MODELS:
[Defl/Conv Circuits] | Purpose: | To preset data values controlling raster geometry. | |||||||
15. Geometry Preset | Symptom: | Raster Distortion | |||||||
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Measuring |
| Note: This procedure us usually only necessary if: | |||||||
Instrument |
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Test Point |
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| • An E2PROM is replaced in the Control or Convergence circuits. | ||||||
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| • E2RESET or Convergence Reset has been activated. | |||||||
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Ext. Trigger |
| Deflection Circuit | |||||||
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Measuring |
| 1. | Supply NTSC Video signal to the Video or RF Input. | ||||||
Range |
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| 2. | Select the NTSC signal as the source (Input button). | |||||
Input Signal |
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NTSC RF or Video | 3. | Enter the Service Mode, VCJ Function. | |||||||
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| 4. | Insure all data values correspond to those in the VCJ Table shown in Table 1. | ||||
Input Terminal | Video or RF Input | ||||||||
5. | Save the data and exit the Service Mode. | ||||||||
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| SERVICE MODE |
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| CONVERGENCE MODE |
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| Activate …….. |
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| Activate |
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| Function …...………..AUDIO |
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| Misc. ……………….……"6" |
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| Item No. ……….…….VIDEO |
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| Coarse………………..…."5" |
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| Adjust Data ….…….ADJUST |
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| Fine ……………………..."4" |
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| Save Data …. ………ENTER |
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| Color (R,G B or DF)...AUDIO |
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| Exit …………..MENU (twice) |
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| Item No………….…..VIDEO |
| Convergence Circuit | ||||||
| Adjust/Move……….ADJUST |
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| 1. | Enter the Convergence Coarse Mode. | ||||||
| Cursor Toggle….…..ENTER |
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| 2. | Set the data in Red, Green and Blue Coarse Convergence Functions to the | ||||||
| Save & Exit…..MENU (twice) |
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| data values given in Tables 2, 3 and 4. | ||||||
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| 3. | Exit the Convergence Mode. |
VCJ Function
Item | Abbr. | Data |
2 | VHGT | 31 |
3 | SCOR | 7 |
4 | VLIN | 7 |
51 | VPOS | 31 |
55 | HPOS | 34 |
| Table 1 |
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CONV RED
Item | Abbr. | Data |
1 | HSTA* | 100 |
2 | VSTA* | 0 |
3 | SKEW | 0 |
4 | TILT | 0 |
5 | HLIN | |
6 | HWID | |
7 | VKEY | |
8 | VWID | 0 |
9 | VLIN | 0 |
10 | TPBC | 0 |
11 | SDBW | 80 |
*Data should not exceed ±100 Table 3
CONV GREEN
Item | Abbr. | Data |
1 | HSTA* | 0 |
2 | VSTA* | 0 |
3 | SKEW | 0 |
4 | TILT | 0 |
5 | HWID | 30 |
6 | HLIN | 0 |
7 | SPCC | |
8 | HKEY | 30 |
9 | TBPC | |
10 | VKEY | |
11 | VWID | 0 |
12 | VLIN | 0 |
*Data should not exceed ±100 Table 2
CONV BLUE
Item | Abbr. | Data |
1 | HSTA* | |
2 | VSTA* | 0 |
3 | SKEW | 0 |
4 | TILT | 0 |
5 | HLIN | 280 |
6 | HWID | |
7 | VKEY | 150 |
8 | VWID | 0 |
9 | VLIN | 0 |
10 | TPBC | 0 |
11 | SDBW |
*Data should not exceed ±100 Table 4
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