Power Supply Test - Sun Microsystems Sun Blade 100 Service Manual

2. At the system ok prompt, type:
ok% reset-all
ok% probe-ide
If the hard drive responds correctly to the probe-ide command, the message
shown in
system EIDE controller has successfully probed the device. This is an indication
that the motherboard is operating correctly.
If an optional hard drive is installed and one drive does not respond to the EIDE
controller probe but the other does, replace the unresponsive drive.
If the probe-ide test fails to show the device in the message, replace the drive
(see Section 7.3 "Hard Drives" on page 7-5). If replacing the hard drive does not
correct the problem, replace the motherboard.
4.4

Power Supply Test

This section describes how to test the power supply.
TABLE B-1
1. Power off the system, remove the system cover, and attach an antistatic wrist strap
as described in Chapter 5 "Preparing for Component Removal and Replacement."
2. Disconnect the ribbon cables from the riser board to expose connector J501.
3. Defeat the power interlock.
4. Power on the system.
See Chapter 9 "Finishing Component Replacement."
Caution – With the system cover removed and the system powered on, there is
unprotected access to voltage and energy levels that are potentially hazardous to
equipment and personnel. If you are unsure how to safely proceed, please seek the
assistance of qualified service personnel.
5. Using a digital voltage meter (DVM), check the power supply output voltages as
follows:
Note – Power supply connector J501 must remain connected to the riser board.
4-4 Sun Blade 100 Service Manual • October 2000
CODE EXAMPLE 4-4
on page B-2 describe power supply connector J501.
on page 4-8 is displayed, which means that the
on page B-1 and
FIGURE B-1