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9. 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
M. EQ.
Pattern
---
Generator
Note: Focus VR (FBT) --- Main 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 monoscope pattern.
4. Adjust the Focus Control on the FBT to obtain a
clear picture.
All manuals and user guides at all-guides.com
10. H f
Purpose: To get correct horizontal frequency.
Symptom of Misadjustment: If H f
incorrect, skew distortion will appear on the screen.
Mode
Input
Mono-
RF
scope
Spec.
See below
Note: R1583 --- Main CBA
1. Connect frequency counter to R1583 and ground.
2. Set the unit to the VIDEO mode which is located
3. Operate the unit for at least 20 minutes.
4. Press "2" button on the Service remote control unit
5. Press "CH. o / p" buttons on the Service remote
6. Turn the power off and on again, using the main
1-6-5
Adjustment
0
Test Point
Adj. Point
CH. o / p button
R1583
["H-ADJ"] MODE
Tape
M. EQ.
Frequency
---
Counter
Use Service remote control unit.
before CH2 and no input is necessary. Enter the
Service mode. (See page 1-6-1.)
and select H-ADJ mode.
control unit so that the display will change "0" ~ "7."
At this moment, choose display "0" ~ "7" when the
frequency counter display is closest to 15.734
kHz±300Hz.
power button on the TV unit.
adjustment is
0
Mode
Input
Video
---
Spec.
15.734kHz±300Hz
T8201EA
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