Canon Canovision8 E50E Service Manual page 162

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*Note: If the following ratings cannot be obtained, perform the tracking,
tracking fine, No.2 guide and No.7 guide adjustments, respectively.
'qe6-1 Tracking Check (Fig.II-41)
)
qd)
(2)
(3)
Set it to-the track shift mode.
Confirm that the amplitude of RF
envelope is 70% approx.
Confirm that the minimum ampli-
tude (E MIN) is 65% or more of
the maximum (E MAX).
Confirm that the waveform has
no variations.
4-6-2 CUE/REV Waveform Check (Fig.II-42)
(1)
(2)
Playback the alignment tape for
tracking adjustment. Then, set
it to REV mode.
Confirm that the tops between
each waveform remains stable and
equal within 5 sec.
Set it to CUE mode.
Confirm that the tops between
each waveform remains stable and
equal for mor than 5 sec.
4-6-3 Rise Time Check
(1)
= (2)
(3)
Playback the alignment tape for
tracking adjustment.
After ejecting the tape once,
playback it again.
Confirm that the RF envelope
xises horizontally within 2 sec.
Also, check that the tape is not
loosened around the pinch
roller. E
4-6-4 Tape Movement Check (Fig.II-43)
ql)
(2)
Playback the cassette tape hav—
ing 10mm in thickness (P6-120
etc.).
Confirm that the tape at each
guide as indicated in the
Fig.II-44 is not deflected or
curled: (less than 3mm accept-
able).
Set it from PLAY to CUE. Then,
set it from PLAY to REV.
Confirm that the tape at each
guide is not also deflected or
curled. (less than 0.3mm accept-
able).
ag
(4)
(S)
Bo.
EHH 2 6518)
MAX
Fig.II-41
is See al
Fig. II~42
After set it to CUE/REV and FF/
REW, playback it again.
Confirm that the RF envelope
xises within 2 sec. horizon-
tally.
Also, check that the tape is not
loosened around the pinch
roller.
Repeat check procedures from
{2) to (4) again.
0% Guideno.1 Guide
(TG-1)
Tape
i No,
No.4 {Guide Nie 29
run
No.5 Guide
7 Guide Pinch Meee ey
(TG-7) roller