JVC AV-21VT14/P Service Manual page 20

Measuring
Item
instrument
WHITE Signal
BALANCE generator
(High light)
adjustment Remote
control unit
REMOTE CONTROL UNIT
R DRIVE ( )
R DRIVE ( )
SUB BRIGHT Remote
adjustment control unit
SUB Remote
CONTRAST control unit
adjustment
1-20 (No.YA140)
Test point Adjustment part
[2. V/C]
3. WDR (R)
3. WDR (G)
3. WDR (B)
V/C PAL
3. WDR (R) ( )
** **
(G) ( )
** **
(B) ( )
** **
1 2 3
G DRIVE ( )
4 5 6
B DRIVE ( )
7 8 9
B DRIVE ( )
G DRIVE ( )
[2. V/C]
4. BRIGHT
[2. V/C]
5. CONT
Description
Notes:
• Proceed to the following adjustment after having
completed the WHITE BALANCE (Low light) adjustment.
• Set PICTURE MODE (VSM) to "BRIGHT".
(1) Receive a PAL black and white signal (colour off).
(2) Select 2. V/C from the SERVICE MENU.
(3) Select 3. WDR (R), (G) and (B).
(4) Set each value to initial setting value with the [4] to
[9] keys.
(5) Use the [4] to [9] keys to produce a white screen.
(6) Press the [DISPLAY] key twice to return to the normal
screen.
Variable
Adjustment Item
range
R
0 ~ 63
0 ~ 63
3. WDR G
B
0 ~ 63
Notes:
• Proceed to the following adjustment after having
completed the WHITE BALANCE (Low light) and
WHITE BALANCE (High light) adjustment.
• Set PICTURE MODE (VSM) to "BRIGHT".
(1) Receive a broadcast.
(2) Select 2. V/C from the SERVICE MENU.
(3) Select 4. BRIGHT.
(4) Set the initial setting value.
(5) If the brightness is not best with the initial setting value,
make fine adjustment until you get the best brightness.
(6) Press the [DISPLAY] key twice to return to the
normal screen.
Notes:
• Proceed to the following adjustment after having
completed the SUB BRIGHT adjustment.
• Set PICTURE MODE (VSM) to "BRIGHT".
(1) Receive a broadcast.
(2) Select 2. V/C from the SERVICE MENU.
(3) Select 5. CONT.
(4) Set the initial setting value.
(5) If the contrast is not best with the initial setting value,
make fine adjustment until you get the best contrast.
(6) Press the [DISPLAY] key twice to return to the
normal screen.
Initial setting
value
32
32
45