Clear Cmos (J6D1); Bios Setup Access (J6D1); Bios Recovery (J6D1); Reliability - Intel VS440FX Technical Specification

1.13.3 Clear CMOS (J6D1)

This jumper resets areas of non-volatile, Flash, and CMOS memory to default values. The default
setting for this jumper is pins 20-22 (keep CMOS settings). To reset the CMOS settings to the
default values, turn off the computer, move the jumper to pins 18-20, then turn on the computer.
When the computer displays the message "NVRAM cleared by jumper," turn off the computer and
return the jumper to pins 20-22 to restore normal operation.

1.13.4 BIOS Setup Access (J6D1)

This jumper enables or disables access to the Setup program. The default setting is pins 28-30
(access enabled). To disable access to the Setup program, move the jumper to pins 26-28.

1.13.5 BIOS Recovery (J6D1)

This jumper lets you recover the BIOS data from a diskette in the event of a catastrophic failure.
The default setting is pins 4-6 (normal operation). To recover the BIOS, turn off the computer,
move the jumper to pins 2-4, then turn on the computer to perform BIOS recovery. After recovery,
turn off the computer and return the jumper to pins 4-6 to restore normal operation. Refer to
Section 3.14 for more details.

1.14 Reliability

The Mean-Time-Between-Failures (MTBF) data is calculated from predicted data @ 55 C.
Motherboard MTBF:

1.15 Environmental

Table 5.

Motherboard Environmental Specifications

Parameter
Temperature
Non-Operating
Operating
Vibration
Unpackaged
Packaged
61534 hours calculated
Specification
-40 C to +70 C
+0 C to +55 C
5 Hz to 20 Hz : 0.01g² Hz sloping up to 0.02 g² Hz
20 Hz to 500 Hz : 0.02g² Hz (flat)
10 Hz to 40 Hz : 0.015g² Hz (flat)
40 Hz to 500 Hz : 0.015g² Hz sloping down to 0.00015 g² Hz
Motherboard Description
35