Intermec EasyCoder PD4, Service Manual

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28 Intermec EasyCoder PD4—Service Manual
Chapter 6—Transfer Ribbon Mechanism
6.1 Ribbon Module
Description
The thermal transfer mechanism hold the supply of thermal transfer
ribbon and winds up the spent ribbon after printing. It consist of a self-
contained unit that is attached to the center section and driven by a belt
from a pulley on the platen roller shaft (also see Chapter 7). In addition
to this unit, there is also a ribbon out sensor and an ink position selector
attached to the center section.
Replacement
The ribbon module has three replaceable parts—the belt and the bobbin
plates on the ribbon supply and rewind units. The ribbon out sensor and
the ink position knob are also replaceable.
To replace the entire ribbon module, follow these instructions:
1 Disconnect the power cord and remove the left-hand panel as described
in Chapter 3.2. Carefully read the safety instructions in Chapter 3.2!
2 Slip the belt that drives the platen from its pulley (also see Chapter 7.2).
3
Use a pair of narrow pliers to disconnect the spring between the ribbon
supply and the ink position knob.
4 Remove the six screws that hold the ribbon module to the center section
from the media compartment side.
5 Tilt the ribbon module so you can remove the belt from the pulley on
the platen roller shaft.
6 Do not dismantle the module any further, unless you need to replace the
belt (See Chapter 6.2). Reassemble in reverse order
Ribbon supply unit
Ribbon rewind unit
Belt
Bracket
Screws (x6)