Fault Diagnosis Release 04/02
6-2 Panel PC 670 Computing Unit, Equipment Manual
6.1 Problems Using External Modules

Fault screen

Computing unit crashes during boot routine.

Cause

The following causes are possible:
–Double assignment of input/output addresses,
–Double assignment of hardware interrupts and/or DMA channels,
–Signal frequencies or signal levels are not maintained,
–Deviating assignment of the connector

Remedy

Checking the computer configuration:
SIf the computer configuration corresponds to state on delivery, please contact
your technical service department.
SIf the computer configuration has been modified, restore the state on delivery;
to do this, remove the external modules and restart the computer:
–If the computing unit crashes again, contact the technical service
department.
–If the fault no longer occurs, the external module used was the cause of the
fault. Replace the module with a Siemens module or get advice from the
supplier of the external module.