No. 51952
AV28CT1EKS / AV28CT1EKB
AV28CT1EPS / AV28CT1EPB
AV28CT1EIS
13
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 th e initial setting values. The
setting values which adjust the screen to the optimum
condition can be different from the initial setting values.
3. Make s ure that connection is c orrectly made to AC power
sourc e.
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 rec eive or input signal is not specified, use the most
appropriate s ignal for adjustment.
6. Never touch parts (such as variable resistors, transformers and
condensers) not shown in the adjustment items of this servic e
adjustment.
7. Preparation for adjustment (pres etting):
Unless otherwis e 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
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
●
B1 power supply check.
●
Adjustment of FOCUS.
●
IF circuit adjustment.
●
VSM preset adjust s etting.
●
VIDEO / CHROMA circ uit adjustment.
●
DEFLECTION c ircuit adjustment.
●
H. BLANKING ADJUSTMENT.
●
AUDIO circuit adjustment. (Do not adjust)
