IBM Support

Potential for Defeating 3584 I/O Station Lock Mechanism Exposing User to Class II Laser

Flash (Alert)


MachineType/Model affected: TS3500 (All 3584-Lxx Frames and 3584 Dxx with 4 I/O Door feature) - locking mechanism for the I/O station doors on the TS3500 library.


There exists a possibility that a user may defeat the locking mechanism for the I/O station doors on the TS3500 library, subsequently allowing the door to be opened fully while the library accessor scans the I/O station slots for cartridges, potentially exposing users looking through these slots to the Class II laser in operation.

During normal operation, the door should always be closed by gently sliding it from left to right and holding it closed until the user hears the mechanical sound of the solenoid switch deploying and securing the door shut and seeing the indicator light on the operator panel indicating that the door is closed. If at any time a user observes that the door is open, even slightly, when the operator panel indicator light indicates the door is closed, the user should take the following steps:

1. Close the door as far as the solenoid switch will allow it to close (this may leave an opening of approximately 0.5 inches);
2. Wait until the sound of the solenoid retracting is heard; and
3. Completely close the door as it is normally done.

Under no circumstances should an individual look directly at the beam of a library’s internal scanner’s laser while it is operating and emitting light. If the door is locked, do not attempt to force it open.

Historical Number


Document information

More support for: Tape Libraries

Version: Not Applicable

Operating system(s): Platform Independent

Reference #: S1004412

Modified date: 23 July 2013

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