Error Diagnosis and Reinstallation
6-6 SIMATIC Box PC 620 Operating Manual
C79000-Z7076-C638-04
Error Message on the Screen Meaning/Suggestion
Incorrect Drive B type
Run SETUP Check the SETUP entries for drive B.
Diskette drive A error Error accessing drive A.
Contact your technical support team.
Diskette drive B error Error accessing drive B.
Contact your technical support team.
Failure Fixed Disk Error accessing the hard drive.
Check the SETUP settings
Contact your technical support team.
Keyboard error Check whether the keyboard is connected correctly.
Stuck Key Check whether a key on the keyboard is stuck.
System RAM Failed at offset: Memory error
Contact your technical support team.
Shadow RAM Failed at offset: Memory error
Contact your technical support team
Extended RAM Failed at offset: Memory error
Contact your technical support team
Failing Bits: Memory error
Contact your technical support team
Operating system not found 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
Previous boot incomplete
Default configuration used Abort of the previous BOOT procedure, for example, due to a power
failure. Check the hardware settings and the SETUP.
System cache error
Cache disabled Error in the CPUs cache module.
Contact your technical support team.
Monitor type does not match
CMOS
Run SETUP
The monitor does not match the SETUP entries.
Adapt the SETUP entries to the monitor.
System timer error Hardware error
Contact your technical support team.
Real time clock error Clock chip error
Contact your technical support team.
Keyboard controller error Keyboard error
Contact your technical support team.
6.7 No Connection via COM1/TTY Possible
Cause and Remedy

The COM1 interface is set to the V24 mode. In the Setup menu Advanced >

COM/LPT Configuration set the parameter COM1 TTY to enabled.