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 an
83/84-key, IBM enhanced-type keyboard with the standard character and
function keys plus 12 programmable function keys (F1 through F12).
Using the Special Function (Fn) key which assigns multiple functions to
keys, the keyboard can emulate the IBM 101/102 keyboards using 83 keys
(84 on international models).
The keyboard has a 4mm stroke and features a special keyboard interface
chip that can detect multiple levels of key input (good simulation of N-key
rollover for up to 10 keys).  
Some of the major features of the keyboard include:
·4-mm Key movement 
Embedded Point Device
Select Switches
83/84 Key , 4mm Keyboard
Figure 1-17  Notebook Pointing Device
  
1-34 General Description 
						

							·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 and Canada.
·U.K. English- This version (also known as the international version) has
84 keys and is generally used in England, Germany, and other
European countries with the appropriate keycap changes.
nNote:  See Appendix B for international keyboard layouts
n
Note: The T ravelMate 5000 Series Notebook Computer User’s Online Refer-
ence Manual provides detailed descriptions of keyboard special function keys.
A six-pin Mini-DIN connector on the left side of the Notebook can attach to
either an external PS/2 keyboard (or 101 Keyboard via an adapter), PS/2
Mouse, or the optional PS/2 Numeric Keypad.
QWERTY
Enter
Caps
LockASDF
GH
X
C
VBNZ
FnAlt
12
34
56
F1F2 F3F5 F6F7Paus eF4Scr LkF11 F12InsDelPrt ScSysRq
CtrlHome End PgUp
Pg DnAlt
456UIOP
12
3JKL
00M
79
0
79
8
8
F9F8 F1 0Set Up EscBreak
Enter
Enter NumLk
ShiftShift
%&()
Figure 1-18  Keyboard Layout
  
General Description 1-35 
						

							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 AT-keypad
characters and functions when pressed in conjunction with the Fn key.
When the indicator is Off, pressing the Fn key with the appropriate keys
provides cursor movement, paging and other functions in the normal
mode. When the indicator is blinking, the embedded numeric keypad
becomes a temporary numeric keypad that does not require you to
press any other key.
·Scroll Lock indicator. This LED lights to indicate that the keyboard is
locked in the scroll mode.
Two additional indicators are visible with the notebook open or closed.
These include: 
·Power/Standby Indicator. This is a dual-color LED that glows green
when the Power switch is set to the On position. If the LED does not
come on, the AC adaptor may not be connected or the batteries may be
discharged.
This same LED also glows amber when the computer is set to the Suspend
mode and alternately glows amber and green when the computer enters the
Auto Suspend Mode.
·Low Batt indicator. This LED glows red (and the alarm sounds if
enabled using the Setup Program) to warn of an impending low battery
condition (approximately 1 to 10 minutes of charge remaining in
battery). Both the alarm and indicator remain on until the computer
shuts itself down.
Three additional LEDs are located along the front panel of the notebook.
These include: 
·Floppy Disk indicator. This LED indicates the computer is reading from
or writing to the floppy diskette drive.
·Hard Disk indicator. This LED indicates system disk drive activity, such
as when the computer is writing to or reading from the drive.
·Turbo Indicator. This LED lights when the computer is operating in its
high speed mode. The LED extinguishes during reduced speed
operations, when the notebook is in Standby mode, or when accessing
the Floppy Drive and the Auto Speed mode is active.  
  
1-36 General Description 
						

							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 supplied software (DOS operating system, Windows,
application programs, diagnostics and utilities). A diskette supplied with the
system contains a program that simplifies the process of backing
up/restoring all system software. 
Floppy Diskette
Activity Indicator
Hard Disk 
Activity IndicatorTurbo Mode Indicator The Point
SCR (Scroll Lock)
NUM (Numeric Lock)
CAP (Caps Lock)
Power Switch
PCMCIA Release Switches
Battery Release
Switches
Power/Standby
Indicator
Rear Connector Doors
Release ButtonLow Battery Indicator
Suspend Button
Figure 1-19  Notebook Controls/Indicators
  
General Description 1-37 
						

							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 Diskette Drive Subsystem
The Floppy Diskette Drive Subsystem consists of a Floppy Controller (part of
the Combo SMC 37C665 chip) and the Floppy Diskette Drive.
The Floppy Diskette Drive can read/write standard 3.5-inch minidiskettes
(1.44MB capacity).
A Floppy Drive activity LED, located on the front edge of the notebook, lights
during floppy read/write accesses.
1.8.12 Power Subsystem
Each battery pack contains four green LEDs to display charge status of the
pack (when the Display Charge Status button is pressed on the front of the
battery pack). The four LEDs indicate the percent of charge on the batteries
as shown in Figure 1-4. 
The Battery Low Indicator on the top case (Figure 1-19) glows amber when
the batteries are low and is off when the batteries are more than 10%
charged.
As long as one battery pack has sufficient charge (25% or more) to operate
the system, the remaining battery pack may be removed with the notebook
operational (in Suspend mode).
Functionally, the Power Subsystem consists of the following major sections: 
·AC Power Adapter
·Two Internal Battery Packs
·NVRAM Battery (on Main Board)
·Power Supply Section (on Main Board)
·Inverter Board Assembly (in Cover/Display Assembly).
·Power Conservation Logic (part of Main Board)
  
1-38 General Description 
						

							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 intelligent battery pack contains
circuitry to monitor the charge remaining in the pack and recharge the pack
when the AC Adapter is present. 
The rechargeable battery packs provide DC power for the computer (and for
the NVRAM and real time clock battery on the Main Board) when the AC
Adapter is not being used.   
Each battery pack contain four LEDs to display charge status of the pack
(either when the Display Charge Status button is pressed on the front of the
battery pack or when the batteries are being charged). The four LEDs
indicate the percent of charge on the batteries as shown in Figure 1-4. 
As long as one battery pack has sufficient charge (25% or more) to operate
the system, the remaining battery pack may be removed with the notebook
operational (in Standby mode).
To remove a battery pack from the notebook while the notebook is powered
off, press the Battery Eject Button (just above the top left side of the
keyboard) and remove the pack from the front of the notebook. If the
batteries are not totally discharged, you can replace a battery pack with the
system operational (in Suspend Mode) without loosing data. Insert a
charged pack back into the system. Repeat the procedure with the
remaining pack if you have a second replacement battery. 
1.8.12.3 NVRAM Battery 
The Main Board in the notebook is equipped with a smaller 3.6V, 11 MAH
(milli amphere hours) Nickel Metal Hydride battery which drives the battery
powered CMOS memory (non-volatile memory) and real time clock when the
main batteries are out of the notebook. The NVRAM battery is recharged
from the Vcc supply when the notebook is operating off battery power or
from the AC adapter when attached even if the notebook is powered off.
1.8.12.4 Power Supply Section of Main Board
The Power Supply Section receives approximately 7.2 VDC from the battery
packs and uses this input voltage to generate +3, +5 and +12 regulated
output voltages to provide power for all internal notebook board assemblies.
The output of the +5 volt regulator also drives the LCD inverter circuit on
the Inverter Board Assembly (part of the Cover -Display Assembly).. 
  
General Description 1-39 
						

							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 mm)
Floppy Drive:
Diskette Size
Diskette Storage 
Capacity3.5 inches (88.8 mm)
1.44 MB
Display: 
Type:
Resolution: 
Lines/Screen: 
Colors: 
Video Memory:10.4 Inch Active Matrix Color
640 X 480 pixels bit-mapped
25
up to 65K colors
2 MByte
Layout: Inverted T Cursor Control Key Layout
Function Keys:F1 to F12
Sound FeaturesFull Sound Blaster and Sound Blaster Pro Compatability
MPU-401 UAR T Mode compatible MIDI/Joystick port (when
using EZ-Dock Plus option)
Built-in power amplifier with volume control
Built-in 2:1, 3:1, and 4:1 compression/decompression for 8-bit
PCM files in both stereo and mono sample
44.1 khz digitized audio playback using 16-bit Digital to 
Analog Converter
44.1 khz digitized audio recording; records any kind of sound
input from microphone or line inputs
20-voice FM music synthesizer -plays up to 20 instruments
simultaneously to deliver an orchestra of music.
  
General Description 1-41 
						

							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
Expansion Bus 
Interface160-pin connector for I/O Expansion; includes full PCI bus
with sidebands
Parallel Printer Port
Type:
Modes:Bi-Directional
ECP/EPP Compatible
PCMCIA Support
Features: Two 68-pin sockets for One Type III or two Type I/II Cards;
Supports 3V, 5V, and 12V Cards. 
Driver/Configuration
Software: PhoenixCARD MANAGER Plus
Power Subsystem
AC adapter:
 Input Voltage:
Input Current:
Input Frequency: 
 Output Voltage: 100 to 250 VAC
0.7 to 0.4 Amps
50 to 60 Hz
+9.0 Vdc to +18Vdc
Software
Productivity Utilities:Laptop File Management System, Drop-N-Go Utility, WinMode
Video Utility, Advanced BatteryPro Power Management,
Password for files security, Change Cursor Utility, set of
memory management drivers that increase system speed and
performance and Backup/Restore Utilities and advanced
diagnostics for system maintenance Utility
Sound Software:Jazz 16 Software Utilities
  
1-42 General Description 
						

							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
1000 ft of altitude over 2500 ft (2.2 C per 305 m over 762 m)
0.5G, 20 to 500 Hz; .06mm, 5 to 20 Hz
10G applied in 6-orientations (pos. and neg. X, Y, and Z axis)
20% to 80% (non-condensing)  
-4 degrees F to 140 degrees F (-20 degrees C to 60 degrees C
49,000 ft (15000 m)
60G applied in X and Y axes: 35G in Z axis
5.0 G peak, 20-500 Hz; .06mm, 5 to 20 Hz
Agency Approvals
All TM5000 Series
products meet the
following standards:
Safety:
RFI EMI Interference:
Agency Approval 
Markings:UL 1950 2nd Edition, Underwriters Laboratories Inc.
CAN/CSA-C22.2 No. 950-M89; Underwriters Laboratories Inc.
EN 60950 2nd Edition; TUV Rhienland of North America.
IEC950 EMKO-TSE (74-SEC) 207/94; NEMKO
CFR47, Part 15, Subpart B, Level B
Canadian DOC Level B
EN 55022/CISPR-22. Level B
VDE 0878, Part 3 and Part 30
FCC CFR 47 Part 15, Subpart B,  Class B Certification
NEMKO EN55022 Class B Certification
VDE VDE0878 Part 3 and Part 30 Self Declaration with BZT
  
General Description 1-43