Au format texte : Hardware Maintenance Manual Lenovo 100e Chromebook Hardware Maintenance Manual Lenovo 100e Chromebook First Edition (March 2018) © Copyright Lenovo 2018. Contents Chapter 1. Safety information . . . . . . 1 General safety . . . . . . . . . . . . . . . . 1 Electrical safety . . . . . . . . . . . . . . . . 1 Safety inspection guide . . . . . . . . . . . . . 2 Handling devices that are sensitive to electrostatic discharge . . . . . . . . . . . . . . . . . . 3 Grounding requirements . . . . . . . . . . . . 4 Safety notices (multilingual translations) . . . . . . 4 Chapter 2. General checkout . . . . . 21 What to do first . . . . . . . . . . . . . . . 21 Lenovo 100e Chromebook — CRU list . . . . . . 22 Chapter 3. Create and use a USB repair shim . . . . . . . . . . . . . . . 23 What is a USB repair shim? . . . . . . . . . . 23 Create a repair shim . . . . . . . . . . . . . 23 Boot into Developer Mode. . . . . . . . . . . 23 Disable ROM-write protection . . . . . . . . . 24 Use a USB repair shim to diagnose and fix problems . . . . . . . . . . . . . . . . . 24 Factory test items . . . . . . . . . . . . 25 Chapter 4. Idetifying FRUs (CRUs) . . 27 All FRUs (CRUs) for Lenovo 100e Chromebook . . 27 Chapter 5. Removing a FRU or CRU . . . . . . . . . . . . . . . . . . 31 General guidelines. . . . . . . . . . . . . . 31 Cut off the power supply from the built-in battery pack . . . . . . . . . . . . . . . . . . . 31 Remove the back cover. . . . . . . . . . . . 32 Remove the LCD module . . . . . . . . . . . 33 Remove the battery pack . . . . . . . . . . . 34 Remove the speakers . . . . . . . . . . . . 35 Remove the WLAN & Bluetooth combo module . . 35 Remove the USB board. . . . . . . . . . . . 36 Remove the system board. . . . . . . . . . . 37 Disassemble the LCD module . . . . . . . . . 38 Remove the LCD bezel . . . . . . . . . . 38 Remove the LCD panel . . . . . . . . . . 38 Remove the hinges. . . . . . . . . . . . 40 Remove the camera board and eDP cable. . . 40 Appendix A. Lenovo part numbers for replacement FRUs . . . . . . . . . 43 Appendix B. Lenovo part numbers for CRUs and miscellaneous parts . . 45 Appendix C. Label locations . . . . . 49 Trademarks . . . . . . . . . . . . . . . . . li © Copyright Lenovo 2018 iii iv Hardware Maintenance Manual Chapter 1. Safety information This chapter presents the following safety information that you need to be familiar with before you service a Lenovo notebook computer. General safety Follow these rules to ensure general safety: • Observe good housekeeping in the area of the machines during and after maintenance. • When lifting any heavy object: 1. Make sure that you can stand safely without slipping. 2. Distribute the weight of the object equally between your feet. 3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift. 4. 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 object that weighs more than 16 kg (35 lb) or that you think is too heavy for you. • Do not perform any action that causes hazards to the customer, or that makes the equipment unsafe. • Before you start the machine, make sure that other service technicians and the customer's personnel are not in a hazardous position. • Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine. • Keep your tool case away from walk areas so that other people will not trip over it. • Do not wear loose clothing that can be trapped in the moving parts of a machine. Make sure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it. • Insert the ends of your necktie or scarf inside clothing or fasten it with a non-conductive clip, about 8 centimeters (3 inches) from the end. • Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing. Attention: Metal objects are good electrical conductors. • Wear safety glasses when you are hammering, drilling, soldering, cutting wire, attaching springs, using solvents, or working in any other conditions that might be hazardous to your eyes. • After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective. • Reinstall all covers correctly before returning the machine to the customer. • Fan louvers on the machine help to prevent overheating of internal components. Do not obstruct fan louvers or cover them with labels or stickers. Electrical safety 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, near their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic discharges. Do not use this type of mat to protect yourself from electrical shock. • 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. • Disconnect all power before: – Performing a mechanical inspection – Working near power supplies © Copyright Lenovo 2018 1 – Removing or installing main units • Before you start to work on the machine, unplug the power cord. If you cannot unplug it, ask the customer to power-off the wall box that supplies power to the machine, and to lock the wall box in the off position. • If you need to work on a machine that has exposed electrical circuits, observe the following precautions: – Ensure that another person, familiar with the power-off controls, is near you. Attention: 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. Attention: An electrical shock can occur only when there is a complete circuit. By observing the above rule, you may prevent a current from passing through your body. – When using testers, 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; Instructions for these precautions are in the safety sections of maintenance information. Use extreme care when measuring high voltages. • Regularly inspect and maintain your electrical hand tools for safe operational condition. • Do not use worn or broken tools and testers. • Never assume that power has been disconnected from a circuit. First, check that it has been powered off. • Always look carefully for possible hazards in your work area. Examples of these hazards are moist floors, non-grounded power extension cables, power surges, and missing safety grounds. • Do not touch live electrical circuits with the reflective surface of a plastic dental mirror. The surface is conductive; such touching can cause personal injury and machine damage. • Do not service the following parts with the power on when they are removed from their normal operating places in a machine: – Power supply units – Pumps – Blowers and fans – Motor generators – Similar units as listed above This practice ensures correct grounding of the units. • If an electrical accident occurs: – Use caution; do not become a victim yourself. – Switch off power. – Send another person to get medical aid. Safety inspection guide The purpose of this inspection guide is to assist you in identifying potentially unsafe conditions. As each machine was designed and built, required safety items were installed to protect users and service technicians from injury. This guide addresses only those items. You should use good judgment to identify potential safety hazards due to attachment of non-Lenovo features or options not covered by this inspection guide. If any unsafe conditions are present, you must determine how serious the apparent hazard could be and whether you can continue without first correcting the problem. Consider these conditions and the safety hazards they present: • Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal electrical shock) • Explosive hazards, such as a damaged cathode ray tube (CRT) face or a bulging capacitor • Mechanical hazards, such as loose or missing hardware 2 Hardware Maintenance Manual To determine whether there are any potentially unsafe conditions, use the following checklist at the beginning of every service task. 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 the frame ground. b. The power cord should be the authorized type specified for your computer. Go to: http:// www.lenovo.com/serviceparts-lookup c. Insulation must not be frayed or worn. 4. Check for cracked or bulging batteries. 5. Remove the cover. 6. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo alterations. 7. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage. 8. Check for worn, frayed, or pinched cables. 9. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with. Handling devices that are sensitive to electrostatic discharge 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 machine, 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: • Keep the parts in protective packages until they are inserted into the product. • Avoid contact with other people. • 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 a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices. • 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 to guard against ESD damage is desirable but not necessary. – Attach the ESD ground clip to any frame ground, ground braid, or green-wire ground. – When working on a double-insulated or battery-operated system, use an ESD common ground or reference point. You can use coax or connector-outside shells on these systems. – Use the round ground prong of the ac plug on ac-operated computers. Chapter 1. Safety information 3 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 (multilingual translations) The safety notices in this section are provided in the following languages: • English • Arabic • Brazilian Portuguese • French • German • Hebrew • Japanese • Korean • Spanish • Traditional Chinese DANGER DANGER DANGER 4 Hardware Maintenance Manual DANGER DANGER DANGER DANGER DANGER Chapter 1. Safety information 5 6 Hardware Maintenance Manual PERIGO PERIGO PERIGO Chapter 1. Safety information 7 PERIGO PERIGO PERIGO PERIGO PERIGO 8 Hardware Maintenance Manual DANGER DANGER DANGER DANGER Chapter 1. Safety information 9 DANGER DANGER DANGER DANGER VORSICHT 10 Hardware Maintenance Manual VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1. Safety information 11 VORSICHT VORSICHT VORSICHT 12 Hardware Maintenance Manual Chapter 1. Safety information 13 14 Hardware Maintenance Manual Chapter 1. Safety information 15 16 Hardware Maintenance Manual Chapter 1. Safety information 17 18 Hardware Maintenance Manual Chapter 1. Safety information 19 20 Hardware Maintenance Manual Chapter 2. General checkout Before you go to the checkout instructions, ensure that you read the following important notes. Important notes: • Only certified trained personnel should service the computer. • Before replacing any FRU, read the entire page on removing and replacing FRUs. • When you replace FRUs, it is recommended to use new nylon-coated screws. • Be extremely careful during such write operations as copying, saving, or formatting. Drives in the computer that you are servicing sequence might have been altered. If you select an incorrect drive, data or programs might be overwritten. • Replace a FRU only with another FRU of the correct model. When you replace a FRU, make sure that the model of the machine and the FRU part number are correct by referring to the FRU parts list. • A FRU should not be replaced because of a single, unreproducible failure. Single failures can occur for a variety of reasons that have nothing to do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. Consider replacing a FRU only when a problem recurs. If you suspect that a FRU is defective, clear the error log and run the test again. If the error does not recur, do not replace the FRU. • Be careful not to replace a nondefective FRU. What to do first When you return a FRU, you must include the following information in the parts exchange form or parts return form that you attach to it: 1. Name and phone number of service technician 2. Date of service 3. Date on which the machine failed 4. Date of purchase 5. Failure symptoms, error codes appearing on the display, and beep symptoms 6. Procedure index and page number in which the failing FRU was detected 7. Failing FRU name and part number 8. Machine type, model number, and serial number 9. Customer's name and address Note: During the warranty period, the customer may be responsible for repair costs if the computer damage was caused by misuse, accident, modification, unsuitable physical or operating environment, or improper maintenance by the customer. Following is a list of some common items that are not covered under warranty and some symptoms that might indicate that the system was subjected to stress beyond normal use. Before checking problems with the computer, determine whether the damage is covered under the warranty by referring to the following list: The following are not covered under warranty: • LCD panel cracked from the application of excessive force or from being dropped • Scratched (cosmetic) parts • Distortion, deformation, or discoloration of the cosmetic parts • Plastic parts, latches, pins, or connectors that have been cracked or broken by excessive force • Damage caused by liquid spilled into the system © Copyright Lenovo 2018 21 • Damage caused by the improper insertion of a personal-computer card (PC card) or the installation of an incompatible card • Improper disc insertion or use of an external optical drive • Fuses blown by attachment of a non-supported device • Forgotten computer password (making the computer unusable) • Sticky keys caused by spilling a liquid onto the keyboard • Use of an incorrect ac power adapter on laptop products The following symptoms might indicate damage caused by non-warranted activities: • Missing parts might be a symptom of unauthorized service or modification. • Check for obvious damage to a hard disk drive. If the spindle of a hard disk drive becomes noisy, the hard disk drive might have been dropped or subject to excessive force. Lenovo 100e Chromebook — CRU list Model: Lenovo 100e Chromebook MT: 81ER CRU Type ac power adapter self-service power cord self-service stylus self-service 22 Hardware Maintenance Manual Chapter 3. Create and use a USB repair shim What is a USB repair shim? A USB repair shim is created by writing a repair shim image to a USB storage drive. Once created, it can be used to boot and service the Chromebook computer, including: • Diagnose problems and restore system to factory settings. • Refresh the system with the latest firmware. Before replacing any FRUs, use the repair shim to diagnose and identify problems. Note: You do not need to use the repair shim to diagnose problems before replacing CRUs. For the list of CRUs for your computer, refer to “Lenovo 100e Chromebook — CRU list” on page 22. Create a repair shim Step 1. Prepare a USB drive.The capacity of the USB drive should be at least 8 gigabytes (GB). Attention: Creating repair shim deletes all files stored on the USB drive. Back up personal files before creating the shim. Step 2. Download the image file of the repair shim from http://www.lenovo.com/support. A Lenovo service credential is needed to download the image file. Attention: Make sure to download the latest version of the image file. A shim created with an earlier version of the image file may cause the repair process to fail. Step 3. Use a disk image tool to write the downloaded image to the USB drive. An open source tool Win32 Disk Imager is available for download at http://sourceforge.net/projects/win32diskimager. Boot into Developer Mode Step 1. Shut down the Chromebook. Step 2. While holding down esc and the Refresh key, press the power button.Wait for the Chromebook to boot in Recovery Mode. Step 3. When the recovery screen is displayed, press ctrl — d. Note: A message “Please insert a recovery USB stick or SD card.” is typically displayed on the Recovery screen. Step 4. Press Enter to turn OS verification OFF. Attention: If you press Enter, all local data on your Chromebook will be deleted. Step 5. Wait for the Chromebook to restart or press ctrl —d to start immediately.Your Chromebook will restart and prepare to boot into Developer Mode. Note: It takes about 10 to 15 minutes for your Chromebook to transition into Developer Mode. If you need to boot into normal mode, start your Chromebook, press the Space key when the message “OS Verification is OFF” is displayed. © Copyright Lenovo 2018 23 Disable ROM-write protection You need to disable the ROM-write protection function before you can use a repair shim to diagnose and fix problems. Step 1. Disconnect and the re-connect the battery cable.Refer to “” on page for how to locate and disconnect the battery cable. Step 2. Connect the Chromebook to ac power to activate the battery. Step 3. Boot the Chromebook into Developer Mode.Refer to “Boot into Developer Mode” on page 23 for instructions. Step 4. Press ctrl —alt — →(F2) to display the virtual terminal. Step 5. Type root and press Enter to log in as root. Step 6. Type the following command and press Enter at the command prompt. flashrom –p host –wp-disable Step 7. Type the following command and press Enter at the command prompt. flashrom –p ec –wp-disable Step 8. Press the Refresh key and the power button to restart the Chromebook. The ROM-write protection is disable after restart. Use a USB repair shim to diagnose and fix problems Make sure the ROM-write protection has been disabled. Refer to “Disable ROM-write protection” on page 24 for instructions. Step 1. While holding down the esc and the refresh key , press the power button.The Chrome OS recovery screen should be displayed. Step 2. Connect the USB repair shim to the computer. The repair shim will update the computer firmware and OS image automatically. Step 3. When prompted, choose I to install the shim image to the computer.When the update is completed, the computer restarts to the factory-test-image environment and then starts the Final Function Test (FFT). The FFT will run for 10 minutes and then the Final Assembly Test (FAT) will start. Note: When computer restarts, remove the repair shim and put it in a safe place. Step 4. If the Vital Product Data (VPD) is displayed on the screen, press esc to continue. If the system board is replaced, you are required to enter the VPD. Note: The VPD is a 20 — character string. Table 1. Combination of the 20 – character VPD Preceding characters Machine type Model number SN “1S”, 2 digits 7 digits 3 digits 8 digits The MTM and SN can be found on the label attaching to the bottom cover. Step 5. Follow the instructions on the screen to start the Final Function Test (FFT). 24 Hardware Maintenance Manual Step 6. If the factory test items reveal a defective component, turn off the computer, disconnect the ac power adapter, and then replace the defective component. Step 7. Turn on the computer.The computer should starts to the factory-test-image environment again. It is recommended that you run Final Function Test (FFT) to ensure that new components function correctly. Step 8. Run the GoogleRequiredTests.If the tests finish successfully, all data stored on the computer will be deleted and the computer will be turned off. If the GoogleRequiredTests fails, refer to “Common issues leading to GoogleRequiredTests fail” on page 26. Note: If any test is marked as failed, the final process cannot be completed. The final process can be forced to end by pressing the f key. Do not force the final process to end when a component fails the test. Force the final process to end only when the test has to be bypassed because it cannot be performed. After the repair process is completed, the built-in battery is disabled. The system is in a clean out-of-box state. In order to turn on the computer, attach the ac power adapter to the power connector on the computer first. If applicable, customers must re-enroll the system for enterprise enrollment. Note: ROM-write protection is re-activated after the repair process. Factory test items When the computer restarts to the factory-test-image environment, factory test items will run automatically. Table 2. Factory test items Test item Description Stress Test The Stress Test is designed to test how the system functions under stress by running the maximum workload applications. The Stress Test includes the test of memory, microprocessor, and graphics card. The test takes about 10 minutes to finish. FATP Test The FATP Test is designed to test the individual component to verify its function, such as the display, audio, camera, keyboard, and other components. It is recommended that you run all the FATP Test items. Some test items might require an HDMI monitor or an SD card. If the devices are not available, the tests can be bypassed, but with the overall test marked as failed. This will require the finalized step of the GoogleRequiredTests to be forced in order to complete the servicing of the computer. GoogleRequiredTests GoogleRequiredTests checks the system status and helps reset the system back to the factory-default settings. If any tests fails, the system cannot be finalized. Chapter 3. Create and use a USB repair shim 25 Common issues leading to GoogleRequiredTests fail Issue Description HWID mismatch Each Chromebook has a known hardware configuration. Each configuration is assigned an HWID. HWID mismatch can be caused by using unauthorized parts, or missing parts. If the write-protect function is not turned off before recovering the computer with the repair shim, it will also cause HWID mismatch. Write-protect function is off System cannot be finalized until the write-protect function is turned back on. Hardware identify A set of valid hardware identities (HWIDs) are provided by Google. Google logs the exact hardware combination into a Chromebook and creates a HWID. The HWID is used to ensure that all parts are valid during the repair of the Chromebook. The HWID is used for the following purposes: • Auto-update new patches and software for the lifetime of the computer • Recover the computer to the factory default settings If unauthorized parts are installed, you might not get the correct auto-updates for your computer, or you might not recover your computer successfully to the factory default settings. For example, if you install a different model of the wireless LAN card, which is not the required configuration, the HWID will not match. HWID is checked by using the repair shim. 26 Hardware Maintenance Manual Chapter 4. Idetifying FRUs (CRUs) All FRUs (CRUs) for Lenovo 100e Chromebook The exploded illustrations help Lenovo service technicians identify FRUs or CRUs that they may need to replace when servicing a customer’s computer. Refer to Appendix A “Lenovo part numbers for replacement FRUs” on page 43 if you need to look up Lenovo part numbers for a particular FRU or CRU. © Copyright Lenovo 2018 27 c f i e h d f g b a j Figure 1. Lenovo 100e Chromebook exploded view Table 3. FRU (CRU) categories No. FRU (CRU) category 1 LCD module 2 Upper case (with keyboard) 3 System board 4 WLAN & Bluetooth combo module 5 USB board 28 Hardware Maintenance Manual Table 3. FRU (CRU) categories (continued) 6 USB brackets 7 Battery 8 Speakers 9 Base cover 10 Screw pack a c f d b e d Figure 2. LCD module — exploded view Chapter 4. Idetifying FRUs (CRUs) 29 Table 4. FRU categories for the LCD module No. FRU (CRU) category 1 LCD bezel 2 Camera board 3 LCD panel 4 Hinges 5 eDP cable 6 LCD base cover 30 Hardware Maintenance Manual Chapter 5. Removing a FRU or CRU General guidelines When removing or replacing a FRU, ensure that you observe the following general guidelines: 1. Do not try to service any computer unless you have been trained and certified. An untrained person runs the risk of damaging parts. 2. Begin by removing any FRUs that have to be removed before replacing the failing FRU. Any such FRUs are listed at the beginning of each FRU replacement procedure. Remove them in the order in which they are listed. 3. Follow the correct sequence in the steps for removing a FRU, as shown in the illustrations by the numbers in square callouts. 4. When removing a FRU, move it in the direction as shown by the arrow in the illustration. 5. To install a new FRU in place, perform the removal procedure in reverse and follow any notes that pertain to replacement. 6. When replacing a FRU, carefully retain and reuse all screws. If screws are missing, look up the Lenovo parts numbers in Appendix B “Lenovo part numbers for CRUs and miscellaneous parts” on page 45 for replacement screws and order them through the Lenovo CRM system. 7. When replacing the base cover, reapply all labels that come with the replacement base cover. If some original labels are not included with the replacement base cover, peal them off from the original base cover and paste them on the replacement base cover. Refer to Appendix C “Label locations” on page 49 for the layout of labels on the back side of the base cover. DANGER Before removing any FRU or CRU, shut down the computer and unplug all power cords from electrical outlets. Attention: After replacing a FRU, do not turn on the computer until you have ensured that all screws, springs, and other small parts are in place and none are loose inside the computer. Verify this by shaking the computer gently and listening for rattling sounds. Metallic parts or metal flakes can cause electrical short circuits. Attention: The system board is sensitive to and can be damaged by ESD. Before touching it, establish personal grounding by touching a ground point with one hand or by using an ESD strap (P/N 6405959). Cut off the power supply from the built-in battery pack Before replacing any FRUs, cut off the power supply from the built-in battery pack. Step 1. Boot the Chromebook into Developer Mode.Refer to “Boot into Developer Mode” on page 23 for instructions. Step 2. Press ctrl —alt — →(F2) to display the virtual terminal. Step 3. Type chronos and press Enter to log in. Step 4. Type sudo bash and press Enter. Note: If you have set up a password for the chronos account, type the password when prompted. The following message should be displayed after you press Enter. We trust you have received the usual lecture from the local system administrator. It usually boils down to these © Copyright Lenovo 2018 31 three things: #1) Respect the privacy of others #2) Think before you type #3) With great power comes great responsibility Step 5. Type ectool batterycutoff and press Enter. Step 6. When the message SUCCESS. The battery has arranged a cut-off and the system should be shutdown immediately. is printed, disconnect the ac power adapter from the computer and the computer turns off immediately. If you re-connect the ac power adapter, power supply from the built-in battery pack will resume. Remove the back cover Step 1. Place the Chromebook on a desk, with the base cover facing upwards. Step 2. Remove the screws. a a a a a a a a a a Table 5. Screw specifications Screw location Quantity Specifications Back cover 10 M2.5 × 6 mm Step 3. Use a bar to pry the illustrated position; slowly pull the back cover along the edges until it is completely detached from the Chromebook. 32 Hardware Maintenance Manual d c c c b c Refer to Table 14 “Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part number for the replacement back cover. Remove the LCD module Make sure the following FRUs (CRUs) have been removed and the battery connector has been detached. “Remove the back cover” on page 32 Step 1. Disconnect the antenna cables and the LCD cable from the system board. c a b d d Step 2. Remove the screws. Table 6. Screw specifications — removing the LCD module Screw location Quantity Specifications Hinges to upper case 6 M2.5 × 5 mm Step 3. Lift up the LCD module to detach it from the upper case. The LCD module is not a FRU. Instead, it contains FRUs as its components. Refer to “Disassemble the LCD module” on page 38 if you need to replace a FRU contained in the LCD module. Chapter 5. Removing a FRU or CRU 33 Remove the battery pack Make sure the following FRUs (or CRUs) have been removed. “Remove the back cover” on page 32 Step 1. Disconnect the cable that is on top of the battery; unplug the battery cable from the system board. a b c Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable itself. Step 2. Remove the screws and take out the battery pack. a a b a a Table 7. Screw specifications Screw location Quantity Specifications Color Battery pack to upper case 4 M2 × 4 mm Silver Refer to Table 14 “Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers for the following replacement parts: Battery pack 34 Hardware Maintenance Manual Remove the speakers Make sure the following FRUs (CRUs) have been removed. “Remove the back cover” on page 32 Step 1. Unplug the speakers’ cable from the system board. b b b b a c c Figure 3. Unplug the speakers’ cable from the system board Step 2. Remove the screws. Table 8. Screw specifications Screw location Quantity Specifications Speakers to upper case 4 M2 x 2.5 mm Step 3. Carefully take the cable out of guiders and remove the speakers. Refer to Table 14 “Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers for the replacement speakers. Remove the WLAN & Bluetooth combo module Make sure the following FRUs (CRUs) have been removed and the battery connector has been detached. “Remove the back cover” on page 32 Step 1. Disconnect the white and black cables. Chapter 5. Removing a FRU or CRU 35 b c a a Figure 4. Disconnect antenna cables Step 2. Remove the screw and pull out the WLAN & Bluetooth combo module in the direction as shown by the arrow. Table 9. Screw specifications — removing the WLAN & Bluetooth combo module Screw location Quantity Specifications WLAN&Bluetooth combo card to upper case 1 M2 x 3 mm Refer to Table 14 “Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers for the replacement WLAN & Bluetooth combo modules. Remove the USB board Make sure the following FRUs (CRUs) have been removed: “Remove the back cover” on page 32 “Remove the LCD module” on page 33 Step 1. Disconnect the cables between the USB board and the system board. a b c d Figure 5. Disconnect the two cable Step 2. Remove the screw. 36 Hardware Maintenance Manual Table 10. Screw specifications Screw location Quantity Specifications USB board to upper case 4 M2 × 4 mm Step 3. Remove the USB bracket and the USB board. Refer to Table 14 “Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers for the following replacement parts: USB board USB brackets Note: The replacement USB board includes two cables for connecting with the system board; replacement USB brackets come in left and right pairs. Remove the system board “Remove the back cover” on page 32 “Remove the LCD module” on page 33 “Remove the WLAN & Bluetooth combo module” on page 35 Step 1. Disconnect all cables from the system board. Notes: Cables that care connected with the system board includes: • Battery cable • USB board cables • Antenna cables • eDP cable • Speaker cable • Touch pad cable • Keyboard cable d c a b c c e Step 2. Remove the screws and take out the system board. Chapter 5. Removing a FRU or CRU 37 Table 11. Screw specifications — removing the LCD module Screw location Quantity Specifications system board to upper case 8 M2 ×4 mm Refer to Table 14 “Part numbers for FRUs (CRUs)” on page 43 to look up the Lenovo part numbers of the following replacement parts: System board USB brackets Upper case Note: Replacement USB brackets come in left and right pairs.. Disassemble the LCD module The LCD module as a whole is not a FRU. Instead, it contains FRUs as its components. Before disassembling the LCD module, make sure it has been detached from the base cover. Refer to “Remove the LCD module” on page 33 for instructions. Remove the LCD bezel Step 1. Gently pull the LCD bezel along the inner edges. ( 1 ) Step 2. Pry the hinge cap at the illustrated positions. b b a a a c a Step 3. Detach the LCD bezel. Refer to Table 15 “Part numbers for LCD FRUs” on page 44 to look up the Lenovo part numbers for the replacement LCD bezels. Remove the LCD panel Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD bezel” on page 38 Step 1. Remove the screws. 38 Hardware Maintenance Manual a a a a Figure 6. Remove 4 screws Table 12. Screw specifications — removing the LCD panel Screw location Quantity Specifications LCD panel to LCD base cover 4 M2 × 3 mm Step 2. Holding the upper edge of the LCD panel, slowly lift up the LCD panel 3 . Attention: Do not remove the LCD panel at this step. The LCD panel is connected by a cable at the back side. Detach the cable before removing the LCD panel. Step 3. From the back of the LCD panel, disconnect the eDP cable. b c a Note: Open the metal bracket and then disconnect the eDP cable. Step 4. Remove the LCD panel. Refer to Table 15 “Part numbers for LCD FRUs” on page 44 to look up the Lenovo part numbers for the following replacement parts. LCD panel Chapter 5. Removing a FRU or CRU 39 Remove the hinges Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD bezel” on page 38 “Remove the LCD panel” on page 38 Step 1. Remove 10 screws. b b a a a a a a a aa a Table 13. Screw specifications — removing the hinges and the WLAN antennas Screw location Quantity Specifications hinges to LCD base cover 10 M2 × 3 mm Step 2. Remove the hinges. Refer to Appendix A “Lenovo part numbers for replacement FRUs” on page 43 to look up the Lenovo part numbers for the following replacement parts. Hinges Remove the camera board and eDP cable Make sure the following FRUs (or CRUs) have been removed. “Remove the LCD bezel” on page 38 “Remove the LCD panel” on page 38 “Remove the hinges” on page 40 Step 1. Disconnect the eDP cable from the camera board. Step 2. Remove the eDP cable. 40 Hardware Maintenance Manual b a Step 3. Remove the camera board. a Refer to Appendix A “Lenovo part numbers for replacement FRUs” on page 43 to look up the Lenovo part numbers for the following replacement parts. eDP cable Camera board LCD base cover Chapter 5. Removing a FRU or CRU 41 42 Hardware Maintenance Manual Appendix A. Lenovo part numbers for replacement FRUs When servicing a customer’s computer, Lenovo service technicians may use part numbers listed in the following tables to order replacement parts through Lenovo CRM (customer relationship management) system. Table 14. Part numbers for FRUs (CRUs) No. FRU (CRU) category Parts description Lenovo part number 2 Upper case (with keyboard) Upper Case B 81ER W/KB US 5CB0R07036 Upper Case B 81ER W/KB UK 5CB0R07043 Upper Case B 81ER W/KB ITA 5CB0R07031 Upper Case B 81ER W/KB SPA 5CB0R07025 Upper Case B 81ER W/KB LSP 5CB0R07046 Upper Case B 81ER W/KB CFEn 5CB0R07022 Upper Case B 81ER W/KB FR 5CB0R07026 Upper Case B 81ER W/KB GE 5CB0R07047 Upper Case B 81ER W/KB ARA 5CB0R07033 Upper Case B 81ER W/KB HEB 5CB0R07034 Upper Case B 81ER W/KB NOD 5CB0R07035 Upper Case B 81ER W/KB BEL 5CB0R07038 Upper Case B 81ER W/KB SW 5CB0R07044 Upper Case B 81ER W/KB USI 5CB0R07028 Upper Case B 81ER W/KB ROM 5CB0R07029 Upper Case B 81ER W/KB CZE 5CB0R07023 Upper Case B 81ER W/KB POL 5CB0R07050 Upper Case B 81ER W/KB POR 5CB0R07039 3 System board MBB 81ER N3350 4G32GEMMC UMANOK 5B20R07042 4 WLAN & Bluetooth combo module Intel 7265 2x2AC+BT PCIE M.2 WLAN SW10H24548 5 USB board USB BOARD W/CABLE B 81ER 5C50R07030 6 USB brackets USB bracket(L+R) B 81ES 5B40Q79725 7 Battery pack © Copyright Lenovo 2018 43 Table 14. Part numbers for FRUs (CRUs) (continued) SP/A L17M3PB0 11.25V42Wh3cellbty 5B10Q13163 LG L17L3PB0 11.4V42Wh3cellbty 5B10Q13162 8 Speakers Speaker(L+R) B 81ES 5SB0Q79732 9 Back cover D COVER B 81ER 5CB0R07037 10 Screw pack SCREW PACK B 81ER 5S10R07024 Note: Refer to Appendix B “Lenovo part numbers for CRUs and miscellaneous parts” on page 45 to look up the Lenovo part numbers of ac power adapters and power cords. Table 15. Part numbers for LCD FRUs No. FRU (CRU) category Spare parts description Lenovo part number 1 LCD bezel LCD BEZEL B 81ER 5B30R07041 2 Camera board CAMERA 720P B 81ER 5C20R07049 3 LCD panel LCD PANEL B 81ER 5D10R07040 4 Hinges HINGE(L+R)B 81ER 5H50R07048 7 EDP cable EDP CABLE B 81ER 5C10R07027 8 LCD base cover LCD COVER B 81ER 5CB0R07045 44 Hardware Maintenance Manual Appendix B. Lenovo part numbers for CRUs and miscellaneous parts Part numbers for power cords, ac adapters, screw pack and rubber pack are listed in the following table. Note: The power cords and ac adapters are CRUs. Table 16. Part numbers for FRUs (CRUs) CRU category Parts description Lenovo part number Screw pack SCREW PACK B 81ER 5S10R07024 ac power adapter Chicony PD 3.0 45W 3pin SA10E75843 Liteon PD 3.0 45W 3pin SA10E75841 Chicony PD 3.0 45W 2pin SA10E75844 Liteon PD 3.0 45W 2pin SA10E75842 Delta PD 3.0 45W 2pin SA10E75840 Power cord LINETEK PC323+RVV300/300+LS15 1米电源线 145000600 LINETEK LS15+H03VV-F+LP39 1米电源线 145000599 LINETEK LS15+H03VV-F+LP-37 1米电源线 145000597 LINETEK LS15 H03VV-F LP26A 1米电源线 145000596 LINETEK LS15+H03VV-F+LP-41 1米电源线 145000595 LINETEK LP-30B + SPT-2 + LS15 1米电源线 145000594 LINETEK LP-61L+ H03VV-F+ LS15 1米电源线 145000593 LINETEK PE-361+ H05VV-F+ LS15 1米电源线 145000592 LINETEK LS15+H03VV-F+PE-336 1米电源线 145000591 LINETEK LS15+H05VV-F+LP-E04A 1米电源线 145000590 LINETEK LS15+H03VV-F+LP-23A 1米电源线 145000589 LINETEK LS15+VCTF+LP-53 1米电源线 145000588 LINETEK LS15+VCTF+LP-54 1米电源线 145000587 LINETEK LS15+H03VV-F+PE-364 1米电源线 145000586 LINETEK LP-34+H03VV-F + LS15 1米电源线 145000585 Longwell LSG-31+RVV300/300+LS-18 1米电源线 145000568 Longwell LP-24+H03VV-F+LS-18 1米电源线 145000567 Longwell LP-40+H03VV-F+LS-18 1米电源线 145000566 Longwell LP-37+H03VV-F+LS-18 1米电源线 145000565 Longwell LP-46+H03VV-F+LS-18 1米电源线 145000564 © Copyright Lenovo 2018 45 Table 16. Part numbers for FRUs (CRUs) (continued) Longwell LP-41+H03VV-F+LS-18 1米电源线 145000563 Longwell LP-30B+SPT-2 18AWG+LS-18 1米电源线 145000562 Longwell LP-61L+H03VV-F+LS-18 1米电源线 145000561 Longwell LP-67+BIS+LS-18 1米电源线 145000560 Longwell LP-22+H03VV-F+LS-18 1米电源线 145000559 Longwell LP-486+KTLH03VV-F+LS-5 1米电源线 145000558 Longwell LP-23A+LFC-3R+LS-18 1米电源线 145000557 Longwell LP-71+VCTF+LS-33 1米电源线 145000556 Longwell LP-54+VCTF+LS-18 1米电源线 145000555 Longwell LP-39+H03VV-F+LS-18 1米电源线 145000554 Longwell LP-34A+H03VV-F+LS-18 1米电源线 145000553 VOLEX GB10S3+RVV 300/500+VAC5S 1米电源线 145000538 Volex US15S3+SPT-2 ＋VAC5S 1米电源线 145000537 VOLEX MP5004+H03VV-F+VAC5S 1米电源线 145000605 VOLEX MP232+H03VV-F+VAC5S 1米电源线 145000524 VOLEX IT10S3+HO3VV-F+VAC5S 1米电源线 145000535 VOLEX MP233D+H03VV-F+VAC5S 1米电源线 145000534 VOLEX M2511+KETI IEC+VAC5S 1米电源线 145000533 VOLEX AU10S3+H03VV-F+VAC5S 1米电源线 145000532 VOLEX TW15CS3+VCTF+VAC5S 1米电源线 145000531 VOLEX VAC5S+VCTF+M755 1米电源线 145000530 VOLEX VA2073+H03VV-F+VAC5S 1米电源线 145000528 VOLEX CH10S3+H03VV-F+VAC5S 1米电源线 145000527 VOLEX SI16S3+H03VV-F+VAC5S 1米电源线 145000526 VOLEX M2511+HO3VV-F+VAC5S 1米电源线 145000525 lux 0036+RVV 300/300 0.75/3C+0002 1米电源线 145500003 lux 0040+H03VV-F 0.75/3C+0011 1米电源线 145500015 lux 0048+H03VV-F 0.75/3C+0011 1米电源线 145500014 lux 0027+H03VV-F 0.75/3C+0011 1米电源线 145500013 lux 0034+H03VV-F 0.75/3C+0011 1米电源线 145500011 lux 0041+H03VV-F 0.75/3C+0011 1米电源线 145500012 lux 0014+SPT-2 60℃ 18/3C+0016 1米电源线 145500002 lux 0014+H03VV-F 0.75/3C+0011 1米电源线 5L60J33143 lux 0031+H03VV-F 0.75/3C+0011 1米电源线 145500000 lux 0046+IS694 0.75/3C+0011 1米电源线 145500004 lux 0029+H03VV-F 0.75/3C+0011 1米电源线 145500009 lux 0033+H03VV-F 0.75/3C+0011 1米电源线 145500008 46 Hardware Maintenance Manual Table 16. Part numbers for FRUs (CRUs) (continued) lux 0038+H03VV-F 0.75/3C+0011 1米电源线 145500006 lux 0019+VCTF 0.75/3C+0021 1米电源线 145500007 lux 0018(E)+VCTF 0.75/3C+0021 1米电源线 145500005 lux 0044+H03VV-F 0.75/3C+0011 1米电源线 145500010 lux 0033+H03VV-F 0.75/3C+0011 1米电源线 145500001 LINETEK PC205+RVV 0.75/2C+LS7H 1米电源线 145500018 LINETEK LP40+H03VVH2-F+LS7H 1米电源线 145500030 LINETEK LP25+H03VVH2-F+LS7H 1米电源线 145500028 LINETEK LP45+H03VV-F+LS7H 1米电源线 145500029 LINETEK LP5+SPT-2 #18/2C+ LS7H 1米电源线 145500021 LINETEK LP61L+H03VVH2-F+ LS7H 1米电源线 145500019 LINETEK LP28+IS:694 0.75/2C+ LS7H 1米电源线 145500020 LINETEK LPE03A+H03VVH2-F+LS7H 1米电源线 145500025 LINETEK LP15A+H03VVH2-F+LS7H 1米电源线 145500023 LINETEK LP51A+VCTFK 0.75/2C+LS7H 1米电源线 145500027 LINETEK LP51A+HVCTFK 0.75/2C+LS7H 1米电源线 145500026 LINETEK PE364("O")+H03VVH2-F+LS7H 1米电源线 145500024 LINETEK LP21+H03VVH2-F+ LS7H 1米电源线 145500022 Longwell LSG-21+RVV300/300+LS-72 1米电源线 145500069 Longwell LP-16+H03VVH2-F+LS-7 1米电源线 145500070 Longwell LP-18A+H03VVH2-F+LS-18 1米电源线 145500071 Longwell LP-55+H03VVH2-F+LS-7 1米电源线 145500072 Longwell LP-11+SPT-2+LS-7C/7J 1米电源线 145500073 Longwell LP-61L+H03VVH2-F+ LS-7 1米电源线 145500074 Longwell LP-77+Longwell-p 2X+LS-7 1米电源线 145500075 Longwell LP-57+H03VVH2-F+LS-7KS 1米电源线 145500076 Longwell LP-15A+LFC-2F+LS-7 1米电源线 145500077 Longwell LP-70+VCTFK+LS-31 1米电源线 145500078 Longwell LP-51A+VCTFK+LS-7C/7J 1米电源线 145500079 Longwell LP-39+H03VVH2-F+LS-7 1米电源线 145500080 Longwell LP-21+ H03VVH2-F+LS-7 1米电源线 145500081 Lux 2pin 1M C7 cord Thailand type 5L60J39488 Appendix B. Lenovo part numbers for CRUs and miscellaneous parts 47 48 Hardware Maintenance Manual Appendix C. Label locations a c b Figure 7. Label layout on the back side of the back cover Labels attached to the base cover are country/region specific. If you need to replace the back cover of customer's computer, apply the appropriate labels to the replacement back cover. Table 17. All base cover labels Label Label description Applied country/region Label dimensions a Rating label all 66 mm x 24 mm b Rating label (printed at factory) all 43 mm x 24 mm c� Radio certification label ICASA label South Africa 20 mm x 10 mm Israel label Israel 32 mm x 10 mm Anatel label Brazil 35 mm x 5 mm FCC/IC ID label USA, Canada 32 mm x 10 mm Malaysia label Malaysia 8 mm x 8 mm EU RED label European Union 78 mm x 27 mm Japan radio label Japan 57 mm x 33 mm Indonesia radio label Indonesia 15 mm x 10 mm Note: Radio certification labels are country/region specific. Only the certification label for the country/region that the product is shipped is attached. Not all countries/regions include certification labels. © Copyright Lenovo 2018 49 50 Hardware Maintenance Manual Trademarks Lenovo and the “lenovo” logo are trademarks of Lenovo in the United States, other countries or both: Other company, product, or service names may be trademarks or service marks of others.