Hot-Swap Power-Supply Led Errors - IBM 88371RU Maintenance And Troubleshooting Manual

Hot-swap power-supply LED errors

Use the information in this section to solve power-supply problems.
Note: The minimum configuration required for the dc good light to be lit is:
Note: See "System replaceable units" on page 122 to determine which components should be replaced by a field
service technician.
AC good DC good
LED LED
Off Off
On Off
On On
96
xSeries 336 Type 1879 and Type 8837: Hardware Maintenance Manual and Troubleshooting Guide
v Power supply
v Power cage assembly, if installed.
v System board (use jumper J40 to bypass the power switch; see
"System-board jumpers" on page 62).
Description FRU/action
No power to system or
1. Check ac power to the system.
ac problem.
2. Power supply.
Standby mode or dc
1. Make sure power backplane is installed correctly.
problem.
2. Bypass power control button by placing a jumper momentarily
3. Remove the adapters and disconnect the cables and power
4. Power backplane.
5. Power cage assembly, if installed.
6. System board.
Power is working N/A
properly.
on jumper block J40 (see "System-board jumpers" on page
62).
Note: Do not allow the jumper to remain on jumper block
J40 for more than three seconds.
If the dc good LED is lit, press Ctrl+Alt+Delete. Watch the
screen for any POST errors. Check the system error log for
any listed problems. If the system starts with no errors:
a. Power switch assembly
b. System board
connectors to all internal and external devices. Turn on the
system. If the dc good LED is lit, replace the adapters and
devices one at a time until you isolate the problem.