Acer ASPIRE Z3751, Aspire Z5751, ASPIRE Z5750, ASPIRE Z3750 User Manual

Aspire Z3750 / Z3751 / Z5750 / Z5751

All-In-One Computer Service Guide

Service guide files and updates are available

on the Acer/CSD web site; for more

information, go to http://csd.acer.com.tw

PRINTED IN TAIWAN

Revision History

Refer to the table below for changes made on this version of the Aspire Z3750 / Z3751 / Z5750 / Z5751 All-In-One Computer Service Guide.

Date Chapter Updates

ii Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

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.

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 guide 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 Incorporated. Other brand and product names are trademarks and/or registered trademarks of their respective holders.

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide iii

Conventions

The following textual conventions are used in this service guide.

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.

iv Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

Service Guide Coverage

This Service Guide provides you with all technical information relating to the BASIC CONFIGURATION decided for our "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 FEA TURES 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 P ARTS, 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 AUTHORIZED SERVICE PROVIDERS, your 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.

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide v

vi Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

Table of Contents

Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii

Features and Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

System Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

System Tour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Front View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Left View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Right and Rear Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Hardware Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Chipsets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

BIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Hard Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Optical Disc Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Ethernet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Wireless LAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Webcam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

LCD Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

System Utilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

CMOS Setup Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Accessing the Setup Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Navigating through the Setup Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Setup Utility Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Disassembly Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

System Disassembly 27

Pre-disassembly Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Disassembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Removing the Computer Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Removing the I/O Cable Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Removing the Rear Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Removing the I/O Cable Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Removing the B-CAS Card Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Removing the Optical Disc Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Removing the Scaler Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Removing the USB/Audio Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Removing the Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Removing the Wall Mount Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

Removing the Inverter Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Removing the Graphics Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Removing the Hard Disk Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Removing the Power Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Removing the Heat Sink Fan (HSF) Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Removing the Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

Removing the Memory Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

vii Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

Table of Contents

Removing the Mainboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Removing the I/O Shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Removing the Side Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Removing the Front Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Removing the Capacitive LED Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Removing the Bluetooth Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Removing the Light Bars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Removing the Webcam Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

Removing the Power Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

Removing the Speaker Mesh Cover Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Removing the Touchscreen Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

Removing the LCD Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

Removing the LCD Panel Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Removing the LCD LVDS Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Removing the System Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Hardware Diagnostic Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

System Check Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67

Checkpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

POST Error Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

BIOS Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

Clearing CMOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

System Architecture 85

Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85

Mainboard Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86

Field Replaceable Unit (FRU) List 89

Exploded Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

FRU List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

Model Definitions and Configurations . . . . . . . . . . . . . . . . . . . . . . . . 105

Test Compatible Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Approved Vendor Lists (AVLs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117

Online Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide viii

Chapter 1

Features and Specifications

This chapter lists the features and specifications of the Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO computer. NOTE The items listed in this section are for reference only. The exact configuration of your PC depends

on the model purchased.

System Features

Component Description

Processor • LGA 1156 socket (Socket H), 1156 pin contacts

• Supports the Intel Core i3, i5, and Intel Pentium Dual-Core Processors Chipset Intel H57 Express Chipset Memory • Number of DIMM slots: Four DDR3 DIMM slots

• Maximum memory: 8 GB (using four 2 GB modules) PCI expansion options • One PCI Express x16 slot (for graphics card installation)

• One PCI Express x1 slot (for TV tuner card installation) Display • Display size

– Aspire Z3750: 21.5-inch LCD panel – Aspire Z3751: 21.5-inch LCD touchscreen panel – Aspire Z5750: 23-inch LCD panel – Aspire Z5751: 23-inch LCD touchscreen panel

• Windows 7 compliant multi-touchscreen function for Aspire Z3751 /

Z5751

Audio • Two built-in 5W stereo speakers

• Realtek ALC662-VC0-GR 5.1 Channel High Definition Audio Codec I/O ports • Right panel

– USB ports (two) – Headphone jack – Microphone jack

• Left panel

– Line-in, line-out, and microphone jacks – USB ports (six) – Ethernet jack (RJ-45) – External display (VGA) port – HDMI port – PS/2 keyboard and mouse ports

Media storage • 3.5-inch 25.4 mm 5400/7200 rpm SATA hard disk drive (HDD)

• Slim type SATA optical disc drive (ODD) Card reader • 9-in-1 card reader slot

• Supports MultiMediaCard (MMC), Reduced-Size MultiMediaCard

(RS-MMC), Secure Digital (SD), xD-Picture Card (xD), Secure Digital High Capacity (SDHC), Memory Stick (MS), Memory Stick PRO (MS PRO) cards, CompactFlash Type I and II (CF-I, CF-II), and microdrives

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 1

Component Description

Connectivity • Wired LAN: Onboard 10/100/1000 Ethernet support

• WLAN option: Mini Card wireless network adapter (802.11 b/g/n)

• WPAN option: Bluetooth

• Integrated 2.0 MP webcam Digital media protection • Support Blu-ray Disc content protection

• B-CAS card – This optional card allows users to access protected digital

TV broadcasts.

Power supply 220 W power supply unit with PFC or non-PFC option (power factor

correction)

Operating system support • Microsoft Windows 7 (Home Premium x64/x86, Home Basic x86)

•FreeDOS

• Linux LL95 Antivirus software McAfee Internet Security Security • BIOS-based user and supervisor passwords

• Kensington lock Power management • ACPI 2.0-compliant

• Energy Star 5.0 compliant

2.1+EDR (Enhanced Data Rate)

Physical Specifications

Aspect Description

System dimension (W × H × D) 99 × 496 × 549 mm (3.9 × 19.53 × 21.61 in) Mainboard form factor Standard DTX Mainboard dimensions (W × H) 200 × 244 mm

2 Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

System Tour

The pictures and tables in this section illustrate the physical outlook of the computer.

Front View

Item Icon Component

1 Integrated webcam 2 Integrated microphone 3 Display screen 4 Power button/indicator

• Blue – System is in power-on mode

• Flashing blue – System is in standby mode 5 Speakers 6 Volume increase capacitive key 7 Volume decrease capacitive key 8 LCD brightness capacitive key 9 Auxiliary lighting capacitive key

NOTES:

• Icons for the capacitive keys are only visible when the system is

turned on.

• The auxiliary lighting capacitive key is designed to provide a light

source when using a keyboard in low-light conditions.

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 3

Left View

Item Icon Component Item Icon Component

1 B-CAS card (optional) cover 9 Ethernet port (RJ-45) 2 Optical disc drive (ODD) 10 USB ports

3 I/O cable cover 11 DVI to D-Sub port (optional) 4 9-in-1 card reader 12 Monitor port (VGA) 5 Slot for optional TV tuner card 13 HDMI port

6 Line-in jack 14 PS/2 mouse port 7 Line-out jack 15 PS/2 keyboard port 8 Microphone jack 16 AC power jack

4 Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

Right and Rear Views

Item Icon Component

1 Mounting holes for wall mount option 2 USB ports 3 Microphone jack

4 Headphone jack 5 Kensington slot

6 Computer stand

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 5

Hardware Specifications

Processor

Item Specification

Intel

Core™ Intel® Pentium

Model i5-670 i5-660 i5-650 i3-550 i3-540 i3-530 G6950 Clock speed 3.46 GHz 3.33 GHz 3.2 GHz 3.2 GHz 3.06 GHz 2.93 GHz 2.8 GHz Intel® Smart

Cache Bus/core ratio 26 25 24 24 23 22 21 # of cores 2 DMI 2.5 GT/s Socket LGA 1156 Package type 32 nm Max TDP 73 W

4 MB 4 MB 4 MB 4 MB 4 MB 4 MB 3 MB

Chipsets

Item Specification

System chipset Intel H57 Express Chipset Super I/O IT8721F Super I/O IT8721F

BIOS

Item Specification

BIOS chip AMI BIOS Setup utility CMOS Setup Utility

Memory

Item Specification

Controller Integrated in the Intel processor Number of DIMM slot 4 Maximum memory 8 GB (using four 2 GB modules) Data rate 1333 MT/s Supported capacities 1 or 2 GB DIMM type 240-pin DDR3 SO-DIMM Supported brands Apacer, Hynix, Kingston, Nanya, Samsung, and Unifosa Population rule You can install memory modules in any combination as long as they match the above

specifications.

6 Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

Hard Disk Drive

Item Specification

Controller Integrated in the Intel H57 Express Chipset Form factor 3.5-inch 9.5 mm Interface SATA 2.0 Supported capacities

160 GB • HGST HDT721016SLA380 / HDS721016CLA382 (7200 rpm)

• WD WD1600AAJS-22L7A0 (7200 rpm)

320 GB • HGST HDT721032SLA380 / HDS721032CLA362 (7200 rpm)

• Seagate ST3320418AS (7200 rpm)

• WD WD3200AAJS-22L7A0 (7200 rpm)

500 GB • HGST HDS721050CLA362 (7200 rpm)

• Seagate ST3500418AS (7200 rpm)

• WD WD5000AAKS-22V1A0 (7200 rpm)

640 GB • HGST HDT721064SLA360 / HDS721064CLA332 (7200 rpm)

• Seagate ST3640623AS (7200 rpm)

• WD WD6400AAKS-22A7B2 (7200 rpm) 750 GB HGST HDS721075CLA332 (7200 rpm) 1 TB • HGST HDT721010SLA360 / HDS721010CLA332 (7200 rpm)

• Seagate ST31000528AS (7200 rpm)

• WD WD10EADS-22M2B0 / WD10EARS-22Y5B1 (5400 rpm)

1.5 TB • Seagate ST31500341AS (7200 rpm)

• WD WD15EADS-22P8B0 (5400 rpm) 2 TB WD WD20EADS-22R6B0 (5400 rpm)

Optical Disc Drive

Item Specification

Controller Integrated in the Intel H57 Express Chipset Type DVD-Super Multi double-layer or Blu-ray Disc combo drive option Form factor Slim type Tray height (mm)) 12.7 mm Interface SATA Supported models

DVD-Super Multi double-layer drive

Blu-ray Disc combo drive

• HLDS GT31N

• PLDS DS-8A5SH

• Panasonic UJ141AL/UJ240A

• HLDS CT21N

Ethernet

Item Specification

Controller Integrated in the Intel H57 Express Chipset LAN protocol 10/100/1000 Mbps LAN connector type RJ-45

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 7

Wireless LAN

Item Specification

WLAN module Realtek RTL8191SU Wireless antenna kit Lite-On WN6607LH Protocol 802.11 b/g/n Form factor PCIe Mini Card (half)

Bluetooth

Item Specification

Model • Lite-On WB111C Bluetooth Kit

• Chicony BC10B Bluetooth Kit

Version Bluetooth 2.1 + EDR

Audio

Item Specification

Controller Realtek ALC662-VC0-GR 5.1 Channel High Definition Audio Codec Features • Two built-in 5W stereo speakers

• Right panel audio jacks – Headphone jack – Microphone jack

• Left panel audio jacks – Line-in jack – Line-out jack – Microphone jack

Webcam

Item Specification

Resolution 2.0 MP Supported models Primax 50-704A4WNT8

8 Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

LCD Panel

Item Specification

Model Aspire Z3750 / Z3751 Aspire Z5750 / Z5751 Screen size (diagonal, inch) 21.5-inch 23-inch Type Wide XGA Resolution 1920 × 1080 Backlight CCFL Interface LVDS Brightness (typical) 300 nits Display colors 16.7M Aspect ratio 16:9 Contrast ratio 1000:1 Response time (typical) 5 ms Touchscreen • Aspire Z3750: No

• Aspire Z3751: Yes Surface treatment AG type, 3H hard coating, Haze 25 Supported models

Inverter board • Darfon VZ.13156.B01

• AUO M215HW01

• AUO M215HW01 V0 0H

• LG LM215WF1

• Sumida IV30260SPEC139

V0 0G

• Aspire Z5750: No

• Aspire Z5751: Yes

• LG LM230WF1 TLA5 LF

• SEC LTM230HT01 A09 LF

• SEC LTM230HT01 A10 LF

Power Supply Unit

Item Specification

Output (max.) 220–240 W Supported models • Chicony CPB09-D220A / CPB09-D220R / CPB09-D220E

• Delta DPS-220UB A / DPS-220UB-1 A / DPS-220UB-2 B

• Lite-On PS-5221-06A1 / PE-5221-08AP / PS-5221-9AE

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 9

10 Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

Chapter 2

System Utilities

CMOS Setup Utility

CMOS Setup Utility is a hardware configuration program built into the system ROM. Since most systems are already properly configured and optimized, there is normally no need to run this utility.

You will need to run this utility under the following conditions:

• When changing the system configuration including:

• Setting the system time and date

• Configuring the system drives and peripherals

• Specifying the boot device sequence

• Configuring the power management modes

• Setting up system passwords or making other changes to the security setup

• When trying to resolve IRQ conflicts

• When a configuration error is detected by the system and you are prompted ("Run Setup" message) to make changes to the BIOS settings.

The Setup Utility 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. The values take effect when the system is booted. POST uses these values to configure the hardware. If the values and the actual hardware do not agree, POST generates an error message. You must run this utility to change the hardware settings from the default or current configuration.

IMPORTANT If you repeatedly receive “Run Setup” messages, the RTC battery located on the mainboard

(BT1) may be defective. In this case, the system cannot retain configuration values in CMOS. Replace the RTC battery with a new one.

NOTE For ease of reading, CMOS Setup Utility will be simply referred to as “Setup” or “Setup Utility” in this

Service Guide.

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 11

Accessing the Setup Utility

1. Turn on the computer. If the computer is already turned on, save your data and close all open applications, then restart the

computer.

2. During POST, press Delete. If you fail to press Delete before POST is completed, you will need to restart the computer.

Use the Up/Down/Left/Right arrow keys to move between the menu options, then press Enter to execute that option.

Some options lead to pop-up dialog boxes that prompt you to verify that you wish to execute that option. Other options lead to dialog boxes that prompt you for information.

Some options (marked with a ) lead to submenus that enable you to change the values for the option. Use the Up/Down/Left/Right arrow keys to scroll through the items in the submenu

12 Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

Navigating through the Setup Utility

Use the keys listed in the legend bar on the bottom of the Setup screen to work your way through the various menu and submenu screens of the Setup Utility. The table below lists these legend keys and their respective functions.

Key Function

Up/Down/Left/ Right arrow keys

Enter • To open the page for the currently selected menu/submenu

PgUp and PgDn Move the cursor to the previous and next page of a multipage menu. Home Move the cursor to the first page of a multipage menu. End Move the cursor to the last page of a multipage menu. + and - To select a value for the currently selected field (only if it is user-configurable). Press these

Esc If you press this key:

F1 To bring up the General Help

F9 Press to load default system values. F10 Press to save changes and close the Setup Utility.

Move the cursor to the menu/field you want.The currently selected field will be highlighted.

• To apply a field value.

keys repeatedly to display all possible entries. A parameter that is enclosed in square brackets [ ] is user-configurable. Grayed-out parameters are not user-configurable for one of the following reasons:

• The field value is auto-configured or auto-detected.·

• The field value is informational only.

• The field is password-protected.

• On one of the primary menu screens, the Exit

• On a submenu screen, the previous screen displays.

• When you are making selections from a pop-up menu, closes the pop-up without making a selection.

window. The General Help window describes other Setup

navigation keys that are not displayed on the legend bar.

menu displays.

Setup Utility Menus

The Setup Utility has twelve menus for configuring the various system functions. These include:

• Product Information

• Standard CMOS Features

• Advanced BIOS Features

• Advanced Chipset Features

• Integrated Peripherals

• Power Management Setup

NOTES • The screenshots used in this section are for illustration only. The values displayed may not be

the same as those in your computer.

• In the descriptive tables following each of the menu screen illustrations, settings in boldface are the default and suggested settings.

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 13

• PC Health Status

• Frequency/Voltage Control

• BIOS Security Features

• Load Default Settings

• Save & Exit Setup

• Exit Without Saving

Product Information

Field Description

Processor Type Type of processor installed on the system Processor Speed Speed of the processor installed on the system System Memory Size of system memory detected during boot-up Product Name Official model name of the computer. System Serial Number System serial number. System BIOS Version Current system BIOS version BIOS Release Date Date when the CMOS setup utility was released. Asset Tag Number System asset tag number

14 Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

Standard CMOS Features

Field Description Value

System Date Sets the system date. MM/DD/YYYY

(month/day/year)

System Time Sets the system time. HH:MM:SS

(hour:minute:second)

AHCI Port 1–4 Y our computer support s four SATA channels, each channel allows one SATA device to be

installed. Press Enter to display the individual configuration screen of installed SATA drive(s).

Halt On Determines whether the system will stop for an error during the

POST. Options include:

• All Errors - Any error detected will pause the system.

• No Errors - BIOS will ignore any errors detected during POST

• All, but Keyboard - If a keyboard error is detected, BIOS will

pause the system.

All Errors No Errors

All, But Keyboard

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 15

Advanced BIOS Features

Field Description Value

Quick Boot When enabled, the system starts up more quickly be elimination some of

the POST routines.

Quiet Boot When enabled, BIOS will show a full screen logo when booting; if

disabled, BIOS will show the diagnostic POST screen when booting.

1st/2nd/3rd/4th Boot Device

Hard Disk Drive Priority

Optical Disk Drive Priority

Removable Device Priority

Network Device Priority

Bootup Num-Lock If you set this item to On, the keyboard Num Lock key will be active when

Boot Sector Virus Protection

USB Beep Message

Displays the device assigned to the specified boot sequence. The Setup Utility attempts to boot the operating system in this order. By default, the computer searches for boot devices in the following order:

• Hard disk

• Optical drive (CD/DVD)

• Removable device

• Network boot (LAN)

Press Enter to specify the boot device priority sequence for the installed hard drive(s).

Press Enter to specify the boot device priority sequence for the installed optical drive.

Press Enter to specify the boot device priority sequence for removable drives.

Press Enter to specify the boot device priority sequence foe available network drives.

the computer boots up. If set to Disabled, when anything attempts to access the boot sector or

hard disk partition table, there will be no warning message. Select whether to allow the BIOS to emit error beeps or display error

messages during USB device enumeration.

Enabled

Disabled

Enabled

Disabled

Off Enabled

Disabled

Enabled

Disabled

16 Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

Advanced Chipset Features

Field Description Value

AMD Cool ’n’ Quiet

AMD-V Select whether to enable the AMD-V Technology. This technology

Memory Hole Remapping

Hybrid SLI Select whether to enable the Hybrid SLI technology when a nVIDIA

Primary Video When a graphics card is installed, you have the option to select

UMA Frame Buffer Size

Current UMA Size Displays the size of video memory (located in upper memory area–UMA) detected during

Select whether to enable the AMD Cool 'N' Quiet Technology. This technology allows a compliant OS to dynamically adjust the system voltage and core frequency for reduced heat and noise emission.

allows a single platform to run multiple operating systems in independent partitions.

When enabled, some or all of the memory between the 2 GB and 4 GB limits to addresses above 4 GB. This is a workaround for the PCI hole or PCI memory hole which is a limitation of 32-bit hardware and 32-bit operating systems that causes a computer to appear to have less memory available than is physically installed.

Note: This feature is useful for systems running on 64-bit OS and those 32-bit systems that support the Physical Address Extension method.

graphics card is installed. Hybrid SLI increases graphics performance with GeForce

management with HybridPower™.

which graphics controller to activate. Note: When this field is set to Auto, the graphics controller priority

sequence is: PCIE, Onboard, then PCI. When a graphics card is installed, you can select how the system

video memory (frame buffer) is allotted.

boot-up.

Boost and provides intelligent power

Enabled

Disabled

Enabled

Disabled

Enabled

Disabled

Enabled

Disabled

Auto

PCIE Onboard PCI

Auto

32 MB 64 MB 128 MB 256 MB

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 17

Integrated Peripherals

Field Description Value

Onboard SATA Controller

Onboard SATA Mode

Onboard USB Controller

Legacy USB Support

USB Storage Emulation

Onboard Graphics Controller

Onboard Audio Controller

Onboard LAN Controller

Onboard LAN Option ROM

Enables or disables the onboard SATA controller. Enabled

Set the operating mode for the onboard SATA controller. Native IDE

Enables or disables the onboard USB controller. Enabled

Enables or disables support for a USB mouse and USB keyboard. When enabled, any attached USB mouse or USB keyboard can control the system even when there is no USB driver loaded onto the system.

If set to Auto, a USB devices with a capacity of equal or less than 2 GB will be emulated as a bootable floppy disk.

Enables or disables the onboard graphics controller. Enabled

Enables or disables the onboard audio controller. Enabled

Enables or disables the onboard LAN controller. Enabled

Enables or disables the onboard LAN option ROM function. Enabled

Disabled

Enabled

Disabled

Auto

Floppy Hard Disk

Disabled

18 Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

Power Management Setup

Field Description Value

ACPI Suspend Mode

Deep Power Off Mode

Power On by RTC Alarm

Power On by PCIE Devices

Power On by PCI Devices

Power On by Modem Ring

Power On by Onboard LAN

Use this item to define how your system suspends. Default value is S3 (STR), the suspend mode is suspend to RAM, i.e., the system shuts down with the exception of a refresh current to the system memory.

Enables or disables compliance to the Energy-using Products Lot 6 Directives (EuP Lot 6).

Enables or disables the system to wake up from a power-saving mode when an RTC alarm occurs.

Enables or disables the system to wake up from a power-saving mode when an event occurs on an installed PCI Express device.

Enables or disables the system to wake up from a power-saving mode when an event occurs on an installed PCI device.

Enables or disables the system to wake up from a power-saving mode when a modem signal is received. network message

Enables or disables the system to wake up from a power-saving mode when the onboard LAN controller received a network message.

S3 (STR)

S1 (POS)

Enabled

Disabled Enabled

Disabled

Enabled

Disabled

Enabled

Disabled

Enabled

Disabled

Enabled

Disabled

Wake Up by PS/2 KB/Mouse

Wake Up by USB KB/Mouse

Restore On AC Power Loss

Enables or disables the system to wake up from a power-saving mode when a PS/2 keyboard or mouse is used.

Enables or disables the system to wake up from a power-saving mode when a USB keyboard or mouse is used.

Select the power state when an AC power loss occurs.

• Off - The computer remains off until the power button is pressed.

• Last State - The computer reverts to the last power state before the power loss occurred.

• On - The computer switches back on after the AC power loss.

Enabled

Disabled

Enabled

Disabled Power Off

Power On

Last State

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 19

PC Health Status

Field Description Value

CPU Temperature System Temperature CPU Fan Speed System Fan Speed CPU Core +1.1V +3.30V +5.00V +12.0V 5VSB VBAT

Smart Fan When enabled, fan speed will speed up or slow down depending on

These items lets you monitor the parameters for critical voltages, temperatures and fan speeds.

the system temperature.

Enabled

Disabled

20 Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

Frequency/Voltage Control

Field Description Value

Enable Clock to All DIMM/PCI

Spread Spectrum When the mainboard's clock generator pulses, the extreme values of

When enabled, clock signals will be sent to the PCI and memory slots regardless of whether the slot is occupied or not.

the pulses creates EMI (electromagnetic interference). Set this field to Enabled to reduce this EMI level. This reduces interference problems with other electronics in the area.

Note: Remember to disable the Spread Spectrum feature if you are overclocking. A slight jitter can introduce a temporary boost in clock speed causing the overclocked processor to lock up.

Enabled

Disabled

Enabled

Disabled

Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide 21

BIOS Security Features

Field Description Value

Supervisor Password Displays the supervisor password status. When set to Installed, this

password will allow the user to access and change all settings in the Setup Utility.

User Password Displays the user password status. Only the following menus will be

accessible when this password is set as Installed:

• System Date and System Time

• Exit Without Saving

Change Supervisor Password

Change User Password

Press Enter to change the supervisor password.

Press Enter to change the user password.

Installed Not Installed

Note the following before you define a system password:

• The maximum length of password contains 8 alphanumeric characters. The following keys are valid:

– A-Z, a-z (case-insensitive) – 0-9 – ` - + [ ] \ ; ' , . /, – Special keypad characters: 0-9 / * - +

• When you are prompted to enter a password, you have three tries before the system halts. Do not forget your password. If you forget your password, you may have to return your computer to your dealer to reset it.

22 Aspire Z3750 / Z3751 / Z5750 / Z5751 AIO Computer Service Guide

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