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Lenovo ThinkPad T420s Hardware Maintenance Manual
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Lenovo ThinkPad T420s Hardware Maintenance Manual

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Hardware Maintenance Manual
ThinkPad T420s and T420si
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Summary of Contents for Lenovo ThinkPad T420s

  • Page 1 Hardware Maintenance Manual ThinkPad T420s and T420si Downloaded from LpManual.com Manuals...
  • Page 2 Appendix A “Notices” on page 143. Seventh Edition (June 2013) © Copyright Lenovo 2011, 2013. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No.

  • Page 3: Table Of Contents

    FRU ....67 System supporting the Lenovo diagnostics Before servicing ThinkPad T420s and T420si programs ....
  • Page 4 1140 Bluetooth-wireless radio switch FPC ..Miscellaneous parts ... . 1150 System board, fan assembly, 34-mm ac power adapter ... . . ExpressCard reader, and base cover .

  • Page 5: About This Manual

    ® This manual contains service and reference information for the following ThinkPad products. ThinkPad T420s and T420si Machine types (MT) 4170, 4171, 4172, 4173, 4174, 4175, and 4176 Use this manual along with the advanced diagnostic tests to troubleshoot problems.
  • Page 6 Hardware Maintenance Manual Downloaded from LpManual.com Manuals...

  • Page 7: Chapter 1. Safety Information

    • 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. © Copyright Lenovo 2011, 2013 Downloaded from LpManual.com Manuals...

  • Page 8: Electrical Safety

    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.

  • Page 9: Safety Inspection Guide

    – 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.

  • Page 10: Grounding Requirements

    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.
  • Page 11 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information Downloaded from LpManual.com Manuals...
  • Page 12 DANGER DANGER DANGER Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 13 Chapter 1 Safety information Downloaded from LpManual.com Manuals...
  • Page 14 Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 15 PERIGO PERIGO PERIGO PERIGO PERIGO Chapter 1 Safety information Downloaded from LpManual.com Manuals...
  • Page 16 PERIGO PERIGO PERIGO Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 17 DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information Downloaded from LpManual.com Manuals...
  • Page 18 DANGER DANGER DANGER Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 19 VORSICHT VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information Downloaded from LpManual.com Manuals...
  • Page 20 VORSICHT VORSICHT VORSICHT Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 21 Chapter 1 Safety information Downloaded from LpManual.com Manuals...
  • Page 22 Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 23 Chapter 1 Safety information Downloaded from LpManual.com Manuals...
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  • Page 25 Chapter 1 Safety information Downloaded from LpManual.com Manuals...
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  • Page 27 Chapter 1 Safety information Downloaded from LpManual.com Manuals...
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  • Page 29 Chapter 1 Safety information Downloaded from LpManual.com Manuals...

  • Page 30: Laser Compliance Statement (Multilingual Translations)

    Laser compliance statement (multilingual translations) The laser compliance statements in this section are provided in the following languages: • English • Arabic • Brazilian Portuguese • French • German • Hebrew • Japanese • Korean • Spanish • Traditional Chinese Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 31 Chapter 1 Safety information Downloaded from LpManual.com Manuals...
  • Page 32 Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 33 Chapter 1 Safety information Downloaded from LpManual.com Manuals...
  • Page 34 Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 35 Chapter 1 Safety information Downloaded from LpManual.com Manuals...
  • Page 36 Hardware Maintenance Manual Downloaded from LpManual.com Manuals...

  • Page 37: Chapter 2. Important Service Information

    – “FRU identification for CTO, CMV, and GAV products” on page 33 Important: • Advise customers to contact the Lenovo Customer Support Center if they need any assistance in obtaining or installing any software fixes, drivers, and UEFI BIOS downloads. Telephone numbers for Lenovo Support are available at:http://www.lenovo.com/support/phone...

  • Page 38: Strategy For Replacing A Hard Disk Drive

    Dynamic Configure To Order (CTO) This provides the ability for a customer to configure a Lenovo solution from an eSite, and have this configuration sent to fulfillment, where it is built and shipped directly to the customer. The machine label, Product Entitlement Warehouse (PEW), eSupport, and the HMM will load these products as the 4-digit MT and 3-digit model, where model = “CTO”...

  • Page 39: Fru Identification For Cto, Cmv, And Gav Products

    (this is the same record found in PEW). eSupport can be accessed at http://www.lenovo.com/support. To view the warranty status of the key commodities on your computer, do the following: 1.
  • Page 40 1. Go to http://www.lenovo.com/support. 2. Click Parts & Accessories. 3. Provide your product information or click Launch to automatically identify your product. 4. Click Product & Parts Detail. 5. On the PRODUCT AND PARTS DETAIL page, click Parts Detail to view the complete list of FRUs.

  • Page 41: Chapter 3. General Checkout

    “What to do first” on page 35 • “Checkout guide” on page 36 – “System supporting the Lenovo ThinkVantage Toolbox program and the PC-Doctor for DOS diagnostics program” on page 36 – “System supporting the Lenovo diagnostics programs” on page 40 •...

  • Page 42: Checkout Guide

    System supporting the Lenovo ThinkVantage Toolbox program and the PC-Doctor for DOS diagnostics program The section provides information about ThinkPad computers that support the Lenovo ThinkVantage Toolbox ® program and the PC-Doctor for DOS diagnostics program. Some descriptions might not apply to your particular computer.
  • Page 43 Note: PC-Doctor for DOS is available at the following Web site: http://www.lenovo.com/supportTo create the PC-Doctor diagnostic CD, follow the instructions on the Web site. For some possible configurations of the computer, PC-Doctor might not run correctly. To avoid this problem, you need to initialize the computer setup by use of the ThinkPad Setup before you run PC-Doctor.
  • Page 44 Diagnostics Interactive Tests Hardware Info Utility Quit F1=Help Run Normal Test Run Quick Test CPU/Coprocessor System Memory Systemboard Video Adapter Fixed Disks Diskette Drives Other Devices Communication Wireless LAN PC-DOCTOR 2.0 Copyright 2008 PC-Doctor, Inc. All Rights Reserved. Use the cursor keys and ESC to move in menus. Press ENTER to select. The options on the test menu are as follows: Diagnostics Interactive Tests...
  • Page 45 While the Windows operating system is running, press the ThinkVantage button. To start this program, do the following: • Click Start ➙ Control Panel ➙ System and Security ➙ Lenovo - System Health and Diagnostics. Windows Vista and Windows XP: Click Start ➙...

  • Page 46: System Supporting The Lenovo Diagnostics Programs

    Touch Pad does not correct the problem, continue with the following: • Interactive Tests ➙ Mouse. System supporting the Lenovo diagnostics programs The section provides information about ThinkPad computers that support the Lenovo diagnostics programs. Some descriptions might not apply to your particular computer. The Lenovo diagnostics programs include following: •...
  • Page 47 F12 key. 3. Press the Tab key to switch to the Application Menu window. 4. Use the arrow keys to select Lenovo Diagnostics and then press Enter. The main screen of the UEFI diagnostic program is displayed.

  • Page 48: Power System Checkout

    If the computer you are servicing is not installed with the UEFI diagnostic program, you can download a bootable diagnostic program from the Lenovo Support Web site. The bootable diagnostic programs enable you to test computer memory and internal storage devices, view system information, and check and recover the internal storage devices.

  • Page 49: Checking The Ac Power Adapter

    2. Remove the battery pack. 3. Connect the ac power adapter. 4. Check that power is supplied when you turn on the computer. 5. Turn off the computer. 6. Disconnect the ac power adapter and install the charged battery pack. 7.

  • Page 50: Checking Operational Charging

    Checking operational charging To check whether the battery charges properly during operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer. Perform operational charging. If the battery status indicator or icon does not turn on, remove the battery pack and let it return to room temperature.
  • Page 51 5. Measure the voltage of the backup battery. See the following figure. Wire Voltage (V dc) +2.5 to +3.2 Black Ground • If the voltage is correct, replace the system board. • If the voltage is not correct, replace the backup battery. •...
  • Page 52 Hardware Maintenance Manual Downloaded from LpManual.com Manuals...

  • Page 53: Chapter 4. Related Service Information

    “Symptom-to-FRU index” on page 52 Service Web site: When the latest maintenance diskette and the system program service diskette become available, they will be posted on http://www.lenovo.com/support Restoring the factory contents by using Product Recovery discs When the hard disk drive (HDD) or solid-state drive (SSD) is replaced because of a failure, no Product Recovery program is on the new drive.
  • Page 54 The recovery disc set consists of the user instructions and the following set of DVDs to restore the computer to the original factory configuration. ® Operating System Recovery Disc (one disc) This disc restores the Microsoft Windows operating system. Use this disc to start the recovery process. Applications and Drivers Recovery Disc (one or This disc restores the preinstalled applications and drivers on the computer.

  • Page 55: Passwords

    If it has, it can be used for access to the hard disk drive. If no master hard disk password is available, neither Lenovo nor Lenovo authorized service technicians provide any services to reset either the user or the master hard disk password, or to recover data from the hard disk drive. The hard disk drive can be replaced for a scheduled fee.

  • Page 56: How To Remove The Hard Disk Password

    Attention: If User only mode is selected and the user hard disk password has been forgotten and cannot be made available to the service technician, neither Lenovo nor Lenovo authorized service technicians provide any services to reset the user hard disk passwords or to recover data from the hard disk drive. The hard disk drive can be replaced for a scheduled fee.

  • Page 57: Sleep (Standby) Mode

    1. Press Fn+F3. A panel for selecting a power plan (in Windows XP, power scheme) appears. 2. Select Power off display (keep current power plan) (in Windows XP, keep current power scheme). You can also put the computer into screen blank mode, press ThinkVantage button and use the ThinkVantage Productivity Center.

  • Page 58: Symptom-To-Fru Index

    Note: If the computer enters the hibernation mode while it is docked to the docking station, do not undock it before resuming normal operation. If you do undock it and then try to resume normal operation, you will get an error message, and you will have to restart the system. To cause the computer to enter hibernation mode, do any of the following: •...

  • Page 59: Numeric Error Codes

    Numeric error codes Table 2. Numeric error codes Symptom or error FRU or action, in sequence 0177 System board. Bad SVP data, stop POST task—The checksum of the supervisor password in the EEPROM is not correct. 0182 1. Run ThinkPad Setup. Press F9, and Enter to load Bad CRC2.

  • Page 60: Error Messages

    System board. This system does not support batteries that are not Replace the battery. genuine Lenovo-made or authorized. The system will continue to boot, but may not charge unauthorized batteries. ATTENTION: Lenovo has no responsibility for the performance or safety of unauthorized batteries, and provides no warranties for failures or damage arising out of their use.

  • Page 61: No-Beep Symptoms

    • This policy applies to all ThinkPad Notebooks purchased on 1 January, 2008 or later. • Lenovo will not provide replacement if the LCD is within specification as we cannot guarantee that any replacement LCD will have zero pixel defects.

  • Page 62: Intermittent Problems

    Table 6. LCD-related symptoms (continued) FRU or action, in sequence Symptom or error • LCD screen unreadable. 1. See important note for “LCD-related symptoms.” • Characters missing pixels. 2. Reseat all LCD connectors. • Screen abnormal. 3. LCD assembly. • Wrong color displayed. 4.

  • Page 63: Chapter 5. Status Indicators

    Chapter 5. Status indicators This chapter presents the system status indicators that show the status of the computer. © Copyright Lenovo 2011, 2013 Downloaded from LpManual.com Manuals...
  • Page 64 Table 7. Status indicators Indicator Meaning Speaker mute Orange: The speaker is on mute. To set the speakers on mute or unmute, press the speaker mute button. Microphone mute Orange: The microphone is on mute. None of the recording devices is available while the microphone mute is on by default.
  • Page 65 Table 7. Status indicators (continued) Indicator Meaning Sleep (standby for Green: The computer is in sleep (standby) mode. Windows XP) status Blinking The computer is entering sleep (standby) mode or hibernation mode, green: or is resuming normal operation. Battery status Green: The battery charge level is 20% or higher.
  • Page 66 Hardware Maintenance Manual Downloaded from LpManual.com Manuals...

  • Page 67: Chapter 6. Fn Key Combinations

    Fn+F7 combination is available for switching a display output location. For Windows 7: Switch a display output location • Computer display only (LCD) • Computer display and external monitor (same image) • Computer display and external monitor (extended desktop) © Copyright Lenovo 2011, 2013 Downloaded from LpManual.com Manuals...
  • Page 68 Table 8. Fn key combinations (continued) Key combination Description • External monitor only Note: To switch between the computer display and an external monitor, the Win+P key combination is also available. For Windows Vista and Windows XP: Switch a display output location •...

  • Page 69: Chapter 7. Fru Replacement Notices

    CRU; and (2) you may be charged for the replacement CRU if Lenovo does not receive the defective part within thirty (30) days of your receipt of the replacement CRU. See your Lenovo Limited Warranty documentation for full details.

  • Page 70: Retaining Serial Numbers

    If you replace the system board, you must restore the serial number of the system unit to its original value. Before replacing the system board, save the original serial number by doing the following: 1. Install the LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later, and restart the computer.

  • Page 71: Retaining The Uuid

    When you replace the system board, you must set the UUID on the new system board as follows: 1. Install the LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later, and restart the computer. 2. From the main menu, select 4. Assign UUID. A new UUID is created and written. If a valid UUID already exists, it is not overwritten.
  • Page 72 Hardware Maintenance Manual Downloaded from LpManual.com Manuals...

  • Page 73: Chapter 8. Removing And Replacing A Fru

    CRU; and (2) you may be charged for the replacement CRU if Lenovo does not receive the defective part within thirty (30) days of your receipt of the replacement CRU. See your Lenovo Limited Warranty documentation for full details.

  • Page 74: 1010 Battery Pack

    Some models of the ThinkPad T420s and T420si you are servicing might have the SIM card that the customer has installed. If the computer you are servicing has the SIM card, remove it before you start the servicing. To remove the SIM card, you need to remove the battery pack first. (See 1010 Battery pack.) After you finish the servicing, make sure that you insert the card back into the slot firmly.

  • Page 75: 1020 Serial Ultrabay Slim Device Or Travel Bezel

    The only exception to this is if the battery pack is physically damaged or a customer is reporting a possible safety issue. If Lenovo ThinkVantage Toolbox is not installed in the computer, the customer should download this program before a non-physically damaged battery pack is replaced. Note that the replacement of a physically damaged battery pack is not covered by the warranty.

  • Page 76: 1030 Solid-State Drive (Ssd) Or Hard Disk Drive (Hdd)

    Table 10. Removal steps of Serial Ultrabay Slim device or travel bezel Holding the bay lock latch in the unlocked position , slide the bay eject latch in the direction shown by arrow , and then pull out the Serial Ultrabay Slim device or the travel bezel in the direction shown by arrow completely remove it 1030 Solid-state drive (SSD) or hard disk drive (HDD) For access, remove the FRU:...
  • Page 77 Removal steps of SSD or HDD Step Screw (quantity) Color Torque M3 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) When installing: Make sure that the SSD or HDD is firmly attached. Chapter 8 Removing and replacing a FRU Downloaded from LpManual.com Manuals...

  • Page 78: 1040 Dimm

    For HDD and HDD rubber rails: For SSD and SSD spacers: 1040 DIMM For access, remove this FRU: • “1010 Battery pack” on page 68 Removal steps of DIMM Note: Remove the screws Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 79 Torque Step Screw (quantity) Color M2 × 5 mm, flat-head, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm) Chapter 8 Removing and replacing a FRU Downloaded from LpManual.com Manuals...

  • Page 80: 1050 Pci Express Mini Card For Wireless Lan

    When installing: Insert the notched end of the DIMM into the socket. Press the DIMM in firmly, and pivot it until it snaps into place. Make sure that it is firmly attached in the slot and does not move easily. 1050 PCI Express Mini Card for wireless LAN For access, remove this FRU: •...
  • Page 81 Torque Step Screw (quantity) Color M2 × 5 mm, flat-head, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm) Note: Some models might have only two antenna cables. Chapter 8 Removing and replacing a FRU Downloaded from LpManual.com Manuals...
  • Page 82 Step Screw (quantity) Color Torque M2 × 3 mm, small-head, nylon-coated (1) Silver 0.181 Nm (1.85 kgf-cm) Hardware Maintenance Manual Downloaded from LpManual.com Manuals...

  • Page 83: 1060 Pci Express Mini Card For Wireless Wan

    When installing: • In models with a wireless LAN card that has two antenna connectors, plug the gray cable into the jack labeled MAIN or M, and the black cable into the jack labeled AUX or A on the card. If the computer you are servicing has three cables, put the white cable in the cable protection tube.
  • Page 84 Torque Step Screw (quantity) Color M2 × 5 mm, flat-head, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm) Hardware Maintenance Manual Downloaded from LpManual.com Manuals...

  • Page 85: 1070 4-In-1 Media Card Reader

    Step Screw (quantity) Color Torque M2 × 3 mm, small-head, nylon-coated (1) Silver 0.181 Nm (1.85 kgf-cm) When installing: Plug the orange cable into the jack labeled MAIN, and the blue cable into the jack labeled AUX on the card. 1070 4–in–1 media card reader For access, remove this FRU: •...

  • Page 86: 1080 Keyboard

    Removal steps of 4–in–1 media card reader 1080 Keyboard For access, remove this FRU: • “1010 Battery pack” on page 68 Removal steps of keyboard Note: Remove the screws Torque Step Screw (quantity) Color M2 × 5 mm, flat-head, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm)
  • Page 87 Torque Step Screw (quantity) Color M2 × 5 mm, flat-head, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm) Slightly press the keyboard and slide it a little bit forward, in the direction shown by arrow , to detach the front edge of the keyboard from the frame. Then, lift up the keyboard in the direction shown by arrow Lift the keyboard a little in the direction shown by arrow , and then detach the connector Chapter 8...
  • Page 88 Installation steps of keyboard When installing the keyboard, do the following: 1. Attach the keyboard connector. Hardware Maintenance Manual Downloaded from LpManual.com Manuals...

  • Page 89: 1090 Backup Battery

    2. Attach the keyboard so that the keyboard edge is under the frame as shown in the following figure. 3. Gently press the keys with your palms and slightly slide the keyboard toward you until it snaps into position. 4. Secure the keyboard by tightening the screws from the bottom side of the computer. 1090 Backup battery For access, remove these FRUs in order: •...

  • Page 90: 1100 Palm Rest With Fingerprint Reader, Smart Card Reader, And Speaker

    • “1080 Keyboard” on page 80 DANGER Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode. Removal steps of backup battery When installing: Attach the backup battery in the insulation sheet as shown in the figure below and make sure that the battery connector is attached firmly.
  • Page 91 Note: In models with the fingerprint reader, the sensor is attached to the palm rest FRU. If the fingerprint reader is defective, you can replace the palm rest by following the procedures in this section. The replacement procedures are the same for a palm rest with or without a fingerprint reader. Removal steps of palm rest or palm rest with fingerprint reader Step Screw (quantity)
  • Page 92 Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 93 Removal steps of smart card reader Step Screw (quantity) Color Torque M2 × 3 mm, flat-head, nylon-coated (5) Silver 0.181 Nm (1.85 kgf-cm) Chapter 8 Removing and replacing a FRU Downloaded from LpManual.com Manuals...

  • Page 94: 1110 Lcd Unit

    Removal steps of speaker Step Screw (quantity) Color Torque 0.181 Nm M2 × 3 mm, flat-head, nylon-coated (4) Silver (1.85 kgf-cm) 1110 LCD unit For access, remove these FRUs in order: • “1010 Battery pack” on page 68 • “1080 Keyboard” on page 80 •...
  • Page 95 Removal steps of LCD unit Step Screw Screw (quantity) Color Torque M2.5 × 5 mm, flat-head, nylon-coated (2) Black 0.392 Nm (4.0 kgf-cm) Chapter 8 Removing and replacing a FRU Downloaded from LpManual.com Manuals...

  • Page 96: 1120 Dc-In Sub Card

    When installing • Make sure that you route the cables firmly and tape up in the proper positions as shown in the figure above. • When you route the cables, make sure that they are not subjected to any tension. Tension could cause the cables to be damaged by the cable guides, or a wire to be broken.

  • Page 97: 1130 Bluetooth Daughter Card (Bdc-3.0)

    Torque Step Screw (quantity) Color M2 × 3 mm, shoulder-socket head, nylon-coated (1) Silver 0.181 Nm (1.85 kgf-cm) 1130 Bluetooth daughter card (BDC-3.0) • “1010 Battery pack” on page 68 • “1030 Solid-state drive (SSD) or hard disk drive (HDD)” on page 70 •...
  • Page 98 • “1060 PCI Express Mini Card for wireless WAN” on page 77 • “1070 4–in–1 media card reader” on page 79 • “1080 Keyboard” on page 80 • “1100 Palm rest with fingerprint reader, smart card reader, and speaker” on page 84 •...

  • Page 99: 1150 System Board, Fan Assembly, 34-Mm Expresscard Reader, And Base Cover

    1150 System board, fan assembly, 34-mm ExpressCard reader, and base cover Important notices for handling the system board: When handling the system board, read the following: • The system board has an accelerometer, which can be broken when several thousands of G-forces are applied.
  • Page 100 • “1070 4–in–1 media card reader” on page 79 • “1080 Keyboard” on page 80 • “1100 Palm rest with fingerprint reader, smart card reader, and speaker” on page 84 • “1110 LCD unit” on page 88 • “1120 DC-in sub card” on page 90 •...
  • Page 101 Torque Step Screw (quantity) Color M 2 × 9 mm, flat head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) M2 × 3 mm, flat head, nylon-coated (1) Silver 0.181 Nm (1.85 kgf-cm) Step Screw (quantity) Color Torque M2 × 5 mm, big-head, nylon-coated (4) Black 0.181 Nm (1.85 kgf-cm)
  • Page 102 In step , remove the system board with fan assembly together from the base cover assembly. Turn the system board over, and then disconnect the fan assembly from the system board. Step Screw (quantity) Color Torque M2 × 5 mm, big-head, nylon-coated (4) Black 0.181 Nm (1.85 kgf-cm)
  • Page 103 • Make sure that the fan connector is attached firmly. Remove the three screws and then remove the 34-mm ExpressCard reader from the system board. Step Screw (quantity) Color Torque M2 × 3 mm, flat-head, nylon-coated (3) Silver 0.181 Nm (1.85 kgf-cm) Chapter 8 Removing and replacing a FRU...
  • Page 104 Applying labels to the base cover: The new base cover FRU is shipped with a kit containing labels of several kinds. The following illustration shows the location of each label. Note: If the Windows Certificate of Authentication label (COA) is attached to a part that is replaced, return the old part with the label attached to the customer, or provide a letter to the customer stating what the label was originally on the system and what the label part number, serial number, and product key were.

  • Page 105: 1160 Msata

    IMEI/ESN label Onboard LAN MAC address label China Telecom label China 3G WWAN label Taiwan WWAN label Product label For some models, you may need to apply two FCC labels. Check the old base cover; if it has two FCC labels, apply both to the new base cover.
  • Page 106 Torque Step Screw (quantity) Color M2 × 3 mm, small-head, nylon-coated (1) Silver 0.181 Nm (1.85 kgf-cm) Hardware Maintenance Manual Downloaded from LpManual.com Manuals...

  • Page 107: 2010 Lcd Bezel Assembly

    2010 LCD bezel assembly For access, remove this FRU: • “1010 Battery pack” on page 68 Removal steps of LCD bezel assembly Torque Step Screw Screw (quantity) Color Black 0.181 Nm M2 × 5 mm, shoulder-socket head, nylon-coated (2) (1.85 kgf-cm) Chapter 8 Removing and replacing a FRU Downloaded from LpManual.com Manuals...

  • Page 108: 2020 Lcd Panel

    2020 LCD panel For access, remove these FRUs, in order: • “1010 Battery pack” on page 68 • “2010 LCD bezel assembly” on page 101 The LCD panel and the peripheral parts used in this product are very sensitive. Improper handling of the LCD panel can cause damage to the parts, and may cause a system malfunction such as a missing dot, missing line, or pixel problems.
  • Page 109 Removal steps of LCD panel Attention: Unplug the LCD cable by holding the left and right edges of the connector with your fingers, and gently pull the connector toward you. Do not unplug the cable by pulling it. Applying tension to the cable could cause the cable to be damaged or a wire to be broken.

  • Page 110: 2030 Integrated Camera, Microphone, Or Hall Sensor Card

    When installing: When attaching the LCD panel to the cover, gently press the left and right edges covered with metal. Do not press the surface of the panel or apply any excessive force to the panel. 2030 Integrated camera, microphone, or hall sensor card For access, remove these FRUs, in order: •...
  • Page 111 Removal steps of integrated camera, microphone, or hall sensor card Step Screw (quantity) Color Torque M2 × 3 mm, small-head, nylon-coated (1) Silver 0.181 Nm (1.85 kgf-cm) When installing: Make sure that the connector of the integrated camera, microphone, or the hall sensor card is attached firmly. Chapter 8 Removing and replacing a FRU Downloaded from LpManual.com Manuals...

  • Page 112: 2040 Led Sub Card

    2040 LED sub card For access, remove these FRUs in order: • “1010 Battery pack” on page 68 • “2010 LCD bezel assembly” on page 101 • “2020 LCD panel” on page 102 Hardware Maintenance Manual Downloaded from LpManual.com Manuals...

  • Page 113: 2050 Lcd Cable

    Removal steps of LED sub card Step Screw (quantity) Color Torque M2 × 3 mm, small-head, nylon-coated (1) Silver 0.181 Nm (1.85 kgf-cm) When installing: Make sure that the connector is attached firmly. 2050 LCD cable For access, remove these FRUs in order: •...

  • Page 114: 2060 Hinge Kit

    • “2010 LCD bezel assembly” on page 101 • “2020 LCD panel” on page 102 • “2030 Integrated camera, microphone, or hall sensor card” on page 104 • “2040 LED sub card” on page 106 Removal steps of LCD cable Cable routing: When you install the LCD cable, route the cable as shown in the figure above.
  • Page 115 • “2020 LCD panel” on page 102 • “2030 Integrated camera, microphone, or hall sensor card” on page 104 • “2040 LED sub card” on page 106 • “2050 LCD cable” on page 107 Removal steps of hinge kit Step Screw (quantity) Color Torque...

  • Page 116: 2070 Led Cable

    2070 LED cable For access, remove these FRUs in order: • “1010 Battery pack” on page 68 • “1020 Serial Ultrabay Slim device or travel bezel” on page 69 • “1030 Solid-state drive (SSD) or hard disk drive (HDD)” on page 70 •...

  • Page 117: 2080 Antenna Kit And Lcd Rear Cover Assembly

    Removal steps of LED cable Cable routing: When you install the LED cable, route the cable as shown in the figure below. 2080 Antenna kit and LCD rear cover assembly For access, remove these FRUs in order: • “1010 Battery pack” on page 68 •...
  • Page 118 • “1110 LCD unit” on page 88 • “1120 DC-in sub card” on page 90 • “1140 Bluetooth-wireless radio switch FPC” on page 91 • “1150 System board, fan assembly, 34-mm ExpressCard reader, and base cover” on page 93 • “2010 LCD bezel assembly”...
  • Page 119 When you install the antenna kit, route the cables as shown in the figures below. As you route the cables, make sure that they are not subjected to any tension. Tension could cause the cables to be damaged by the cable guides, or a wire to be broken.
  • Page 120 Hardware Maintenance Manual Downloaded from LpManual.com Manuals...

  • Page 121: Chapter 9. Locations

    Chapter 9. Locations This chapter presents the locations of the ThinkPad T420s and T420si hardware components. Front view Wireless radio switch Integrated camera (for some models) ThinkLight light Fingerprint reader (for some models) Built-in microphone TrackPoint pointing stick ThinkVantage button...

  • Page 122: Rear View

    Rear view Status indicators DisplayPort connector 34-mm ExpressCard slot or 4-in-1 media card reader Always On USB connector slot Combo audio jack USB connector Ethernet connector USB connector ac power connector Monitor connector : For the description of each indicator, see Chapter 5 “Status indicators” on page 57. Bottom view Expansion slot (DIMM, PCI Express Mini Card for Battery pack latch...

  • Page 123: Chapter 10. Parts List

    CRU, Lenovo will ship the CRU to you. CRU information and replacement instructions are shipped with your product and are available from Lenovo at any time upon request. You may find a list of CRUs in the publications that ship with your product or at http://www.lenovo.com/CRUs. You may be required to return the defective part that is replaced by the CRU.

  • Page 124: Overall

    Overall Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 125 Table 11. Parts list—Overall No. FRU (Overall) FRU no. See “Miscellaneous parts” on page 133. LCD unit (see “LCD FRUs” on page 128.) 04W1451 N Keyboard bezel assembly, with fingerprint reader • 4170–CTO, 34x, 35x, 36x, 37x, 38x, 39x, 3Ax, 3Bx, 3Cx, 3Ex, 3Fx, 3Gx, 3Hx •...
  • Page 126 Table 11. Parts list—Overall (continued) No. FRU (Overall) FRU no. 60Y3253 Intel Centrino Advanced-N 6205 • 4170–CTO, 27x, 33x, 34x, 35x, 36x, 38x, 39x, 3Ax, 3Bx, 3Cx, 3Dx, 3Fx, 3Gx • 4171–CTO, 52x, 53x, 54x, 55x, 5Ax, 5Bx, 5Dx, 5Ex, 5Fx, 5Hx, 5Jx, 5Nx, 5Px, 5Rx, 5Tx, 5Ux, 5Vx, 5Xx, 5Yx, 5Zx, 62x, 63x, 64x, 65x, 66x, 68x, 6Ex, 6Gx, 6Hx, 6Jx, 6Rx, 6Sx, 6Tx, 6Ux, 6Vx, 6Wx, 6Xx, 6Yx, 6Zx, 73x, 75x, 76x, 77x, 78x, 79x, 7Ax, 7Bx, 7Cx, 7Dx, 7Ex, 7Fx •...
  • Page 127 Table 11. Parts list—Overall (continued) No. FRU (Overall) FRU no. Ericsson F5521gw Mobile Broadband Module 60Y3279 • 4170–CTO • 4171–CTO, 5Ax, 5Bx, 5Ex, 5Hx, 5Jx, 5Xx, 5Yx, 5Zx, 66x, 68x, 77x • 4172–CTO • 4173–CTO, J4x, JDx, JGx, JHx, JJx, JKx, JSx, JTx, K6x, K7x, K8x, KFx, KQx, KXx, KZx, L7x, LLx, LQx, LSx, LTx •...
  • Page 128 Table 11. Parts list—Overall (continued) No. FRU (Overall) FRU no. DVD rambo drive 45N7457 • 4170–CTO, 27x, 32x, 33x, 34x, 35x, 36x, 37x, 38x, 39x, 3Ax, 3Cx, 3Dx, 3Ex, 3Fx, 3Gx, 3Hx 45N7451 • 4171–CTO, 52x, 53x, 54x, 55x, 5Ax, 5Bx, 5Dx, 5Ex, 5Fx, 5Hx, 5Jx, 5Mx, 5Nx, 5Px, 5Rx, 45N7453 5Tx, 5Ux, 5Vx, 5Xx, 5Yx, 5Zx, 62x, 63x, 64x, 65x, 66x, 68x, 6Ex, 6Fx, 6Gx, 6Hx, 6Jx, 6Mx, 6Nx, 6Px, 6Qx, 6Rx, 6Sx, 6Tx, 6Ux, 6Vx, 6Wx, 6Xx, 6Yx, 6Zx, 72x, 73x, 74x, 75x, 76x, 77x,...
  • Page 129 Table 11. Parts list—Overall (continued) No. FRU (Overall) FRU no. 04W1717 * SSD spacer • 4170–CTO • 4171–CTO • 4172–CTO • 4173–CTO • 4174–CTO Hard disk drive, 250 GB, 5,400 rpm 42T1153 42T1167 • 4170–CTO • 4171–CTO, 5Bx, 62x, 64x, 68x 42T1213 •...
  • Page 130 Table 11. Parts list—Overall (continued) No. FRU (Overall) FRU no. 04W2002 N System board assembly, with Intel Core i5-2520M processor, integrated, AMT, TPM, AES • 4170–CTO, 27x, 34x, 3Ax, 3Bx, 3Hx • 4171–CTO, 52x, 55x, 5Ax, 5Bx, 5Fx, 5Jx, 5Nx, 5Xx, 6Fx, 6Gx, 6Sx, 6Tx, 6Wx, 6Yx, 77x, 78x, 7Gx •...
  • Page 131 Table 11. Parts list—Overall (continued) No. FRU (Overall) FRU no. 04W2008 N System board assembly, with Intel Core i5-2520M processor, Optimus, AMT, non-TPM, non-AES • 4170–CTO, 39x • 4171–CTO, 5Vx • 4172–CTO • 4173–CTO • 4174–CTO, N7x 04W2009 N System board assembly, with Intel Core i7-2620M processor, Optimus, AMT, non-TPM, non-AES •...
  • Page 132 Table 11. Parts list—Overall (continued) No. FRU (Overall) FRU no. 04W2016 N System board assembly, with Intel Core i5-2540M processor, integrated, non-AMT, non-TPM, non-AES • 4170–CTO • 4171–CTO • 4172–CTO • 4173–CTO • 4174–CTO 04W2017 N System board assembly, with Intel Core i5-2520M Optimus, none-AMT, none-TPM, none-AES •...
  • Page 133 Table 11. Parts list—Overall (continued) No. FRU (Overall) FRU no. 04W3612 N System board assembly, with Intel Core i7-2640M Optimus, none-AMT, none-TPM, AES • 4170–CTO • 4171–CTO • 4172–CTO • 4173–CTO • 4174–CTO System board assembly, with Intel Core i7-2640M integrated, AMT, TPM, AES 04W3613 N •...

  • Page 134: Lcd Frus

    Table 11. Parts list—Overall (continued) No. FRU (Overall) FRU no. TrackPoint caps 91P9642 — Thermal grease 91P8835 — ac power adapter (see “ac power adapter” on page 134.) LCD FRUs 14.1-inch HD+ TFT LCD (Table 12 “Parts list—14.1-inch HD+ TFT LCD” on page 129) Hardware Maintenance Manual Downloaded from LpManual.com Manuals...
  • Page 135 Table 12. Parts list—14.1-inch HD+ TFT LCD No. FRU (14.1-inch HD+ TFT LCD) FRU no. 04W1675 N LCD bezel assembly • 4170–CTO, 27x, 32x, 33x, 34x, 35x, 36x, 37x, 38x, 39x, 3Ax, 3Bx, 3Cx, 3Dx, 3Ex, 3Fx, 3Gx, 3Hx • 4171–CTO, 52x, 53x, 54x, 55x, 5Ax, 5Bx, 5Dx, 5Ex, 5Fx, 5Hx, 5Jx, 5Mx, 5Nx, 5Px, 5Rx, 5Tx, 5Ux, 5Vx, 5Xx, 5Yx, 5Zx, 62x, 63x, 64x, 65x, 66x, 68x, 6Ex, 6Fx, 6Gx, 6Hx, 6Jx, 6Mx, 6Nx, 6Px, 6Qx, 6Rx, 6Sx, 6Tx, 6Ux, 6Vx, 6Wx, 6Xx, 6Yx, 6Zx, 72x, 73x, 74x, 75x, 76x, 77x, 78x, 79x, 7Ax, 7Bx, 7Cx, 7Dx, 7Ex, 7Fx, 7Gx, 7Hx...
  • Page 136 Table 12. Parts list—14.1-inch HD+ TFT LCD (continued) No. FRU (14.1-inch HD+ TFT LCD) FRU no. Microphone sub card 04W1697 N • 4170–CTO, 27x, 32x, 33x, 34x, 35x, 36x, 37x, 38x, 39x, 3Ax, 3Bx, 3Cx, 3Dx, 3Ex, 3Fx, 3Gx, 3Hx •...
  • Page 137 Table 12. Parts list—14.1-inch HD+ TFT LCD (continued) No. FRU (14.1-inch HD+ TFT LCD) FRU no. LED cable assembly, with multitouch 04W1709 N • 4170–CTO • 4171–CTO • 4172–CTO • 4173–CTO • 4174–CTO LED sub card 04W1696 • 4170–CTO, 27x, 32x, 33x, 34x, 35x, 36x, 37x, 38x, 39x, 3Ax, 3Bx, 3Cx, 3Dx, 3Ex, 3Fx, 04W1697 3Gx, 3Hx •...

  • Page 138: Keyboard

    Table 12. Parts list—14.1-inch HD+ TFT LCD (continued) No. FRU (14.1-inch HD+ TFT LCD) FRU no. Hinge kit 04W3413 • 4170–CTO, 27x, 32x, 33x, 34x, 35x, 36x, 37x, 38x, 39x, 3Ax, 3Bx, 3Cx, 3Dx, 3Ex, 3Fx, 04W3414 3Gx, 3Hx • 4171–CTO, 52x, 53x, 54x, 55x, 5Ax, 5Bx, 5Dx, 5Ex, 5Fx, 5Hx, 5Jx, 5Mx, 5Nx, 5Px, 5Rx, 5Tx, 5Ux, 5Vx, 5Xx, 5Yx, 5Zx, 62x, 63x, 64x, 65x, 66x, 68x, 6Ex, 6Fx, 6Gx, 6Hx, 6Jx, 6Mx, 6Nx, 6Px, 6Qx, 6Rx, 6Sx, 6Tx, 6Ux, 6Vx, 6Wx, 6Xx, 6Yx, 6Zx, 72x, 73x, 74x, 75x, 76x, 77x, 78x, 79x, 7Ax, 7Bx, 7Cx, 7Dx, 7Ex, 7Fx, 7Gx, 7Hx...

  • Page 139: Miscellaneous Parts

    Table 13. Parts list—Keyboard (continued) Language FRU no. 45N2084 45N2154 45N2224 Greek (U.S. English and Greek layout) Hebrew 45N2085 45N2155 45N2225 Hungarian 45N2086 45N2156 45N2226 Icelandic 45N2087 45N2157 45N2227 Italian 45N2088 45N2158 45N2228 Japanese 45N2102 45N2172 45N2242 Kazakhstan 45N2089 45N2159 45N2229 Korean 45N2103...

  • Page 140: Ac Power Adapter

    ac power adapter Table 15. Parts list—2-pin ac power adapters FRU no. 2-pin (65 W, 20 V) adapter (models CTO, xxE, xxF, xxJ, xxL, xxP, xxS, xxU, xxY) 42T5282 92P1214 2-pin (65 W, 20 V) adapter (models CTO, xxE, xxF, xxJ, xxL, xxP, xxS, xxU, xxY) 2-pin (65 W, 20 V) adapter (models CTO, xxE, xxF, xxJ, xxL, xxP, xxS, xxU, xxY) 92P1159 2-pin (65 W, 20 V) adapter (models CTO, xxE, xxF, xxJ, xxL, xxP, xxS, xxU, xxY)

  • Page 141: Recovery Discs

    Table 18. Parts list—2-pin power cords (continued) FRU no. Country or region 42T5008 42T5093 Canada, U.S. • models -CTO, xxF, xxL, xxS, xxU Japan 42T5014 42T5099 • models -CTO, xxE, xxJ Table 19. Parts list—3-pin power cords Country or region FRU no.

  • Page 142: Windows Vista Home Basic (32 Bit) Dvds

    Windows XP Professional (32 bit) is preinstalled as the operating system in the following models: • 4170-CTO • 4171-CTO • 4172-CTO • 4173-CTO • 4174-CTO Table 20. Parts list—Windows XP Professional (32 bit) recovery DVDs Language English 03W8319 Japanese 03W8392 Windows Vista Home Basic (32 bit) DVDs Note: The Windows Vista recovery DVDs are available only for models with a valid Microsoft Windows Vista certificate of authenticity (COA) affixed to the system.

  • Page 143: Windows 7 Home Basic (32 Bit) Dvds

    Table 22. Parts list—Windows Vista Business (32 bit) recovery DVDs Language Indian English 04T3644 Japanese 04T3645 Windows 7 Home Basic (32 bit) DVDs Windows 7 Home Basic (32 bit) is preinstalled as the operating system in the following models: • 4170-CTO •...

  • Page 144: Windows 7 Ultimate (32 Bit) Dvds

    Windows 7 Ultimate (32 bit) DVDs Windows 7 Ultimate (32 bit) is preinstalled as the operating system in the following models: • 4170-CTO • 4171-CTO • 4172-CTO • 4173-CTO • 4174-CTO Table 25. Parts list—Windows 7 Ultimate (32 bit) recovery DVDs Language English 04T3656...

  • Page 145: Windows 7 Home Premium (64 Bit) Dvds

    Windows 7 Home Premium (64 bit) DVDs Windows 7 Home Premium (64 bit) is preinstalled as the operating system in the following models: • 4170-CTO, 3Ex • 4171-CTO • 4172-CTO • 4173-CTO • 4174-CTO, NNx Table 28. Parts list—Windows 7 Home Premium (64 bit) recovery DVDs Language Arabic (English-enable) 04T3700...

  • Page 146: Windows 7 Professional (64 Bit) Dvds

    • 4171-CTO, 6Fx, 6Gx, 6Yx • 4172-CTO • 4173-CTO, J7x, J8x, JCx, JDx, JEx, JHx, JTx, JVx, JWx, JXx, K9x, KQx, LDx • 4174-CTO, NTx, NVx Table 29. Parts list—Windows 7 Professional (32 bit) recovery DVDs Language C&L EMEA (Dutch/French/German/Italian/English) 04T3655 04T3654 C&L Nordics (Danish/Finnish/Swedish/Norwegian/English)

  • Page 147: Windows 7 Professional (32 Bit) Rapid Boot Dvds

    Table 30. Parts list—Windows 7 Professional (64 bit) recovery DVDs (continued) Language CRU ID 04T1414 German Hebrew/Enlish 04T3666 Hong Kong/Enlish 04T3667 04T3668 Hungarian/Enlish Japanese 04T3669 04T3670 Korean/English Polish 04T3671 Portuguese/Enlish 04T3672 04T3673 Romanian/Enlish Russian 04T3674 04T3675 Slovak/Enlish Spanish 04T3676 Serbian-Latin/Enlish 04T3677 04T3678 Turkish/Enlish...

  • Page 148: Common Service Tools

    USB floppy diskette drive tool kit Test card for integrated Smart Card 42W7820 — LENOVO ThinkPad Hardware Maintenance Diskette Version 1.76 or later Note: Download the file from the following Web site: http://www.lenovo.com/support Hardware Maintenance Manual Downloaded from LpManual.com Manuals...

  • Page 149: Appendix A. Notices

    Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead.

  • Page 150: Electronic Emissions Notices

    For electronic emission information on Class B digital devices, refer to the corresponding information in the User Guide. Trademarks The following terms are trademarks of Lenovo in the United States, other countries or both: Active Protection System Lenovo Rescue and Recovery...
  • Page 151 Downloaded from LpManual.com Manuals...
  • Page 152 Part Number: 0A60241_06 Printed in China (1P) P/N: 0A60241_06 *1P0A60241_06* Downloaded from LpManual.com Manuals...

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