JVC HD-52Z585 Service Manual page 32

Measuring
Item
instrument
1125i Signal
generator
A-D OFFSET
adjustment
Remote
control unit
Minimize the red and blue noises
in the upper half of the screen.
(No color or lightest color)
Signal
SUB SCREEN
generator
A-D OFFSET
adjustment
Remote
control unit
Video no signal.
VIDEO-1
<No signal>
1-32 (No.YA092B)
Test point Adjustment part
[1. ADJUST]
S001:PREPARE
S013:HD CB OF
(1125i Cb offset)
S014:HD CR OF
(1125i Cr offset)
S030:R DRIVE
(Red drive)
S031:G DRIVE
(Green drive)
S032:B DRIVE
(Blue drive)
[1. ADJUST]
S001:PREPARE
S016:RT CB OF
(Sub screen Cb offset)
S017:RT CR OF
(Sub screen Cr offset)
S030:R DRIVE
(Red drive)
S031:G DRIVE
(Green drive)
S032:B DRIVE
(Blue drive)
Set the 0% black part to be brightest.
TV (RF)
<30% all white>
Description
(1) Input a 1125i 30% all white pattern signal from
COMPONENT VIDEO INPUT terminal.
(2) Set VIDEO STATUS to [STANDARD].
(3) Set ASPECT to [FULL].
(4) Set COLOR TEMPERATURE to [LOW].
(5) Select [1.ADJUST] from the SERVICE MENU.
(6) Adjust < S030 > (Red drive), < S031 > (Green drive)
and < S032 > (Blue drive) to set the values [128].
(7) Adjust < S001 > (PREPARE) from 000 to 013,
it goes to [Cb offset] adjustment mode.
(8) Adjust < S013 > (1125i Cb offset) to minimize the
blue noise in the upper half of the screen.
(9) Adjust < S014 > (1125i Cr offset) to minimize the red
noise in the upper half of the screen.
(10) Press the [MUTING] key to memorized the set
value.
(11) Repeat from (8) to (10) then adjust the adjustment
screen lightest color.
(12) Adjust < S001 > (PREPARE) from 013 to 000,
it change to the normal mode.
(1) Set VIDEO STATUS to [STANDARD].
(2) Set ASPECT to [FULL].
(3) Set COLOR TEMPERATURE to [LOW].
(4) Set MULTI SCREEN to [TWIN].
(5) Set the LEFT screen to VIDEO-1 mode (No signal).
(6) Receive a NTSC 30% all white signal on the RIGHT
screen from RF(TV).
(7) Select [1.ADJUST] from the SERVICE MENU.
(8) Adjust < S030 > (Red drive), < S031 > (Green drive)
and < S032 > (Blue drive) to set the values [128].
(9) Adjust < S001 > (PREPARE) from 000 to 016,
it goes to [Sub-screen Cb offset] adjust mode.
(10) Adjust < S016 > (Sub-screen Cb offset) to minimize
the blue noise in the upper half of the screen.
If you select < S016 >, the screen automatically turn
to adjust mode.
(11) Adjust < S017 > (Sub-screen Cr offset) to minimize
the red noise in the upper half of the screen.
(12) Press the [MUTING] key to memorized the set
value.
(13) Adjust < S001 > (PREPARE) from 016 to 000,
it change to the normal mode.