Service manual

ELECTRICAL ADJUSTMENTS
D2-3
2-11: HORIZONTAL SIZE
NOTE: Adjust after performing adjustments in section 2-10.
Measurement Equipment Maker: SHIBASOKU Co. Limited
Measurement Equipment Model No.:
DIGITAL TEST PATTERN
GENERATOR 588
1.
2.
(Simple Adjustments)
1.
2.
3.
Receive the monoscope pattern.
Adjust the VR401 until the SHIFT quantity of the OVER
SCAN on right and left becomes 8 ± 2%.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (6) on the remote control to
select "TEST PATTERN". The Fig. 2-5 appears on the
display.
Press the channel button (6) on the remote control to
select "CROSS (60)".
Adjust the VR401 until the right vertical line of the
pattern becomes fit to the right end.
Fig. 2-5
1. EXTERNAL
2. BLACK
3. WHITE (100)
4. WHITE (60)
5. CROSS (100)
6. CROSS (60)
7.
8. 0. RETURN
"The adjustment items 1, 2, 3, 4 and 5 are not used
for this model."
2-12: VERTICAL LINEARITY
NOTE: Adjust after performing adjustments in section 2-11.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Receive the cross hatch signal from the Pattern
Generator.
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (1) on the remote control to
select "H/V". The Fig. 2-4 appears on the display.
Press the channel button (5) on the remote control to
select "V. LIN 50/60".
Check if the step No. of VERTICAL POSITION is "31".
Adjust the VR404 until the SHIFT quantity of the OVER
SCAN on upside and downside becomes minimum.
Receive the cross hatch signal of NTSC. (Audio Video
Input)
Press the AV button on the remote control to set to the
AV mode.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (1) on the remote control to
select "H/V". The Fig. 2-4 appears on the display.
Press the channel button (5) on the remote control to
select "V. LIN 50/60".
Press the PLAY or STOP button on the remote control
until the SHIFT quantity of the OVER SCAN on upside
and downside becomes minimum.
2-13: VERTICAL POSITION
NOTE: Adjust after performing adjustments in section 2-12.
1.
2.
3.
4.
5.
6.
7.
8.
Receive the center cross signal from the Pattern
Generator.
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (1) on the remote control to
select "H/V". The Fig. 2-4 appears on the display.
Press the channel button (4) on the remote control to
select "V. POSI 50/60".
Check if the step No. of VERTICAL POSITION is "63".
Adjust the VR403 until the horizontal line becomes fit to
the notch of the shadow mask.
Receive the center cross signal of NTSC. (Audio Video
Input)
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~5.
2-14: VERTICAL SIZE
NOTE: Adjust after performing adjustments in section 2-13.
1.
2.
3.
4.
5.
6.
7.
8.
Receive the cross hatch signal from the Pattern
Generator.
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (1) on the remote control to
select "H/V". The Fig. 2-4 appears on the display.
Press the channel button (3) on the remote control to
select "V. SIZE 50/60".
Press the PLAY or STOP button on the remote control
until the rectangle on the center of the screen becomes
square.
Receive a broadcast and check if the picture is normal.
Receive the cross hatch signal of NTSC. (Audio Video
Input)
Press the AV button on the remote control to set to the
AV mode. Then perform the above adjustments 2~5.
2-15: OSD HORIZONTAL
1.
2.
3.
4.
[ TV ]
OSD H
AB
Fig. 2-6
Using the remote control, set the brightness and
contrast to normal position.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (5) on the remote control to
select "OTHERS". The Fig. 2-2 appears on the display.
Press the channel button (4) on the remote control to
select "OSD H".
Press the PLAY or STOP button on the remote control
until the difference of A and B becomes minimum.
(Refer to Fig. 2-6)