK
Self check is used to automatically check the Bus Lines and Hexadecimal code of the TV set. To get into the Self Check mode press the Status button on the
Remote Control at the same time pressing the -/v button on the customer controls at the front of the TV, and the screen will show:-
Hex codes
F7
BB
FB
1F
03
49
73
If the CCU ports have been checked and found to be incorrect or not located then "--" will appear in place of
1
2
3
4
5
6
7
ok
ok
ok
ok
ok
ok
Test Byte
Lst Power
U5 Det
Protector
Not Used
ok
ok
0
Not Used
Not Used
Not Used
8
9
10
11
12
13
14
15
V - Processor
DFU
Display Processor
RGB Processor
Deflection IC
Col Decoder (M)
Clock generator
MSP
ok
ok
ok
ok
ok
ok
ok
ok
16
17
18
19
20
ok
ok
ok
ok
ok
ok
ok
21
22
23
EAROM
Audio Matrix
Video Matrix
Tuner
Col Decoder (P)
Q - PIP
Not Used
Not Used
ok
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