3-18.TAPE SENSORS, REEL SENSOR
1 Photo diode
AND EP SW LEVERCut
(reel sensor)
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.Mounting shaft for
take up reel
2) Refer to section 3-3-1 and remove the cassette mecha-
assembly
nism assembly.
3) Remove the soldering from the MC-1 PWB assembly,
then remove the photo diodes 1, 2 and the LED 3.
When removing the photo diode 2 on the tape top
sensor side, refer to section 3-15 and remove the main
cam.
ASSEMBLY NOTES:
1. Fit the photo diodes 1 and 2 so that their photorecep-
2 Protrusion
tors to face the LED 3, as shown in Fig. 3-18-1. Align
the cuts in the LED 3 and the holder 4.
Push the photo diodes 1, 2 and the LED 3 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. 3-18-2
Turn the photoreceptors to
face the LED 3
3-18-3. EP SWITCH LEVER (See Fig. 3-18-3)
1) Refer to section 3-3-1 and remove the cassette mecha-
1 Photo2 Photo
nism assembly.
diode diode
2) Remove the EP switch spr1.ing
(Tape end (Tape top
sensor) sensor)3) Remove the clamp 2, then remove the EP switch lever
3.
3 LEDASSEMBLY NOTES:
1. Apply grease (VHJ-0100) to the protr4 on theusion
Align the cuts
back of the EP switch le3. ver
2. After fitting the cassette mechanism assembly. check
HoldersHolders
that in EJECT mode. the EP switch le3 does notver
4 Holder
touch the EP switch 5 .
1 EP switch spring
Front3 EP switch lever
Fig. 3-18-1
4 Protrusion on2 Clamp
back
3-18-2. REEL SENSOR (See Fig. 3-18-2) (apply grease here)
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) 1.
ASSEMBLY NOTES:
5 EP switch
1. When assembling the parts, align the cut on the photo
diode (reel sensor) 1 with the protrusion on the
mechanism chassis 2.
2. Do the soldering quickly. Fig. 3-18-3
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