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

Page: 97 / 242

Chapter 3 Troubleshooting and Fault Isolation 67
Robotics Controller Fuse Isolation Entry MAP
Replace the robotics
controller (see “Robotics
Controller PWA” on
page 145).
On the robotics controller, connect
an ohm meter to a ground test point
and to a test point for the voltage of
the blown fuse (see
FIGURE 4-24
on
page 147). Resistance should be
less than two ohms. Short present?
Disconnect J8 (see
FIGURE 4-24
on page 147).
Short still present?
See “Actuator Driver Fuse
Isolation Entry Map” on
page 68.
Replace blown fuse.
Disconnect J7 (see
FIGURE 4-24
on page 147).
Short still present?
Replace the control panel
(see “Control Panel
Assembly” on page 141).
Replace blown fuse.
Disconnect J9 (see
FIGURE 4-24
on page 147).
Short still present?
See “Tape Drive Interface
PWA Isolation Map” on
page 83.
See “Fault Isolation Entry
MAP” on page 48.
No
No
No
No
Yes
Yes
Yes
Yes