Service manual

Drive Mechanism GV 30…, GV 50…
k
5 - 28 GRUNDIG Service
Apply grease (75988 061 7800)
to the shaded parts
Fig. 8.35
8.13 R/P Head Assy (Pos. 50200)
– Undo the screw (Pos. 50210), press the R/P head assy
(Pos. 50200) in the direction of the arrow as shown in Fig. 8.36 and
remove it upwards.
Note: Align the hole U of the R/P head assy (Pos. 50200) and pin
V on the mechanism chassis.
Subsequently, adjust the tape path and tracking position
(X value, refer to point 9. „Adjustments“).
50210
50200
U
V
Fig. 8.36
8.14 Tape Drum (11000)
– Undo two screws (30000), remove the stator (22000) and the tape
drum earth spring (11600, Fig. 8.37).
– When turning the mechanism upside down now, the carbon chip
(11500) will fall out (Fig. 8.37).
– Undo two screws (30000) and remove the rotor (Pos. 21000, Fig.
8.37).
– Undo the three screws (10400) at the bottom of the mechanism and
take the complete tape drum (11000) out (Fig. 8.38).
Refitting: When refitting the tape drum (11000) align it to match with
the two dowels Y of the mounting base on the mechanism
chassis (Fig. 8.38).
Tighten the screws (10400) using a torque of 3.9 to
4.2kg/cm.
11000
Tapr drum
22000 Motor, stator
Flexible cable
30000
11600
Earth spring
11500
Carbon chip
30000
21000
Motor, rotor
Fig. 8.37
11000
10400
Y
10400
Fig. 8.38
Note: On reassembling the rotor (21000) the phase must be
adjusted to that of the headwheel. The hole W of the
headwheel and the hole X of the rotor (21000) must be on
the same side as shown in Fig. 8.39.
Tighten the screws (30000) for attaching the rotor (21000)
and the stator (22000) using a torque of 2.5 to 3.5kg/cm.
11200
Headwheel
21000
Motor, rotor
W
X
Fig. 8.39