JVC pd-42dxt, Service Manual, Page: 44 / 56

PD-42DXT
1-44 (No.52108)
3.8.2 RECEIVER UNIT
Item
Mesuring
instrument
Test point Adjustment part Description
BLACK
LEVEL Remote control
unit
Signal generator
[8.PP]
ADM013: (NO DISPLAY)
(G OFFSET)
[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)
(SWITCH TO PICTURE
CONTROL MODE)
F46: OUT LV.
(Output Level Upon
Detection)
F47: LMT BTM
(Minimum Value Upon
Detection)
F48: LMT TOP
(Maximum Value Upon
Detection)
S84: TEST
(TEST MODE)
(1) Input NTSC signal that shows brightness radation
portion with 0% black.
(2) Set "
映像選択
" to
スタンダード
.
(3) Set " 画面サイズ " to フルモード .
(4) Select "
映像調節
" and set white balance to "
低い色
温度 ".
(5) Select “1.PICTURE/SOUND” from the Service
Menu.
(6) Set <F44> (Picture Control) to "001" and <F45>
(Switch to Picture Control Mode) to "000" to set Y
ADJUST MAX MODE.
(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 "125".
(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) Set <S84>(Test Mode) to "003".
(11) Press the [
消音
] key to save the values upon
adjustment.
(12) Select “8.PP” from the Service Menu.
(13) Adjust <ADM013> (G OFFSET) to set the 0% black
part on the upper half of the screen to maximum
brightness (Fig.2).
(14) Add reference offset value "0" to the <ADM013> (G
OFFSET) value.
(15) Press the [
消音
] key to save the values upon
adjustment.
(16) Select "1. PICTURE/SOUND" from the Service
Menu.
(17) Return <S84> (TEST MODE) to "000".
(18) Check the black level. Perform the "BLACK LEVEL
Adjustment" again if the adjusted value is out of
alignment.
(19) Set <F44> (PICTURE CONTROL) to "001" to
cancel Y ADJUST MAX MODE.
(20) Press the [
消音
] key to save the values upon
adjustment.
Fig.2
Item No. Preset value Item to be adjusted
F46 090 Output Level Upon Detection
F47 016 Minimum Value Upon Detection
F48 016 Maximum Value Upon Detection
Adjust the 0% black to maximum brightness