JVC AV-14F116 Service Manual page 21

4.8.5 VIDEO CIRCUIT
The setting (adjustment) using the REMOTE CONTROL UNIT is made on the basis of the initial setting values. The setting
values which adjust the screen to the optimum condition can be different from the initial setting values. Do not change the
initial setting values of the setting items not listed in "ADJUSTMENT PROCEDURE".
Measuring
Item
instrument
WHITE Signal
BALANCE generator
(LOW LIGHT)
Remote
control unit
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
CUTOFF OFF
(H.LINE OFF)
CUTOFF ON
(H.LINE ON)
R. CUTOFF( )
R. CUTOFF( )
WHITE Signal
BALANCE generator
(HIGH LIGHT)
Remote
control unit
KEY ASSIGNMENT OF REMOTE CONTROL UNIT
R. DRIVE( )
R. DRIVE( )
SUB BRIGHT Remote
control unit
SUB Remote
CONTRAST control unit
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.CUTOFF( )
4 5 6
B. CUTOFF( )
7 8 9
B. CUTOFF( )
G.CUTOFF( )
R G B
[2.V/C]
2. DRIVE (R)
2. DRIVE (B)
1 2 3
4 5 6
B. DRIVE( )
7 8 9
B. DRIVE( )
R B
[2. V/C]
3. BRIGHT
[2. V/C]
4. CONT.
Description
(1) Receive a black and 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 [2] key to turn off the single horizontal line.
(10) Press the [DISPLAY] key twice to return to the nor-
mal screen.
(1) Receive a black and white signal (colour off).
(2) Select 2. V/C from the SERVICE MENU.
(3) Select < 2. DRIVE >.
(4) Set the initial setting value of < 2. DRIVE >.
(5) Adjust the screen until it becomes white using the
[4], [6], [7] and [9] keys.
(6) Press the [DISPLAY] key twice to return to the nom-
al screen.
(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.
(No.YA439)1-21