ADLINK NuPRO-900A Dual Xeon ePCI-X Motherboard Deployment Guide

Clock and termination: M66EN and PCIXCAP pins are used to configure PCI mode (33/66MHz or PCI-X 66/100/133).

Bus Master: Each bus provides 4 pairs of REQ #/GNT # and supports multiple master devices.

ATX power control: The board supports PSO #, PWRBT #, and+5Vaux, but if the backplane does not provide+5Vaux, the soft switch function will fail and an external hard switch will be required.

Fan speed feedback: The board connects the FAN speed signal to the reserved pin P1 A15. If the backplane supports it, the signal level needs to be converted to 3.3V.

Hot swappable: This board does not support PICMG 2.1 hot swappable, and power must be turned off before insertion or removal.

Geographic address: The board does not rely on the backplane GA signal, and the IPMB address is fixed.

Common troubleshooting and maintenance suggestions

Possible causes and solutions for the fault phenomenon

No display on power, CPU not installed or heat sink not in contact. Check the installation of CPU locking rod and heat sink, and confirm the fan connection

Memory cannot recognize unpaired installations or two mismatched memory units using the same model and capacity. Please prioritize inserting DM1/DM2

The rear serial port has no output. The serial port adapter bracket is not connected or there is an IRQ conflict. Check the cable connection and confirm the COM address and IRQ in BIOS

IDE devices do not recognize conflicts between master-slave settings or reversed wiring. Check jumper wires to ensure Pin1 alignment

Gigabit network card not working. Driver not installed or MAC conflict. Install Intel 82546EB dedicated driver. Check if LAN is enabled in BIOS

The watchdog does not trigger a reset. WDT is not enabled or the timeout value is set improperly. Check if WDT is enabled in the BIOS and confirm that the application is feeding the dog normally

System overheating, shutdown, insufficient heat dissipation or poor air duct to ensure the operation of dual CPU heat sinks and chassis fans, with an ambient temperature of 5-55 ℃

BIOS settings cannot save CMOS battery failure, replace onboard lithium battery (CR2032 model)