Ithaca 75 User Manual page 53

A = Printhead
B = Ribbon Cassette
C = Ribbon Feed Gear Assembly
D = Carriage Cable
Note: You do not need to separate the Printer from the Base Assembly or
remove any of the boards to remove the Carriage Assembly. If you
have already removed the Base Assembly and the boards, turn the
printer right-side up, but be careful not to damage the Carriage Cable.
1. Remove the Ribbon Cassette (B).
2. Lift up on the printhead clamp located on the right side of the Printhead (A)
and remove the Printhead.
3. Rotate the Slider Assembly (H) away from the Space Motor Assembly and
printer frame by loosening the screw (F) with a #1 Phillips screwdriver.
You do not need to remove this screw.
4. Remove the Space Motor Assembly by unscrewing the two screws (G)
holding the Space Motor Assembly to the Carriage Assembly with a #1
Phillips screwdriver.
Caution: Do not separate the top and bottom halves of the Ribbon Feed Gear
Assembly in the next step or gears will fall out of the assembly.
5. Remove the Ribbon Feed Gear Assembly (C) from the Space Motor (E) by
pulling the four tabs outward.
a. Pull the two tabs outward that are closest to the Carriage Cable (D).
b. Next, pull the other two tabs outward.
Caution: Be careful when handling the ribbon cable. It will crease easily.
Avoid touching any of the contact areas.
6. Carefully disconnect the Carriage Cable (D) by separating it from the
Ribbon Feed Gear Assembly (C).
Note: Reverse these procedures to reinstall the Space Motor Assembly.
Note: After the Space Motor Assembly has been reinstalled, check the
spacing between the Space Motor Assembly and the Space Rack (see
F, Figure 26). Adjust the space to .012 inches with a Thickness Gauge.
Loosen the two screws (G) as needed to make the adjustment.
Check the platen parallelism and air gap and readjust if necessary. See
"Adjusting the Platen Parallel to the Printhead" and "Adjusting the
Platen Air Gap" in the "Maintenance" chapter.
Disassembly
E = Space Motor
F = Screw
G = Screws
H = Slider Assembly
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