363-205-401 RT Turn Up:
Issue 7, March 1997 Page 1 of 2
DLP-503
Install Fan Control Unit (FCU)
1.
!
CAUTION:
Fan operation is essential to prevent system failures in the Series 5 RTs
engineered and installed with fans.
Get one
FCU
(
AUA24
) and inspect for possible damage.
Comment: The FCU is not required if the 4A Fan Unit is used.
2. Insert
FCU
into
FCU
slot in upper shelf of system being equipped.
3. Press
FAN TEST
button on
FCU
.
Response: Fans should operate while button is pressed.
4. Do fans operate while
FAN TEST
button is pressed?
If
YES,
then
STOP. YOU HAVE COMPLETED THIS PROCEDURE.
If
NO,
then continue with Step
5.
5. Is system equipped with Fiber-to-the-Home (FTTH) feature?
If
YES,
then continue with Step
6.
If
NO,
then proceed to Step
7.
6. Is −
48V FAN H
or −
48V FAN L
fuse on
BFU1
or
BFU2
blown?
If
YES,
then continue with Step
8.
If
NO,
then proceed to Step
13.
7. Is −
48V FAN H
or −
48V FAN L
fuse on
BFU
blown?
If
YES,
then continue with Step
8.
If
NO,
then proceed to Step
13.
8. Replace blown fuse(s) on
BFU
.
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