Lenovo A540/A740Hardware Maintenance Manual Machine Types: F0AN [A540];F0AM [A740]
Lenovo A540/A740 Hardware Maintenance Manual Machine Types: F0AN [A540];F0AM [A740]
First Edition (March 2014)6th © Copyright Lenovo 2014. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software are delivered pursuant a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No.
Contents Chapter 1. About this manual . . . . . . 1 1 POST error codes . . . . . . . . . . . . . Undetermined problems . . . . . . . . . . . 20 20 Chapter 2. Safety information . . . . . . 3 Chapter 7. Replacing hardware . . . . 21 General safety . . . . . . . . . . . . Electrical safety . . . . . . . . . . . Safety inspection guide . . . . . . . . Handling electrostatic discharge-sensitive devices . . . . . . . . . . . . . . Grounding requirements . . . . . . . . Safety notices . . . . . . . . . . .
iv Lenovo A540/A740Hardware Maintenance Manual
Chapter 1. About this manual This manual contains service and reference information for Lenovo A540/A740 computers listed on the cover. It is intended only for trained servicers who are familiar with Lenovo computer products. Before servicing a Lenovo product, be sure to read the Safety Information. The description of the TV-tuner card in this manual applies only to computers with a TV-tuner card installed. It does not apply to computers without a TV-tuner card.
2 Lenovo A540/A740Hardware Maintenance Manual
Chapter 2. Safety information This chapter contains the safety information that you need to be familiar with before servicing a computer. General safety Follow these rules to ensure general safety: • Keep the areas around the computer clear and clean during and after maintenance. • When lifting any heavy object: 1. Ensure you can stand safely without slipping. 2. Distribute the weight of the object equally across both feet. 3. Lift slowly. Never move suddenly or twist when you attempt to lift. 4.
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. • Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet.
– 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.
• 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. • 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.
To Connect To Disconnect 1. Turn everything OFF. 1. Turn everything OFF. 2. First, attach all cables to devices. 2. First, remove power cords from outlets. 3. Attach signal cables to connectors. 3. Remove signal cables from connectors. 4. Attach power cords to outlet. 4. Remove all cables from devices. 5. Turn device ON. CAUTION: When replacing the lithium battery, use only Part Number 45C1566 or an equivalent type battery recommended by the manufacturer.
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. CAUTION: Do not place any object weighing more than 82 kg (180 lbs.) on top of rack-mounted devices.
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 A540/A740 This section lists the physical specifications.
10 Lenovo A540/A740Hardware 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.
12 Lenovo A540/A740Hardware 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.
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.
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.
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.
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.
18 Lenovo A540/A740Hardware Maintenance Manual
Chapter 6. Symptom-to-FRU Index The Symptom-to-FRU index lists error symptoms and possible causes. The most likely cause is listed first. Always begin with Chapter 4, “General Checkout,” on page 11. This index can also be used to help you decide which FRUs to have available when servicing a computer. If you are unable to correct the problem using this index, go to “Undetermined problems” on page 20. Notes: • If you have both an error message and an incorrect audio response, diagnose the error message first.
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: • Checks some basic motherboard operations • Checks that the memory is working correctly • Starts video operations • Verifies that the boot drive is working POST Error Message Description/Action Keyboard error Cannot initialize the keyboard.
Chapter 7. Replacing hardware Attention: Do not remove the computer cover or attempt any repair before reading the “Important safety information” in the Safety and Warranty Guide that was included with your computer. To obtain copies of the Safety and Warranty Guide, go to the Support Web site at: http://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.
Replacing the keyboard and mouse Attention: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. To replace the keyboard and mouse 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.
Step 2. Locate the connector for the power cord. Refer to “Rear view”. Step 3. Disconnect the failing power cord and adapter from the computer and connect the new power cord and adapter to the same connector. Removing the base 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.
Step 5. Return the computer to an upright position, then lift the base cover up and slide it out as shown. Step 6. To reattach the base cover: a. Line up the base cover with the base, slide it back and snap it into position. b. Place the computer face-down on a soft flat surface, then secure the base cover to the base with the 8 screws. 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.
Step 5. Remove the 4 screws that secure the hard disk drive to the motherboard. Step 6. Disconnect the data and power cable from the hard disk drive. Chapter 7.
Step 7. Remove the 4 screws that secure the hard disk drive to the bracket, then separate the hard disk drive from the bracket. Step 8. Install the new hard disk drive as follows: Step 9. a. Secure the new hard disk drive to the brackets with the 4 screws. b. Connect the data and power cable to the new hard disk drive and motherboard. c. Secure the new hard disk drive to chassis with the 2 screws. Reattach the base cover and secure it with the screws.
Step 5. Push out the latches on both sides of the memory socket to release the memory module. Gently pull the memory module upward to remove it from its socket. Step 6. 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. Step 7. Reattach the base cover and secure it with the screws.
Step 7. Lift the system fan up to remove it. Step 8. Line up the new system fan, then secure it to the heat-sink and connect the new power cable to the motherboard. Step 9. Reattach the base cover and secure it with the screws. Replacing the heat-sink Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover. To replace the heat-sink: Step 1.
Step 7. 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 components. Attention: Use an alcohol pad to wipe the thermal grease off the heat-sink and CPU. Step 8. Use a thermal grease syringe to place 5 drops of grease on the top of the microprocessor. Each drop of grease should be 0.03ml (3 tick marks on the grease syringe). Step 9.
Step 6. Remove the 4 screws that secure the speaker system to the motherboard. Step 7. Detach the speaker from the chassis. Step 8. To install the new speaker system: Step 9. a. Attach the new speaker cable to the chassis and secure it with the 4 screws. b. Connect the new speaker cable to the motherboard. Reattach the base cover and secure it with the screws. Replacing the motherboard Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
Step 9. Remove the 3 screws that secure the motherboard to the chassis and slide it out as shown. Step 10. To install the new motherboard: a. Install the memory module to the connector on the new motherboard. b. Line up the new motherboard with the chassis and slide it into position. Align the holes on the new motherboard with the mounting holes on the chassis and secure it to the chassis with the screws. c. Connect all the cables to the new motherboard. Step 11.
Step 5. Disconnect the touch and LED panel cables from the connectors on the motherboard. Step 6. Remove the 6 screws that secure the hinge to the chassis 1 , then raise the hinge to remove it from the chassis. 2 2 1 Step 7. Step 8. To reattach the hinge to the chassis: a. Line up the hinge with the chassis and slide the hinge into position. b. Secure the hinge to the chassis with the 6 screws. c. Reconnect the touch and LED panel cables to the motherboard.
Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operating system, and turn off the computer and all attached devices. Step 2. Unplug all power cords from electrical outlets. Step 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O) cables, 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.
Step 7. 34 Slide the LED panel upward from the bottom (with “Lenovo” logo) of the panel.
Step 8. Open up the LED panel from the bottom 1 , remove the 2 screws that secure the transform board to the rear cover 2 , and then disconnect the 2 cables from the transform board. 3 Step 9. Then separate the rear cover from the LED panel. Step 10. To reattach the rear cover: a. Line up the LED panel with the rear cover, reconnect the LVDS1 and LVDS2 cables to the transform board. b. Reattach the transform board, and secure it to the rear cover with the 2 screws. c.
Step 6. Remove the rear cover. Refer to “Removing the rear cover”. Step 7. Remove the 2 screws that secure the transform board to the rear cover, and then lift it up to remove it. Step 8. Disconnect all the cables from the transform board. Step 9. Lift up the Wi-Fi card to remove it from the transform board. Step 10. To install the new transform board: a. Install the Wi-Fi card to the new transform board. b. Connect all the cables to the new transform board. c.
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 base cover. Refer to “Removing the base cover”. Step 5. Remove the hinge from the chassis. Refer to “Removing the hinge from the chassis”. Step 6. Remove the rear cover. Refer to “Removing the rear cover”. Step 7.
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 base cover. Refer to “Removing the base cover”. Step 5. Remove the hinge from the chassis. Refer to “Removing the hinge from the chassis”. Step 6. Remove the rear cover. Refer to “Removing the rear cover”. Step 7.
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.
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.
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 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.
Step 12. Reattach the base cover and secure it with the screws. A540 FRU lists This chapter lists the information on the field replaceable units (FRUs) for A540 All-In-One computers. 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). • 1– identifies parts that are fairly simple to replace, requiring few or no tools.
RAM C A540 W8P I3-4158 UMA W/TV 5B20F63000 N C A540 W8P I5-4258 UMA W/TV 5B20F62991 N C A540 W8P I7-4558 UMA W/TV 5B20F62980 N C A540 W8P I3-4158 DIS W/O TV 5B20F62969 N C A540 W8P I5-4258 DIS W/O TV 5B20F62996 N C A540 W8P I7-4558 DIS W/O TV 5B20F62976 N C A540 W8P I3-4158 DIS W/TV 5B20F62963 N C A540 W8P I5-4258 DIS W/TV 5B20F62989 N C A540 W8P I7-4558 DIS W/TV 5B20F62995 N M471B5173QH0-YK0 4GB D3L-1600S内存-HF 1100906 N HMT451S6AFR8A-PB 1100638 N MT8KTF51264HZ-1G6E1 4GB D3
WIFI_Bluetooth Remoter TV tuner Power Cord 44 802.11AC_BT4.0 RTL8821AU-CG 1x1ac+BT4.0 Combo USB 11202701 N 802.11AC_BT4.0 RTL8821AU-CG 1x1ac+BT4.0 Combo USB 11202701 N 802.11BGN_BT4.0 RTL8723AS-VAU 1x1bgn BT4.0 Combo USB 20200052 N RTL8723AS-VAU 1x1bgn BT4.0 Combo USB 20200052 N RTL8723AS-VAU 1x1bgn BT4.0 Combo USB 20200052 N RTL8723AS-VAU 1x1bgn BT4.0 Combo USB 20200052 N RTL8723AS-VAU 1x1bgn BT4.0 Combo USB 20200052 N RTL8723AS-VAU 1x1bgn BT4.
KB&Mouse KB&Mouse 良维黑色单头1.8m C13 IRAM电源线® 31036980 1 豪利士1.8米C13拉美制电源线 31049515 1 立讯(博硕)1.8米 C13 拉美制电源线 31502869 1 良维黑色单头1.8m C13 Brazil电源线® 31038784 1 豪利士1.8米C13巴西制电源线 31049513 1 立讯(博硕)1.8米 C13 巴西电源线 31502862 1 良维黑色单头1.8m C13 Korea电源线® 31026351 1 VL BLK1.8m KTL Power Cord® 31026143 1 立讯(博硕)1.8米 C13 韩制电源线 31502870 1 Longwell 1.8M Italy C13 power cord® 31039726 1 豪利士1.8米C13意制电源线 31049512 1 立讯(博硕)1.8米 C13 意大利电源线 31502864 1 Longwell 1.
Liteon SK-8861(BE-EN) 2.4G KB-Metal8 25216039 2 Liteon SK-8861(US-EU) 2.4G KB-Metal8 25216040 2 Liteon SK-8861(CH) 2.4G KB-Metal8 SD50F65816 2 Liteon ZTM600 2.4G Mouse (WW) Silver 25216043 2 Liteon SM-8861 Mouse(WW) improved silver 25216250 2 LTO SM-8861 MC(No BTY) improved silver 25216336 2 DISPLAY DISPLAY Module,C,A540,23.
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). • 1– identifies parts that are fairly simple to replace, requiring few or no tools. • 2– identifies parts that are slightly more difficult to replace. • N-identifies parts that are not to be replaced by the customer.
RAM BDPLANAR C A740 W8P I7-4558 DIS Q W/O TV 5B20F65674 N BDPLANAR C A740 W8P I3-4158 DIS Q W/TV 5B20F65667 N BDPLANAR C A740 W8P I5-4258 DIS Q W/TV 5B20F65660 N BDPLANAR C A740 W8P I7-4558 DIS Q W/TV 5B20F65655 N 4G M471B5173QH0-YK0 4GB D3L-1600S内存-HF 1100906 N HMT451S6AFR8A-PB 1100638 N MT8KTF51264HZ-1G6E1 4GB D3L-1600S内存 -HF 1100957 N Mic_R D9QBJ 4GB D3L-1600S内存-HF 1100967 N Mic_S D9QBJ 4GB D3L-1600S内存 1100959 N M471B1G73QH0-YK0 8GB D3L-1600S内存-HF 1100907 N HMT41GS6AFR
Remoter TV tuner Power Cord Philips Win8 IRWhite Controller 888900017 N Philips IR receiver 888900019 N Philips Win7 IR receiver(R) 888010662 N DVB-T Avermedia H334 DVB-T Mini TV Card 11201071 N ATSC Avermedia H334 ATSC Mini TV Card 11201072 1 Power Cord LW BLK1.8m UL CSA Power Cord(R) 31026357 1 VL BLK1.8m UL CSA Power Cord® 31026145 1 立讯(博硕)1.8米 C13 美制电源线 31049521 1 LW BLK1.8m ANE Power Cord® 31026350 1 VL BLK1.8m ANE Power Cord® 31026140 1 立讯(博硕)1.
KB&Mouse 50 立讯(博硕)1.8米 C13 韩制电源线 31502870 1 Longwell 1.8M Italy C13 power cord® 31039726 1 豪利士1.8米C13意制电源线 31049512 1 立讯(博硕)1.8米 C13 意大利电源线 31502864 1 Longwell 1.8M Denmark C13 power cord® 31039729 1 豪利士1.8米C13丹麦制电源线 31049511 1 立讯(博硕)1.8米 C13 丹麦制电源线 31502863 1 Longwell 1.8M SEV C13 power cord® 31039732 1 豪利士1.8米C13瑞士制电源线 31049516 1 立讯(博硕)1.8米 C13 瑞士制电源线 31502868 1 Longwell 1.8M Israel C13 power cord® 31039728 1 豪利士1.8米C13以色列制电源线 31049510 1 立讯(博硕)1.
Thermal Fan COVER Rear C A740 W/LOGO 5CB0F65661 N Speaker A540 Speaker 90205401 N HINGE C A740 5H50F65671 N COVER Upper,C,A540,W/TV 5CB0F63293 N COVER Upper,C,A540,W/O TV 5CB0F63300 N COVER Upper,C,A540,W/O TV W/O HDMI_IN 5CB0F63311 N COVER Lower,C,A540 5CB0F63305 N FOOT Rubber,C,A540 5F40F63301 N BRACKET HDD,C,A540,L+R 5B40F63303 N CABLE HDD SATA,C,A540 5C10F63009 N FOOT Panel,C,A540 5F40F63299 N BRACKET DC-IN,C,A540 5B40F63297 N CABLE DC-IN,C,A540 5C10F6
52 Lenovo A540/A740Hardware Maintenance Manual
Chapter 8. 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.
