20
4.3
Drum motor replacement
TOOLS REQUIRED
2.5 mm Hex driver
5 mm Hex driver
Wire cutters
Small cable tie
1.
Power down the printer and remove the power cord from the power
source. Raise the print mechanism.
2.
Remove the ribbon from the printer.
3.
Cut the cable tie securing the wiring harness to the print mechanism.
4.
Disconnect JA/PA connector.
5.
Use a 2.5 mm hex driver to remove the two screws securing the belt
guard to the print mechanism and remove the belt guard.
6.
Use a 5 mm hex driver to remove the four screws securing the drum
motor.
7.
Use a #2 Philips driver to remove the four screws securing the motor to
the motor mounting bracket.
8.
Loosen the two set screws and remove the drive pulley from the existing
motor.
9.
Carefully tighten the set screws on the pulley to the motor shaft on the
new motor.
10.
Mount the bracket to the new motor using the four screws removed
earlier.
11.
Loosely install the four screws attaching the motor/base plate assembly
to the print mechanism.
12.
Reposition the drum belt on the drum and motor pulleys.
13.
Tension the belt by lifting the motor with your hand and tighten the four
screws.
14.
Check the belt tension with a compressive spring gauge. The belt should
deflect 3/16" when a pressure of 9 lbs. is applied to the belt midway
between the pulleys.
15.
Reattach the belt guard with the screws removed earlier.
16.
Raise the print mechanism.
17.
Reconnect the JA/PA connectors.
