Chapter 7: Error messages
7-28 Fresenius Medical Care 4008 S (Version V10) SM-EN 7/01.13
7.3 Error messages after turning power on
Error message Description
ROM ERROR System error.
Execute software update (MDC-II).
Change the MDC-II board, if required.
BIOS ERROR System error.
Change the MDC-II board, if required.
BRAM #XXX XXXX XXXX System error.
Turn the device off and back on again, initialize the NOVRAM.
Then recalibrate or load the current NOVRAM data.
RAM ERROR System error.
Turn the device off and back on again.
Change the MDC-II board, if required.
Keyboard Error Short-circuit on the keyboard.
Turn the device off and back on again.
Check the plugs for proper connection, possible short-circuit on the keys,
change the front panel, if necessary.
Watchdog Error This error message can only be displayed shortly after turning power on.
Turn the device off and back on again.
Check the WD relay and components. Check CPU2/CPU1.
Check the plug connectors on the monitor.
XX (not calibrated) NOVRAM error upon test request.
Turn the device off and back on again.
Recalibrate the function indicated.
NTC 109 switched off No valid value has been filed during start in the NOVRAM. The temperature
difference between NTC109 and NTC3 is too high.
Switch off NTC 109 in the SETUP MENU, or recalibrate the temperature.