Troubleshooting - JVC LT-26A61BJ Service Manual

4.7 ADJUSTMENT PROCEDURE
4.7.1 VIDEO CIRCUIT
Measuring
Item
instrument
WHITE Remote
BALANCE control unit
(HIGHLIGHT)
Signal
generator
26V-inch
Models
LT-26A61BJ
LT-26A61BU
LT-26A61BU/C
LT-26A61SJ
LT-26A61SU
LT-26A61SU/C
32V-inch
Models
LT-32A61BJ
LT-32A61BU
LT-32A61BU/C
LT-32A61SJ
LT-32A61SU
LT-32A61SU/C
This service manual does not describe TROUBLESHOOTING.
Test point Adjustment part
[1.ADJUST]
S013: R DRIVE (Red drive)
S015: G DRIVE (Green drive)
S017: B DRIVE (Blue drive)
Setting Value
146
146
140
140
140
146
Setting Value
146
146
140
150
150
146
SECTION 5

TROUBLESHOOTING

Description
(1) Receive a PAL 75% all white signal.
(2) Set PICTURE MODE to "STANDARD".
(3) Set ZOOM to "FULL".
(4) Set COLOUR TEMP. to "NORMAL".
(5) Select "1.ADJUST" from the SERVICE MODE.
(6) Set < S013 > (R DRIVE), < S015 > (G DRIVE)
and < S017 > (B DRIVE) to setting values of left
table.
(7) Adjust to Keep one of < S030 > (Red drive),
< S031 > (Green drive) or < S032 > (Blue
drive) unchanged, then lower the other two
so that the all-white screen is equally white
throughout.
NOTE:
Set one or more of < S013 >, < S015 >, and
< S017 > to setting values of left table.
(8) Check that white balance is properly tracked
from low light to high light. If the white balance
tracking is deviated, adjust to correct it.
(9) Press the [MUTING] key to memoirze the set
value.
(No.YA369)1-19