2 link diagnostic procedure – CANOGA PERKINS 2262 T1/E1 Fiber Optic Modem User Manual

Page 18

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18

Canoga Perkins

2262 T1/E1 Fiber Optic Modem

4.2.2 Link Diagnostic Procedure

Symptom

Step

Possible Cause

Remedy

Tx LED is off

1

Reversed data input and

Swap T1/E1 data input

output connection.

and output cable
connection.

2

No data input at

See Section 4.2.3,

metallic interface.

Loopback Diagnostic
Procedure, step 1.

Tx LED is off

3

Unit failed.

Return to factory for
repair.

Rx LED is off

1

Reversed optic transmit

Swap the optic transmit

and receive connection.

and receive cable
connection.

2

Local or remote side

See Section 4.2.3,

system or fiber optic

Loopback Diagnostic

link failure.

Procedure, steps 2 to 4.

High error rate

1

Bad optical connection.

Clean the optic connec-
tor end surface.

2

Local or remote side

See Section 4.2.3,

system or fiber optic

Loopback Diagnostic

link failure.

Procedure, steps 1 to 4.

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