JVC PD-42WV74 Service Manual page 53

Mesuring
Item
instrument
SUB-SCREEN Remote control
A-D unit
CONVERTER
GAIN Signal generator
Item No.
Setting value
F46 090
F47 168
F48 168
Adjust the upper half of the right screen to the brightest.
Test point Adjustment part
[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)
Adjustment item
Output level upon detection
Minimum value upon detection
Maximum value upon detection
SPLIT screen Mode
Fig.8
Description
(1) Set "VIDEO STATUS" to STANDARD.
(2) Set "ASPECT" to FULL.
(3) Select "COLOR TEMPERATURE" to LOW.
(4) Set SPLIT screen mode.
(5) Input NTSC 100% white signal to both right and left
screen.
(6) Select "1. PICTURE/SOUND" from the SERVICE
MODE for the right screen.
(7) Set < S13 > (R DRIVE), < S15 > (G DRIVE) and
< S17 > (B DRIVE) to "255".
(8) Set < S19 > (R CUTOFF), < S21 > (G CUTOFF) and
< S23 > (B CUTOFF) to "128".
(9) Set < F44 > (Picture control) to "001" and < F45 >
(Picture control mode sw) to "000" to set Y ADJUST
MAX mode.
(10) 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.
(11) Press the [MUTING] key to memorize the set
values.
(12) Select "8. PP" from the SERVICE MODE.
(13) Adjust < ADM010 > (G offset) so that upper right
part of the screen is the brightest. (Fig.8 )
(14) Press the [MUTING] key to memorize the set
values.
(15) Check the black level adjusted in BLACK LEVEL
adjustment. Adjust the black level again if it is not
proper.
(16) Select "1.PICTURE/SOUND" from the SERVICE
MODE.
(17) Set < F44 > (Picture control) to "000" to set Y
ADJUST MAX MODE.
(18) Press the [MUTING] key to memorize the set
values.
(No.YA029)1-53