Dual Trace Oscilloscope
VHS Alignment Tape (VFMS0003H6)
Post Adjustment Driver (VFK0329)
H-Position Adjustment Driver (VFK0330)
7.2.2.2.1. ENVELOPE OUTPUT ADJUSTMENT
The height of the P2 and P3 Posts replacement part is preadjust at the factory.
Purpose:
To achieve a satisfactory picture and secure precise tracking.
Symptom of Misadjustment:
If the envelope is output poorly, much noise will appear in the
picture. Then the tracking will lose precision and the playback
picture will be distorted by any slight variation of the tracking
control circuit.
Equipment Required:
Post Adjustment Driver (VFK0329)
1. Place a jumper between TP6003 and +5 V(TP6009) on the TV/VCR
Main C.B.A. to defeat Auto Tracking.
2. Eject the tape and insert it again to access the Neutral Tracking
position.
3. Play back the alignment tape.
4. Connect the oscilloscope to TP3002 on the Video Signal Process
Section of the TV/VCR Main C.B.A. Use TP6205 as a trigger.
5. Confirm that the RF envelope is flat enough (V1/V-max. is 0.7 or
more). If not, with Post Adjustment Driver, adjust P2 and P3 post
height so that the envelope waveform becomes as flat (V1/V-max.
is 0.7 or more) as possible (No envelope drop). If the envelope
drop appears on the left-half of the waveform, adjust P2 post
height. If the envelope drop appears on the right-half of the
waveform, adjust P3 post height.
CAUTION:
Overtightening P2 and P3 posts may cause the threads to strip.
Note:
It will be possible to confirm Step 5 according to following steps.
1. Press the Tracking Control Up or Down button on remote control.
Make sure that the envelope waveform remains flat. If not, readjust
47
Содержание PV-C1323A
Страница 26: ...6 1 2 Disassembly Method Fig D2 22 ...
Страница 27: ...Fig D3 23 ...
Страница 28: ...6 1 2 1 Notes in chart 1 Removal of VCR Unit Fig D4 24 ...
Страница 32: ...6 2 2 Inner Parts Location Fig J1 1 28 ...
Страница 33: ...6 2 3 EJECT Position Confirmation Fig J1 2 29 ...
Страница 34: ...6 2 4 Full Erase Head and Cylinder Unit Fig J2 30 ...
Страница 74: ...70 ...
Страница 77: ...11 2 MECHANISM BOTTOM SECTION 73 ...
Страница 78: ...11 3 CASSETTE UP COMPARTMENT SECTION 74 ...
Страница 79: ...11 4 CHASSIS FRAME SECTION 1 75 ...
Страница 80: ...11 5 CHASSIS FRAME SECTION 2 76 ...
Страница 81: ...11 6 PACKING PARTS AND ACCESSORIES SECTION 77 ...
Страница 88: ...123 LSSQ0278 INFRARED REMOTE CONTROL UNIT F 6 84 ...
Страница 98: ...R559 ERDS2TJ123 CARBON 1 4W 12K F G 94 ...
Страница 101: ...R4523 ERJ6GEY0R00V MGF CHIP 1 10W 0 97 ...
Страница 103: ...R6015 ERJ6GEYJ101V MGF CHIP 1 10W 100 99 ...
Страница 109: ...C3056 ECJ2VF1E104Z C CHIP 25V 0 1UF 105 ...
Страница 125: ...R5504 ERJ6GEYJ101V MGF CHIP 1 10W 100 121 ...
Страница 127: ...R6054 ERJ6GEYJ102V MGF CHIP 1 10W 1K 123 ...
Страница 134: ...C3056 ECJ2VF1E104Z C CHIP 25V 0 1UF 130 ...