Zebra 3742 Service Manual download pdf (Page 52)

Platen Parts 980357-220A

The platen is not a field replaceable item.

Accessing the platen would require you to first follow the removal steps of the Media Frame

Replacement, the Print Mechanism Replacement, and the Platen Motor Replacement procedures.

Then, on the right side of the mechanism, use retainer pliers to remove the ring retainer

! from the

platen gear

". Pull the platen gear off of the shaft. On the left side of the mechanism, use retainer

pliers to remove the ring retainer

# from the platen bearing $. Pull both bearings $% out of

the side frames. Slide the platen

& to the side and lift away from the mechanism.

To assemble the platen, first slide the platen into place, long end first through the right side frame.

Then, place a platen bearing on each end of the platen shaft. Insert each platen bearing into the

keyed hole on its side frame. Align the platen gear to fit over the flat edge on the right side of the

platen; then, press onto the shaft. Use retainer pliers to installing a retaining ring on each end of the

shaft. Align the platen gear so that the flat side of its mounting bearing matches the flat side of the

platen shaft; then, press the gear onto the shaft. Use retainer pliers to place a new retaining ring

onto the platen shaft to secure the gear. To complete the process, follow the assembly steps of the

Platen Motor Replacement, the Print Mechanism Replacement, and the Media Frame Replacement

procedures. Afterward, check the installation. Turn on the printer and run the AutoSense routine to

get a dump mode printout. This action tests the printer's media drive and printing capabilities.

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Zebra 3742 Service Manual Page 52