Toshiba Equium 5160D Series Preliminary Maintenance Manual page 132

Models 5160D and 5200D Jumper Settings
There are three jumper blocks on the CU430HX system board (Models 5160D and 5200D).
The jumper block at J4G1 defines the number of PCI slots (two or three slots) available on the
riser board used with the system board. The jumper block at J6C2 sets the Flash memory to
either normal or recovery mode of operation. The jumper block at J5B1 is only used to
provide power for processors using MMX technology. The jumper block at J1K2 defines a
range of microprocessor and system board configuration parameters. Figure C-1 shows the
jumper block locations on the system board, and indicates how jumper placement corresponds
to the value defined by the system board silk-screening.
Figure C-27 Models 5160D and 5200D Jumper Locations
The jumpers on the CU430HX system board perform the following functions:
• Allow the system board to be switched between the different frequencies of the
Pentium processor. Selecting a processor speed (and multiplier) also changes the
Host Bus, PCI Bus, and ISA Bus frequencies.
• Changes output of the onboard voltage regulator and changes power routing to
support different processor types.
• Controls clearing or normal operation of the password and CMOS.
• Enables or disables the system board setup.
TM
Equium Series Maintenance Manual ----------------------------------------------------------- C-1