Toshiba 14AF46C Panduan Servis - Halaman 21

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Toshiba 14AF46C Panduan Servis
2-5: HORIZONTAL POSITION
1.
Receive the center cross signal from the Pattern
Generator.
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 (03) on the remote control to
select "H.PHASE".
4.
Press the VOL. UP/DOWN button on the remote
control until the SHIFT quantity of the OVER SCAN on
right and left becomes minimum.
2-6: VERTICAL POSITION
1.
Receive the monoscope pattern.
2.
Using the remote control, set the brightness and contrast
to normal position.
3.
Adjust the VR401 until the horizontal line becomes fit to
the notch of the shadow mask. (Refer to Fig. 2-1)
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 (07) 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 9 ± 2%.
2-8: LEVEL
1.
Connect the AC voltmeter to pin 6 of CP101.
2.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (33) on the remote control to
select "LEVEL".
3.
Press the VOL. UP/DOWN button on the remote control
until the AC voltmeter is 75 ± 2mV.
ELECTRICAL ADJUSTMENTS
horizontal line
Notch
Shadow mask
Fig. 2-1
2-9: SEPARATION 1, 2
1.
Receive the stereo signal (L=2KHz, R=400Hz).
2.
Connect the AC voltmeter to Audio Out Jack though
stereo filter (L=400Hz, R=2KHz).
3.
Activate the adjustment mode display of Fig. 1-1 and
press the channel button (34) on the remote control to
select "SEP1".
4.
Press the VOL. UP/DOWN button on the remote control
until the output of L-CH and R-CH become minimum.
5.
Press the CH UP button once the set to "SEP2" mode.
6.
Press the VOL. UP/DOWN button on the remote control
until the output of L-CH and R-CH become minimum.
7.
Press the CH DOWN button once the set to "SEP1" mode.
8.
Repeat step 4 to step 7 several times.
The output difference of the between with Filter and
without Filter should be more than 25db for both L and R.
2-10: OSD POSITION
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. 2-2)
00 OSD
A
2-11: BRIGHT CENT
1.
Receive the monoscope pattern. (RF Input)
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 (16) on the remote control to
select "BRI. CENT".
4.
Press the VOL. UP/DOWN button on the remote control
until the white 7.5% is starting to be visible.
5.
Receive the monoscope pattern. (Audio Video Input)
6.
Press the TV/VIDEO button on the remote control to set
to the AV mode. Then perform the above
adjustments 2~4.
7.
Press the TV/VIDEO button on the remote control to set
to the CS mode. Then perform the above
adjustments 2~4.
D-2
TV
36
B
Fig. 2-2
14AF46/14AF46C