Troubleshooting
7.1 General problems
SIMATIC Rack PC 647B
Getting Started, 12/2008, A5E02147333-01
31
Error displays on the front panel
Front LED
Possible cause
For details about the error display, see the operating
instructions:
Red WATCHDOG LED is lit
Watchdog has triggered
Section "Watchdog (WD)"
Red TEMP LED is lit
Excess temperature in the device
Section "Temperature monitoring / display
Red FAN LED is lit
Fan failure
Section "Fan monitoring"
Red HDD1 ALARM LED is lit
RAID reports that hard disk 1 is
defective
Section "RAID monitoring"
Red HDD2 ALARM LED is lit
RAID reports that hard disk 2 is
defective
Section "RAID monitoring"
Red HDD1 ALARM and HDD2
ALARM LEDs are flashing
RAID is in the "rebuild" state
Section "RAID monitoring"
Red HDD1 ALARM and HDD2
ALARM LEDs are lit
RAID system is not ready for
operation: Affected drive must be
determined with the help of the
RAID software.
Section "RAID monitoring"
Red SF PROFINET LED is lit A fault has occurred on the CPU
1616 onboard interface
Section "CP 1616 onboard communications
processor"
All front-panel LEDs are
constantly lit
Error in early BIOS-POS
In this case, contact Technical Support.
Aotewell Ltd
www.aotewell.com
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