-14-
E
10
7
9
7
R732
R51
634
JP441
J507
J50
KDY-6
KDY-5
KDY-4
KDY-3
KDY-1
T471A
T471
FBT
T471-H4
T471-H7
T471-H12
T471-H10
T471-H1
T471-H2
L441-H2
L441-H1
T471-H11
C524
D485
R488
R424
C471
L631
R481
J509
R516
C491
KQ
R355
J501
3
1
JW4
C641
D631
C631
JP631
1AA4B10S0180A
1
D611
C611
L441
L441A
L441-H3
C435
C435B
C437
C435A
C435-H3
C435-H2
C435-H1
C441B
C441A
D441
C435-H4
C441-H3
TP-B
R628
R629
C629
Q615
R621
D618
R622
Q616
R624
R623
C615
C645
Q613-H
T611-H10
T611-H7
Q613-H3
Q613-H2
Q613-H5
Q613-H4
JP641
R525
R486
R485
J634
D507
T611-H11
(1) Receive the 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-
14 RBIAS, 15 GBIAS, 16 BBIAS
mode to 0,
17 RDRIV, 19 BDRIV
mode to 64.
(5) Select Item-
20
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 -)
,
2 (Red Bias +)
,
5 (Green Bias -)
,
6 (Green Bias +)
,
9 (Blue Bias -)
or
0 (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-
21 DRV
mode to enter the white balance adjusting mode.
(8) Press the
3 (Red Drive -)
,
4 (Red Drive +)
,
-/-- (Blue Drive -)
or
RECALL (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 14-17, 19-21 GREY SCALE
Service Mode Adjustments
MAIN BOARD
SCREEN VR
(Under side)
0
7
1
4
8
5
2
3
6
9
P
▲
P
▼
JXMYA
-/--
P
P
TV/AV
A B
CH SCAN
TIMER
MENU
PIC MODE
SWAP
BASS
SURROUND
Red Bias -
Red Bias +
Green Bias -
Blue Bias +
Red Drive +
Blue Drive -
Blue Drive +
Green Bias +
Blue Bias -
Red Drive -
Press the MENU
button to exit
from service
mode.
SM_21-C5ZB(Thai) 7/2/04 5:24 PM Page 14
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