Acer Travelmate 5000 Maintenance Manual

1.8.8 Pointing Device Subsystem
The pointing device subsystem (Figure 1-17) consists of the built-in Point
device on the keyboard and a pre-programmed 82c752 micro-controller that
interfaces the mouse device to the main board.  An external PS/2 port also
supports the use of an external PS/2 compatible mouse. 
1.8.9  Keyboard Subsystem
The keyboard subsystem is implemented on the keyboard assembly,
Keyscan Board, and part of the System Board.
The TravelMate 5000 Series Keyboard, shown in Figure 1-18, is...

·Integrated numeric keypad
·Inverted T Cursor Control Key Layout
·Special Keys for the following:
·Setup Menu (Fn-ESC)
·Standby Mode (Fn-F4)
·Real-Time Sound Volume Adjustment (CTRL-ALT-U or
CTRL-ALT-D)
·Real-Time CPU Speed Adjustment (CTRL-ALT-UP/DOWN
Arrow)
·Separate keys for Page Up, Page Down, F11 and F12 plus inverted T.
The notebook keyboard is available in the following versions:
·U.S. English- This version (also known as the domestic version) has 83
keys and is generally used in the United States...

1.8.9.1 LED Displays
As shown in Figure 1-19, the TravelMate 5000 Series Notebook Computers
contain a set of three LED displays just above the keyboard including: 
·Caps Lock indicator. This LED indicates that the keyboard is locked in
the uppercase mode. To switch to the lowercase mode, press the Caps
Lock key.
·Num Lock indicator. This LED lights when you press the Fn-F7
(NumLk) keys to toggle on the numeric keypad lock function. When the
LED is On, the embedded numeric keyboard keys generate...

1.8.10 Hard Disk Subsystem
The Hard Disk Subsystem, implemented on the Main Board and on the
associated hard disk drive module, provides disk storage for all system
software and user files. 
Depending on the model, the notebook is equipped with an 810 million byte,
1/2 hard drive or other high capacity drive. The disk controller for all
models is a Combo SMC 37C665 chip, which is IDE interface compatible.  
During the manufacturing process, Texas Instruments formats the hard
disk and then loads all...

c
Caution: Formatting the disk drive erases any data that may be stored
on the disk. Therefore do not attempt a format of the hard disk unless
the computer self-test and diagnostics confirm that the disk has not
been formatted.
A Hard Drive activity LED is located along the front edge of the notebook
(See Figure 1-19). This LED lights during hard drive read/write accesses. 
c
Caution:  The notebook should not be moved when the HDD LED is lit
to prevent accidental damage to the hard drive. 
1.8.11 Floppy...

1.8.12.1 AC Power Adapter
The computer is equipped with a universal AC power adapter that converts
AC voltage (100 to 240 VAC, 50 to 60 Hz) into DC voltage used to operate
the notebook and charge the batteries. The adapter also supplies sufficient
power to drive an attached EZ-Dock or EZ-Dock Plus Port Replicator option
that may be attached to the notebook.
1.8.12.2 Intelligent Battery Packs
The TM5000 Series Notebooks hold up to two intelligent battery packs
(Lithium-Ion) as shown in Figure 1-4. Each...

The outputs of the Power Supply Section include: 
·+3 VDC at 3 Amps
·+5 VDC at 5 Amps
·+12 VDC at 60 Milliamps (Flash memory)
1.8.12.5 Inverter Board Assembly
The Inverter Board Assembly, located in the Cover Display Assembly,
converts the +5 VDC input from the Power Supply Section of the Main
Board  into a high voltage AC output used to light the CCFT.    
  
1-40 General Description 

1.9 TravelMate 5000 Series
Notebook Specifications
Specifications for the TravelMate 5000 Series Notebooks are provided in
Table 1-2.
Table 1-2  TravelMate 5000 Series Notebook Specifications
Functional Characteristics
Characteristics Specification
Processor
Pentium Model  Intel P54-C, 75 MHz clock rate; 3.3-volt 
Memory Subsystem
ROM:
RAM:2 MB FLASH ROM, Boot Block logic
8 MB RAM Standard; User Expandable to 32 MB 
Hard Drive:
Disk Storage Capacity:
Disk Size:810 million bytes (772MB)
2.5 inches (63.4...

Table 1-2  TravelMate 5000 Series Notebook Specifications (continued)
External Interfaces
Characteristics Specification
Serial Port
Connector Type:
Transmission Type:
Bits per second:
Line control:
Data Word9-pin, male, D-type connector
Asynchronous transmission
110, 200, 300, 600, 1200, 2400, 4800, 9600, 19200
READY/BUSY,  DC1/DC3
7 or 8 bit
CRT Monitor Interface15-Pin Female, D-Type Connector (See Appendix E for
Description of Supported Monitors.)
PS/2 Keyboard/
Mouse Interface6-pin Mini-DIN Connector...

Table 1-2  TravelMate 5000 Series Notebook Specifications (continued)
Physical Characteristics
Width:,  
Depth:
Height:
Weight:11 inches (27.9 cm)
8.5 inches (21.6 cm)
2.2 inches (5.6 cm)
6.7 pounds (2.9 kg) with two Lithium-Ion Battery Packs
Environmental Characteristics
Operational
Temperature:
Altitude:
Vibration:
Shock:
Humidity:
Non-Operating
Temperature:
Altitude:
Shock:
Vibration:50° F to 95° F (10° C to 35° C)
8200 ft (2500 m) maximum
Derate linearly the maximum temperature by 4 degrees F per...