2. Connect the channel-1 scope probe to TP3001 and the channel-2
scope probe to TP6205. Used TP6205 as a trigger.
3. Adjust value so that the trailing edge of the head switching pulse
is placed 6H±1H (0.38 ms±0.06 ms) before the start of the vertical
sync pulse.
4. Release EVR PG Shifter Adjustment Mode.
The adjusted value will be written to Memory IC (IC6004).
Fig. E6
7.3.12. SUB CONTRAST ADJUSTMENT
Purpose:
To set the optimum sub contrast level.
Symptom of Misadjustment:
The picture is too dark or too light.
Test Point:
Pin 5 of P8001 (TV PROCESS C.B.A.)
or TP49 (CRT C.B.A.)
Adjustment:
SUB CONTRAST (EVR),
R-SUB CONTRAST (EVR)
Specification:
3.0 V[p-p]±0.1 V[p-p]
Input:
Antenna Input Terminal,
Crosshatch Pattern Signal 1 V[p-p]
(75 terminated)
66
Summary of Contents for OmniVision PV-C2780-K
Page 8: ...Fig 1 3 Fig 1 4 8 ...
Page 26: ...Fig D5 6 1 2 1 Notes in chart 26 ...
Page 29: ...6 2 2 Inner Parts Location Fig J1 1 29 ...
Page 30: ...6 2 3 EJECT Position Confirmation Fig J1 2 30 ...
Page 31: ...6 2 4 Grounding Plate Unit Full Erase Head and Cylinder Unit Fig J2 1 31 ...
Page 44: ...6 3 CASSETTE UP ASS Y SECTION 6 3 1 Top Plate Wiper Arm Unit and Holder Unit Fig K1 1 44 ...
Page 81: ...81 ...
Page 85: ...11 2 MECHANISM BOTTOM SECTION 85 ...
Page 86: ...11 3 CASSETTE UP COMPARTMENT SECTION 86 ...
Page 87: ...11 4 CHASSIS FRAME SECTION 1 87 ...
Page 88: ...11 5 CHASSIS FRAME SECTION 2 88 ...
Page 89: ...11 6 PACKING PARTS AND ACCESSORIES SECTION 89 ...