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Tape Drive MUX PWA
Required Tools
Phillips screwdriver
To Remove the Tape Drive MUX 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 panels as shown in "Top, Right, and Left Panels" on
page 92.
4. Disconnect all cabling between the tape drive MUX PWA and the tape drives.
5. Disconnect the cable at J20 on the PWA and tag it.
Caution – The cable at J20 must be replaced to J20. If it is connected to J19, the
library will be damaged. Be sure to tag this cable when it is removed.
6. Disconnect cables at J2, J16, J17, and J18, and J21 on the PWA.
7. Remove the PWA mounting screws, and remove the PWA.
138
Sun Enterprise Tape Library 7/3500 Field Service Manual • July 1997
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