
Chapter 4 Troubleshooting the Installation
Troubleshooting the Processor Subsystem
Check the following to help isolate a problem with the RP:
•Are both alphanumeric LED displays on?
–The two displays are powered separately. The left display receives power from the
•If both displays are on, check the message being displayed. As soon as the
–If the power modules and blower module appear operational, but none of the RP LEDs or displays are on, suspect that the RP has not been properly installed or that the +5 VDC output from the alarm card is faulty.
–Turn the power switch for each PEM to the off position.
–Loosen the two captive screws on the left and right sides of the RP faceplate, and use the ejector levers to eject and reseat the RP. Tighten the captive screws, then power up the system by turning the PEM power switches on.
•Is a critical, major, or minor alarm LED on the alarm card on?
–If any of the three alarm card alarm LED pairs is on, a fault has been detected in the system. Check the console for messages indicating the source of the problem.
–There could be a false error indication originating from the RP
(Table
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