IBM C79EGMST manual Problem, Audio or, a Telephony, A Universal, Serial, Troubleshooting Charts

Title: C79EGMST CreationDate: 02/10/98 09:24:42

Troubleshooting Charts

An	Audio or		a Telephony		Problem
Problem			Cause	and Action
The volume	of	the	Use	theSerial-in	control in the volume control panel to control the volume.
WaveTable	MidiSynth
device cannot		be
controlled.

The voice quality overDuetheto limitations of the ThinkPad modem, the voice quality that is trans

Voice-Over-Dataand received over the Voice-Over-Data communication is not as good as th communication is poor. normal telephone line. There may be momentary voice interruptions, delays,

distortions.

Other problems.

Problems

may

be

due to

such other

factors

as:

Incompatibility between the ThinkPad modem

feature

and

other adapter

cards

in

the

docking

station. To

isolate

this problem to a card or d

remove

the adapter

cards in the docking station one by one, and run

diagnostic

test

(see “Testing

Your Computer”

on page 144).

The

telephone

cable

configuration

is

not

correct

for

your application.

The

telephone

cable

is

defective.

The

telephone

is

defective.

The

audio

cable

configuration

is

not

correct

for

your application.

The

audio

cable

is

defective.

The

audio

equipment

is

defective.

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 device

work.

setup

is correct, and that computer resource assignment

and device d

installation

are

correct.

Note:

To open the “Device Manager”

window,Startclickand onmove

the

cursor

toSettings

andControl

Panel

. Double-click Control

Panel

andSystem

. Then

click

on Devicethe Manager

tab

in

the

“System

Properties”

window.

Refer

to “Testing

Your

Computer”

on

page 144

and

run

the diagnostic tes

the

USB

connector.

132 IBM ThinkPad 600 User's Reference