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Digital VENTURIS Pentium PC
Service Procedures
MCS Logistics Engineering - Nijmegen
39
Main Logic Board Jumpers
Jumper pins allow to set specific computer parameters. They are set by changing the pin location of jumper
blocks. Note that the square pin of each jumper block is pin 1. A jumper block is a small plastic-encased
conductor (shorting plug) that slips over the pins. To change a jumper setting, remove the jumper from its
current location. Place the jumper over the two pins designated for the desired setting. Press the jumper
evenly onto the pins. Be careful not to bend the pins.
CAUTION
Do not touch any electronic component unless you are safely grounded. Wear a
grounded wrist strap or touch an exposed metal part of the system box chassis. A static
discharge from your fingers can result in permanent damage to electronic components.
VENTURIS 560 Models Main Logic Board Jumper Settings
Settings shown in
bold italics
are factory defaults.
Feature
Description
Setting
Discharge
Normal
Clear CMOS
J22, pins 1 and 2 jumpered
J22, pins 2 and 3 jumpered
Password clear
Password clear (MFG test)
Normal mode
J24, jumpered
J24, open
Recovery mode
Recovery mode
Normal
J25, jumpered
J25, open
VENTURIS 560 Models Main Logic Board Jumper Locations
Figure 3 - 8 VENTURIS 560 Main Logic
Board Jumpers Locations
1 2 3
J22
J25
J24