Nortel DCT1900 Technical Product Manual page 388

Technical Product Manual - DCT1900
Maintenance, Fault Finding Procedures
COMMON USER
COMPLAINT
All Portables
Yes
out of range?
No
Portables
of one area out Yes
of range?
No
Complaints
come from same Yes
area?
No
Blocked calls? Yes
No
INDIVIDUAL USER
COMPLAINT
6-6
1) A malfunctioning Base Station can be detected by:
2) When going off hook on the Portable Telephone, the hook symbol
Green LED on
all Boards on?
Yes
CPU
PSU of associated
cabinet
Poor coverage of an area
caused by lack of Base
Stations, a malfunctioning
Base Station or no air
interface synchronization
between adjacent systems
Lack of resources in
Base Stations or SPUs
testing the Base Station with the Portable Telephone in the
Service Display Mode (see Paragraph 3.8) or
checking the load of the Base Station by System Manager-
Statistics-Display-Station-Station Load or
checking the operation of the Base Stations by System
Manager-Statistics-Settings-View on Line
on the display does not become stable and the Portable
Telephone automatically goes on hook.
No
Check fuses at
power switch
Check power
source
Fuses and
Replace fuse or repair
power source No
power source
okay?
Yes
Replace Backplane
Maint-DCT1900/R8/mw
© 2000-2005