Dell Precision 220 Service Manual page 38

31 RTCRST jumper
32 Battery socket
System Board Jumpers
Figure 26 shows the location of the jumpers on the system board.
Figure 26. System Board Jumper
Jumpers are small blocks on a circuit board with two or more pins emerging from them. Plastic plugs containing a wire fit down over the pins. The
wire connects the pins and creates a circuit.
NOTICE: Make sure your system is turned off before you change a jumper setting. Otherwise, damage to your system or
unpredictable results may occur.
To change a jumper setting, pull the plug off its pin(s) and carefully fit it down onto the pin(s) indicated.
Table 1. System-Board Jumper Settings
Jumper Setting
PSWD (default)
RTCRST
jumpered unjumpered
System Board Labels
Table 2 lists the labels for connectors and sockets on your system board, and it gives a brief description of their functions.
Table 2. System Board Connector and Socket Labels
Connector or Socket Label
AUX_LED
BATT
CD_IN
RIMM_x
DSKT
ENET
EXT_SPKR
FAN
IDEn
INTRUSION
KYBD
MONITOR
MOUSE
PANEL
PAR
Description
Password features are enabled.
Password features are disabled.
Real-time clock reset. Can be used for troubleshooting purposes.
Description
Hard-disk drive LED connector
Battery socket
CD-ROM audio interface connector
RIMM socket
Diskette/tape drive interface connector
Integrated NIC connector
External speaker connector
Microprocessor fan connector
EIDE interface connector
Chassis intrusion switch connector
Keyboard connector
Video connector
Mouse connector
Control panel connector
Parallel port connector; sometimes referred to as LPT1
Table 1 lists the system board jumpers and their settings.