![](/images/new-backgrounds/1311558/31155867x1.webp)
MODELS:
[Cb, Cr Circuit] | Purpose: | To match the match grays between color and monochrome | ||||
13. Cb, Cr Offset | Symptom: | pictures. | ||||
Grays have a color tint. | ||||||
|
|
|
|
|
|
|
Measuring |
| 1. | Supply an NTSC White Raster with 25% luminance. | |||
Instrument |
| |||||
|
| |||||
Test Point |
| 2. | Activate the Service Mode, VCJ Function. | |||
| 3. | Set the data for item “30 COLH” to 63. | ||||
|
|
|
| |||
Ext. Trigger |
| 4. | Adjust items “23 CBOF” and “24 CROF” for optimum gray. | |||
|
|
|
| 5. | Set the data for item “30 COLH” back to 31. | |
Measuring |
| |||||
| 6. | Save the data and exit the Service Mode. | ||||
Range |
| |||||
|
|
|
|
| ||
Input Signal | White Raster @ 25% |
|
|
| ||
|
|
|
|
|
|
|
Input Terminal | NTSC Input |
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
| |
| SERVICE MODE |
|
|
|
| |
| Activate …….. |
|
|
|
| |
| Function …...………..AUDIO |
|
|
|
| |
| Item No. ……….…….VIDEO |
|
|
|
| |
| Adjust Data ….…….ADJUST |
|
|
|
| |
| Save Data …. ………ENTER |
|
|
|
| |
| Exit …………..MENU (twice) |
|
|
|
| |
|
|
|
|
|
|
|
[On Screen Display Circuit] | Purpose: | To position the |
14. Character Position | Symptom: |
|
Measuring | ||
Instrument |
| |
Test Point | ||
Ext. Trigger | ||
Measuring | ||
Range | ||
| ||
Input Signal | Monoscope |
1.Supply a Monoscope signal to the Video or RF Input.
2.Select the Monoscope as the source for the main picture (Input button).
3.Activate the Service Mode, HR Function.
4.Use the Adjust Right/Left buttons to center the display horizontally. (A = B)
5.Save data and exit the Service Mode.
Input Terminal RF or Video
SERVICE MODE Activate …….. MENU-0-1-5-7
Function …...………..AUDIO
Item No. ……….…….VIDEO
Adjust Data ….…….ADJUST
Save Data …. ………ENTER
Exit …………..MENU (twice)
Page 34