24
Preventive Maintenance
Carry out the following procedures every two years:
• Replace the internal Ni-Cad battery pack.
• Verify the adequacy of optical power at the far end of each optical fiber.
Use an optical power meter such as the one in the Accessory List.
Accessory List
The following accessories are available from Telecast:
• Optical power meter kit
• Cable repair kit
• Loop-back cable to localize signals during installation test
• Replacement Ni-Cad battery pack
• Quick-crimp kit to attach ST connectors to fiber optic cable
• Prefabricated cables built to custom lengths
Troubleshooting
If you are unable to resolve the problems with your Adder 882i System, call
Telecast Fiber Systems, Inc. at 508-754-4858 and ask for our service
department. To return a unit for repair, obtain a return material authorization
(RMA) number from Telecast service.
Symptoms
Possible Cause
Corrective Action
No operation, All indicators off
No power
Make sure power switches on
both ends are on and that the
external power supplies are
delivering 13.8-24VDC
No operation. INTERNAL
RESERVE LED off
Battery depleted or either
power switch off
Make sure power switches on
both ends are on.
Recharge battery
Normal operation. INTERNAL
RESERVE LED RED
Internal battery depleted
The light should go GREEN
after 1/2 hour of use w/ AC
adapter. If not, replace battery
No operation. LINK STATUS
LED on
Optical failure
Check your fiber link with an
optical power meter. Is the
unit on the other end powered
and working?
Very low audio signal output
Mic Input gain set at 0db
Set internal switch to +40db
Distorted audio signal output
Line input set at +40db
Set internal switch to 0db
Internal reserve battery fails
quickly
Reserve battery uncharged
Connect to ext. power source
of 13.8-24VDC for 16 hrs.
System goes dead when ext.
power is removed
Reserve battery dead or not
connected properly
Check battery connection.
Replace battery if necessary.
Table 9: Troubleshooting
