Power-Supply Led Errors - IBM Xseries 345 8670 Maintenance Manual

Note: See "System" on page 116 to determine which components should be replaced by a field service technician.
Software problem
Symptom
Suspected software problem.
Note: See "System" on page 116 to determine which components should be replaced by a field service technician.
Universal Serial Bus (USB) port problems
Symptom
A USB device does not work.

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" on page 116 to determine which components should be replaced by a field service technician.
AC good LED DC good LED
Off Off
100
xSeries 345 Type 8670: Hardware Maintenance Manual and Troubleshooting Guide
FRU/action
1. To determine if problems are caused by the software, verify that:
v The computer has the minimum memory needed to use the software. For
memory requirements, see the information that comes with the software.
Note: If you have just installed an adapter or memory, you might have a
memory address conflict.
v The software is designed to operate on the computer.
v Other software works on the computer.
v The software that you are using works on another system.
If you received any error messages when using the software program, see the
information that comes with the software for a description of the messages and
suggested solutions to the problem.
2. If you have verified these items and the problem remains, contact your place of
purchase.
FRU/action
v Verify that:
– You are not trying to use a USB device during POST if you have a standard
(non-USB) keyboard attached to the keyboard port.
Note: If a standard (non-USB) keyboard is attached to the keyboard port, the
USB is disabled and no USB device will work during POST.
– The correct USB device driver is installed.
– The operating system supports USB devices.
v Power supply
v Power cage assembly.
v System board (set switch 3 of SW1 to bypass the power switch; see
"System-board switches and jumpers" on page 47.
Description
No power to system or ac
problem.
FRU/action
1. Check ac power to the system.
2. Disconnect the ribbon cable from connector
J25 on the system board. If the AC power
LED comes on, see "Undetermined
problems" on page 111.
3. Power supply.