Symphonic WF719 Service Manual page 26

Notes: Screen Control FBT --- H.V. CBA
FBT= Fly Back Transformer
Use the Remote Control Unit
1. Degauss the CRT and allow CRT to operate for 20
minutes before starting the alignment.
2. Input the Black raster signal from EXT. input.
3. Enter the Service mode. (See page 1-8-1.)
4. Press the "VOL p" button.
(Press "VOL p" then display will change CUT OFF/
DRIVE, 7Fh adjustment and DVD-KEY).
5. Choose CUT OFF/DRIVE mode then press "1" but-
ton. This adjustment mode is CUT OFF (R).
6. Increase the screen control so that the horizontal
line just appears on the CRT.
7. Press the "CH o / p" button until the horizontal line
becomes white.
8. Choose CUT OFF/DRIVE mode then press "2" but-
ton. This adjustment mode is CUT OFF (G). Press
"CH o / p" until the horizontal line becomes white.
9. Choose CUT OFF/DRIVE mode then press "3" but-
ton. This adjustment mode is CUT OFF (B). Press
"CH o / p" until the horizontal line becomes white.
10.Choose CUT OFF/DRIVE mode then press "4" but-
ton.
11.Input the White Raster Signal from Video In.
12.Adjust the RED DRIVE as needed with the CH o /
p buttons to get the following value, X= 286, Y=
294.
13.Choose CUT OFF/DRIVE mode then press "5."
Adjust the BLUE DRIVE as needed with the CH o /
p buttons to get the following value, X= 286, Y=
294.
14.Turn the power off and on again.
8. Sub-Brightness Adjustment
Purpose: To get proper brightness.
Symptom of Misadjustment: If Sub-Brightness is
incorrect, proper brightness cannot be obtained by
adjusting the Brightness Control.
Test point Adj. Point
CH o / p
---
Tape
---
Generator
White
Note: SMPTE Setup level --- 7.5 IRE
1. Enter the Service Mode. (See page 1-8-1.)
Then input SMPTE signal from RF input.
2. Press PICTURE button. (Press PICTURE button
then display will change BRT, CNT, COL, TNT, and
V-T). Select BRT and press CH o / p buttons so
that the bar is just visible (See above figure).
3. Turn the power off and on again.
1-8-4
Mode
SMPTE
---
buttons 7.5IRE
M. EQ. Spec.
Pattern
See below
Figure
Black
This bar
just
visible
TD851EA
Input
Fig. 4