Lenovo ThinkPad 600E User's Reference Guide for TP 600 - Page 150

Title: C79EGMST CreationDate: 02/10/98 09:24:42 Troubleshooting Charts An Audio or a Telephony Problem Problem The volume of the WaveTable MidiSynth device cannot be controlled. The voice quality over the Voice-Over-Data communication is poor. Other problems. Cause and Action Use the Serial-in control in the volume control panel to control the volume. 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. 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 A device connected to the USB connector does not work. Cause and Action 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