363-206-305 Detailed Level Procedure:
DLP-502
Issue 3, June 2000 Page 1 of 2
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
Replace ECC1/ECC2 User Panel (USPNL)
In Service
1.
!
WARNING:
P5
will have power on it when power is provided to
P4
. Avoid contact with
and shorts across the terminals on this connector during this procedure.
!
CAUTION:
Both power feeders A and B MUST be active for this procedure to be
done in service. If both are not active, service must be removed from the
shelf before this procedure is done.
Verify PWR ON A LED is lit. If not, check power feed and fuse; replace if
necessary before proceeding.
2. Disconnect the shelf power lead connectors from –48VB and RTNB
(P4, slate/slate-black color wires) on the FiberReach Wideband Shelf.
3. After waiting a few seconds, verify that PWR ON B LED is NOT lit.
4.
!
WARNING:
After the following step is completed, the shelf will be receiving unfused
–48V power. Do not leave the shelf in this condition. Once the following
step is done, the rest of this procedure must be completed.
Connect the power feed disconnected in the previous step to –48VBB and
RTNBB (P5, green/white).
5. Is PWR ON B LED lit.
If YES, recheck connections in Step 4.
If NO, continue with Step 6.
6. Unscrew screw at top of ECC2 user panel faceplate and remove ECC2
USPNL from the shelf.
7. Replace ECC2 PNL and tighten screw at top of faceplate.
8. Verify PWR ON A LED is lit.
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