Acer Extensa 610 Service Guide

							2-104Service Guide2.11.3Top OverlayFigure 2-20T62.064.C DC-AC Inverter Top Overlay diagram
2.11.4Bottom OverlayFigure 2-21T62.064.C DC-AC Inverter Bottom Overlay diagram 
						

							Major Chips Description2-1052.12T62.066.C DC-AC Inverter (12.1)
This is a DC-AC  inverter unit to drive Backlight CCFT for notebook computers
Table 2-23MAXIMUM RATINGSITEMSYMBOLMINMAXUNITREMARKINPUT
VOLTAGEVin721VINPUT
CURRENTIin--0.65A2.12.1Electrical Specifications
Electrical Characteristics
Table 2-24Electrical CharacteristicsITEMSYMBOLMINTYPMAXUNITREMARKINPUT VOLTAGEVin7.0--21.0VINPUT CURRENTIin----650mANO LOAD VOLATAGEVs----1400VrmsWORKING
FREQUENCYf45--60KHzTUBE CURRENT
(OUTPUT MAX.)Iout5.56.06.5mArmsPWM
100%TUBE CURRENT
(OUTPUT MIN.)Iout0.51.01.5mArmsPWM
25%Tc=25 Vin=7.0V TO 21.0VOperation Conditions
· OPERATING TEMPERATURE0 TO +50
· OPERATING HUMIDITY90% MAX. R.H
· STORAGE TEMPERATURE10 TO +85
· STORAGE HUMIDITY90% MAX. R.H
· MTBF50000 HRS 
						

							2-106Service Guide2.12.2Pin & Connector Assignment
J1: 52103-1217 (MOLEX)
Table 2-25J1: 52103-1217 (MOLEX) Pin DescriptionPIN NO.SYMBOLDESCRIPRION1DCBATTINDC (7.0V ~ 21.0V)2GNDPOWER GND3CCFTONPWM SIGNAL FOR ON/OFF AND
BRIGHTNESS CONTROL 4DATAID X24C02 DATA5+5.0V+5.0V ± 10%6SGNDLOGIC GND FOR X24C027N.C.8CKCLOCK FOR X24C029N.C.10VEEVEE OUTPUT11CTENCONTRAST ON/OFF TTL LEVEL ²H² ON12CTVRENPWM SIGNAL FOR CONTRAST VOLTAGEJ2:SM02(8.0)B-BHS-1-TB2P (JST)
Table 2-26J2:SM02(8.0)B-BHS-1-TB2P (JST) Pin DescriptionPIN NO.SYMBOLDESCRIPRION1VOUT1Lanp , Input HV2NC3VOUT2Lanp , Input LV 
						

							Major Chips Description2-1072.12.3Top OverlayFigure 2-22T62.066.C DC-AC Inverter Top Overlay diagram
2.12.4Bottom OverlayFigure 2-23T62.066.C DC-AC Inverter Bottom Overlay diagram 
						

							C  h  a  p  t  e  r        3 C  h  a  p  t  e  r        3
BIOS Setup InformationBIOS Setup Information3-1The notebook has a BIOS setup utility that allows you to configure the notebook and its hardware
settings.  This chapter tells how to use the Setup utility and describes each parameter item in the
setup screens.The notebook is also bundled with Windows 95-based notebook management
utility similar in function with the BIOS Setup utility called the Notebook
manager. See section 5.3 for details.
3.1When to Use Setup
The notebook is already correctly configured for you and you do not need to run Setup.  If you
make any changes to the notebook or you receive an Equipment Configuration Error message
after you turn on the notebook, you need to run Setup.  Run Setup also if you want to do any of the
following:
· Change the system date, time or speed
· Add or remove serial and parallel devices
· Change the system boot drive or display device
· Set the video display features
· Set the power-saving modes
· Set, change, or remove a system passwordThe system configuration values reside in the battery-powered CMOS RAM. 
						

							3-2Service Guide3.2Entering Setup
Press F2 during POST to enter Setup.  The BIOS Utility main screen displays.
Setup UtilityBasic System Settings
System Security
Power Management Settings
Load Setup Default Settings­¯=Move Highlight Bar, ¿=Select, Esc=ExitThere are four main menu items:
· Basic System Settings
· System Security
· Power Management Settings
· Load Setup Default Settings
Read through the Setup Screen Notes before navigating the Setup screens.
SETUP SCREEN NOTES· From the main menu, press ­ ­, ¯ ¯, ¬ ¬ or ® ® to move from one menu item to another and press
Enter to enter the selected menu.
· When accessing multi-page sections, press PgDn and PgUp to go through the pages.
· Parameters displayed in low brightness (grayed-out) are not user-configurable.  The notebook
detects and sets the values for these parameters.
· Press ­ ­ or ¯ ¯ to move from one parameter to another.  Press ¬ ¬ or ® ® to change parameter
settings.  You have to change some settings when you add a component to the notebook.
· Most of the Setup parameters are self-explanatory.  Press F1 for help on individual
parameters. 
						

							BIOS Setup Information3-3· When you press Esc to exit the Setup utility, the following prompt appears:
Do you want to save CMOS data?[Yes]           [No]· Select [Yes] to save the changes you made to the configuration values or [No] to
abandon the changes and retain the current values. 
						

							3-4Service Guide3.3Basic System Configuration
Basic System Configuration has a one-page screen display illustrated below.
Basic System SettingsDate ----------------------- [Dec 06,1996]
Time ----------------------- [10:00:00]
Floppy Disk A -------------- [1.44 MB 3.5-inch]
Floppy Disk B -------------- [      None      ]
                                         Cylinder  Head  Sector
Hard Disk (1160 MB) -------- [Auto]          787     32     63
Large Hard Disk Capacity --- [Enabled]
Memory Test ---------------- [Disabled]
Boot Display --------------- [Auto]
Quiet Boot ----------------- [Enabled]­¯=Move Highlight Bar, ®¬=Change Setting, F1=Help, Esc=Exit3.3.1Date and Time
The notebook displays the current date in MM/DD/YY format and the current time in HH:MM:SS
format.  It uses a 24-hour clock; for example, 6:25 PM displays as 18:25:00.
3.3.2Floppy Disk Drives
The default setting for Diskette Drive A is [1.44 MB 3.5-inch] and this setting applies to
both an internal and external floppy drive configuration.  Diskette Drive B, by default, is set to
[None].  Enable this parameter if two floppy drives are connected to the notebook.
3.3.3Hard Disk Drive
The default setting for IDE Drive 0 is [Auto].  With this setting, the BIOS automatically detects
your drive parameters.  You can also opt to key in your drive parameters by setting this parameter
to [User].  To determine your drive parameters, look at the data on the label pasted on your
hard disk drive (or supplied in vendor documentation) and type in the parameters.  Be sure to set
the correct drive parameters; otherwise an error message appears when you boot up the notebook.
We suggest you set this parameter to [Auto].
3.3.4Large Hard Disk Capacity
The default setting for Large Hard Disk Capacity is [Enabled].  Set this parameter to
[Disabled] if you use the UNIX operating system on this computer. 
						

							BIOS Setup Information3-53.3.5Memory Test
The notebook can test main memory for errors when you turn it on. The default setting,
[Disabled], allows the notebook to bypass the memory test and speed up the self-test
procedure.
3.3.6Boot Display
If you connect an external monitor, you can switch display between the LCD and the external
display.  This parameter determines which display device the notebook uses on boot-up.  Table 3-
1 describes the different settings.If notebook resolution is set at 640x480, the image on the
notebook and external monitor will not be full-screen.  For full-
screen image, set-up notebook at 800x600 resolution.
Table 3-1Display Device SettingsSettingDescriptionAuto (default)If an external display is present, the notebook uses the external
display; otherwise, the LCD is the display device.BothThe notebook uses the external display and LCD simultaneously.3.3.7Quiet Boot
In Quiet Boot mode, the notebook does not display POST messages on your display.  The default
setting is [Enabled]. 
						

							3-6Service Guide3.4System Security
System SecurityDisk Drive Control
   Floppy Disk Drive ------------- [Normal]
   Hard Disk Drive --------------- [Normal]
   System Boot Drive ------------- [Drive A Then C]
   CD-ROM Bootable --------------- [Disabled]
On Board Communication Ports
   Serial Port 1 Base Address ---- [3F8h(IRQ 4)]
   Parallel Port Base Address ---- [378h(IRQ 7)]
   Parallel Port Operation Mode -- [Standard and Bidirectional]
    ECP DMA Channel -------------- [0]
Setup Password ------------------- [None]
Power On Password ---------------- [None]
Plug and Play O/S ---------------- [Yes]
OS Legacy Mode Support ----------- [Disabled]­¯=Move Highlight Bar, ®¬=Change Setting, F1=Help, Esc=Exit3.4.1Floppy Disk Drive Control
This parameter allows you to enable or disable the read/write functions of the floppy drive.  The
following table summarizes the available options.
Table 3-2Floppy Disk Drive Control SettingsSettingDescriptionNormal (default)Floppy drive functions normallyWrite Protect
Boot SectorDisables the floppy drive write function on a diskette’s boot sector.  This option is
for operating systems that access the floppy drive 100 percent via BIOS only.DisabledDisables the floppy drive3.4.2Hard Disk Drive Control
This parameter allows you to enable or disable the read/write functions of the hard disk drive.  The
following table summarizes the available options.
Table 3-3Hard Disk Drive Control SettingsSettingDescriptionNormal
(default)Hard disk drive functions normallyWrite Protect
Boot SectorDisables the hard disk drive write function on the hard disk’s boot sector.  This
option is for operating systems that access the hard disk 100 percent via BIOS only.DisabledDisables the hard disk drive