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JVC AV-27F476 - SECTION 4 ADJUSTMENT; 4.1 ADJUSTMENT PREPARATION; 4.2 PRESET SETTING BEFORE ADJUSTMENTS; 4.3 MEASURING INSTRUMENT AND FIXTURES

JVC AV-27F476
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1-12 (No.YA243)
SECTION 4
ADJUSTMENT
4.1 ADJUSTMENT PREPARATION
(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 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 AC to AC
power source.
(4) Turn on the power of the TV and measuring instruments for
warming up for at least 30 minutes before starting
adjustments.
(5) If the receive or input signal is not specified, use the most
appropriate signal for adjustment.
(6) Never touch the parts (such as variable resistors,
transformers and condensers) not shown in the adjustment
items of this service adjustment.
4.2 PRESET SETTING BEFORE ADJUSTMENTS
Unless otherwise specified in the adjustment items, preset the
following functions with the REMOTE CONTROL UNIT.
4.3 MEASURING INSTRUMENT AND FIXTURES
DC voltmeter (or digital voltmeter)
Oscilloscope
Signal generator (Pattern generator) [NTSC]
TV audio multiplex signal generator
Remote control unit
4.4 ADJUSTMENT ITEMS
CHECK ITEM
B1 VOLTAGE check
HIGH VOLTAGE HOLD DOWN check
FOCUS
FOCUS adjustment
DEFLECTION CIRCUIT
V. SIZE / V. POSITION (4:3) adjustment
V. SIZE / V. POSITION (16:9) adjustment
H. POSITION / H. SIZE / SIDE PIN (4:3) / (16:9) adjustment
VIDEO CIRCUIT
WHITE BALANCE(High Light & Low Light) adjustment
SUB BRIGHT adjustment
SUB CONTRAST adjustment
MTS CIRCUIT
MTS INPUT LEVEL adjustment
MTS SEPARATION adjustment
Item Preset value
VIDEO STATUS STANDARD
PICTURE adjustment All 00
COLOR TEMPERATURE LOW
VSM OFF
SOUND adjustment All 00
BBE OFF
HYPER SORROUND OFF
ASPECT 4 : 3

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