JVC AV-29QH4BU, Руководство по обслуживанию

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(No.YA086)1-13
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 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 [ MUTING ] and [ INFORMATION ] key at the
sametime. And then press [ BLUE ] and [ TELETEXT ]
key respectively.
Enter screen adjustment from the service mode.
(2) 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 by pressing until voltage at pin 1 of
TUNER is equal to 3.0V.
(6) Press the [ INFORMATION ] key to memorize the set
value.