User Manual

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3-18. TAPE SENSORS, REEL SENSOR AND
EP SW LEVER
3-18-1 TAPE TOP SENSOR AND TAPE END
SENSOR (See Fig.3-18-1)
1) Refer to section 3-2 and remove the mechanism unit.
2) Refer to section 3-3-1 and remove the cassette
mechanism assembly.
3) Remove the soldering from the MC-1 PWB assembly,
then remove the photo diodes
, and the LED
. When removing the photo diode on the tape
top sensor side, refer to section 3-15 and remove the
main cam.
ASSEMBLY NOTES:
1. Fit the photo diodes and so that their photo-
receptors to face the LED
, as shown in Fig.3-18-1.
Align the cuts in the LED
and the holder .
Push the photo diodes
, and the LED as far
down as they will go, so that they do not protrude
above the top of their holders.
2. Do the soldering quickly.
Fig.3-18-1
3-18-2. REEL SENSOR (See Fig.3-18-2)
1) Refer to sections 3-12-2 and 3-12-4, then remove the
clutch mounting assembly, the T soft brake assembly
and the take up reel assembly.
2) Refer to section 3-13-2, then remove the wheel gear 2,
the wheel gear 1, and the brake control lever.
3) Remove the soldering from the MC-1 PWB assembly,
then remove the photo diode (reel sensor)
.
ASSEMBLY NOTES:
1. When assembling the parts, align the cut on the
photo diode (reel sensor)
with the protrusion on
the mechanism chassis
.
2. Do the soldering quickly.
Fig.3-18-2
Fig.3-18-3
3-18-3.EP SWITCH LEVER (See Fig.3-18-3)
1) Refer to section 3-3-1 and remove the cassette mecha-
nism assembly.
2) Remove the EP switch spring
.
3) Remove the clamp
, then remove the EP switch
lever
.
ASSEMBLY NOTES:
1. Apply grease (VHJ-0100) to the protrusion on the
back of the EP switch lever
.
2. After fitting the cassette mechanism assembly, check
that in EJECT mode, the EP switch lever
does not
touch the EP switch
.
Photo
diode
(Tape end
sensor)
Photo
diode
(Tape top
sensor)
LED
Holders
Turn the photoreceptors to
face the LED
Align the cuts
Holder
Holders
Front
Photo diode
(reel sensor)
Protrusion
Cut
Mounting shaft for
take up reel assem-
bly
EP switch spring
Clamp
EP switch lever
Protrusion on
back
(apply grease here)
EP switch