Lenovo ThinkServer RD120 Manual de usuario descargar pdf (Pagina 77)

100

Universal Serial Bus (USB) port problems

v Follow the suggested actions in the order in which they are listed in the Action column until the problem

is solved.

v See the parts listing in the Hardware Maintenance Manual to determine which components are customer

replaceable units (CRU) and which components are field replaceable units (FRU).

v If an action step is preceded by “(Trained service technician only),” that step must be performed only by a

trained service technician.

Symptom Action

A USB device does not work.

1. Make sure that:

v The correct USB device driver is installed.

v The operating system supports USB devices.

Make sure that the USB configuration options are set correctly in the

Configuration/Setup Utility program menu (see the User Guide for more

information).

3. If you are using a USB hub, disconnect the USB device from the hub and

connect it directly to the server.

4. Move the device cable to a different USB connector.

Video problems

See “Monitor problems” on page 57.

Easy LED Diagnostics

Use Easy LED Diagnostics to diagnose system errors. The Easy LED Diagnostics

panel is behind the operator information panel, on the left front of the server. To

access the Easy LED Diagnostics panel, slide the release latch on the front of the

operator information panel to the left.

The following illustration shows the controls and LEDs on the Easy LED Diagnostics

panel.

DASD

NMI

PCI

PS1

PS2

CNFG

MEM

CPU

FAN

VRM

OVER SPEC

TEMP

REMIND

S ERR

Light Path

Diagnostics

RAID

BRD

To acknowledge a system error but not take immediate action, press the remind

button to place the server in Remind mode. When the server is in Remind mode,

the system-error LED on the front of the server flashes. If a new failure occurs, the

system-error LED is lit again.

Chapter 5. Solving problems 63

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