JVC PD-42WV74 Service Manual page 50

Mesuring
Item
instrument
NTSC Remote control
BRIGHTNESS unit
Signal generator
Item No. Setting value
090
F46
016
F47
016
F48
Set this part to the same black color as in the upper part.
1-50 (No.YA029)
Test point Adjustment part
[2. YC SEP]
YCM131: (NO DISPLAY)
(BRIGHTNESS)
[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
Fig.5
Description
(1) Input NTSC all-black signal.
(2) Set "VIDEO STATUS" to STANDARD.
(3) Set "ASPECT" to FULL.
(4) Select "COLOR TEMPERATURE" to LOW.
(5) Select "1.PICTURE/SOUND" from the SERVICE
MODE.
(6) Set < S13 > (R DRIVE), < S15 > (G DRIVE) and
< S17 > (B DRIVE) to "255".
(7) Set < S19 > (R CUTOFF), < S21 > (G CUTOFF) and
< S23 > (B CUTOFF) to "128".
(8) Set < F44 > (Picture control) to "001" and < F45 >
(Picture control mode sw) to "000" to set Y DJUST
MAX MODE.
(9) 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.
(10) Press the [MUTING] key to memorize the set
values.
(11) Select "2. YC SEP" from the SERVICE MODE.
(12) Adjust < YCM131 > (BRIGHTNESS) to set the lower
half of the screen to the same black color as in the
upper part. (Fig.5)
(13) Press the [MUTING] key to memorize the set
values.
(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 memorize the set
values.