Service Adjustments; Adjustment Items - JVC AV32T25EKS Service Manual

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AV32T25EKS / AV32R25EKS
AV32T55EKS / AV32R250EKS
AV32T25EIS

SERVICE ADJUSTMENTS

BEFORE STARTING SERVICE ADJUSTMENT
1. There ar e 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 differ ent fr om 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.
MEASURING INSTRUMENT AND FIXTURES
1. DC voltmeter (or digital voltmeter)
2. Oscilloscope
3. Signal generator (Pattern generator) [PAL / NTSC]
4. Remote control unit

ADJUSTMENT ITEMS

B1 POWER SUPPLY check.
●
HIGH VOLTAGE check.
●
FOCUS Adjustment.
●
IF circuit adjustment.
●
VSM preset adjust s etting.
●
VIDEO / CHROMA circ uit adjustment.
●
DEFLECTION c ircuit adjustment.
●
H BLANKING adjus tment.
●
AUDIO circuit adjustment. (Do not adjust)
●
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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)
SLEEP T IMER
BALANCE
ZOOM
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26/1/2014