Technical Bulletin
107782 Rev. B
Tools Required:
Wire Routing
No. 1 and No. 2 Phillips screwdrivers
5/32” Allen Wrench
Wrist strap (or similar device) for ESD grounding
Main Motor Replacement:
1. Verify that all replacement parts and tools are present.
2. Turn off power switch, unplug the AC power cord, and
disconnect all communication and interface cables.
3. Unlock and remove the Bin 1 Access Cover by rotating the
cover to the 11 O’clock position and lifting it up and off.
Figure 1
Remove eight #8-32 Phillips screws and the Service Cover
Belt Tensioner Screws
from the mechanical frame.
4. IMPORTANT: Properly ground yourself using an ESD
wrist strap (or similar device) to prevent static discharge
damage to the electronics.
5. Disconnect all connections from main controller board
assembly (Figure 1).
6. Loosen the (4) main controller board Mounting Screws and
remove the main controller board assembly.
7. Use a Phillips screwdriver to loosen (but do not remove) (2)
#8-32 Belt Tension Screws. Move tension assembly to far
right position, and re-tighten both screws (Figure 2).
Figure 2
Belt Routing Diagram
8. Remove the main motor cable from the wire restraints (Note:
Removing the U-shaped solenoid bracket will make it easier to
route the wires). Note the cable routing from the motor to the
main controller board.
9. Remove the belt from the motor pulley. Remove (3) Motor
Screws (Figure 3) and main motor.
10. Mount replacement main motor (wires exiting toward the front
of printer) with (3) Motor Screws.
11. Route wires through grommet (not shown) near output bin and
behind U-shaped solenoid bracket through to main controller
board area. Restrain wires using existing wire clips.
Figure 3
12. Reroute belt on motor pulley (see Belt Routing Diagram label).
13. Replace main controller board and plug in all connections to corresponding board locations (see tags for
board locations). Restrain wires using existing wire clips.
14. Loosen Belt Tensioner Screws (do not remove) and let belt self-tension. Turn main motor knob “B” to
distribute tension more evenly. Tighten (2) Belt Tensioner Screws. Note: Do not over tighten the belt.
Allow the tension spring to automatically set the belt tension and just tighten the screws. Verify
belt is between all pulley flanges and there is no binding between belt and cables.
15. Replace any other components that were removed. Replace both covers and close and the lock Bin 1
Access cover.
16. Reconnect all communication and interface cables, plug in the AC power cord and turn on the power
17. Verify proper functionality by printing a test coupon (refer to the Operations and/or Maintenance
Manuals if you need additional information).
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