No. 51881
AV28BT5ENS / AV28BT5ENB
AV28BT5EES / AV28BT5EEB
12
Item
Measuring
instruments
Test point
Adjustment part
Description
WHITE
BALANCE
Signal
generator
ADJUST 00
(White point
- RED)
ADJUST 01
(White
point
-
GREEN)
ADJUST 02
(White point
- BLUE)
[LOW LIGHT]
1. Receive a whole black signal.
2. Adjust the <Adjust 00>, <Adjust 01>, <Adjust 02>, in the
SERVICE MENU so that the entire screen do not shine black.
[HIGH LIGHT]
1. Receive a white and black signal (colour off).
2. Adjust the <Adjust 00>, <Adjust 01>, <Adjust 02>, in the
SERVICE MENU so that the whiteness in the screen become
sharp.
AGC
Adjustment
DC
voltmeter
ADJUST 03
1.
Receive a any broadcast.
2. Select
<ADJUST 03>
from SERVICE MENU
3.
Connect a DC voltmeter to pin 1 of the tuner. Change the
AGC parameter until you see 3.70VDC on voltmeter display.
IF-PLL
NEGATIVE
Adjustment
ADJUST 04
1. Select
<ADJUST 04>
from SERVICE MENU.
2.
Adjustment value is set to 80 as a default value.
IF-PLL
POSITIVE
Adjustment
ADJUST 05
1. Select
<ADJUST 05>
from SERVICE MENU.
2.
Adjustment value is set to 80 as a default value.
