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High Voltage Adjustment - NEC PG-2740 Service Manual

Color data monitor

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1. Power Supply Check
2. Horizontal Oscillation Adjustment
2-1. Horizontal adjustment I (DEF SUB PWB single adjustment)
2- 2. Horizontal adjustment II (RGB PWB single adjustment)
3. Vertical Oscillation Adjustment
3- 1. Vertical adjustment I
3- 2. Vertical adjustment II (RGB PWB single adjustment)

4. High Voltage Adjustment

4- 1. Adjustment of High Tension (Adjustment of DEF SUB DEF/HV PWB unit)
4- 2. Adjustment of high-tension protector (DEF SUB DEF/HV PWB unit)
5. Video Chroma Circuit Adjustment
5- 1. PAL Comb Filter Adjustment
5-2. Sub Bright and Sub-Contrast Adjustments
5-3. PAL Matrix Adjustment
5-4. Auto Phase Control Adjustment
6. Horizontal Width Adjustment
7. Vertical Linearity Adjustment
8. Vertical Height Adjustment
9. Side Pin Cushion Adjustment
10. Keystone Adjustment
11. Image Tilt Correction
12. White Balance Procedure
13. Audio Circuit Adjustment
14. Raster D/A Control Setting
15. Video D/A Control Setting
16. Dynamic Focus Waveform Adjutment
17. Focus Adjustment
18. High-Voltage Protector Circuit Operation Verification
15

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