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Instruction Manual
IM-106-5500, Original Issue
August 2005
6-3
CCO 5500
Table 6-2. Configuration
Problems
No display on signal processor
Possible Cause Test Result Action
Mains input failure Check 110/220V
selection switch in
power supply
Setting correct Proceed to next test
Setting incorrect Change setting &
proceed to next test
Check power indication
LED in power supply
LED illuminated Mains OK - proceed to
next possible cause
LED not
illuminated
Proceed to next test
Check fuse in power
supply
Fuse OK Proceed to next
possible cause
Fuse blown Replace fuse
Power supply failure Check power rail LEDs
in signal processor
All LEDs
illuminated
Supplies OK -
proceed to next
possible cause
LEDs not
illuminated
Proceed to next test
Check fuse in signal
processor
Fuse OK Proceed to next
possible cause
Fuse blown Replace fuse
Connection Problem Check wiring between
signal processor &
power supply
Wiring OK Proceed to next test
Incorrect wiring Correct wiring
Check ribbon cable
connections in signal
processor
Connections OK Proceed to next
possible cause
Connections
loose
Secure connections
Signal processor
failure
- - Contact your
Rosemount Analytical
supplier
Display nonsense on signal processor
Possible Cause Test Result Action
Micro-processor fault Reset by interrupting
mains supply
Fault clears No further action
Fault continues Proceed to next
possible cause
Program
corruption/faulty micro
PCB
- - Contact your
Rosemount Analytical
supplier