Controller - Motorola iDEN Site Controller System Manual

Gen 3 Site Controller System Manual

Controller

Table 7-1 Controller Troubleshooting
Indication
status gps MMI command response:
Satellite tracking mode on all
channels is less than 8.
status gps MMI command response:
S/N numbers of mode 8 satellites are
less than 25.
ping gps MMI command indicates no
satellites tracked.
Slow handovers.
Power LED is not lit
Controller can't communicate over
ethernet
LOS/OOF LED is lit
(Loss of Signal / Loss of Frame)
68P80801E30-A 5/1/2002
Possible failure
Antenna, cables, surge
arrestors, RFI
Antenna, cables, surge
arrestors, RFI
Open or damaged GPS
antenna, lead-in, or surge
arrestor
Open or damaged GPS
antenna, lead-in, or surge
arrestor
Open 5 MHz cable or missing
termination of 5 MHz cable
No power to Controller
Cabling
Controller failure
Ethernet cabling or
terminations
Controller failure
T1 / E1 cabling
Controller failure
Chapter 7 System Troubleshooting
Corrective action
• Check antenna, cables, and surge
arrestors before replacing the
Controller.
• If antenna installation is OK, suspect
intermodulation desensitizing.
• Check antenna, cables, and surge
arrestor before replacing the
Controller.
• If antenna installation is OK, suspect
intermodulation desensitizing.
• Verify GPS antenna, lead-in, and surge
arrestor.
• Verify GPS antenna, lead-in, and surge
arrestor.
• Check for open 5 MHz cable and
missing termination of 5 MHz cable.
• Check power source
• Check power cabling to Controller. If
necessary, replace cabling.
• Replace the Controller.
• Check cabling. Verify that each end of
the cable has a 50-ohm termination.
• Replace the Controller.
• Check cabling to Controller. If
necessary, replace cabling.
• Replace the Controller.
Controller
7-3