Siemens SIMATIC Rack PC 840 Manual page 104

Error Diagnosis
Error Message on the Screen
Operating system not found
Previous boot incomplete
Default configuration used
System cache error
Cache disabled
Monitor type does not match
CMOS
Run SETUP
System timer error
Real time clock error
Keyboard controller error
6-6
Meaning/Suggestion
Possible causes:
No operating system present
Incorrect drive addressed (diskette in drive A/B)
Incorrect active boot partition
Incorrect entries in SETUP for the BOOT drive
Abort of the previous BOOT procedure, for example, due to a power
failure. Check the hardware settings and the SETUP.
Error in the CPU's cache module.
Contact your technical support team.
The monitor does not match the SETUP entries.
Adapt the SETUP entries to the monitor.
Hardware error
Contact your technical support team.
Clock chip error
Contact your technical support team.
Keyboard error
Contact your technical support team.
SIMATIC Rack PC 840 Manual
A5E00104826-03