User guide

Appendix C: Troubleshooting
CommPlete 4000 Server SBC, Model IPC-551 79
Appendix C:
Troubleshooting
C-1 Introduction
This appendix outlines errors that may occur during system operation
and likely remedies for these problems.
C-2 Troubleshooting with Error Messages
This section describes error messages and their use in
troubleshooting. Since many errors can be caused by poor cable
connections, you should verify that all cables have been connected
firmly to their proper receptacles. If error messages persist after the
recommended adjustments have been made, contact MultiTech
Systems for maintenance.
Post Beep: The BIOS generates two beeping (audible) error codes.
(1) A single long beep followed by three short beeps indicates
that a video error has occurred and the BIOS cannot initialize
the video screen to display any additional information.
(2) A single long beep sounded repeatedly indicates that a
DRAM error has occurred.
CMOS Battery Failure: If the CMOS battery is low or dead, it should
be replaced. The battery is located inside the real-time clock chip.
Replacement requires soldering. The user should return the IPC-551 to
MultiTech Systems for repair if the clock fails.
CMOS Checksum Error: This error indicates that the CMOS has
been corrupted. Corruption may be caused by a weak battery.
Display Switch Is Set Incorrectly: The display switch on the
motherboard can be set to either monochrome or color. This error