Sun Microsystems Enterprise Tape Library 7/3500, Field Service Manual

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102 Sun Enterprise Tape Library 7/3500 Field Service Manual • July 1997
X-Axis Stepper Motor Assembly
Required Tools
Phillips screwdriver, 5/32 allen wrench
▼
To Remove the X-Axis Stepper Motor Assembly
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. Remove the top, left, and right cosmetic panels as shown in “Top, Right, and Left
Panels” on page 92.
3. Connect your ESD wrist grounding strap to the closest grounding point on the
library frame.
4. Position the horizontal axis toward the front of the library.
5. From the left rear of the library, locate the x-axis stepper motor assembly. See
(
FIGURE 4-5
).
6. Disconnect the x-axis stepper motor in-line connector J1 that is plugged into
connector M2_J2.
7. Cut the cable ties that secure the x-axis stepper motor cable.
8. Loosen the horizontal belt at the horizontal belt tensioner. See “X-Axis Belt” on
page 40.
9. Remove the four screws that secure the x-axis stepper motor mounting bracket to
the frame.
10. Remove the four screws that secure the x-axis stepper motor to its mounting
bracket.
▼
To Replace the X-Axis Stepper Motor Assembly
● Follow the removal instructions in reverse order.