1-16 (No.52137)
4.6
ADJUSTMENT PROCEDURE
4.6.1
FOCUS / SCREEN ADJUSTMENT
4.6.2
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 PAL cross-hatch signal.
(2) Adjust FOCUS VR on the FBT as thin as possible.
SCREEN
adjustment
Remote
control unit
SCREEN VR
[On the FBT]
(1) Enter the OPTIONS MENU.
(2) Select option No.002 and change bit 6 from 0 to 1
disabling vertical scan. Then horizontal line appears.
(3) Adjust horizontal line as thin as possible via screen
adjust pot.
(4) Press number 0 key to leave service menu.
Item
Measuring
instrument
Test point
Adjustment part
Description
AGC
adjustment
Signal
generator
Remote
control unit
Volt meter
003
(1) Receive a PAL BG signal at 60dB
µ
V RF signal level.
(2) Enter the SERVICE MENU.
(3) Select ADJUST MENU.
(4) Select 003.
(5) Adjust 003 by pressing till voltage at pin 1 of TUNER
is equal to 3.0V.
FBT
FOCUS VR
SCREEN VR