Acer Travelmate 200 Service Guide

24
   
  Keyboard
ItemSpecification
Keyboard controller  Mitsubishi M38867
Keyboard vendor & model name API
Total number of keypads 84-/85-/88- key
Windows 95 keys Yes
Internal & external keyboard work simultaneously Yes
Battery 
ItemSpecification
Vendor & model name Sanyo
Battery Type Ni-MH
Pack capacity  4000mAH
Cell voltage  1.2V
Number of battery cell 8
Package configuration 8S
Package voltage  9.6V
DC-DC/Charger Converter
ItemSpecification
Vendor & Model Name Acer
Input Voltage AC Adapter or...

25
NOTE: DC-AC inverter is used to generate very high AC voltage, then support to LCD CCFT backlight user, 
and is also responsible for the control of LCD brightness. Avoid touching the DC-AC inverter area while  
the system unit is turned on. 
NOTE:  There is an EEPROM in the inverter, which stores its supported LCD type and ID code.  If you replace 
a new inverter or replace the LCD with a different brand, use Inverter ID utility to update the ID 
information .
. DC-AC LCD Inverter
ItemSpecification...

26
 
Noise + Ripple  250mVp-pmax (20 MHz bandwidth)
Load 0(min) 5A(max)
Output Ratings (CC mode)
DC output voltage 19V-20.5V for CV mode
Constant current mode 3.6 +/- 0.3A
Dynamic Output Characteristics
Turn-on delay time 3 sec (@ 115Vac)
Hold up time 5ms (@115Vac, Full load)
Over Voltage Protection (OVP) 15.6V
Short circuit protection Output can be shorted without damage
Electrostatic discharge (ESD) 15KV (at air discharge)
8KV (at contact discharge)
Dielectric Withstand Voltage
Primary to secondary...

27
Environmental Requirements
ItemSpecification
Temperature 
Operating +5~+35 
°C
Non-operating -10~+60 
°C
Non-operating -20~+60
 °C (storage package)
Humidity 
Operating 20% to 80% RH, non-condensing 
Non-operating 20% to 80% RH, non-condensing (unpacked) 
Non-operating 20% to 90% RH, non-condensing (storage package) 
Vibration 
Operating (unpacked) 5~25.6Hz: 0.38mm (peak to peak) 25.6~250Hz: 0.5G
Non-operating (unpacked) 5~27.1Hz: 0.6G 27.1Hz~50Hz: 0.4mm (peak to peak) 
50~500Hz: 2.0G
Non-operating...

28
I/O Address Map
I/O AddressFunction
000-00F DMA controller-1
020-021 Interrupt controller-1
040-043 Timer 1
060, 064 Keyboard controller 8742 chip select
061 System speaker
066 ACPI Embedded Controller
070-073 System CMOS/RTC
080 Main board resources
081-08F DMA Controller-1
0A0-0A1 Interrupt controller-2
0C0-0DF DMA controller-2
0F0-0FF Numeric data processor
170-177/376 2nd EIDE device (CD-ROM) select
1F0-1F7/3F6 1st EIDE device (hard drive) select
278-27F Parallel port 3
2E8-2EF Lucent Technologies...

29
DMA Channel Assignment
DMA ChannelFunction
DRQ0 Not used
DRQ1 Not used
DRQ2 Floppy
DRQ3 Not used
DRQ4 DMA controller
DRQ5 Not used
DRQ6 Not used
DRQ7 Not used 

30 

Chapter 231
BIOS Setup Utility
The BIOS Setup Utility is a hardware configuration program built into your computer’s BIOS (Basic Input/
Output System).
Your computer is already properly configured and optimized, and you do not need to run this utility.  However, 
if you encounter configuration problems, you may need to run Setup.  Please also refer to Chapter 4 
Troubleshooting when problem arises.
To activate the BIOS Utility, press F2
 during POST (while the TravelMate logo is being displayed)....

32Chapter 2
System Information
The System Information screen displays a summary of your computer hardware information.
NOTE: 
The screen above is a sample and may not reflect the actual data on your computer.  “X” may refer to 
a series of numbers and/or characters.
The following table describes the information in this screen.
The items in this screen are important and vital information about your computer.  If you experience computer 
problems and need to contact technical support, this data helps our...

Chapter 233
Basic System Settings
The Basic System Settings screen allows you to set the system date and time.
The following table describes the parameters in this screen.
Startup Configuration
The Startup Configuration screen contains parameter values that define how your computer behaves on 
system startup.
ParameterDescriptionFormat
Date Sets the system date. DDD MMM DD, YYYY 
(day-of-the-week month day, year)
Time Sets the system time. HH:MM:SS (hour:minute:second)