Manual for R630/R640; M440/M450

Manual for R630/R640; M440/M450

Brand: SIEMENS

Category: Control Unit

Document Type: Manual

Language: EN

Uploaded: Nov. 21, 2025, 7:02 p.m.

Manual Publish Date: 2007-02-08

Warranty Information

None

Basic Operation Summary

This manual provides hardware troubleshooting procedures for Celsius R630/R640 and M440/M450 computers. It details the use of BIOS functionality and the "DIFS16P" diagnostic software. The document covers general information, device indicators, BIOS settings for booting the DIFS tool, and troubleshooting steps for BIOS and DIFS16P. It also includes sections on cleaning the workstation and important notes regarding component handling and ESD precautions.

Key operations include:

  • Booting the computer from CD using DIFS16P.
  • Navigating BIOS settings to change boot sequence.
  • Running DIFS16P diagnostics at different levels (Level 1, Level 2).
  • Interpreting diagnostic results and known issues.
  • Proper cleaning procedures for the workstation.

Troubleshooting and error codes

Issue Description Location/Action
Defective hard disk not detected by DIFS Sometimes DIFS is not able to detect a defective hard disk. Check hard disks during boot operation. Press "Pause" when the SCSI BIOS screen appears.
BIOSLOG-Errors Logged failures from the past. Indicate potential issues. Go to FreeDOS Prompt, type "bioslog -clear", restart PC and run DIFS again.
Fan Issues Fans not running or RPM value not shown. Check "Hardware Monitoring" or "System Management" in BIOS. Visually inspect fans.
Power Supply Issues Unstable system, voltage outside permissible range (±5%). Check VCC 5V, VCC 12V (or WB 5V, WB -12V, WB 12V) in BIOS.
Lithium Battery Issues Battery value less than 3V. Check battery value in BIOS, replace if necessary.
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