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Loading motor board assemb ly
Loading motor
Lugs
Worm gear
Fig.3-2-7a
3.2.8 Capstan motor
3.2.8.1
How to remove
(1) Remove the belt (capstan) on the mechanism assembly
back side.
(2) Remove the three screws (A) and remove the capstan mo-
tor.
Screws(A)
Fig.3-2-8a
Spacer
Fig.3-2-8b
1-22 (No.82933)
Motor guide
6.5± 0.2 mm
Motor pulley
Bel t
Screw(A)
Capstan motor
Belt
Spacer
Connector for
the capstan motor
3.2.8.2
How to install (Centering the mounting position)
When the capstan motor has once been removed and then rein-
stalled out of the initial correct position in the rotational direction,
the capstan motor current may be unstable during operation in
high or low temperatures. This may result in greater Wow & Flut-
ter and occasionally in power breakdown
because of current over - load. Install the capstan motor while fol-
lowing the procedure given below.
(The capstan motor is centrally located when the unit is shipped
from the factory.)
(1) Provisionally tighten the three screws (A) securing the cap-
stan motor.
(2) Install the mechanism assembly to which the capstan mo-
tor is provisionally fastened on the bottom chassis which in-
corporates the Main board assembly. (No need to tighten
the screws for mounting the mechanism.)
Make sure that all the connectors for the mechanism as-
sembly and the Main board assembly are correctly in-
stalled as indicated in Fig. 3-2-8b.
(3) Making sure that the connector for the capstan motor is
correctly mounted, and securely tighten the three screws
(A).
Note:
• When the capstan motor has been replaced with a new
one, perform recording in the EP(or LP) mode for at
least 2 minutes at normal temperatures immediately be-
fore starting the FF/REW or SEARCH operations (Ag-
ing).
3.2.9 Pole base assembly (supply or take-up side)
3.2.9.1
How to remove
(1) Remove the UV catcher 2 on the removal side by loosening
the screw (A).
(2) Remove the pole base assembly on the supply side from
the mechanism assembly by loosening the screw (B) on
the mechanism assembly back side and sliding the pole
base assembly toward the UV catcher 2.
(3) As for the pole base assembly on the take-up side, turn the
pulley of the loading motor to lower the cassette holder be-
cause the screw (B) is hidden under the control plate. (See
the "Procedures for Lowering the Cassette holder assem-
bly" of 2.3 DISASSEMBLY/ASSEMBLY METHOD.) Fur-
ther turn the motor pulley to move the cassette holder until
the screw (B) is no longer under the control plate (in the
half-loading position). Then remove it as done for the sup-
ply side by removing the screw (B).
Note:
• After reinstalling the Pole base assembly and the UV
catcher2, be sure to perform compatibility adjustment.
Screw(A)
Screw(A)
UV catcher2
UV catcher2
Fig.3-2-9a
Screw(B)
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