Installation Manual Part 7

FCC ill: CDG-ARTU EXHIBIT C
MAGNASTAR C-2000 DIGITAL AIRBORNE TELEPHONE SYSTEM
The status code handset text message shown below will be displayed for abnormal call releases
due to software coding problems or unanticipated race conditions. This screen would not indicate
a hardware problem
Status
Code
xxx
Redial
The check CDBR cabling handset text message as shown below will be displayed when the ARTU
detects a synchronization problem on the LAN bus between the ARTU and the LAN repeaters.
Typically this fault condition occurs because of cabling problems. The most common cause of
this problem are wrong wiring or pinched wiring in the backshell. The ARTU and LAN repeaters
can also be damaged if a LAN repeater is inadvertently connected up backwards, resulting in the
same type of fault. LAN repeaters can be damaged if no cable strain relief is provided in the
installation and may cause intermittent operation or latent faults. See paragraph 9.1.8 and 9.2.1 for
MMT troubleshooting test for intermittent fault testing.
RevB
9-34