2-4-8
U27HSAPM
ALIGNMENT PROCEDURES OF MECHANISM
The following procedures describe how to align the
individual gears and levers that make up the tape load-
ing/unloading mechanism. Since information about the
state of the mechanism is provided to the System
Control Circuit only through the Mode Switch, it is
essential that the correct relationship between individ-
ual gears and levers be maintained.
All alignments are to be performed with the mech-
anism in Eject mode, in the sequence given. Each
procedure assumes that all previous procedures have
been completed.
IMPORTANT:
If any one of these alignments is not performed prop-
erly, even if off by only one tooth, the unit will unload
or stop and it may result in damage to the mechanical
or electrical parts.
Alignment points in Eject Position
Alignment 1
Loading Arm (SP) and (TU) Assembly
Install Loading Arm (SP) and (TU) Assembly so that
their triangle marks point to each other as shown in
Fig. AL2.
Alignment 2
Mode Gear
Keeping the two triangles pointing at each other, install
the Loading Arm (SP) Assembly so that the last tooth
of the gear meets the most inside teeth of the Mode
Gear. See Fig. AL2.
Alignment 3
Cam Gear (A) (HI), Rack Assembly
Install the Rack Assembly so that the first tooth on the
gear of the Rack Assembly meets the first groove on
the Cam Gear (A) (HI) as shown in Fig. AL3.
Alignment 1
Alignment 2
Top View
Alignment 3
Bottom View
Fig. AL1
Loading Arm
(TU) Assembly
Triangle Marks
Loading Arm
(SP) Assembly
Mode Gear
Last Tooth
Alignment 1
Alignment 2
Most inside teeth
of Mode Gear
Fig. AL2
Fig. AL3
Cam Gear (A)(HI)
First tooth
First groove
on the Cam Gear (A)(HI)
Alignment 3
Top View
Gear on Rack Assembly
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