Toshiba PC-E70 - Adjustments; Record;Playback Head Adjustment; Erase Head Height Adjustment

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