Configure The Motherboard - Agilent Technologies E4991A Service Manual

Troubleshooting
To Configure the A20 Digital Motherboard and BIOS (for serial prefix JP1KH,
JP2KH, and MY432)

Configure the Motherboard

There are several jumpers on the A20 digital motherboard that must be configured to the
correct settings for the AMD-K6/2-400MHz microprocessor as shown in Table 4-5 to
Table 4-12. Figure 4-34 shows the A20 digital motherboard jumpers location.
Table 4-5 JP1
Table 4-6 JP2
Table 4-7 JP3 CPU Speed (AMD-K6/2E-400MHz)
Table 4-8 JP4 BUS Clock (66MHz)
Table 4-9 JP7 BIOS Write Protect (Non Writable)
Table 4-10 JP9 CMOS Reset (Normal)
Table 4-11 JP10 CPU Voltage Selection (2.2V)
Table 4-12 JP11 Power On Select
198
1-2 2-3
OFF ON
1-2 3-4
ON OFF
1-2 3-4
ON OFF
1-2 3-4
OFF OFF
1-2 2-3
ON OFF
1-2 2-3
ON OFF
1-2 3-4
OFF ON
1-2 2-3
ON OFF
5-6 7-8
OFF OFF
5-6
OFF
5-6
ON
5-6 7-8
OFF OFF
Chapter 4