Acer Veriton M275 User manual

i
Acer
Veriton M275 Service Guide
PRINTED IN TAIWAN

ii
Revision History
Please refer to the table below for the updates made on this service guide.
Date Chapter Updates

iii
Copyright
Copyright © 2010 by Acer Incorporated. All rights reserved. No part of this publication may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in
any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, without
the prior written permission of Acer Incorporated.

iv
Disclaimer
The information in this guide is subject to change without notice.
Acer Incorporated makes no representations or warranties, either expressed or implied, with respect to the
contents hereof and specifically disclaims any warranties of merchantability or fitness for any particular
purpose. Any Acer Incorporated software described in this manual is sold or licensed "as is". Should the
programs prove defective following their purchase, the buyer (and not Acer Incorporated, its distributor, or its
dealer) assumes the entire cost of all necessary servicing, repair, and any incidental or consequential
damages resulting from any defect in the software.
Acer is a registered trademark of Acer Corporation.
Intel is a registered trademark of Intel Corporation.
Pentium Dual-Core, Celeron Dual-Core, Core 2 Duo, Core 2 Quad, Celeron, and combinations thereof, are
trademarks of Intel Corporation.
Other brand and product names are trademarks and/or registered trademarks of their respective holders.

v
Conventions
The following conventions are used in this manual:
SCREEN
MESSAGES Denotes actual messages that appear on screen.
NOTE Gives additional information related to the current topic.
WARNING Alerts you to any physical risk or system damage that might result from doing
or not doing specific actions.
CAUTION Gives precautionary measures to avoid possible hardware or software
problems.
IMPORTANT Reminds you to do specific actions relevant to the accomplishment of
procedures.

vi
Service Guide Coverage
This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION
decided for Acer's "global" product offering. To better fit local market requirements and enhance product
competitiveness, your regional office MAY have decided to extend the functionality of a machine (e.g. add-on
card, modem, or extra memory capability). These LOCALIZED FEATURES will NOT be covered in this generic
service guide. In such cases, please contact your regional offices or the responsible personnel/channel to
provide you with further technical details.
FRU Information
Please note WHEN ORDERING FRU PARTS, that you should check the most up-to-date information available
on your regional web or channel. If, for whatever reason, a part number change is made, it will not be noted in
the printed Service Guide. For ACER-AUTHORIZED SERVICE PROVIDERS, your Acer office may have a
DIFFERENT part number code to those given in the FRU list of this printed Service Guide. You MUST use the
list provided by your regional Acer office to order FRU parts for repair and service of customer machines.

vii
System Tour 1
Features 1
Block Diagram 5
System Components 6
Front Panel 6
Rear Panel 7
Hardware Specifications and Configurations 8
Power Management Function(ACPI support function) 11
System Utilities 12
CMOS Setup Utility 12
Entering CMOS setup 13
Navigating Through the Setup Utility 13
Setup Utility Menus 14
System Disassembly 27
Disassembly Requirements 27
Pre-disassembly Procedure 28
Removing the Side Panel 29
Removing the Front Bezel 30
Removing the Heat Sink Fan Assembly 31
Removing the Processor 32
Removing the Memory Modules 33
Removing the VGA Card 34
Removing the Hard Disk Drive 35
Removing the Optical Drive 37
Removing the System Fan 39
Removing the Power Supply 40
Removing the OBR and Intrusion Alarm Assembly 41
Removing the Card Reader 43
Removing the Internal Speaker 44
Removing the Mainboard 45
Removing Other Side Panel 47
Removing the Front I/O and USB Assembly 48
Removing the Power Switch and LED Cable Assembly 50
System Troubleshooting 52
Hardware Diagnostic Procedure 52
System Check Procedures 53
Power System Check 53
System External Inspection 53
System Internal Inspection 53
Beep Codes 54
Checkpoints 55
BIOS Recovery 57
Jumper and Connector Information 58
M/B Placement 58
Jumper Setting 60
Setting Jumper 60
Table of Contents

viii
FRU (Field Replaceable Unit) List 68
Veriton M275 Exploded Diagram 69
Veriton M275 FRU List 70

Chapter 1 1
Features
Below is a brief summary of the computer’s many feature:
NOTE: The features listed in this section is for your reference only. The exact configuration of the system
depends on the model purchased.
Operating System
•Microsoft Windows 7 Home Premium (X86/ X64)
•Microsoft Windows 7 HB X86
•Microsoft Windows 7 Professional (X86/ X64)
•Microsoft Windows Vista Business X86
•Microsoft Windows XP Professional
•FreeDOS
•Linpus X-Window
Processor
•Socket Type: Intel LGA775
•Socket Quantity: 1
•Processor Type:support Yorkfield and Wolfdale CPUs and list in FRU.
Chipset
•Intel G41 + ICH7
PCB
•244mm*244mm
Memory subsystem
•Socket Type: DDRIII DIMM Memory Slots.
•Socket Quantity: 2
•Memory Type:DDRIII.
•Speed:1066 MHz
•Capacity support: Maxmium to 4GB.
•Design Criteria:
•Support Dual channel
Hard disk
•Support SATA interface.
•3.5", 25.4mm, 160/320 or higher capacity.
•7200 rpm.
System Tour
Chapter 1

2Chapter 1
Optical disk
•Support one SATA 5.25" standard ODD
•Support DVD-ROM, DVD-SuperMulti
Serial ATA controller
•Connector Type: SATA IDE connector.
•Connector Quantity: 4
•Storage Type support:
•3.5" SATA/SATAII HDD.
•DVD and SuperMulti.
•Default AHCI mode in normal BIOS and IDE mode in non-Windows BIOS.
Audio
•Chip : HD audio codec support 5.1Channel.
•Connectors support:
•Audio jacks color coding: should meet Microsoft Windows Logo Program Device Requirements:
Audio-0002
•1 front panel audio header (2*5)
•S/N ration: 90dB at rear output jack
•Follow Acer Audio spec and should support Acer Internal speaker.
•BIOS should meet MS Pin Configuration Guidelines for High Definition Audio Devices
LAN
•Broadcom 57760,Single Chip Giga Controller
•support 10/100/1000
USB ports
•Ports Quantity: 8
•4 port for rear ports.
•On-board: two 2*5 headers.
•4 ports for front daughter board.
•Connector Pin: standard Intel FPIO pin definition.
•Data transfer rate support: USB 2.0/1.1
Extension slot
•PCI Express Slot Type: x16
•PCI Express x16 Slot Quantity: 1
•PCI Express Slot Type: x1
•PCI Express x1 Slot Quantity: 1
•2 PCI
All On-Board Connectors
•Rear I/O connectors
•1 D-Sub port
•1COM port (only for commercial vRonnie)
•4 USB ports

Chapter 1 3
•1 RJ45 LAN port
•3 audio jack for 5.1 channel phone jack.
•2 PS2 keyboard/mouse connector
•On-board connectors
•1 LGA775 socket.
•2 DDR3 memory sockets.
•1 PCI Express x16 slot.
•2 PCI slot +1 PCI Express x 1 slot.
•Two 2*5 pin Intel FPIO specification USB pin connectors(follow Intel FPIO standard Specification).
•One 2*5 pin Intel FPIO spec. Microphone In/ Headphone Out pin connectors.
•One 4 pin CPU Fan connector.
•One 24pin ATX interface PS3/PS2 SPS connector.
•One 4 pin CPU power connector.
•One 2*7 pin front panel IO header.
•One Jumper for clear CMOS.
•One on board buzzer.
•One reserved 2pin GPIO connector (for Intrusion).
•1 LPT port header.
•1 COM2 port header.
•1 TPM header.
•One 1*3 System FAN Header.
•1 Internal speaker header.
•1 OBR header.
•1 FDD socket .
•1 SPDIF header.
Buzzer
•1 on board buzzer
System BIOS
•BIOS Type: AMI with PackedBell skin.
•Size:8Mb.
Power supply
•300W/250W in stable mode (Acer Assign System Power Unit).
•Design for Intel Eaglelake ICH7 series chipset compatible system.
•Voltage design should be covered +5V, +3.3V, +12V, +5VSB, -12V (attention to 12V output capability).
•Demand for both PFC/Non-PFC solutions.
•Minimum 4 Serial ATA power connector solution should be included (by default).
•Minimum 1 big 4-pin power connector included.
•Minimum 1 small 4-pin power connector included.
•PFC version will not provide switch selector for 115/230V AC input but it should be universal for Europe
and China.
•Non-PFC version should provide switch selector for 115/230V AC input and universal for worldwide
•PS2 style.

4Chapter 1
Block Diagram

Chapter 1 5
System Components
This section is a virtual tour of the system’s interior and exterior components.
Front Panel
No. Component No. Component
1 USB 2.0 ports 11 LAN activity indicator
2 Acer logo 12 Power button
3 Optical drive(1) 13 HDD activity indicator
4 ODD activity indicator(1) 14 MS/MS PRO slot
5 Optical drive(2) 15 USB 2.0 ports
6 ODD activity indicator(2) 16 SD/MMC(Secure Digital/
MultiMedia Card)slot
7 Smart Media card reader and XD(XD-
Picture) slot 17 Optical drive button(2)
8 CF I/II (CompactFlash Type I/II) slot 18 Optical drive button(1)
9 Expansion slot(Internal speaker or
FDD) 19 Headphone/Speaker-out/line-out jack
10 Recover jack 20 Microphone-in jack
7
9
8
2
3
5
15
13
14
16
17
18
4
19
120
6
12
11
10

6Chapter 1
Rear Panel
No. Component
1 Power connector
2 PS2 keyboard connector
3COMport
4VGAports
5 USB 2.0 port
6 Microphone/speaker-out/line-in jack
7 Line-out jack
8 Expansion slot(graphics card ect.)
9 Lock Handle
10 Line-in jack
11 COM port
12 Printer port
13 RJ45 LAN port
14 System Fan
15 PS2 mouse connector
16 Fan aperture
1
2
611
3
10
14
16
8
15
4
7
13
12
9
5

Chapter 1 7
Hardware Specifications and Configurations
Processor
BIOS
BIOS Hotkey List
Item Specification
Type support varied Intel processors that the maximum power consumption is equal and
under 65W.
support Intel Core 2 Quad, Core 2 Duo CPU.
Socket Intel LGA775 socket
FSB 1333/1066/800 MHz
Minimum operating speed 0 MHz (If Stop CPU Clock in Sleep State in BIOS Setup is set to Enabled.)
Item Specification
BIOS code programmer AMI Kernel with eMachines
BIOS version P01-A0
BIOS ROM type SPI ROM
BIOS ROM size 8MB
Support protocol Check "2.20 BIOS Version Control" of "Acer DT BIOS Requirements
v1.55" or later version
Device Boot Support 1st priority: SATA HDD
2nd priority: CD-ROM
3rd priority: Removable Device
4th priority: LAN
Support to LS-120 drive NO
Support to BIOS boot block feature YES
Hotkey Function Description
Del Enter BIOS Setup Utility Press while the system is booting to enter BIOS Setup Utility.

8Chapter 1
Main Board Major Chips
Memory Combinations
System Memory
Item Specification
North Bridge Intel G41
South Bridge Intel ICH7
VGA controller Intel G41
Audio controller Realtek ALC662-VC
LAN controller Intel ICH7+Realtek LAN 8111DL
USB controller Intel ICH7
Slot Memory Total Memory
Slot 1 1GB, 2GB 1GB ~2GB
Slot 2 1GB, 2GB 1GB ~2GB
Maximum System Memory Supported 1GB ~4GB
Item Specification
Memory slot number 2 slot
Support Memory size per socket 1GB/2GB
Support memory type DDR3
Support memory interface DDR3 1066MHz
Support memory voltage 1.5V
Support to parity check feature Yes
Support to error correction code (ECC) feature No
Memory module combinations You can install memory modules in any combination as long
as they match the above specifications.

Chapter 1 9
Audio Interface
SATA Interface
Item Specification
Audio controller Intel ICH7+Realtek ALC662-VC
Audio controller type ALC662-VC
Audio channel codec 5.1(3port)
Audio function control Enable/Disable by BIOS setup
Mono or stereo Stereo
Compatibility The ALC662-VC series support host audio controller from the Intel ICH series
chipset, and also from any other HDA compatible audio controller. With EAX/
Direct Sound 3D/I3DL2/A3D compatibility, and excellent software utilities like
environment sound emulation, multiple bands of software equalizer and
dynamic range control, optional Dolby® Digital Live, DTS® CONNECT™, and
Dolby® Home Theater programs, provides an excellent home entertainment
package and game experience for PC users.
Music synthesizer Yes,internal FM synthesizer
Sampling rate 192KHz (max)
MPU-401 UART support Supported
Microphone/Headphone jack Supported
Item Specification
SATA controller Intel ICH7
SATA controller resident bus PCI bus
Number of SATA channel SATA X 2
Support bootable CD-ROM YES

10 Chapter 1
USB Port
Environmental Requirements
Power Management
•Devices wake up from S3 should be less than.
•Devices wake up from S5 should be less than 10 second
Item Specification
Universal HCI USB 2.0/1.1
USB Class Support legacy keyboard for legacy mode
USB Connectors Quantity 2 port for rear ports.
On-board: 3 2*5 headers.
4 ports for front daughter board.
Item Specification
Temperature
Operating +5°C ~ +35°C
Non-operating -20 ~ +60°C (Storage package)
Humidity
Operating 15% to 80% RH
Non-operating 10% to 90% RH
Vibration
Operating (unpacked) 5 ~ 500 Hz: 2.20g RMS random, 10 minutes per axis in all 3 axes.
5 ~500 Hz: 1.09g RMS random, 1 hour per axis in all 3 axes.
Devices S1 S3 S4 S5
PowerButtonVVVV
USB Keyboard/Mouse V V N/A N/A
PME Disabled Disabled Disabled Disabled
RCT Disabled Disabled Disabled Disabled
WOR Disabled Disabled Disabled Disabled

Chapter 1 11
Power Management Function(ACPI support function)
Device Standby Mode
•Independent power management timer for hard disk drive devices(0-15 minutes,time step=1minute).
•Hard Disk drive goes into Standby mode(for ATA standard interface).
•Disable V-sync to control the VESA DPMS monitor.
•Resume method:device activated (keyboard for DOS, keyboard &mouse for Windows.
•Resume recovery time 3-5sec
Global Standby Mode
•Global power management timer(2-120minutes,time step=10minute).
•Hard disk drive goes into Standby mode(for ATA standard interface).
•Disable H-sync and V-sync signals to control the VESA DPMS monitor.
•Resume method: Resume to original state by pushing external switch Button,modem ring in,keyboard
an mouse for APM mode.
•Resume recovery time :7-10sec
Suspend Mode
•Independent power management timer(2-120minutes,time step=10minute)or pushing extern switch
button.
•CPU goes into SMM
•CPU asserts STPCLK# and goes into the Stop Grant State.
•LED on panel turns amber colour.
•Hard disk drive goes into SLEEP mode (for ATA standard interface).
•Disable H-sync and V-sync signals to control the VESA DPMS monitor.
•Ultra I/O and VGA chip go into power saving mode.
•Resume method: Resume to original state by pushing external switch Button,modem ring in,keyboard
an mouse for APM mode
•Return to original state by pushing external switch button,modem ring in and USB keyboard for ACPI
mode.
ACPI
•ACPI specification 1.0b
•S0,S1,S2 and S5 sleep state support.
•On board device power management support.
•On board device configuration support.

Chapter 2 12
CMOS Setup Utility
CMOS setup is a hardware configuration program built into the system ROM, called the complementary metal-
oxide semiconductor (CMOS) Setup Utility. Since most systems are already properly configured and
optimized, there is no need to run this utility. You will need to run this utility under the following conditions.
•When changing the system configuration settings
•When redefining the communication ports to prevent any conflicts
•When modifying the power management configuration
•When changing the password or making other changes to the security setup
•When a configuration error is detected by the system and you are prompted ("Run Setup"
message) to make changes to the CMOS setup
NOTE: If you repeatedly receive Run Setup messages, the battery may be bad. In this case, the system
cannot retain configuration values in CMOS. Ask a qualified technician for assistance.
CMOS setup loads the configuration values in a battery-backed nonvolatile memory called CMOS RAM. This
memory area is not part of the system RAM which allows configuration data to be retained when power is
turned off.
Before you run the CMOS Setup Utility, make sure that you have saved all open files. The system reboots
immediately after you close the Setup.
NOTE: CMOS Setup Utility will be simply referred to as “BIOS”, "Setup", or "Setup utility" in this guide.
The screenshots used in this guide display default system values. These values may not be the same
those found in your system.
System Utilities
Chapter 2