The Synaptic touch pad, a pointing device for personal computers, detects the position of a
finger over a touch-sensitive area. To move the cursor, the user lightly slides a finger over
the smooth sensor area. To
‘
click
’
, the user gently taps on the surface.
The ultra-thin module is the thinnest PCB based touchpad available today. It is a capacitive
sensor - the finger is detected by measuring its effect on an array of capacitive lines
integrated into the PC board. The pad senses both the finger
’
s position and its contact area
(X, Y, and Z). The area of contact is a measure of applied pressure. One side of the module
PC board is the sensor surface; electronic components are mounted on the other side. The
sensitive area is protected by a layer of smooth and durable mylar.
The Synaptic touch pad communicates with the host via a standard PS/2 mouse or trackball
interface. It is fully compatible with the standard Microsoft mouse driver. The module
connector includes the PS/2 signal pins, power supply pins and two connections for
external button switches.
The Synaptic touch pad includes a special
“
edge-motion
”
feature that allows the user to
extend a drag operation when the finger reaches the edge of the sensor pad. The cursor
continues to coast in the indicated direction when the finger is held against the edge.
4.14 Disk Drives Subsystem
The disk drives subsystem, implemented on the Motherboard and on the associated internal
hard disk drive assembly and device bay, provides disk storage for all system software and
user files.
The notebook is equipped with high capacity hard disk drive using Enhanced IDE
controller with LBA (Logical Block Addressing) and Ultra DMA mode support.
The ICH4 controller chip provides the Primary IDE controller for the internal hard disk,
and the Secondary Master for the CD-ROM.
The notebook uses the 24X-speed IDE CD-ROM Drive that reads digital data stored on
CD-ROM at 24 times faster rotational speed. The CD-ROM drive supports CD-DA
transfer over ATAPI function that the host system can read CD audio data. The drive also
supports Photo-CD Multi-session disc compatibility and Multimedia PC-3 specification
compatibility. The notebook also could use the 8X+ speed IDE DVD-ROM Drive that
reads DVD digital data stored on DVD-ROM at 8 times faster rotational speed.
4.15 Power Subsystem
The Power Subsystem consists of the following major sections:
4.15.1 AC Power Adapter
The computer is equipped with a 60W Peak 80W universal AC power adapter that converts
AC voltage (100 to 240VAC, 50 to 60Hz) into DC voltage used to operate the notebook
and charge the batteries.
TECHNICAL SERVICE MANUAL
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