Hardware Maintenance Manual Lenovo K4450 and K4450A
Note: Before using this information and the product it supports, be sure to read the general information under 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 No. GS-35F-05925.
Contents About this manual. . . . . . . . . . . iii Chapter 1. Safety information . . . . . General safety . . . . . . . . . . . . . . . Electrical safety . . . . . . . . . . . . . . Safety inspection guide . . . . . . . . . . . Handling devices that are sensitive to electrostatic discharge. . . . . . . . . . . . . . . . . Grounding requirements . . . . . . . . . . . Safety notices (multilingual translations) . . . . . 3 4 4 Chapter 2. General checkout . . . . . 21 What to do first . . . . . . . .
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About this manual This manual provides service and reference information for the following Lenovo® products. Machine Machine Type (MT) Lenovo K4450 and K4450A 80H0, 20438 This manual provides information about the computer features, specifications, component locations, hardware replacement procedures, and parts listing. This manual also includes safety guidelines and important notices for servicing the computer.
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Chapter 1. Safety information This chapter presents the following safety information that you need to be familiar with before you service a Lenovo notebook computer.
Important: Use only approved tools and test equipment. Some hand tools have handles covered with a soft material that does not insulate you when working with live electrical currents. Many customers have, near their equipment, rubber floor mats that contain small conductive fibers to decrease electrostatic discharges. Do not use this type of mat to protect yourself from electrical shock. • Find the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet.
Safety inspection guide The purpose of this inspection guide is to assist you in identifying potentially unsafe conditions. As each machine was designed and built, required safety items were installed to protect users and service technicians from injury. This guide addresses only those items. You should use good judgment to identify potential safety hazards due to attachment of non-Lenovo features or options not covered by this inspection guide.
• Keep the parts in protective packages until they are inserted into the product. • Avoid contact with other people. • Wear a grounded wrist strap against your skin to eliminate static on your body. • Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap. • Use a grounded work mat to provide a static-free work surface. The mat is especially useful when handling ESD-sensitive devices.
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Chapter 2. General checkout This chapter contains the following topics: • “What to do first” on page 21 • “Power system checkout” on page 22 Before you go to the checkout instructions, ensure that you read the following important notes. Important notes: • Only certified trained personnel should service the computer. • Before replacing any FRU, read the entire page on removing and replacing FRUs. • When you replace FRUs, it is recommended to use new nylon-coated screws.
• 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 • Fuses blown by attachment of an unsupported device • Forgotten computer password (making the computer unusable) • Sticky keys caused by spilling liquid onto the keyboard • Use of an incorrect ac power adapter on notebook computers The following symptoms might in
• If the voltage is acceptable, do the following: a. Replace the system board. b. If the problem persists, call the Customer Support Center. Note: Noise from the ac power adapter does not always indicate a defect. Checking operational charging To check whether the battery pack charges properly during operation, do the following: Note: Before you begin, install a discharged battery pack or a battery pack that has less than 50% of the total power remaining in the computer. 1.
• 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. Note: Recharging will take at least three hours, even if the battery status indicator does not turn on. 5. Replace the system board if the new battery pack is not charged.
Chapter 3. Important service information This chapter presents the following information: • “Recovering the computer settings” on page 25 • “Using passwords” on page 25 • “Power management” on page 26 Recovering the computer settings This topic provides information about the recovery programs that are available for you to recover the computer settings.
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. If a power-on password has been set, the user must enter the password before starting the operating system. • Supervisor password: A supervisor password protects the system information stored in the BIOS program.
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.
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Chapter 4. Status indicators This topic presents the system status indicators that show the status of the computer. 3 2 1 Table 1. Status indicators Indicator Meaning 1 • White: The Active Protection System program is enabled. 2 Active Protection System™ (APS) status indicator Device access status indicator • Off: The Active Protection System program is disabled. Green: The hard disk drive is reading or writing data.
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Chapter 5. Fn key combinations The following table describes the functions of Fn key combinations. Table 2. Function key combinations Key combination Description Fn+Esc Enables or disables the keyboard light. Fn+F1 Puts the computer into sleep mode. To resume normal operation, press the Fn key only. Fn+F2 Enables or disables the backlight feature of the computer screen. Fn+F3 Switches between the computer display and an external monitor.
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Chapter 6. Locations This chapter provides information about component locations. Locating computer controls, connectors, and indicators This topic introduces the locations of the computer controls, connectors, and indicators. Front view 3 1 2 3 13 12 11 4 5 10 6 7 9 6 8 Figure 1. Front view 1 Camera 8 USB 2.0 connector 2 Keyboard light 9 Fingerprint reader 3 Microphones 10 Touch pad 4 ac power connector 11 Touch pad buttons 5 RJ45 Ethernet connector 12 Media card reader slot 6 USB 3.
Bottom view 4 1 2 3 4 10 5 6 7 9 8 Figure 2. Bottom view 1 Battery lock 6 Fan louvers 2 Battery pack 7 Monitor connector 3 Battery latch 8 Always On USB connector 4 Speakers 9 Combo audio jack 5 Security-lock slot 10 Bottom slot cover Note: The memory modules, hard disk drive, and wireless cards are located underneath the bottom slot cover.
– Self-service CRUs: These CRUs unplug or are held by no more than two screws. Examples of these types of CRUs include the ac power adapter, power cord, battery, and hard disk drive. Other self-service CRUs depending on product design might include the memory module, wireless card, keyboard, and palm rest with finger print reader and touch pad. – Optional-service CRUs: These CRUs are isolated parts within the computer that are concealed by an access panel that is typically secured by more than two screws.
1 22 2 21 3 4 20 23 5 19 24 6 18 17 7 16 8 15 10 11 14 12 13 Table 3. Major FRUs and CRUs No.
Table 3. Major FRUs and CRUs (continued) No. FRU description CRU ID 10 Hard disk drive * 11 Hard disk drive bracket * 12 Battery pack * 13 Bottom slot cover * 14 Base cover N 15 Wireless LAN card ** 16 Memory module * 17 mSATA solid-state drive * 18 Speakers N 19 Media card reader slot board N 20 Thermal module assembly N 21 Power board with cable N 22 Keyboard ** 23 IO Board CRT Port Cable N 24 IO Board Cable N Note: The LCD module ( 1 ) is not a FRU or CRU.
1 2 7 6 3 4 5 Table 4. LCD FRUs No. FRU description CRU ID 1 LCD Bezel N 2 Hinges N 3 Camera and microphones board N 4 LCD cover N 5 Antennas N 6 LCD cable N 7 LCD panel N 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.
Table 5. Part numbers for non-LCD module FRUs and CRUs No.
Table 5. Part numbers for non-LCD module FRUs and CRUs (continued) 8 10 10 10 10 11 12 13 14 15 40 LK490s DC-IN Bracket 90202491 LK491s DC-IN Cable 90203374 HTS545032A7E660 6G 7mm 5.4K 320G HDD 16200405 MQ01ABF032 7mm 5.4K rpm 320G HDD TPG 16200330 ST320LT012 6G 7mm 5.4K 320G HDD 16200384 WD3200LPVX-08V0TT0 6G 7 5.4K 320G HDD LI 16200378 HTS725032A7E630 7 7.2K 320G HDD 16200194 TSB MQ01ACF032 6G 7mm 7.2K 320G HDD LI 16200510 WD5000LPVX-08V0TT0 6G 7 5.
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Table 6. Part numbers for LCD-module FRUs (continued) 7 LK490s LCD Cable 90202490 SEC LTN140AT28-401 HD AG F LED1 NB LCD 18200791 LGD LP140WH2-TLT1 HD AG F LED1 NB LCD 18200792 AUO B140XTN03.1 HD LED 1 AG LCD 18200693 CMI N140BGE-L33 HD AG F LED1 NB LCD 18201034 LCD panel Note: Camera and microphone board ( 3 ) is not a separate FRU and cannot be ordered separately. Chapter 6.
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Chapter 7. FRU replacement notices This chapter presents notices related to removing and replacing parts. Read this chapter carefully before replacing any FRU. CRU statement for customers: You can resolve some problems with your product with a replacement part you can install yourself, called a “Customer Replaceable Unit” or “CRU.” Some CRUs are designated as self-service CRUs and others are designated as optional-service CRUs. Installation of self-service CRUs is your responsibility.
• If you are instructed to replace a FRU but the replacement does not solve the problem, reinstall the original FRU before you continue. • Some computers have both a processor board and a system board. If you are instructed to replace either the processor board or the system board, but the replacement does not solve the problem, reinstall the original board, and then replace the other one. • If an adapter or a device consists of more than one FRU, any of the FRUs might be the cause of the error.
Chapter 8. Removing or replacing a FRU This chapter provides instructions on how to remove or replace a FRU. CRU statement for customers: You can resolve some problems with your product with a replacement part you can install yourself, called a “Customer Replaceable Unit” or “CRU.” Some CRUs are designated as self-service CRUs and others are designated as optional-service CRUs. Installation of self-service CRUs is your responsibility.
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 1 . Hold the battery latch in the unlocked position, and then remove the battery pack 2 . 1 2 2 When installing: Install the battery pack in the slot. Ensure that the battery latch and the battery lock are in the locked positions.
Removal steps of the bottom slot cover Remove the screw 1 , and then remove the bottom slot cover 2 . 1 2 Step Screw (quantity) Color Torque 1 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: • “1010 Battery pack” on page 48 • “1020 Bottom slot cover” on page 48 Chapter 8.
Removal steps of the memory modules Release the two latches on both edges of the socket at the same time 1 , and then carefully remove the memory module 2 . 1 2 1 When installing: Insert the notched end of the memory module into the memory slot at an angle of about 20 degrees. Press the memory module firmly, and pivot it downward until it snaps into place. Ensure that the memory module is firmly installed in the slot and does not move easily.
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. Ensure that the customer has a current backup of the data before doing this task. Attention: • Do not drop the drive or apply any physical shock to it.
Remove the hard disk drive assembly. 3 When installing: Ensure that the hard disk drive connector is attached firmly. Removal steps of the hard disk drive bracket Remove the screws 1 . 1 1 1 1 Step Screw (quantity) Color Torque 1 M3 × 2.8 mm, flat-head, nylon-coated (4) Black 0.392 Nm (4.0 kgf-cm) Remove the hard disk drive bracket.
Removal steps of the PCI Express Mini Card for wireless LAN In steps 1 , 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 2 . 2 1 1 Step Screw (quantity) Color Torque 2 M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.85 kgf-cm) Remove the PCI Express Mini Card for wireless LAN.
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. • Never remove the drive while the computer is operating or in suspend mode. Removal steps of the mSATA solid-state drive Remove the screws 1 .
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: • “1010 Battery pack” on page 48 • “1020 Bottom slot cover” on page 48 Removal steps of the keyboard Remove the screws 1 . 1 1 1 When installing: Ensure that the screws are firmly installed and the keyboard is secured.
Push hard to unlatch the keyboard. 2 2 Carefully detach the keyboard and then lift it up until you can see how it is connected.
Detach the keyboard connector, and then remove the keyboard. 6 4 5 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 • “1080 Keyboard” on page 55 Chapter 8.
Removal steps of the keyboard bezel Remove the screws 1 and 2 . 1 1 2 1 2 1 1 2 1 1 1 1 1 Step Screw (quantity) Color Torque 1 M2 × 6 mm, flat-head, nylon-coated (10) Black 0.181 Nm (1.85 kgf-cm) 2 M2 × 2.5 mm, flat-head, nylon-coated (3) Black 0.181 Nm (1.
Remove the screws 3 , and then detach the connectors. 4 5 3 3 7 6 8 9 Step Screw (quantity) Color Torque 3 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.
Detach the keyboard bezel from the frame, and then remove the keyboard bezel.
Remove the fingerprint board with the fingerprint board cable. 3 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 • “1080 Keyboard” on page 55 • “1090 Keyboard bezel” on page 57 Removal steps of the power board Remove the screw 1 , and then remove the power board. 2 1 Step Screw (quantity) Color Torque 1 M2 × 3 mm, flat-head, nylon-coated (1) Black 0.181 Nm (1.
Removal steps of the media card reader slot board Detach the cables. 1 2 3 When installing: Ensure that the cables are attached firmly.
Remove the screws 4 , and then remove the media card reader slot board. 4 5 4 4 Step Screw (quantity) Color Torque 4 M2 × 3 mm, flat-head, nylon-coated (3) Black 0.181 Nm (1.
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.
Removal steps of the system board assembly Detach the connectors. 2 6 1 3 4 5 When installing: Ensure that all the connectors are attached firmly. Remove the screws 7 . 7 7 7 Step Screw (quantity) Color Torque 7 M2 × 3 mm, flat-head, nylon-coated (3) Black 0.181 Nm (1.85 kgf-cm) Chapter 8.
Lift the system board assembly carefully, and then detach the connector 9 . 9 8 When installing: Ensure that the connector is attached firmly to the system board.
Removal steps of the thermal module assembly Detach the connector 1 . Loosen the screws 2 to 7 . 3 4 5 2 7 6 1 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. 8 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 a and b as shown in the following illustrations.
For models with an integrated thermal module assembly a For models with a discrete thermal module assembly a b 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 • “1080 Keyboard” on page 55 • “1090 Keyboard bezel” on page 57 68 Hardware Maintenance Manual
Removal steps of the speakers Remove the screws 1 , and then remove the speakers. 1 1 1 2 1 1 Step Screw (quantity) Color Torque 1 M2 × 3.1 mm, flat-head, nylon-coated (5) Black 0.181 Nm (1.85 kgf-cm) Chapter 8.
Removal steps of the LCD unit and the base cover Release the antenna cables from the cable guides. Remove the screws 1 . 1 1 1 1 1 1 Step Screw (quantity) Color Torque 1 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. Tension could damage the cables and wires.
Remove the LCD unit from the base cover. 2 2 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.
1 2 3 5 4 1 Barcode label 4 COA label 2 Rating label 5 Genuine Microsoft label 3 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 • “1080 Keyboard” on page 55 • “1090 Keyboard bezel” on page 57 • “1140 System board assembly” on page 63 • “1160 Speakers, LCD unit and base cover” on page 68 Removal steps of the DC-in connector Remove the DC-in connector
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 1 . 1 1 Step Screw (quantity) Color Torque 1 M2 × 4 mm, flat-head, nylon-coated (2) Black 0.181 Nm (1.85 kgf-cm) Remove the LCD front bezel. 2 2 2 2 When installing: Ensure that all the latches are attached firmly. Then secure the bezel with the screws.
• • • “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 1 and then peel off the camera and microphone board 2 . Note: The camera and microphone board is adhered to the top center of the LCD cover. 1 2 When installing: Adhere the camera and microphone board to the top center of the LCD cover and adjust the placement to ensure that the connector is attached firmly.
Removal steps of the LCD panel and the LCD cable Remove the screws 1 , and then remove the LCD panel 2 . 1 1 2 1 1 Step Screw (quantity) Color Torque 1 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. 4 5 3 When installing: Ensure that the cable is attached firmly. Chapter 8.
Removal steps of the hinges Remove the screws 1 . 1 1 1 1 1 1 Step Screw (quantity) Color Torque 1 M2 × 3 mm, flat-head, nylon-coated (6) Black 0.181 Nm (1.85 kgf-cm) Remove the hinges.
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. 1 1 2 2 1 1 1 1 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. Tension could damage the cables and wires. Remove the antenna assembly. 3 3 Chapter 8.
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Appendix A. Notices Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local 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.
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.
