1-12 (No.YA316)
4.6
ADJUSTMENTS PROCEDURE
4.6.1 FOCUS ADJUSTMENT
4.6.2 SCREEN ADJUSTMENT
4.6.3 AGC ADJUSTMENT
Item
Measuring
instrument
Test point
Adjustment part
Description
FOCUS
adjustment
Signal
generator
Remote
control unit
FOCUS VR
[On the FBT]
(1) Receive a crosshatch signal.
(2) Adjust
FOCUS VR
on the FBT for the lines to
become as thin as possible.
FBT
FOCUS VR
SCREEN VR
Item
Measuring
instrument
Test point
Adjustment part
Description
SCREEN
adjustment
Remote
control unit
SCREEN VR
[On the FBT]
(1) Press the [
MUTING
] and [
INFORMATION
] key at
the same time to enter the SERVICE MODE.
(2) Press the [
BLUE
] and [
TELETEXT
] key respectively
to enter screen adjustment from the service mode.
(3) Adjust the
SCREEN VR
until the "
G2 ADJUST OK
"
sign appears.
Item
Measuring
instrument
Test point
Adjustment part
Description
AGC
adjustment
Signal
generator
Remote
control unit
DC volt meter
AGC
(1) Receive a
PAL BG
signal at 60dB
µ
V RF signal level.
(2) Enter the SERVICE MODE.
(3) Press the [
GREEN
] key to enter the
VIDEO
adjustment group.
(4) Select
AGC
.
(5) Adjust
AGC
until voltage at
pin 1
of TUNER is equal
to 3.0V.
(6) Press the [
INFORMATION
] key to memorize the set
value.
