FUNAI SYLVANA 6413TB, Руководство по обслуживанию

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14. Sub-Brightness Adjustment
Purpose: To get proper brightness.
Symptom of Misadjustment: If Sub-Brightness is in-
correct, proper brightness cannot be obtained by adjust-
ing the Brightness Control.
Test Point Adj. Point Mode Input
---
CH
▲
/
▼
buttons
RF IQW
Tape M. EQ. Spec.
--- Pattern Generator See below
Figure
Note: IQW Setup level --- 7.5 IRE
Use Service remote control unit
1. Enter the Service mode. (See page 5-1)
Then input IQW signal from RF Input.
2. Press " MENU " button on the Service remote control unit
and Select " BRT " mode. (Display changes " BRT ", "
CNT ", " CLR ", and " TNT " cyclically when MENU button
is pressed). Press " CH
▲
/
▼
" buttons so that the bar
is just visible (See above figure).
3. Turn the power off and on again. (Main power button
on the TV unit.)
15. 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 Mode Input
--- Focus Control --- Monoscope
Tape M. EQ. Spec.
--- Pattern Generator See below.
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 Degaussing Coil.
3. Input the Monoscope Pattern.
4. Adjust the Focus Control on the FBT to obtain clear
picture.
The following 2 adjustments normally are not at-
tempted in the field. Only when replacing the CRT
then adjust as a preparation.
16. Purity Adjustment
Purpose: To obtain pure color.
Symptom of Misadjustment: If Color Purity Adjust-
ment is incorrect, large areas of color may not be
properly displayed.
Test Point Adj. Point Mode Input
---
Deflection Yoke
Purity Magnet
--- Red Color
Tape M. EQ. Spec.
--- Pattern Generator See below.
Figure
1. Set the unit facing east.
2. Operate the unit for over 30 minutes before adjust-
ing.
3. Fully degauss the unit using an external degaussing
coil.
4. Loosen the screw on the Deflection Yoke Clamper
and pull the Deflection Yoke back away from the
screen. (See Fig. 6)
5. Loosen the Ring Lock and adjust the Purity Magnets
so that a red field is obtained at the center of the
screen. Tighten Ring Lock. (See Fig. 5,6)
6. Slowly push the Deflection Yoke toward bell of CRT
and set it where a uniform red field is obtained.
7. Tighten the clamp screw on the Deflection Yoke.
BLUE
GREEN
RED
Fig. 5
White
This bar
just
visible
Black
Fig. 4
5-6 L1300EA