Product specifications
Section 5 Maintenance AF 100 Interface - CI869
3BSE036351-510 A 229
F(ault) LED is ON Possible Cause 1: The CI869 module is in the 
process of upgrading the firmware (if the upgrade is 
in progress).
Corrective Action 1: Wait for the firmware to be 
upgraded.
Possible Cause 2: Fault in the CI869 module. 
Corrective Action 2: Hot remove and hot insert the 
CI869 module.
Corrective Action 3: If the indication persists after 
performing the corrective actions 1 and 2, then 
replace the CI869 module.
Rx LED is ON (without 
flashing)
The CI869 module is operational, and it is receiving 
and transmitting data.
Rx LED is flashing with 
less frequency
Possible Cause 1: The twisted wire pair (TWP) is 
not connected or it is not connected properly to the 
4-pin contact.
Corrective action 1: Check the TWP connections.
Rx LED is flashing with 
50% more frequency than 
when the TWP is not 
connected
Possible Cause 1: The configuration is not 
downloaded from the Hardware Tree (in the Control 
Builder) to the controller.
Corrective Action 1: Ensure that the CI869 module 
is configured in the Hardware Tree for the correct 
position and the configuration is downloaded to 
controller.
Rx LED is flashing with 
75% more frequency than 
when the TWP is not 
connected
Possible Cause: At least one of the configured 
DSPs does not respond when polled.
Corrective Action: Configure the DSPs correctly.
Table 44. AF 100 Interface, CI869 - Indications and Fault Finding
Indication Possible Cause and Corrective Action (for faults)










