Preventive Maintenance; Accessory List; Troubleshooting; Table 9 Troubleshooting Chart - Telecast Adder 882i Instruction Manual

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
No operation, All indicators off
No operation. INTERNAL
RESERVE LED off
Normal operation. INTERNAL
RESERVE LED RED
No operation. LINK STATUS
LED on
Very low audio signal output
Distorted audio signal output
Internal reserve battery fails
quickly
System goes dead when ext.
power is removed
24
Possible Cause
No power
Battery depleted or either
power switch off
Internal battery depleted
Optical failure
Mic Input gain set at 0db
Line input set at +40db
Reserve battery uncharged
Reserve battery dead or not
connected properly
Table 9: Troubleshooting
Corrective Action
Make sure power switches on
both ends are on and that the
external power supplies are
delivering 13.8-24VDC
Make sure power switches on
both ends are on.
Recharge battery
The light should go GREEN
after 1/2 hour of use w/ AC
adapter. If not, replace battery
Check your fiber link with an
optical power meter. Is the
unit on the other end powered
and working?
Set internal switch to +40db
Set internal switch to 0db
Connect to ext. power source
of 13.8-24VDC for 16 hrs.
Check battery connection.
Replace battery if necessary.