
Page 4-44 Z4M/Z6M Maintenance Manual 77259L Rev. 4 12/16/03
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Figure 4-35. Ribbon/Printhead Sensor Gap
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1. Turn the printer Off (O) and disconnect the AC power cord.
2. Open the media door and remove all media and ribbon from the printer.
3. Refer to Figure 4-15. Remove the electronics cover by removing the two screws that
secure the cover to the printer.
4. Refer to Figure 4-30. Using a hex key, loosen the stepper motor mounting screw.
Make note on where the drive belt is positioned on the platen pulley and swing the
stepper motor up to remove the drive belt.
5. Using a hex key, remove the stepper motor pivot screw. Remove the stepper motor
to gain access to the transmissive sensor mounting screw.
6. On the electronics side, cut the cable ties that hold the transmissive sensor assembly
wires along with other wires up to the main logic board.
0.060 inch
(1.5 mm )
±
± 0.4 mm
0.015 inch
Ribbon/Printhead
Open Sensor
Mounting Screw
Print Mechanism
Caution • This installation must be performed by a qualified service technician.
Note • It may not be necessary to remove the stepper motor.
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