No. 52055
AV-21BF11ENS
AV-21BF11EES
AV-21BF11EPS
AV-21BF11EJS
16
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AGC AUTOMATICALLY ADJUSTMENT
Item
Measuring
instrument
Test point
Ad justment part
Description
AGC
AUTOMATIC-
AL LY
adjustment
& check
Remote
control unit
AGC
1. Enter SERVICE MENU.
2. Receive a 60dB
μ
V RF signal level.
3. Select AGC with the FUNCTION ( / ) key.
4. Press BLUE key on the remote control unit.
5. Then the adjustment will be done automatically by software.
6. See the AGC indicator on SERVICE MENU, it must be “1”.
7. Check that picture is normal at 90dB
μ
V signal level.
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DEFLECTION CIRCUIT ADJUSTMENT
Item
Measuring
instrument
Test point
Ad justment part
Description
VERTICAL
LINEARITY
adjustment
Signal
generator
Remote
control unit
VLIN
1. Receive a PAL B/G circle pattern.
2. Enter SERVICE MENU.
3. Select VLIN (Vertical linearity) with the FUNCTION ( / ) key.
4. Adjust VLIN with the FUNCTION ( / ) key until circle as
round as possible.
5. Press the MENU key and memoriz e the s et value.
RGB MODE
HORIZONTAL
SHIFT
OFFSET
adjustment
Signal
generator
Remote
control unit
RGBH
1. Input R/G/B circle pattern signal via video input terminal.
2. Press AV key on the remote control unit, force the TV to RGB
mode.
3. Enter SERVICE MENU.
4. Select RGBH (RGB mode horiz ontal shift offset) with the
FUNCTION ( / ) key.
5. Adjust RGBH with the FUNCTION ( / ) key until the circle
pattern is horizontally centered.(
A
=
B
)
6. Check and readjust RGBH item if the adjus tment becomes
improper after some other geometric adjustments are done.
:
1
1
IF INDICATOR
AGC INDICATOR
NONE
SERVICE MENU SCREEN
A
B
