Specifications

6–32
Replacement Procedures and Parts
Printed Circuit Board Assemblies (PCBAs):
(CCB DX 29–30901–01)
(Mech Driver 29–30903–01)
(Hammer Driver 29–30902–01)
1. Unplug the printer power cord from the AC receptacle to insure that
there are no hazardous voltages present while servicing this equipment. It
is also recommended that an anti–static wrist strap (29–26246–01) be
worn, especially while servicing logic components.
2. Remove the front panel (Figure 6–6, page 6–38), from the cabinet to gain
access to the card cage. This is accomplished by loosening the retaining
screw located inside the top of the cabinet, directly below the control
panel. Lift and pull the panel away from the printer to remove.
3. Remove the card cage access panel by removing the five (5) screws
which hold it in place.
4. Identify the correct PCBA to be replaced, and, with your wrist strap in
place, remove and replace the defective PCBA.
NOTE: The Mech Driver PCBA (center module) seats very firmly into the
upper and lower card guides. It may be necessary to gently lift up on
the card cage directly above the upper card guide in order to slide
the Mech Driver board into the card cage.
5. Before re–installing the front covers, apply power to the printer and
insure that the problem has been corrected.
6. Re–install the front covers, and return the printer to the on–line state.