Belts - Intermec EasyCoder 501 XP Service Manual

Chapter 8 Print Unit

8.4 Belts

46
Description
The print unit normally has two timing belts, one that drives the
platen roller and another that drives the ribbon assist roller and the
ribbon rewind unit. There is also a third belt if an optional liner/
batch takeup unit is fi tted (see Chapter 9.) The belts are subject
to wear and may need periodical replacement. Properly adjusted
tension and alignment of the pulleys will increase time between
replacements.
Replacement
• Switch off the power and disconnect the power cord.
• Open the front and right hand doors.
• Remove the cover over the electronics compartment, which is
held by eight #T10 Torx screws.
• Remove the tension of the belt to the ribbon rewind unit by
loosening the two #T20 screws that holds the unit.
• Dismantle the stepper motor from the bracket by removing the
two #T20 Torx screws.
• Free the belt from the pulley of the ribbon rewind unit and
manipulate the stepper motor so it comes free from both belts.
Remove the stepper motor.
• Replace the defective belt or belts.
• When putting back the stepper motor, fi t the short belt fi rst,
while letting the long belt hang loosely on the idler in a loop,
through which you can insert the pulley of the stepper motor.
Do not put the long belt around the pulley of the ribbon rewind
unit until you have fi tted the stepper motor to the bracket and
checked that both belts are engaged by the pulleys.
• Adjust the tension of the belts as described in Chapter 8.5 and
put back the cover.
Refer to illustration on next page!
Intermec EasyCoder 501 XP – Service Manual Ed. 4