Magnavox CT202MW8, Руководство по обслуживанию, Страница: 27 / 89

1-7-6 P7753EA
10. V. Position Adjustment
Purpose: To obtain correct vertical position of screen
image.
Symptom of Misadjustment: If V. position is
incorrect, vertical position of image on the screen may
not be properly displayed.
1. Operate the unit for at least 20 minutes.
2. Enter the Service mode in TV mode.
3. Press [9] button on the service remote control unit
and select "V-P" mode. (Display changes "V-S" and
"V-P" cyclically when [9] button is pressed.)
4. Input monoscope pattern.
5. Press [CH.
o
/
p
] buttons on the service remote
control unit so that the top and bottom of the
monoscope pattern are equal each other.
11. V. Size Adjustment
Purpose: To obtain correct vertical height of screen
image.
Symptom of Misadjustment: If V. Size is incorrect,
vertical height of image on the screen may not be
properly displayed.
1. Operate the unit for at least 20 minutes.
2. Enter the Service mode in TV mode.
3. Press [9] button on the service remote control unit
and select V-S mode. (Display changes "V-S" and
"V-P" cyclically when [9] button is pressed.)
4. Input monoscope pattern.
5. Press [CH.
o
/
p
] buttons on the remote control
unit so that the monoscope pattern is 90
±
5% of
display size and the circle is round.
12. Head Switching Position
Adjustment
Purpose: Determine the Head Switching Position
during Playback.
Symptom of Misadjustment: May cause Head
Switching Noise or Vertical Jitter in the picture.
Note: Unit reads Head Switching Position
automatically and displays it on the screen (Upper Left
Corner).
1. Playback test tape (VFMS0001H6).
2. Enter the Service mode in TV mode.
3. Press [5] button on the service remote control unit.
4. The Head Switching position will display on the
screen; if adjustment is necessary follow step 4.
6.5H(412.7
µ
s) is preferable.
5. Press [CH.
o
/
p
] buttons on the service remote
control unit if necessary. The value will be
changed in 0.5H steps up or down. Adjustable
range is up to 9.5H. If the value is beyond
adjustable range, the display will change as:
Lower out of range: 0.0H
Upper out of range: -.-H
Test Point Adj. Point Mode Input
--- [CH.
o
/
p
] buttons --- Monoscope
Tape M. EQ. Spec.
--- Pattern Generator ---
Test Point Adj. Point Mode Input
--- [CH.
o
/
p
] buttons --- Monoscope
Tape M. EQ. Spec.
--- Pattern Generator 90%
±
5%