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PC-E70
5. ADJUSTMENTS
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Figure 25
TEST EQUIPMENTS
1.
VTVM
(Vacuum Tube Voltmeter)
2.
Signal Generator
3.
Resistance Attenuator
4.
Screwdriver
RECORD/PLAYBACK HEAD ADJUSTMENT
Erase Head Adjusting Screw
Head Azimuth
Adjusting Screw
Adjust for Maximum Output.
Figure 26
ERASE HEAD HEIGHT ADJUSTMENT
1.
Temporaily
mount
the
erase
head
so that it will be
even by eye measurement.
2.
Set in PLAY
position with setting a mirrow cassette
tape, MC-09C.
3,
Adjust
the height adjusting screw
so that the upper
edge of the tape will touch at the upper tape guide of
the erase head. See figure 28.
4.
Confirm
whether
the upper
edge of the tape is not
Curled.
5.
Test Tapes:
MTT-114 (10 kHz)
MTT-150 (400 Hz)
AC-511
(CHROME TAPE)
Upper Guide
Figure 27
Touch Here
Curled
Tape ——
Sith
= 1.
Tape ——
Exon ae
Figure 28
OK
5.
Paint the adjusting screw with lock paint.
P.S. When
the mirror
cassette
is not available, please re-
model a normal tape, type C-90 as shown below.
See figure 29.
Figure 29
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