To Configure The A20 Digital Motherboard And Bios (For Serial Prefix My433 And Later); To Identify The Motherboard Installed; Configure The Motherboard; Testing Dram On The Motherboard - Agilent Technologies E4991A Service Manual

Troubleshooting
To Configure the A20 Digital Motherboard and BIOS (for serial prefix MY433
and later)
To Configure the A20 Digital Motherboard and BIOS (for
serial prefix MY433 and later)
When you replace the A20 digital motherboard, you need to confirm the jumper settings
for the specific CPU installed. The jumper settings information is provided in "Configure
the Motherboard" on page 210.
You also need to confirm the BIOS options using the BIOS setup utility procedure. The
BIOS setup procedure is described in "To Confirm or Set the BIOS Options" on page 211.

To Identify the Motherboard Installed

Confirm the splash screen is displayed in the beginning of the boot process as shown in
Figure 4-15.

Configure the Motherboard

There is a jumper on the A20 digital motherboard that must be configured to the correct
setting. Confirm that the jumper setting is "Normal" as shown in Figure 4-43.
Figure 4-43 A20 digital motherboard jumpers location and settings

Testing DRAM on the Motherboard

When the A20 digital motherboard is replaced with a new one, it is advisable to perform
the DRAM test before proceeding to the BIOS setup utility procedure. Confirm the DRAM
count in accordance with the following procedure.
210 Chapter 4