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4-3-5. CHECKING AFTER ADJUSTMENT
1) Play the alignment tape (VHJ-0119) and check that
the envelope waveform is activated immediately and
that there are no fluctuations in the envelope wave-
form.
2) Load a cassette tape (ST-180) and use it to record and
replay. Check that the envelope waveform is acti-
vated immediately and that there are no fluctuations
in the envelope waveform. Use a scratch-free cas-
sette tape (ST-180). Check that at the tracking centre,
the front half down and back half down are not more
than 20% of the value at the point where the envelope
waveform amplitude is at its maximum.
3) Check that the envelope waveform is activated
immediately when you switch from PLAY to REVIEW
or from REVIEW to PLAY. Check that there is no slack
in the tape next to the pinch roller.
4) Check that the envelope waveform is activated
immediately when you switch to PLAY from FF, REW,
CUE, REVIEW or STOP mode. Check that there is no
slack in the tape next to the pinch roller.
5) Check that the tape is not curling or riding up on the
upper or lower flanges of the tape guides in PLAY, FF,
REW, CUE or REVIEW modes.
6) Check that in PLAY mode, the tape runs as shown in
Fig.4-3-7.
S tape guide
No.0 tape
guide
Full erase
BT post
head
Cylinder
S guide
(drum)
roller
Audio R/P head assembly
(ACE head)
T tape guide
T guide roller
Pinch roller
–31–
Loading guide
post
Capstan shaft
Fig.4-3-7
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