Page 56 FB8X Service Manual Rev. C, 9/28/10
6.9.2 Installing the Carriage Assembly
(Back Heater)
1. Connect the Heater connections to the
Controller Assembly.
2. Install the Carriage Assembly by feeding the
tab on the right side of the Carriage As-
sembly into the long slot in the Right Side
Plate (fig 1). When installed, the Carriage
will be sitting on the Carriage Alignment
Gears.
3. Move the Carriage Assembly forward and
check the alignment to the Spine Heater.
The left side of the Carriage should be
ever so slightly more forward than the
right side (fig 2 & 3). If it is not, lift one
side of the Carriage off the gears and re-
align.
4. Connect the Wire Harness connector to
the Book Detector PCA (fig 4).
5. Attach the Left Carriage Guide using two
M3x10 PH PHIL Screws. Ensure the tabs
in the Left Carriage Guide fit into the hole
and slot in the Left Carriage Plate.
6. Move the Carriage Assembly all the way
forward until the slot aligns with the slot in
the Right Side Plate. Insert the Right Car-
riage Guide into the slot making sure the
tabs are facing outward. Push the Carriage
Guide all the way back (fig 5).
7. Move the Carriage Assembly back. Flip
the Drive Nut Bracket up so that the holes
engage the two tabs in the Right Carriage
Guide.
8. Place the Carriage Guide Back against the
Right Carriage Guide in the orientation
shown (fig 6).
9. Use the two M4x20 Screws to attach
the Drive Nut Bracket, the Right Car-
riage Guide, and the Carriage Guide Back
together (fig 7). Verify these screws are
very tight.
10. Reattach the Carriage Clamp Switch.
11. Reattach the Carriage Springs
12. Reattach the Covers and the
Cooling Rack.
S E R V I C E A N D C A L I B R A T I O N P R O C E D U R E S
6
6 . 9 H e a t e r A s s e m b l i e s
Fig 1
Fig 3
Fig 2
Fig 4
Fig 5
Fig 6
Fig 7
After replacing the Carriage Assembly, perform the following tasks:
TASK 1
Input A_HI/A_LO INPUT values. A_HI/A_LO values are located on the heater tags.
NOTE: This is only necessary if a new Carriage Assembly has been installed.
TASK 2 Calibrate the Back Heater in CAL HEATERS menu.
TASK 3 Test the heater and measure the temperature.
TASK 4 Recalibrate Carriage Assembly in the CAL CARRIAGE menu.
TOOLS REQUIRED: #1 & #2 Phillips Screwdrivers, Needle Nosed Pliers