Magnavox 19MDTR20 Service Manual page 310

10. 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]
---
buttons
Tape M. EQ.
Pattern
---
Generator
White
Note: SMPTE Setup level --- 7.5 IRE
1. Enter the Service mode. (See page 1-7-1.)
Then input SMPTE signal from RF input.
2. Press [PICTURE] button. (Press [PICTURE]
button then display will change BRT, CNT, COL,
TNT, V-TNT, and SHP). Select BRT and press
[CH. o / p] buttons so that the bar is just visible
(See above figure).
Mode Input
SMPTE
---
7.5IRE
Spec.
See below
Figure
Black
This bar
just
visible
Fig. 7
11. Focus Adjustment
Purpose: Set the optimum Focus.
Symptom of Misadjustment: If Focus Adjustment is
incorrect, blurred images are shown on the display.
Test Point Adj. Point
--- Focus Control
Tape
--- Pattern Generator
Note: Focus VR --- 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.
12. H. Position Adjustment
Purpose: To obtain correct horizontal position of
screen image.
Symptom of Misadjustment: H. position may not be
properly displayed.
Test Point Adj. Point
[CH. o / p]
---
Tape
--- Pattern Generator
1. Enter the Service mode. (See page 1-7-1.)
Press [8] button on the remote control unit and
select H-P mode.
2. Input monoscope pattern.
3. Press [CH. o / p] buttons on the remote control
unit so that the left and right side of the
monoscope pattern are equal to each other.
1-7-7
Mode
--- Monoscope
M. EQ. Spec.
See below
Mode
--- Monoscope
buttons
M. EQ. Spec.
---
T0102MCEA
Input
Input