Intermec EasyCoder PD4, Service Manual

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40 Intermec EasyCoder PD4—Service Manual
Chapter 7—Print Mechanism
Replacement
Before replacing the module, check that there is no dirt, dust, adhesive resi-
due, or stuck labels that blocks the light between the two sensors. To clean
the sensors, it may be necessary to take out the module as described below.
To remove the label gap sensor module, follow these steps:
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!
Open the right-hand door and remove the bottom right-hand panel, see
Chapter 2.4.
2 Remove the E-ring, washer, and bearing from the outer end of the platen
roller, that is, the end in the media compartment.
3 Remove six screws that hold the outer gable of the printhead.
4 Fold the outer gable aside, taking care not to damage the headlift sensor
and its cable (see Chapter 7.6).
5
Remove the single screw that holds the label gap sensor module in the
electronics compartment. It is situated immediately to the rear of the
black sensor module.
6
Disconnect the cables from CN8 (“BLACK”) and CN9 (“SEE”) on the
main board. Free the cables from the spiral bindings and the cable clip.
7 Pull out the entire label gap sensor module into the media compartment.
8 Do not dismantle the module. The entire module is available as a
replacement part.
9 Install the label gap sensor module in reverse order.
Label gap sensor module
Outer gable
Bearing
Washer
E-ring
Screw (x6)