Symptom of Misadjustment:
If the position of the Audio Control Head is not properly adjusted, the
Audio S/N Ratio is poor.
1. Connect the oscilloscope to the audio output jack on the rear side of
the deck.
2. Play back the 6 kHz Monaural Audio portion of the alignment tape.
3. Adjust Black Screw (C) on the Audio Control Head base so that the
output level is at maximum.
Fig. M7
4. Confirm the height of the Audio Control Head is proper. If not, readjust
Black Screws (A) and (B).
7.2.2.3.5. AUDIO CONTROL HEAD HORIZONTAL POSITION ADJUSTMENT
Purpose:
To adjust the Horizontal Position of the Audio Control Head.
Symptom of Misadjustment:
If the Horizontal Position of the Audio Control Head is not properly
adjusted, a maximum envelope cannot be obtained at the Neutral
Position of the Tracking Control Circuit.
1. Insert the alignment tape.
2. Press and hold VCR/TV button and CH DOWN buttons on VCR
together over 5 seconds in power off condition.
The power comes on and the unit goes into service mode.
3. Play back the alignment tape.
4. To enter Tracking center mode, press PLAY button in Play back mode.
"TRACKING CENTER" will be displayed on the TV monitor.
5. Connect the oscilloscope to TP3002 on the Video Signal Process
Section of the Main C.B.A. Use TP6205 as a trigger.
6. Loosen the Black Screw (D) and tighten it slightly. Set the H-Position
Adjustment Driver into the Hole (A). Then slowly turn the fixture either
clockwise or counterclockwise so that the envelope is at maximum.
61
Содержание Quasar Omnivision PV-V4021-K
Страница 9: ...2 Fault indication will be displayed in F I P as shown Fig 2 2 FIg 2 3 9 ...
Страница 13: ...5 1 4 1 3 Service Position 2 2 Model M N Fig 4 2 2 13 ...
Страница 27: ...Fig D2 6 1 2 1 Notes in chart 27 ...
Страница 30: ...Fig D5 2 30 ...
Страница 32: ...32 ...
Страница 33: ...6 2 2 Inner Parts Location Fig J1 1 33 ...
Страница 34: ...34 ...
Страница 36: ...Fig J2 1 2 36 ...
Страница 67: ...11 2 MECHANISM BOTTOM SECTION 67 ...
Страница 68: ...11 3 CASSETTE UP COMPARTMENT SECTION 68 ...
Страница 69: ...11 4 CHASSIS FRAME AND CASING PARTS SECTION Model PVQ V201 PV V4021 PV V4021 K VHQ 401 PV V4511 PV V4521A 69 ...
Страница 70: ... Model PV V4511 PV V4521 PV V4521 K VHQ 451 70 ...
Страница 71: ... Model PV V4611 71 ...
Страница 73: ... Model PV V4611 73 ...
Страница 78: ...12 2 MECHANICAL REPLACEMENT PARTS LIST MECHANICAL REPLACEMENT PARTS 78 ...
Страница 81: ... 81 ...
Страница 88: ... 88 ...
Страница 90: ...90 ...
Страница 95: ...95 ...
Страница 105: ...105 ...
Страница 109: ...109 ...
Страница 145: ...1 2 Schematic Diagram Circuit Board Layout 2 ...