Defective Power Supplies - Sun Microsystems Enterprise 3500 System Reference Manual

10.6

Defective Power Supplies

The power/cooling modules (PCMs) are hot-pluggable.
Caution – Boards in slots adjacent to a PCM may overheat if the supply is removed
and not replaced. The PCM provides cooling air to two board slots.
Caution – Do not hot-plug boards or modules if the AC/peripheral power supply
is defective. The hot-pluggable feature requires a working peripheral power supply/
AC for precharge current.
Begin INDICATION
Peripheral power supply:
System error
message
Peripheral device
fails
PCM:
System error
message
Board fails
End
FIGURE 10-6
TEST/PROCEDURE
Verify module is ready:
Green LED off.
Yellow LED may be on.
Before replacing any other
hot-pluggable devices, replace
faulty peripheral power supply
to ensure availability of
precharge current.
Verify PCM is ready:
Green LED off.
Yellow LED may be on.
Diagnosing Power Supply Problems
Chapter 10 Flow Diagrams for Troubleshooting
REFERENCE
See Section 7.4
"Peripheral Power
Supplies."
See Section 7.5.4
"Replacing a PCM."
10-7