Troubleshooting
13.2 Problems when Using Modules of Third-party Manufacturers
SIMATIC Rack PC 840 V2
13-2
Operating Instructions, Edition 05/2006, A5E00248055-04
Problem
Possible causes
To correct or avoid error
The USB ports are
disabled in your BIOS.
Use a different USB port or enable the port.
USB 2.0 device
connected but USB 2.0 is
disabled.
Enable USB 2.0.
USB device not
responding.
Operating system does
not support the USB port.
Enable USB Legacy Support for the mouse and keyboard.
For all other devices you need USB drivers for the specific operating
system.
DVD: The front loader
does not open.
The device is switched off
or the open/close button
is disabled by a software
application.
Emergency removal of the data medium:
1. Switching off the device
2. Insert a pointed object, a pin for example, or an opened paper clip
into the emergency extraction opening of the drive. Apply slight
pressure to the contact until the front loader opens.
3. Pull the loader further out.
13.2
13.2
Problems when Using Modules of Third-party Manufacturers
Problem
Possible causes
To correct or avoid error
Check your computer configuration:
•
If the computer configuration corresponds with factory state,
please contact your technical support team.
•
If the computer configuration has changed, restore the
original factory settings. Remove all third-party modules,
then restart the PC. If the error no longer occurs, the third-
party module was the cause of the fault. Replace this
module with a Siemens module or contact the module
supplier.
•
Force a “Reset Configuration” using the BIOS setup.
•
I/O addresses are assigned
twice.
•
Hardware interrupts and/or DMA
channels are assigned twice.
•
Signal frequencies or signal
levels are incorrect.
•
Connector assignments deviate.
•
“Reset Configuration” in BIOS
SETUP has not been carried
out.
If the PC still crashes, contact your technical support team.
The PC crashes
during startup
•
If the performance of the
external 24 V power supply is
insufficient
•
use a larger power supply.
