ELECTRICAL ADJUSTMENTS
3-2: VCO FREE RUN
1.
2.
3.
4.
5.
Connect the DC voltmeter between the pin 6 of CP830
and the pin 1 (GND) of CP830.
Receive an 80dB monoscope signal at the tuner
antenna input (using a VHF channel frequency).
Activate the adjustment mode display of Fig. 3-4 and
press the channel button (2) on the remote control.
Press the VOL.UP/DOWN button on the remote control
until the VCO FREE RUN level becomes 64
±
5 steps.
Adjust L603 until the DC voltmeter is 2.8
±
0.2V.
3-3: RF AGC DELAY
1.
2.
3.
4.
Connect the DC voltmeter between the pin 5 of CP830
and the pin 1 (GND) of CP830.
Receive an 80dB monoscope signal at the tuner
antenna input (using a VHF channel frequency).
Activate the adjustment mode display of Fig. 3-4 and
press the channel button (3) on the remote control.
Press the VOL.UP/DOWN button on the remote control
until the DC voltmeter is 4.0
±
0.2V.
4. BASIC ADJUSTMENTS
4-1:
(TV SECTION)
CUT OFF
Activate the adjustment mode display of Fig. 3-1 and
press the channel button (6) on the remote control.
Adjust the Screen Volume until a dim raster is obtained.
1.
2.
4-2: WHITE BALANCE
NOTE
Adjust after performing adjustments in section 4-1.
Receive the color bar pattern.
Adjust form the adjustment mode display of Fig. 3-2
until the white color of color bar becomes white.
1.
2.
4-3: FOCUS
Receive a monoscope signal sharper than 70dB at the
tuner antenna input.
Adjust the Focus Volume until picture is distinct.
1.
2.
4-4:
1.
2.
3.
4.
Receive the monoscope pattern.
Using the remote control, set brightness to normal
position and set contrast to maximum position.
Activate the adjustment mode display of Fig. 3-1 and
press the channel button (1) on the remote control.
Press the VOL.UP/DOWN button on the remote control
until the right and left screen edges are equal.
HORIZONTAL POSITION
4-5:
1.
2.
3.
4.
VERTICAL POSITION
Receive the monoscope pattern.
Using the remote control, set brightness to normal
position and set contrast to maximum position.
Activate the adjustment mode display of Fig. 3-1 and
press the channel button (2) on the remote control.
Press the VOL.UP/DOWN button on the remote control
until the horizontal line of the monoscope come to
approximate center of the CRT.
4-6: VERTICAL SIZE
1.
2.
3.
4.
Receive the monoscope pattern.
Using the remote control, set brightness to normal
position and set contrast to maximum position.
Activate the adjustment mode display of Fig. 3-1 and
press the channel button (3) on the remote control.
Press the VOL.UP/DOWN button on the remote control
until the horizontal overscan is equal to the vertical
4-7: SUB COLOR, SUB BRIGHT, SUB TINT (TV,AV)
Receive the color bar pattern.(RF Input)
Connect the synchro scope to TP801.
Activate the adjustment mode display of Fig. 3-3 and
press the channel button (4) on the remote control.
Adjust the VOLT RANGE VARIABLE knob of the synchro
scope until the range between white 0% and 100% is
set to 4 scales on the screen of the synchro scope.
Press the VOL.UP/DOWN button on the remote control
until the red color level is adjusted to 4 scales
(100%
±
5%) for the white level.(Refer to Fig. 4-1)
4-7-A:
1.
2.
3.
4.
5.
SUB COLOR (TV)
D2-2
