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

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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

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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

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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

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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

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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.

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

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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

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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

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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

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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

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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.

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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

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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

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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.

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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

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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

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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

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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.

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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

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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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To set a system password:

NOTE You need to set a supervisor password first before setting the user password.

1. Select Change Supervisor Password or Change User Password, then press Enter.

The password box appears.

2. Type a password then press Enter. IMPORTANT Be very careful when typing your password because the characters do not appear on the

screen. Only shaded blocks representing each typed character are visible.

3. Retype the password to verify the first entry, then press Enter. You will be prompted to save the new password.

4. Press Enter.

5. Press F10 to save the password and close the Setup Utility.

To change a system password:

1. Select Change Supervisor Password or Change User Password, then press Enter. The password box appears.

2. Type the original password, then press Enter.

3. Type a new password, then press Enter.

4. Retype the new password to verify the first entry, then press Enter.

You will be prompted to save the new password.

5. Press Enter.

6. Press F10 to save the password and close the Setup Utility.

To remove a system password:

NOTE When the supervisor password is removed, the user password will also be remove.

1. Select Change Supervisor Password or Change User Password, then press Enter.

The password box appears.

2. Type the original password, then press Enter.

3. Press Enter twice without entering anything in the new and confirm password fields.

You will be prompted to confirm the password removal.

4. Press Enter.

5. Press F10 to save the changes you made and close the Setup Utility.

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Load Default Settings

Execute this menu to load the factory-default settings for all Setup parameters. Keyboard shortcut: F9

Perform the steps below to load the system default settings:

1. Select Load Default Settings You will be prompted to load the system defaults.

2. Select OK, then press Enter.

3. Press F10 to save the changes you made and close the Setup Utility.

, then press Enter.

Save & Exit Setup

Execute this menu to save the changes made and closes the Setup Utility. Keyboard shortcut: F10

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Exit Without Saving

Execute this menu to closes the Setup Utility without making any changes.

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Chapter 3

System Disassembly

This chapter provides step-by-step instructions on how to disassemble the computer for maintenance and troubleshooting purposes.

Disassembly Tools

In performing the disassembly process, you will need the following tools:

• Wrist-grounding strap and conductive mat for preventing electrostatic discharge

• Philips screwdriver

• Hex screwdriver

• Flat screwdriver

NOTES • To reinstall the system components and assemble the unit, perform the disassembly procedures in

reverse.

• The screws for the different components vary in size. During the disassembly process, group the screws with their corresponding components to avoid mismatches when putting back the components.

Pre-disassembly Procedure

Before proceeding with the disassembly procedure, perform the steps listed below:

1. Make sure that the optical disc drive and the card reader slot are empty.

2. Turn off the power to the computer and all peripherals.

3. Unplug the power cord from the computer.

4. Unplug the network cable and all connected peripheral devices from the computer.

5. Place the computer on a flat, steady surface with the rear cover facing upward.

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Disassembly Procedures

Removing the Computer Stand

1. Perform the “Pre-disassembly Procedure” on page 27.

2. Use a flat screwdriver to pry off the plastic shell covering the computer stand screws.

3. Remove the screws securing the computer stand.

Quantity Color Torque Part Number

3 Black 4.0–4.5 kgf-cm –

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

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4. Remove the computer stand.

Removing the I/O Cable Cover

1. Perform the “Pre-disassembly Procedure” on page 27.

2. Remove the I/O cable cover.

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Removing the Rear Cover

1. Remove the computer stand and the I/O cable cover by following the procedures described on pages 28 and 29.

2. Grasp the rear cover on the I/O port area and pull up to disengage the cover from the front bezel. The picture below shows the location of the plastic snaps securing the rear cover. Pull up the rear cover

on these locations to release these snaps.

3. Push on the areas highlighted on the below picture to disengage the rear cover from the chassis.

4. Remove the rear cover.

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

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Removing the I/O Cable Plate

1. Remove the rear cover by following the procedure described on the previous page.

2. Push the latch to disengage the I/O cable plate from the chassis (a), then remove the I/O cable plate (b).

Removing the B-CAS Card Bracket

1. Remove the rear cover by following the procedure described on the previous page.

2. Remove the screw securing the B-CAS card bracket.

Quantity Color Torque Part Number

1 Chrome 4.0–4.5 kgf-cm 86.00B75.240

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3. Remove the B-CAS card bracket.

Removing the Optical Disc Drive

1. Remove the rear cover by following the procedure described on page 30.

2. Remove the screw securing the ODD.

Quantity Color Torque Part Number

1 Black 4.5 +/- 0.3 kgf-cm 86.00B75.240

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

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3. Slide the ODD outward, then disconnect the ODD SATA cable from the drive.

4. Remove the ODD from the chassis.

5. Remove the screw securing the ODD bracket.

Quantity Color Torque Part Number

1 Silver 2.0 +/- 0.2 kgf-cm 86.7A122.4R0

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6. Detach the ODD bezel from the module.

Removing the Scaler Board

1. Remove the rear cover by following the procedure described on page 30.

2. Remove the screws securing the scaler board cover.

Quantity Color Torque Part Number

2 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

3. Remove the scaler board cover.

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4. Remove the tape covering the HDMI cable connector.

5. Disconnect all the cables from the scaler board.

6. Remove the screws securing the scaler board.

Quantity Color Torque Part Number

3 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

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7. Remove the scaler board.

A circuit board that is >10 cm above image. Follow local regulations for disposing this type of circuit board.

has been highlighted with a yellow rectangle as shown in the

Removing the USB/Audio Board

1. Remove the rear cover by following the procedure described on page 30.

2. Remove the screw securing the USB/audio board cover.

Quantity Color Torque Part Number

1 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

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

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3. Slide the USB/audio board cover outward to disengage the cover tabs from the chassis, then remove the USB/audio board cover.

4. Disconnect the two cables from the USB/audio board.

5. Remove the screws securing the USB/audio board.

Quantity Color Torque Part Number

2 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

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6. Slide the USB/audio board out of its tabs.

A circuit board that is >10 cm above image. Follow local regulations for disposing this type of circuit board.

has been highlighted with a yellow rectangle as shown in the

Removing the Speakers

1. Remove the rear cover by following the procedure described on page 30.

2. Remove the scaler board by following the procedure described on page 34.

3. Remove the tapes securing the speaker cables to the power supply unit.

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

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4. Remove the screws securing the scaler board cover.

Quantity Color Torque Part Number

4 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

5. Remove the speakers.

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Removing the Wall Mount Plate

1. Remove the rear cover by following the procedure described on page 30.

2. Remove the screws securing the wall mount plate.

Quantity Color Torque Part Number

5 Chrome 4.5 +/- 0.3 kgf-cm 86.5A554.6R0

3. Remove the wall mount plate.

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Removing the Inverter Board

1. Remove the wall mount plate by following the procedure described on the previous section.

2. Remove the screw securing the inverter board cover.

Quantity Color Torque Part Number

1 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

3. Slide the inverter board cover outward to disengage it from the chassis, then remove the cover.

4. Disconnect all cables from the inverter board.

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5. Remove the screws securing the inverter board.

Quantity Color Torque Part Number

2 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

6. Remove the inverter board.

A circuit board that is >10 cm

has been highlighted with a yellow rectangle as shown in the

above image. Follow local regulations for disposing this type of circuit board.

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Removing the Graphics Card

1. Remove the wall mount plate by following the procedure described on page 40.

2. Remove the two hex screws securing the DVI to D-Sub cable to the I/O port panel (a), then detach the cable from the panel (b).

Quantity Color Torque Part Number

2 Chrome 4.5 +/- 0.3 kgf-cm 86.80536.7R2

3. Remove the two hex screws securing the DVI to D-Sub cable to the graphics card (a), then detach the cable from the card (b). Disconnect the HDMI cable from the graphics card as well (c).

Quantity Color Torque Part Number

2 Chrome 4.5 +/- 0.3 kgf-cm 86.80536.7R2

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4. Remove the graphics card assembly from the mainboard.

5. Remove the screw securing the graphics card bracket.

Quantity Color Torque Part Number

1 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

6. Disconnect the graphics card from the riser board.

A circuit board that is >10 cm2 has been highlighted with a yellow rectangle as shown in the above image. Follow local regulations for disposing this type of circuit board.

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7. Remove the screws securing the graphics card riser board, then remove the riser board from the bracket.

Quantity Color Torque Part Number

2 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

A circuit board that is >10 cm above image. Follow local regulations for disposing this type of circuit board.

has been highlighted with a yellow rectangle as shown in the

Removing the Hard Disk Drive

1. Remove the wall mount plate by following the procedure described on page 40.

2. Remove the graphics card assembly by following the procedure described on page 43.

3. Disconnect the power and SATA cables from the hard drive.

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4. Remove the screw securing the hard drive.

Quantity Color Torque Part Number

1 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

5. Slide the HDD assembly outward to disengage the assembly from the chassis, then remove the HDD assembly.

6. Remove the screws securing the hard drive bracket.

Quantity Color Torque Part Number

1 Chrome 4.5 +/- 0.3 kgf-cm 86.5A554.6R0

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7. Remove the hard drive from its bracket.

Removing the Power Supply Unit

1. Remove the wall mount plate by following the procedure described on page 40.

2. Disconnect the 4-pin and 24-pin ATX power cables from their mainboard connectors. a. Press the top portion of the cable’s retaining latch b. Pull the cable straight up from its connector.

3. Disconnect the PSU extension cable.

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4. Remove the screw securing the PSU.

Quantity Color Torque Part Number

1 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

5. Slide the PSU outward to disengage it from the chassis (a), then pull the ATX cables through the chassis opening (b).

6. Remove the screw securing the PSU to it cage.

Quantity Color Torque Part Number

1 Chrome 4.5 +/- 0.3 kgf-cm 86.5A554.6R0

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7. Remove the PSU from its cage.

Removing the Heat Sink Fan (HSF) Assembly

1. Remove the wall mount plate by following the procedure described on page 40.

2. Disconnect the HSF cable from its mainboard connector.

3. Loosen the HSF's spring-loaded screws in a diagonally opposite pattern (an "X" pattern).

Quantity Color Torque Part Number

4 Chrome 6.0 +/- 0.5 kgf-cm –

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4. Remove the HSF assembly.

Removing the Processor

1. Remove the HSF assembly by following the procedure described on the previous section.

2. Disengage the load lever from its latch, then rotate the load lever to the open position.

3. Open the retention plate to expose the socket body.

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4. Gently lift the processor out of its socket.

IMPORTANT When installing a processor:

• Note the golden arrow on the corner to make sure the processor is properly oriented over the socket.

• Moisten a soft cloth with isopropyl alcohol and clean the processor die to remove any thermal grease residue. Wipe the die surface several times to make sure that no particles or dust contaminants are evident. Allow the alcohol to evaporate before continuing. Apply just enough thermal grease to evenly coat the surface of the processor die.

Removing the Memory Modules

1. Remove the wall mount plate by following the procedure described on page 40.

2. Open the holding clips securing the memory modules (a), then remove the memory modules from the

DIMM slots (b).

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Removing the Mainboard

1. Remove the wall mount plate by following the procedure described on page 40.

2. Remove the graphics card and HDD assemblies by following the procedures described on pages 43–45.

3. Remove the power supply unit by following the procedure described on page 47.

4. Remove the HSF assembly, processor, and the memory modules by following the procedures described

on pages 49–51.

5. Disconnect the HDD and ODD SATA cables from the mainboard.

6. Disconnect the rest of the cables connected to the mainboard.

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7. Remove the screws securing the mainboard.

Quantity Color Torque Part Number

4 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

8. Remove the mainboard.

• A circuit board that is >10 cm

has been highlighted with a yellow rectangle as shown in the

above image. Follow local regulations for disposing this type of circuit board.

• The RTC battery has been highlighted with a yellow circle in the above image. Detach the RTC battery and follow local regulations for disposing it.

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Removing the I/O Shield

1. Remove the mainboard by following the procedure described on the previous section.

2. Push the I/O shield to remove it from the chassis.

Removing the Side Bezel

1. Remove the rear cover by following the procedure described on page 30.

2. Remove the screws securing the side bezel.

Quantity Color Torque Part Number

11 (1–11) 2 (12–13) 86.5A554.6R0

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

Chrome 4.5 +/- 0.3 kgf-cm

86.1A524.5R0

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3. Push the plastic tabs securing the side bezel outward.

4. Remove the side bezel.

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Removing the Front Bezel

1. Remove the rear cover by following the procedure described on page 30.

2. Remove the side bezel by following the procedure described on page 54.

3. Remove the screws securing the front bezel.

Quantity Color Torque Part Number

4 Chrome 3.0 +/- 0.3 kgf-cm 86.VA324.5R0

4. Disconnect the webcam cable.

5. Turn over the unit with the display screen facing up.

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6. Push the plastic tabs securing the front bezel.

7. Detach the front bezel from the chassis and turn it over the speaker mesh cover.

The front bezel is still attached to the chassis by the cables connected to the capacitive LED board, Bluetooth module, and the light bars. Proceed to the succeeding sections to remove these three components.

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Removing the Capacitive LED Board

1. Remove the front bezel by following the procedure described on page 56.

2. Disconnect the capacitive LED board cable.

3. Use a flat screwdriver to pry off the capacitive LED board from the front bezel.

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Removing the Bluetooth Module

1. Remove the front bezel by following the procedure described on page 56.

2. Remove the tape protecting the Bluetooth module.

3. Remove the Bluetooth module from the front bezel and turn it over to expose the cable connector

underneath it.

4. Disconnect the Bluetooth module cable.

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Removing the Light Bars

1. Remove the front bezel by following the procedure described on page 56.

2. Pull up the tabs securing the two light bars.

3. Remove the light bars from the front bezel.

4. Disconnect the light bars’ cables.

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Removing the Webcam Module

1. Remove the front bezel by following the procedure described on page 56.

2. Push the tabs securing the webcam module, then remove the module.

Removing the Power Button

1. Remove the front bezel by following the procedure described on page 56.

2. Use a flat screwdriver to pry off the power button from the speaker mesh cover.

3. Remove the power button and the spring coil located underneath it.

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Removing the Speaker Mesh Cover Assembly

1. Remove the front bezel by following the procedure described on page 56.

2. Push the four tabs underneath the speaker mesh cover assembly to the chassis to disengage the cover (a), then remove the cover (b).

3. Expose the bottom side of the cover to access the power button/LED cable.

4. Remove the tape protecting the power button/LED cable.

5. Push the tabs securing the power button/LED cable, then remove the cable.

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6. Use a flat screwdriver to pry the speaker mesh cover from the bottom cover.

Removing the Touchscreen Control Board

Only the Aspire Z3751and Z5751 models have the touchscreen function; thus, the following procedure only applies to these two models.

IMPORTANT If the LCD touchscreen panel becomes defective, the LCD panel with the touchscreen film

and the touchscreen control board should be replace. Return all three components for RMA.

1. Remove the speaker mesh cover by following the procedure described on the previous section.

2. Open the touchscreen film cable connectors (a), then disconnect the film cables (b). Disconnect the power cable of the touchscreen control board as well (c).

3. Remove the screws securing the touchscreen control board.

Quantity Color Torque Part Number

2 Chrome 4.5 +/- 0.3 kgf-cm 86.00B75.240

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4. Remove the touchscreen control board.

A circuit board that is >10 cm above image. Follow local regulations for disposing this type of circuit board.

has been highlighted with a yellow rectangle as shown in the

Removing the LCD Panel

1. Remove the front bezel by following the procedure described on page 56.

2. Disconnect the LCD LVDS cable from the scaler board. Refer to step 5 on page .35.

3. Disconnect the inverter board cables. Refer to step 4 on page .41.

4. For the Aspire Z3751and Z5751 models, remove the touchscreen control board by following the

procedure described on the previous section.

5. Remove the screws securing the LCD panel.

Quantity Color Torque Part Number

4 Chrome 4.5 +/- 0.3 kgf-cm 86.1A524.5R0

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6. Remove the LCD panel from the chassis.

Removing the LCD Panel Brackets

1. Remove the LCD panel by following the procedure described on the previous page.

2. Remove the screws securing the LCD panel bracket (a), then detach the brackets (b).

Quantity Color Torque Part Number

4 Chrome 4.5 +/- 0.3 kgf-cm 86.1A524.5R0

Removing the LCD LVDS Cable

1. Remove the LCD panel by following the procedure described on the previous page.

2. Disconnect the LCD LVDS cable, then pull the cable from the panel.

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Removing the System Cables

1. Remove the LCD panel by following the procedure described on the previous page.

2. Remove the tapes securing the system cables, then release the cables from the chassis.

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Chapter 4

Troubleshooting

This chapter lists the POST error indicators and BIOS beep codes. Instructions for general troubleshooting, BIOS recovery and clearing CMOS data are also provided.

Hardware Diagnostic Procedure

1. Obtain as much detail as possible about the symptoms of the system failure.

2. Verify the symptoms by attempting to recreate the failure by running the diagnostic tests or repeating the

same operation.

3. Refer to “Power System Check” procedure on the next section and the “Beep Codes” section on page 82 to determine which corrective action to take.

System Check Procedures

IMPORTANT The diagnostic tests described in this chapter are only intended to test Acer products.

Non-Acer products, prototype cards, or modified options can give false errors and invalid system responses.

Power System Check

If the system can be powered on, skip this section. Proceed to the “System Internal Inspection” procedure on the next page.

If the system will not power on, do the following:

• Check if the power cable is properly connected to the AC power jack and a functional AC power source.

• Check if the voltage selector switch is set to the correct voltage setting.

System External Inspection

1. Inspect the power and LED indicators on the front panel. Go to “Front View” section on page 3 for the location and description of the LED behaviour.

2. Make sure that the ventilation slots on the rear panel are not blocked.

3. Make sure that there is no point of contact in the system that can cause a power short.

If the cause of the failure is still can not be determined, perform the “System Internal Inspection” procedure described on the next page.

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System Internal Inspection

1. Turn off the power to the computer and all peripherals.

2. Unplug the power cord from the computer.

3. Unplug the network cable and all connected peripheral devices from the computer.

4. Place the computer on a flat, steady surface.

5. Remove the TV stand and the rear cover.

6. Remove the wall mount plate.

7. Verify that the processor, memory module(s), and expansion board(s) are properly seated.

8. Verify that all power and data cables are firmly and properly attached to the installed drives.

9. Verify that all cable connections inside the system are firmly and properly attached to their appropriate

mainboard connectors.

10. Verify that all components are Acer-qualified and supported.

11. Reinstall the wall mount plate.

12. Reinstall the rear cover and the TV stand.

13. Power on the system.

If the cause of the failure is still can not be determined, review the POST messages and BIOS checkpoints during the system startup.

Checkpoints

A checkpoint is either a byte or word value output to I/O port 80h. The BIOS outputs checkpoints during bootblock and Power-On Self Test (POST) to indicate the task the system is currently executing. Checkpoints are very useful in aiding software developers or technicians in debugging problems that occur during the pre-boot process.

Viewing BIOS Checkpoints

Viewing all checkpoints generated by the BIOS requires a checkpoint card, also referred to as a POST card or POST diagnostic card. These are ISA or PCI add-in cards that show the value of I/O port 80h on a LED display . Checkpoints may appear on the bottom right corner of the screen during POST. This display method is limited, since it only displays checkpoints that occur after the video card has been activated.

NOTE Please note that checkpoints may differ between different platforms based on system

configuration. Checkpoints may change due to vendor requirements, system chipset or option ROMs from add-in PCI devices.

Boot Block Initialization Code Checkpoints

The boot block initialization code sets up the chipset, memory, and other components before system memory is available. The following table describes the type of checkpoints that may occur during the boot block initialization portion of the BIOS.

Checkpoint Description

Before D1 Early chipset initialization is done. Early super I/O initialization is done including RTC and

keyboard controller. NMI is disabled.

D1 Perform keyboard controller BAT test. Check if waking up from power management

suspend state. Save power-on CPUID value in scratch CMOS. D0 Go to flat mode with 4GB limit and GA20 enabled. Verify the bootblock checksum. D2 Disable CACHE before memory detection. Execute full memory sizing module. Verify that

flat mode is enabled.

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Checkpoint Description

D3 If memory sizing module not executed, start memory refresh and do memory sizing in

bootblock code. Do additional chipset initialization. Re-enable CACHE. Verify that flat

mode is enabled. D4 Test base 512 KB memory. Adjust policies and cache first 8 MB. Set stack. D5 Bootblock code is copied from ROM to lower system memory and control is given to it.

BIOS now executes out of RAM. D6 Both key sequence and OEM specific method is checked to determine if BIOS recovery is

forced. Main BIOS checksum is tested. If BIOS recovery is necessary, control flows to

checkpoint E0. See the “Boot Block Recovery Code Checkpoints” section for more

information. D7 Restore CPUID value back into register. The Bootblock Runtime interface module is

moved to system memory and control is given to it. Determine whether to execute serial

flash. D8 The Runtime module is uncompressed into memory. CPUID information is stored in

memory. D9 Store the Uncompressed pointer for future use in PMM. Copying Main BIOS into memory .

Leaves all RAM below 1 MB Read-Write including E000 and F000 shadow areas but

closing SMRAM. DA Restore CPUID value back into register. Give control to BIOS POST

(ExecutePOSTKernel). See the “POST Code Checkpoints” section for more information.

Boot Block Recovery Code Checkpoints

The boot block recovery code gets control when the BIOS determines that a BIOS recovery is required because the user has forced the update or the BIOS checksum is corrupt. Refer to “BIOS Recovery” section on page 83 for more information. The following table describes the type of checkpoints that may occur during the boot block recovery portion of the BIOS.

Checkpoint Description

E0 Initialize the floppy controller in the super I/O. Some interrupt vectors are initialized. DMA

controller is initialized. 8259 interrupt controller is initialized. L1 cache is enabled. E9 Set up floppy controller and data. Attempt to read from floppy. EA Enable ATAPI hardware. Attempt to read from ARMD and ATAPI CDROM. EB Disable ATAPI hardware. Jump back to checkpoint E9. EF Read error occurred on media. Jump back to checkpoint EB. E9 or EA Determine information about root directory of recovery media. F0 Search for pre-defined recovery file name in root directory. F1 Recovery file not found. F2 Start reading FAT table and analyze FAT to find the clusters occupied by the recovery file. F3 Start reading the recovery file cluster by cluster. F5 Disable L1 cache. FA Check the validity of the recovery file configuration to the current configuration of the flash

part. FB Make flash write enabled through chipset and OEM specific method. Detect proper flash

part. Verify that the found flash part size equals the recovery file size. F4 The recovery file size does not equal the found flash part size. FC Erase the flash part. FD Program the flash part.

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Checkpoint Description

FF The flash has been updated successfully. Make flash write disabled. Disable ATAPI

hardware. Restore CPUID value back into register. Give control to F000 ROM at

F000:FFF0h.

POST Code Checkpoints

The POST code checkpoints are the largest set of checkpoints during the BIOS preboot process. The following table describes the type of checkpoints that may occur during the POST portion of the BIOS.

Checkpoint Description

03 Disable NMI, Parity, video for EGA, and DMA controllers. Initialize BIOS, POST, Runtime

data area. Also initialize BIOS modules on POST entry and GPNV area. Initialized CMOS

as mentioned in the Kernel Variable "wCMOSFlags." 04 Check CMOS diagnostic byte to determine if battery power is OK and CMOS checksum is

OK. Verify CMOS checksum manually by reading storage area.

If the CMOS checksum is bad, update CMOS with power-on default values and clear

passwords. Initialize status register A.

Initializes data variables that are based on CMOS setup questions.

Initializes both the 8259 compatible PICs in the system 05 Initializes the interrupt controlling hardware (generally PIC) and interrupt vector table. 06 Do R/W test to CH-2 count reg. Initialize CH-0 as system timer.Install the POSTINT1Ch

handler. Enable IRQ-0 in PIC for system timer interrupt. Traps INT1Ch vector to

"POSTINT1ChHandlerBlock." 08 Initializes the CPU. The BAT test is being done on KBC. Program the keyboard controller

command byte is being done after Auto detection of KB/MS using AMI KB-5. 0A Initializes the 8042 compatible Key Board Controller. 0B Detects the presence of PS/2 mouse. 0C Detects the presence of Keyboard in KBC port. 0E Testing and initialization of different Input Devices. Also, update the Kernel Variables.

Traps the INT09h vector, so that the POST INT09h handler gets control for IRQ1.

Uncompress all available language, BIOS logo, and Silent logo modules. 13 Early POST initialization of chipset registers. 24 Uncompress and initialize any platform specific BIOS modules. GPNV is initialized at this

checkpoint. 30 Initialize System Management Interrupt. 2A Initializes different devices through DIM.

See DIM Code Checkpoints section for more information. 2C Initializes different devices. Detects and initializes the video adapter installed in the

system that have optional ROMs. 2E Initializes all the output devices. 31 Allocate memory for ADM module and uncompress it. Give control to ADM module for

initialization. Initialize language and font modules for ADM. Activate ADM module. 33 Initializes the silent boot module. Set the window for displaying text information. 37 Displaying sign-on message, CPU information, setup key message, and any OEM

specific information. 38 Initializes different devices through DIM. See DIM Code Checkpoints section for more

information. USB controllers are initialized at this point. 39 Initializes DMAC-1 & DMAC-2. 3A Initialize RTC date/time.

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Checkpoint Description

3B Test for total memory installed in the system. Also, Check for DEL or ESC keys to limit

memory test. Display total memory in the system.

Checkpoint Description

3C Mid POST initialization of chipset registers. 40 Detect different devices (Parallel ports, serial ports, and coprocessor in CPU, ... etc.)

successfully installed in the system and update the BDA, EBDA…etc. 50 Programming the memory hole or any kind of implementation that needs an adjustment in

system RAM size if needed. 52 Updates CMOS memory size from memory found in memory test. Allocates memory for

Extended BIOS Data Area from base memory . Programming the memory hole or any kind

of implementation that needs an adjustment in system RAM size if needed. 60 Initializes Num-Lock status and programs the KBD typematic rate. 75 Initialize Int-13 and prepare for IPL detection. 78 Initializes IPL devices controlled by BIOS and option ROMs. 7A Initializes remaining option ROMs. 7C Generate and write contents of ESCD in NVRam. 84 Log errors encountered during POST. 85 Display errors to the user and gets the user response for error. 87 Execute BIOS setup if needed / requested. Check boot password if installed. 8C Late POST initialization of chipset registers. 8E Program the peripheral parameters. Enable/Disable NMI as selected. 90 Late POST initialization of system management interrupt. A0 Check boot password if installed. A1 Clean-up work needed before booting to OS. A2 Takes care of runtime image preparation for different BIOS modules. Fill the free area in

F000h segment with 0FFh. Initializes the Microsoft IRQ Routing Table. Prepares the

runtime language module. Disables the system configuration display if needed. A4 Initialize runtime language module. Display boot option popup menu. A7 Displays the system configuration screen if enabled. Initialize the CPU’s before boot,

which includes the programming of the MTRR’s. A8 Prepare CPU for OS boot including final MTRR values. A9 Wait for user input at config display if needed. AA Uninstall POST INT1Ch vector and INT09h vector. Deinitializes the ADM module. AB Prepare BBS for Int 19 boot. AC End of POST initialization of chipset registers. B1 Save system context for ACPI. 00 Passes control to OS Loader (typically INT19h).

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DIM Code Checkpoints

The Device Initialization Manager (DIM) gets control at various times during BIOS POST to initialize different system busses. The following table describes the main checkpoints where the DIM module is accessed.

Checkpoint Description

2A Initialize different buses and perform the following functions: Reset, Detect, and Disable

(function 0); Static Device Initialization (function 1); Boot Output Device Initialization

(function 2). Function 0 disables all device nodes, PCI devices, and PnP ISA cards. It also

assigns PCI bus numbers. Function 1 initializes all static devices that include manual

configured onboard peripherals, memory and I/O decode windows in PCI-PCI bridges,

and noncompliant PCI devices. Static resources are also reserved. Function 2 searches

for and initializes any PnP, PCI, or AGP video devices. 38 Initialize different buses and perform the following functions: Boot Input Device

Initialization (function 3); IPL Device Initialization (function 4); General Device Initialization

(function 5). Function 3 searches for and configures PCI input devices and detects if

system has standard keyboard controller. Function 4 searches for and configures all PnP

and PCI boot devices. Function 5 configures all onboard peripherals that are set to an

automatic configuration and configures all remaining PnP and PCI devices.

POST Error Indicators

When a system error is detected during POST (Power On Self Text), the Setup utility will switch to diagnostic mode and will either:

• Displays a POST error message, or

• Emits a series of beep codes

POST Error Messages

POST error messages tell users what failure the system has detected. Some error messages could be related to a hardware device. Others may indicate a problem with a device configuration. In some cases an error message may include recommendations for troubleshooting or require that you press the Enter key to display recommendations. Follow the instructions on the screen. It is recommended that you correct the error before proceeding, even if the computer appears to boot successfully.

IMPORTANT If your system fails after you make changes in the Setup menus, reboot the computer, enter

Setup again and load Setup defaults to correct the error.

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Memory

Message Description

Gate20 Error The BIOS is unable to properly control the mainboard’s Gate A20 function, which

controls access of memory over 1 MB. This may indicate a problem with the mainboard.

Multi-Bit ECC Error This message will only occur on systems using ECC enabled memory modules.

ECC memory has the ability to correct single-bit errors that may occur from faulty memory modules.

A multiple bit corruption of memory has occurred, and the ECC memory algorithm

cannot correct it. This may indicate a defective memory module. Parity Error Fatal Memory Parity Error. System halts after displaying this message. RAM R/W test failed This message is displayed by the AMIBIOS8 when the RAM read/write test fails. CMOS Memory Size

Wrong

The base memory (memory below 1MB) size that is reported in the CMOS (offset

15h) mismatches with the actual size detected. This condition may occur when the

hole is set at 512K base memory or when CMOS is corrupted.

Boot

Message Description

Boot Failure... This is a generic message indicating the BIOS could not boot from a particular

device. This message is usually followed by other information concerning the

device. Invalid Boot Diskette A diskette was found in the drive, but it is not configured as a bootable diskette. Drive Not Ready The BIOS was unable to access the drive because it indicated it was not ready for

data transfer. This is often reported by drives when no media is present. A: Drive Error The BIOS attempted to configure the A: drive during POST, but was unable to

properly configure the device. This may be due to a bad cable or faulty diskette

drive. B: Drive Error The BIOS attempted to configure the B: drive during POST, but was unable to

properly configure the device. This may be due to a bad cable or faulty diskette

drive. Insert BOOT diskette

in A:

Reboot and select proper boot device or Insert boot media in selected boot device

NO ROM BASIC This message occurs on some systems when no bootable device can be detected.

The BIOS attempted to boot from the A: drive, but could not find a proper boot

diskette.

Reboot and Select proper Boot device or Insert Boot Media in selected Boot device

BIOS could not find a bootable device in the system and/or removable media drive

does not contain media.

BIOS could not find a bootable device in the system and/or removable

media drive does not contain media.

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Storage Device

Message Description

Primary Master Hard Disk Error

Primary Slave Hard Disk Error

Secondary Master Hard Disk Error

Secondary Slave Hard Disk Error

3rd Master Hard Disk Error

3rd Slave Hard Disk Error

4th Master Hard Disk Error

4th Slave Hard Disk Error

5th Master Hard Disk Error

5th Slave Hard Disk Error

6th Master Hard Disk Error

6th Slave Hard Disk Error

Primary Master Drive

- ATAPI Incompatible

Primary Slave Drive ATAPI Incompatible

Secondary Master Drive - A TAPI Incompatible

Secondary Slave Drive - A TAPI Incompatible

3rd Master Drive ATAPI Incompatible

The IDE/A TAPI device configured as Primary Master could not be properly

initialized by the BIOS. This message is typically displayed when the BIOS is trying

to detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Primary Slave could not be properly initialized

by the BIOS. This message is typically displayed when the BIOS is trying to detect

and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Secondary Master could not be properly

initialized by the BIOS. This message is typically displayed when the BIOS is trying

to detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Secondary Slave could not be properly

initialized by the BIOS. This message is typically displayed when the BIOS is trying

to detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Master in the 3rd IDE controller could not be

properly initialized by the BIOS. This message is typically displayed when the BIOS

is trying to detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Slave in the 3rd IDE controller could not be

properly initialized by the BIOS. This message is typically displayed when the BIOS

is trying to detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Master in the 4th IDE controller could not be

properly initialized by the BIOS. This message is typically displayed when the BIOS

is trying to detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Slave in the 4th IDE controller could not be

properly initialized by the BIOS. This message is typically displayed when the BIOS

is trying to detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Master in the 5th IDE controller could not be

properly initialized by the BIOS. This message is typically displayed when the BIOS

is trying to detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Slave in the 5th IDE controller could not be

properly initialized by the BIOS. This message is typically displayed when the BIOS

is trying to detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Master in the 6th IDE controller could not be

properly initialized by the BIOS. This message is typically displayed when the BIOS

is trying to detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Slave in the 6th IDE controller could not be

properly initialized by the BIOS. This message is typically displayed when the BIOS

is trying to detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Primary Master failed an ATAPI compatibility

test. This message is typically displayed when the BIOS is trying to detect and

configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Primary Slave failed an ATAPI compatibility

test. This message is typically displayed when the BIOS is trying to detect and

configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Secondary Master failed an ATAPI

compatibility test. This message is typically displayed when the BIOS is trying to

detect and configure IDE/ATAPI devices in POST.

The IDE/ATAPI device configured as Secondary Slave failed an A TAPI compatibility

test. This message is typically displayed when the BIOS is trying to detect and

configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Master in the 3rd IDE controller failed an

ATAPI compatibility test. This message is typically displayed when the BIOS is

trying to detect and configure IDE/A TAPI devices in POST.

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Message Description

3rd Slave Drive ATAPI Incompatible

4th Master Drive ATAPI Incompatible

4th Slave Drive ATAPI Incompatible

5th Master Drive ATAPI Incompatible

5th Slave Drive ATAPI Incompatible

6th Master Drive ATAPI Incompatible

6th Slave Drive ATAPI Incompatible

S.M.A.R.T. Capable but Command Failed

S.M.A.R.T. Command Failed

S.M.A.R.T. Status BAD, Backup and Replace

S.M.A.R.T. Capable and Status BAD

The IDE/A TAPI device configured as Slave in the 3rd IDE controller failed an A TAPI

compatibility test. This message is typically displayed when the BIOS is trying to

detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Master in the 4th IDE controller failed an

ATAPI compatibility test. This message is typically displayed when the BIOS is

trying to detect and configure IDE/A TAPI devices in POST.

The IDE/A TAPI device configured as Slave in the 4th IDE controller failed an A TAPI

compatibility test. This message is typically displayed when the BIOS is trying to

detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Master in the 5th IDE controller failed an

ATAPI compatibility test. This message is typically displayed when the BIOS is

trying to detect and configure IDE/A TAPI devices in POST.

The IDE/A TAPI device configured as Slave in the 5th IDE controller failed an A TAPI

compatibility test. This message is typically displayed when the BIOS is trying to

detect and configure IDE/ATAPI devices in POST.

The IDE/A TAPI device configured as Master in the 6th IDE controller failed an

ATAPI compatibility test. This message is typically displayed when the BIOS is

trying to detect and configure IDE/A TAPI devices in POST.

The IDE/A TAPI device configured as Slave in the 6th IDE controller failed an A TAPI

compatibility test. This message is typically displayed when the BIOS is trying to

detect and configure IDE/ATAPI devices in POST.

The BIOS tried to send a S.M.A.R.T. message to a hard disk, but the command

transaction failed.

This message can be reported by an ATAPI device using the S.M.A.R.T. error

reporting standard. S.M.A.R.T. failure messages may indicate the need to replace

the hard disk.

The BIOS tried to send a S.M.A.R.T. message to a hard disk, but the command

transaction failed.

This message can be reported by an ATAPI device using the S.M.A.R.T. error

reporting standard. S.M.A.R.T. failure messages may indicate the need to replace

the hard disk.

A S.M.A.R.T. capable hard disk sends this message when it detects an imminent

failure.This message can be reported by an ATAPI device using the S.M.A.R.T.

error reporting standard. S.M.A.R.T. failure messages may indicate the need to

replace the hard disk.

A S.M.A.R.T. capable hard disk sends this message when it detects an imminent

failure.

This message can be reported by an ATAPI device using the S.M.A.R.T. error

reporting standard. S.M.A.R.T. failure messages may indicate the need to replace

the hard disk.

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Virus-related

Message Description

BootSector Write!! The BIOS has detected software attempting to write to a drive’s boot sector. This is

flagged as possible virus activity. This message will only be displayed if Virus

Detection is enabled in AMIBIOS setup. VIRUS: Continue

(Y/N)?

If the BIOS detects possible virus activity, it will prompt the user. This message will

only be displayed if Virus Detection is enabled in AMIBIOS setup.

System Configuration

Message Description

DMA-1 Error Error initializing primary DMA controller. This is a fatal error, often indication a

problem with system hardware. DMA-2 Error Error initializing secondary DMA controller. This is a fatal error, often indication a

problem with system hardware. DMA Controller Error POST error while trying to initialize the DMA controller. This is a fatal error, often

indication a problem with system hardware. Checking NVRAM...

Update Failed

Microcode Error BIOS could not find or load the CPU Microcode Update to the CPU. This message

NVRAM Checksum Bad, NVRAM Cleared

Resource Conflict More than one system device is trying to use the same non-shareable resources

NVRAM Ignored The NVRAM data used to store Plug’n’Play (PnP) data was not used for system

NVRAM Bad The NVRAM data used to store Plug’n’Play (PnP) data was not used for system

Static Resource Conflict

PCI I/O conflict A PCI adapter generated an I/O resource conflict when configured by BIOS POST. PCI ROM conflict A PCI adapter generated an I/O resource conflict when configured by BIOS POST. PCI IRQ conflict A PCI adapter generated an I/O resource conflict when configured by BIOS POST. PCI IRQ routing table

error

Timer Error Indicates an error while programming the count register of channel 2 of the 8254

Refresh timer test failed

Interrupt Controller-1 error

Interrupt Controller-2 error

BIOS could not write to the NVRAM block. This message appears when the FLASH

part is write-protected or if there is no FLASH part (System uses a PROM or

EPROM).

only applies to INTEL CPUs. The message is most likely to appear when a brand

new CPU is installed in a mainboard with an outdated BIOS. In this case, the BIOS

must be updated to include the Microcode Update for the new CPU.

There was an error in while validating the NVRAM data. This causes POST to clear

the NVRAM data.

(Memory or I/O).

configuration in POST.

configuration in POST due to a data error.

Two or more Static Devices are trying to use the same resource space (usually

Memory or I/O).

BIOS POST (DIM code) found a PCI device in the system but was unable to figure

out how to route an IRQ to the device. Usually this error is causing by an

incomplete description of the PCI Interrupt Routing of the system.

timer. This may indicate a problem with system hardware.

BIOS POST found that the refresh timer hardware failed to pass the Refresh

Retrace Test.

BIOS POST could not initialize the Master Interrupt Controller. This may indicate a

problem with system hardware.

BIOS POST could not initialize the Slave Interrupt Controller. This may indicate a

problem with system hardware.

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CMOS

Message Displayed Description

CMOS Date/Time Not Set

CMOS Battery Low CMOS battery is low. This message usually indicates that the CMOS battery needs

CMOS Settings Wrong

CMOS Checksum Bad

The CMOS date and/or time are invalid. This error can be resolved by readjusting

the system time in AMIBIOS Setup.

to be replaced. It could also appear when the user intentionally discharges the

CMOS battery .

CMOS settings are invalid. This error can be resolved by using AMIBIOS Setup.

CMOS contents failed the Checksum check. Indicates that the CMOS data has

been changed by a program other than the BIOS or that the CMOS is not retaining

its data due to malfunction. This error can typically be resolved by using AMIBIOS

Setup.

Miscellaneous

Message Displayed Description

KBC BAT Test failed Keyboard controller BAT test failed. This may indicate a problem with keyboard

controller initialization. Keyboard Error Keyboard is not present or the hardware is not responding when the keyboard

controller is initialized. PS/2 Keyboard not

found PS/2 Mouse not

found Keyboard/Interface

Error Unlock Keyboard PS/2 keyboard is locked. User needs to unlock the keyboard to continue the BIOS

System Halted The system has been halted. A reset or power cycle is required to reboot the

<INS> Pressed Indicates that <INS> key is pressed during the BIOS POST . The POST will load and

Password check failed

Unknown BIOS error. Error code = 004Ah

Unknown BIOS error. Error code = 004Bh

Floppy Controller Failure

PS/2 keyboard support is enabled in the BIOS setup but the device is not detected.

PS/2 mouse support is enabled in the BIOS setup but the device is not detected.

Keyboard controller failure. This may indicate a problem with system hardware.

POST.

machine. This message appears after a fatal error has been detected.

use default CMOS settings.

The password entered does not match the password set in the setup. This condition

may occur for both Supervisor and User password verification.

This message is displayed when ADM module is not present in the AMIBIOS8

ROM.

This message is displayed when language module is not present in the AMIBIOS8

ROM.

Error in initializing legacy Floppy Controller.

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Index of Symptom-to-FRU Error Messages

To use the information in this section to diagnose a problem:

1. Find the error symptom in the left column.

2. If directed to a check procedure, replace the FRU indicated in the check procedure.

If no check procedure is indicated, the first Action/FRU item listed in the right column is the most likely cause.

NOTE If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined

Problems” on page 65.

Processor/Processor Fan-related Symptoms

Symptom/Error Action/FRU

Processor fan does not run but power supply fan runs.

Processor test failed. • Processor

NOTE Normally , the processor fan should be operative, and the processor clock setting should be exactly

set to match its speed requirement before diagnosing any processor problems.

• Ensure the system is not in power saving mode.

• With the system powered on, measure the voltage of the processor fan connector. Its reading should be +12Vdc. If the reading shows normal, but the fan still does not work, then replace the heat sink fan.

• Mainboard

Mainboard and Memory-related Symptoms

Symptom/Error Action/FRU

Memory test failed. • Memory module

• Mainboard

Incorrect memory size shown or repeated during POST.

System works but fails to enter power saving mode when the Power Management Mode is set to Enabled.

Blinking cursor only; system does not work. • IDE drive connection/cables

NOTE Ensure the memory modules are installed properly and the contact leads are clean before

diagnosing any system problems.

• Insert the memory modules in the DIMM sockets properly, then reboot the system.

• Memory module

• Mainboard

• Enter CMOS Setup and load the default settings. In Windows systems, check settings in Power Management Property of the Control Panel.

• Reload software from Recovery CD.

• IDE disk drives

• See “Undetermined Problems”.

• Mainboard

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Hard Disk Drive-related Symptoms

Symptom/Error Action/FRU

Hard disk drive test failed. • Enter CMOS Setup and load the default settings.

• Hard disk drive cable

• Hard disk drive

• Mainboard

Hard disk drive cannot format completely. • Enter CMOS Setup and load the default settings.

• Hard disk drive cable

• Hard disk drive

• Mainboard

Hard disk drive has write error. • Enter CMOS Setup and load the default settings.

• Hard disk drive

Hard disk drive LED fails to light, but system operates normally.

NOTE Make sure the hard disk drive is configured correctly in CMOS Setup and that cable/jumper are set

correctly before diagnosing any hard disk drive problems. (If only one drive is installed, please make sure the drive is connected to master connector or the drive is set to master.)

Optical Disc Drive-related Symptoms

• With the system power on, measure the voltage of the HDD LED connector.

• HDD LED cable

Symptom/Error Action/FRU

CD/DVD-ROM drive LED doesn't come on but works normally .

CD/DVD-ROM drive LED flashes for more than 30 seconds before LED shutting off.

Software asks to reinstall disc. Software displays a reading CD/DVD error.

CD/DVD-ROM drive cannot load or eject when the system is turned on and its eject button is pressed and held.

CD/DVD-ROM drive does not read and there are no messages are displayed.

CD/DVD-ROM drive can play audio CD but no sound output.

• Enter CMOS Setup and load the default settings.

•DIMM

• Mainboard

• CD/DVD-ROM may have dirt or foreign material on it. Check with a known good disc.

• CD/DVD-ROM is not inserted properly.

• CD/DVD-ROM is damaged.

• Disconnect all cables from CD/DVD-ROM drive except power cable, then press the eject button to try to unload the disc.

• CD/DVD-ROM drive power cable

• CD/DVD-ROM drive

• CD may have dirt or foreign material on it. Check with a known good disc.

• Ensure the CD/DVD-ROM driver is installed properly.

• CD/DVD-ROM drive.

• Ensure the headphone jack of the CD/DVD-ROM has an output.

• Turn up the sound volume.

• Speaker power/connection/cable.

• CD/DVD-ROM drive.

NOTE Make sure the optical disc drive is configured correctly in CMOS Setup, the cable/jumper are set

correctly and the drive’s optical lens is clean before diagnosing any optical drive problems.

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Real-Time Clock-related Symptoms

Symptom/Error Action/FRU

Real-time clock is inaccurate. • Ensure the information in the Standard CMOS Feature of

BIOS Setup is set correctly .

• RTC battery

• Mainboard

Audio-related Symptoms

Symptom/Error Action/FRU

Audio software program invoked but no sound comes from speakers.

Modem-related Symptoms

Symptom/Error Action/FRU

Modem ring cannot wake up system from suspend mode.

Data/fax modem software program invoked but cannot receive/send data/fax

Fax/voice modem software program invoked but has no sound output. (Data files are received normally; voice from modem cannot be produced, but system sound feature works normally.)

• Speaker power/connection/cable

• For an external modem, make sure Power on By Ring in BIOS Setup or Power Management is set to Enabled. For the PCI modem, make sure Wake up by PCI card is set to Enabled.

• If a PCI modem card is used, reinsert the modem card to the PCI slot firmly or replace the modem card.

• In Win 98, ensure the telephone application is configured correctly for your modem and set to receive messages and/or fax.

• Ensure the modem card is installed properly.

• Ensure the modem voice-in cable from modem adapter card is connected to the mainboard

Video and Monitor-related Symptoms

Symptom/Error Action/FRU

Video memory test failed.Video adapter failed.

Display problem

• Incorrect colors

• No high intensity

• Missing, broken, or incorrect characters

• Blank monitor (dark)

• Blank monitor (bright)

• Distorted image

• Unreadable monitor Display changing colors. • Monitor signal connection/cable

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

• Remove all non-factory-installed cards.

• Load default settings (if screen is readable).

• Mainboard

• Monitor signal connection/cable

•Monitor

• Video adapter card

• Mainboard

• Video adapter card

• Mainboard

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Printer-related Symptoms

Symptom/Error Action/FRU

Printing failed. • Ensure the printer driver is properly installed. Refer to the

printer service manual.

•Printer

• Printer cable

• Mainboard.

Printer problems. • Refer to the service manual for the printer.

Keyboard-related Symptoms

Symptom/Error Action/FRU

Some or all keys on keyboard do not work. • Keyboard

Power Supply-related Symptoms

Symptom/Error Action/FRU

Pressing the power button does not turn off the system. (Only unplugging the power cord from electrical outlet can turn off the system.)

Pressing the power button does not turn on the system

Executing software shutdown from Windows98 Start menu does not turn of f the system. (Only pressing power button can turn off the system).

No system power, or power supply fan is not running.

• Ensure the Soft-off by PWR-BTTN in CMOS Setup (under Power Management) is not set to Instant-off.

• Power switch cable assembly

• Power switch cable assembly.

• Enter CMOS Setup and load the default settings.

• Reload software from Recovery CD.

• Power supply

• Mainboard

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Beep Codes

When no error message is displayed but the computer stops during POST, listen for beep codes.

Beep Status Possible Causes

One short beep. System ready System is OK. Continuous one

long beep

One long beep, then two short beeps and repeat

One long beep, then one short beep

Two short beeps. CMOS failure CMOS checksum error

Undetermined Problems

NOTE • Verify that all attached devices are supported by the computer.

• Verify that the power supply being used at the time of the failure is operating correctly. (See “Power System Check” on page 67)

Memory not installed or memory error

VGA not installed or VGA error

BIOS failure BIOS damaged. Processor jump to boot block to execute

• Something is wrong with the memory installed

• There is problem accessing the memory (i.e., mainboard problem)

• The mainboard can not access the video card for some reasons. Either the video card is not working, its memory is not accessible, or its BIOS may be corrupt.

• Something is wrong with the mainboard.

the default procedure.

Follow the procedures below to isolate the failing FRU. Do not isolate non-defective FRU.

1. Power off the computer.

2. Visually check them for damage. If any problems are found, replace the FRU.

3. Remove or disconnect all of the following devices:

• Non-Acer devices

• Printer, mouse, and other external devices

• Hard disk drive

• DIMM

• CD/DVD-ROM drive

• Expansion boards

4. Power on the computer.

5. Determine if the problem has been resolved.

6. If the problem does not recur, reconnect the removed devices one at a time until you find the failed FRU.

If the problem persists, replace the mainboard, and then LCD assembly (one at a time). Do not replace a non-defective FRU.

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BIOS Recovery

When you boot up the computer and you hear one long beep, followed by a shorter one, the system BIOS is damaged. This maybe cause by an interruption during a BIOS flash procedure (e.g. a power outage) or a corrupted BIOS code, which will cause the system to go into an unbootable state.You need to access and execute the boot block program to reboot the computer and recover the regular BIOS code.

Note the following when restoring the BIOS settings:

• Make sure the computer is connected to a UPS unit during the BIOS recovery process.

• The BIOS crisis recovery disk should be prepared in a computer running the Windows XP or Windows Vista OS.

Creating the BIOS Crisis Recovery Disk

1. Prepare a removable USB storage device with a capacity size greater than 10 MB. Note that all data on the USB storage device will be cleared during the creation of the crisis disk.

2. Set up a computer running the Windows XP or Windows Vista operating system and plug in the USB storage device into an available USB port.

3. Copy the target BIOS ROM file to the USB storage device and rename it as “amiboot.rom”.

4. Unplug the USB storage device.

5. Eject the removable USB storage device from the computer.

Performing a BIOS Recovery

1. Shut down the BIOS failed-computer.

2. Connect the USB storage device containing the “amiboot.rom” file to the failed computer.

3. Press the power button to turn on the computer.

The system will now execute the BIOS recovery process. When the process is complete, four short beeps will be emitted and the computer will automatically reboot.

4. Disconnect the USB storage device from the computer.

5. Press Delete to run the CMOS Setup Utility.

6. Press F9 to load the system default settings.

7. Select Ok, then press Enter.

8. Press F9 to save the default settings and close the Setup utility.

9. Select Ok, then press Enter.

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Clearing CMOS

You may need to clear the Setup configuration values (CMOS) if the configuration has been corrupted, or if incorrect settings made in the Setup Utility caused error messages to be unreadable. This procedure will clear the BIOS supervisor password as well.

Use the CLR_CMOS jumper to clear the CMOS data.

• 1-2 position: Normal operation (default)

• 2-3 position: Clear CMOS data

To clear the CMOS data:

1. Turn off the power to the computer and all peripherals.

2. Unplug the power cord from the computer.

3. Unplug the network cable and all connected peripheral devices from the computer.

4. Place the computer on a flat, steady surface with the rear cover facing upward.

5. Remove the computer stand, rear cover, and the I/O cable plate by following the procedures described on

pages 28–31.

6. Remove the wall mount plate by following the procedure described on page 40.

7. Remove the graphics card and HDD assemblies by following the procedures described on pages 43–45.

8. If necessary, remove any other assemblies or cables that prevent access to the CMOS clear jumper.

9. Locate the CLR_CMOS jumper on the mainboard.

10. Remove the jumper block and set it over the 2-3 pins for 20 to 30 seconds.

11. Return the jumper block to its default 1-2 position.

12. Reinstall the graphics card and HDD assemblies.

13. Reinstall any any other assemblies or cables that have previously been removed.

14. Reinstall the wall mount plate, I/O cable plate, rear cover, and the computer stand.

15. Connect the power cord to the system.

16. Press the power button to turn on the computer.

17. During POST, press Delete to access the Setup Utility.

18. Press F9 to load the system default values.

19. Press F10 to save the changes you made and close the Setup Utility.

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System Block Diagram

Chapter 5

System Architecture

This chapter shows the block diagram and board layout of the Aspire Z3750 / Z3751 / Z5750 / Z5751 computer.

Block Diagram

The core subsystems of the Aspire Z3750 / Z3751 / Z5750 / Z5751 computer are depicted in the following block diagram.

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Mainboard Layout

This section shows the major mainboard components.

Item Code Component

1 FRONT_PANEL1 Front panel cable connector 2 CLR_CMOS Clear CMOS jumper 3 PCI-E1-X16 PCI Express x16 expansion slot (reserved for graphics card installation) 4 PCI-E1-1X2 PCI Express x1 expansion slot (reserved for TV tuner card installation) 5 SPEAKER1 Internal speaker cable connector 6 F_AUDIO Side I/O board cable connector 7 AUDIO Left panel audio jacks (line-in, line-out, and microphone jacks) 8 NIC_USB Left: Ethernet port

9 USB USB ports 10 VGA Monitor port 11 HDMI HDMI port 12 KB/MS Left: PS/2 mouse port

13 PWR2 4-pin ATX power connector 14 HU1 Processor socket

Right: USB ports

Right: PS/2 keyboard port

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Item Code Component

15 BAT1 RTC battery 16 CPU_FAN Heat sink fan cable connector 17 DIMM4 DDR3 slot 4 18 DIMM2 DDR3 slot 2 19 DIMM3 DDR3 slot 3 20 DIMM1 DDR3 slot 1 21 PWR1 24-pin ATX power connector 22 BUZ1 Internal buzzer 23 F_USB4 Card reader function connector 24 F_USB2 Card reader function connector 25 F_USB3 Front panel USB cable connector 26 F_USB1 Card reader function connector 27 ??? AMI BIOS chip 28 SATA1 HDD SATA cable connector 29 SATA2 ODD SATA cable connector 30 ??? Intel H57 Express Chipset

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Chapter 6

Field Replaceable Unit (FRU) List

This chapter gives you the FRU (Field Replaceable Unit) listing of the Aspire Z3750 / Z3751 / Z5750 / Z5751 computer global configurations. Refer to this list when ordering for repair parts or for RMA (Return Merchandise Authorization).

IMPORTANT Part number changes will not be noted in this printed Service Guide. The part numbers listed

in this Service Guide may differ from those given to regional AUTHORIZED SERVICE PROVIDERS. You MUST use the local FRU list provided by your regional office to order FRU parts for repair and service of customer machines. Make sure that you are using the most up-to-date information available on your regional web site or channel when ordering FRU parts.

NOTE Follow the local government regulations, or the rules set by your regional office on how to return or

dispose of defective parts.

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Exploded Diagram

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FRU List

System Model: ACER_AZ5751_AGALLAGHER (NO: 91.3CN01.001G)

Category Part Name Part Number

Boards

Mainboard

MAINBOARD AZ3750/AGALLAGHER INTEL H57 LF INTEL H57/LGA1156/DDR3 UDIMM GBE HDCODEC ROHS&EUP

Scaler board

SCALER BOARD 55.SEW01.003

USB/audio board

FRONT BOARD 55.U5R01.003

Inverter board

INVERTER BOARD 23" 4L SUMIDA IV30260SPEC139 19.U5R01.002 INVERTER BOARD 23" 4L DARFON VZ.13156.B01 19.U5R01.001

Capacitive LED board

CAPACITIVE BUTTON BOARD NS-AGALLAGHER-CY 55.SEW01.002 CAPACITIVE BUTTON BOARD ST-TKSTWIRICH01 55.SEW01.001

Light bars

LIGHT BAR BOARD BLUE 55.SEW01.004

MB.SEX09.001

Touchscreen control board

Graphics card

(for Aspire Z3751and Z5751 models only)

TOUCH CONTROL BOARD IDEACOM MUTI- IDC1650-1 14U0 RESISTIVE FOR 23

NV G315 512MB (64BIT) DDR3 DVI HDMI VGA ATX BRACKET ROHS

VGA CARD 81D685-469016 NV G315 512MB (64BIT) DDR3 DVI HDMI VGA ATX BRACKET ROHS (SAMSUNG)

288-1N141-201AC NV 315 512MB 64BITS SDDR3 DVI+HDMI+VGA ATX (NEW HYNIX -1.2)

VGA CARD PCPARTNER NV 315 512MB 64BITS SDDR3 DVI+HDMI LP NEW HYNIX-1.2

NV 315 512MB SDDR3 DVI+HDMI+VGA ATX (SAMSUNG) VG.PCPT3.151 VGA CARD PCPARTNER 288-30N58-010AC NVIDIA GT330

2GB SDDR2 DVI+HDMI LP VGA CARD 288-30N58-110AC NV GT330 2GB DDR2

DVI+HDMI+VGA ATX (HYNIX) VGA CARD AMD RADEON HD5450 512MB (64BIT) DDR3

DVI HDMI VGA ATX BRACKET ROHS

PA.14800.002

VG.ECS31.501

VG.ECS31.502

VG.PCPT3.162

VG.PCPT3.164

VG.PCPT3.301

VG.PCPT3.302

VG.ECS54.501

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

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

Specifications and Main Features

Frequently Asked Questions

User Manual