10.
Remove the Leadscrew/Spring Cup subassembly through the top plate by gently
raising the Carriage Assembly all the way to the top of the Vertical (Y) Axis
range of motion.
NOTE
In the next step, a thin metal spacer may come loose from the bottom of the Leadscrew.
11.
While holding the Carriage Assembly at the top of its vertical range of motion,
rotate the Leadscrew counter-clockwise to disengage it from the Vertical (Y) Axis
Leadscrew Motor/Nut (Figure 7-6). This may require holding the (Y) Axis nut to
prevent it from rotating. Finally lift the Leadscrew out of the top plate and set it
in a safe place. Locate the thin metal spacer and place it in a safe location.
12.
Lower the Carriage Assembly back down onto the bottom plate.
13.
There are two Guide Shaft Strike Plates mounted on the top plate. Gently move
the Switch Bracket ribbon cable out of the way. Remove all four Guide Shaft
Strike Plate mounting screws, then remove both Guide Shaft Strike Plates
(Figure 7-7).
14.
Slowly lift the rear Guide Shaft up and out of the TLS.
CAUTION
Be very careful not to damage the Vertical (Y) Axis Home Sensor on the Vertical
Axis Home Sensor Probe (Figure 7-3) when you move the Carriage Assembly.
15.
Hold the Carriage Assembly with the left hand. Failure to do so, will cause the
Carriage Assembly to tip over after the shaft is removed, possibly damaging the
Vertical (Y) Axis Home Sensor. Lift the front Guide Shaft far enough to clear the
Carriage Assembly. Gently lift the Carriage Assembly and remove it from the
cabinet, then lower the front Guide Shaft down onto the bottom plate.
16.
Slowly lift the front Guide Shaft up and out of the TLS. Be sure to put the or-
ange rubber bushing (located at the bottom of the Guide Shaft) in a safe place. It
must be reinstalled before the Guide Shaft is reinstalled.
501380 Rev. B
Field–Replaceable Units (FRUs)
7-9
