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Module Problems
6 Restore the module. Lift up the module to disengage it from the rod at the
top of the carrier.
7 Connect the trunk and extension cords.
8 Attach a tag, error printout, or any information that will help identify any
visible problems, failure symptoms, and relevant error reports.
Checking Unlabeled Wiring
If a label is missing or damaged, use a tone device and a telephone handset
to match like wires.
You need the following tools:
Tone device
Telephone handset
Telephone cord with an 8-pin modular plug
4-pair patch cord
Diagonal pliers or wire strippers
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To match like wires, follow the steps below.
Insert the telephone cord’s 8-pin plug into an outlet on the floor area.
Using diagonal pliers or wire strippers, cut off the end of the telephone
cord to expose the pairs.
Choose a single pair and then untwist the wires.
Attach one wire from the pair you have chosen to each clip. The clips
extend from the bottom of the tone device.
Turn on the switch on the outside of the tone device.
You hear a high-pitched, alternating signal.
Take the telephone handset and a 4-pair patch cord to the cross-connect
field between the control unit and the telephone.
Control Unit Problems 4-59