JVC AV-29FH1BUG, Service Manual

Page: 10 / 48

1-10 (No.YA008)
4.4.4 SCREEN ADJUSTMENT
4.4.5 WHITE BALANCE ADJUSTMENT
4.4.6 DEFLECTION CIRCUIT ADJUSTMENT
Item
Measuring
instrument
Test point Adjustment part Description
SCREEN
adjustment Signal
generator
Remote
control unit
G2-SCREEN
SCREEN VR
[On FBT]
(1) Receive a colour bar pattern signal.
(2) Select < G2-SCREEN >.
(3) Adjust the SCREEN VR on the FBT to bring the
cursor to central position.
Item
Measuring
instrument
Test point Adjustment part Description
WHITE
BALANCE
adjustment Signal
generator
Remote
control unit
RED BIAS
GRN BIAS
RED GAIN
GRN GAIN
BLUE GAIN
(1) Receive a black and white pattern signal (colour off).
(2) Select < RED BIAS >, < GRN BIAS > and adjust the
screen until the black portion in the screen becomes
black.
(3) Select < RED GAIN >, < GRN GAIN >, < BLUE GAIN >
and adjust the screen until the white portion in the
screen become white.
Item
Measuring
instrument
Test point Adjustment part Description
VERTICAL
GEOMETORY
adjustment Signal
generator
Remote
control unit
V. LINEAR
S CORRECT
VERT SIZE
VERT CENT (1) Receive a circle pattern signal.
(2) Select < V. LINEAR >(Veretical linearity), < S
CORRECT > (S correction), < VERT SIZE >(Vertical
size), < VERT CENT >(Vertical center) respectively.
(3) Adjust to compensate for vertical distortion.
HORIZONTAL
POSITION
adjustment Signal
generator
Remote
control unit
HOR CEN (1) Receive a circle pattern signal.
(2) Select < HOR CEN >(Horizontal center).
(3) Adjust to have the picture in the center of the screen.