User's Manual

User Handbook L-RU Revision C
CONFIDENTIAL
PROPRIETARY
Reg. No.: User Handbook 1100182-C.DOC Page 27 of 29
Symptoms Reason Procedure
No optical signal
1. Check the optical connectors of
the UL and DL (on the MU and RU
site) for fastening or damage
2. Check the optical cable in UL and
DL for damage
3. Clean with special equipment the
ferrules at the optical connectors
OTRx of MU is inactive
4. Connect the optical cables of the
failure link to the other optical link
connectors (in case of L-MU2 and
L-MU4) or to the spare device if
available (for L-MU1). If the link
status OK, then contact RFS cus-
tomer service for repair or re-
placement of MU.
Optical cable is inactive
5. If the link status is on failure (see
point 4) retry the communication
with spare devices (MU and RU) if
available.
6. In case of failure status the optical
cable is out of order.
• MU Link LED is
red / RU Monitor-
ing LED is red
MU or RU is inactive
7. In case of OK status (see point 5)
is MU or RU is inactive. The failure
unit can be detected by sequential
change of the only one unit (MU or
RU). Please contact RFS cus-
tomer service for repair or re-
placement of this unit.
• No signal on data /
monitoring inter-
face
No data available
1. Check the data connectors for fas-
tening or damage
2. Check the data cable for damage