JVC LT-32WX84, Service Manual, Page: 47 / 130

(No.YA004)1-47
SUB-SCREEN
A-D
CONVERTER
GAIN Remote control
unit
Signal generator
[8. PP]
ADM010: (NO DISPLAY)
(G GAIN)
[1. PICTURE/SOUND]
S13: RDRV (R DRIVE)
S15: GDRV (G DRIVE)
S17: BDRV (B DRIVE)
S19: CUTR (R CUTOFF)
S21: CUTG (G CUTOFF)
S23: CUTB (B CUTOFF)
F44: (NO DISPLAY)
(Picture control)
F45: (NO DISPLAY)
(Picture control mode sw)
F46: OUT LV.
(Output level upon
detection)
F47: LMT BTM
(Minimum value upon
detection)
F48: LMT TOP
(Maximum value upon
detection)
(1) Input NTSC signal that shows brightness gradation
with 75% white into both the right and the left
screen.
(2) Set "VIDEO STATUS" to STANDARD.
(3) Set "ASPECT" to FULL.
(4) Select "COLOR TEMPERATURE" to LOW.
(5) Set SPLIT screen mode.
(6) Select "1.PICTURE/SOUND" from the SERVICE
MODE for the right screen.
(7) Set < F44 > (Picture control) to "001" and <F45 >
(Picture control mode sw) to "000" to set Y ADJUST
MAX mode.
(8) Set < F46 > (Output level upon detection), < F47 >
(Minimum value upon detection), and < F48 >
(Maximum value upon detection) to values as
shown in the left table.
(9) Press the [MUTING] key to memoirze the set value.
(10) Select "8.PP" from the SERVICE MODE.
(11) Adjust < ADM010 > (G OFFSET) so that the 75%
white part on the upper right part of the screen is
white. (Fig.8)
(12) Press the [MUTING] key to memoirze the set value.
(13) Check the black level adjusted in "SPLIT screen
BLACK LEVEL adjustment". Adjust the black level
of SUB SCREEN again if it is not proper.
(14) Select "1.PICTURE/SOUND" from the SERVICE
MODE.
(15) Set < F44 > (Picture control) to "000" to cancel Y
ADJUST MAX MODE.
(16) Press the [MUTING] key to memoirze the set value.
Fig.8
Item
Measuring
instrument
Test point Adjustment part Description
090 Output level upon detection
168 Minimum value upon detection
168 Maximum value upon detection
F46
F47
F48
Item No. Setting value Adjustment item
SPLIT screen mode
Adjust so that 75% white is the brightest.
Adjust so that 75% white is the brightest.