upgrading and repairing PCs technicians ... - 400 Bad Request

230
Table 9.11 Keyboard POST Codes Continued
Error Code Description
342 Keyboard cable error.
343 Keyboard LED card or cable failure.
365 Keyboard LED card or cable failure.
366 Keyboard interface cable failure.
367 Keyboard LED card or cable failure.
Mice and Pointing Devices
Mouse Motion Detection Methods
The most common type of mouse mechanism is the optomechanical,
used by Logitech and many other vendors. Dirt on the
mouse ball or rollers, or fuzz in the light paths will cause skipping
and erratic mouse cursor operation.
Microsoft sells mice based on both mechanical (roller-type) technology
and a new optical technology called IntelliEye. The
IntelliMouse Optical and IntelliMouse with IntelliEye detect the
mouse’s motion with a high-speed purely CMOS-based optical sensor
that, unlike the old optical mouse designs from Mouse Systems,
doesn’t require a special pad or special mousing surface. For those
who prefer a different color to Microsoft’s IntelliEye Red, Logitech’s
new MouseMan Wheel and Wheel Mouse feature a translucent blue
bottom and similar optical detection features.
Although some stores display these mice on a mirrored surface,
don’t use a mirror or glass as a mousing surface. Your pants leg, airline
tray table, or old school tie will work well, though.
Pointing Device Interface Types
The connector used to attach your mouse to the system depends
on the type of interface you are using. Mice are most commonly
connected to your computer through the following three interfaces:
• Serial port
• Dedicated motherboard mouse port (PS/2 port)
• USB port
Chapter 9—Keyboards, Mice, and Input Devices