Acer Travelmate 7100 Service Guide

Major Chips Description2-73Table 2-8T62.036.C Pin DescriptionsPin NamePin TypePin No.Descriptionindicate the current drawn from the AC adapter or other power
source such as docking station power supply. This level is 2
Amps per volt nominal. The source impedance is less than 1KW.CHARGSPI14Analog input from the system board to limit the total current
consumed by the system from the AC adapter.  This signal shall
be compared by the module with the CHARGFB from the system
mother board and the battery...

2-74Service Guide2.9 Ambit DC-AC Inverter
This notebook uses two kinds of DC-AC inverters: One (T62.088.C) is designed for the 13.3-inch
TFT (LG LP133X1) LCD, the other (T62.055.C) for the 12.1-inch TFT (IBM ITSV50D) LCD.
2.9.1 T62.055C
2.9.1.1 Pin DiagramCN2CN1T62.055.C1
221
203
2
1CN3Figure 2-12T62.055.C Pin Diagram
2.9.1.2 Pin Descriptions
Table 2-9T62.055.C Pin DescriptionsPin NamePin TypePin No.DescriptionsCN1 connector signalsVhi
VloO1
2This is the High voltage side of the Lamp. (The shorter wire...

Major Chips Description2-75Table 2-9T62.055.C Pin DescriptionsPin NamePin TypePin No.DescriptionsBATTLEDO13This signal is an open collector sink signal to drive LED2. The
LED current is limited by a series resistor of 1KW.BMCVCCO14This a 5 volt supply for powering the LEDs. It should not be used
for any other purpose.ADVDDO18This is a 5 volt power line for the analog circuits and display
LEDs on the inverter board.AUDGNDGND19, 20This is the return ground for the microphone circuit. It should not
be...

2-76Service GuideTable 2-10T62.088.C Pin DescriptionsPin NamePin TypePin No.DescriptionsADVDDI1This is a 5-volt power line for the analog circuits and display
LEDs on the inverter board.MIC_OUTO2Microphone preamplifier circuit outputAUDGNDI/O3Microphone circuit return groundGNDI/O4, 5System groundSGNDI/O6Signal groundCNTADJ7NCBRTADJI8Lamp current control pin (0~3V)PANEL_ONI9On/Off (On:1.8V(min), Off:0.8V(max))BMCVCCI10This is a 5-volt for powering the LEDs.PWRLEDI/O11Connect to D5 LEDBATTLEDI/O12Connect...

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BIOS Setup InformationBIOS Setup Information3-1The computer BIOS setup utility allows you to configure the computer and its hardware settings.
The computer comes correctly configured, and you do not need to run the BIOS setup utility to use
the computer. However, you might need to use the BIOS utility if you want to customize the way
your computer works, or if you receive an error message after making hardware or software
changes.
With the BIOS...

3-2Service Guide3.1 About My Computer
Selecting About My Computer presents you with two screens of details about the computer and its
peripherals. These screens are for information only; you cannot change the settings on these
screens.  The following table tells you what each of the items on the About My Computer screens
are.
Table 1-1About My Computer ParametersItemDescriptionSystem ArchitectureSystem architecture informationSystem BIOSBIOS versionSystem IDID information on major...

BIOS Setup Information3-33.2 System Configuration
Selecting System Configuration presents a Basic System Configuration screen, where you can
change several items in your computer’s configuration.
Press ­ or ¯ to move from one item to another, and ¬ or ® to change settings. Press F1 to get
help on a selected item. Press Esc to exit the Basic System Configuration screen and return to the
main BIOS Utility screen.
3.2.1 Date and Time
The current date is in “Day-of-the-week Month Day, Year” format—for...

3-4Service Guide3.2.6 Internal Speaker
This parameter lets you enable or disable the internal speaker. The default setting is Enabled.Tip:  You can also toggle the speaker on and off by pressing
the speaker hot key combination Fn+F7.
3.2.7 Silent Boot
When set to Enabled, the computer shows the computer logo onscreen and hides the POST
routine messages.  The default setting is Enabled.
3.2.8 Fast Boot
When set to Enabled, the computer bypasses the memory tests to speed up the boot-up process.
The default...

BIOS Setup Information3-53.3 Advanced System Configuration
For advanced users, the System Configuration menu item contains two hidden pages that allow
you to view and configure more technical aspects of the computer.Caution:  The computer is already tuned for optimum
performance and you should not need to access these
advanced screens. If you do not fully understand the items in
these special screens, do not change their values.
To access the Advanced System Configuration screens, press F8 at the BIOS...

3-6Service Guide· Advanced PIO Mode. Advanced PIO (Programmed Input/Output) Mode enhances drive
performance by optimizing the hard disk timing. The available values are: Auto and Mode 0.
The default setting is Auto.
· Hard Disk 32 Bit Access. This parameter allows your hard disk to use 32-bit access. The
available values are: Auto and Disabled. The default setting is Auto.Tip:  We suggest you set all of these parameters to Auto
whenever that choice is available. This allows the computer
to use the hard...