ADJUSTMENT PROCEDURE
Item / Preparation
Adjustment/Confirmation
+B SET-UP
4. Receive a Window pattern.
5. Set the controls :-
Brightness
Minimum
Contrast
Minimum
Volume
Minimum
Confirm the following voltages.
A - Board
A1 Pin2
7.5
± 0.5V
IC1252 Pin2
2.5
±
0.25V
A1 Pin12
-20
±
0.5V
IC1251 Pin3
3.3
+0.3 / -0.2V
A1 Pin16
20
±
0.5V
IC3302 Pin3
12
±
0.6V
A2 Pin15
30
±
0.5V
IC2707 Pin3
8
±
0.4V
A2 Pin6
15
±
0.5V
L2707
(IC2708) 9
±
0.4V
A3 Pin4
15
±
0.5V
L2704
(IC2706) 5
±
0.2V
A3 Pin2
-15
±
0.5V
L2716
(IC2705) 3.3
±
0.2V
L2717
(IC2709) 3.3
±
0.2V
D – Board
TPD8-GND
7.5
±
0.5V
TPD9-TPD11
38.5
±
2V
TPD10-GND
15.5
±
1V
TPD13-GND
14.5
±
1V
TPD15-GND
144.8 ±
1V
TPD32-GND
209
±
10V
C864-GND
-15.5 ±
1V
D2 Pin15-GND
31
±
1V
CUT OFF
1. Receive a Window pattern.
2. Degauss the tube externally.
3. Set the TV into Service Mode 1.
4. Select Sub brightness mode.
To adjust Cutoff connect an oscilloscope to the Blue cathode. Adjust "Cutoff"
value using the "Yellow" and "Blue" buttons until the black level is 170V ± 5V,
press "STR" to store the value. Remove the oscilloscope.
Select Highlight/Lowlight mode press "5" to collapse the screen and adjust the
screen “VR” until the display is just visible, press "5" to return to service mode.
Using the "Yellow" and "Blue" buttons adjust until optimum picture white
balance is achieved, press "STR" to store the value. Select Sub Brightness
mode and adjust until optimum picture brightness is achieved.
SELF CHECK
Self-Check is used to automatically check the bus lines and hexadecimal code of the TV set.
To get into 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, and the screen will show: -
To exit Self-Check, switch off the TV set at the power button.
5
If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".
Factory use only
Sum
:
****
MEM
:
O.K.
GC1
:
O.K.
GC2
:
O.K.
VDU
:
O.K.
CIP
:
O.K.
RGB
:
O.K.
AVSW
:
O.K.
TUN1
:
O.K.
TUN2
:
O.K.
DAC1
:
O.K.
MSP
:
O.K.
DOLBY
:
O.K.
CODEC
:
O.K.
DAC2
:
O.K.
DAC3
:
O.K.
OPTION 1 :
OPTION 2 :
OPTION 3 :
OPTION 4 :
OPTION 5 :
OPTION 6 :
OPTION 7 :
OPTION 8 :
OPTION 9 :
OPTION 10:
OPTION 11:
OPTION 12:
OPTION 13:
Check :
TX-32PB50F_F/P
0F
00
B3
11
00
50
77
59
85
81
09
00
FA
FC
TX-36PB50F_F/P
0F
00
B3
11
00
50
77
59
85
81
09
40
FA
3C
TX-28/32/36PB50D
0F
00
B3
11
00
50
7F
D9
85
81
09
20
FA
A4
00 40
TX-28PB50F
0F
00
B3
11
00
50
77
59
85
81
09
20
FA
1C
84 C4
Summary of Contents for TX-28PB50F
Page 8: ...8 ...
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Page 57: ...A BOARD TNPH0348 55 ...
Page 58: ...A BOARD TNPH0348 56 ...
Page 59: ...D DOARD TNPH0349 57 ...
Page 60: ...DF BOARD TNPA1806 ...
Page 61: ...DIODES D1011 A2 D1012 A2 D3103 B2 D3104 B2 TRANSISTORS Q1003 A2 2 1 A B G BOARD TNP8EG004 58 ...
Page 62: ...L BOARD TNPA1726 59 ...
Page 63: ...H BOARD TNPA1724 60 ...
Page 65: ...62 NOTES ...
