Lenovo ThinkPad 360 Hardware Maintenance Manual - Page 148
Type characters on the ThinkPad 701C/701CS, ThinkPad 701C/701CS system.
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If the customer cannot establish a connection between the ThinkPad 701C/701CS and a remote system, perform the following steps: 1. Ensure that the device the customer attempted to connect with is an Infrared Data Association (IRDA) compliant device. 2. Check to make sure that both systems are using the same revision level of the same software. 3. Check setup options on both systems to ensure that the baud rate and other setup parameters are the same. 4. Check the Configuration Utility to ensure that the infrared transceiver is assigned to the same serial port that is designated in the application software and that the IRQ assignment is not shared with any other device such as the internal modem or external serial port on the MultiPort II. 5. Verify that the two systems are in close proximity (less than 1 meter [3.2 feet] apart for IRDA-compliant devices) and that the infrared transceiver window on the ThinkPad 701C/701CS is aligned with (directly opposite) the remote device's window. 6. Ensure that the windows on both systems are clean and unobstructed. If the two systems still will not connect after you have followed the preceding steps and the remote system is another computer with a terminal program (for example, Windows** Terminal** or Procomm**) installed, perform the following tests: 1. Set up the terminal application on each system to communicate with the infrared transceiver serial port at a speed of 115KB per second. 2. Type characters on the ThinkPad 701C/701CS keyboard and check to see whether or not these characters appear on the remote system. (Note that the characters you type will not appear on the ThinkPad 701C/701CS system.) 3. Type characters on the remote keyboard and check to see whether or not these characters appear on the ThinkPad 701C/701CS system. 4. If characters do not appear in either step 2 or 3 and you are certain that infrared is working correctly on the remote system, replace the inverter card. 5. If characters do appear, consult the software vendor to ensure that the customer is using a compatible software package and that the setup parameters are correct. 138 IBM Mobile Systems HMM