ADC Telecommunications Inc. DLC1904B Benutzerhandbuch
ADCP-75-126 • Issue B • April 2002 • Section 5: Maintenance
Page 5-18
©
©
2002, ADC Telecommunications, Inc.
5. Loosen
the captive screws that secure the STM to the RU cabinet mounting shelf and
carefully
withdraw the STM from the cabinet.
6. Remove
the four pan-head screws (requires TORX screwdriver with T10 bit) that secure
the
fan/grill assembly to rear side of the STM enclosure as shown in
Save
screws
for reuse.
Figure 5-5. STM Fan/Grill Assembly Removal
7. Carefully
withdraw the fan/grill assembly from the enclosure until the wiring harness is
exposed
and the connector is accessible.
8. Lift
the small latch on the wiring harness connector and carefully unplug the connector
from
the circuit board connector.
9. Remove
the plastic rivets that secure the fan to the mounting plate and grill by pushing
outward
.
10. Separate
fan from the mounting plate and grill
11. Use
the rivets removed in step 9 to secure the replacement fan to the mounting plate and
grill.
Orient the fan so the wiring harness is on the top and the arrow on the fan points
away
from the enclosure. Make certain the rubber grommets are left in place on the
mounting
plate.
12. Connect
the wiring harness connector to the circuit board connector.
13. Secure
the fan/grill assembly to the back of the enclosure (see
using the four
pan-head
screws removed in step 6. Do not overtighten the screws. The screw threads can
be
easily stripped if too much torque is used to tighten the screws.
16992-A