Instruction manual

Chapter 4 Diagnostics and Troubleshooting RIC-E3/ETH, RIC-T3/ETH Installation and Operation Manual
4-2 Troubleshooting Instructions
4.2 Troubleshooting Instructions
In case a problem occurs, refer to Table 4-1 for the troubleshooting procedures.
Perform the actions listed under Corrective Measures in the order given in the
table, until the problem is corrected.
Table 4-1. Troubleshooting Chart
Trouble Symptoms Probable Cause Corrective Measures
PWR indicator is OFF No AC power
• Verify that the power outlet is providing the
required power.
• Ensure that the both ends of the power cable are
connected properly.
Blown fuse Replace with a fuse of correct rating
ELECTRICAL LOW
indicator is ON
One of the E3/T3 coaxial
cables is defective or
disconnected
Ensure that both ends of the E3/T3 coaxial cables are
connected correctly and that the cables function
properly.
Attached equipment
outputs do no comply
with G.703 electrical
levels
Check that the output levels of the equipment
attached to the E3/T3 interface comply with G.703.
JP2 is set incorrectly Correct the JP2 settings according to Table 2-1.
ELECTRICAL AIS
indicator is ON
Attached equipment
transmits "All 1s" string
Check the equipment attached to E3/T3 interface,
ensure that it transmits real data.