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Tape Drive Distribution PWA
Required Tools
Phillips screwdriver
To Remove a Tape Drive Distribution 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. Remove the right cosmetic panel as shown in "Top, Right, and Left Panels" on
page 92.
4. Disconnect all cabling between the tape drive distribution PWA and the tape
drives.
5. Disconnect cables at J1, J3, J4, J8, and J9 on the PWA.
6. Disconnect the light assembly power connector at the top of the PWA.
7. Remove the PWA mounting screws, and remove the PWA.
To Replace a Tape Drive Distribution PWA
Follow the removal instructions in reverse order.
To Troubleshoot
If the load port does not operate after replacing the PWA, check if the cables
connected to J7 and J9 on the PWA are reversed.
136
Sun Enterprise Tape Library 7/3500 Field Service Manual • July 1997
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