F I M - 1 0 8 F I B E R I N T E R F A C E
3 - 1
MAINTENANCE
TROUBLESHOOTING TIPS
Listed below are some of the more common problems that you may experience, their possible causes, and suggested
solutions.
If you are unable to resolve a problem with your FIM-108 unit, call Clear-Com Intercom Systems at (510) 496-6666
and ask for the Service Department. See the Warranty Chapter for more information.
PREVENTIVE MAINTENANCE
Every two years verify the adequacy of optical power at the far end of each optical fiber with an optical power meter.
BLOCK DIAGRAM OF A ONE-FIBER SYSTEM (FIM-108M OR FIM-108S)
Figure 1: Block Diagram for One-Fiber Systems (FIM-108M and FIM-108S)
SYMPTOM
POSSIBLE CAUSE
No operation, indicators all off.
No power.
Make sure the power switches of
both units are on, and their
external supplies are delivering
between 12 to 24 VDC.
No operation, but front-panel
Link Status light is on.
Optical communications failure.
Check for broken or
disconnected fibers. Check to see
if the FIM-108 at the other end
is operating correctly. For a
one-fiber system, check the block
diagram on page ???.
FIM-108 units are operating
correctly, but connected stations
or interfaces are not.
Check RJ-45 cables or Matrix
configuration.
LED
WDM
DET
Audio In (8)
Digital In, RS-422 (8)
Audio Out (8)
Digital Out, RS-422 (8)
LED
WDM
DET
Audio in (8)
Digital in, RS-422 (8)
Audio out (8)
Digital out, RS-422 (8)
850 nm
1300 nm
1300 nm
850 nm
Unit A
Unit B
ST-type Connectors
1550 nm
1300 nm
Single Optical Fiber
3
