Adjustment - JVC AV-29L6SU Service Manual

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 ADJUSTMENT
Unless otherwise specified in the adjustment items, preset the
following functions with the REMOTE CONTROL UNIT.
Item
PICTURE MODE
CONTRAST / BRIGHT / SHARP / COLOUR / HUE
COLOUR TEMP
DIGITAL VNR
BASS / TREBLE / BALANCE
HYPER SOUND
ZOOM
SLEEP TIMER
SECTION 4

ADJUSTMENT

4.3 MEASURING INSTRUMENT AND FIXTURES
(1) DC voltmeter (or digital voltmeter)
(2) Oscilloscope
(3) Signal generator
(Pattern generator : PAL / SECAM / NTSC)
(4) Remote control unit
4.4 ADJUSTMENT ITEMS
CHECK ITEM
• B1 VOLTAGE check
• HIGH VOLTAGE check
• IF VCO check
FOCUS
• FOCUS adjustment
DEFLECTION CIRCUIT.
• V. POSITION adjustment
• V. SIZE adjustment
• H. POSITION adjustment
• H. SIZE adjustment
• SIDE-PIN adjustment
• TRAPEZIUM adjustment
• UPPER/LOWER CORNER PIN adjustment
• PARALLELOGRAM(TILT) adjustment
• BOW adjustment
Preset value
• V. S-SHAPE CORRECTION & V.LINEARITY adjustment
STANDARD
VIDEO CIRCUIT
• WHITE BALANCE adjustment
Centre
• SUB BRIGHT adjustment
NORMAL
• SUB CONTRAST adjustment
AUTO
• SUB COLOUR adjustment
• SUB HUE adjustment
Centre
• COLOUR DECODER VCO adjustment
OFF
VSM PRESET SETTING
REGULAR
• VSM PRESET setting
OFF
(No.YA366)1-13