Lenovo ThinkPad 560Z Notebook PC Model 560Z manual Bus, Cursor toSettings andControl Panel

Title: C79FPMST CreationDate: 06/22/98 12:26:52

Troubleshooting

Charts

Problem

Action

Incorrect data is

sentMake sure that:

between

your

computer

The

distance

and

angle

between

your

computer

and

the

device

is w

and

a communicating

set

range.

device.

The communication speeds are the same.

There

are no

other devices that radiate infrared rays, such as

remote-controlled devices or wireless

headphones,

near

your

computer

the

communicating

device.

You

are

not

operating

under

direct

sunlight.

No

fluorescent

lamps are

near

your

computer

or

the

communicating

dev

You

cannot use

DMA

If

you

enable

ECP and choose DMA3 (the default value) for

the

parall

channels for both the connector, you might be

prompted if you

want to

disable

DMA

for

the

parallel connector and theport. To use DMA

channels

for both

the

parallel

and

infrared

ports,

do

infrared

port.

following:

1. Click

onOK

to

disable

DMA for the infrared port.

2. Close

a

parallel

port

panel.

3. Click

on

theInfrared

device

button

to

open

the infrared

panel.

4. Choose DMA0 or DMA1 for infrared port on the panel.

5.If you see the panel prompting if you want to disable DMA for a device, clickOK .on

A Universal

Serial

Bus

(USB) Problem

Problem

Cause

and

Action

A device connected

to 1the.Make

sure that the USB device

is

connected

correctly.

USB connector does

not 2. Open

the

“Device Manager”

window,

and

make

sure

that

the

USB dev

work.

setup

is correct, and that computer

resource

assignment

and

device

installation

are

correct.

Note:

To open the “Device Manager”

window,Startclickand onmove

the

cursor toSettings andControl

Panel .

Click

onControl

Panel

and

double-click

Systemon

. Then

click

on Devicethe Manager

tab

in

the

“System

Properties”

window.

Refer

to “Testing

Your

Computer”

on

page 131

and

run the

diagnostic t

the

USB

connector.

Chapter 4. Solving Computer Problems119