1. Perform “Preparing a Library or Library Module for Repairs” on page 8-4.
2. Open the I/O Station and Access doors of the control module.
Note: If the I/O Station door is locked, see “Manually Unlocking the I/O
Station Door” on page 7-42
3. Perform “Removing an I/O Station” on page 8-35.
4. Remove the mounting screw (2 in Figure 8-36 on page 8-36), and set it aside.
5. Disconnect the I/O Station cable (3 in Figure 8-36 on page 8-36) from the lock
assembly.
6. Remove the lock assembly from the module enclosure.
Replacing the I/O Station Lock Assembly
1. Perform “Removing the I/O Station Lock Assembly” on page 8-36 in the
reverse order.
Important:
a. When installing the lock assembly, be careful not to damage any
of the cables or connector pins.
b. Ensure that the back end of the lock assembly fits into the
appropriate slot at the bottom of the enclosure.
c. Ensure the I/O Station switch actuator lever (1 in Figure 8-36
on page 8-36) is not stuck under the enclosure sheet metal and
operates without binding on the enclosure.
2. Perform “Returning a Library or Library Module to Normal Operations after
Repairs” on page 8-4.
Removing the I/O Station Safety Flap from a Control Module
(5U)
1. Perform “Removing an I/O Station” on page 8-35.
2. Unhook the front spring wire (1 in Figure 8-37 on page 8-38) from the tab on
the I/O flap.
Chapter 8. Add, Check, Adjust, Remove, and Replace Procedures 8-37
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