228 Troubleshooting the Tape Library
T030
T030 - Excessive I/E Station Events
Description GUI Description: An I/E station is reporting continuous door open or closure
events although no close or open door state change is detected.
Explanation: The library controller is receiving too many I/E station interrupts.
The problem may be caused by a stuck interrupt line for the CM or EM door
open and close indication. Door open and close state changes are detected
properly, but the excessive I/E station state change interrupt notifications
indicate a hardware problem, most likely due to a cabling/connection issue.
Detection Scenarios Library firmware receives multiple or continuous I/E station open and close
interrupts, but does not detect the required door open and close state change.
Root Causes • Internal module sensor line and cable connections shorted.
• Module terminator pins bent or shorted.
• Module-to-module cable pins bent or shorted.
Service Resolution
Steps
1 Perform DR008 - Resolve Stuck
I/E Station Interrupt on page 370.
2 Inspect the module terminators and module-to-module cables for loose
connectors or damage (bent or broken pins). If damaged, replace the part.
Reseat the terminators and cables.
3 Power on the library and wait for the library to initialize. Open and close each
I/E station door. If the problem is not fixed, you may need to replace the
module.
Possible CRUs/FRUs Note: Read and perform all resolution steps before dispatching any parts.
Dispatch the first part listed below for replacement. If this does not solve the
problem, dispatch the second part, and so on, in order. Dispatch only one part
(or set of parts) at a time.
1 Module Terminators and Module-to-Module Cables
2 Module (EM or CM)
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