Lenovo IdeaCentre Horizon 2
Contents
1. Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Remove the rear cover Refer to Removing the rear cover Disconnect the battery cable from the connector on motherboard Refer to Replacing the battery Disconnect the speaker cable from the connector on the motherboard H Push the rubber mounting pins outward to release the speaker H To install the new speaker system a Attach the new speaker system to the chassis then secure it with mounting rubber pins b Connect the new speaker cable to the connector on the motherboard c Reconnect the battery cable to the connector on the motherboard Reattach the rear cover Replacing the I O board Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover To replace the I O board Step 1 Step 2 Step 3 Step 4 Step 5 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Unplug all power cords from electrical outlets Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are co2. page 13 2 From the Security menu select Set Administrator Password and press the Enter key 3 The password dialog box will be displayed Type the current password and press the Enter key 4 Leave each new password line item blank then press the Enter key A Setup Notice will be displayed confirming that your changes have been saved 5 Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 6 Select Save Changes and Exit from the menu 14 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Power On Password When a Power On Password is set you cannot start the Lenovo BIOS Setup Utility program until a valid password is typed from the keyboard Setting changing or deleting a Power On Password Note A password can be any combination of letters and numbers up to 16 characters a z and 0 9 To set a Power On Password do the following 1 Start the Lenovo BIOS Setup Utility program see Starting the Lenovo BIOS Setup Utility program on page 13 From the Security menu select Set Power On Password and press the Enter key The password dialog box will be displayed Type the password then press the Enter key Retype the password to confirm If you typed the password correctly the password will be installed Return to the Lenovo BIOS Setup Utility program menu and select the Exit option oar W DY Select Save Changes and Exit from the menu To change a Power On Pass
3. O cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Remove the rear cover Refer to Removing the rear cover Disconnect the battery cable from the connector on motherboard Refer to Replacing the battery Remove the six screws that secure the fan module to the rear cover Disconnect the power cables from the motherboard Lift up the fan module to remove it To install the new fan module a Line up the new fan module with the mounting holes on the rear cover and place it into position b Secure the new fan module to the rear cover with the six screws c Connect the new power cable to the connectors on motherboard d Reconnect the battery cable to the connector on the motherboard Step 10 Reattach the rear cover Replacing the heat sink modules Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover To replace the heat sink modules Chapter 7 Replacing hardware 29 Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Unplug all power cords from electrical outlets Disconnect all cables attached to the computer This includes power cords input output I O
4. Utility program on page 13 2 From the Security menu select Set Administrator Password and press the Enter key 3 The password dialog box will be displayed Type the password then press the Enter key 4 Retype the password to confirm then press the Enter key If you typed the password correctly the password will be installed A Setup Notice will be displayed confirming that your changes has been saved 5 Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 6 Select Save Changes and Exit from the menu To change an Administrator Password do the following 1 Start the Lenovo BIOS Setup Utility program see Starting the Lenovo BIOS Setup Utility program on page 13 2 From the Security menu select Set Administrator Password and press the Enter key 3 The password dialog box will be displayed Type the current password then press the Enter key 4 Type the new password then press the Enter key Retype the new password to confirm it If you typed the new password correctly the new password will be installed A Setup Notice will be displayed confirming that your changes have been saved 5 Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 6 Select Save Changes and Exit from the menu To delete a previously set Administrator Password do the following 1 Start the Lenovo BIOS Setup Utility program see Starting the Lenovo BIOS Setup Utility program on
5. and Rear view for help with locating the various connectors Step 4 Remove the rear cover Refer to Removing the rear cover 24 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Step 5 Disconnect the power cable from the connector on the motherboard Step 6 Remove the six screws that secure the battery to the rear cover H then lift up the battery pack as shown aN Step 7 To install a new battery a Line up the holes with mounting holes on the rear cover then place it into position b Secure the new battery to the chassis with the six screws c Connect the power cable to the connector on the motherboard Step 8 Reattach the rear cover Replacing a memory module Attention Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover To replace a memory module Step 1 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Step 2 Unplug all power cords from electrical outlets Step 3 Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Step 4 Remove the rear cover Refer to Removing the rear cover Step 5 Disconnect the battery cable from th
6. and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Step 4 Remove the rear cover Refer to Removing the rear cover Step 5 Disconnect the battery cable from the connector on motherboard Refer to Replacing the battery Step 6 Remove the memory modules Refer to Replacing a memory module Step 7 Remove the heat sink modules Refer to Replacing the heat sink modules Step 8 Remove all the cables connected to the motherboard IRBIEBDME Chapter 7 Replacing hardware 33 Step 9 Remove the six screws that secure the motherboard to the rear cover and lift up the motherboard to remove it Step 10 To install the new motherboard a Insert the notched end of the Wi Fi card into the card port on the new motherboard and secure it with the screw b Connect the antenna cable s to the Wi Fi card c Attach the heat sink modules and the memory modules to the motherboard Align the holes on the new motherboard with the mounting holes on the rear cover and secure the motherboard to the rear cover with the screws e Connect all the cables to the new motherboard Step 11 Reattach the rear cover Replacing the camera Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover To replace the camera Step 1 Step 2 Step 3 Step 4 Remove any med
7. controls is near you Remember Another person must be there to switch off the power if necessary Use only one hand when working with powered on electrical equipment keep the other hand in your pocket or behind your back Remember There must be a complete circuit to cause electrical shock By observing the above rule you may prevent a current from passing through your body When using a tester set the controls correctly and use the approved probe leads and accessories for that tester Stand on suitable rubber mats obtained locally if necessary to insulate you from grounds such as metal floor strips and machine frames Observe the special safety precautions when you work with very high voltages these instructions are in the safety sections of the maintenance information Use extreme care when measuring high voltages e Regularly inspect and maintain your electrical hand tools to ensure they are safe to use e Do not use worn or broken tools and testers e Never assume that power has been disconnected from a circuit First check that it has been powered off e Always look carefully for possible hazards in your work area Examples of these hazards are wet floors non grounded power extension cables conditions that may cause or allow power surges and missing safety grounds e Do not touch live electrical circuits with the reflective surface of a plastic dental mirror This surface is conductive and touching a live circu
8. to re test the system 4 Repeat steps 1 through 3 until you find the failing device or component n 0 0 G If all devices and components have been removed and the problem continues replace the system board 20 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Chapter 7 Replacing hardware Attention Do not remove the computer cover or attempt any repair before reading the Important safety information in the Safety and Warranty Guide that was included with your computer To obtain copies of the Safety and Warranty Guide go to the Support Web site at http support lenovo com Note Use only parts provided by Lenovo General information Pre disassembly instructions Before starting the disassembly procedure make sure that you do the following 1 Turn off the power to the system and all peripherals 2 Unplug all power and signal cables from the computer 3 Place the system on a flat stable surface Copyright Lenovo 2014 21 Replacing the keyboard and mouse To replace the keyboard and mouse Step 1 Step 2 Step 3 Step 4 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Unplug all power cords from electrical outlets Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are connected to the compu
9. 049517 1 Panama Philippines Peru Venezuela Thainland Albania Algeria Angola Austria Azerbaijan Belarus Belgium Bosnia Bulgaria Croatia Cambodia Cote d ivoire Czech Estonia Egypt Finland France Georgia Germany 31049518 1 Greece Herzegovina Hungary Indonesia Iceland Kazakhstan Kyrgyzstan Laos Latvia Lebanon Lithuani UK Hong Kong Singapore Malaysia Bahrain Bangladesh Botswana Burma Brunei vee l Cyprus Ghana Ireland Jordan Kenya Kuwait Malta Nigeria Oman Qatar United Arab 31503352 1 Emirates Trinidad and Tobago Saudi Arabia Sri Lanka LA High Voltage Argentina Paraguay Uruguay Thermal Module amp Fan Accessories 40 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Battery Battery O O Mechanicals C E 19T anaa nuns Is T Cables iS Apba WOON Gabe i Apa NFFO Gabe Sy E LS Alpha II LVDS CABLE 30PIN _310mm 31506677 N LS Alpha Il LVDS CABLE 40PIN _260mm 31506678 N T are E G 919 E H E 919 T E 919 E G 919 LS Alpha II LVDS CABLE 30PIN_FHD _280mm 31507032 N BELTAADP T2028 BBHT common 120W aoas E 919 Chapter 8 FRU lists 41 42 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Chapter 9 General information This chapter provides general information that applies to all computer models covered by this manual Additional Service Information This chapter provides additional information that the service representative might find helpful Power manage
10. Select whether to enable or disable USB Universal Serial Bus functions If the functions are disabled no USB devices can be used Chapter 5 Using the Setup Utility 15 SATA Mode Select Disabled IDE AHCI mode Device driver support is required for AHCI or RAID Depending on how the hard disk drive image was installed changing this setting may prevent the system from booting Onboard Audio Controller Select whether to enable or disable the Onboard Audio Controller When this feature is set to Disabled all devices connected to the audio connectors e g headphones or a microphone are disabled and cannot be used To enable or disable a device do the following 1 Start the Setup Utility program see Starting the Setup Utility program on page 13 2 From the Setup Utility program menu select Devices 3 Select an option as follows Select USB Setup press the Enter key then select USB Functions Select ATA Drivers Setup press the Enter key then select SATA Mode Select Audio Setup press the Enter key then select Onboard Audio Controller 4 Select Disabled or Enabled and press the Enter key 5 Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 6 Select Save Changes and Exit from the menu Notes a If you do not want to save the settings select Discard Changes and Exit from the menu Selecting a startup device If your computer does not boot from a device such as the CD DVD ROM dr
11. cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Remove the rear cover Refer to Removing the rear cover Disconnect the battery cable from the connector on motherboard Refer to Replacing the battery Remove the eight screws that secure the heat sink module to the motherboard Lift up the heat sink module to remove it Attention Place the heat sink upside down on a flat surface to prevent thermal grease from contaminating other components To install the new heat sink module Use an alcohol pad to wipe the thermal grease off the CPU Line up the new heat sink with mounting holes on the motherboard Secure the new heat sink to the motherboard with the eight screws Attach the system fans to the new heat sink and secure it with the screws 929 5 Reconnect the battery cable to the connector on the motherboard Reattach the rear cover Replacing the speaker system Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover To replace the speaker system Step 1 Step 2 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Unplug all power cords from electrical outlets 30 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Step 3
12. clude the device from or include the device in the boot sequence 5 Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 6 Select Save Changes and Exit from the menu Notes a If you do not want to save the settings select Discard Changes and Exit from the menu b If you have changed these settings and want to return to the default settings select Load Optimal Defaults from the menu Exiting the Lenovo BIOS Setup Utility program After you finish viewing or changing settings press the Esc key to return to the Lenovo BIOS Setup Utility program main menu You might have to press the Esc key several times Do one of the following e If you want to save the new settings select Save Changes and Exit from the menu When the Save amp reset window shows select the Yes button and then press the Enter key to exit the Lenovo BIOS Setup Utility program e If you do not want to save the settings select Discard Changes and Exit from the menu When the Reset Without Saving window shows select the Yes button and then press the Enter key to exit the Lenovo BIOS Setup Utility program Chapter 5 Using the Setup Utility 17 18 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Chapter 6 Symptom to FRU Index The Symptom to FRU index lists error symptoms and possible causes The most likely cause is listed first Always begin with Chapter 4 General Checkout on page 11 This index can a
13. d US Canada Barbados Belize Bolivia Costa Rica Columbia Dominican Republic Ecuador El Salvador Guatemala Haiti Honduras Jamaica Mexico Netherlands Antilles Nicaragua 31033858 1 Panama Philippines Peru Venezuela Thainland Albania Algeria Angola Austria Azerbaijan Belarus Belgium Bosnia Bulgaria Croatia CambodiasCote d ivoire Czech Estonia Egypt Finland France Georgia Germany 31035332 1 Greece Herzegovina Hungary Indonesia Iceland Kazakhstan Kyrgyzstan Laos Latvia Lebanon Lithuani UK Hong Kong Singapore Malaysia Bahrain Bangladesh Botswana Burma Brunei ve h Cyprus Ghana Ireland Jordan Kenya Kuwait Malta Nigeria Oman Qatar United Arab 31035396 1 Emirates Trinidad and Tobago Saudi Arabia Sri Lanka LA High Voltage Argentina Paraguay Uruguay UK Hong Kong Singapore Malaysia Bahrain Bangladesh Botswana Burma Brunei vow h Cyprus Ghana Ireland Jordan Kenya Kuwait Malta Nigeria Oman Qatar United Arab 31049496 1 Emirates Trinidad and Tobago Saudi Arabia Sri Lanka Albania Algeria Angola Austria Azerbaijan Belarus Belgium Bosnia Bulgaria Croatia CambodiasCote d ivoire Czech Estonia Egypt Finland France Georgia Germany 31049497 1 Greece Herzegovina Hungary Indonesia Iceland Kazakhstan Kyrgyzstan Laos Latvia Lebanon Lithuani Chapter 8 FRU lists 39 US Canada Barbados Belize Bolivia Costa Rica Columbia Dominican Republic Ecuador El vor h Salvador Guatemala Haiti Honduras Jamaica Mexico Netherlands Antilles Nicaragua 31
14. e connector on motherboard Refer to Replacing the battery Chapter 7 Replacing hardware 25 Step 6 Push out the latches on both sides of the memory socket to release the memory module Gently pull the memory module upward to remove it from its socket Step 7 To install the new memory module a Align the new memory module with the memory socket then insert it and push down on the top edge b Make sure the latches lock the memory module in place c Reconnect the battery cable to the connector on the motherboard Step 8 Reattach the rear cover Replacing the Wi Fi card Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover To replace the Wi Fi card Step 1 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Step 2 Unplug all power cords from electrical outlets Step 3 Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Step 4 Remove the rear cover Refer to Removing the rear cover Step 5 Remove the EMI cover Refer to Removing the EMI cover Step 6 Disconnect the battery cable from the connector on motherboard Refer to Replacing the batt
15. eplacing the battery Replacing a memory module Replacing the Wi Fi card Replacing the hard disk drive Replacing the fan module Replacing the heat sink modules Replacing the speaker system Replacing the I O board Replacing the power switch board Replacing the motherboard Replacing the camera Replacing the LED panel Module Chapter 8 FRU lists Chapter 9 General information Additional Service Information 19 20 20 21 21 22 22 24 25 26 27 29 29 30 31 32 33 34 35 37 43 43 iv IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Chapter 1 About this manual This manual contains service and reference information for IdeaCentre Horizon 2 27 All In One computers listed on the cover It is intended only for trained servicers who are familiar with Lenovo computer products Before servicing a Lenovo product be sure to read the Safety Information The description of the TV tuner card in this manual applies only to computers with a TV tuner card installed It does not apply to computers without a TV tuner card Important Safety Information Be sure to read all CAUTION and DANGER sections in this manual before following any of the instructions Veuillez lire toutes les consignes de type DANGER et ATTENTION du pr sent document avant d ex cuter les instructions Lesen Sie unbedingt alle Hinweise vom Typ ACHTUNG oder VORSICHT in dieser Dokumentation bevor S
16. ery 26 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Step 7 Step 8 Step 9 Step 10 Step 11 Remove the screw that secures the Wi Fi card to the motherboard Disconnect the antenna cable and data cable from the Wi Fi card H Pull the Wi Fi card upward to remove it from the card port H i oa NONNS KY Lal BI T To install the new Wi Fi card a Line up the new Wi Fi card with the card port insert the card into position and secure it with the screw b Reconnect the antenna and data cable to the new Wi Fi card c Reconnect the battery cable to the connector on the motherboard Reattach the rear cover Replacing the hard disk drive Attention Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover To replace the hard disk drive Step 1 Step 2 Step 3 Step 4 Step 5 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Unplug all power cords from electrical outlets Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Remove the rear cover Refer to Removing the rear cover Disconnect the battery cable from the connector on
17. htly more difficult to replace e N identifies parts that are not to be replaced by the customer Description Lenovo P N oo Motherboard b n GSN EHET H GOTO LCD Touch Module DIET TT Memory Copyright Lenovo 2014 37 HMT451S6BFR8A PB 4GB D3L 1600S HF HMT41GS6BFR8A PB 8GB D3L 1600S HF Mic_R D9QBJ 8GB D3L 1600S HF Hard Drive HTS545050A7E380 WD5000LPVX 08VOT ST500LM000 WD10SPCX 24HWSTO 6G 7mm 1T HDD ST500LT012 6G 7mm 5 4K 500G HDD Boards LTN RTL8821AE 1x1ac BT4 0 Combo HMC Liteon WB335 1x1BGN BT4 0 HMC Cbt RTL8723BE 1x1BGN BT HMC ENN BCM20792M NFC Module MSI Alphall power button board MP MSI Alphall IO board MP MSI Alphall Home board MP Camera AVC 1080P 2MIC WV WB Cam Aphal II N Bison 1080P 2MIC WV WB Cam Aphal II N Speaker Alpha2 Wabony 2 5W speaker 25216223 Keyboard amp Mouse Liteon SK 8861 US 2 4G KB Metal8 Liteon SK 8861 TH 2 4G KB Metal8 Liteon SK 8861 CS SK 2 4G KB Metal8 38 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual G G 9 CE 9 GE 91 CE a Teor 889610 zae kemea r J Teor 88961 EN FR 246 kemea G 9 Liteon SK 8861 BE EN 2 4G KB Metal8 25216039 1 Liteon SK 8861 US EU 2 4G KB Metal8 25216040 1 SK 8861 CH 2 4G KB Metal8 Power Cord US Canada Barbados Belize Bolivia Costa Rica Columbia Dominican Republic Ecuador El Salvador Guatemala Haiti Honduras Jamaica Mexico Netherlands Antilles Nicaragua 31033857 1 Panama Philippines Peru Venezuela Thainlan
18. ia disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Unplug all power cords from electrical outlets Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Remove the rear cover Refer to Removing the rear cover 34 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Step 5 Remove the two screws that secure the camera and bracket to the front bezel Lift up the camera and bracket to remove it Step 6 Remove the camera from bracket by removing the two screws and disconnect the data cable from the camera Step 7 To install the new camera a Connect the data cable to the new camera b Secure the new camera to the bracket with the two screws c Line up the holes in the bracket with the mounting holes on the front bezel and secure the new camera with the two screws Step 8 Reattach the rear cover Replacing the LED panel module Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover Chapter 7 Replacing hardware 35 Note It may be helpful to place the computer face down on a soft flat surface for this procedure Lenovo recommends that you use a blanket towel or
19. ie irgendwelche Vorg nge durchf hren Leggere le istruzioni introdotte da ATTENZIONE e PERICOLO presenti nel manuale prima di eseguire una qualsiasi delle istruzioni Certifique se de ler todas as instru es de cuidado e perigo neste manual antes de executar qualquer uma das instru es Es importante que lea todas las declaraciones de precauci n y de peligro de este manual antes de seguir las instrucciones TIE LHH Z RCR BEASTS A E SEK H o PATET TRA AER ARAE PMA BERERA o Copyright Lenovo 2014 1 2 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Chapter 2 Safety information This chapter contains the safety information that you need to be familiar with before servicing a computer General safety Follow these rules to ensure general safety e Keep the areas around the computer clear and clean during and after maintenance s When lifting any heavy object Ensure you can stand safely without slipping Distribute the weight of the object equally across both feet Lift slowly Never move suddenly or twist when you attempt to lift gt OO N Lift by standing or by pushing up with your leg muscles this action removes the strain from the muscles in your back Do not attempt to lift any objects that weigh more than 16 kg 35 Ibs or objects that you think are too heavy for you s Do not perform any action that would create a hazard for the customer or would make the compute
20. ings in the Setup Utility program Starting the Lenovo BIOS Setup Utility program To start the Lenovo BIOS Setup Utility program do the following 1 If your computer is already on when you start this procedure shut down the operating system and turn off the computer 2 Press and hold the F1 key then turn on the computer When the Lenovo BIOS Setup Utility program is displayed release the F1 key Note If a Power On Password or an Administrator Password has been set the Setup Utility program menu will not be displayed until you type your password For more information see Using passwords Viewing and changing settings System configuration options are listed in the Lenovo BIOS Setup Utility program menu To view or change settings see Starting the Setup Utility program You must use the keyboard when using the Lenovo BIOS Setup Utility menu The keys used to perform various tasks are displayed on the bottom of each screen Using passwords You can use the Lenovo BIOS Setup Utility program to set passwords to prevent unauthorized persons from gaining access to your computer and data See Starting the Setup Utility program The following types of passwords are available e Administrator Password e Power On Password You do not have to set any passwords to use your computer However if you decide to set passwords read the following sections Password considerations A password can be any combination of
21. it can cause personal injury and damage to the computer s Do not service the following parts with the power on when they are removed from their normal operating positions in a computer Power supply units Pumps Blowers and fans Motor generators and similar units This practice ensures correct grounding of the units e f an electrical accident occurs Use caution do not become a victim yourself 4 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Switch off power Send another person to get medical aid Safety inspection guide The intent of this inspection guide is to assist you in identifying potential hazards posed by these products Each computer as it was designed and built had required safety items installed to protect users and service personnel from injury This guide addresses only those items However good judgment should be used to identify potential safety hazards due to attachment of features or options not covered by this inspection guide If any hazards are present you must determine how serious the apparent hazard could be and whether you can continue without first resolving the problem Consider the following items and the safety hazards they present e Electrical hazards especially primary power primary voltage on the frame can cause serious or fatal electrical shock e Explosive hazards such as a damaged CRT face or bulging capacitor e Mechanical haza
22. ive disk or hard disk as expected follow one of the procedures below Selecting a temporary startup device Use this procedure to start up from any boot device Note Not all CDs DVDs or hard disk drives are bootable 1 Turn off your computer 2 Press and hold the F12 key then turn on the computer When the Startup Device Menu appears release the F12 key Note If the Startup Device Menu does not display using these steps repeatedly press and release the F12 key rather than keeping it pressed when turning on the computer 3 Use f and arrows to select the desired startup device from the Startup Device Menu and press the Enter key to begin Note Selecting a startup device from the Startup Device Menu does not permanently change the startup sequence Selecting or changing the startup device sequence To view or permanently change the configured startup device sequence do the following 16 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual 1 Start the Lenovo BIOS Setup Utility program see Starting the Lenovo BIOS Setup Utility program on page 13 2 From the Lenovo BIOS Setup Utility program main menu select the Startup option 3 Press the Enter key and select the devices for the Primary Boot Sequence Read the information displayed on the right side of the screen 4 Use and Marrows to select a device Use the lt gt or lt gt keys to move a device up or down Use the lt x gt key to ex
23. lenovo IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Machine Types FOAQ lenovo IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Machine Types FOAQ Second Edition May 2014 27th Copyright Lenovo 2014 LIMITED AND RESTRICTED RIGHTS NOTICE If data or software are delivered pursuant a General Services Administration GSA contract use reproduction or disclosure is subject to restrictions set forth in Contract No GS 35F 05925 Contents Chapter 1 About this manual Important Safety Information Chapter 2 Safety information General safety Electrical safety Safety inspection guide Handling electrostatic discharge sensitive devices Grounding requirements Safety notices Chapter 3 General information Specifications Chapter 4 General Checkout Chapter 5 Using the Setup Utility Starting the Lenovo BIOS Setup Utility program Viewing and changing settings Using passwords Enabling or disabling a device Selecting a startup device Exiting the Lenovo BIOS Setup Utility program Chapter 6 Symptom to FRU Index Hard disk drive boot error Copyright Lenovo 2014 aw wo LM aon on o 11 13 13 13 13 15 16 17 19 19 Power Supply Problems POST error codes Undetermined problems Chapter 7 haat hardware General information aos Replacing the keyboard and mouse Removing the rear cover R
24. letters and numbers up to 16 characters a z and 0 9 For security reasons it is a good idea to use a strong password that cannot be easily compromised We suggest that passwords should follow these rules e For astrong password use 7 16 characters and a mix of letters and numbers e Do not use your name or your user name e Do not use a common word or a common name e Use something significantly different from your previous password Attention Administrator and Power On passwords are not case sensitive Copyright Lenovo 2014 13 Administrator Password Setting an Administrator Password deters unauthorized persons from changing configuration settings You might want to set an Administrator Password if you are responsible for maintaining the settings of several computers After you set an Administrator Password a password prompt is displayed every time you access the Lenovo BIOS Setup Utility program If both the Administrator and Power On Password are set you can type either password However you must use your Administrator Password to change any configuration settings Setting changing or deleting an Administrator Password To set an Administrator Password do the following Note A password can be any combination of letters and numbers up to 16 characters a z and 0 9 For more information see Password considerations on page 13 1 Start the Lenovo BIOS Setup Utility program see Starting the Lenovo BIOS Setup
25. lso be used to help you decide which FRUs to have available when servicing a computer If you are unable to correct the problem using this index go to Undetermined problems on page 20 Notes e If you have both an error message and an incorrect audio response diagnose the error message first e If you cannot run the diagnostic tests or you get a diagnostic error code when running a test but did receive a POST error message diagnose the POST error message first e If you did not receive any error message look for a description of your error symptoms in the first part of this index Hard disk drive boot error A hard disk drive boot error can have the following causes The startup drive is not included in the boot sequence Check the configuration and ensure the startup drive is configuration in the boot sequence No operating system is installed on the boot drive Install an operating system on the boot drive The boot sector on the startup drive is corrupted The drive must be formatted Do the following 1 Attempt to back up the data on the failing hard disk drive 2 Use the operating system to format the hard disk drive The drive is defective Replace the hard disk drive Power Supply Problems Follow these procedures if you suspect there is a power supply problem Check Verify FRU Action Check that the following are properly installed Reseat connectors e Power Cord e On Off Switch connector e S
26. me charge Notes 1 Use product specific ESD procedures when they exceed the requirements noted here 2 Make sure that the ESD protective devices you use have been certified ISO 9000 as fully effective When handling ESD sensitive parts Chapter 2 Safety information 5 e Keep the parts in protective packages until they are inserted into the product e Avoid contact with other people while handling the part e Wear a grounded wrist strap against your skin to eliminate static on your body e Prevent the part from touching your clothing Most clothing is insulative and retains a charge even when you are wearing a wrist strap e Use the black side of a grounded work mat to provide a static free work surface The mat is especially useful when handling ESD sensitive devices e Select a grounding system such as those listed below to provide protection that meets the specific service requirement Note The use of a grounding system is desirable but not required to protect against ESD damage Attach the ESD ground clip to any frame ground ground braid or green wire ground Use an ESD common ground or reference point when working on a double insulated or battery operated system You can use coax or connector outside shells on these systems Use the round ground prong of the AC plug on AC operated computers Grounding requirements Electrical grounding of the computer is required for operator safety and correct system fu
27. ment Power management reduces the power consumption of certain components of the computer such as the system power supply processor hard disk drives and some monitors Advanced configuration and power interface ACPI BIOS As this computer has an ACPI BIOS system the operating system is allowed to control the power management features of the computer and the settings for Advanced Power Management APM BIOS mode is ignored Not all operating systems support ACPI BIOS mode Automatic Power On features The Automatic Power On features within the Power Management menu allow you to enable and disable features that turn on the computer automatically e Wake Up on Alarm You can specify a date and time at which the computer will be turned on automatically This can be either a single event a daily event or a weekly event e Wake Up on LAN This feature allows LAN adapter card to wake the System Copyright Lenovo 2014 43
28. motherboard Refer to Replacing the battery Chapter 7 Replacing hardware 27 Step 6 Disconnect the data and power cables from the hard disk drive Step 7 Remove the four screws that secure the hard disk drive to the chassis then lift up the hard disk drive to remove it H Step 8 Remove the four screws that secure the hard disk drive to the bracket Step 9 Slide the hard disk drive out of the bracket Step 10 Install the new hard disk drive as follows a Slide the new hard disk drive into the bracket Secure the new hard disk drive to the bracket with the four screws Connect the data and power cables to the new hard disk drive Secure the new hard disk drive and bracket to the chassis with the four screws n 0 0 0 Reconnect the battery cable to the connector on the motherboard 28 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Step 11 Reattach the rear cover Replacing the fan module Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover To replace the fan module Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Unplug all power cords from electrical outlets Disconnect all cables attached to the computer This includes power cords input output I
29. nction Proper grounding of the electrical outlet can be verified by a certified electrician Safety notices The CAUTION and DANGER safety notices in this section are provided in the language of English AA DANGER Electrical current from power telephone and communication cables is hazardous To avoid a shock hazard s Do not connect or disconnect any cables or perform installation maintenance or reconfiguration of this product during an electrical storm e Connect all power cords to a properly wired and grounded electrical outlet e Connect any equipment that will be attached to this product to a properly wired outlet e When possible use one hand only to connect or disconnect signal cables e Never turn on any equipment when there is evidence of fire water or structural damage e Disconnect the attached power cords telecommunications cables network cables and modem cables before you open the device covers unless instructed otherwise in the installation and configuration procedures e Connect and disconnect cables as described in the following table when installing moving or opening covers on this product or attached devices 6 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Turn everything OFF Turn everything OFF First attach all cables to devices First remove power cords from outlets Attach signal cables to connectors Remove signal cables from connectors Attach power cords t
30. ng saving or formatting Data or programs can be overwritten if you select an incorrect drive General error messages appear if a problem or conflict is found by an application the operating system or both For an explanation of these messages refer to the information supplied with that software package Use the following procedure to help determine the cause of the problem Power off the computer and all external devices Check all cables and power cords Set all display controls to the middle position Power on all external devices aR OO N Power on the computer e Look for displayed error codes e Look for readable instructions or a main menu on the display If you did not receive the correct response proceed to step 6 If you did receive the correct response proceed to step 7 6 If one of the following happens follow the instruction given e lf the computer displays a POST error go to POST error codes s f the computer hangs and no error is displayed continue at step 7 7 If the test stops and you cannot continue replace the last device tested Copyright Lenovo 2014 11 12 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Chapter 5 Using the Setup Utility The Setup Utility program is used to view and change the configuration settings of your computer regardless of which operating system you are using However the operating system settings might override any similar sett
31. nnected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Remove the rear cover Refer to Removing the rear cover Disconnect the battery cable from the connector on motherboard Refer to Replacing the battery Chapter 7 Replacing hardware 31 Step 6 Disconnect the power connector cable from the connector on the motherboard Step 7 Remove the two screws that secure the I O board to the rear cover H Step 8 Slide out the I O board as shown and disconnect the data cable from the I O board H Step 9 To install the new I O board a Connect the data cable to connector on the new I O board b Line up the holes on the new I O board with the mounting holes on the I O board and secure the I O board to the rear cover with the two screws c Connect the power connector cable to the connector on the motherboard d Reconnect the battery cable to the connector on the motherboard Step 10 Reattach the rear cover Replacing the power switch board Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover To replace the power switch board Step 1 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Step 2 Unplug all power cords from electrical outlets Step 3 Disconnect all cables attached to the computer Thi
32. o outlet Remove all cables from devices Turn device ON CAUTION When replacing the lithium battery use only Part Number 45C 1566 or an equivalent type battery recommended by the manufacturer If your system has a module containing a lithium battery replace it only with the same module type made by the same manufacturer The battery contains lithium and can explode if not properly used handled or disposed of Do not s Throw into or immerse in water e Heat to more than 100 C 212 F e Repair or disassemble Dispose of the battery as required by local ordinances or regulations A CAUTION When laser products such as CD ROMs DVD ROM drives fiber optic devices or transmitters are installed note the following s Do not remove the covers Removing the covers of the laser product could result in exposure to hazardous laser radiation There are no serviceable parts inside the device e Use of controls or adjustments or performance of procedures other than those specified herein might result in hazardous radiation exposure P T Some laser products contain an embedded Class 3A or Class 3B laser diode Note the following These diodes emit radiation when open Do not stare into the beam do not view directly with optical instruments and avoid direct exposure to the beam Chapter 2 Safety information 7 218 kg 37 Ibs 232 kg 70 5 Ibs CAUTION Use safe practices when lifting AA CAUTION The p
33. other soft cloth to protect the computer screen from scratches or other damage To replace the LED panel module Step 1 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Step 2 Unplug all power cords from electrical outlets Step 3 Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Step 4 Remove the rear cover Refer to Removing the rear cover Step 5 Remove the camera Refer to Replacing the camera Step 6 Remove all the cables attached to the front bezel Step 7 To install the new the LED panel a Connect all the cables to the connectors on the LED panel module b Attach the camera to the new LED panel Step 8 Reattach the rear cover 36 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Chapter 8 FRU lists This chapter lists the information on the field replaceable units FRUs Attention Be sure to read and understand all the safety information before replacing any FRUs Notes FRUs that have a 1 or 2 in the CRU column are Customer Replaceable Units CRUs e 1 identifies parts that are fairly simple to replace requiring few or no tools e 2 identifies parts that are slig
34. ower control button on the device and the power switch on the power supply do not turn off the electrical current supplied to the device The device also might have more than one power cord To remove all electrical current from the device ensure that all power cords are disconnected from the power source AA AA 20 gt 1 VU mb gt P CAUTION Do not place any object weighing more than 82 kg 180 Ibs on top of rack mounted devices 8 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Chapter 3 General information This chapter provides general information that applies to all computer models covered by this manual Specifications This section lists the physical specifications for your computer This section lists the physical specifications for your computer Type IdeaCentre Horizon 2 27 This section lists the physical specifications Environment Air temperature Operating 10 to 35 C Transit 20 to 55 C Humidity Operating 35 to 80 Transit 20 to 90 40 C Altitude 86KPa to 106KPa Electrical input Input voltage 90V 264V AC Input frequency 47Hz 63Hz Copyright Lenovo 2014 9 10 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Chapter d General Checkout Attention The drives in the computer you are servicing might have been rearranged or the drive startup sequence may have been changed Be extremely careful during write operations such as copyi
35. p the screw driver head before proceeding Step 5 The front panel and the rear cover are pined together use the wrapped screw driver to push into the hole as illustrated to force the front panel separating from the rear cover For this procedure it might requires using some strengthens while pushing H Working along the gap opened in between the front panel and the rear cover gently to separating the front panel from rear cover Chapter 7 Replacing hardware 23 Step 6 Disconnect the two scalar cables from the connectors on the motherboard as shown PEI Step 7 Put the front panel and rear cover aside Step 8 To reattach the rear cover a Line up the front panel with the rear cover and then reconnect the two scalar cables to the motherboard b Press down along the edge of the rear cover and secure the rear cover to the front panel with the mounting pins Replacing the battery Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover To replace the battery Step 1 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Step 2 Unplug all power cords from electrical outlets Step 3 Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are connected to the computer Refer to Left and right view
36. r unsafe e Before you start the computer ensure that other service representatives and customer personnel are not in a position that would create a hazard for them e Place removed covers and other parts in a safe place away from all personnel while you are servicing the computer e Keep your tool case away from areas that people may walk through to ensure no one trips over it s Do not wear loose clothing that can be trapped in the moving parts of a machine Ensure that your sleeves are fastened or rolled up above your elbows If your hair is long tie or fasten it back e Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconductive clip approximately 8 centimeters 3 inches from the end s Do not wear jewelry chains metal frame eyeglasses or metal fasteners for your clothing Remember Metal objects are good electrical conductors e Wear safety glasses when you are hammering drilling soldering cutting wire attaching springs using solvents or working in any other conditions that might be hazardous to your eyes e After service reinstall all safety shields guards labels and ground wires Replace any safety device that is worn or defective e Reattach all covers correctly before returning the computer to the customer CAUTION Electrical current from power telephone and communication cables can be hazardous To avoid personal injury or equipment damage disconnect any attached power co
37. rds such as loose or missing hardware The guide consists of a series of steps presented as a checklist Begin the checks with the power off and the power cord disconnected Checklist 1 Check exterior covers for damage loose broken or sharp edges 2 Power off the computer Disconnect the power cord 3 Check the power cord for a A third wire ground connector in good condition Use a meter to measure third wire ground continuity for 0 1 ohm or less between the external ground pin and frame ground b The power cord should be the appropriate type as specified in the parts listings c Insulation must not be frayed or worn 4 Remove the cover 5 Check for any obvious alterations Use good judgment as to the safety of any alterations 6 Check inside the unit for any obvious hazards such as metal filings contamination water or other liquids or signs of fire or smoke damage 7 Check for worn frayed or pinched cables 8 Check that the power supply cover fasteners Screws or rivets have not been removed or tampered with Handling electrostatic discharge sensitive devices Any computer part containing transistors or integrated circuits ICs should be considered sensitive to electrostatic discharge ESD ESD damage can occur when there is a difference in charge between objects Protect against ESD damage by equalizing the charge so that the computer the part the work mat and the person handling the part are all at the sa
38. rds telecommunication cables network cables and modem cables before you open the computer covers unless instructed otherwise in the installation and configuration procedures Electrical safety Copyright Lenovo 2014 3 Observe the following rules when working on electrical equipment Important Use only approved tools and test equipment Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents Many customers have rubber floor mats near their equipment that contain small conductive fibers to decrease electrostatic discharge e Find the room emergency power off EPO switch disconnecting switch or electrical outlet If an electrical accident occurs you can then operate the switch or unplug the power cord quickly s Do not work alone under hazardous conditions or near equipment that has hazardous voltages e Disconnect all power before Performing a mechanical inspection Working near power supplies Removing or installing Field Replaceable Units FRUs e Before you start to work on the computer unplug the power cord If you cannot unplug it ask the customer to power off the electrical outlet that supplies power to the machine and to lock the electrical outlet in the off position e f you need to work on a computer that has exposed electrical circuits observe the following precautions Ensure that another person familiar with the power off
39. s includes power cords input output I O cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors Step 4 Remove the rear cover Refer to Removing the rear cover Step 5 Disconnect the battery cable from the connector on motherboard Refer to Replacing the battery Step 6 Disconnect the power cable from the power switch board 32 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Step 7 Remove the two screws that secure the power switch board to the rear cover H lift up the power switch board J and disconnect the cable from the switch board H Step 8 To install the power switch board a Connect the power cable to the new power switch board b Secure the power switch board to the rear cover with the two screws c Reconnect the battery cable to the connector on the motherboard Step 9 Reattach the rear cover Replacing the motherboard Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover To replace the motherboard Step 1 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Step 2 Unplug all power cords from electrical outlets Step 3 Disconnect all cables attached to the computer This includes power cords input output I O cables
40. ter Refer to Left and right view and Rear view for help with locating the various connectors lt lt Note Your keyboard will be connected to a USB connector on one side or at the rear of the computer Disconnect the defective keyboard cable from the computer and connect the new keyboard cable to the same connector Note The mouse can be replaced using the same method Removing the rear cover Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover Note It may be helpful to place the computer face down on a soft flat surface for this procedure Lenovo recommends that you use a blanket towel or other soft cloth to protect the computer screen from scratches or other damage To remove the base cover Step 1 Step 2 Step 3 Remove any media disks CDs DVDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices Unplug all power cords from electrical outlets Disconnect all cables attached to the computer This includes power cords input output I O cables and any other cables that are connected to the computer Refer to Left and right view and Rear view for help with locating the various connectors 22 IdeaCentre Horizon 2 27 All In One PC Hardware Maintenance Manual Step 4 For this procedure it requires using a flat head screw driver Use a piece of soft clothes to wra
41. word do the following 1 Start the Lenovo BIOS Setup Utility program see Starting the Lenovo BIOS Setup Utility program on page 13 2 From the Security menu select Set Power On Password and press the Enter key 3 The password dialog box will be displayed Type the current password then press the Enter key 4 Type the new password then press the Enter key Retype the new password to confirm it If you typed the new password correctly the new password will be installed A Setup Notice will be displayed confirming that your changes have been saved 5 Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 6 Select Save Changes and Exit from the menu To delete a previously set Power On Password do the following 1 Start the Lenovo BIOS Setup Utility program see Starting the Lenovo BIOS Setup Utility program on page 13 2 From the Security menu select Set Power On Password and press the Enter key 3 The password dialog box will be displayed Type the current password and press the Enter key 4 Leave each new password line item blank then press Enter A Setup Notice will be displayed confirming that your changes have been saved 5 Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 6 Select Save Changes and Exit from the menu Enabling or disabling a device The Devices options is used to enable or disable user access to the following USB Functions
42. ystem Board Power Supply connectors e Microprocessor connections Copyright Lenovo 2014 19 POST error codes Each time you turn the computer on it performs a series of tests to check that the system is operating correctly and that certain options are set This series of tests is called the Power On Self Test or POST POST does the following e Checks some basic motherboard operations e Checks that the memory is working correctly e Starts video operations e Verifies that the boot drive is working POST Error Message Description Action Keyboard error Cannot initialize the keyboard Make sure the keyboard is properly connected to the computer and that no keys are held pressed during POST To purposely configure the computer without a keyboard select Keyboardless operation in Startup and set the option to Enabled The BIOS then ignores the missing keyboard during POST Reboot and Select proper Boot device or Insert Boot The BIOS was unable to find a suitable boot device Make Media in selected Boot device sure the boot drive is properly connected to the computer Make sure you have bootable media in the boot device Undetermined problems 1 Power off the computer 2 Remove or disconnect the following components if connected or installed one at a time a External devices modem printer or mouse Extended video memory External Cache External Cache RAM Hard disk drive f Disk drive 3 Power on the computer
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