Lenovo A520 IdeaCentre A520 All-In-One PC Hardware Maintenance Manual
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- Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 1
IdeaCentre A520 All-In-One PC Hardware Maintenance Manual ideaideaideaCentreidea Machine Types: 6597/10106 [A520] - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 2
- Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 3
IdeaCentre A520 All-In-One PC Hardware Maintenance Manual Machine Types: 6597/10106 [A520] - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 4
First Edition (August 2012)25th © Copyright Lenovo 2012. 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 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 5
16 Exiting the Lenovo BIOS Setup Utility program . . 17 Chapter 6. Symptom-to-FRU Index . . 19 Hard disk drive boot error 19 Power Supply Problems 19 POST error codes 20 Undetermined problems 20 Chapter 7. Locating connectors, controls and components 21 Chapter 8. Replacing hardware . . . . 27 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 6
iv IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 7
manual This manual contains service and reference information for IdeaCentre A520 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 this manual before following any of the instructions. - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 8
2 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 9
are servicing the computer. • Keep your tool case away from areas that people may walk through to ensure no-one After service, reinstall all safety shields, guards, labels, and ground wires. Replace any instructed otherwise in the installation and configuration procedures. © Copyright Lenovo 2012 3 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 10
power supplies - Removing or installing Field Replaceable Units (FRUs) • Before you start very high voltages; these instructions are in the safety touching a live circuit can cause personal injury and damage to the computer. • Do not service IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 11
to protect users and service personnel from injury. This guide addresses only those items. can continue without first resolving the problem. Consider the following items and the are all at the same charge. Notes: 1. Use product-specific ESD procedures when they exceed the requirements noted here. 2. - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 12
the specific service 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 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 13
from connectors. 4. Remove all cables from devices. 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 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 14
one power cord. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source. 2 1 CAUTION: Do not place any object weighing more than 82 kg (180 lbs.) on top of rack-mounted devices. 8 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 15
computer models covered by this manual. Specifications This section lists the physical specifications for your computer. This section lists the physical specifications for your computer. Type IdeaCentre A520 This section lists the physical specifications. Environment Air temperature: Operating: 10 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 16
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If one of the following happens, follow the instruction given: • If the computer displays a POST error, go to "POST error codes". • If 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 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 18
12 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 19
turn on the computer. When the Lenovo BIOS Setup Utility program is displayed, release 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 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 20
Enter key. A Setup Notice will be displayed confirming that your changes have been saved. 5. Return to the Lenovo BIOS Setup Utility program menu and select the Exit option. 6. Select Save Changes and Exit from the menu. Power-On Password 14 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 21
correctly, the password will be installed. 5. Return to the Lenovo BIOS Setup Utility program menu and select the Exit option. 6. 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 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 22
driver support is required for AHCI. Depending on how the hard disk image was installed, changing this setting may prevent the system from booting. 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 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 23
device in the boot sequence. 5. Return to the Lenovo BIOS Setup Utility program one of the following: • If you want to save the new settings, select Save Changes and Exit from the menu. When the Save & reset window shows, select the Yes button, and then press the Enter key to exit the Lenovo BIOS - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 24
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an operating system on the boot drive. 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. Replace the hard disk drive. Power Supply Problems Follow these procedures if you suspect - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 26
e. 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. If all devices and components have been removed and the problem continues, replace the system board. 20 IdeaCentre A520 All-In-One PCHardware - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 27
in camera 3. Built-in microphone (selected models only) 4. Power indicator 5. Hard disk drive indicator 6. Bluetooth status indicator 7. Wi-Fi status indicator 8. HDMI-in indicator 9. Monitor On/Off 17 16 9 10 11 12 13 14 15 10. PC mode/HDMI-in/AV-in switch 11. Novo Vision button 12. Volume down 13 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 28
2. USB 3.0 connector 3. HDMI-in connector (selected models only) 4. HDMI-out connector 5. Optical drive eject button 6. Optical drive 7. Power button 8. Anti-scratch protector Attention: Do not insert 3-inch discs into the optical drive. 22 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 29
the rear of the computer. 123 4 1. TV tuner connector (selected models only) 2. Headphone connector 3. Microphone connector 4. USB 3.0 connector 5 6 78 5. USB 2.0 connectors (2) 6. Power connector 7. Ethernet connector (RJ45) 8. Security cable slot Chapter 7. Locating connectors, controls and - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 30
Power switch board 18. Front function board 19. Battery 20. Solid state disk 21. TV-tuner card 22. Glass 23. Panel frame 24. LED panel 25. Middle frame 26. Rear cover 27. Rear cover deco 28. Touch control board 29. Converter 30. Heat-sink 24 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 31
functions and supports a variety USB 3.0 connector 11. TV jack 1 12. TV jack 2 (Japan only) 13. Card reader 14. Microphone connector 15. Headphone connector 16. Optical drive eject button connector 17. Speaker connector 18. Optical drive connector 19. Solid state disk connector 20. Hard disk drive - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 32
The following illustration shows the location of connectors and components on the back of the motherboard. 23. TV-Tuner card connector 24. Battery 26 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 33
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 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 34
To replace the power adapter: 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. Locate the connector for the power cord. Refer to "Rear view". 28 IdeaCentre A520 All-In-One - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 35
Step 3. Disconnect the failing power adapter from the computer. Step 4. To install the new power adapter: a. Connect the new power adapter to the same connector. Chapter 8. Replacing hardware 29 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 36
computer face-down on a soft flat surface for this procedure. Lenovo recommends that you use a blanket, towel, or other soft media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 37
computer face-down on a soft flat surface, then secure the base cover to the base with the 7 screws. c. Return the computer to an upright position. Replacing the hard disk drive Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover. To - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 38
data and power cables to the new hard disk drive and to the connectors on the motherboard. Step 10. Reattach the base cover and secure it with the screws. Replacing a memory module Attention: Turn off . Refer to "Removing the base cover". 32 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 39
and wait 3 to 5 minutes to let it cool down before removing the base cover. To replace the system fan: 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 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 40
removing the base cover. To replace the heat-sink: 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 the system fan. Refer to "Replacing the system fan". 34 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 41
and wait 3 to 5 minutes to let it cool down before removing the base cover. To replace the CPU Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. 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 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 42
the tabs in the microprocessor socket. Important: To avoid damaging the microprocessor contacts, keep the microprocessor completely level while installing it into the socket. 36 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 43
0.03 ml (3 tick marks on the grease syringe). Step 14. Reattach the system fan, heat-sink, and base cover, then secure them with the screws. Replacing the optical drive Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover. To - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 44
3 screws that secure the optical drive to the motherboard and lift the optical drive up to remove it. Step 7. Remove the 4 screws that secure the optical drive to the bracket and disconnect the data connector from the rear of optical drive. 38 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 45
wait 3 to 5 minutes to let it cool down before removing the base cover. To replace the solid state disk: 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 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 46
the solid state disk. Refer to "Replacing the solid state disk". Step 12. Remove all the cables connected to the motherboard. Step 13. Remove the 4 screws that secure the speakers, then detach them from the chassis and put them aside. 40 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 47
. Disconnect the antenna cable(s) from the TV-Tuner card. Step 17. Pull the TV-Tuner card upward to remove it from the card port. Chapter 8. Replacing hardware 41 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 48
the solid state disk, optical drive, CPU, heat-sink, system fan, memory module, and hard disk drive to the new motherboard. g. Connect all the cables to the new motherboard. Step 20. Reattach the base cover and secure it with the screws. 42 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 49
. Refer to "Removing the base cover". Step 5. Remove the hard disk drive. Refer to "Replacing the hard disk drive". Step 6. Remove the optical drive. Refer to "Replacing the optical drive". Step 7. Remove the system fan. Refer to "Replacing the system fan". Step 8. Remove the heat-sink. Refer to - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 50
fan". Step 8. Remove the heat-sink. Refer to "Replacing the heat-sink". Step 9. Remove all the cables connected to the motherboard. Step 10. Remove the 4 screws that secure the speakers, then detach them from the chassis and put them aside. 44 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 51
holes on the chassis and secure the motherboard to the chassis with the 7 screws. Step 17. Reattach the speaker system, optical drive, heat-sink, system fan, and hard disk drive to the motherboard. Step 18. Reconnect all the cables to the motherboard. Step 19. Reattach the base cover and secure it - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 52
Remove the hard disk drive. Refer to "Replacing the hard disk drive". Step 6. Remove the optical drive. Refer to "Replacing the optical drive". Step 7. Remove the system fan. Refer to "Replacing the system chassis and slide it out as shown. 46 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 53
battery as shown. Step 13. To install the new battery: a. Insert the new battery (CR2032) into the socket with the side labeled "+" facing up, and press the battery , optical drive, heat-sink, system fan, and hard disk drive to the , or memory cards) from the drives, shut down the operating system, - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 54
and slide the hinge into position. b. Secure the hinge to the chassis with the 6 screws. c. Reconnect the scalar headphone input, scalar and DVI/HDMI cables to the motherboard. Step 8. Reattach the base cover and secure it with the screws. 48 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 55
3. Step 4. Step 5. Step 6. 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 out the rear cover. Step 10. To reattach the rear cover: Chapter 8. Replacing hardware 49 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 56
reconnect the scalar headphone input, scalar and DVI/HDMI cables to the motherboard. Step 12. Reattach the base cover and secure it with the screws. Replacing the scalar board Note: Turn off the computer cables to the new scalar board. 50 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 57
and DVI/HDMI cables to the motherboard. Step 12. Reattach the base cover and secure it with the screws. Replacing the touch control replace the touch control board: Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Step 7. Step 8. Remove any media (disks, CDs, DVDs, or memory cards) from the drives - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 58
and DVI/HDMI cables to the motherboard. Step 12. Reattach the base cover and secure it with the screws. Replacing the media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 59
and DVI/HDMI cables to the motherboard. Step 13. Reattach the base cover and secure it with the screws. Replacing the power switch replace the power switch board: Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Step 7. Step 8. Remove any media (disks, CDs, DVDs, or memory cards) from the drives - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 60
the scalar headphone input, scalar and DVI/HDMI cables to the motherboard. Step 12. Reattach the base cover and secure it with the screws. Replacing the Bluetooth module Attention: Turn off the computer rear cover to the LED panel. 54 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 61
, scalar and DVI/HDMI cables to the motherboard. Step 12. Reattach the base cover and secure it with the screws. Replacing the Wi-Fi card replace the Wi-Fi card: Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Step 7. Step 8. Remove any media (disks, CDs, DVDs, or memory cards) from the drives - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 62
DVI/HDMI cables to the motherboard. Step 13. Reattach the base cover and secure it with the screws. Replacing the front function board Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the base cover. 56 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 63
replace the front function board: Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Step 7. Step 8. Step 9. Remove any media (disks, CDs, DVDs, or memory cards) from the drives and DVI/HDMI cables to the motherboard. Step 14. Reattach the base cover and secure it with the screws. Replacing the LED - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 64
"Replacing the Wi-Fi card". Step 13. Remove the Wi-Fi antenna cable from the front bezel. Step 14. Remove the camera. Refer to "Replacing the camera". Step 15. Remove the front function board. Refer to "Replacing the front function board". 58 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 65
module, power switch board, converter board, touch control board, scalar board and front function the scalar headphone input, scalar and DVI/HDMI cables to the motherboard. Step 22. replaceable units (FRUs). Attention: Be sure to read and understand all the safety information before replacing - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 66
# 10 25 24 23 22 21 Name Motherboard 30 Heat-sink 1 System fan 15 Wi-Fi card 29 Converter 8 9 10 11 12 13 14 15 16 17 18 19 20 Part Description (English) A520 WIN8 UMA W/HDMI W/TV MB A520 WIN8 UMA W/HDMI W/O TV MB A520 WIN8 UMA W/O HDMI W/TV MB A520 WIN8 UMA W/O HDMI W/O TV MB A520 WIN8 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 67
A520 Wlan Anntena A720 Speaker(L+R) A520 STAND A520 Rear Cover A520 ODD Frame A520 Base Bottom A520 MMB Board Bracket A520 Base Cover W/HDMI W/TV A520 Base Cover W/O HDMI W/TV A520 Base Cover W/HDMI W/O TV A520 Base Cover W/O HDMI W/O TV A520 ODD Bezel A520 N Chapter 8. Replacing hardware 61 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 68
6MB 4c E1 PGAProcessor 102500289 N Intel B970 2.3G Q0 2M 2cPGA Processor 102500230 N I3-2328M SANDY BRIDGE J-1 3MB 2c PGA 102500421 N 2.2GHz STD 35W Intel I7-3630QM sector generation ST500LM012 5.4K 9.5 500G HDD 16200210 N 62 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 69
Cable 31033858 1 Luxshare 1.0m C5 US Power Cable 31049517 1 longwell Black Single-end 1.0m SAAPower Cable 31035397 1 Volex 1.0m C5 Austrilian Power Cable 31049500 1 Chapter 8. Replacing hardware 63 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 70
Power Cable Luxshare 1.0m C5 Europe Power Cable longwell Black Single-end 1.0m India Power Cable Longwell Black Single-end 1.0m Italy C5 Power Cable® Volex 1.0m 1 31039103 1 31049508 1 31039107 1 31049502 1 31038885 1 31049499 1 64 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 71
SA Power Cable 31049501 1 21 TV-Tuner card CastleNet RTL8188CU USB 11N WiFi module NA N Avermedia H334 DVB-T Mini TV Card SM-8861 Mouse(MY) Silver 25203608 1 Liteon SM-8861 Mouse(No Battery) Silver 25203607 1 Liteon SM-8861(JP) Mouse-Silver 25205774 1 Chapter 8. Replacing hardware 65 - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 72
(TR) S-Silk KB-Silver(WW) 90200567 1 Liteon SK-8861(US-MY)S-SilkKB-Silver(WW) 90200568 1 Liteon SK-8861(LA-AR)S-SilkKB-Silver(WW) 90200569 1 66 IdeaCentre A520 All-In-One PCHardware Maintenance Manual - Lenovo A520 | IdeaCentre A520 All-In-One PC Hardware Maintenance Manual - Page 73
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
IdeaCentre A520 All-In-One PC
Hardware Maintenance Manual
Machine Types: 6597/10106 [A520]