Sun Microsystems SunSwift SPARCserver 1000, Service Manual

Page: 67 / 218

Troubleshooting Flow Diagrams 3-3
3
Figure 3-2 Branch A: Physical Inspection
A
No
Yes
No
No
Yes
Check for physical damage to monitor, chassis, and cables.
Ensure that cables and AC cord are securely connected.
Ensure voltage is120-240 Vac.
Is there AC power
inside chassis?
Check AC power
switch (system rear).
Ensure boot EPROMs are seated on
system board(s).
Reseat system boards in backplane.
Move system board to different slot.
Replace system board.
Replace system board.
Swapping board slots may give
inconclusive results, particularly for the
system master, which requires special
handling and configuration.)
Can POST
diagnostics run?
B
Yes
Is the system
running?
Physical Inspection
No
A.1
Check Fan Tray:
Turn key switch on.
Turn key switch to diagnostic position.
Do the fans turn?
Read system logbook,
if available.
Yes
Run
prtdiag
.
Run POST.
B
Yes
Can POST
diagnostics run?
No
Yes
Are DC LEDs OK
on front panel?
No
Replace DC power supply if
necessary.
Replace control board if
necessary.
Ensure SPARCserver 1000 and SPARCserver 1000 systrem boards are
not intermixed in the card cage. Use Sun part numbers to distinguish
between the two — refer to Chapter 12. System board types must all
match the control board type.