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Tape Drive Interface PWA
Required Tools
Phillips screwdriver
To Remove a Tape Drive Interface PWA
1. Remove power from the library.
Caution – DO NOT disconnect the power cord from facility power or the library.
The power cord is the only means of grounding the chassis and helping to prevent
electrostatic discharge (ESD) damage.
2. Connect your ESD wrist grounding strap to the closest grounding point on the
frame of the library.
3. Open the drive access door.
4. Remove the tape drive tray assembly from the library. See "Tape Drive Tray
Assembly" on page 134 for removal instructions.
5. Disconnect all remaining cables from the tape drive interface PWA.
Caution – Do not disconnect the ribbon cables at the tape drive. If the ribbon cables
are inadvertently disconnected at the tape drive, do not reverse the cables when
reconnecting to the tape. Reversing the cables will damage the tape drive and cables.
6. Remove the screws that secure the PWA to the mounting bracket, and remove the
PWA.
To Replace a Tape Drive Interface PWA
Follow the removal instructions in reverse order.
Troubleshoot
To
If SCSI errors, tape drive errors, I/O errors, or reset errors occur after replacing a
tape drive interface PWA, the short SCSI cable between the tape drive and the
SCSI connector on the tape drive assembly bracket may not be seated properly.
Reseat the cable.
130
Sun Enterprise Tape Library 7/3500 Field Service Manual • July 1997
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