Jumper Descriptions - Sun Microsystems Sun Blade 150 Service Manual

FIGURE C-4
TABLE C-2
Connector
J501
J502
J503
J504
C.4

Jumper Descriptions

There are two jumpers that can be configured, the CPU speed jumper J3, and the
PROM jumper J2. See "OpenBoot PROM Jumpers CPU Speed Selection" on
page C-14, or Section 8.5.2, "Replacing the Motherboard" on page 8-14.
Jumper configurations can be changed by setting jumper switches on the
motherboard. The motherboard jumpers are preset at the factory. For more
information on CPU jumper settings, see Section 8.1.2, "Replacing the CPU" on
page 8-3.
A jumper switch is closed (sometimes referred to as shorted) with the plastic cap
inserted over two pins of the jumper. A jumper is open with the plastic cap inserted
over one or no pin(s) of the jumper.
J501
J502
J504
J503
Riser Board Layout Diagram, Side 2
Riser Board Connectors, Side 2
Description
Power supply connector
IDE drive power connector
Secondary IDE channel connector
Primary IDE channel connector
J505
IDE 1
IDE 2
Appendix C Functional Description C-5