Lenovo K4450A Hardware Maintenance Manual
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Lenovo K4450A Hardware Maintenance Manual

Lenovo K4450A Hardware Maintenance Manual

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Hardware Maintenance Manual
Lenovo K4450 and K4450A

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  • Page 1 Hardware Maintenance Manual Lenovo K4450 and K4450A...
  • Page 2 Appendix A “Notices” on page 79. First Edition (May 2014) © Copyright Lenovo 2014. 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...

  • Page 3: Table Of Contents

    Bottom view ....Trademarks ....Locating FRUs and CRUs ..© Copyright Lenovo 2014...
  • Page 4 Hardware Maintenance Manual...

  • Page 5: About This Manual

    Important: • This manual is intended only for trained service technicians who are familiar with Lenovo products. Use this manual to troubleshoot problems effectively. • Before servicing a Lenovo product, ensure that you read all the information in Chapter 1 “Safety information”...
  • Page 6 Hardware Maintenance Manual...

  • Page 7: Chapter 1. Safety Information

    • Fan louvers on the machine help to prevent overheating of internal components. Do not obstruct fan louvers or cover them with labels or stickers. Electrical safety Observe the following rules when working on electrical equipment. © Copyright Lenovo 2014...
  • Page 8 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

    4. Check for cracked or bulging batteries. 5. Remove the cover. 6. Check for any obvious non-Lenovo alterations. Use good judgment as to the safety of any non-Lenovo alterations. 7. Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.

  • Page 10: Grounding Requirements

    • 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...
  • Page 12 DANGER Hardware Maintenance Manual...
  • Page 13 Chapter 1 Safety information...
  • Page 14 PERIGO PERIGO PERIGO PERIGO PERIGO Hardware Maintenance Manual...
  • Page 15 PERIGO PERIGO PERIGO DANGER DANGER DANGER Chapter 1 Safety information...
  • Page 16 DANGER DANGER DANGER DANGER DANGER VORSICHT Hardware Maintenance Manual...
  • Page 17 VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information...
  • Page 18 VORSICHT VORSICHT VORSICHT Hardware Maintenance Manual...
  • Page 19 Chapter 1 Safety information...
  • Page 20 Hardware Maintenance Manual...
  • Page 21 Chapter 1 Safety information...
  • Page 22 Hardware Maintenance Manual...
  • Page 23 Chapter 1 Safety information...
  • Page 24 Hardware Maintenance Manual...
  • Page 25 Chapter 1 Safety information...
  • Page 26 Hardware Maintenance Manual...

  • Page 27: Chapter 2. General Checkout

    • Plastic parts, latches, pins, or connectors that have been cracked or broken by excessive force • Damage caused by the liquid spilled into the computer • Damage caused by the improper insertion of a PC card or the installation of an incompatible card © Copyright Lenovo 2014...

  • Page 28: Power System Checkout

    • Improper disc insertion or use of an optical drive • Diskette drive damage caused by pressure on the diskette drive cover, foreign material in the drive, or the insertion of a diskette with multiple labels • Damaged or bent diskette eject button •...

  • Page 29: Checking Operational Charging

    • Windows 8.1: Do one of the following: – Click Start ➙ Lenovo Solution Center ➙ System ➙ Battery. – Launch the Lenovo Settings program from the Start screen, and then click Power. To check the battery pack, do the following: 1.
  • Page 30 • If the voltage is more than +12.0 V dc, discharge the battery pack until the voltage becomes less than +12.0 V dc and then recharge the battery pack. If the voltage still is less than +12.0 V dc after recharging, replace the battery pack.

  • Page 31: Chapter 3. Important Service Information

    – Starting up from an external device For more information about the recovery solutions, refer to the help information system of the programs. Using passwords You can set the following types of passwords to protect unauthorized access to your computer. © Copyright Lenovo 2014...

  • Page 32: Power Management

    Attention: If you forget the password, there is no service procedure to reset the password. The system board must be replaced for a scheduled fee. • Power-on password: A power-on password protects the computer from being turned on by an unauthorized person.

  • Page 33: Hibernation Mode

    Hibernation mode In hibernation mode, the following occurs: • The system status, RAM, VRAM, and setup data are stored on the hard disk drive. • The system is powered off. If you have defined one of the following actions as the event that causes the computer to enter hibernation mode, perform that action.
  • Page 34 Hardware Maintenance Manual...

  • Page 35: Chapter 4. Status Indicators

    • Solid orange: The battery discharge level is between 5% and 20%. • Fast-blinking orange: The battery charge or discharge level is 5% or less. • Off: The battery is detached or the computer is powered off. © Copyright Lenovo 2014...
  • Page 36 Hardware Maintenance Manual...

  • Page 37: Chapter 5. Fn Key Combinations

    Has the same function as the End key on a conventional keyboard. Fn+Insert Has the same function as the Numeric Lock key on a conventional keyboard. Increases or decreases the display brightness level. Fn + up/down arrow Fn + left/right arrow Decreases or increases the sound volume. © Copyright Lenovo 2014...
  • Page 38 Hardware Maintenance Manual...

  • Page 39: Chapter 6. Locations

    Touch pad buttons RJ45 Ethernet connector Media card reader slot USB 3.0 connectors Status indicators HDMI connector Note: For the description of each status indicator, see Chapter 4 “Status indicators” on page 29. © Copyright Lenovo 2014...

  • Page 40: Bottom View

    CRUs, you can either install the CRU yourself or you can request that a Service Provider install the CRU according to the warranty service for your product. If you intend on installing the 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.

  • Page 41: Major Frus And Crus

    This exploded illustration helps Lenovo service technicians identify FRUs or CRUs that they may need to replace when servicing a customer’s computer. Refer to “Part numbers for orderable FRUs and CRUs” on page 38 if you need to look up Lenovo part numbers for a particular FRU or CRU.
  • Page 42 Table 3. Major FRUs and CRUs FRU description CRU ID LCD unit Keyboard bezel with touch pad Fingerprint board cable Fingerprint board Fingerprint board bracket System board DC-in connector bracket DC-in connector Hardware Maintenance Manual...

  • Page 43: Lcd Frus And Crus

    ) is not a FRU or CRU. It contains FRUs as its components. Refer to “LCD FRUs and CRUs” on page 37 if you need to replace a component of the LCD module. LCD FRUs and CRUs Lenovo K4450 and K4450A use a 356-mm (14.0-inch), high-definition (HD), light-emitting diode (LED), liquid crystal display (LCD). Chapter 6...

  • Page 44: Part Numbers For Orderable Frus And Crus

    LCD cable LCD panel Part numbers for orderable FRUs and CRUs When servicing a customer’s computer, Lenovo service technicians may use part numbers listed in the following tables to order replacement parts through Lenovo CRM (customer relationship management) system. Hardware Maintenance Manual...
  • Page 45 LK491S MB W8S I3-4005U 2G 90005572 LK491S MB W8P I3-4005U 2G 90005573 LK491S MB W8S I3-4005U 2G 90005574 5B20F77557 W K4450A DIS 3558U 2G W K4450A W8P DIS 3558U 2G 5B20F77556 5B20F77558 W K4450A W8S DIS 3558U 2G DC-in connector bracket Chapter 6 Locations...
  • Page 46 Table 5. Part numbers for non-LCD module FRUs and CRUs (continued) LK490s DC-IN Bracket 90202491 DC-in connector LK491s DC-IN Cable 90203374 Hard disk drive (320 HTS545032A7E660 6G 7mm 5.4K 320G HDD 16200405 MQ01ABF032 7mm 5.4K rpm 320G HDD TPG 16200330 16200384 ST320LT012 6G 7mm 5.4K 320G HDD WD3200LPVX-08V0TT0 6G 7 5.4K 320G HDD LI...
  • Page 47 Table 5. Part numbers for non-LCD module FRUs and CRUs (continued) Intel 7260BN 2x2BN+BT PCIE HMC WLAN 20200412 Intel 7260 Wilkins Peak2 2x2 11ac + BT Combo (HMC) 20200388 Cbt RTL8723BE 1x1BGN+BT HMC WLAN 20200440 Ltn RTL8723BE 1x1BGN+BT HMC WLAN 20200439 Memory module (2 M471B5773DH0-YK0 (D/ 2Gb/35nm)
  • Page 48 Table 5. Part numbers for non-LCD module FRUs and CRUs (continued) Media card reader slot board LK491s IO Board 90003705 Thermal module assembly LK491s Thermal Module W/FAN 90203377 Power board with cable 90002496 LK490s Power Board W/Cable Keyboard JME YJ US 84 black frame KBD W8 25210678 JME YanJing Thailand 84 black frame KBD W8 5N20F65775...
  • Page 49 Table 6. Part numbers for LCD-module FRUs (continued) LK490s LCD Cable 90202490 LCD panel SEC LTN140AT28-401 HD AG F 18200791 LED1 NB LCD LGD LP140WH2-TLT1 HD AG F 18200792 LED1 NB LCD AUO B140XTN03.1 HD LED 1 AG 18200693 CMI N140BGE-L33 HD AG F LED1 18201034 NB LCD Note: Camera and microphone board (...
  • Page 50 Hardware Maintenance Manual...

  • Page 51: Chapter 7. Fru Replacement Notices

    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 can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic version of this manual can be found at http://www.lenovo.com/UserManuals.

  • Page 52: Screw Notices

    FRU that changed the symptoms. Screw notices The Lenovo notebook computer uses special nylon-coated screws that have the following characteristics: • They maintain tight connections. • They do not easily come loose, even with shock or vibration.

  • Page 53: Chapter 8. Removing Or Replacing A Fru

    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 can find a list of CRUs for your product in this Hardware Maintenance Manual. An electronic version of this manual can be found at http://www.lenovo.com/UserManuals.

  • Page 54: 1010 Battery Pack

    1010 Battery pack Removal steps of the battery pack DANGER Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode. Unlock the battery lock . Hold the battery latch in the unlocked position, and then remove the battery pack When installing: Install the battery pack in the slot.

  • Page 55: 1030 Memory Modules

    Removal steps of the bottom slot cover Remove the screw , and then remove the bottom slot cover Step Screw (quantity) Color Torque M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) 1030 Memory modules For access, remove these FRUs in order: •...
  • Page 56 Removal steps of the memory modules Release the two latches on both edges of the socket at the same time , and then carefully remove the memory module When installing: Insert the notched end of the memory module into the memory slot at an angle of about 20 degrees.

  • Page 57: 1040 Hard Disk Drive Assembly

    1040 Hard disk drive assembly For access, remove these FRUs in order: • “1010 Battery pack” on page 48 • “1020 Bottom slot cover” on page 48 Important notice for replacing a hard disk 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 drive to be lost.

  • Page 58: 1050 Pci Express Mini Card For Wireless Lan

    Remove the hard disk drive assembly. When installing: Ensure that the hard disk drive connector is attached firmly. Removal steps of the hard disk drive bracket Remove the screws Step Screw (quantity) Color Torque M3 × 2.8 mm, flat-head, nylon-coated (4) Black 0.392 Nm (4.0 kgf-cm)

  • Page 59: 1060 Msata Solid-State Drive

    Removal steps of the PCI Express Mini Card for wireless LAN In steps , unplug the connectors by using the removal tool for the antenna RF connector or pick up the connectors with your fingers and gently unplug them. Then remove the screw Step Screw (quantity) Color...

  • Page 60: 1070 Backup Battery

    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. • Before removing the drive, have the user make a backup copy of all the information on it if possible. •...

  • Page 61: 1080 Keyboard

    Removal steps of the backup battery DANGER Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode. Carefully pry the backup battery out using a screwdriver. 1080 Keyboard For access, remove these FRUs in order: •...
  • Page 62 Push hard to unlatch the keyboard. Carefully detach the keyboard and then lift it up until you can see how it is connected. Hardware Maintenance Manual...

  • Page 63: 1090 Keyboard Bezel

    Detach the keyboard connector, and then remove the keyboard. When installing: Ensure that the keyboard connector is attached firmly. 1090 Keyboard bezel For access, remove these FRUs in order: • “1010 Battery pack” on page 48 • “1020 Bottom slot cover” on page 48 •...
  • Page 64 Removal steps of the keyboard bezel Remove the screws Step Screw (quantity) Color Torque Black 0.181 Nm M2 × 6 mm, flat-head, nylon-coated (10) (1.85 kgf-cm) M2 × 2.5 mm, flat-head, nylon-coated (3) Black 0.181 Nm (1.85 kgf-cm) Hardware Maintenance Manual...
  • Page 65 Remove the screws , and then detach the connectors. Torque Step Screw (quantity) Color M2 × 6 mm, flat-head, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm) When installing: Ensure that all the connectors are attached firmly. Chapter 8 Removing or replacing a FRU...

  • Page 66: 1110 Fingerprint Board Bracket And Fingerprint Board With Cable

    Detach the keyboard bezel from the frame, and then remove the keyboard bezel. 1110 Fingerprint board bracket and fingerprint board with cable For access, remove these FRUs in order: • “1010 Battery pack” on page 48 • “1020 Bottom slot cover” on page 48 •...

  • Page 67: 1120 Power Board

    Remove the fingerprint board with the fingerprint board cable. 1120 Power board For access, remove these FRUs in order: • “1010 Battery pack” on page 48 • “1020 Bottom slot cover” on page 48 • “1040 Hard disk drive assembly” on page 51 •...
  • Page 68 Removal steps of the media card reader slot board Detach the cables. When installing: Ensure that the cables are attached firmly. Hardware Maintenance Manual...

  • Page 69: 1140 System Board Assembly

    Remove the screws , and then remove the media card reader slot board. Torque Step Screw (quantity) Color M2 × 3 mm, flat-head, nylon-coated (3) Black 0.181 Nm (1.85 kgf-cm) 1140 System board assembly For access, remove these FRUs in order: •...
  • Page 70 Locating major sensitive components on the system board Attention: The following components mounted on a system board are extremely sensitive. Improper handling of a system board can cause damage to the following components, and might cause a system malfunction. When you service the system board, avoid any kind of rough handling. Graphics chip (for discrete graphics models) Microprocessor Platform Controller Hub (PCH)
  • Page 71 Removal steps of the system board assembly Detach the connectors. When installing: Ensure that all the connectors are attached firmly. Remove the screws Torque Step Screw (quantity) Color M2 × 3 mm, flat-head, nylon-coated (3) Black 0.181 Nm (1.85 kgf-cm) Chapter 8 Removing or replacing a FRU...

  • Page 72: 1150 Thermal Module Assembly

    Lift the system board assembly carefully, and then detach the connector When installing: Ensure that the connector is attached firmly to the system board. 1150 Thermal module assembly For access, remove these FRUs in order: • “1010 Battery pack” on page 48 •...
  • Page 73 Removal steps of the thermal module assembly Detach the connector . Loosen the screws When installing: Ensure that the connector is attached firmly to the system board. Carefully remove the thermal module assembly. Note: Be careful not to damage the connector. When installing: Before you attach the thermal module assembly to the system board, apply thermal grease, at an amount of 0.2 grams, on the part marked as shown in the following illustrations.

  • Page 74: 1160 Speakers, Lcd Unit And Base Cover

    For models with an integrated thermal module assembly For models with a discrete thermal module assembly 1160 Speakers, LCD unit and base cover For access, remove these FRUs in order: • “1010 Battery pack” on page 48 • “1020 Bottom slot cover” on page 48 •...
  • Page 75 Removal steps of the speakers Remove the screws , and then remove the speakers. Torque Step Screw (quantity) Color M2 × 3.1 mm, flat-head, nylon-coated (5) Black 0.181 Nm (1.85 kgf-cm) Chapter 8 Removing or replacing a FRU...
  • Page 76 Removal steps of the LCD unit and the base cover Release the antenna cables from the cable guides. Remove the screws Step Screw (quantity) Color Torque M2.5 × 5 mm, flat-head, nylon-coated (6) Black 0.392 Nm (4.0 kgf-cm) Cable routing: Route the antenna cables along the cable guides and secure the antenna boards with tapes. Attention: When you route the cables, ensure that they are not subject to any tension.
  • Page 77 Remove the LCD unit from the base cover. Applying labels to the base cover The new base cover is shipped with a kit containing labels of several kinds. Apply the labels as shown in the following illustration when you replace the base cover. For the labels not shipped with the new base cover, peel them off from the old base cover, and adhere them to the new one.

  • Page 78: 1170 Dc-In Connector

    Barcode label COA label Rating label Genuine Microsoft label System barcode label 1170 DC-in connector For access, remove these FRUs in order: • “1010 Battery pack” on page 48 • “1020 Bottom slot cover” on page 48 • “1040 Hard disk drive assembly” on page 51 •...

  • Page 79: 2010 Lcd Front Bezel

    2010 LCD front bezel For access, remove these FRUs in order: • “1010 Battery pack” on page 48 • “1160 Speakers, LCD unit and base cover” on page 68 Removal steps of the LCD front bezel Remove the screws Step Screw (quantity) Color Torque...

  • Page 80: 2030 Lcd Panel, Lcd Cable, And Hinges

    • “1010 Battery pack” on page 48 • “1160 Speakers, LCD unit and base cover” on page 68 • “2010 LCD front bezel” on page 73 Removal steps of the camera and microphone board Detach the connector and then peel off the camera and microphone board Note: The camera and microphone board is adhered to the top center of the LCD cover.
  • Page 81 Removal steps of the LCD panel and the LCD cable Remove the screws , and then remove the LCD panel Torque Step Screw (quantity) Color M2 × 2.5 mm, flat-head, nylon-coated (4) Black 0.181 Nm (1.85 kgf-cm) Turn over the LCD panel. Then detach the LCD cable. When installing: Ensure that the cable is attached firmly.

  • Page 82: 2040 Antenna Assembly And Lcd Rear Cover

    Removal steps of the hinges Remove the screws Torque Step Screw (quantity) Color M2 × 3 mm, flat-head, nylon-coated (6) Black 0.181 Nm (1.85 kgf-cm) Remove the hinges. 2040 Antenna assembly and LCD rear cover For access, remove these FRUs in order: •...
  • Page 83 Removal steps of the antenna assembly and the LCD rear cover Release the antenna cables from the cable guides of the LCD rear cover assembly and from the hinges. Cable routing: Route the antenna cables along the cable guides and secure the antenna boards with tapes. Attention: When you route the cables, ensure that they are not subject to any tension.
  • Page 84 Hardware Maintenance Manual...

  • Page 85: 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 86: Trademarks

    Trademarks The following terms are trademarks of Lenovo in the United States, other countries or both: Active Protection System Lenovo Lenovo logo OneKey Microsoft and Windows are trademarks of the Microsoft group of companies. Other company, product, or service names may be trademarks or service marks of others.

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