Magnavox CT202MW8, Service Manual, Page: 26 / 89

1-7-5 P7753EA
9. Adjust Red and Blue color so that the temperature
becomes 9200K (x: 286 / y: 294) ±3%.
10. At this time, check if horizontal line is white. If not,
adjust Cut-off Adjustment until the horizontal line
becomes pure white.
11. Turn off and on again to return to the normal mode.
Receive APL 100% white signal and confirm that
Chroma temperatures become 9200K (x: 286 / y:
294) ±3%.
Note: Confirm that Cut Off Adj. is correct after this
adjustment, and attempt Cut Off Adj, if needed.
7. 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.
Note: SMPTE Setup level --- 7.5 IRE
1. Enter the Service mode.
Then input SMPTE signal from RF input.
2. Press [PICTURE] button on the service remote
control unit.
3. Press [1] button on the service remote control unit
and selcet “BRT” mode. (Display changes “BRT,”
“CNT,” “COL,” “TNT,” “V-T,” and “SHP” cyclically
when [1] button is pressed.)
4. Press [CH
o
/
p
] buttons so that the bar is just
visible (See above figure).
8. Focus Adjustment
Purpose: Set the optimum Focus.
Symptom of Misadjustment: If Focus Adjustment is
incorrect, blurred images are shown on the display.
Note: Focus Control FBT --- Sub CBA
FBT = Fly Back Transformer
1. Operate the unit more than 30 minutes.
2. Face the unit to the East and degauss the CRT
using a degaussing coil.
3. Input the monoscope pattern.
4. Adjust the focus control on the FBT to obtain a
clear picture.
9. H. Position Adjustment
Purpose: To obtain correct horizontal position of
screen image.
Symptom of Misadjustment: H. position may not be
properly displayed.
1. Operate the unit for at least 20 minutes.
2. Enter the Service mode in TV mode.
3. Press [8] button on the service remote control unit
and select "H-P" mode.
4. Input monoscope pattern.
5. Press [CH.
o
/
p
] buttons on the service remote
control unit so that the left and right side of the
monoscope pattern are equal to each other.
Test Point Adj. Point Mode Input
---
[CH.
o
/
p
]
buttons
RF
SMPTE
7.5IRE
Tape M. EQ. Spec.
---
Pattern
Generator
See below
Figure
Fig. 4
White
Black
This bar
just
visible
Test Point Adj. Point Mode Input
--- Focus Control --- Monoscope
Tape M. EQ. Spec.
--- Pattern Generator See below
Test Point Adj. Point Mode Input
--- [CH.
o
/
p
] buttons --- Monoscope
Tape M. EQ. Spec.
--- Pattern Generator ---