JVC PD-42WV74 Service Manual page 49

Mesuring
Item
instrument
A-D Remote control
CONVERTER unit
OFFSET
Signal generator
Item No. Setting value
F46
090
F47 000
F48
000
Set to allow color to disappear
Test point Adjustment part
[8.PP]
ADM012: (NO DISPLAY)
(R OFFSET)
ADM014: (NO DISPLAY)
(B 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)
(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.4
Description
(1) Input NTSC component 30% all-white signal.
(2) Set "VIDEO STATUS" to STANDARD.
(3) Set "ASPECT" to FULL.
(4) Select "COLOR TEMPERATURE" and set 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 "003" to set the
chrominance adjustment zero 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 "8.PP" from the SERVICE MODE.
(12) Change the value of < ADM014 > (B OFFSET) from
the initial value in the range of 5 to set the screen
magenta.
(13) Adjust < ADM012 > (R OFFSET) to change the
screen from magenta to blue. And take a note of the
value.
(14) Change the value of < ADM012 > (R OFFSET) from
the value above at the range of 5 to set the
adjustment screen magenta.
(15) Adjust < ADM014 > (B OFFSET) to change the
screen from magenta to red. And take a note of the
value.
(16) Return the value of < ADM012 > (R OFFSET) to the
value that has been taken note of in the procedure
13.
(17) Press the [MUTING] key to memorize the set
values.
(18) Set "MULTI-SCREEN" to "SPLIT" mode.
(19) Input monochrome signal such as cross hatch both
to the right and the left screen.
(20) Set < ADM012 > (R OFFSET) and < ADM014 > (B
OFFSET) to the same value as in single-screen
mode.
(21) Press the [MUTING] key to memorize the set values
(22) Input 1080i component 30% all-white signal.
(23) Repeat steps (6) ~ (17).
(24) Set < F44 > (Picture control) to "000" to cancel the
chrominance adjustment zero mode.
(25) Press the [MUTING] key to memorize the set values
(No.YA029)1-49