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Note:
Old type of H-Position Adjustment Driver (VFK0136) can be used for
this adjustment.
7.3. ELECTRICAL ADJUSTMENT
NOTE:
Following Adjustments have been preadjusted at factory and are not required.
- Purity Adjustment
- Static Central Convergence Adjustment
- Dynamic Convergence Adjustment
7.3.1. TEST EQUIPMENT
To do all of these electrical adjustments, the following equipment is required.
1. Dual-Trace Oscilloscope
Voltage Range: 0.001 V to 50 V/Div.
Frequency Range: DC to 50 MHz
Probes: 10:1, 1:1
2. NTSC Video Pattern Generator
3. DVM (Digital Volt Meter)
4. MTS/SAP Signal Generator
(TV Multi-Channel Sound Modulator (U.S.A.))
5. Frequency Counter
Frequency Range: 0 to 150 MHz
6. Plastic Tip Driver and Non-Metal Driver
7. Isolation Transformer (Variable)
8. VHS Alignment Tape (VFMS0003H6)
9. Degaussing Coil
10. White Pattern Generator
11. Audio Generator
7.3.2. HOW TO READ THE ADJUSTMENT PROCEDURES
Fig. E1
56
Содержание OmniVision PV-C2780-K
Страница 8: ...Fig 1 3 Fig 1 4 8 ...
Страница 26: ...Fig D5 6 1 2 1 Notes in chart 26 ...
Страница 29: ...6 2 2 Inner Parts Location Fig J1 1 29 ...
Страница 30: ...6 2 3 EJECT Position Confirmation Fig J1 2 30 ...
Страница 31: ...6 2 4 Grounding Plate Unit Full Erase Head and Cylinder Unit Fig J2 1 31 ...
Страница 33: ...6 2 5 Capstan Belt Support Angle Intermediate Gear B and Main Cam Gear Fig J3 1 6 2 5 1 Reassembly Notes 33 ...
Страница 44: ...6 3 CASSETTE UP ASS Y SECTION 6 3 1 Top Plate Wiper Arm Unit and Holder Unit Fig K1 1 44 ...
Страница 81: ...81 ...
Страница 85: ...11 2 MECHANISM BOTTOM SECTION 85 ...
Страница 86: ...11 3 CASSETTE UP COMPARTMENT SECTION 86 ...
Страница 87: ...11 4 CHASSIS FRAME SECTION 1 87 ...
Страница 88: ...11 5 CHASSIS FRAME SECTION 2 88 ...
Страница 89: ...11 6 PACKING PARTS AND ACCESSORIES SECTION 89 ...