Pin Cushion Adjustment - Sylvania 6427FF Service Manual

13. 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.
14. H. Size Adjustment
Purpose: To obtain correct horizontal size of screen
image.
Symptom of Misadjustment: If H. Size is incorrect,
horizontal size of image on the screen may not be
properly displayed.
Test Point Adj. Point
--- VR562
Tape M. EQ.
--- Monoscope
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
be 90±5% of display size and circle is round.
4. Turn the power off and on again. (Main power
button on the TV unit.)

15. PIN Cushion Adjustment

Purpose: To obtain correct straight vertical line of
screen image.
Symptom of Misadjustment: If H.Pin cushion is
incorrect, vertical line of image on the screen may not
be properly displayed.
Test Point Adj. Point
--- VR561
Tape M. EQ.
--- Cross hatch
Note: Use service remote control unit
1. Operate the unit for at least 20 minutes.
2. Receive the Cross hatch Pattern.
3. Adjust VR561 so that the cross hatch pattern will
be straight line of display.
4. Turn the power off and on again. (Main power
button on the TV unit.)
16. Cut-off Adjustment
Purpose: To adjust the beam current of R, G, B, and
screen voltage.
Symptom of Misadjustment: White color may be
reddish, greenish or bluish.
Mode Input
RF Monoscope
Spec.
90±5%
Note: Screen Control FBT --- Main CBA
1. Degauss the CRT and allow CRT to operate for 20
Mode Input
2. Input the Black Raster Signal from RF Input.
3. Enter the Service mode. (See page 5-1.)
RF Cross hatch
4. Press [VOL p] button on the service remote
Spec.
---
5. Press [2] button. The display will momentarily
5-5
Test Point Adj. Point
Screen-Control
--- [CH o / p]
buttons
Tape M. EQ.
Pattern
---
Generator
Figure
Pattern Generator
Ext. Input
FBT = Fly Back Transformer
Use service remote control unit
minutes before starting the alignment.
control unit and select "C/D" mode. (Display
changes "C/D," "7F," "LANGUAGE," "ACCESS
CODE," "SOUND TYPE," "VIDEO TONE," "FM-
MODE," "V-OUT," "VIDEO," "AV MEMO," "STABLE
SOUND," "FILTER," "500," "YUV MEMORY," "NO
SIG BRT," "A-MUTE POL," and "V-MENU"
cyclically when [VOL p] button is pressed.) then
press "1." The display will momentarily show "CUT
OFF R" (R= Red). Now there should be a
horizontal line across the center of the picture
tube. If needed gradually turn the screen control
on the flyback, clockwise until the horizontal line
appears. Adjust the Red Cut off by pressing [CH o
/ p] buttons. Proceed to Step 5 when the Red Cut
off adjustment is done.
show "CUT OFF G" (G = Green). Adjust the Green
Cut off by pressing [CH o / p] buttons. Proceed to
step 6 when the Green Cut off adjustment is done.
Mode Input
Black
RF
Raster
Spec.
See Reference
Notes below.
Fig. 2
L3800EA