Magnavox 19MDTR20 Service Manual page 17

12.Set the color analyzer to the CHROMA mode and
after zero point calibration, bring the optical recep-
tor to the center on the tube surface (CRT).
13.Adjust the RED DRIVE as needed with the CH o /
p buttons to get the following value, X= 286, Y=
294.
14.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.
15.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.
Adj. Point
CH o / p
buttons
M. EQ.
Pattern Generator
Figure
White
Note: SMPTE Setup level --- 7.5 IRE
1. Enter the Service mode. (See page 1-4-1.)
Then input SMPTE signal from RF input.
2. Press "PICTURE" button. (Press "PICTURE" but-
ton then display will change B R T, C N T, COL, T N
T and V-T ). Select BRT and press "CH o / p" but-
tons so that the bar is just visible (See above fig-
ure).
3. Turn the power off and on again.
9. Focus Adjustment
Purpose: Set the optimum Focus.
Symptom of Misadjustment: If Focus Adjustment is
incorrect, blurred images are shown on the display.
Notes: Focus VR (FBT) --- H.V. CBA
1. Operate the unit more than 30 minutes.
2. Face the unit to the East and degauss the CRT
3. Input the monoscope pattern.
Input
4. Adjust the Focus Control on the FBT to obtain a
SMPTE 7.5IRE
10. SIF Adjustment
Spec.
Purpose: To set the SIF (Sound Intermediate Fre-
quency).
See below
Symptom of Misadjustment: Audio may not sound
correctly.
Note: This adjustment automatically done by the
chrominance IC (IC1301).
11. CCS Text Box Location
Black
Note: This adjustment automatically done by the
microcomputer.
This bar
just
visible
Fig. 4
1-4-4
Adj. Point
Focus Control
M. EQ.
Pattern Generator
FBT= Fly Back Transformer
using a degaussing coil.
clear picture.
Input
Monoscope
Spec.
See below.
TD857EA