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Lenovo ThinkPad T420i Hardware Maintenance Manual

Hardware maintenance manual
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ThinkPad T420 and T420i
Hardware Maintenance Manual

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Summary of Contents for Lenovo ThinkPad T420i

  • Page 1 ThinkPad T420 and T420i Hardware Maintenance Manual...
  • Page 2 Appendix A “Notices” on page 175. Fifth Edition (March 2012) © Copyright Lenovo 2012. 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. GS-35F-05925.

  • Page 3: Table Of Contents

    Checkout guide ....FRU ....65 System supporting the Lenovo ThinkVantage Before servicing ThinkPad T420 and T420i .
  • Page 4 1150 Speaker assembly ... Front view ....1160 LCD unit ....Rear view.

  • Page 5: About This Manual

    Before servicing a ThinkPad product, be sure to read all the information under Chapter 1 “Safety information” on page 1 and Chapter 2 “Important service information” on page 23. © Copyright Lenovo 2012...
  • Page 6 ThinkPad T420 and T420i Hardware Maintenance Manual...

  • 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 2012...

  • 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

    – 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.

  • Page 10: Grounding Requirements

    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. •...

  • Page 11: Safety Notices (Multilingual Translations)

    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 Before the computer is powered on after FRU replacement, make sure all screws, springs, and other small parts are in place and are not left loose inside the computer.
  • Page 12 DANGER If the LCD breaks and the fluid from inside the LCD gets into your eyes or on your hands, immediately wash the affected areas with water for at least 15 minutes. Seek medical care if any symptoms from the fluid are present after washing.
  • Page 13 PERIGO Chapter 1 Safety information...
  • Page 14 Antes de ligar o computador após a substituição da FRU, certifique-se de que todos os parafusos, molas e outras peças pequenas estejam no lugar e não estejam soltos dentro do computador. Verifique isso sacudindo o computador e procurando ouvir sons de peças soltas. Peças metálicas ou lascas de metal podem causar curto-circuito.
  • Page 15 Embora as principais baterias possuam baixa voltagem, uma bateria em curto-circuito ou aterrada pode produzir corrente o bastante para queimar materiais de pessoal ou inflamáveis. PERIGO A menos que uma hot swap seja permitida para a FRU que está sendo substituída, faça o seguinte antes de removê-la: desligue o computador, desconecte todos os cabos de energia das tomadas, remova o pacote de baterias e desconecte quaisquer cabos de interconexão.
  • Page 16 DANGER Si le panneau d'affichage à cristaux liquides se brise et que vous recevez dans les yeux ou sur les mains une partie du fluide, rincez-les abondamment pendant au moins quinze minutes. Consultez un médecin si des symptômes persistent après le lavage. DANGER Afin d'éviter tout risque de choc électrique, ne retirez pas le cache en plastique protégeant la partie inférieure de la carte d'alimentation.
  • Page 17 VORSICHT Akkus enthalten geringe Mengen von Nickel. Sie dürfen nicht zerlegt, wiederaufgeladen, kurzgeschlossen, oder Feuer oder Wasser ausgesetzt werden. Bei der Entsorgung die örtlichen Bestimmungen für Sondermüll beachten. Beim Ersetzen der Batterie nur Batterien des Typs verwenden, der in der Ersatzteilliste aufgeführt ist.
  • Page 18 Wenn ein Austausch der FRU bei laufendem Betrieb nicht erlaubt ist, gehen Sie beim Austausch der FRU wie folgt vor: Schalten Sie den Computer aus, ziehen Sie alle Netzkabel von den Netzsteckdosen ab, entfernen Sie den Akku und ziehen Sie alle miteinander verbundenen Kabel ab. ThinkPad T420 and T420i Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 ThinkPad T420 and T420i Hardware Maintenance Manual...
  • Page 21 Antes de encender el sistema despues de sustituir una FRU, compruebe que todos los tornillos, muelles y demás piezas pequeñas se encuentran en su sitio y no se encuentran sueltas dentro del sistema. Compruébelo agitando el sistema y escuchando los posibles ruidos que provocarían. Las piezas metálicas pueden causar cortocircuitos eléctricos.
  • Page 22 Para evitar descargas, no quite la cubierta de plástico que rodea la parte baja de la tarjeta invertida. Aunque las baterías principales tienen un voltaje bajo, una batería cortocircuitada o con contacto a tierra puede producir la corriente suficiente como para quemar material combustible o provocar quemaduras en el personal.

  • Page 23: 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 Chapter 1 Safety information...
  • Page 24 ThinkPad T420 and T420i Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 ThinkPad T420 and T420i Hardware Maintenance Manual...
  • Page 27 Chapter 1 Safety information...
  • Page 28 ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 29: Chapter 2. Important Service Information

    – “FRU identification for CTO, CMV, and GAV products” on page 25 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 forLenovo Support are available at http://www.lenovo.com/support.

  • Page 30: Important Notice For Replacing A System Board

    1, and assigned drive D:. The mSATA drive is installed in the wireless WAN card slot of the computer. The Lenovo preloaded software is installed on the mSATA drive. Always try to run a low-level format before replacing a hard disk drive. This will cause all customer data on the hard disk to be lost.

  • Page 31: Strategy For Replacing Frus For Cto, Cmv, And Gav

    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 32 • eSupport can be used to view the list of key commodities built in a particular machine serial (this is the same record found in PEW). • eSupport can be accessed at the following Web site: http://www.lenovo.com/support • To view the key commodities, do the following: 1. Click Products & Service Warranty.

  • Page 33: Chapter 3. General Checkout

    “What to do first” on page 28 • “Checkout guide” on page 29 – “System supporting the Lenovo ThinkVantage Toolbox program and the PC-Doctor for DOS diagnostics program” on page 29 – “System supporting the Lenovo diagnostics programs” on page 33 •...

  • Page 34: What To Do First

    What to do first When you do 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.

  • Page 35: 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 36 To run the test, do as follows: 1. Turn off the computer. 2. Make sure that the optical drive that is supported as a startup device is installed to the computer. 3. Turn on the computer. If the computer cannot be powered on, go to “Power system checkout” on page 37, and check the power sources.

  • Page 37: Lenovo Thinkvantage Toolbox

    Windows 7: 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. Chapter 3 General checkout...
  • Page 38 Windows XP: Click Start ➙ All Programs ➙ ThinkVantage ➙ Lenovo ThinkVantage Toolbox Follow the instructions on the screen. Lenovo ThinkVantageToolbox also has problem determination aids that determine software and usage problems. For additional information about this program, see the Help for the program.

  • Page 39: 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. Chapter 3...
  • Page 40 It also can be downloaded from http://www.lenovo.com/diags. To run the Lenovo Solution Center program, click Start ➙ Control Panel ➙ System and Security ➙ Lenovo - System Health and Diagnostics, and then follow the instructions on the screen.

  • Page 41: Bootable Diagnostic Programs

    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 42 5. Use the arrow keys to select ATAPI CDx (x: 0, 1, ...) and then press Enter. The diagnostic program will be launched automatically. 6. Follow the instructions on the screen to use the diagnostic program. ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 43: Power System Checkout

    Power system checkout To verify a symptom, do the following: 1. Turn off the computer. 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.

  • Page 44: Checking The Battery Pack

    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. Reinstall the battery pack. If the charge indicator or icon still does not turn on, replace the battery pack. If the charge indicator still does not turn on, replace the system board.
  • Page 45 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. • If the backup battery discharges quickly after replacement, replace the system board. Chapter 3 General checkout...
  • Page 46 ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 47: Chapter 4. Related Service Information

    Press and hold down the F1 key, and then turn on the computer. When the logo screen is displayed or if you hear repeating beeps, release the F1 key. The ThinkPad Setup program opens. b. Use the arrow keys to select Startup ➙ Boot. c. Select the CD/DVD drive as the 1st Boot Device. © Copyright Lenovo 2012...

  • Page 48: Passwords

    2. Insert the Operating System Recovery Disc into the DVD drive. 3. Press F10 to save the ThinkPad Setup program configuration changes. Follow the instructions on the screen to begin the recovery process. 4. Select your language and click Next. 5.

  • Page 49: Supervisor Password

    Attention: If the user HDP has been forgotten, check whether a master HDP has been set. If it has, it can be used for access to the hard disk drive. If no master HDP is available, neither Lenovo nor Lenovo authorized service technicians provide any services to reset either the user or the master HDP, or to recover data from the hard disk drive.
  • Page 50 2. When the ThinkPad logo comes up, immediately press F1 to enter the ThinkPad Setup program. When the POP icon is appearing on the screen, enter the POP. 3. Select Security, using the cursor directional keys to move the menu. 4.

  • Page 51: Power Management

    Power management To reduce power consumption, the computer has three power management modes: screen blank, sleep (standby in Windows XP), and hibernation. Screen blank mode If the time set on the “Turn off monitor” timer in the operating system expires, the LCD backlight turns off. To put the computer into screen blank mode, do as follows: 1.
  • Page 52 • The system is powered off. 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.

  • Page 53: Symptom-To-Fru Index

    Symptom-to-FRU index This section contains following information: • “Numeric error codes” on page 47 • “Error messages” on page 49 • “Beep symptoms” on page 50 • “No-beep symptoms” on page 50 • “LCD-related symptoms” on page 50 • “Intermittent problems” on page 52 •...

  • Page 54: Numeric Error Codes

    Table 2. Numeric error codes (continued) FRU or action, in sequence Symptom or error 0191 1. Run the ThinkPad Setup program, and then save System Security—Invalid Remote Change requested. current setting by pressing F10. 2. System board. 0199 1. Run the ThinkPad Setup program, and then save System Security—...

  • Page 55: Error Messages

    Thermal sensing error. System board. This system does not support batteries that are not Replace the battery. genuine Lenovo-made or authorized. This system will continue to boot, but may not charge unauthorized batteries. Attention: Lenovo has no responsibility for the...

  • Page 56: Beep Symptoms

    If the LCD you are servicing has two or less visible defective pixels, it should not be considered faulty. However, if the LCD has three or more visible defective pixels, it will be deemed as defective by Lenovo and it should be replaced.
  • Page 57 • Lenovo will not provide replacement if the LCD is within specification as we cannot guarantee that any replacement LCD will have zero pixel defects. • One pixel consists of R, G, B sub-pixels. Table 6. LCD-related symptoms Symptom or error...

  • Page 58: Intermittent Problems

    Intermittent problems Intermittent system hang problems can be due to a variety of causes that have nothing to do with a hardware defect, such as cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a problem recurs. When analyzing an intermittent problem, do the following: 1.

  • Page 59: Copyright Lenovo

    Chapter 5. Status indicators This chapter presents the system status indicators that show the status of the computer. © Copyright Lenovo 2012...
  • Page 60 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 61 Table 7. Status indicators (continued) Indicator Meaning Power on Green: The computer is on and ready to use. This indicator stays lit around the power-on button whenever the computer is on and is not in sleep (standby) mode. Note: This indicator blinks when the computer is in sleep mode. Numeric lock (On-screen By default, when the numeric lock is on, the numeric lock indicator is indicator)
  • Page 62 Table 7. Status indicators (continued) Indicator Meaning The ac power adapter is attached to the computer. The battery status indicator is off: The battery pack of the computer is fully charged or detached. Sleep (standby for Windows Green: XP) status The computer is in sleep (standby) mode.

  • Page 63: Chapter 6. Fn Key Combinations

    Switch between the computer display and an external monitor. Windows will show these display options: • Computer display only (LCD) • Computer display and external monitor (same image) • Computer display and external monitor (extended desktop function) • External monitor only © Copyright Lenovo 2012...
  • Page 64 Table 8. Fn key combinations (continued) Key combination Description 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 between the computer display and an external monitor. If an external monitor is attached, computer output is displayed in the following three patterns by turns: •...
  • Page 65 Table 8. Fn key combinations (continued) Key combination Description Fn+PrtSc Have the same function as the SysRq key. Fn+ScrLk Enable or disable the numeric keypad. The indicator of numeric lock will be displayed on the screen. Fn+Pause Have the same function as the Break key. Fn+cursor keys These key combinations work with Windows Media Player.
  • Page 66 ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 67: 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 68: 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 69: 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 70 ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 71: 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 72: Before Servicing Thinkpad T420 And T420I

    Before servicing ThinkPad T420 and T420i Some models of the ThinkPad T420 and T420i 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.

  • Page 73: 1010 Battery Pack

    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 74: 1020 Expresscard Blank Bezel

    1020 ExpressCard blank bezel Removal steps of ExpressCard blank bezel When you press the ExpressCard blank bezel , it pops out When installing: Make sure that the bezel is correctly oriented as shown in the following figure. ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 75: 1030 Serial Ultrabay Enhanced Device Or Travel Bezel

    1030 Serial Ultrabay Enhanced device or travel bezel For access, remove this FRU: • “1010 Battery pack” on page 67 Removal steps of Serial Ultrabay Enhanced 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 Enhanced device or the travel bezel in the direction shown by arrow...

  • Page 76: 1040 Hard Disk Drive (Hdd) And Solid State Drive (Ssd)

    1040 Hard disk drive (HDD) and solid state drive (SSD) For access, remove this FRU: • “1010 Battery pack” on page 67 Attention: • Do not drop the drive or apply any physical shock to it. The drive is sensitive to physical shock. Improper handling can cause damage and permanent loss of data.
  • Page 77 For HDD and HDD rubber rails (9.5 mm): For HDD and HDD rubber rails (7.0mm) : For SSD and spacers: Chapter 8 Removing and replacing a FRU...
  • Page 78 When installing: Make sure that SSD spacers or HDD rubber rails are attached firmly. ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 79: 1050 Dimm Slot Cover

    1050 DIMM slot cover For access, remove this FRU: • “1010 Battery pack” on page 67 Removal steps of DIMM slot cover Note: Loosen the screw , but do not remove it. Chapter 8 Removing and replacing a FRU...

  • Page 80: 1060 Dimm (In The Slot On The Underside Of The Computer)

    1060 DIMM (in the slot on the underside of the computer) For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1050 DIMM slot cover” on page 73 Note: Your computer has two DIMM slots: one under the keyboard and another on the underside of the computer.

  • Page 81: 1070 Pci Express Mini Card For Wireless Wan

    1070 PCI Express Mini Card for wireless WAN For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1050 DIMM slot cover” on page 73 Removal steps of PCI Express Mini Card for wireless WAN In step , unplug the jacks by using the removal tool antenna RF connector (P/N: 08K7159), or pick the connectors with your fingers and gently unplug them in the direction of the arrow.
  • Page 82 Note: Plug the yellow cable into the jack labeled MAIN, and the blue cable into the jack labeled AUX on the card. If the computer you are servicing is a wireless WAN-ready model and does not have a wireless WAN card, route the antenna cables and secure them with a tape as shown in the following figure.

  • Page 83: 1080 Keyboard

    1080 Keyboard For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1050 DIMM slot cover” on page 73 Removal steps of keyboard Step Screw (quantity) Color Torque M2 × 10 mm, wafer-head, nylon-coated (1) Silver 0.181 Nm (1.85 kgfcm)
  • Page 84 Lift the keyboard a little in the direction shown by arrow , and then detach the connector Installation steps of keyboard When installing the keyboard, do the following: 1. Attach the keyboard connector. ThinkPad T420 and T420i Hardware Maintenance Manual...
  • Page 85 2. Attach the keyboard so that the keyboard edges are under the frame. 3. To make sure that the front edge of the keyboard is housed firmly, gently press the keys with your palms and slightly slide the keyboard toward you until it snaps into position. Chapter 8 Removing and replacing a FRU...
  • Page 86 4. Make sure that the front edge of the keyboard is attached firmly. 5. Secure the keyboard by tightening the screws from the bottom side of the computer. ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 87: 1090 Dimm (In The Slot Under The Keyboard)

    1090 DIMM (in the slot under the keyboard) For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1050 DIMM slot cover” on page 73 • “1080 Keyboard” on page 77 Note: Your computer has two DIMM slots: one under the keyboard and another on the underside of the computer.
  • Page 88 When installing: Insert the notched end of the DIMM into the socket. Press the DIMM firmly, and pivot it until it snaps into place. Make sure that it is firmly fixed in the slot and does not move easily. ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 89: 1100 Backup Battery

    1100 Backup battery For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1050 DIMM slot cover” on page 73 • “1080 Keyboard” on page 77 Removal steps of backup battery DANGER Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode.
  • Page 90 ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 91: 1110 Pci Express Mini Card For Wireless Lan

    1110 PCI Express Mini Card for wireless LAN For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1050 DIMM slot cover” on page 73 • “1080 Keyboard” on page 77 Removal steps of PCI Express Mini Card for wireless LAN In step , unplug the jacks by using the removal tool antenna RF connector (P/N: 08K7159), or pick the connectors with your fingers and gently unplug them in the direction of the arrow.
  • Page 92 When installing: • In models with a wireless LAN card that has two antenna connectors, plug the gray cable into the jack marked MAIN or M, and the black cable into the jack marked AUX or A on the card. If the computer you are servicing has three cables, put the white cable in the cable protection tube and secure it with a tape as shown in this figure.

  • Page 93: 1120 Keyboard Bezel Assembly, Fpc Cable, And Bluethooth Daughter Card

    1120 Keyboard bezel assembly, FPC cable, and Bluethooth daughter card For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1020 ExpressCard blank bezel” on page 68 • “1050 DIMM slot cover” on page 73 •...
  • Page 94 Torque Step Screw (quantity) Color M2 × 3 mm, wafer-head, nylon-coated (1) Black 0.181 Nm (1.85 kgfcm) Shoulder screw (2) Silver 0.181 Nm (1.85 kgfcm) ThinkPad T420 and T420i Hardware Maintenance Manual...
  • Page 95 When installing: Make sure that the connector is attached firmly. Chapter 8 Removing and replacing a FRU...
  • Page 96 When installing: Make sure that the connectors are attached firmly. Step Screw (quantity) Color Torque M2 × 3 mm, wafer-head, nylon-coated (1) Black 0.181 Nm (1.85 kgfcm) ThinkPad T420 and T420i Hardware Maintenance Manual...
  • Page 97 When installing: Make sure that the connector is attached firmly. Chapter 8 Removing and replacing a FRU...

  • Page 98: 1130 Smartcard

    1130 SmartCard For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1050 DIMM slot cover” on page 73 • “1080 Keyboard” on page 77 • “1120 Keyboard bezel assembly, FPC cable, and Bluethooth daughter card” on page 87 Removal steps of SmartCard Step Screw (quantity)
  • Page 99 When installing: Make sure that the connector is attached firmly. Removal steps of SmartCard dummy spacer Some models have a SmartCard dummy spacer as a miscellaneous part. For those models, remove the spacer as shown: Step Screw (quantity) Color Torque M2 ×...

  • Page 100: 1140 Modem Daughter Card (Mdc)

    1140 Modem daughter card (MDC) For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1050 DIMM slot cover” on page 73 • “1080 Keyboard” on page 77 • “1120 Keyboard bezel assembly, FPC cable, and Bluethooth daughter card” on page 87 Removal steps of modem daughter card (MDC) Torque Step...

  • Page 101: 1150 Speaker Assembly

    1150 Speaker assembly For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1050 DIMM slot cover” on page 73 • “1080 Keyboard” on page 77 • “1120 Keyboard bezel assembly, FPC cable, and Bluethooth daughter card” on page 87 Removal steps of speaker assembly Torque Step...
  • Page 102 When installing: Attach the speaker assembly and route the cable as shown in the following figure, and make sure that the speaker connector is attached firmly. ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 103: 1160 Lcd Unit

    1160 LCD unit For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1020 ExpressCard blank bezel” on page 68 • “1050 DIMM slot cover” on page 73 • “1070 PCI Express Mini Card for wireless WAN” on page 75 •...
  • Page 104 Torque Step Screw (quantity) Color M2 × 3 mm, wafer-head, nylon-coated (1) Black 0.181 Nm (1.85 kgfcm) ThinkPad T420 and T420i Hardware Maintenance Manual...
  • Page 105 Step Screw (quantity) Color Torque Black 0.392 Nm M2.5 × 6 mm, wafer-head, nylon-coated (2) (4.0 kgfcm) When installing: • Make sure that you attach the connectors firmly. • Make sure that you route the cables correctly and you tape up in the proper positions as shown in the above figure.
  • Page 106 ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 107: 1170 Fan Assembly

    1170 Fan assembly For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1020 ExpressCard blank bezel” on page 68 • “1050 DIMM slot cover” on page 73 • “1070 PCI Express Mini Card for wireless WAN” on page 75 •...
  • Page 108 Torque Step Screw (quantity) Color Capture shoulder screw (4) Silver 0.181 Nm (1.85 kgfcm) M2 × 3 mm, wafer-head, nylon-coated (1) black 0.181 Nm (1.85 kgfcm) For Discrete Graphics models: ThinkPad T420 and T420i Hardware Maintenance Manual...
  • Page 109 For Integreted Graphics models: When installing: • Before you attach the fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams, on the parts marked as in the following figures. Either too much or too less application of grease can cause a thermal problem due to imperfect contact with a component.
  • Page 110 • When attaching the fan assembly to the frame, take care not to damage the heat sink of the fan assembly. • Make sure that the fan connector is attached firmly. ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 111: 1180 Cpu

    1180 CPU For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1020 ExpressCard blank bezel” on page 68 • “1050 DIMM slot cover” on page 73 • “1070 PCI Express Mini Card for wireless WAN” on page 75 •...

  • Page 112: 1190 Base Cover Assembly And Dc-In Connector Cable

    1190 Base cover assembly and DC-in connector cable For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1020 ExpressCard blank bezel” on page 68 • “1030 Serial Ultrabay Enhanced device or travel bezel” on page 69 •...
  • Page 113 Torque Step Screw (quantity) Color M2 × 5 mm, wafer-head, nylon-coated (8) Black 0.181 Nm (1.85 kgfcm) When installing: Make sure that the connector is attached firmly. When installing: Make sure that the wireless switch is adjusted as shown in callout Chapter 8 Removing and replacing a FRU...
  • Page 114 Step Screw (quantity) Color Torque Black 0.181 Nm M2 × 3 mm, wafer-head, nylon-coated (1) (1.85 kgfcm) Note: Applying labels to the base cover The new base cover FRU is shipped with a kit containing labels of several kinds. When you replace the base cover, you need to apply the following label: Homologation label The following labels need to be peeled off from the old base cover, and need to be put on the new base cover.
  • Page 115 Wireless WAN MAC address label China mobile IMEI label China telecom IMEI label SIRM labels (only for Malaysia) Wireless card label (only for Brazil) Anatel label (only for Brazil) Modem AMOM label (only for Brazil) Bluetooth label (only for Brazil) Israel label (50 mm x 19 mm) No MIC label (only for TAA module assembled in Mexico) Vodafone label...

  • Page 116: 1200 Magnesium Structure Frame

    1200 Magnesium structure frame For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1020 ExpressCard blank bezel” on page 68 • “1030 Serial Ultrabay Enhanced device or travel bezel” on page 69 • “1040 Hard disk drive (HDD) and solid state drive (SSD)” on page 70 •...
  • Page 117 M2 × 8 mm, wafer-head, nylon-coated (2) Black 0.181 Nm (1.85 kgfcm) Hex stud, nylon-coated (2) Silver 0.392 Nm (4.0 kgfcm) Chapter 8 Removing and replacing a FRU...

  • Page 118: 1210 System Board And Expresscard Slot Assembly

    1210 System board and ExpressCard slot assembly For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1020 ExpressCard blank bezel” on page 68 • “1030 Serial Ultrabay Enhanced device or travel bezel” on page 69 •...
  • Page 119 Platform Controller Hub (PCH) Graphic Processing Unit (GPU) (Discrete graphics chip) Note: The GPU is only for models with switchable graphics. Models with integrated graphics do not have a GPU on the system board. For Switchable Graphics models: For Integrated Graphics models: Chapter 8 Removing and replacing a FRU...

  • Page 120: 1220 Msata Solid State Drive

    Step Screw (quantity) Color Torque Black 0.181 Nm M2 × 3 mm, wafer-head, nylon-coated (1) (1.85 kgfcm) When installing: Make sure that the connector is attached firmly. 1220 mSATA solid state drive For access, remove these FRUs in order: • “1010 Battery pack”...
  • Page 121 Removal steps of mSATA solid state drive Torque Step Screw (quantity) Color M2 × 3 mm, wafer-head, nylon-coated (1) Black 0.181 Nm (1.85 kgfcm) Chapter 8 Removing and replacing a FRU...

  • Page 122: 2010 Lcd Bezel Assembly

    2010 LCD bezel assembly For access, remove the following FRU: • “1010 Battery pack” on page 67 Removal steps of LCD bezel assembly ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 123: 2020 Led Board

    2020 LED board For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “2010 LCD bezel assembly” on page 116 Removal steps of LED board Torque Step Screw (quantity) Color M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgfcm)
  • Page 124 When installing: Make sure that the connector is attached firmly. ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 125: 2030 Integrated Camera

    2030 Integrated camera For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “2010 LCD bezel assembly” on page 116 Removal steps of integrated camera Step Screw (quantity) Color Torque M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgfcm)
  • Page 126 ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 127: 2040 Lcd Panel And Lcd Cable

    2040 LCD panel and LCD cable For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1020 ExpressCard blank bezel” on page 68 • “1050 DIMM slot cover” on page 73 • “1070 PCI Express Mini Card for wireless WAN” on page 75 •...
  • Page 128 When installing: Make sure that the connector is attached firmly. ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 129: 2050 Camera Cable

    2050 Camera cable For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1020 ExpressCard blank bezel” on page 68 • “1050 DIMM slot cover” on page 73 • “1070 PCI Express Mini Card for wireless WAN” on page 75 •...

  • Page 130: 2060 Wireless Lan Antenna Assembly Or Wireless Lan/Wan Antenna Assembly

    2060 Wireless LAN antenna assembly or wireless LAN/WAN antenna assembly For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1020 ExpressCard blank bezel” on page 68 • “1050 DIMM slot cover” on page 73 •...
  • Page 131 Step Screw (quantity) Color Torque M2 × 3 mm, flat-head, nylon-coated (2) Black 0.181 Nm (1.85 kgfcm) Chapter 8 Removing and replacing a FRU...

  • Page 132: 2070 Hinges And Lcd Rear Cover Assembly

    2070 Hinges and LCD rear cover assembly For access, remove these FRUs in order: • “1010 Battery pack” on page 67 • “1020 ExpressCard blank bezel” on page 68 • “1050 DIMM slot cover” on page 73 • “1070 PCI Express Mini Card for wireless WAN” on page 75 •...
  • Page 133 Chapter 8 Removing and replacing a FRU...
  • Page 134 ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 135: Chapter 9. Locations

    Fingerprint reader Touch pad buttons Touch pad TrackPoint buttons TrackPoint pointing stick UltraNav Volume control buttons ThinkVantage button Power switch Status indicators Note: For the description of each indicator, see Chapter 5 “Status indicators” on page 53. © Copyright Lenovo 2012...
  • Page 136 ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 137: Rear View

    Rear view Status indicators Note: For the description of each indicator, see Chapter 5 “Status indicators” on page 53. SmartCard slot DisplayPort connector USB connector RJ-45 (Ethernet) connector External monitor connector Power jack USB connector Modem connector or IEEE 1394 Chapter 9 Locations...

  • Page 138: Bottom View

    Bottom view Battery pack Battery pack latch DIMM slot Docking connector LCD cover latch Serial Ultrabay Enhanced lock latch Serial Ultrabay Enhanced eject latch ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 139: 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 140: Overall

    Overall ThinkPad T420 and T420i Hardware Maintenance Manual...
  • Page 141 Table 9. Parts list—Overall FRU no. FRU (Overall) CRU ID a - c See “Miscellaneous parts” on page 162. LCD unit (see “LCD FRUs” on page 155.) ThinkPad b/g/n Wireless (1x1 BGN) 60Y3247 60Y3249 • 4177-CTO, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Dx, 2Ex, 2Fx, 2Gx, 2Kx, 2Lx, 2Mx, 2Xx, 2Yx, 36x, GFx, GKx, GLx, GMx, QQx, QRx, QSx, R4x, RDx, RFx, RNx, RPx •...
  • Page 142 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID • 4237-CTO • 4238-CTO 60Y3233 Intel Centrino Ultimate-N 6300 • 4177-CTO, 2Hx, 2Jx, 38x, Q8x • 4178-CTO, 67x, 99x, 9Ax, 9Bx, 9Cx, ASx, CBx, DLx, DMx, DNx • 4179-CTO •...
  • Page 143 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID 4-GB DDR3-1333 SDRAM SO-DIMM (PC3-10600) card 55Y3717 • 4177-CTO, 27x, 29x, 2Ax, 2Bx, 2Cx, 2Hx, 2Jx, 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 2Yx, 32x, 33x, 34x, 35x, Q3x, Q5x, Q8x, QBx, QDx, QFx, QGx, QHx, QJx, QKx, QLx, QMx, QNx, QPx, QUx, QVx, QWx, QXx, QYx, QZx, R2x, R3x, R4x, R7x, R8x, RAx, RBx, RCx, RDx, RFx, RGx, RHx, RJx, RKx, RLx, RMx, RPx, RQx, RRx, RSx, RTx, RVx, RWx, RXx, RYx, RZx...
  • Page 144 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID PVx, PWx, PXx, PYx, PZx, Q2x, Q3x, Q4x, Q6x, Q7x, Q8x, Q9x, QAx, QBx, QCx, QDx, QEx, QFx, QGx, QHx, QJx, QKx, QLx • 4237-CTO • 4238-CTO 04W1372 Keyboard bezel assembly without fingerprint reader •...
  • Page 145 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID DVD-RAM/RW drive 75Y5115 75Y5113 • 4177-CTO, 22x, 23x, 24x, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Dx, 2Ex, 2Fx, 2Gx, 2Hx, 2Jx, 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Qx, 2Rx, 2Sx, 2Tx, 2Ux, 2Vx, 75Y5111 2Wx, 2Xx, 2Yx, 32x, 33x, 34x, 35x, 36x, 37x, 38x, GFx, GKx, GLx, GMx, Q2x, Q4x, Q5x, Q8x, QBx, QGx, QHx, QJx, QKx, QLx, QMx, QNx, QPx, QQx, QRx,...
  • Page 146 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID Travel Bezel 60Y5512 • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO, LPx, LQx • 4236-CTO, NEx, NDx • 4237-CTO • 4238-CTO Audio sub card 04W1623 • 4177-CTO • 4178-CTO •...
  • Page 147 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID NWx, NXx, NYx, P2x, P3x, P4x, P5x, P6x, P8x, P9x, PAx, PBx, PCx, PDx, PEx, PFx, PGx, PHx, PJx, PLx, PPx, PQx, QFx • 4237-CTO • 4238-CTO 04W1631 I/O sub card (1394 and USB) •...
  • Page 148 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID CJx, CRx, CSx, CUx, CVx, CWx, CXx, CYx, CZx, D2x, D3x, D4x, D5x, D6x, D7x, D8x, D9x, DAx, DBx, DCx, DDx, DEx, DFx, DGx, DHx, DJx, DKx, DLx, DMx, DNx, DRx, DSx, DTx, DUx, DVx, DWx, DXx, DYx, DZx, E2x •...
  • Page 149 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID Base cover assembly (Taiwan 65 W) 04W1628 • 4177-CTO, QMx • 4178-CTO, 5Bx, 5Dx, 5Kx, 66x, 67x, 68x, 9Fx, 9Gx, BWx • 4179-CTO • 4180-CTO, 62x, 63x, MBx, MNx, PAx, QFx •...
  • Page 150 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID Integrated China Telecom Mobile Broadband TD-SCDMA (Leadcore LC5740) 60Y3261 • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 60Y3239 Integrated China Telecom Mobile Broadband (Huawei EM660) •...
  • Page 151 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID SATA hard disk drive, 320 GB, 5,400 rpm 45N7219 45N7297 • 4177-CTO, 22x, 2Lx, 2Rx, 2Dx, Q2x, QZx, R8x, RAx, RCx, RDx, RLx, RMx, RVx, RZx 45N7315 • 4178-CTO, 5Kx, AGx, 6Sx, 6Tx, 6Ux, 6Xx, 93x, AFx, AMx, ANx, CFx, CJx, CWx, 45N7307 CXx, D6x, D8x, DCx, AAx, DZx, E2x 45N7287...
  • Page 152 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID SATA hard disk drive, 500 GB, 7200 rpm 45N7257 45N7277 • 4177-CTO, 23x, 24x, 25x, 26x, 27x, 29x, 2Bx, 2Ex, 2Fx, 2Gx, 2Hx, 2Jx, 2Kx, 2Nx, 2Px, 2Qx, 2Vx, 2Wx, 2Xx, 2Yx, 32x, 35x, 36x, 37x, 38x, Q4x, QGx, QHx, 45N7321 QJx, QKx, QLx, QMx, QNx, QPx, QQx, QRx, QSx, QTx, QUx, QWx, QXx, QYx, R5x, R6x, R7x, RFx, RGx, RHx, RJx, RKx, RNx, RPx, RQx, RRx, RSx, RTx,...
  • Page 153 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID HDD cover 04W1637 System board assembly, integrated graphics, AMT, TPM 04W2045 • 4177-CTO, 2Ex, 2Rx, GLx, GMx, Q8x • 4178-CTO, 55x, 56x, 58x, 5Yx, 66x, 5Rx, 5Sx, 67x, 68x, 69x, 6Cx, 5Zx, 6Jx, 6Vx, 6Wx, 84x, 6Yx, 95x, 9Bx, 94x, 9Gx, 97x, 9Dx, 9Rx, 9Px, 9Qx, 9Mx, 9Tx, 9Ux, ACx, AEx, AFx, APx, AYx, BFx, BTx, CCx, D2x, D3x, D4x, DKx, CEx, DCx, CYx, DDx, DGx, DMx, DQx, DRx...
  • Page 154 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID System board assembly, discrete graphics, AMT, TPM 04W2049 • 4177-CTO, 2Jx, 2Nx, 2Px, Q4x, QBx, RKx, RLx • 4178-CTO, 54x, 55x, 58x, 5Ex, 5Fx, 5Yx, 5Zx, 6Ax, 6Px, 6Rx, 6Vx, 6Wx, 6Xx, 6Yx, 99x, 9Ax, A3x, A4x, A9x, C5x, C6x, C7x, CAx, DJx •...
  • Page 155 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID CPU assembly, i5-2520M (2.50 GHz) 04W0492 • 4177-CTO, 2Fx, 2Nx, Q5x, Q8x, QNx • 4178-CTO, 52x, 56x, 58x, 5Ax, 5Bx, 5Ex, 5Fx, 5Vx, 5Zx, 68x, 6Fx, 6Qx, 6Ux, 6Vx, 6Xx, 6Yx, 6Zx, 9Ax, 9Bx, 9Cx, 9Kx, 9Px, 9Qx, 9Tx, 9Wx, A3x, A9x, AAx, ABx, ACx, ALx, ANx, APx, ASx, C6x, CZx, DMx •...
  • Page 156 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID CPU assembly, i3-2310M (2.10 GHz) 04W0495 • 4177-CTO, 22x, 23x, 24x, 26x, 28x, 29x, 2Ax, 2Bx, 2Dx, 2Ex, 2Qx, 2Rx, 2Sx, 2Tx, 2Ux, 2Xx, 2Yx, QGx, QMx, QTx, QUx •...
  • Page 157 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID CPU assembly, Intel Dual Core i5-2450M (2.50 GHz) 04W4095 • 4177-CTO, 33x, 34x, 35x, 37x, 38x, RQx, RVx, RWx • 4178-CTO, CHx, CJx, CQx, CRx, CSx, CUx, CVx, CWx, CXx, CYx, D2x, D3x, D4x, D7x, D8x, D9x, DAx, DBx, DCx, DDx, DEx, DFx, DGx, DLx, DNx, DWx, DXx, DYx, DZx, E2x •...
  • Page 158 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID SmartCard Reader 04W1638 04W2084 • 4177-CTO, 2Fx, 2Gx, 2Hx, 37x, 38x, Q8x, QBx, QPx, R9x, RBx, RCx, RLx, RMx, RRx, RSx, RTx, RUx • 4178-CTO, 5Lx, 5Mx, 5Nx, 5Px, 5Qx, 5Rx, 5Sx, 5Tx, 5Ux, 5Vx, 5Wx, 5Xx, 5Yx, 5Zx, 66x, 67x, 68x, 6Ax, 6Bx, 6Cx, 6Dx, 6Ex, 6Fx, 6Gx, 6Qx, 6Rx, 6Xx, 6Yx, 6Zx, 92x, 93x, 94x, 95x, 96x, 97x, 98x, 99x, 9Ax, 9Bx, 9Cx, A5x, A6x, A7x, AEx, AXx, AYx, AZx, B2x, B3x, B4x, BDx, BEx, BFx, BHx, BJx, BMx, BNx, BPx, BQx,...
  • Page 159 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID Fan assembly, discrete 04W0408 • 4177-CTO, 24x, 25x, 26x, 2Cx, 2Dx, 2Ex, 2Hx, 2Kx, 2Lx, 2Nx, 2Px, 2Qx, 2Tx, 04W0410 2Ux, 2Vx, 2Wx, 2Yx, 34x, 36x, 37x, 38x, GFx, Q2x, Q5x, QGx, QKx, QLx, QMx, QNx, QQx, QSx, QZx, R2x, R7x, RAx, RBx, RDx, RHx, RKx, RLx, RQx, RRx, RWx, RXx, RYx, RZx •...
  • Page 160 Table 9. Parts list—Overall (continued) FRU no. FRU (Overall) CRU ID PBx, PCx, PDx, PEx, PFx, PGx, PHx, PJx, PKx, PLx, PMx, PNx, PPx, PQx, PRx, PSx, PTx, PUx, PVx, PWx, PXx, PYx, PZx, Q2x, Q3x, Q7x, Q8x, Q9x, QAx, QBx, QCx, QDx, QEx, QFx, QHx, QKx, QLx •...

  • Page 161: Lcd Frus

    LCD FRUs Table 10. Parts list—LCD FRUs No. FRU FRU no. See “Miscellaneous parts” on page 162. LCD bezel assembly 04W1609 Chapter 10 Parts list...
  • Page 162 Table 10. Parts list—LCD FRUs (continued) No. FRU FRU no. 60Y9994 Camera module • 4177-CTO, 22x, 23x, 24x, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Dx, 2Ex, 2Fx, 2Gx, 2Hx, 2Jx, 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Qx, 2Rx, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 2Xx, 2Yx, 32x, 33x, 34x, 35x, 36x, 37x, 38x, GFx, GKx, GLx, GMx, Q2x, Q4x, Q5x, Q8x, QBx, QGx, QHx, QJx, QKx, QLx, QMx, QNx, QPx, QQx, QRx, QSx, QUx, QVx, QWx, QXx, QYx, QZx, R2x, R3x, R4x, R7x, R8x, R9x, RAx, RBx, RCx, RDx, RFx, RGx, RHx, RJx,...
  • Page 163 Table 10. Parts list—LCD FRUs (continued) No. FRU FRU no. 04W1614 Camera module (No camera and no integrated microphone) • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO LCD module, 14.0-inch HD (1366 x 768) LED backlight Anti-Glare Display 93P5691 93P5687 •...
  • Page 164 Table 10. Parts list—LCD FRUs (continued) No. FRU FRU no. • 4237-CTO • 4238-CTO Hinges 04W1610 04W1612 04W1611 Wireless antenna set 04W1615 04W1616 LCD rear cover assembly 04W1608 LED cable with camera bracket 04W1619 04W1617 LCD cable (for 14.0-inch HD LCD module) •...
  • Page 165 Table 10. Parts list—LCD FRUs (continued) No. FRU FRU no. N9x, NAx, NBx, NEx, NFx, PGx, PNx, PRx, PSx, PUx, PVx, PWx, PYx, PZx, Q3x, Q4x, Q5x, QDx • 4236-CTO, 63x, 65x, MBx, N4x, N6x, N7x, N8x, N9x, NAx, NBx, NEx, NFx, NGx, NHx, NNx, NSx, NTx, NVx, P2x, PFx, PGx, PKx, PMx, PNx, PRx •...

  • Page 166: Keyboard

    Keyboard Table 11. Parts list—Keyboard Language FRU no. Arabic 45N2076 45N2146 45N2216 Belgian 45N2077 45N2147 45N2217 Brazilian Portuguese 45N2075 45N2145 45N2215 Bulgarian 45N2078 45N2148 45N2218 Canadian French (058) 45N2073 45N2143 45N2213 Canadian French (Acnor) 45N2072 45N2142 45N2212 Czech 45N2079 45N2149 45N2219 Danish 45N2080...
  • Page 167 Table 11. Parts list—Keyboard (continued) Language FRU no. Netherlands 45N2090 45N2160 45N2230 Turkish (F Type) 60Y9552 60Y9554 60Y9550 Chapter 10 Parts list...

  • Page 168: Miscellaneous Parts

    Miscellaneous parts Table 12. Parts list—Miscellaneous parts FRU no. Screw and seal kit: 04W1605 • M2 × 3 mm, black (50) • M2 × 5 mm, black (20) • M2 × 8 mm, black (15) • M2 × 10 mm, Silver (4) •...
  • Page 169 • Shield - EMC • Clear plate - LCD rear cover • LED lens - LCD rear cover • ThinkPad logo • Lenovo logo • LCD latch - right • LCD latch - left • Sponge - center • Sponge - upper •...

  • Page 170: Information About Ac Power Adapters

    Information about ac power adapters Table 13. 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 2-pin (65 W, 20 V) adapter (models CTO, xxE, xxF, xxJ, xxL, xxP, xxS, xxU, xxY) 42T4423 42T4419 2-pin (65 W, 20 V) adapter (models CTO, xxE, xxF, xxJ, xxL, xxP, xxS, xxU, xxY)

  • Page 171: Power Cords

    Power cords A ThinkPad power cord for a specific country or region is usually available only in that country or region: Table 15. Parts list—2-pin power cords Country or region FRU no. Argentina 42T5020 42T5105 • models -CTO, xxY Brazil 42T5180 42T5183 •...

  • Page 172: Recovery Discs

    Recovery discs Windows XP Professional DVDs Note: The Windows XP Professional recovery DVDs are available only for models with a valid Microsoft Windows XP Professional certificate of authenticity (COA) affixed to the system. Due to a Microsoft licensing limitation, if a model came with Windows XP Professional preinstalled from the factory, but has either a Windows 7 or Windows Vista COA affixed to the system, that model is eligible only for recovery DVDs that match the operating system specified on the COA.
  • Page 173 Windows Vista Home Basic (32 bit) SP2 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. Due to a Microsoft licensing limitation, if a model came with Windows Vista Business or Windows Vista Ultimate preinstalled from the factory, but has a Windows 7 COA affixed to the system, that model is eligible only for recovery DVDs that match the operating system specified on the COA.
  • Page 174 QYx, R2x, R3x, R4x, R8x, R9x, RAx, RBx, RCx, RDx, RFx, RGx, RJx, RKx, RLx, RMx, RNx, RPx, RQx, RRx, RTx, RVx, RWx, RXx, RYx • 4178-CTO, 52x, 53x, 54x, 55x, 56x, 57x, 58x, 59x, 5Ax, 5Bx, 5Cx, 5Dx, 5Ex, 5Fx, 5Gx, 5Hx, 5Kx, 5Mx, 5Px, 5Qx, 5Rx, 5Sx, 5Tx, 5Ux, 5Vx, 5Wx, 5Xx, 5Yx, 5Zx, 66x, 67x, 68x, 6Ax, 6Cx, 6Ex, 6Fx, 6Gx, 6Hx, 6Kx, 6Mx, 6Nx, 6Px, 6Qx, 6Rx, 6Ux, 6Vx, 6Wx, 6Yx, 82x, 83x, 84x, 93x, 96x, 99x, 9Ax, 9Bx, 9Cx, 9Gx, 9Hx, 9Jx, 9Kx, 9Lx, 9Mx, 9Rx, 9Sx, 9Tx, 9Wx, 9Xx, 9Yx, 9Zx, A2x, A3x, A4x, A5x, A7x, A8x, A9x, AAx,...
  • Page 175 Table 21. Parts list—Windows 7 Professional (64 bit) recovery DVDs (continued) Language 04T1340 or Slovak with English 04T3768 Spanish 04T3761 Serbian-Latin with English 04T3762 Simplified Chinese 04T3744 Traditional Chinese with English (Hong Kong S.A.R.) 04T3752 Turkish with English 04T3763 04T3745 Traditional Chinese with English US English (Disabled) 04T3764...
  • Page 176 • 4236-CTO • 4237-CTO • 4238-CTO Table 23. Parts list—Windows 7 Home Basic (64 bit) recovery DVDs Language Simplified Chinese 04T3784 Windows 7 Home Premium (32 bit) DVDs Windows 7 Home Premium (32 bit) is preinstalled as the operating system in the following models: •...
  • Page 177 Table 25. Parts list—Windows 7 Home Premium (64 bit) recovery DVDs (continued) Language 04T3792 German Hebrew with English 04T3793 Hungarian with Engish 04T3795 Japanese 04T3796 Korea with English 04T3797 Polish 04T3798 Portuguese with English 04T3799 Romanian with English 04T3800 Russian 04T3801 04T1381 and Slovak with English...
  • Page 178 • 4238-CTO Table 27. Parts list—Windows 7 Ultimate (64 bit) recovery DVDs Language US English 04T3769 ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 179: Common Service Tools

    USB floppy diskette drive for maintenance diskette 05K9283 USB floppy diskette drive tool kit 27L3452 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 Chapter 10 Parts list...
  • Page 180 ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 181: 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 182: Electronic Emissions Notices

    Electronic emissions notices For electronic emission information on Class B digital devices, refer to the corresponding information in the User Guide. ThinkPad T420 and T420i Hardware Maintenance Manual...

  • Page 183: Trademarks

    Trademarks The following terms are trademarks of Lenovo in the United States, other countries or both: Active Protection System Lenovo ThinkLight ThinkPad ThinkVantage TrackPoint Ultrabay The following terms are trademarks of Microsoft group of companies: Windows Microsoft The following terms are trademarks of Intel Corporation or its subsidiaries in the United States, other...
  • Page 184 ThinkPad T420 and T420i Hardware Maintenance Manual...
  • Page 186 Part Number: 0A60007_04 Printed in China (1P) P/N: 0A60007_04 *0A60007_04*...

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