JVC AV-2100QE Service Manual page 24

4.8.5 VIDEO CIRCUIT
Measuring
Item
instrument
WHITE Signal
BALANCE generator
(LOW LIGHT)
Remote
control unit
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
H.LINE ON/OFF
R. CUT OFF( )
R. CUT OFF( )
WHITE Signal
BALANCE generator
(HIGH LIGHT)
Remote
control unit
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
G. DRIVE( )
G. DRIVE( )
SUB BRIGHT Remote
control unit
SUB Remote
CONTRAST control unit
1-24 (No.YA552)
Test point Adjustment part
[2.V/C]
1. CUT OFF (R)
1. CUT OFF (G)
1. CUT OFF (B)
SCREEN VR
[IN HVT]
1 2 3
G.CUT OFF( )
4 5 6
B. CUT OFF( )
7 8 9
B. CUT OFF( )
G.CUT OFF( )
R G B
[2.V/C]
2. WDR (G)
2. WDR (B)
1 2 3
4 5 6
B. DRIVE( )
7 8 9
B. DRIVE( )
G B
[2. V/C]
3. BRIGHT
[2. V/C]
4. CONT.
Description
(1) Receive a 100% all white signal (colour off).
(2) Select 2. V/C from the SERVICE MENU.
(3) Select <1. CUT OFF>.
(4) Set the initial setting value of <1. CUT OFF>.
(5) Press the [1] key to show the single horizontal line
on screen.
(6) Turn the SCREEN VR fully counter-clockwise, then
slowly turn it clockwise to where one of a red, blue or
green colour is faintly visible.
(7) Adjust the two colors which did not appear until the
single horizontal line that is displayed becomes
white using the [4] to [9] keys.
(8) Turn the SCREEN VR to where the single horizontal
line glows faintly.
(9) Press the [1] key to turn off the single horizontal line.
(1) Receive a 100% all white signal (colour off).
(2) Select 2. V/C from the SERVICE MENU.
(3) Select <2. WDR>.
(4) Set the initial setting value of <2. WDR>.
(5) Adjust the screen until it becomes white using the
[5], [8], [6] and [9] keys.
(1) Receive any broadcast.
(2) Select 2. V/C from the SERVICE MENU.
(3) Select <3. BRIGHT>.
(4) Set the initial setting value of <3. BRIGHT>.
(5) If the brightness is not the best with the initial setting
value, make fine adjustment until you get the best
brightness.
(1) Receive any broadcast.
(2) Select 2. V/C from the SERVICE MENU.
(3) Select <4. CONT>.
(4) Set the initial setting value of <4. CONT>.
(5) If the contrast is not the best with the initial setting
value, make fine adjustment until you get the best
contrast.