Troubleshooting - JVC LT-26X506/S Service Manual

4.7 ADJUSTMENT PROCEDURE
4.7.1 VIDEO CIRCUIT
Measuring
Item
instrument
WHITE Remote
BALANCE control unit
(HIGHLIGHT)
Signal
generator
This service manual does not describe TROUBLESHOOTING.
1-16 (No.YA333)
Test point Adjustment part
[1.ADJUST]
S001: R DRIVE (Red drive)
S002: G DRIVE (Green drive)
S003: B DRIVE (Blue drive)
SECTION 5

TROUBLESHOOTING

Description
(1) Receive a NTSC 75% all white signal.
(2) Set "VIDEO STATUS" to "STANDARD".
(3) Set "ASPECT" to "FULL".
(4) Select "COLOUR TEMPERATURE" to "LOW".
(5) Select "1.ADJUST" from the SERVICE MODE.
(6) Set < S001 > (R DRIVE), < S002 > (G DRIVE)
and < S003 > (B DRIVE) to "133".
(7) Adjust to keep one of < S001 > (Red drive),
< S002 > (Green drive) or < S003 > (Blue drive)
unchanged, then lower the other two so that the
all-white screen is equally white throughout.
NOTE:
Set one or more of < S001 >, < S002 >, and
< S003 > to "128" [LT-26X506] or "125" [LT-
32X506].
(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.