Lucent Technologies SLC 5 Series - Page 219

Power Up: DLP-531 363-205-401
Page 2 of 2 Issue 7, March 1997
8. Do all fans operate while
FAN TEST
button is pressed?
If
YES,
then
STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If
NO,
then continue with Step
9.
9. Does −
48V FAN H
or −
48V FAN L
fuse on
BFU
blow again?
If
YES,
then continue with Step
10.
If
NO,
then proceed to Step
11.
10. Check wiring using SD-7C118-02 and SD-7C150-01. Repeat procedure from
Step
3
after locating and correcting trouble.
11. Replace
A/FCU
.
12. Press
FAN TEST
button on
A/FCU
.
Response: All fans should operate while button is pressed.
13. Do all fans operate while
FAN TEST
button is pressed?
If
YES,
then
STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If
NO,
then continue with Step
14.
14. Replace
A/FCU
with
A/FCU
removed previously.
15. Is
FAN ALARM
indicator on fan shelf lighted?
If
YES,
then continue with Step
16.
If
NO,
then proceed to Step
17.
16. Replace fan shelf and repeat from Step
3.
17. Check wiring to fan shelf per SD-7C118-02 and SD-7C150-01. Repeat proce-
dure from Step
3
after locating and correcting trouble.