Do Not Adjust - JVC AV32H20EUS Service Manual

AV32H20EUS
AV28H20EUS
AV28H20EUB
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.
6. Never touch parts (such as variable resistors, transformers and
condensers) not shown in the adjustment items of this servic e
adjustment.
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
Check ing items.
●
Adjustment of FOCUS & SCREEN
●
VSM preset adjust s etting.
●
VIDEO / CHROMA circ uit adjustment.
●
DEFLECTION c ircuit adjustment.
●
AUDIO circuit adjustment. (Do not adjust)
●
12
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
PICT URE MODE (VSM)
SLEEP T IMER
T ONE BALAN CE
ZOOM
No. 51945
NORMAL
OF F
CENTER
FULL