IBM C79EGMST Laptop User Manual


 
Troubleshooting Charts
An Audio or a Telephony Problem
Problem Cause and Action
The volume of the
WaveTable MidiSynth
device cannot be
controlled.
Use the Serial-in control in the volume control panel to control the volume.
The voice quality over the
Voice-Over-Data
communication is poor.
Due to limitations of the ThinkPad modem, the voice quality that is transmitted
and received over the Voice-Over-Data communication is not as good as the
normal telephone line. There may be momentary voice interruptions, delays, or
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 device,
remove the adapter cards in the docking station one by one, and run the
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 the
USB connector does not
work.
1. Make sure that the USB device is connected correctly.
2. Open the “Device Manager” window, and make sure that the USB device
setup is correct, and that computer resource assignment and device driver
installation are correct.
Note: To open the “Device Manager” window, click on Start and move the
cursor to Settings and Control Panel. Double-click on Control
Panel and System. Then click on the Device Manager tab in the
“System Properties” window.
Refer to “Testing Your Computer” on page 144 and run the diagnostic test for
the USB connector.
132 IBM ThinkPad 600 User's Reference
Title: C79EGMST CreationDate: 02/10/98 09:24:42