User's Manual

Table Of Contents
Problem Possible cause Troubleshooting
Switch/router defective Check operating state via LEDs on
switch/router
Call setup/registration not pos-
sible
Transmitting/receiving antenna
defective
Check antenna
Cable connection defective Check wiring of antenna(s) incl. antenna
cable
Check internal wiring
Carrier disabled Check status of carrier in the NMC-511
FaultManager
Carrier incorrectly configured Check configuration in the NMC-515
ConfigurationManager
Carrier defective Check status of carrier in the NMC-511
FaultManager and replace as required
No subscriber data available
on the base station
Check status in the NMC-511 FaultMan-
ager and, if necessary, in the NMC-515
ConfigurationManager
Subscriber unknown Check subscriber configuration in the
NMC-512 SubscriberManager
No authorization for call serv-
ices
Mobile station incorrectly con-
figured
Check configuration of mobile station
Mobile station defective Check mobile station
No GNSS signal GNSS antenna defective Check antenna
No unobstructed visibility of
the sky
Check installation location of the GNSS
antenna
Cable connection defective Check plug connections and antenna
cable
BSCU/CHU/HCU not ready for
operation
Electrical connection to back-
plane defective
Install insert correctly
PSU/PSM defective with V
AC
voltage supply
Check PSU/PSM
"ALM" LED is on Checking operating state in the NMC-511
FaultManager
Insert defective, e.g. BSCU,
CHU, HCU
Electrical connection to back-
plane defective
Check connection to backplane
Voltage supply missing Check voltage supply
Fan unit not (completely)
operational
Electrical connection to back-
plane defective
Check connection to backplane
PSU/PSM defective with V
AC
voltage supply
Check PSU/PSM
Troubleshooting
DIB-R5 advanced
86 Operation Manual 90DIBR5advancedOM02 - 1.0