1-12 (No.YA465)
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 ADJUSTMENT
Unless otherwise specified in the adjustment items, preset the
following functions with the REMOTE CONTROL UNIT.
4.3
MEASURING INSTRUMENT AND FIXTURES
(1) DC voltmeter (or digital voltmeter)
(2) Oscilloscope
(3) HV voltmeter
(4) Signal generator
(Pattern generator : PAL/NTSC)
(5) Remote control unit
4.4
ADJUSTMENT ITEMS
CHECK ITEMS
• B1 VOLTAGE check
• HIGH VOLTAGE check
• IF VCO check
TUNER / IF CIRCUIT
• DELAY POINT (AGC) adjustment
FOCUS
• FOCUS adjustment
DEFLECTION CIRCUIT
• V.SLOPE adjustment
• V.POSITION adjustment
• V.SIZE adjustment
• H.POSITION adjustment
• H.SIZE adjustment
• SIDE PIN adjustment
• TRAPEZIUM adjustment
• V. LINEARITY adjustment
• CORNER adjustment
• H. PARALLEL adjustment
• H.BOW adjustment
VIDEO CIRCUIT
• WHITE BALANCE adjustment
• SUB BRIGHT adjustment
• SUB CONTRAST adjustment
• SUB COLOUR adjustment
• SUB TINT adjustment
VSM PRESET SETTING
• VSM PRESET
PURITY AND CONVERGENCE
• PURITY adjustment
• STATIC CONVERGENCE adjustment
• DYNAMIC CONVERGENCE adjustment
Item
Preset value
PICTURE MODE(VSM)
BRIGHT
VNR
OFF
ECO MODE
OFF
BALANCE Centre
BASS / TREBLE / BALANCE
Centre
CINEMA SURROUND
OFF