No. 51778
AV28L2EUGR
AV28L2EUBL
AV28L2EUGY
12
SERVICE ADJUSTMENTS
BEFORE STARTING SERVICE ADJUSTMENT
1.
There are 2 ways of adjusting this TV: One is with the
REMOTE CONTROL UNIT and the other is the conventional
method using adjustment parts and components.
2.
The setting
(adjustment) using the REMOTE CONTROL
UNIT is made on the basis of the initial setting values. The
setting values which adjust the screen to the optimum
condition can be different from the initial setting values.
3. Make sure that connection is correctly made to AC power
source.
4. Turn on the power of the TV and measuring instrument for
warming up for at least 30 minutes before starting adjustment.
5. If the receive or input signal is not specified, use the most
appropriate signal for adjustment.
6. Never touch parts (such as variable resistors, transformers and
condensers) not shown in the adjustment items of this service
adjustment.
7. Preparation for adjustment (presetting):
Unless otherwise specified in the adjustment items, preset the
following functions with the REMOTE CONTROL UNIT:
"
Setting position
PICTURE MODE (VSM)
NORMAL
SLEEP TIMER
OFF
BALANCE
CENTER
ECO
OFF
ZOOM
PANORAMIC
MEASURING INSTRUMENT AND FIXTURES
1. DC voltmeter (or digital voltmeter)
2. Oscilloscope
3. Signal generator (Pattern generator) [PAL / SECAM / NTSC]
4. Remote
control
unit
ADJUSTMENT ITEMS
●
Checking items.
●
Adjustment of FOCUS.
●
VSM preset setting.
●
VIDEO / CHROMA circuit adjustment.
●
DEFLECTION circuit adjustment.
●
AUDIO circuit adjustment.
(Do not adjust)
