Acer Extensa 610 Service Guide

							System Introduction1-33A necessary condition for the notebook to enter hibernation mode is that the reserved space for saving
system information on the hard disk must be larger than the combined system and video memory size.
Under such conditions, the standby/hibernation hotkey acts as the hibernation hotkey.  See the user’s
manual  for information on the Sleep Manager utility.
In this situation, there are four ways to enter hibernation mode:
· Press the standby/hibernation hotkey 
Fn-F7 (  )
· Set a value for the System Standby/Hibernation Timer in Setup.  If the waiting time specified by this
time elapses without any system activity, the system goes into hibernation mode
· Enable the Suspend upon Battery-low parameter in Setup.  If a battery-low condition takes place, the
notebook enters hibernation mode in about five minutes.
· Invoked by the operating system power saving modes
When the notebook enters hibernation mode, the whole system does not consume any power.  This is why
hibernation mode is also called zero-volt suspend.
To exit hibernation mode, press the power switch (  ).When the PCMCIA I/O card is detected, the following warning pop-up message will be
displayed on the screen by the BIOS.  The system will wait for the specified key to continue.
Warning!!
A PCMCIA card is detected!!
If you are using a fax/modem or LAN cards, please
disconnect with server or complete transmission before
entering standby/hibernation mode, otherwise :
1) File server will be shut down if LAN card is used.
2) Data will be lost if a modem card is used.
Press  to enter standby/hibernation mode.
Press  to cancel. 
						

							1-34Service GuideTable 1-37Hibernation Mode Conditions and DescriptionsConditionDescriptionThe condition to enter
Hibernation Mode· “Hard Disk Drive” is not [Disabled] in System Security of BIOS SETUP.
· “Hard Disk 0” is not [None] in Basic System Configuration of BIOS SETUP.
· HDD has already located enough free contiguous disk space generated by the
Sleep Manager and this free space is not corrupted.
· Standby/Hibernation Timer times-out or Standby/Hibernation Hotkey pressed and
there is no activity within 1/2 second.The condition of
Hibernation Mode· Except the RTC, 6375 (state machine), KB controller and power switch, all the
system components are off.The condition back to On
Mode· Turn off then on the system.DISPLAY STANDBY MODEScreen activity is determined by the keyboard, the built-in touchpad, and an external PS/2 pointing device.
If these devices are idle for the period specified by the Display Standby Timer, the display shuts off until you
press a key or move the touchpad or external mouse.
Table 1-38Display Standby Mode Conditions and DescriptionsConditionDescriptionThe condition to enter
Display Standby Mode· Pointing device is idle until Display Standby Timer times-out or LCD cover is
closed.The condition of Display
Standby Mode· All the system components are on except LCD backlight and CRT horizontal
frequency output (if CRT is connected)The condition back to On
Mode· Any keystroke (Internal KB or External KB)
· Pointing device activityThe VGA BIOS should support DPMS (Desktop Power Management System) for the standby
and hibernation mode function call. When the Display Standby Timer expires, the system
BIOS will execute the DPMS service routines.
HARD DISK STANDBY MODEThe hard disk enters standby mode when there are no disk read/write operations within the period of time
specified by the Hard Disk Standby Timer.  In the standby state, the power supplied to the hard disk is
reduced to a minimum.  The hard disk returns to normal once the system accesses it. 
						

							System Introduction1-35Table 1-39Hard Disk Standby Mode Conditions and DescriptionsConditionDescriptionThe condition to enter HDD Standby
Mode· Display Standby Timer times-out or LCD cover is closed.The condition of HDD Standby Mode
· All the system components are on except HDD spindle motorThe condition back to On Mode
· Any access to HDDBATTERY LOWWhen the battery capacity is low and has no adapter plugged, the system will generate the following battery
low warning:
· Flash power LED with 4 Hz.
· Issue 4 short beeps per minute (if enabled in setup).
· If the AC adapter does not plug in within 3 minutes and the “Standby/Hibernation upon Battery-low”
in BIOS SETUP is enabled, the system will enter Standby/0-Volt Hibernation Mode.  The battery low
warning will stop as soon as  the AC adapter is plugged into the system.
THE AUTODIM PROCESS OF THE LCD BRIGHTNESSThe notebook has a unique “automatic dim” power saving feature.  When the notebook is using AC power
and you disconnect the AC adapter from the notebook, the system “decides” whether or not to automatically
dim the LCD backlight to save power.
If the LCD backlight is too bright, the system automatically adjusts it to a manageable level; otherwise, the
level stays the same.  If you want a brighter picture, you can then adjust the brightness and contrast level
using hotkeys (Fn-F2).
If you reconnect AC power to the system, the system automatically adjusts the LCD backlight to its original
level — the brightness and contrast level before disconnecting the AC adapter.  If you adjusted the
brightness and contrast level after disconnecting AC power, the level stays the same after you reconnect the
AC adapter.
There are two reasons for the notebook to have the LCD AutoDim feature. The first is to save the power
during the notebook is operating under the DC  mode.  The second is to save the “favorite” brightness
parameter set by the user.
The following processes are the basic methods used to implement the LCD brightness AutoDim.
1.  If the original brightness is over 75% and the AC power is on-line, the BIOS will change the brightness
to 75% after the AC power is off-line.
2.  If the original brightness is below 75%, the brightness maintains the same level even if the AC power is
off-line.
3.  If the brightness is already changed by the hotkey under DC power, it will not be changed after the AC
power is plugged in.
4.  If the brightness is not changed by the hotkey under DC power, the brightness will be changed back to
the old setting — the previous brightness parameter under AC power.
5.  If the previous brightness parameter does not exist, the brightness will not be changed in process 4. 
						

							1-36Service Guide1.5.2Drivers, Applications and Utilities
The notebook comes preloaded with the following software:
· Windows 952
· System utilities and application software3
· Sleeper manager utility
· Touchpad driver
· Display drivers
· Audio drivers
· PC Card slot drivers and applications
· Other third-party application software
Table 1-40Location of Drivers in the System Utility CDDevice CategoryFunctionLocationSound, video and game controllersAudioENGLISH\WIN95\AUDIO\MouseMouseENGLISH\WIN95\MOUSE\Display adaptersVideoENGLISH\WIN95\VGA\PCMCIAZoomed Video PortEnglish\Win95\PCMCIA\To re-install applications under Windows 95, click on Start, then Run….  Based on the location of the
application, run the setup program to install the application.  The following table lists the applications and
their locations:
Table 1-41Location of Applications in the System Utility CDNameFunctionLocationSleep Manager0V Suspend utilityENGLISH\WIN95\SLEEPMGR\Y-StationAudio applicationENGLISH\WIN95\YstationSafeOFFProtect if user accidentally
press the power switchENGLISH\WIN95\SAFEOFFDrivers for Windows 3.x and Windows NT are also found in the System Utility CD if you should need
them.
                                                       2
In some areas, a different operating system may be pre-loaded instead of Windows 95.
3
The system utilities and application software list may vary. 
						

							System Introduction1-371.6System Block DiagramFigure 1-15System Block Diagram 
						

							1-38Service Guide1.7Environmental Requirements
Table 1-42Environmental RequirementsItemSpecificationTemperatureOperating (ºC)
+5°C ~ +35°CNon-operating(ºC)
-20°C ~ +60°CHumidityOperating (non-condensing)20% ~ 80%Non-operating (non-condensing)20% ~ 80%Operating Vibration (unpacked)Operating5 - 25.6Hz, 0.38mm;  25.6 - 250Hz, 0.5GSweep rate> 1 minute / octaveNumber of test cycles2 / axis (X,Y,Z)Non-operating Vibration (unpacked)Non-operating5 - 27.1Hz, 0.6G;  27.1 - 50Hz, 0.41mm; 50~500Hz, 2GSweep rate> 2 minutes / octaveNumber of text cycles4 / axis (X,Y,Z)ShockNon-operating (unpacked)40G peak, 11±1ms, half-sineNon-operating (packed)50G peak, 11±1ms, half-sineAltitudeOperating10,000 feetNon-operating40,000 feetESDAir discharge8kV (no error)
12.5kV (no restart error)
15kV (no damage)Contact discharge4kV (no error)
6kV (no restart error)
8kV (no damage) 
						

							System Introduction1-391.8Mechanical Specifications
Table 1-43Mechanical SpecificationsItemSpecificationWeight
  FDD model
  CD-ROM model(includes battery)
2.6 kg. (5.7 lb.)
2.8 kg. (6.2 lb.)Dimensions
(main footprint)W x D x H
306mm x 228mm x 46mm (12.05” x 8.98” x 1.81”) 
						

							C  h  a  p  t  e  r        2 C  h  a  p  t  e  r        2
Major Chips DescriptionMajor Chips Description2-1This chapter discusses the major chips used in the notebook.
2.1Major Component List
Table 2-1Major Chips ListComponentVendorDescriptionM1521AcerSystem data bufferM1523AcerSystem controller chipM7101AcerPower management unit65550C&T (Chips & Technology)Video controllerTI PCI1131Texas InstrumentPCMCIA controllerNS87336VJGNS (National Semiconductor)Super I/O controllerYMF715YamahaAudio ChipT62.062.CAmbitBattery ChargerT62.061.CAmbitDC-DC ConverterT62.064.CAmbitDC-AC Inverter for 11.3”T62.066.CAmbitDC-AC Inverter for 12.1” 
						

							2-2Service Guide2.2ALI M1521
The ALADDIN-III consists of two chips, ALI M1521 and M1523 to give a 586 class system the
complete solution with the most up-to-date feature and architecture for the new
multimedia/multithreading operating system.  It utilizes the BGA package to improve the AC
characterization, resolves system bottleneck and make the system manufacturing easier.  The
ALADDIN-III gives a highly-integrated system solution and a most up-to-date system architecture
including the UMA, ECC, PBSRAM, SDRAM/BEDO, and multi-bus with highly efficient, deep FIFO
between the buses, such as the HOST/PCI/ISA dedicated IDE bus.
The M1521 provides a complete integrated solution for the system controller and data path
components in a Pentium-based system.  It provides 64-bit CPU bus interface, 32-bit PCI bus
interface, 64/72 DRAM data bus with ECC or parity, secondary cache interface including pipeline
burst SRAM or asynchronous SRAM, PCI master to DRAM interface, four PCI master arbiters, and
a UMA arbiter.  The M1521 bus interfaces are designed to interface with 3V and 5V buses.  It
directly connects to 3V CPU bus, 3V or 5V tag, 3V or 5V DRAM bus, and 5V PCI bus.
2.2.1Features
· Supports all Intel/Cyrix/AMD 586-class processors (with host bus of 66 MHz, 60 MHz and
50 MHz at 3V)
· supports M1/K5/Dakota CPUs
· supports linear wrap mode for M1
· Supports asynchronous/pipeline-burst SRAM
· Write-back/dynamic write-back cache policy
· Built-in 8K*2 bit SRAM for MESI protocol to cost and  enhance performance
· Cacheable memory up to 512MB with 11-bit tag SRAM
· Supports 3V/5V SRAMs for tag address
· Supports FPM/EDO/BEDO/SDRAM DRAMs
· RAS lines
· 64-bit data path to memory
· Symmetrical/asymmetrical DRAMs
· 3V or 5V DRAMs
· Duplicated MA[1:0] driving pins for burst access
· No buffer needed for RASJ and CASJ and MA[1:0]
· CBR and RAS-only refresh
· Supports 64M-bit (16M*4, 8M*8, 4M*16) technology DRAMs
· Supports programmable-strength MA buffer
· Supports error checking and correction (ECC) and parity for DRAM
· Supports the most flexible six 32-bit populated banks of DRAM (to spare 12MB for
Windows 95)
· Supports SIMM and DIMM 
						

							Major Chips Description2-3· UMA (unified memory architecture)
· Dedicated UMA arbiter pins
· Supports several protocols from major graphics vendors
· SFB size : 512KB/1MB/2MB/3MB/4MB
· CPU could access frame buffer memory through system memory controller
· Alias address for frame buffer memory
· Fully synchronous 25/30/33 MHz 5V PCI interface
· PCI bus arbiter: five PCI masters and M1523 supported
· Dwords for CPU-to-PCI Memory write posted buffers
· Convert back-to-back CPU to PCI memory write to PCI burst cycle
· DWORDS for PCI-to-DRAM write-posted/read-prefetching buffers
· PCI-to-DRAM up to 133 MB/sec bandwidth (even when L1/L2 write-back)
· L1/L2 pipelined snoop ahead for PCI-to-DRAM cycle
· Supports PCI mechanism #1 only
· PCI spec. 2.1 support. [N(16/8)+8 rule, passive release, fair arbitration]
· Enhanced performance for memory-read-line, memory-read-multiple, and
memory-write-multiple
· Invalidates PCI commands
· DRAM refresh during 5V system suspend
· I/O leakage stopper for power saving during system suspend
· 328-pin or 388-pin BGA process