2. Connect the Oscilloscope to TP49 on the CRT C.B.A.
(Use TP47 for GND.)
3. Select SUB BRIGHT in EVR adjustment mode. Then, after making
a note of the original value, adjust to the (C0).
4. Select SUB CONTRAST in EVR adjustment mode and adjust so
that the level A is (3.0 V[p-p]±0.1 V[p-p]: For model with 20 inch
CRT), or (3.15 V[p-p]±0.1 V[p-p]: For model with 27 inch CRT).
5. Select SUB BRIGHT in EVR adjustment mode and reset to the
original value.
Fig. E3
7.3.8. FOCUS, SCREEN, CUT OFF, DRIVE ADJUSTMENT
Purpose:
To set the optimum Screen.
Symptom of Misadjustment:
The picture is will be an improper screen color mix.
Test Point :
TP50 (CRT C.B.A.)
Adjustment :
FOCUS CONTROL
(Flyback Transformer),
SCREEN CONTROL (Flyback Transformer),
SUB BRIGHT (EVR),
G DRIVE (EVR),
B DRIVE (EVR),
R CUT-OFF (EVR),
G CUT-OFF (EVR),
38
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