Sharp DV-NC200SB, Service Manual

Page: 127 / 133

2-5-1
H9740AMP
The following procedures describe how to align the
individual gears and levers that make up the tape loading/
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 individual gears and
levers be maintained.
All alignments are to be performed with the
mechanism 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 properly,
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 3
Alignment 1
Top View
Fig. AL1
Bottom View
Alignment 2
ALIGNMENT PROCEDURES OF MECHANISM
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.
Fig. AL2
Loading Arm
(TU) Assembly
Triangle Marks
Loading Arm
(SP) Assembly
Mode Gear
Last Tooth
Alignment 1
Alignment 2
Most inside teeth
of Mode Gear
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.
Fig. AL3
Top View Cam Gear (A)(HI)
First tooth
Alignment 3
Gear on Rack Assembly
First groove
on the Cam Gear (A)(HI)