Hardware Maintenance Manual
Contents
1. 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 all memory modules Refer to Replacing a memory module Step 6 Remove the board Refer to Replacing the board 40 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Step 7 Remove the heat sink Refer to Replacing the heat sink Step8 Remove the Wi Fi card Refer to Replacing the Wi Fi card Step 9 Remove all the cables connected to the motherboard Step 10 Remove the four screws that secure the motherboard to the rear cover lift it up to remove it E Step 11 To install the new motherboard a d e Insert the notched end of the Wi Fi card into the card port on the new motherboard and secure it with the screw Connect the antenna cable s to the Wi Fi card Line up the holes on the new motherboard with the mounting holes on the rear cover and secure the new motherboard with the four screws Attach the heat sink Wi Fi card memory modules and I O board to the new motherboard Connect all the cables to the new motherboard Step 12 Reattach the rear cover and secure it with the screws Replacing the converter board Note Tu2. 24 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Chapter 8 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 2013 2013 25 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 computer Refer to Left and right view and Rear view for help with locating the various connectors lt Note Your keyboard will be connected to USB connector on one side or at the rear of the
3. CAUTION Electrical current from power telephone and communication cables can be hazardous To avoid personal injury or equipment damage disconnect any attached power cords 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 2013 2013 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 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 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
4. Refer to Removing the rear cover Remove the 4 screws that secure the heat sink module to the motherboard Lift up the heat sink to remove it Attention Place the heat sink upside down on a flat surface to prevent thermal grease contaminating other components To install the new heat sink a Use an alcohol pad to wipe the thermal grease off the CPU b Line up the new heat sink module with the mounting holes on the motherboard c Secure the new heat sink to the motherboard with the screws making sure to fit the screws in sequence following the numbers printed on the new heat sink d Use the adhesive tape to seal the gap between the heat sink and system fan Chapter 8 Replacing hardware 35 Step 8 Reattach the rear cover and secure it with the screws Replacing a memory module Attention Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover To replace amemory 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
5. Uruguay LA High Voltage Argentina Paraguay Uruguay LA High Voltage Argentina Paraguay Uruguay 1 ET Chapter 9 FRU lists Flex 20 49 Switzerland Liechtenstein 31039103 Switzerland Liechtenstein 31049508 Switzerland Liechtenstein 31503361 1 South Africa Macao Namibia Nepal Pakistan Swaziland Uganda 31039105 South Africa Macao Namibia Nepal Pakistan Swaziland Uganda 31049501 1 South Africa Macao Namibia Nepal Pakistan Swaziland Uganda 31503355 1 E dice China USA UK Germany 31504730 1 Ouxun GGEO Beta 1 5w Speaker 25213867 N Liteon SK 8861 CH 2 4G KB Only Silver8 25210752 Liteon SK 8861 SA 2 4G KB Only Silver8 25210744 N Liteon SK 8861 ES 2 4G KB Only Silver8 25210654 Liteon SK 8861 IT 2 4G KB Only Silver8 25210653 Liteon SK 8861 Nordic 2 4G KB Only S8 25210652 N Liteon SK 8861 JP 2 4G KB Only Silver8 25210201 25210198 N Liteon SK 8861 BE EN 2 4G KB Only S8 25210197 N N Liteon SK 8861 US IN 2 4G KB Only S8 25210196 50 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Liteon SK 8861 TH 2 40 KB Only Silver8 N Liteon SK 8861 LA 2 4G KB Only Silver8 N Liteon SK 8861 EN FR 2 4G KB Only S8 N Liteon SK 8861 LA AR 2 46 Only S8 N Liteon SK 8861 KR 2 4G KB Only Silver8 N Liteon SK 8861 TW 2 4G KB Only Silver8 N N N Liteon SK 8861 US 2 4G KB only Silver8 Liteon N70 2 4G mouse D for Silver Silk Liteon SK 8861 DE 2 4G KB only Silver
6. more information see Password considerations on page 13 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 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
7. 8 To install the new Wi Fi card a Insert the new Wi Fi card into the card port and secure it with the screw b Connect the antenna cables to the new Wi Fi card Step 9 Reattach the rear cover and secure it with the screws Replacing the I O board Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover To replace the I O 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 Chapter 8 Replacing hardware 37 Step 3 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 data cable from the board Remove the 2 screws that secure the I O board to the rear cover Slide the I O board and then lift up the I O board to remove it H To install the new board a Line up the I O board with the mounting holes on the rear cover then slide the new into position and secure it with the 2 screws b Connect the data cable to the connector on the board Reattach t
8. 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 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 Retum to the Lenovo BIOS Setup Utility program menu and select the Exit option 6 Select Save Changes and Exit from the menu 14 Lenovo Flex 20 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 Setu
9. Refer to Removing the rear cover Step 5 Push out the latches on both sides of the memory socket to release the memory module E Gently pull the memory module upward to remove it from its socket El Step 6 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 Step 7 Reattach the rear cover and secure it with the screws Replacing the Wi Fi card Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear 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 36 Lenovo Flex 20 All In One PC Hardware Maintenance Manual 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 screw that secures the Wi Fi card to the motherboard Step 6 Disconnect the antenna and data cables from the Wi Fi card Step 7 Pull the Wi Fi card upward to remove it from the socket Step
10. computer However if you decide to set passwords read the following sections Password considerations A password can be any combination of 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 For a strong password use 7 16 characters and a mix of letters and numbers Do not use your name or your user name Do not use a common word or a common name Use something significantly different from your previous password Attention Administrator and Power On passwords are not case sensitive Copyright Lenovo 2013 2013 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
11. either a single event a daily event or a weekly event Wake Up on LAN This feature allows LAN adapter card to the System Copyright Lenovo 2013 2013 55
12. 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 function 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 DANGER Electrical current from power telephone and communication cables is hazardous To avoid a shock hazard Do not connect or disconnect any cables or perform installation maintenance or reconfiguration of this product during an electrical storm Connect all power cords to a properly wired and grounded electrical outlet Connect any equipment that will be attached to this product to a properly wired outlet When possible use one hand only to connect or disconnect signal cables Never turn on any equipment when there is evidence of fire water or structural damage 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 Connect and disconnect cables as described in the following table when installing moving or opening covers on this product or attached devices 6 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Turn everything OFF Turn everything OFF First att
13. 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 28 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Step 4 Remove the two rubber caps that protect the screws El Step 5 Loose the two screws that secure the rear cover to the front bezel Chapter 8 Replacing hardware 29 Step 6 Use a flat head screw driver put the head of screwdriver into the slot in between the panel and the rear cover as shown Then prise the rear cover away from the panel Ell Step 7 Disconnect the transform cable from the connector and separate the rear cover and the panel Eli Step 8 To reattach the rear cover a Line up the rear cover with the front bezel and reconnect the transform cable b Line up the holes on the rear cover with mounting holes on the front bezel and place the rear cover into position C Secure the rear cover to the front bezel with the two screws Reattach the two rubber caps 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 30 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Step 1 Remove any media disks CDs DVDs or memory cards from the shut down the operating system and turn off the computer and all attached devices Step 2 Unplug all power co
14. more than 16 kg 35 16 or objects that you think are too heavy for you Do not perform any action that would create a hazard for the customer or would make the computer 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 Place removed covers and other parts in a safe place away from all personnel while you are servicing the computer Keep your tool case away from areas that people may walk through to ensure no one trips over it 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 nsert the ends of your necktie or scarf inside clothing or fasten it with a nonconductive clip approximately 8 centimeters 3 inches from the end Do not wear jewelry chains metal frame eyeglasses or metal fasteners for your clothing Remember Metal objects are good electrical conductors 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 Reattach all covers correctly before returning the computer to the customer
15. position 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 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 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 Do not use worn or broken tools and testers 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 surg
16. 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 Mechanical hazards 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 Athird 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
17. 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 Chapter 8 Replacing hardware 39 Step 5 Disconnect the Windows function data cable from the connector the motherboard Step 6 Remove the two screws that secure the Windows function board to the rear cover lift up the Windows function board to remove it Step 7 To install the Windows function board a Line up the holes on the new Windows function board with the mounting holes on the rear cover and secure the new Windows function board with the screws b Connect the data cable to the connector on the motherboard Step 8 Reattach the rear cover and secure it with the screws Replacing the motherboard Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear 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
18. 0 All In One PC Hardware Maintenance Manual Chapter 9 FRU lists Flex 20 This chapter lists the information on the field replaceable units FRUs for Lenovo Flex 20 All In One desktop computer Attention Be sure to read and understand all the safety information before replacing any FRUs Notes FRUs that have 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 slightly more difficult to replace e N identifies parts that are not to be replaced by the customer Description Service part number FRU B System board 90003704 for MB FRU W8P 90003703 for MB FRU W8S 90003702 for MB FRU NOK 90003701 for MB FRU W8P 90003700 for MB FRU W8S 90003699 for MB FRU NOK 90003698 for MB FRU W8P 90003697 for MB FRU W8S 90003696 for MB FRU NOK 90003695 for MB FRU W8P 90003694 for MB FRU W8S 90003693 for MB FRU NOK NOK M ULT 3556U MB W8S M ULT 3556U MB W8P M ULT 35560 MB 90003704 N 90003703 N 90003702 N 90003701 N 90003700 N 90003699 N 90003693 N 90003697 N 90003696 N 90003695 N 90003694 N 90003693 N 90004377 N 90004378 N 90004379 N Power supply Liteon 1900 721 90w common adapter DELTA ADP 90XD BC 90W common adapter Cables 36200416 1 36200415 1 31504712 N 31504711 N 31504710 N 31504709 N 31504708 N MGE 900mm wifi antenna cab
19. 8 N Liteon SK 8861 FR 2 4G KB only Silver8 N Liteon SK 8861 GB 2 4G KB only Silver8 N Liteon SK 8861 US EU 2 4G KB Silver8 Liteon SK 8861 BE EN 2 4G KB Silver8 Liteon SK 8861 PT 2 4G KB Silver8 N Liteon SK 8861 EN FR 2 4G KB Silver8 N Liteon SK 8861 JP 2 4G KB Silver8 N Liteon SK 8861 KR 2 4G KB Silver8 Liteon SK 8861 BG 2 4G KB Silver8 N Liteon SK 8861 HU 2 4G KB Silver8 N Liteon SK 8861 GR 2 4G KB Silver8 N Liteon SK 8861 FR 2 4G KB Silver8 N Liteon SK 8861 IL 2 4G KB Silver8 Liteon SK 8861 IT 2 4G KB Silver8 25209221 Liteon SK 8861 SL Liteon SK 8861 ES Liteon SK 8861 TR Liteon SK 8861 DE I I I I I I I I I I I 2 4G KB Silver8 N 2 4G KB Silver8 N 2 4G KB Silver8 N 2 4G KB Silver8 Liteon SK 8861 CH 2 4G KB Silver8 25209216 N gt I Liteon SK 8861 SA 2 4G KB Silver8 N Liteon SK 8861 LA AR 2 4G KB Silver8 N Liteon SK 8861 LA 2 4G KB Silver8 N Liteon SK 8861 Nordic 2 4G KB Silver8 Liteon SK 8861 GB 2 4G KB Silver8 Liteon SK 8861 RU 2 4G KB Silver8 N Liteon SK 8861 US IN 2 4G KB Silver8 N Liteon SK 8861 CS SK 2 4G KB Silver8 N Liteon SK 8861 TH 2 4G KB Silver8 Liteon SK 8861 TW 2 4G KB Silver8 N Liteon SK 8861 US MY 2 4G KB Silver8 N Liteon SK 8861 US 2 4G KB Silver8 N gt lt N N N N N N N N N Chapter 9 FRU lists Flex 20 51 KahunaV 500G 8G MLC ST500LM000 HDD LH N Mena 52 Lenovo Flex 20 All In One PC Hard
20. 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 power cable from the connector on the motherboard 32 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Step 6 Remove the 4 screws that secure the hard disk drive to the rear cover Ey Step 7 Lift up the hard disk drive to remove it Step 8 Disconnect the data and power cable from the hard disk drive Step 9 Remove the 4 screws that secure the hard disk drive to the bracket pieces E Chapter 8 Replacing hardware 33 b Slide the new hard disk drive into the hard disk drive bay c Secure the new hard disk drive to the rear cover with the 4 screws d Connect the data and power cables to the new hard disk drive Step 11 Reattach the rear cover and secure it with the screws Replacing the system fan Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover To replace the system fan 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 righ
21. Unplug all power cords from electrical outlets 42 Lenovo Flex 20 All In One PC Hardware Maintenance Manual 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 Chapter 8 Replacing hardware 43 Step 5 Remove the 2 screws that secure the camera to the front bezel Step 6 Lift up the camera and disconnect the data cable from the camera Step 7 Remove the two screws that secure the camera to the housing EM then lift the camera out as shown El 44 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Step 9 Reattach the rear cover and secure it with the screws Replacing the LED panel module Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover To replace the LED panel module Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 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 othe
22. ach all cables to devices First remove power cords from outlets Attach signal cables to connectors Remove signal cables from connectors Attach power cords to outlet Remove all cables from devices Turn device ON CAUTION When replacing the lithium battery use only Part Number 45 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 Throw into or immerse in water Heat to more than 100 C 212 F Repair or disassemble Dispose of the battery as required by local ordinances or regulations CAUTION When laser products such as CD ROMs DVD ROM drives fiber optic devices or transmitters are installed note the following 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 Use of controls or adjustments or performance of procedures other than those specified herein might result in hazardous radiation exposure vw 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 di
23. 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 same 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 Keep the parts in protective packages until they are inserted into the product Avoid contact with other people while handling the part 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 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
24. 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 Replacing the power adapter To replace the power adapter 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 Locate the connector for the power cord Refer to Rear view 26 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Step 3 Disconnect the failing power adapter from the computer ee IN 7 Step 4 To install the new power adapter a Connect the new power adapter to the same connector Chapter 8 Replacing hardware 27 Removing the rear cover Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear 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 touch screen from scratches or other damage To remove the rear cover 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
25. d components Chapter 8 Replacing hardware General information re Replacing the keyboard and mouse Replacing the power adapter Removing the rear cover Replacing the battery Replacing the hard disk drive Replacing the system fan Replacing the heat sink Replacing amemory module Replacing the Wi Fi card Replacing the I O board Replacing the speaker system Replacing the Windows function board Replacing the motherboard Replacing the converter board Replacing the camera Replacing the LED panel modals Chapter 9 FRU lists Flex 20 Chapter 10 Additional Service Information 20 21 25 25 26 26 28 30 31 34 35 36 36 37 38 39 40 41 42 45 47 55 iV Lenovo Flex 20 All In One PC Hardware Maintenance Manual Chapter 1 About this manual This manual contains service and reference information for Lenovo Flex 20 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
26. du pr sent document avant d ex cuter les instructions Lesen Sie unbedingt alle Hinweise vom Typ ACHTUNG oder VORSICHT in dieser Dokumentation bevor Sie 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 BUT EAT D Bg BEA IPRC SE CRUS E N o SUCHE IST gt EE ARAE PE Copyright Lenovo 2013 2013 1 2 Lenovo Flex 20 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 Keep the areas around the computer clear and clean during and after maintenance 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 RR 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
27. es and missing safety grounds Do not touch live electrical circuits with the reflective surface of a plastic dental mirror This surface is conductive and touching a live circuit can cause personal injury and damage to the computer 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 Lenovo Flex 20 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 Electrical hazards especially primary
28. he rear cover and secure it with the screws Replacing the speaker system Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover To replace the speaker system 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 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 38 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Step 5 Disconnect the speaker cable from the connector on motherboard Step 6 Lift up speaker system to remove it Step 7 To install the new speaker system a Line up the new speaker system with the mounting rubber screws b Connect the new speaker cable to the connector on the motherboard Step 8 Reattach the rear cover and secure it with the screws Replacing the Windows function board Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover To replace the power switch board Step 1 Remove any media disks CDs DVDs or memory cards from the drives
29. hen select Onboard Ethernet Support or LAN Boot Agent 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 drive 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 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 16 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Selecting or changing the startup device sequence To view or permanently change the configured startup device sequence do the following 1 Start the Lenovo BIOS Setup Utility prog
30. land Jordan Kenya Kuwait Malta Nigeria Oman Qatar United Arab US Canada Barbados Belize Bolivia Costa Rica Columbia Dominican Republic Ecuador El 31049517 1 Emirates Trinidad and Tobago Saudi Arabia Sri Lanka UK Hong Kong Singapore Malaysia Bahrain Bangladesh Botswana Burma Brunei 31503352 Cyprus Ghana lreland Jordan Kenya Kuwait Malta Nigeria Oman Qatar United Arab Emirates Trinidad and Tobago Saudi Arabia Sri Lanka Albania Algeria Angola Austria Azerbaijan Belarus Belgium Bosnia Bulgaria Croatia Cambodia Cote amp t 035332 d ivoire Czech Estonia Egypt Finland France Georgia Germany Greece Herzegovina Hungary Indonesia Iceland Kazakhstan Kyrgyzstan Laos Latvia Lebanon Lithuani Greece Herzegovina Hungary Indonesia Iceland Kazakhstan Kyrgyzstan Laos Latvia Albania Algeria Angola Austria Azerbaijan Belarus Belgium Bosnia Bulgaria Croatia Cambodia Cptel 049497 d ivoire Czech Estonia Egypt Finland France Georgia Germany Lebanon Lithuani Greece Herzegovina Hungary Indonesia Iceland Kazakhstan Kyrgyzstan Laos Latvia Albania Algeria Angola Austria Azerbaijan Belarus Belgium Bosnia Bulgaria Croatia Cambodia Cptel 049518 d ivoire Czech Estonia Egypt Finland France Georgia Germany Lebanon Lithuani India Bangladesh Sri Lanka 31035395 India Bangladesh Sri Lanka 31503353 Italy Chile Libya 31039104 Italy Chile Libya 31049504 Italy Chile Libya Brazil 31035828 Brazil 31049505 Brazil LA High Voltage Argentina Paraguay
31. le_Beta LS 900mm wifi antenna cable _Beta MGE 350mm wifi antenna cable_Beta LS 350mm wifi antenna cable_Beta MGE140mm Webcam cable Copyright Lenovo 2013 2013 47 MGE 150mm FFC cable 31504690 N LS 150mm FFC cable 31504689 N Touch control board LG 19 5 PCT touch CB Beta 31504154 Mastouch 19 5 PCT Touch CB Beta 31504152 N 48 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Salvador Guatemala Haiti Honduras Jamaica Mexico Netherlands Antilles Nicaragua Panama Philippines Peru Venezuela Thainland US Canada Barbados Belize Bolivia Costa Rica Columbia Dominican Republic Ecuador El 31033858 1 US Canada Barbados Belize Bolivia Costa Rica Columbia Dominican Republic Ecuador El 31033857 1 Salvador Guatemala Haiti Honduras Jamaica Mexico Netherlands Antilles Nicaragua Panama Philippines Peru Venezuela Thainland Salvador Guatemala Haiti Honduras Jamaica Mexico Netherlands Antilles Nicaragua Panama Philippines Peru Venezuela Thainland Australia New Zealand 31035397 1 Australia New Zealand 31049500 Australia New Zealand 31049520 Japan 31503423 Japan 31503424 Japan 31503425 UK Hong Kong Singapore Malaysia Bahrain Bangladesh Botswana Burma Brunei Cyprus Ghana lreland Jordan Kenya Kuwait Malta Nigeria Oman Qatar United Arab Emirates Trinidad and Tobago Saudi Arabia Sri Lanka UK Hong Kong Singapore Malaysia Bahrain Bangladesh Botswana Burma Brunei 31049496 Cyprus Ghana lre
32. lenovo Lenovo Flex 20 All In One PC Hardware Maintenance Manual ideaideaideaCentreidea Machine Types 10142 F0A9 lenovo Lenovo Flex 20 All In One PC Hardware Maintenance Manual Machine Types 10142 F0A9 First Edition August 2013 30th Copyright Lenovo 2013 2013 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 Changing booting mode Exiting the Lenovo BIOS Setup Utility program Chapter 6 Symptom to FRU Index Hard disk drive boot error Power Supply Problems POST error codes Copyright Lenovo 2013 2013 aw wo 0 0 11 13 13 13 13 15 16 17 17 19 19 19 20 Undetermined problems Chapter 7 Locating connectors controls an
33. n menu select the Startup option 3 Select the Boot Priority then press Enter key From the pop up Boot Priority window choose Legacy mode 4 Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 5 Select Save Changes and Exit 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 f 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 f 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 Lenovo Flex 20 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 also 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 Unde
34. omponents have been removed and the problem continues replace the system board 20 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Chapter 7 Locating connectors controls and components This section provides illustrations to help locate the various connectors controls and components of the computer Front view The following illustration shows the location of controls and components on the front of the computer Attention Be careful not to block any air vents on the computer Blocked air vents can cause overheating 5 I 1 Built in microphone 4 Ambient light sensor 2 Camera LED indicator 5 Power LED indicator 3 Built in camera 6 Windows button O Copyright Lenovo 2013 2013 21 Left and right view The following illustration shows the location of connectors controls and components on the left and right side of the computer gt 22 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Rear view The following illustration shows the location of connectors and components on the rear of the computer 4 gt f PG C ED I US A 2 5 4 Screen rotation lock button 5 Stand lock Chapter 7 Locating connectors controls and components 23
35. omputer 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 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 o f External devices modem printer or mouse Extended video memory External Cache External Cache RAM Hard disk drive Disk drive 3 Power on the computer to re test the system 4 Repeat steps 1 through 3 until you find the failing device or component If all devices and c
36. p Utility program menu and select the Exit option Select Save Changes and Exit from the menu To change 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 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 men
37. r 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 Remove the converter board and cables Refer to Replacing the converter board Remove the camera and housing Refer to Replacing the camera Remove the tape that secures the LVDS cable to the connector Press the pins to unlock the LVDS cable from the connector on the LED panel then pull it out The LED panel module including LED panelGlassFront bezelTouch control board Remove the four screws that secure the front bezel hinge then lift up the front bezel hinge to remove it Chapter 8 Replacing hardware 45 Step 11 Remove the transform board LVDS camera and touch cable from the LED panel Step 12 To install the new the LED panel module a 9 Connect the LVDS cable to the connector and touch control board Reattach the converter board transform board to the LED panel Reattach the camera to the front bezel Connect the converter cables to the connectors on both LED panel and converter board Connect the LVDS cable to the connectors on both LED panel and transform board Connect the touch cable to the connectors on both transform board and touch control board Attach the front bezel hinge to the front bezel Step 13 Reattach the rear cover and secure it with the screws 46 Lenovo Flex 2
38. ram 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 arrows to select a device Use the lt gt lt gt keys to move a device up or down Use the x key to exclude 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 Changing booting mode There are two boot modes UEFI and Legacy for your computer The default boot mode for your computer is the UEFI mode If you need to install a legacy Windows operating system any operating system before Windows 8 on your computer you must change the boot mode to Legacy support The legacy Windows operating system cannot be installed if you don t change the boot mode To change the booting mode 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 Lenovo BIOS Setup Utility program mai
39. rds 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 power cable from the connector on the motherboard Step 6 Remove the five the screws that secure the battery to the rear cover then lift up the battery pack as shown 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 five screws c Connect the power cable to the connector on the motherboard Step 8 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 rear cover To replace the hard disk drive Chapter 8 Replacing hardware 31 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
40. rect 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 power 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 2 7 mp m u CAUTION Do not place any object weighing more than 82 kg 180 Ibs on top of rack mounted devices 8 Lenovo Flex 20 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 Lenovo Flex 20 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 90 264 Input frequency 47Hz 63Hz Copyright Lenovo 2013 2013 9 10 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Chapter 4 General Checkout Attention The drives in the computer you are se
41. rn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover To replace the converter 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 Chapter 8 Replacing hardware 41 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 two cables from the converter board Step 6 Lift up the converter board to remove it Step 7 To install the new converter board a Line up the holes in the new converter board with the mounting marks on the LED panle and attach the new converter board to the LED panel b Connect the two cables to the new converter board Step 8 Reattach the rear cover and secure it with the screws Replacing the camera Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover To replace the camera 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
42. rvicing might have been rearranged or the drive startup sequence may have been changed Be extremely careful during write operations such as copying 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 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 2013 2013 11 12 Lenovo Flex 20 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 set
43. t 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 power cable from the connector on the motherboard Step 6 Remove the three screws that secure the system fan to the rear cover Step 7 Lift up the system fan to remove it Step 8 To install the new system fan a Line up the new system fan with the mounting holes on the rear cover and place it into position b Secure the new system fan to the rear cover with the three screws c Connect the new power cable to the connector on the motherboard 34 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Step 9 Reattach the rear cover and secure it with the screws Replacing the heat sink Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the rear cover To replace the heat sink Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 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
44. termined problems page 20 Notes f you have both an error message and an incorrect audio response diagnose the error message first If you cannot run the diagnostic tests or you get diagnostic error code when running a test but did receive a POST error message diagnose the POST error message first f 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 Power Cord e On Off Switch connector e System Board Power Supply connectors Microprocessor connections Copyright Lenovo 2013 2013 19 POST error codes Each time you turn the c
45. tings of your computer regardless of which operating system you are using However the operating system settings might override any similar settings 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 1 key Note 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
46. u Enabling or disabling a device The Devices options is used to enable or disable user access to the following USB Functions 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 Onboard Ethernet Controller or LAN Boot Agent Select whether to enable or disable the Onboard Ethernet Controller or select whether to enable or disable load onboard PXE Preboot Execution Environment 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 Select Network Setup press the Enter key t
47. ware Maintenance Manual Beta Hinge Beta Hinge Cover Beta Hinge Lock AVC Beta Rubber foot2 AVC Beta Windows key AVC Beta rubber key AVC Beta bracket for Lock AVC Beta bracket for camera AVC Beta bracket for HDD AVC Beta rear cover 90203930 90203931 IN N N N N N 90203932 31504911 31504910 N 31504908 N 31504907 31504906 N IN 31504725 IN Chapter 9 FRU lists Flex 20 LEN m 31504909 IN 53 54 Lenovo Flex 20 All In One PC Hardware Maintenance Manual Chapter 10 Additional Service Information This chapter provides additional information that the service representative might find helpful Power management 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 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
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