T&D RTR-50, User Manual, Page: 114 / 122

105
Troubleshooting
Q: The computer won't communicate via the Serial Port. What should I
do?
A: Try two or three times to fi nd the port connection by using the Auto-
Detect function.
A: Check the connection between the computer and the Unit. Communica-
tion will take place only through the serial port (RS-232C) and will not
work through the printer port or any other port.
A: Check to make sure that you can control the device via the software.
A: If you have access to another computer, try seeing if communication
works with the other computer.
A: If you have a computer with energy saving function settings, make sure
that the serial port has not been turned off. Especially on NEC brand
PC98 notebook computers the default setting maybe such.
A: Check to make sure that the serial port has not been rendered unusable
by the BIOS setting.
A: Make sure that the serial port setting has not been made to render the
port unusable. With some computers, especially all-in-one computers
the serial port serves as the modem jack.
How to check 1: Open the Device Manager
For Windows
®
XP / 2000
1.
2. In the [Start] Menu, right click on [My Computer] and click on [Properties].
In the System Properties Window, click on the [Hardware] tab, then click on
the [Device Manager] button to view the Device Manager Window.
For Windows Me or 98SE
1.
2.
Open the [Control Panel] and double click on [System]; the system
properties will be displayed.
Click the [Device Manager] tab to view the Device Manager Window.