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Lenovo IdeaCentre C355

1. Liteon SK 8861 BE EN 2 4G KB White8 25211014 1 Liteon SK 8861 US EU 2 4G KB White8 25211015 1 Grandsun Black Single end 1 0m3wire CCC Power Cable R Chapter 10 FRU lists C455 75 76 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Chapter 11 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 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 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 o
2. 66 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Chapter 10 FRU lists C455 This chapter lists the information on the field replaceable units FRUs for Lenovo C455 All In One desktop computer 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 slightly more difficult to replace e N identifies parts that are not to be replaced by the customer ID Copyright Lenovo 2013 67 System fan C355 Delta FAN C355 AVC FAN C355 SUNON FAN Heatsink C455 AVC UMA thermal C455 Coolermaster UMA thermal C455 AVC DIS thermal C455 Coolermaster DIS thermal Rear I O module C455 Rear IO Board W GPU W TV W HDMI C455 Rear IO Board W GPU W O TV W HDMI C455 Rear IO Board W GPU W TV W O HDMI C455 Rear IO Board W GPU W O TV W O HDMI B CAS card reader B540 B Cas Board 90000267 C340 POWER LED Board W IR 90000630 C340 POWER LED Board W O IR 90001136 C340 Function Board 90000631 Converter board C355 Converter 90003815 Weak JOY 18 Motherboard C355 W8S UMA CPU E2 3000 W USB3 0 MB 90003799 C355 W8S GPU 1G CPU A6 5200 W USB3 0 MB 90003800 C355 W8S GPU 1G CPU A4 5000 W USB3 0 MB 90003801 C355 W8S UMA CPU A4 5000 W USB3 0 MB 90003802 C355 W8S GPU 1G CPU E2 3000 W USB3
3. a S O A l o o a H B F 118 S 2 L Lm o EO gu mpm dm miu uE du 10 DC in connector 11 Rear I O module connector 12 TV Tuner card connector 13 B CAS card reader connector 14 Wi Fi card connector 15 Front function board connector 16 Power control connector 17 Speaker connector 18 Memory connector Chapter 7 Locating connectors controls and components 25 26 Lenovo C355 C455 All In One ComputerHardware 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 consumersupport 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 O Copyright Lenovo 2013 27 Replacing the keyboard and mouse Note Your keyboard will be connected to a USB connector at either side or at the rear of the computer To replace th
4. 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 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 instruc es Es importante que lea todas las declaraciones de precauci n y de peligro de este manual antes de seguir las instrucciones BUT EAT LHH ZT CARO EC A IPRC SE A fb 00 PUT ETA ARMA E P UAR ES ASIAM e Copyright Lenovo 2013 1 2 Lenovo C355 C455 All In One ComputerHardware 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 When lifting any heavy object Ensure you can stand safely without slipping Distribute the weight of the object equally across bo
5. Left and right views and Rear view for help with locating the various connectors Step 4 Remove the stand base Refer to Removing the stand base Step 5 Remove the foot cover Refer to Removing the foot cover Step 6 Push the hard disk drive bracket El then slide the hard disk drive and bracket out of the chassis as shown H Chapter 8 Replacing hardware 33 Step 7 Step 8 Step 9 Push the lock pins outward to release the hard disk drive from the bracket To install the new hard disk drive a Line up the new hard disk drive with the bracket and secure it with the pins b Slide the hard disk drive and bracket back into position Reattach the foot cover and stand base Replacing the optical drive Attention Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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 Step 1 Step 2 Step 3 Step 4 Step 5 Remove any media disks CDs 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
6. 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 Use 1 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 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 Use and Varrows to select a device Use the lt gt or lt gt keys to move a de
7. Remove the optical drive Refer to Replacing the optical drive Step 7 Remove the stand holder Refer to Removing the stand holder Step 8 Remove the middle cover Refer to Removing the middle cover Step 9 Remove the heat sink Refer to Replacing the heat sink Chapter 8 Replacing hardware 39 Step 10 Remove the two screws that secure camera to the front bezel Step 11 Lift up the camera P and disconnect the data cable from the camera El D Step 12 To install the new camera a Connect the data cable to the new camera b Line up the holes in the new camera with the mounting holes on the front bezel and secure it with the two screws Step 13 Reattach the middle cover optical drive stand holder foot cover and stand base Removing the EMI cover Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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 replace the EMI 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 40 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Step 3 Disco
8. Step 10 Reattach the stand holder optical drive foot cover and stand base Replacing the converter board Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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 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 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 stand base Refer to Removing the stand base Step 5 Remove the foot cover Refer to Removing the foot cover Step 6 Remove the optical drive Refer to Replacing the optical drive Step 7 Remove the stand holder Refer to Removing the stand holder Step 8 Remove the middle cover Refer to Removing the middle cover 38 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Step 9 Disconnect the two cables from the converter and the
9. printer or mouse Extended video memory External Cache External Cache RAM Hard disk drive f 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 o app If all devices and components have been removed and the problem continues replace the system board 20 Lenovo C355 C455 All In One ComputerHardware 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 Font 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 an A fi lenovo 1 Built in microphone 6 Menu button 2 Built in camera 7 Left direction button 3 Hard disk drive indicator 8 Right direction button 4 Wi Fi status indicator 9 Monitor On Off button 5 Monitor On Off indicator 10 Built in IR receiver Only functional on models equipped with a IR receiver module Copyright Lenovo 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 H H
10. 0 MB 90003807 C355 W8S UMA CPU E1 2500 W USB3 0 MB 90003808 68 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Front bezel C355 Front Bezel Black 90203394 C355 Front Bezel White 90203395 N C355 Front Bezel Red 90203396 N Middile cover C455 Rear Cover W TV W HDMI Black N C455 Rear Cover W TV W O HDMI Black N C455 Rear Cover W O TV W HDMI Black N C455 Rear Cover W O TV W O HDMI Black N C455 Rear Cover W TV W O HDMI White N C455 Rear Cover W O TV W HDMI White N C455 Rear Cover W O TV W O HDMI White N C455 Rear Cover W TV W HDMII Red N C455 Rear Cover W TV W O HDMI Red N C455 Rear Cover W O TV W HDMI Red N C455 Rear Cover W O TV W O HDMI Red N Foot cover C440 Slide Cover W TV W HDMI Black N C440 Slide Cover W TV W O HDMI Black N C440 Slide Cover W O TV W HDMI Black N C440 Slide Cover W O TV W O HDMI Black N C440 Slide Cover W TV W HDMI White N C440 Slide Cover W TV W O HDMI White 90201473 N C440 Slide Cover W O TV W HDMI White 90201474 N C440 Slide Cover W O TV W O HDMI White 90201475 N C455 Slide Cover W TV W HDMI Red N C455 Slide Cover W TV W O HDMI Red N C455 Slide Cover W O TV W HDMI Red N Testo caer eracner oon i cara ripper ova C340 ODD BEZEL BLACK N C340 ODD BEZEL WHITE N C355 ODD Bezel Red N esto on taro oe eto 000 coves ETA E Stand C440 STAND TOP 90201476 N C340 STAND BOTTOM 90201424 N Chapter 10 FRU lists C455 69 Speaker C340 Speaker SUMS
11. 90203392 IN C355 Front mee oaea 90203393 N C355 Rear Cover W TV W O HDMI Black C355 Rear Cover W O TV W HDMI Black E C355 Rear Cover W O TV W O HDMI Black 90203402 N C355 Rear Cover W TV W HDMI White C355 Rear Cover WTV W O HDMIWhite eozo3w0W4 N C355 Rear Cover W O TV W HDMI White C355 Rear Cover W O TV W O HDMI White ETE O wer C385 Rear Gover WO TV WMA porosa n cat sie Cover W V wo rome wee GE porra N G weovare n cat Side Gover wiv wo nomme CIN cat Side Gover w0 TV wmm CIN C355 Slide Cover W O TV W O HDMI Red S O COIE emen fn e 000 ee wre O eo rv o esoe r Tet 000 cover o a Festa 00 ato Jo n HE LEE C340 STAND TOP 90201423 N C340 STAND BOTTOM Hs CET TESEI Fon ne CIT O eo cana nor oo oreo wacker CTE 7777 CEN O es cer ri oa u Chapter 9 FRU lists C355 59 Speaker C340 Speaker SUMSANG W HOUSING 2 90201451 N C340 Speaker Kuaida W HOUSING 2 90201452 N Cables Cables C355 AUO amp CMI Converter to Panel Cable N C355 SAM Converter to Panel Cable N C355 Converter to MB cable N C355 120W DC in cable N C355 B case cable N C340 LVDS cable N C340 Webcam cable N C340 ODD SATA cable N C340 HDD SATA cable N C340 Function board cable N C340 Power board cable N C340 TV tuner Cable For F type 90201453 N C340 TV tuner Cable For IEC type 90201454 N C340 Wlan Antena N 2 M471B5773DHO YKO 2 HMT425S6AFR6A PB 2 MT8KTF
12. B CAS Card Flyer V1 0 JP B cas ith ER CAF TV cable Comector OTP toe NN LED Panel LTM200KT10 M01 M02 90400004 N M200FGE L20 90400189 N Samsung LTM200KT12 M01 M02 L01 L02 Camera Camera_WIN8 CCY M720P VC OV9712 CAM 20200086 IN Bison M720P VC 9712 NL NC CAM 20200528 Chapter 9 FRU lists C355 61 Wireless Mouse Liteon SM 8861 WW Mouse Black Liteon SM 8861 Mouse No Battery Black Liteon SM 8861 Mouse MY Black Liteon SM 8861 JP Mouse Black EA CE3 H Liteon SM 8861 2 4G Mouse No a WTE 25211017 1 icon suror246 Masson E T 319 uestes 246 Man mie E 10 o EA nn i imax S00 Uss gesture r Chicony TGR1226 2 4G touchpad BLK final 25212969 1 Chicony TGR1226 2 4G touchpad WHT final 25212970 1 Keyboard USB Keyvboard Sunrex EKB 10YA US B Silk USB KB LVT8 Primax KB4721 US B Silk USB KB LVT8 Chicony KU 1153 US B Silk USB KB LVT8 Smene am Sk USB E H Sme asus eav EN Sunrex EKB 10YA CZ SL B S USB KB LVT8 25209116 1 EME E 3 1 Sunrex EKB 10YA SW B Silk USB KB LVT8 62 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Sunrex EKB 10YA CZ SL W S USB KB LVT8 25209149 1 Sunrex EKB 10YA IN W Silk USB KB LVT8 25209050 1 Sunrex EKB 10YA LA W Silk USB KB LVT8 Sunrex EKB 10YA AR W Silk USB KB LVT8 Sunrex EKB 10YA SW W Silk USB KB LVT8 Chapter 9 FRU lists C355 63 i EXEC persr i Smere oaee suss KBD ea 1 Sunrex EKB 10YA DU B S U
13. 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 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 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 remove
14. 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 stand holder 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 stand base Refer to Removing the stand base Step 5 Remove the foot cover Refer to Removing the foot cover Step 6 Remove the four screws that secure the stand holder to the chassis then lift up the stand holder to remove it 36 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Step 7 To reattach the stand holder a Align the holes on the stand holder with mounting holes on the chassis place the stand holder back into position b Secure the stand holder to the chassis with the four screws Step 8 Line up the foot cover with mounting holes on the back of the computer then slide it back into position Step 9 Reattach the stand base Removing the middle cover Note Turn off the computer and wait 3 to 5 minutes to let it cool dow
15. TV Card ATSC card Avermedia H334 ATSC Mini TV Card uu Avermedia H339BA ATSC Mini TV Card ISDB T card Avermedia A370 ISDB T MINI PCIE TV CARD 11201894 IC B3 TV lable Japan C L R B CAS Card Flyer V1 0 JP B cas 3b ER CAF TV cable F Type F Type and Connector IEC Type IEC Type IR remote IR controller Philips Win8 IR remote controller Black 888900006 controller ee Philips Win8 IR remote controller White RF_for Japan Chicony RC 1209 54key RC FOR Win8 Chicony RG 1217 Dongle for Win8 1 11 LED Panel LG LM215WF4 TLG1 CMI M215HGE L21 AUO M215HTNO1 1 Camera Camera_WIN8 CCY M720P VC OV9712 CAM 20200086 Bison M720P VC 9712 NL NC CAM 20200528 Chapter 10 FRU lists C455 71 Liteon SM 8861 Mouse No Battery Black Liteon SM 8861 JP Mouse Black Liteon SM 8861 2 4G Mouse No Battery WTE Liteon SM 8861 2 4G Mouse MY White 25211018 1 icon S086 2 46 Moseo te EI T iii a Touchpad Touchpad Chicony TGR1226 2 4G touchpad BLK final 25212969 1 dl d Chicony TGR1226 2 4G touchpad WHT final 25212970 1 Keyboard USB Keyvboard Sunrex EKB 10YA US B Silk USB KB LVT8 Primax KB4721 US B Silk USB KB LVT8 Chicony KU 1153 US B Silk USB KB LVT8 ENTES EI H smee oam euss ear EI e Sunrex EKB 10YA CZ SL B S USB KB LVT8 25209116 1 GE A V smee asm soseen E Svece owo SSK USB kene OOOO a 7 EXEC eskuen s ENTE CEI E V EME ar 1 Saver ex6 1vAT 8 Sk USS ean amxeus 72 Len
16. To replace the WLAN 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 48 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual 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 stand base Refer to Removing the stand base Remove the foot cover Refer to Removing the foot cover Remove the optical drive Refer to Replacing the optical drive Remove the stand holder Refer to Removing the stand holder Remove the middle cover Refer to Removing the middle cover Remove the EMI cover Refer to Removing the EMI cover Step 10 Disconnect the antenna cables from the WLAN card Chapter 8 Replacing hardware 49 Step 11 Remove the screw that secures the WLAN card to the motherboard Step 12 Lift up the WLAN card to remove it from the socket H a Insert the notched end of the WLAN card into the card port on the motherboard b Secure new the WLAN card to the motherboard with the screw
17. base Step 5 Remove the foot cover Refer to Removing the foot cover Step 6 Remove the optical drive Refer to Replacing the optical drive Step 7 Remove the stand holder Refer to Removing the stand holder Step 8 Remove the middle cover Refer to Removing the middle cover Step 9 Remove the EMI cover Refer to Removing the EMI cover 46 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Step 10 Disconnect the antenna cable from the TV Tuner card 47 Chapter 8 Replacing hardware Step 11 Remove the screw that secures the TV Tuner card to the motherboard Step 12 Pull the TV Tuner card upward to remove it from the card port on the motherboard FJ Step 13 To install the new TV Tuner card a Insert the notched end of the TV Tuner card into the card port on the motherboard b Secure new the TV Tuner card to the motherboard with the screw c Connect the antenna cable to the new TV Tuner card Step 14 Reattach the EMI cover middle cover optical drive stand holder foot cover and stand base Replacing the WLAN card Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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
18. c Connect the antenna cables to the new WLAN card Step 14 Reattach the EMI cover middle cover optical drive stand holder foot cover and stand base Replacing the front control board Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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 replace the front control 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 50 Lenovo C355 C455 All In One ComputerHardware 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 stand base Refer to Removing the stand base Step 5 Remove the foot cover Refer to Removing the foot cover Step 6 Remove the optical drive Refer to Replacing the optical drive Step 7 Remove the stand holder Refer to Removing the stand holder Step 8 Remove the middle cover Refer to Remo
19. th j a 1 i m7 WOES 077 UD 2 Headphone connector 6 Power button 3 Microphone connector 7 Optical drive eject button 4 USB connector 8 Optical drive Attention Do not insert 3 inch discs into the optical drive 22 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Rear view The following illustration shows the location of connectors and components on the rear of the computer 1 TV tuner connector selected models only 2 connectors 6 USB connector for Japan 2 TV tuner connector selected models only 2 connectors 7 HDMI out connector selected models only for Japan Chapter 7 Locating connectors controls and components 23 Hardware components The following illustration shows the components that make up your computer 24 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Identifying parts on the motherboard The motherboard sometimes called the planar or system board is the main circuit board in your computer It provides basic computing functions and supports a variety of devices that are factory installed or that you can install later The following illustration shows the location of connectors and components on the front of the motherboard
20. that are connected to the computer Refer to Left and right views and Rear view for help with locating the various connectors Remove the stand base Refer to Removing the stand base Remove the foot cover Refer to Removing the foot cover 34 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Step 6 Push the optical drive pin downward to push out the optical drive as shown PA Step 7 Step 8 Step 9 Push a small iron stick paper clip into the small hole on the optical drive cover so that the disk springs out as shown Remove the 2 screws that secure the optical drive to the metal bracket Use a small flat head screwdriver to press and push out the pins that secure the cover to the disk BE Chapter 8 Replacing hardware 35 Step 10 Separate the cover from the defective optical drive Step 11 To install the new optical drive a Align the new optical drive with the cover and then push the cover back into position b Screw the metal bracket back onto the new optical drive c Slide the new optical drive into the drive bay Step 12 Reattach the foot cover and stand base Removing the stand holder Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover Note It may be helpful to place the computer face down on a soft flat surface for this procedure
21. 25664HZ 1G6M1 2 Elp R J2108EDBG GN F 2GB D3L 16008 MEMORY 13 GB 4GB M471B5273DHO0 YKO 1100637 HMT451S6AFR8A PB 1100638 MT8KTF51264HZ 1G6J1 1100639 Elp_R J4208EBBG GN F 4GB D3L 16008 MEMORY 1100640 I2 Mic S DIQVG 4GB D3L 1600S MEMORY 1100672 6GB 2G 4G M471B5773DHO YKO 1100642 M471B5273DHO YKO 1100637 8GB 2 4G GB O es 60 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual IET AE SGT Pharaoh aK STSOGDwO02So0G HOD rezore 2 wo xL1000s WOIGEZEXoBRKKAD TB Poon rozar 2 SGT Grenade BP STIOGOOMOOO ITBHODAM ve200008 2 smen SATAGG 7 2K Grenada eP rs roza SGT Grenade BP ST2000DM0O aTBHODAM HE 3 5inch SATA6G 7 2K Grenada BP 1 5 2TB 16200529 2 Tray in Rambo HLDS GT80N Slim SATA Rambo Jb zc H d LH 25209015 2 ue PLDS DS 8A9SH Slim Tray Rambo M 4x LH 25209016 2 TSST SN 208DB Slim Rambo 3l Zc M iR LH 25209014 2 PSU 90W power DELTA ADP 90XD BC 90W common adapter amp N Liteon PA 1900 721A 90w common adapter 120W power DELTA ADP 120ZB BBHT common 120W adapter Liteon PA 1121 04LB 120w common adapter N 14 Wi Fi card CBT AR9485 11n HMC WiFi card 11200354 UEM ua LTN RTL8188EE 11n HMC WiFi card 15 DVB T card Avermedia H334 DVB T Mini TV Card 11201071 E Avermedia H339BB DVB T Mini TV Card 11200290 N ATSC card Avermedia H334 ATSC Mini TV Card 11201072 N Avermedia H339BA ATSC Mini TV Card 11200291 N ISDB T card Avermedia A370 ISDB T MINI PCIE TV CARD IC B3 TV lable_Japan C L R 31044061
22. 3 15 16 17 19 19 19 20 20 21 Chapter 8 eee hardware General information Sais Replacing the keyboard and mouse Replacing the adapter Removing the stand base Removing the foot cover Replacing a memory module Replacing the hard disk drive Replacing the optical drive Removing the stand holder Removing the middle cover Replacing the converter board Replacing the camera Removing the EMI cover Replacing the rear I O module Replacing the speaker system Replacing the system fan Replacing the heat sink Replacing the TV tuner card Replacing the WLAN card Replacing the front control board Replacing the power switch board Replacing the motherboard Replacing the LED panel Chapter 9 FRU lists C355 Chapter 10 FRU lists C455 Chapter 11 General information Additional Service Information 27 27 28 28 30 30 31 33 34 36 37 38 39 40 41 43 44 45 46 48 50 51 52 54 57 67 77 77 iV Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Chapter 1 About this manual This manual contains service and reference information for Lenovo C355 and C455 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
23. 6KPa to 106KPa Electrical input Input voltage 90V 264V AC Input frequency 47Hz 63Hz O Copyright Lenovo 2013 9 10 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Chapter 4 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 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 e f the computer hangs and no error is displayed continue at step 7 7 If the test s
24. ANG W HOUSING 2 90201451 C340 Speaker Kuaida W HOUSING 2 90201452 Cables C355 AUO amp CMI Converter to Panel Cable C455 LG Converter to Panel Cable C355 Converter to MB cable C355 120W DC in cable C355 B case cable C340 LVDS cable C340 Webcam cable C340 ODD SATA cable C340 HDD SATA cable C340 Function board cable C340 Power board cable C340 TV tuner Cable For F type C340 TV tuner Cable For IEC type 90201454 C340 Wlan Antena 90201425 2 M471B5773DH0 YKO HMT425S6AFR6A PB MT8KTF25664HZ 1G6M1 Elp_R J2108EDBG GN F 2GB D3L 1600S MEMORY Mic S D9PFJ 2GB D3L 1600S MEMORY 1100683 13 GB 4GB M471B5273DHO0 YKO 1100637 HMT451S6AFR8A PB 1100638 MT8KTF51264HZ 1G6J1 1100639 Elp_R J4208EBBG GN F 4GB D3L 1600S MEMORY 1100640 I2 Mic_S DIQVG 4GB D3L 1600S MEMORY 1100672 6GB 2G 4G M471B5773DHO YKO 1100642 M471B5273DHO YKO 1100637 8GB 2 4G GB 70 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual 3 5inch SATA6G 7 2K Grenada BP 1 5 2TB Tray in Rambo HLDS GT80N Slim SATA Rambo 3i c SHS LH Men PLDS DS 8A9SH Slim Tray RamboJE RHS LH TSST SN 208DB Slim Rambo Jt HR JE RIR LH PSU 90W power DELTA ADP 90XD BC 90W common adapter Liteon PA 1900 72IA 90w common adapter 120W power DELTA ADP 120ZB BBHT common 120W adapter Liteon PA 1121 04LB 120w common adapter 14 WLAN CBT AR9485 11n HMC WiFi card 11200354 UMEN LTN RTL8188EE 11n HMC WiFi card 15 DVB T card Avermedia H334 DVB T Mini TV Card pum Avermedia H339BB DVB T Mini
25. 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 views and Rear view for help with locating the various connectors Step 4 Remove the foot base Refer to Removing the foot base Step 5 Lift up the stand holder then slide out the foot cover as shown Step 6 To reattach the foot cover a Lift up the stand holder b Line up the foot cover with mounting holes on the back of the computer then slide it back into position Replacing a memory module Attention Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover Chapter 8 Replacing hardware 31 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 Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Remove any media disks CDs 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 views and Rear vie
26. 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 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 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 Do not use worn or broken tools and testers Never assume that power has been discon
27. SB KB LVT8 25209139 1 Sunrex EKB 10YA US W Silk USB KB LVT8 25209345 1 Primax KB4721 US W Silk USB KB LVT8 ENTES Kum pesar EXCESO TS asooa8 1 EE E r EEES E 17 0 EEC EN CE E 0 ESA E IEA e H Teon sessen zae resas mxeur r G zaera eo 1 EAS E 31H G E v CEE EN icon scesero 2a resme O oor 7 Liteon SK 8861 KR 2 4G KB Black8 25209098 1 Liteon SK 8861 JP 2 4G KB Black8 25209199 1 IEA peer G EN Liteon SK 8861 BE EN 2 4G KB Black8 25209202 1 Liteon SK 8861 DU 2 4G KB Black8 25209203 1 Sunrex EKB 10YA US RED Silk USB KB LVT8 25210750 1 Wireless Keyboard Liteon SK 8861 US 2 4G KB WhiteB Liteon SK 8861 US MY 2 4G KB White8 Liteon SK 8861 CS SK 2 4G KB White8 64 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual icon SKSGGTUSIN2AGKE Bacw EOI reon skemo za eee ECT EE EOI l reon skas za emee sei r reon skes 4o eee sees T Liteon SK M RR 2 4G KB White8 Liteon SK ee 2 4G KB White8 Liteon SK 88610L 24G KB White8 Liteon SK 8861 FR 2 4G KB Whiteg ESAS 2 4G KB White8 Liteon SK eee 2 4G KB White8 25211007 1 Liteon SK M E E aaa 2 4G KB White8 25211008 1 Liteon SK 8861 BG 24G KB Whiteg 1 Liteon SK 8861 KR 2 4G KB White8 Liteon SK 8861 4P 24G KB Whiteg EN Liteon SK 8861 PT 2 4G KB Whiteg Liteon SK 8861 US EU 2 4G KB White8 esaeran os tupe mecs EH Chapter 9 FRU lists C355 65
28. 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 O Copyright Lenovo 2013 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 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
29. ace 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 replace the heat sink Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 Step 12 Step 13 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 stand base Refer to Removing the stand base Remove the foot cover Refer to Removing the foot cover Remove the optical drive Refer to Replacing the optical drive Remove the stand holder Refer to Removing the stand holder Remove the middle cover Refer to Removing the middle cover Remove the EMI cover Refer to Removing the EMI cover Remove the sealing tape between the system fan and heat sink Remove the screws that secure the heat sink to the motherboard and chassis Remove the heat sink by lifting it up Attention Place the heat sink upside down on a flat surface to prevent thermal grease from contaminating other co
30. 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 stand base Refer to Removing the stand base Step 5 Remove the foot cover Refer to Removing the foot cover Step 6 Remove the optical drive Refer to Replacing the optical drive Step 7 Remove the stand holder Refer to Removing the stand holder Step 8 Remove the middle cover Refer to Removing the middle cover Step 9 Remove the EMI cover Refer to Removing the EMI cover Step 10 Remove the screw that secures power switch board to the front bezel Step 11 Disconnect the data cable from the power switch board Step 12 Lift up the power switch board to remove it Step 13 To install the power switch board a Line up the hole on the new power switch board with the mounting hole on the chassis then place it into position b Secure the power switch board with the screw c Connect the power cable to the new power switch board Step 14 Reattach the EMI cover middle cover optical drive stand holder foot cover and stand base Replacing the motherboard Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover Note It may be helpf
31. d 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 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 e 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 gro
32. der Step 8 Remove the middle cover Refer to Removing the middle cover Step 9 Remove the EMI cover Refer to Removing the EMI cover Step 10 Disconnect the speaker cables from the connector on the motherboard Step 11 Remove the four screws that secure the speaker system to the chassis then lift up the speaker system to remove it Step 12 To install the new speaker system a Place the new speaker system into position then secure it with four screws b Connect the new speaker cables to the connector on the motherboard Step 13 Reattach the EMI cover middle cover optical drive stand holder foot cover and stand base Chapter 8 Replacing hardware 43 Replacing the system fan Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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 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 comput
33. disconnect cables as described in the following table when installing moving or opening covers on this product or attached devices 6 Lenovo C355 C455 All In One ComputerHardware 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 to outlet Remove all cables from devices Turn device ON CAUTION When replacing the lithium battery use only Part Number 45C1566 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 A CAUTION When laser products such as CD ROMs DVD ROM drives fiber optic devices or transmitters are installed note the following e 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 haza
34. 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 stand base Refer to Removing the stand base Step 5 Remove the foot cover Refer to Removing the foot cover Chapter 8 Replacing hardware 41 Step 6 Remove the optical drive Refer to Replacing the optical drive Step 7 Remove the stand holder Refer to Removing the stand holder Step 8 Remove the middle cover Refer to Removing the middle cover Step 9 Remove the EMI cover Refer to Removing the EMI cover Step 10 Remove the three screws that secure the rear I O module to the motherboard El and lift it up gently H Step 11 Disconnect the power cable from the motherboard and the TV antenna cable s from the TV tuner card Step 12 Remove the two screws that secure rear I O module to the bracket EM loose the rear I O module then slide it out H Step 13 To install the new rear I O module a Line up the new I O module with bracket then insert the rear I O module into position b Secure the rear I O module to the brac
35. e keyboard Step 1 Remove any media disks CDs or memory cards from the drives shut down the computer and turn off all attached devices Step 2 Unplug all power cords from electrical outlets Step 3 Locate the connector for the keyboard Refer to Side view of the computer and Rear view of the computer gt S Step 4 Disconnect the defective keyboard cable from the computer and connect the new keyboard cable to the same connector Step 5 The mouse can be replaced using the same method Replacing the adapter Attention Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover Step 1 Remove any media disks CDs or memory cards from the drives shut down the operating system and turn off the computer and all attached devices 28 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Step 2 Disconnect the adapter cable from the computer then unplug the power cord from electrical outlet Ej Step 3 Connect the new adapter as shown HA Chapter 8 Replacing hardware 29 Removing the stand base Attention Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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 t
36. 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 Chapter 5 Using the Setup Utility 15 Select ATA Device 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 then 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 b Select IDE AHCI Mode Device driver support is required for ACHI Depending on how the hard disk image was installed changing this setting may prevent the system from booting
37. er Refer to Left and right view and Rear view for help with locating the various connectors Step 4 Remove the stand base Refer to Removing the stand base Step 5 Remove the foot cover Refer to Removing the foot cover Step 6 Remove the optical drive Refer to Replacing the optical drive Step 7 Remove the stand holder Refer to Removing the stand holder Step 8 Remove the middle cover Refer to Removing the middle cover Step 9 Remove the EMI cover Refer to Removing the EMI cover Step 10 Remove the sealing tape between the system fan and heat sink Step 11 Remove the three screws that secure the system fan to the chassis Step 12 Disconnect the power cable from the motherboard Step 13 Lift up the system fan to remove it Step 14 To install the new system fan a Place the new system fan into position and then secure it to the chassis with three screws b Connect the system fan power cable to the connector on the motherboard c Use the sealing tape to seal the gap in between the system fan and heat sink Step 15 Reattach the EMI cover middle cover optical drive stand holder foot cover and stand base 44 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Replacing the heat sink Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover Note It may be helpful to place the computer face down on a soft flat surf
38. for Lenovo C355 All In One desktop computer 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 slightly more difficult to replace e N identifies parts that are not to be replaced by the customer ID Copyright Lenovo 2013 57 5 5 5 I 5 5 5 5 5 N N System Fan C355 Delta FAN N C355 AVC FAN C355 SUNON FAN N Heatsink C355 AVC UMA thermal 90203383 N C355 Coolermaster UMA thermal 90203384 N C355 AVO DIS thermal 90203385 N C355 Coolermaster DIS thermal 90203386 N Rear I O module C355 Rear IO Board W GPU W TV W HDMI 90003803 N C355 Rear IO Board W GPU W O TV W HDMI 90003804 N C355 Rear IO Board W GPU W TV W O HDMI 90003805 N C355 Rear IO Board W GPU W O TV W O HDMI 90003806 N B540 B Cas Board 90000267 N C340 POWER LED Board W IR 90000630 N C340 POWER LED Board W O IR 90001136 N C340 Function Board 90000631 N 16 Converter Board C355 Converter 90003815 N C355 NOK UMA CPU A4 5000 W USB3 0 MB 90004012 N C355 NOK GPU 1G CPU E2 3000 W USB3 0 MB 90004013 N 7 Bu B CAS card reader 58 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual 12 Front bezel C355 Front Bezel Black 90203391 N C355 Front Bezel White
39. istrator 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 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 Re type the password to confirm then press the Enter key If you typed the password correctly the password will be installed 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 Re type the password to confirm the new password If you typed the new password correctly the new password will be installed A Setup Noticed confirming that changes have been saved will be displayed To delete a previously set Administrator Password do the following 1 From the Security
40. itions 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 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 O Copyright Lenovo 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
41. ket with the two screws c Connect the power cable to the motherboard and the TV antenna cable s to the TV tuner card Step 14 Reattach the EMI cover middle cover optical drive stand holder foot cover and stand base 42 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Replacing the speaker system Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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 replace the speaker system 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 stand base Refer to Removing the stand base Step 5 Remove the foot cover Refer to Removing the foot cover Step 6 Remove the optical drive Refer to Replacing the optical drive Step 7 Remove the stand holder Refer to Removing the stand hol
42. l 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 replace the LED panel 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 stand base Refer to Removing the stand base 54 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 Step 12 Step 13 Step 14 Step 15 Step 16 Step 17 Step 18 Step 19 Remove the foot cover Refer to Removing the foot cover Remove the memory modules Refer to Replacing a memory module Remove the optical drive Refer to Replacing the optical drive Remove the stand holder Refer to Removing the stand holder Remove the middle cover Refer to Removing the middle cover Remove the EMI cover Refer to Removing the EMI cover Remove the speaker system Refer to Replacing the speaker s
43. lenovo Lenovo C355 C455 All In One Computer Hardware Maintenance Manual deaideaideaCentreidea Machine Types 10138 F0A2 C355 10139 FOA3 C455 lenovo Lenovo C355 C455 All In One Computer Hardware Maintenance Manual Machine Types 10138 FOA2 C355 10139 FOA3 C455 Second Edition July 2013 31st O Copyright Lenovo 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 Exiting the Lenovo BIOS Setup Utility program Chapter 6 Symptom to FRU Index Hard disk drive boot error Power Supply Problems POST error codes Undetermined problems Chapter 7 Locating connectors controls and components O Copyright Lenovo 2013 uh aw wo 0 OOA o 11 13 13 13 1
44. m 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 Re type the password to confirm the new password If you typed the new password correctly the new password will be installed A Setup Noticed confirming that changes have been saved will be displayed To delete a previously set Power On Password do the following 1 From the Security menu select Set Power On Password and press the Enter key 2 The password dialog box will be displayed Type the current password and press the Enter key 3 To delete the Power On Password leave each new password line item blank then press Enter A Setup Notice confirming that changes have been saved will be displayed 4 Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 5 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 devices USB Functions Select whether to enable or disable USB Universal Serial Bus functions If the functions are disabled no USB devices can be used SATA Mode When this feature is set to Disabled all devices connected to the SATA connectors e g hard disk drives or the optical disk drive are disabled and cannot be accessed Onboard Audio Controller Select whether to
45. menu select Set Administrator Password and press the Enter key 2 The password dialog box will be displayed Type the current password and press the Enter key 3 To delete an Administrator Password leave each new password line item blank then press the Enter key A Setup Notice confirming that changes have been saved will be displayed 4 Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 5 Select Save changes and Exit from the menu 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 14 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual 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 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 password then press the Enter key 4 Re type the password to confirm If you typed the password correctly the password will be installed 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 Fro
46. mponents Attention Use an alcohol pad to wipe the thermal grease off the CPU To install the new heat sink a Line up the new heat sink with mounting holes on the motherboard then place it into position b Follow the numbers printed on the new heat sink to secure it in order using the screws Chapter 8 Replacing hardware 45 c Use the sealing tape to seal the gap in between the system fan and heat sink Step 14 Reattach the EMI cover middle cover optical drive stand holder foot cover and stand base Replacing the TV tuner card Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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 replace the TV tuner 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 stand base Refer to Removing the stand
47. n LAN This feature allows LAN adapter card to wake the System O Copyright Lenovo 2013 77
48. n before removing the 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 middle 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 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 stand base Refer to Removing the stand base Step 5 Remove the foot cover Refer to Removing the foot cover Step 6 Remove the optical drive Refer to Replacing the optical drive Step 7 Remove the stand holder Refer to Removing the stand holder Step 8 Remove the seven screws that secure the middle cover to the chassis then lift up the middle cover from the left side optical drive side to remove the middle cover Chapter 8 Replacing hardware 37 Step 9 To reattach the middle cover a Line up the middle cover with chassis then place the middle cover back b Secure the middle cover to the chassis with the seven screws
49. n remove the two screws that secure the converter board to the chassis Step 10 Lift up the converter board to remove it Step 11 To install the new converter board a Line up the holes on the new converter board with the mounting holes on the chassis and secure it with the two screws b Connect the two cables to the new converter board Step 12 Reattach the middle cover optical drive stand holder foot cover and stand base Replacing the camera Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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 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 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 stand base Refer to Removing the stand base Step 5 Remove the foot cover Refer to Removing the foot cover Step 6
50. nected 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 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 C355 C455 All In One ComputerHardware 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
51. nnect 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 stand base Refer to Removing the stand base Step 5 Remove the foot cover Refer to Removing the foot cover Step 6 Remove the optical drive Refer to Replacing the optical drive Step 7 Remove the stand holder Refer to Removing the stand holder Step 8 Remove the middle cover Refer to Removing the middle cover Step 9 Remove the three screws that secure the EMI cover to the chassis El and then lift it up H U Step 10 To reattach the EMI cover a Line up the holes on the EMI cover with mounting holes on the chassis then place EMI cover back into position b Secure the EMI cover to the chassis with three screws Step 11 Reattach the middle cover optical drive stand holder foot cover and stand base Replacing the rear I O module Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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 replace the rear I O module Step 1 Remove any media
52. ords 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 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 a strong password use 7 16 characters and a mix of letters and numbers e Do not use your name or your user name 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 O Copyright Lenovo 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 Admin
53. ouch screen from scratches or other damage Step 1 Remove any media disks CDs 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 views and Rear view for help with locating the various connectors Step 4 Twist the hand screw ring counter clockwise until the base comes loose to release the stand base from the stand holder H Step 5 Slide the stand base out from the holder then put it aside H Step 6 Refer to Installing the computer stand to reinstall the stand base Removing the foot cover Attention Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover 30 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual 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 Step 1 Remove any media disks CDs 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
54. ove the heat sink Refer to Replacing the heat sink Remove the CPU Refer to Replacing the CPU For models C340 and C440 only Remove the TV Tuner card Refer to Replacing the TV tuner card Remove the WLAN card Refer to Replacing the WLAN card Unplug the following cables from connectors on the motherboard Power switch board cable e Speaker system cable e Front control board cable Converter cable e Camera cable e System fan power cable Hard disk drive power cable e Hard disk drive SATA cable Black Optical drive SATA cable Red e LED panel data cable Chapter 8 Replacing hardware 53 Step 17 Remove the five screws that secure the motherboard to the chassis and lift the motherboard up to remove it T e8 ca Step 18 To install the new motherboard a Line up the holes on the new motherboard with the mounting holes chassis and place the new motherboard into position b Usethe screws to secure the new motherboard to the chassis c Connect all the cables to the new motherboard Step 19 Install the following parts to the new motherboard e WLAN card e TV Tuner card e CPU e Heat sink e Rear I O module e Memory module Step 20 Reattach the EMI cover middle cover optical drive stand holder foot cover and stand base Replacing the LED panel Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover Note It may be helpfu
55. ovo C355 C455 All In One ComputerHardware Maintenance Manual Sunrex EKB 10YA CZ SL W S USB KB LVT8 25209149 1 umet vA sU O E 1 EXEC IO E t Sunrex EKB 10YA HB W Silk USB KB LVT8 25209162 1 Sunrex EKB 10YA FR W Silk USB KB LVT8 25209163 1 EXTERNO E 7 ECO E 0 MES E 178 Liteon SK 8861 CS SK 2 4G KB Black8 25209179 1 Chapter 10 FRU lists C455 73 sex ES OYAPT eskus keane ar 1 Saro ERE TOYABE EN SUS keav es i Sunrex EKB 10YA DU B S USB KB LVT8 25209139 1 Sunrex EKB 10YA US W Silk USB KB LVT8 25209145 1 Primax KB4721 US W Silk USB KB LVT8 ENTES E 770 1 Saro TOA WES Kara rr 1 EAS EN v ERES 777770 1 teon sceso 24e kesa aoea Ten sesei ekse a t Teor ES zae ke Bee o V IEA ser V Juenskmemiisemans esate i G O E T ieor skssr eR aa eB see V Teor 838016 246 E i CEE amewe T EAT 77700 T Liteon SK 8861 2 4G KB Black8 25209198 1 Liteon SK 8861 JP 2 4G KB Black8 25209199 1 IEA 7 G 77710 Liteon SK 8861 BE EN 2 4G KB Black8 25209202 1 Liteon SK 8861 DU 2 4G KB Black8 25209203 1 Sunrex EKB O a RED Silk USB KB LVT8 ESTE Wireless Keyboard Liteon SK 8861 US 2 4G KB Whiteg Liteon SK 8861 CS SK 2 4G KB White8 74 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual METI ECN MET ECN MEE ECN Liso SEGS Nord 24a esee rs T ieaS aaa asa sei T MET EN
56. rdous radiation exposure P 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 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 1 VU mb A CAUTION Do not place any object weighing more than 82 kg 180 Ibs on top of rack mounted devices 8 Lenovo C355 C455 All In One ComputerHardware 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 C355 C455 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 8
57. ses 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 Undetermined problems on page 20 Notes e f you have both an error message and an incorrect audio response diagnose the error message first e f 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 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 be caused by the following E FRA 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
58. th feet Lift slowly Never move suddenly or twist when you attempt to lift gt OO N a 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 Ib 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 e Insert the ends of your necktie or scarf inside clothing or fasten it with a non conductive 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 e Wear safety glasses when you are hammering drilling soldering cutting wire attaching springs using solvents or working in any other cond
59. tops and you cannot continue replace the last device tested Copyright Lenovo 2013 11 12 Lenovo C355 C455 All In One ComputerHardware 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 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 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 passw
60. ul 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 52 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual To replace the motherboard Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Step 9 Step 10 Step 11 Step 12 Step 13 Step 14 Step 15 Step 16 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 stand base Refer to Removing the stand base Remove the foot cover Refer to Removing the foot cover Remove the memory modules Refer to Replacing a memory module Remove the optical drive Refer to Replacing the optical drive Remove the stand holder Refer to Removing the stand holder Remove the middle cover Refer to Removing the middle cover Remove the EMI cover Refer to Removing the EMI cover Remove the rear I O module Refer to Replacing the rear I O module Rem
61. und 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 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 AA DANGER Electrical current from power telephone and communication cables is hazardous To avoid a shock hazard e 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 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 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
62. vice up or down Use the lt x gt key to exclude the device from or include the device in the boot sequence Return to the Lenovo BIOS Setup Utility program menu and select the Exit option 6 Select Save changes and Exit from the menu 16 Notes Lenovo C355 C455 All In One ComputerHardware Maintenance Manual 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 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 C355 C455 All In One ComputerHardware Maintenance Manual Chapter 6 Symptom to FRU Index The Symptom to FRU index lists error symptoms and possible cau
63. ving the middle cover Step 9 Remove the EMI cover Refer to Removing the EMI cover Step 10 Remove the speaker system Refer to Replacing the speaker system Step 11 Push the pin that locks the front control board then slide it out Step 12 Remove the two screws that secure the front control board to the front bezel Step 13 Disconnect the data cable from the front control board then lift up the front control board Step 14 To install the new front control board a Connect the data cable to the new front control board b Line up the new front control board with the front bezel then place it into position c Secure the front control board to the front bezel with the two screws Step 15 Reattach the speaker system EMI cover middle cover optical drive stand holder foot cover and stand base Replacing the power switch board Note Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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 replace the power switch board Chapter 8 Replacing hardware 51 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
64. w for help with locating the various connectors Remove the stand base Refer to Removing the stand base Remove the foot cover Refer to Removing the foot cover Push out the latches on both sides of the memory socket to release the memory module H and gently pull the memory module upward to remove it from its socket El All of the memory modules can be removed using the same procedure To install a memory module a Align the new memory module with the memory socket then insert it and push down on the top edge Make sure the latches lock the memory module in place Reattach the foot cover and stand base 32 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Replacing the hard disk drive Attention Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the 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 Step 1 Remove any media disks CDs 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
65. ystem Remove the rear I O module Refer to Replacing the rear I O module Remove the system fan Refer to Replacing the system fan Remove the heat sink Refer to Replacing the heat sink Disconnect the following cables from connectors on the motherboard e WLAN antenna cables Power switch board e Front control board cable e Camera cable e LED panel data cable Remove the 9 screws that secure the chassis to the front bezel Remove the four screws that secure the LED panel to the chassis and then disconnect the power cable from the LED panel Lift up the chassis to separate the LED panel from the chassis To install the new the LED panel a Line up the chassis with new LED panel and then place it into position b Secure the LED panel to the chassis with the four screws c Connect the converter cable to the new LED panel Chapter 8 Replacing hardware 55 d Line up the chassis and new LED panel with the front bezel and then place it into position e Secure the chassis to the front bezel with the nine screws f Connect all the cables to the connectors on the motherboard Step 20 Reattach the heat sink system fan rear I O module speaker system EMI cover middle cover optical drive stand holder foot cover and stand base 56 Lenovo C355 C455 All In One ComputerHardware Maintenance Manual Chapter 9 FRU lists C355 This chapter lists the information on the field replaceable units FRUs

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