7.3.9. 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 P6001 (TV/VCR Main C.B.A.)
or TP49 (CRT C.B.A.)
Adjustment:
SUB CONTRAST (EVR)
Specification:
3.0 V[p-p]±0.1 V[p-p]
Input:
Video Input Jack, Crosshatch Pattern Signal 1 V[p-p] (75
terminated)
Mode:
STOP
Equipment:
Oscilloscope, NTSC Video Pattern Generator
1. Supply a Crosshatch Pattern Signal to the Video Input Jack.
2. Connect the Oscilloscope to Pin 5 of P6001 on the TV/VCR Main
C.B.A. or TP49 on the CRT C.B.A.
3. Select SUB BRIGHT in EVR adjustment mode. Then, after making
a note of the original value, adjust to the (D0).
4. Select SUB CONTRAST in EVR adjustment mode and adjust so
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Содержание QUASAR PV-C2030W
Страница 24: ...6 S 1 6 Screws S 1 6 L 1 6 Locking Tabs L 1 P 1 Spring P 1 E Refer to Notes in chart Fig D2 Fig D3 Fig D4 24 ...
Страница 25: ...Fig D5 25 ...
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 82: ...82 ...
Страница 86: ...11 2 MECHANISM BOTTOM SECTION 86 ...
Страница 87: ...11 3 CASSETTE UP COMPARTMENT SECTION 87 ...
Страница 88: ...11 4 CHASSIS FRAME SECTION 1 A B C D E F G 88 ...
Страница 89: ...11 5 CHASSIS FRAME SECTION 1 H I J K L 89 ...
Страница 90: ...11 6 CHASSIS FRAME SECTION 2 90 ...
Страница 91: ...11 7 PACKING PARTS AND ACCESSORIES SECTION A B C D E F G 91 ...
Страница 92: ...11 8 PACKING PARTS AND ACCESSORIES SECTION H I J K L 92 ...
Страница 113: ...R4021 ERJ6GEYJ473V MGF CHIP 1 10W 47K 113 ...
Страница 115: ...R5515 ERDS2TJ332 3 3K 115 ...
Страница 135: ...R885 ERDS2TJ104 100K 135 ...