AOpen AX5TC User Manual page 92

8. If your CPU bus frequency is 66MHz, set the CPU external/bus frequency to
60MHz, but leave the CPU core/bus frequency ratio unchanged. Normally,
CPU with 66MHz bus frequency works properly at slower speed, e.g.,
60MHz. This will help you identify if the CPU is remarked or if the
mainboard or add-on card is unstable at 66MHz.
Keyboard, Mouse, Printer or Floppy is not working properly.
1. Check the cable and bracket.
connected to pin1 of the connector. Pin 1 of the flat cable is indicated by a
red-colored wire. Refer to section 2.3 "Connectors".
2. If possible, use another system to test the peripherals and cables. Check if
these are working properly.
3. If possible, use another peripheral to double check if the mainboard or the
cable is defective.
CMOS data lost, forget password.
1. Refer to section 2.2 "Jumpers". Locate the CMOS jumper and follow the
procedures on how to clear the CMOS. Load the BIOS optimal settings
(AMI) or load BIOS default settings (Award).
2. If your mainboard comes with a battery, simply change it. If your mainboard
comes with Dallas DS12887A compatible RTC, the occurrence of low
battery problem is very rare since RTC battery is expected to last for 7
years. In this case, you have to send the mainboard back to your
distributor.
Incompatible add-on card, peripheral, operating system, and
application.
1. Check all jumper settings according to section 2.2 "Jumpers".
2. Check if you have a Legacy ISA card (non PnP). If yes, set the IRQ and
DMA for this card to Legacy/ISA. Refer to Chapter 3 "PCI/PnP Setup"
section. If you are using a PnP operating system such as Win95, enable
the "Plug-and-Play Aware O/S" parameter in BIOS and let the OS configure
the system.
3. Disable all enhanced chipset features.
Features Setup" for details.
4. Disable the power management and USB functions. Some add-on cards,
drivers or applications are not compatible with these functions.
Troubleshooting
Make sure that pin 1 of the cable is
Refer to Chapter 3 "Chipset
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