Instruction/ maintenance manual of the product X5400 Acer
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Acer Aspire X3400/X5400 Service Guide PRINTED IN T AIW AN.
ii Revision History Please refer to the table below for the updates ma de on this service guide. Date Chapter Up dates.
iii Copyright Copyright © 2010 by Acer Incorporated. All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any.
iv Disclaimer The information in this guide is subject to ch ange without notice. Acer Incorporated makes no representations or warranties, either e xpressed or implied, with respect to the contents hereof and specifically disclaims any warrantie s of merchantability or fitness for any particular purpose.
v Conventions The following conventi ons are used in this manual: SCREEN MESSAGES Denotes actual messages that appear on screen. NOTE Gives additional informati on related to the current topic. W ARNING Alerts you to any physical risk or system damage that might result from doing or not doing specific actions.
vi Service Guide Coverage This Service Guide provides you with all technica l information relating to the BASIC CONFIGURA TION decided for Acer's "glo bal" product offering.
vii System Tour 1 Features 1 System Compon ents 4 Front Panel 4 Rear Panel 6 Internal Components 8 System LED Indicat ors 9 System Utilities 11 CMOS Setup Utility 11 Entering CMOS setup 12 Navigating .
viii CMOS 64 Miscellaneous 64 USB eModule Error Messages 65 SMBIOS eModule Error Messages 65 CPU eModule Error Messages 65 MPS Table (Multi-proce ssor) eModule Error Message s 65 BIOS Recovery 66 Unde.
Chapter 1 1 Features Below is a brief summary of the computer ’s many features. NOTE: The features listed in this section is for your reference only .
2 Chapter 1 I/O ports Front Five USB 2.0 ports Headphone/speaker-out/line-out jack Microphone-in jack 9-in-1 media card reader — CompactFlash® (T ype I an d II), CF+™ Microdri.
Chapter 1 3 Weight (estimate) X3950: 8 kg X5950: 8 kg.
4 Chapter 1 System Components This section is a virtual tour of the sy stem’s interior and exterior components. Front Panel X3400 No. Icon Compon ent 1 USB 2.
Chapter 1 5 X5400 No. Icon Component 1 USB 2.0 ports 2 3 Front I/O cover 4 Microphone-in jack 5 Head phone/S peaker-out/line-out jack 6 CF I/II (Comp actFlash T ype I/II) slot 7 Media card reader 8 Drive bay door eject button Press to open dri ve bay door and a ccess the optical drive.
6 Chapter 1 Rear Panel X3400 No. Icon Component 1 Audio in or side speaker jack 2 Center speaker/subwoo fer jack 3 Gigabit LAN port (10/100/1000 Mbps) 4 USB 2.
Chapter 1 7 X5400 No. Icon Component 1 Audio in or side speaker jack 2 Center speaker/subwoo fer jack 3 Gigabit LAN port (10/100/1000 Mbps) 4 USB 2.0 po rts 5 Key hole 6 Lock slot 7 Power connector 8 .
8 Chapter 1 Internal Components No. Compon ent 1 Optical drive 2 Memory 3 Expansion card 4 Mainboard 5 Heatsink fan assembly 6 Power supply.
Chapter 1 9 System LED Indicators This section describ es the different system LED indicators. LED indicator Color LED status Description Power Blue On S0/S1 state Blue Blinking S3 state — Off S4/S5.
10 Chapter 1.
Chapter 2 11 CMOS Setup Utility CMOS setup is a hardware configurat ion program built into the system ROM, called the complementary meta l- oxide semiconductor (CMOS) Setup Utility . Since mo st systems are already properly configured and optimized, there is no need to run this util ity .
12 Chapter 2 Entering CMOS setup 1. T urn on the computer and the monitor . If the computer is already turned on, close all open applicatio ns, 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 .
Chapter 2 13 Setup Utility Menus The Setup Main menu includes the following main setup categories. Product Information S tandard CMOS Features Advanced BIOS Features Advanced Chipset F.
14 Chapter 2 Product Information The Product Information menu disp lays basic information about the syst em. These entries are for your reference only and are not user-configurable. Parameter Description Processor T ype T ype of processor installed on the system.
Chapter 2 15 Standard CMOS Features Parameter Description Option System Date Set the date following the weekday-month-day-year format. System T ime Set the system time following the hour-minute-secon d format. AHCI Port 1/2/3/4 Displays the status of auto detection of the AHCI device.
16 Chapter 2 Advanced BIOS Features Parameter Description Option Quick Boot Allows you to decrease the time it takes to boot the computer by shortening or skipping certain standard booting process. Enabled Disabled Quiet Boot When enabled, the BIOS splash screen displays during startup.
Chapter 2 17 Advanced Chipset Features Parameter Description Option AMD Cool’n’Quiet Enables or disables the generation of ACPI_PPC, PPS, and PCT objects. Enable d Disabled AMD-V Enables or disables the AMD Virtual ization T echnology (VT) availability .
18 Chapter 2 Integrated Peripherals Parameter Description Option Onboard SA T A Controller Enables or disables the onboard SA T A controller. Enabled Disabled Onboard SA T A Mode Select an operating mode for the onboard SA T A. AHCI Native IDE Onboard USB Controller Enables or di sables the onboard USB controller .
Chapter 2 19 Power Management Setup Parameter Description Option ACPI Aware O/S Enables or disables the Advanced Configuration and Power Management (ACPI) function. Ye s Disabled ACPI Suspend Mode Select an ACPI state. S3 (STR) S1 (POS) Power On by RTC Alarm Enables or disables real time clock (RTC) to generate a wake event.
20 Chapter 2 PC Health Status Parameter Description Option Smart Fan Enables or disables the sm art system fan control function. Enabled Disabled CPU T emperature System T emperature CPU Fan Speed System Fan Speed CPU Core +1.
Chapter 2 21 Frequency/Voltage Control Parameter Description Option S pread S pectru m Enables or disables the reduction of the mainboard’s EMI. Note: Remember to disable the S pread S pectrum feature if you are overclocking. A slight jitter can introduce a temporary boost in clock speed causing the overclock ed processor to lock up.
22 Chapter 2 BIOS Security Features Setting a syste m passw ord 1. Use the up/down arrow keys to select a password parameter (Change Supervisor Password or Change User Password) menu then press Enter . A password box will appear . 2. T ype a password then press Enter .
Chapter 2 23 Removing a system password 1. Use the up/down arrow keys to select password parameter (Change Supervisor Password or Change User Password) menu then press Enter . 2. Enter the current p assword then press Enter . 3. Press Enter twice without entering anythin g in the password fields.
24 Chapter 2 Load Default Settings The Load Default Settings menu allo ws you to load the default settings for all BIOS setup parameters. Setup defaults are quite demanding in terms of resources cons umption.
Chapter 2 25 Save & Exit Setup The Save & Exit Setup menu all ows you to save change s made and close the Setup Utility . CMOS Setup Utility - Copyright (C) 1985-2005, American Megatrends, Inc.
26 Chapter 2 Exit Without Saving The Exit Without Saving menu allows you to discard changes made and close the Setup Utility . CMOS Setup Utility - Copyright (C) 1985-2005, American Megatrends, Inc.
Chapter 3 27 This chapter contains step-by-step procedure s on how to disassemble the desktop computer for maintena nce and troubleshooting. Disassembly Requirements T o disassembl e the computer , yo.
28 Chapter 3 Pre-disassembly Procedure Before proceeding with the disassembly procedure, perform the steps listed below: 1. T urn off the system and all the peripherals connected to it. 2. Unplug the power cord from the power ou tlets. 3. Unplug the power cord from the system.
Chapter 3 29 Main Unit Disassembly X3400 MAIN UNIT FRONT BEZEL MAIN UNIT DISASSEMBL Y SIDE P ANEL PROCESSOR Ax2 HEA TSINK F AN ASSEMBL Y POWER SUPPL Y MEMORY MODULES PCI CARD FRONT I/O AND CARD READER.
30 Chapter 3 X5400 Screw List Code Screw Part No. A #6-32 L5 BZN 86.00J07.B60 B M3xL5 BZN 86.1A324.5R0 C #6-32*3/16 NI 86.5A5B6.012 D #6-32 L6 NI 86.00J44.
Chapter 3 31 Removing the Side Panel 1. Perform the pre-disassembly pr ocedure descri bed on page 28. 2. Remove the two screws (A) located on the rear edge of the side panel. 3. Slide the side panel toward the back of the chassis until the tabs on the cover disengage with the sl ots on the chassis.
32 Chapter 3 Removing the Front Bezel 1. Remove the side panel. Refer to the previous section for instructions. 2. Remove the front bezel according to machine model.
Chapter 3 33 (3). Disconnect the LED cable from the mainboard, then insert the cable into the hole on the housing and remove the bezel. X3400.
34 Chapter 3 Removing the Heatsink Fan Assembly W ARNING: The heatsink becomes very hot when the system is on. NEVER touch the he atsink with any met al or with your hands. 1. See “Removing the Side Panel” on page 31. 2. Use a long-nosed screwdriver to loosen t he four scre ws on the heatsink fan assembly .
Chapter 3 35 Removing the Processor IMPORT AN T : Be fore removing a processor from the mainboard, make sure to create a backup file of all import ant dat a. W ARNING: The processor becomes very hot when the system is on. Allow it to cool off first before handling.
36 Chapter 3 Removing the Optical Drive 1. See “Removing the Side Panel” on page 31. 2. See “Removing the Front Bezel” on page 32. 3. Remove the HDD-ODD bracket. (1). Disconnect the data and power cab les from their opti cal drive connectors. (2).
Chapter 3 37 (3). Lift the HDD-ODD bracket, then disconnect the data and power cables from their HDD connectors. 4. Remove the two screws (B) that secure the optical drive. 5. Slide the optical drive out of the bracket. Screw (Quantity) Color To r q u e Part No.
38 Chapter 3 Removing the Hard Disk Drive 1. See “Removing the Side Panel” on page 31. 2. See “Removing the Front Bezel” on page 32. 3. See “Remove the HDD-ODD bracket.” on page 36. (1). Place the bracket on a clean, static-free work surface.
Chapter 3 39 Removing the Power Supply 1. See “Removing the Side Panel” on page 31. 2. See “Removing the Heatsink Fan Assembly” on page 34. 3. See “Removing the Processor” on page 35. 4. See “Remove the HDD-ODD bracket.” on page 36. 5.
40 Chapter 3 7. Remove the three screws (A) that secure the power supply modul e. 8. Lift the power supply module off the unit. Screw (Quantity) Color To r q u e Part No.
Chapter 3 41 Removing the Memory Modules IMPORT AN T : Before removing any DIMM, make sure to cr eate a backup file of all important data. 1. See “Removing the Side Panel” on page 31. 2. See “Removing the Front Bezel” on page 32. 3. See “Remove the HDD-ODD bracket.
42 Chapter 3 Removing an Expansion Card This section includes instructions on how to remove a TV tuner card and a VGA ca rd. To remove th e network card: 1. See “Removing the Side Panel” on page 31. 2. Remove the screw (A) that secu res the card to the chassis.
Chapter 3 43 To remove th e VGA card: 1. See “Removing the Side Panel” on page 31. 2. Remove the screw (A) that secu res the card to the chassis. 3. Pull the card out of its mainboard connector . Screw (Quantity) Color To r q u e Part No. #6-32 L5 BZN (3) Black 5.
44 Chapter 3 Removing the Front I/O and Card Reader Boards 1. See “Removing the Side Panel” on page 31. 2. See “Removing the Front Bezel” on page 32. 3. See “Remove the HDD-ODD bracket.” on page 36. 4. Open the cable retention clips and disconnect the data cables from their mainboard connectors.
Chapter 3 45 (1). Remove the screw (D) that secure s the bracket to the chassis. (2). Remove the bracket. 7. Remove the card reader board. (1). Remove the two screws (D) that secure the card reader board to the bracket. Screw (Quantity) Color To r q u e Part No.
46 Chapter 3 (2). Pull the card reader board out of the bracket. 8. Remove the front I/O board. (1). Remove the two screws (D) that secu re the I/O board to the bracket. (2). Pull the I/O board out of the bracket. NOTE: The card has been highlig hted with a yellow rectangle as above image shows.
Chapter 3 47 Removing the Mainboard 1. See “Removing the Side Panel” on page 31. 2. See “Removing the Front Bezel” on page 32. 3. See “Removing the Heatsink Fan Assembly” on page 34. 4. See “Removing the Processor” on page 35. 5. See “Remove the HDD-ODD bracket.
48 Chapter 3 11 . Remove the six screws (D) that secure the mainboard. 12. Lift the board off the housing. Screw (Quantity) Color To r q u e Part No. #6-32 L6 NI (6) Silver 5.7 to 6.3 kgf-cm 86.00J44.C60 NOTE: The mainboard has been highlighted with a yellow rectangle as above image shows.
Chapter 3 49 Removing the Top Bezel NOTE: The following instruction is appl icable only to the X5400 model. 1. See “Removing the Side Panel” on page 31. 2. See “Removing the Front Bezel” on page 32. 3. Slide the bezel toward the front, then lift the bezel of f the hous ing.
50 Chapter 3.
Chapter 4 51 This chapter provides instructions on how to troubleshoot system hardw are problems. Hardware Diagnostic Procedure IMPORT AN T : T he diagnostic tests described in this chapter ar e only intended to test Acer p roducts. Non-Acer products, prototype cards, or modified opti ons can give false errors and inval id system responses.
52 Chapter 4 System Check Procedures Power System Check If the system will power on, skip this sect ion. Refer to System External In spection. If the system will not power on, do the fol lowing: Check if the power cable is properly connected to the system and AC source.
Chapter 4 53 Checkpoints A checkpoint is either a byte or word value output to I/O port 80h. The BIOS outputs checkpoint s throughout bootblock and Power-On Self T e st (POST) to indicate t he task the system is currently executing.
54 Chapter 4 Bootblock Recover y Code Checkpoints The Bootblock recovery code gets control when the BIOS determines that a BIOS recovery needs to occur because the user has forced the upda te or the BIOS checksum is corrupt . The following t able describes the type of checkpoints that may occur during th e Bootblock recovery portion of the BIOS.
Chapter 4 55 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 th at may occur during the PO ST portion of the BIOS. NOTE: Please note that checkpoi nts may dif f er between different plat forms based on system configuration.
56 Chapter 4 3A Ini tialize RTC date/time. 3B T est for total memory installed in the system. Also, Check for DEL or ESC keys to limit memory test. Display to tal memory in the system. 3C Mid POST in itialization of ch ipset registers. 40 Detect different devices (Parallel ports, serial ports, and coprocessor in CPU, .
Chapter 4 57 DIM Code Checkpoints The Device Initialization Manager (DIM) gets control at va rious times during BIOS POST to initialize di ffere nt system busses. The following table describes the ma in checkpoints where the DIM module is accessed. NOTE: Checkpoints may dif fer between different plat forms based on system configur ation.
58 Chapter 4 Beep Codes Beep codes are used by the BIOS to indicate a seriou s or fatal error to the end user . Beep codes are used when an error occurs before the system video ha s b een initialized. Beep c odes will be generated by the system board speaker , commonly referred to as the PC speaker .
Chapter 4 59 T roubleshooting POST BIOS Beep Codes Number of Beeps Description 1,3 Reseat the memory , or replace with known good modules. 6,7 Fatal error indicating a serious probl em with the system.
60 Chapter 4 Error Messages The following tables describes the error messages that may appear during POST . Each message is listed with a detailed description of the error . Memory Boot Message Displayed Description Gate20 Error The BIOS is unable to properly control the motherboard ’s Gate A20 function, which controls access of memory over 1 MB.
Chapter 4 61 Storage Device Message Displayed Description Primary Master Hard Disk Error The IDE/A T API device c onfigured a s Primary Master could not be properly initialized by the BIOS. This message is ty pically displayed when the BIOS is trying to detect and configure IDE/A T API devices in POST .
62 Chapter 4 Virus Related 3rd Slave Drive - A T API Incompatible The IDE/A T API device configu red as Slave in the 3rd IDE controller failed an A T API compatibility test. This mess age is typically displayed when the BIOS is trying to detect and configure IDE/A T API devices in POST .
Chapter 4 63 System Configuration Message Displayed Description DMA-1 Error Error initializing primary DMA controller . This is a fatal error , often indication a problem with syst em hardware. DMA-2 Error Error initializing secondary DMA control l er .
64 Chapter 4 CMOS Miscellaneous Message Displayed Description CMOS Date/Time Not Set The CMOS Date and/or Time are invalid. This error can be resolved by readjusting the system time in AMIBIOS Setup. CMOS Battery Low CMOS Battery is low . This message usually indicates that the CMOS b attery needs to be replaced.
Chapter 4 65 USB eModule Error Messages SMBIOS eModule Error Messages CPU eModule Error Messages MPS Table (Multi-processor) eModule Error Messages Message Displayed Description Wa r n i n g ! Unsupported USB device found and disabled! This message is d isplayed when a non-bootable USB device i s enumerated and disabled by the BIOS.
66 Chapter 4 BIOS Recovery 1. Prepare a USB storage device and keep it ready in hand. (1). Connect the USB storage device to a USB port on your computer . (2). Copy the target B IOS ROM f ile to a USB storage device. (3). Rename the target BIOS to “ amib oot.
Chapter 4 67 4. Press Delete to run the Setup Utility . 5. In the Setup Utility , select Load Default Settings , then press Enter . 6. Select Ok , then press Enter . 7. Select Save & Exit Setup , then press Enter . 8. Select Ok , then press Enter .
68 Chapter 4 Undetermined Problems The diagnostic proble ms does not identify which ad apter or device failed, which in stalled devices are incorrect, whether a short circuit is suspected, or whether the system is inoperative. NOTE: V erify that all attached devices a re supported by the computer .
Chapter 5 69 System Block Diagram System Block Diagram and Board Layout Chapter 5.
70 Chapter 5 Board Layout Mainboard No Code Description 1 KBMSCONN1 T op: PS2 Mouse port Bottom: PS2 Keyboard port 2 HDMI1 HDMI port 3 VGA1 VGA port 4 USBESA T A1 T op: USB ports Bottom: eSA T A port 5 USBLAN1 T op: Gigabit LAN port Bottom: USB ports 6 AUDJACK1 Audio jack 5.
Chapter 5 71 9 DIMM 1-4 DDR3 DIMM slot 10 PWR2 24-pin A TX power connector 1 1 DEBUGH1 12 pin debug port 12 BT1 RTC battery 13 SA T A 1-4 SA T A 1-4 connectors 14 GPIOH2 GPIOH2 header 15 GPIOH1 GPIOH1.
72 Chapter 5.
Chapter 6 73 This chapter offers the FRU (Field Replaceable Unit) list in global config uratio n of the X3400/X5400 desktop computer . Refer to this chapter w hen ever ordering the parts to rep air or for RMA (Return Merchandise Authorization).
74 Chapter 6 Exploded Diagram X3400 No. Part Name No. Part Name 1 PL T ACER L OGO BOXER X5 16 MAGNET 10*6*3 2 BEZEL FRONT B BOXER X550 17 PL T ASPIRE LOGO BOXER X550 3 CVR COSMETIC ART WORK BOXER X550.
Chapter 6 75 X5400 No. Part Name No. Part Name 1 PL T ACER LOGO BOXER X5 17 PL T ASPIRE LOGO BOXER X550 2 BEZEL FRONT B BOXER X550 18 PL T ODD KNOB LOGO BOXER X550 3 CVR COSM ETIC ART WORK BO XER X550.
76 Chapter 6 X3400 FRU List System model: ACER_AX3400 ABOXER II (NO:91.3C401.A0 1G ) Category Part Name Acer Part No. BOARDS FRONT IO BOARD CENTURY W/AUDIO CABLE*1&USB CABLE*2 55.SC 101.001 CARD READER 9 IN 1 8.5L AU6476 W/USB2.0 & USB CABLE W/O 1394 CR.
Chapter 6 77 ASSEMBL Y LOWER CASE FOR BOXER X350 TBD HDD&ODD COVER BRACKET 33.SC101.002 FRONT BEZEL W/LED SWITCH CABLE FOR X350 TBD CPU/PROCESSOR CPU AMD PHENOM II X2 545 80W 3 .0GHZ 7M TOT AL CACHE 80W CALLIST 1M L2 CACHE KC.PH202.545 DVD-RW DRIVE ODD PLDS SUPER-MUL TI DRIVE HH 16X DH-16AASH BLACK BEZEL SA T A FOR HF+WINDOWS7 KU.
78 Chapter 6 KEYBOARD KEYBOARD USB 104 KEY CHICONY KU-07603US25522V BLACK US W/O EKEY KB.USB03.192 POINTING DEVICE MOUSE USB OPT SM-9625 LITEON SM-30700-00W MS.1 1200.018 POWER SUPPL Y POWER SUPPL Y 220W EUP 1 15V AC/230V NPFC DEL T A DPS- 220UB A EUP PY .
Chapter 6 79 X5400 FRU List System model:ACER_AX5400 ABOXER II (NO: 91.3 C401.A01) Category Part Name Acer Part No. BOARDS FRONT IO BOARD CENTURY W/AUDIO CABLE*1&USB CABLE*2 55.SC101.001 CARD READER 9 IN 1 8.5L AU6476 W/USB2.0 & USB CABLE W/O 1394 CR.
80 Chapter 6 ASSEMBL Y LOWER CASE FOR BOXER X550 TBD ASSEMBL Y TOP COVER W/LED SWITCH CABLE FO R BOXER X550 TBD HDD&ODD COVER BRACKET 33.SC101.002 FRONT BEZEL W/LED SWITCH CABLE FOR X550 TBD CPU/PROCESSOR CPU AMD A THLON II X2 80W 3.0GHZ 7M TOT AL CACHE 80W CALLIST 1M L2 CACHE KC.
Chapter 6 81 KEYBOARD KEYBOARD USB 104 KEY LITE-ON SK-9625S SG-30703-XUW BLACK US WITH NEW COLOR AC-MT -018 KB.USB0B.082 POWER SUPPL Y POWER SUPPL Y 220W PFC 230V DEL T A DPS-220UB-1 A EUP PY .2200F .006 SCREWS SCREW I NO6-32 L5 BZN 86.00J07.B60 SCREW P AN #6-32 L6 NI BOXER WZS 86.
82 Chapter 6.
Appendix A 83 This section provides technica l specifications for the system. Processor System Board Major Ch ip s AMD Phenom II X4 Item Specificati on Model number 805 810 820 900E 905E 910 925 Frequency (GHz) 2.
84 Appendix A System Memory System BIOS Hard Disk Drive VGA Interface Item Sp ecification Memory type DDR3-667/800/1 066/1333 unb uffered DIMM Module name PC3-8500/10600 Organization ECC DIMM sockets .
Appendix A 85 PCI Interface Network Interface SA T A Interface Audio Interface Keyboard and Input Devices Item Specification PCI controller nVIDIA GeForce 8200 (MCP78PV) Number of slots PCI Express x .
86 Appendix A Optical Drive BD Combo Module Item Sp ecification V endor HLDS Model name BH 30N CH20N Drive type BD-R ewriter BD-Combo Write S peed BD-R (SL/DL) 2x, 4x CL V , 6x PCA V / 2 x , 4 x C L V.
87 Appendix A Super Multi Item Specification V endor HLDS PLDS Model Name GH-41N DH-16AASH Drive T ype Super Multi Super Multi Write S peed CD-R: 4x, 8x, 16x CL V , 24x, 32x, 40x PCA V CD-RW : 4x, 10x,16x CL V , 24x, 32x ZCL V (High S p eed: 10x, Ultra S peed: 16x, 24x, US Plus: 16x, 24x, 32x) DVD+R:2.
Appendix A 88 Buffer Size 2 MB 2 MB Interface T ype Serial A T A Serial A T A Super Multi Item Specification.
An important point after buying a device Acer X5400 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Acer X5400 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Acer X5400 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Acer X5400 you will learn all the available features of the product, as well as information on its operation. The information that you get Acer X5400 will certainly help you make a decision on the purchase.
If you already are a holder of Acer X5400, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Acer X5400.
However, one of the most important roles played by the user manual is to help in solving problems with Acer X5400. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Acer X5400 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
