MITSUBISHI ELECTRIC VS-60609 - Manual (Page 36)

MODELS: VS-45609 / VS-50609 / VS-55609 / VS-60609 / VS-60719 / VS-70709
Page 36
Purpose:
Measuring
Instrument
Test Point
Measuring
Range
Input Signal
Ext. Trigger
Input Terminal
Symptom:
Purpose:
Measuring
Instrument
Test Point
Measuring
Range
Input Signal
Ext. Trigger
Input Terminal
Symptom:
[Deflection Circuit]
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Monoscope
Video or RF Input
To set the vertical height and linearity.
Incorrect height and/or vertical non-linearity.
1. Supply a Monoscope signal to the Video or RF Input.
2. Activate the Service Mode, VCJ Function.
3. Adjust Item “2 VHT” so the sum of the vertical markers is 4.
4. Adjust Item “4 VLR” so the large Monoscope circle is round.
5. Save the data and exit the Service Mode.
16. Height and Vert. Linearity
SERVICE MODE
Activate …….. MENU-0-1-5-7
Function …...………..AUDIO
Item No. ……….…….VIDEO
Adjust Data ….…….ADJUST
Save Data …. ………ENTER
Exit …………..MENU (twice)
[Convergence Circuit]
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Monoscope/Crosshatch
Video or RF Input
Converge red, green and blue at the screen center.
Color edging over most of the picture.
Note: If not correct, preset Vertical Linearity, Service Mode, VCJ Function, Item
“4 VLIN”.
Preliminary:
Degauss the shield cover and bracket unit of the CRT assembly and chassis sheet
metal. Do Not degauss the CPM Assemblies.
Centering and Static Convergence
1. Supply a Monoscope signal to the Video or RF Input.
2. Enter the Coarse Convergence Mode
3. Press “2” (green Monoscope is displayed)
3. Press “7” (removes HSTA and VSTA drive from the Convergence circuit).
4. Use the Green Centering Magnet to center the green monoscope on the screen.
6. Rotate the Green Yoke to correct any tilt.
7. Exit the Convergence Mode.
Note: If the green raster centering shifts when exiting the Convergence Mode,
use Coarse Green Items “1 HSTA” and “2 VSTA” to correct centering.
8. Supply an External Crosshatch Pattern
9. Use the Red Centering Magnet to
converge the red crosshatch on the
green at the center of the screen, and
remove any red tilt by rotating the Red
Yoke.
10. Repeat Step 9 for the blue crosshatch,
using the Blue Centering Magnet and
Blue Yoke.
17. Static Convergence
CONVERGENCE MODE
Activate ……..MENU-0-1-5-9
Misc. ……………….……"6"
Coarse………………..…."5"
Fine ……………………..."4"
Color (R,G B or DF)...AUDIO
Item No………….…..VIDEO
Adjust/Move……….ADJUST
Cursor Toggle….…..ENTER
Save & Exit…..MENU (twice)