Toshiba 20A43 Посібник з експлуатації - Сторінка 14

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Toshiba 20A43 Посібник з експлуатації
2-6: VERTICAL SHIFT
1.
Receive the monoscope pattern.
2.
Using the remote control, set the brightness and contrast
to normal position.
3.
Check if the step No. of V. SHIFT is "02".
4.
Adjust the VR401 until the horizontal line becomes fit to
the notch of the shadow mask.
2-7: VERTICAL SIZE
1.
Receive the monoscope pattern.
2.
Using the remote control, set the brightness and contrast
to normal position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (06) on the remote control to
select "V. SIZE".
4.
Press the VOL. UP/DOWN button on the remote control
until the SHIFT quantity of the OVER SCAN on upside and
downside becomes 10 ± 2%.
2-8: VERTICAL LINEARITY
NOTE: Adjust after performing adjustments in section 2-7.
After the adjustment of Vertical Linearity, reconfirm
the Vertical Shift and Vertical Size adjustments.
1.
Receive the monoscope pattern.
2.
Using the remote control, set the brightness and contrast
to normal position.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (08) on the remote control to
select "V. LIN".
4.
Adjust the VR402 until the SHIFT quantity of the OVER
SCAN on upside and downside becomes minimum.
2-9: LEVEL
1.
Receive the monoscope pattern (70dB).
2.
Connect the AC voltmeter to pin 6 of CP601.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (25) on the remote control to
select "LEVEL".
4.
Press the VOL. UP/DOWN button on the remote
control until the AC voltmeter is 75 ± 1mV.
2-10: OSD HORIZONTAL
1.
Activate the adjustment mode display of Fig. 1-1.
2.
Press the VOL. UP/DOWN button on the remote control
until the difference of A and B becomes minimum.
(Refer to Fig. 2-1)
00 OSD
A
ELECTRICAL ADJUSTMENTS
TV
17
B
Fig. 2-1
2-11: SEPARATION 1, 2
Please do the method (1) or method (2) adjustment.
Method (1)
1.
Set the multi-sound signal generator for each different
L-ch and R-ch frequency (Ex. L-ch=2KHz, R-ch=400Hz)
and receive the RF.
2.
Connect the oscilloscope to the Audio Out Jack.
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (26) on the remote control to
select "SEP 1".
4.
Press the VOL. UP/DOWN button on the remote control
to adjust it until the audio output wave becomes a fine
sine wave.
5.
Press the CH UP button once the set to "SEP 2" mode.
Then perform the above adjustment 4.
Method (2)
1.
Set the multi-sound signal generator L-ch=1KHz, R-ch
=Non input and receive the RF.
Connect the oscilloscope to the Audio Out Jack (R-ch).
2.
3.
Press the AUDIO SELECT button on the remote control
to set to the stereo mode.
Activate the adjustment mode display of Fig. 1-1 and
4.
press the channel button (26) on the remote control to
select "SEP 1".
5.
Press the VOL. UP/DOWN button on the remote control
to adjust it until the R-ch output becomes minimum.
Set the multi-sound signal generator L-ch=Non input,
6.
R-ch=1KHz and receive the RF.
Connect the oscilloscope to the Audio Out Jack (L-ch).
7.
8.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (27) on the remote control to
select "SEP 2".
9.
Press the VOL. UP/DOWN button on the remote control
to adjust it until the L-ch output becomes minimum.
2-12: BRIGHTNESS
1.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (13) on the remote control to
select "BRI CENT".
2.
Press the VOL. UP/DOWN button on the remote
control until the brightness step No. becomes "130".
3.
Receive a broadcast and check if the picture is normal.
4.
Press the TV/VIDEO button on the remote control to set
to the AV mode. Then perform the above adjustments
1~3.
2-13: SUB CONTRAST
1.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (17) on the remote control to
select "CONT. MAX".
2.
Press the VOL. UP/DOWN button on the remote control
until the contrast step No. becomes "100".
3.
Receive a broadcast and check if the picture is normal.
4.
Press the TV/VIDEO button on the remote control to set
to the AV mode. Then perform the above adjustments
1~3.
D-2