About The Main Logic Board Jumpers - Sun Microsystems Enterprise 250 Owner's Manual

About the Main Logic Board Jumpers

The jumpers on the main logic board have the following functions:
J2604 and J2605 are used to configure the serial ports for either EIA-423 or
EIA-232D operation. For information about the EIA-423/232D jumper settings,
see "About Serial Port Jumpers" on page 64.
J2702, J2704, and J2804 are used to affect the operation of the flash PROM located
on the main logic board. For information about the flash PROM jumper settings,
see "About Flash PROM Jumpers" on page 65.
The illustration below shows the jumper locations on the main logic board.
Serial port
jumpers
62 Sun Enterprise 250 Server Owner's Guide • June 1998
J2604 J2605
Flash PROM
jumpers