Panasonic AJ-YA120AG, Service Manual

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MECH-14
1-22. Envelope Confirmation on
REV/REW/FF mode
TP
TP105: A PROC Board (Slot 2)
TP5: A PROC Board (Slot 2)
MODE
REV, REW, FF
TAPE
VFM3580KM or VFM3580KL
M. EQ
Oscilloscope
SPEC.
Waveform should be Diamond Style.
All the peak level should be more than 90%
of maximum level.
V/V max
≥
0.9
1. Confirm that the envelope in REV, REW and FF
mode is as follows:
•
Waveform must be diamond shape.
•
All peak levels must be more than 90% of
maximum level.
V/V max
≥
0.9
2. If it is out of specification, adjust S3 post height.
(Refer to the paragraph “1-2. Post Height
Pre-Adjustment”.)
Figure 1-22-1
1-23. Envelope Start Confirmation
TP
TP105: A PROC Board (Slot 2)
TP5: A PROC Board (Slot 2)
MODE
REW/REV
→
PLAY, FF
→
PLAY
Loading completion
→
PLAY,
TAPE
Beg. of L-Cassette (123 min., Recorded)
M. EQ
Oscilloscope
SPEC.
Envelope comes immediately
This adjustment must be done after “Envelope
Waveform Adjustment”.
1. Confirm that the envelope comes immediately,
when the mode switches from REW to PLAY, REV
to PLAY, FF to PLAY and Lording to PLAY and
STBY OFF to PLAY mode.
2. If it is out of specification, adjust the post height of
the S3 post. (Refer to the paragraph “1-2. Post
Height Pre-Adjustment”.)
Figure 1-23-1