Sansei TS5129T, Service Manual

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-14-
Service Adjustments
1. Receive a monochrome circular pattern.
2. Set the brightness and colour to normal, contrast to maximum.
3. Enter to the service mode.
4. Set each value of Item-35 RBIAS, 36 GBIAS, 37 BBIAS mode to 00. Set each value of Item-38 RDRIV, 40 BDRIV
mode to 64, 39 GDRIV to 08.
5. Select Item-41 mode to be one horizontal scanning line and turn the screen volume on the FBT to obtain just visible
one coloured line.
6. Press the 1 (Red Bias +), 4 (Red Bias -), 2 (Green Bias +), 5 (Green Bias -), 3 (Blue Bias +) or 6 (Blue Bias -)
button to adjust the brightness of each colour until a dim white line produced. Please see the control button alloca-
tions in this mode.
7. Select Item-42 DRV mode to enter the white balance adjusting mode.
8. Press the 7 (Red Drive +), RECALL (Red Drive -), 8 (Green Drive +), 0 (Green Drive -), 9 (Blue Drive +) or
SLEEP (Blue Drive -) button alternately to produce normal black and white picture.
9. Exit from the service mode.
10. Check for proper grey scale tracking at all brightness levels.
NOTE: If the grey scale adjustment is made after picture tube replacement, check the high voltage.
Items 35-42 GREY SCALE
Red Bias -
Red Bias +
Green Bias -
Blue Bias +
Green Drive -
Green Drive +
Green Bias +
Blue Bias -
Press the MENU button
to exit from service
mode
Red Drive -
E
1
6
R525
C425A
C424A
J101
T471-H10
T471-H9
T471-H7
T471-H6
T471-H5
T471-H4
T471-H1 T471-H2
C432
C433
T431
Q431
L431
C424
C425
D438
C471
C434
R433
D439
C423-H2
C423-H1
C420-H1 C420-H2
T471-H8
T431-H3 T431-H2
T431-H4 T431-H1
KSC
42
R481
R488
D485
C491
C486
L441
C465
L462-H1
H2
L462
J103
J105
C524 D441
441-H2
H2
Q432-H8
Q432-H4
Q432
Q432-H5
Q432-H7
Q432-H2 Q432-H3
Q432-H1
L432
J106
R517
D507
C515A
T471
C442-H2
C441-H2
R241
J114
J115
J116
KDY
C423
KDY-H1
KDY-H3
KDY-H6
C420
R524
C442
-H3
T471-H11
3
R528
R488A
J221
R481-H1
R481-H2
T471
FBT
MAIN BOARD
SCREEN VR
(Under side)
Blue Drive +
Blue Drive -
Red Drive +