Sylvania Symphonic ST424FF Service Manual page 18

8. H. Position Adjustment
Purpose: To obtain correct horizontal position of
screen image.
Symptom of Misadjustment: If H. Position is
incorrect, horizontal position of image on the screen
may not be properly displayed.
Test Point Adj. Point
[CH o / p]
---
buttons
Tape M. EQ.
--- Monoscope
Note: Use service remote control unit
1. Operate the unit for at least 20 minutes.
2. Enter the Service mode. (See page 5-1.)
3. Receive the monoscope pattern.
4. Press [8] button on the remote control unit. "H-P"
is indicated.
5. Press [CH o / p] buttons on the service remote
control unit so that the monoscope pattern will be
90±5% of display size and the circle is round.
6. Turn the power off and on again. (Main power
button on the TV unit.)
9. V. Size Adjustment
Purpose: To obtain correct vertical width of screen
image.
Symptom of Misadjustment: If V. Size is incorrect,
vertical size of image on the screen may not be
properly displayed.
Test Point Adj. Point
[CH o / p]
---
buttons
Tape M. EQ.
--- Monoscope
Note: Use service remote control unit.
1. Operate the unit for at least 20 minutes.
2. Enter the Service mode. (See page 5-1.)
3. Receive the monoscope pattern.
4. 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).
5. Press [CH o / p] buttons on the service remote
control unit so that the monoscope pattern will be
90±5% of display size and the circle is round.
6. Turn the power off and on again. (Main power
button on the TV unit.)
10. V. Position Adjustment
Purpose: To obtain correct vertical width of screen
image.
Symptom of misadjustment: If V. Position is
incorrect, vertical height of image on the screen may
not be properly displayed.
Mode Input
RF Monoscope
Spec.
90±5%
Note: Use service remote control unit
1. Operate the unit for at least 20 minutes.
2. Enter the Service mode. (See page 5-1.)
3. Receive the monoscope pattern.
4. Press [9] button on the service remote control unit
5. Press [CH o / p] buttons on the service remote
6. Turn the power off and on again. (Main power
11. Software Reset
To reset software, press [5] button on the remote
control unit for at least 5 seconds after pressing [CH
RETURN] button on the remote control unit.
12. H. Size Adjustment
Mode Input
Purpose: To obtain correct horizontal size of screen
image.
RF Monoscope
Symptom of Misadjustment: If H. Size is incorrect,
horizontal size of image on the screen may not be
Spec.
properly displayed.
90±5%
Note: Use service remote control unit
1. Operate the unit for at least 20 minutes.
2. Receive the Monoscope Pattern.
3. Adjust VR562 so that the monoscope pattern will
4. Turn the power off and on again. (Main power
5-4
Test Point Adj. Point
[CH o / p]
---
buttons
Tape M. EQ.
--- Monoscope
and select "V-P" mode. (Display change "V-S" and
"V-P" cyclically when [9] button is pressed).
control unit so that the top and bottom of the
monoscope pattern will be equal of each other.
button on the TV unit.)
Test Point Adj. Point
--- VR562
Tape M. EQ.
--- Monoscope
be 90±5% of display size and circle is round.
button on the TV unit.)
Mode Input
RF Monoscope
Spec.
See below.
Mode Input
RF Monoscope
Spec.
90±5%
L3420EA