Sylvania 6509DD Service Manual page 23

4. 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.
Test point Adj. Point
CH o / p
---
buttons
Tape M. EQ.
--- Pattern Generator
1. Enter the Service mode. (See page 1-7-1.)
Press "9" button on the remote control unit and
select V-S Mode. (Press "9" button then display will
change to V-P and V-S).
2. Input monoscope pattern.
3. Press "CH o / p" buttons on the remote control
unit so that the monoscope pattern is 90±5% of dis-
play size and the circle is round.
5. V. Position Adjustment
Purpose: To obtain correct vertical width of screen
image.
Symptom of misadjustment: If V. Position is incor-
rect, vertical height of image on the screen may not be
properly displayed.
Test point Adj. Point
Screen Control,
--- CH o / p
buttons
Tape M. EQ.
--- Pattern Generator
Note: Use service remote control unit
1. Operate the unit for at least 20 minutes.
2. Enter the Service Mode. (See page 1-7-1)
3. Receive the Monoscope Pattern.
4. Press "9" button on the service remote control unit
and select "V-P" mode. (Display change "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 top and bottom of the mono-
scope pattern will be equal of each other.
6. Turn the power off and on again, using the main
power button on the TV unit.
Mode Input
--- Monoscope
Spec.
90±5%
Mode Input
RF Monoscope
Spec.
90±5%
1-7-3
6. H. Position Adjustment
Purpose: To obtain correct horizontal position of
screen image.
Symptom of Misadjustment: If H. Position is incor-
rect, horizontal position of image on the screen may
not be properly displayed.
Test Point Adj. Point
CH o / p
--- buttons
[ H-P ] Mode
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 1-7-1)
3. Receive the Monoscope Pattern.
4. Press "8" button on the remote control unit and se-
lect "H-P" mode.
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, using the main
power button on the TV unit.
Mode Input
Mono-
RF
scope
Spec.
90±5%
TD001EA