Replacing Modules 199
Chapter 5 Fault and Alarm Indicators
Replacing an I⁄O Module With a Hot Spare
If the fault indicator of an I⁄O module is on, the diagnostics have detected a module
failure.
▼ To replace an I⁄O Module:
1
If available, make a note of the diagnostic message, model, and serial numbers.
2 Before replacing an I⁄O module, observe the important instructions provided in
the section called “Guidelines for Replacing Modules” on page 195.
3 On the faulty I⁄O module, verify that the Fault indicator is on and the Active
indicator is off.
4 Verify that at least one I⁄O module has an Active indicator on.
5 On the faulty I⁄O module, rotate the lock lever counter-clockwise until the
module ejects from the baseplate.
6 Insert the replacement I⁄O module in the vacant slot and rotate the lock lever
clockwise to draw the module into the baseplate.
Note When replacing a module, you must use a #2 flat-blade screwdriver to lock
or unlock the module. See the “Installing Modules” procedure on page 148.
The Pass indicator should go on within one minute.
The Active indicator should go on within one to two minutes. Then the Active
indicator on the faulty module goes off.
If the module is not properly seated, the Lock indicator stays on. The Active
indicator does not go on until the I⁄O module is properly seated and locked.
7 Contact the Triconex Customer Response Center to obtain a returned material
authorization (RMA) number.
8 Return the module to Triconex for repair.
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