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Summary of Contents for dynabook TECRA A4-J Series
- Page 1 User Maintenance Manual TECRA A4*/A5*-J TECRA A4*/A5*-K TECRA A4*/A5*-KW SATELLITE PRO A4*/5*-J SATELLITE PRO R4*/5*-J SATELLITE PRO A4*/5*-K SATELLITE PRO R4*/5*-K PORTEGE X4*-K Series...
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Page 2: Revision History
2024-04-01 Initial release Copyright © 2024 Dynabook Inc. All rights reserved. Under the copyright laws, this manual cannot be reproduced in any form without the prior written permission of Dynabook. No patent liability is assumed, with respect to the use of the information contained herein. -
Page 3: Safety Icons
TECRA A40/A50-K/SATELLITE PRO A40/50-K Series Trademarks Intel, Intel logo, Thunderbolt, Thunderbolt logo are trademark of Intel Corporation or its subsidiaries in the United States and/or other countries. Microsoft, Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. ®... - Page 4 TECRA A40/A50-K/SATELLITE PRO A40/50-K Series Improper repair of the computer may result in safety hazards. Dynabook requires service technicians and authorized dealers or service providers to ensure the following safety precautions are adhered to strictly. ■ Be sure to fasten screws securely with the right screwdriver. If a screw is not fully fastened, it could come loose, creating a danger of a short circuit, which could cause overheating, smoke or fire.
- Page 5 TECRA A40/A50-K/SATELLITE PRO A40/50-K Series Introduction This manual is based on the maintenance manual for service technicians and has been edited for use when customers perform repairs themselves. The notes are summarized below, and if there are any discrepancies with the explanation in the main text, these notes should take precedence.
- Page 6 TECRA A40/A50-K/SATELLITE PRO A40/50-K Series or leakage of liquid crystal. If the liquid crystal comes into contact with your hands, rinse with water for more than 15 minutes and consult a doctor if you feel any abnormalities. ‒ Before covering, make sure all parts are in place and that there are no missing screws or foreign objects.
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Page 7: Table Of Contents
TECRA A40/A50-K/SATELLITE PRO A40/50-K Series Table of Contents Replacement Procedures Chapter 1 1.1 Safety Precautions ................1-2 1.2 Before You Begin .................. 1-4 1.3 Disassembly Procedure ..............1-4 1.4 Assembly Procedures ................. 1-5 1.5 Tools and Equipment ................1-6 1.6 Screw Tightening Torque ..............1-6 1.7 Grip Color .................... -
Page 8: Chapter 1 Replacement Procedures
Chapter 1 Replacement Procedures This chapter describes the procedure for removing and replacing the field replaceable units (FRUs) in the PC. It may not be necessary to remove all the FRUs in order to replace one. The chart below provides a guide as to which other FRUs must be removed before a particular FRU can be removed. -
Page 9: Safety Precautions
Replacement Procedures Table 1-1 the case for the following example 1.9 Memory media 1.10 SIM card (3G/LTE model) 1.11 Cover Assembly and Base Assembly 1.27 LCD Cover Assembly Chart Notation The chart shows the case for the following example: Removing the SSD All FRUs (1.9 Memory media,... - Page 10 Replacement Procedures 1. Always use the genuine battery that is authorized by Dynabook or compatible with the unit. Since other battery packs have different specifications, they may be incompatible with the unit, and may burst or explode. Never heat or disassemble the battery pack, as that could cause leakage of alkaline solution.
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Page 11: Before You Begin
Replacement Procedures 1.2 Before You Begin Take note of the following points before starting work. Always remove the AC adaptor and battery pack before commencing any of the procedures. The procedure for removing the battery pack is described in 1.12 Battery pack. -
Page 12: Assembly Procedures
Replacement Procedures For spring connectors, lift up the stopper frees the cable and allow it to be pulled out. To reconnect, hold the stopper in the up position and insert the cable, then lower the stopper to secure the cable. Pull the cable to ensure that it is securely connected. -
Page 13: Tools And Equipment
Overtightening can damage components and screws; undertightening can result in electrical shorts or other damage if screws or components come loose. Dynabook recommends that you use an electric screw driver for quick and easy operations. 0.167 N•m (1.7 kgf cm) ■... -
Page 14: Grip Color
Replacement Procedures 1.7 Grip Color Some screws have a colored Grip area to help you determine the length of the screw. [Normal grip] ■ Normal length screws: Blue ■ Special length screws: Green ■ Tight grip screw: Yellow “Special length screw” means screws whose length is indicated in an integral number to the first decimal places such as 2.5 mm, 2.6 mm and so Grip area 1.8 Screw Notation... -
Page 15: Sim Card (3G/Lte Model)
Replacement Procedures 1.9.1 Installing the Memory media To insert memory media, follow the steps as detailed below. ■ Turn the Memory media so that the contacts (metal areas) face down. ■ Insert the Memory media into the Memory media slot on your computer. ■... -
Page 16: Removing A Sim Card
Replacement Procedures ■ Insert the SIM card tray into the SIM card slot, and push the center of the tray to close it. Press gently until it locks into place. Figure 1-3 Installing the SIM card 1. SIM card slot 3. - Page 17 Replacement Procedures Figure 1-4 Removing the Base Assembly (1) ■ Turn the computer over and open the display panel. Release the latches from the lower left of the computer as shown in the figure below. Figure 1-5 Removing the Base Assembly (2) ■...
- Page 18 Replacement Procedures Figure 1-6 Removing the Base Assembly (3) Base Assembly Cover Assembly 1.11.2 Installing the Base Assembly To install the Base Assembly, follow the steps below. ■ Set the Cover Assembly on the Base Assembly while securing the latches. Figure 1-7 Installing the Base Assembly ■...
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Page 19: Battery Pack
Replacement Procedures 1.12 Battery pack 1.12.1 Removing the Battery pack To remove the battery pack, follow the steps below. Take care not to short circuit the terminals when removing the battery pack. Similarly, do not drop, knock, scratch, disassemble, twist, or bend the battery pack. -
Page 20: Installing The Battery Pack
Dispose always the used battery pack in accordance with the laws and ordinances of your local authority. Use only the batteries approved by Dynabook. Check the battery’s terminals visually. If they are dirty, wipe them clean with a dry cloth. -
Page 21: Memory Module
Replacement Procedures 1.13 Memory module 1.13.1 Removing the Memory module To remove the memory module, follow the steps as detailed below: Do not touch the connectors on the memory module or on the computer. Dust or stains on the connectors may cause memory access problems. Never press hard or bend the memory module. -
Page 22: Ssd
Replacement Procedures Figure 1-12 Installing the memory module ■ Stick one piece of MEM INSU in place. After installing the memory module, make sure that the memory module is secured with the left and right latches. 1.14 SSD 1.14.1 Removing the SSD To remove the SSD, follow the steps below. -
Page 23: Smart Card Slot
Replacement Procedures 1.14.2 Installing the SSD To install the SSD, follow the steps below. To avoid damage, always hold the SSD only by its sides. To prevent the SSD from being distorted when installing the SSD pack into the computer, do not press the center of the SSD pack. Always hold the SSD pack by its sides. - Page 24 Replacement Procedures Figure 1-15 Removing the Smart Card slot (1) Connector Connector ■ Peel off the INSU CUSHION SC from the Smart Card slot. Figure 1-16 Removing the Smart Card slot (2) INSU CUSHION SC ■ Disconnect the Smart Card FFC from the Connector on the system board.
- Page 25 Replacement Procedures Figure 1-17 Removing the Smart Card slot (3) Connector Smart Card Slot FFC Smart Card Slot ■ Disconnect the Smart Card Slot FFC from the connector on the Smart Card slot. Figure 1-18 Removing the Smart Card slot (3) 1.15.2 Installing the Smart Card slot To install the Smart Card slot, follow the steps below.
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Page 26: Wi-Fi Card
Replacement Procedures 1.16 Wi-Fi card 1.16.1 Removing the Wi-Fi card To remove the Wi-Fi card, follow the steps below. ■ Peel off the INSU SQUARE. ■ Disconnect the Wi-Fi antenna cable from the connector on the Wi-Fi card (black cable from "AUX" or "1" and white cable from "MAIN" or "2"). ■... -
Page 27: Lte Module
Replacement Procedures 1.17 3G/LTE module 1.17.1 Removing the 3G/LTE module To remove the 3G/LTE module, follow the steps below. ■ Peel off the INSU SQUARE. ■ Disconnect the 3G/LTE ANTENNA cables from the connectors on the 3G/LTE module. (red tube from "MAIN") ■... -
Page 28: Fans
Replacement Procedures 1.18 Fans 1.18.1 Removing the Fans To remove the Fans, follow the steps below. ■ Disconnect the Fan Harness from the Connector on the System Board. ■ Remove the following screws and the Fan from the Cover Assembly. Figure 1-22 Removing the Fan Fan Harness Connector... -
Page 29: Click Pad
Replacement Procedures Figure 1-23 Removing the Fin When removing the Fin, be sure to remove the screws in the reverse order of the number marked on the Fin. 1.19.2 Installing the Fin To install the Fin, follow the steps below. ■... - Page 30 Replacement Procedures Figure 1-24 Removing the Click pad (1) Connector Connector Click Pad FFC Fingerprint ■ Remove the AL TAPE from the Click Pad, and then peel off the Click Pad from the Cover Assembly. Figure 1-25 Removing the Click pad (2) Click Pad 1.20.2 Installing the Click pad To install the Click pad, follow the steps below.
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Page 31: Speaker
Replacement Procedures Figure 1-26 Installing the Click pad ■ Stick the AL TAPE to the Click pad. ■ Connect the Click Pad FFC and Fingerprint FFC to the Connector on the Click Pad and the Connector on the System Board. 1.21 Speaker 1.21.1 Removing the Speaker To remove the Speaker, follow the steps below. -
Page 32: Installing The Speaker
Replacement Procedures ■ Remove the Speakers from the Cover Assembly. Figure 1-28 Removing the Speaker (2) Speaker Speaker 1.21.2 Installing the Speaker To install the Speaker, follow the steps below. ■ Set the speakers to the Cover Assembly in place. ■... -
Page 33: Lte Antennas
Replacement Procedures (For LTE models) When replacing the speaker with a new one, stick one piece of Gasket on the speaker in place. Gasket 1.22 3G/LTE antennas 1.22.1 Removing the 3G/LTE antennas To remove the 3G/LTE antennas, follow the steps below. ■... -
Page 34: System Board
Replacement Procedures Figure 1-31 Removing the 3G/LTE antennas (2) 3G/LTE antenna (Aux) 3G/LTE antenna (Main) Do not reuse the removed 3G/LTE antennas. Be sure to use new 3G/LTE antenna. 1.22.2 Installing the 3G/LTE antennas To install the 3G/LTE antennas, follow the steps below. ■... -
Page 35: Removing The System Board
Replacement Procedures 1.23.1 Removing the System board To remove the system board, follow the steps below. ■ Disconnect the Keyboard FPC from the Connector and Keyboard Backlight Harness from the Connector on the System Board. Figure 1-32 Removing the system board (1) Connector Connector Keyboard Backlight Harness... -
Page 36: Installing The System Board
Replacement Procedures Figure 1-34 Removing the system board (3) 1.23.2 Installing the System board To install the system board, follow the steps below. ■ Set the system board in place. Figure 1-35 Installing the system board ■ Secure the system board with the screws. ■... -
Page 37: Dc In Jack
Replacement Procedures 1.24 DC IN jack 1.24.1 Removing the DC IN jack To remove the DC IN jack, follow the steps below. ■ Release three screws securing the right display hinge and rotate the display hinge to upright position. ■ Release the DC IN jack Harness from the guide, and remove the DC IN jack from the slot on the Cover Assembly. -
Page 38: Keyboard/Cover Assembly
Replacement Procedures Figure 1-37 Removing the USB board 1.25.2 Installing the UBS board To install the USB board, follow the step below. ■ Set the USB board to the Cover Assembly in place and secure it with the screws. ■ Rotate the left display hinge to original position and secure it with two screws. - Page 39 Replacement Procedures Figure 1-38 Removing the keyboard/Cover Assembly LCD Assembly Keyboard/Cover Assembly 1.26.2 Installing the Keyboard/Cover Assembly To install the Keyboard/Cover Assembly, follow the steps below. ■ Set the Keyboard/LCD Assembly on the Cover Assembly and secure them with the screws. Note: When replacing the Keyboard/Cover Assembly with a new one ■...
- Page 40 Replacement Procedures ■ Stick three pieces of GASKET on the cover assembly in place. ■ (For LTE models) Stick the one piece of AL Tape on the cover assembly in place. ■ (For LTE models) Stick two piece of D TAPE on the cover assembly in place and remove the separator on them.
- Page 41 Replacement Procedures ■ (For LTE models) Stick one piece of Conductive Tape and GASKET on the cover assembly in place. ■ Stick the INSU KB on the cover assembly in place. INSU KB 1-34...
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Page 42: Lcd Assembly
Replacement Procedures 1.27 LCD Assembly 1.27.1 Removing the LCD unit To remove the LCD unit, follow the steps below. ■ Detach the LCD mask from the top side of the LCD cover first. Release the latches from the second one (on the left as marked in the following figure) to the right. - Page 43 Replacement Procedures Figure 1-40 Removing the LCD unit (2) ■ Take out the LCD unit. Be careful that the LCD/Webcam harness is connected to the connector on the back of the LCD unit. ■ Peel the pull tape and disconnect the LCD/Webcam harness from the connector on the LCD unit.
- Page 44 Replacement Procedures 1.27.2 Installing the LCD unit To install the LCD unit, follow the steps below. ■ Stick four pieces of bound & detach tape on the LCD cover and peel off the separators on the tapes. Figure 1-42 Installing the LCD unit (1) ■...
- Page 45 Replacement Procedures Figure 1-43 Installing the LCD unit (2) ■ Connect the LCD/Webcam harness to the connector on the LCD unit and secure it with the pull tape and glass tape. When connect the LCD harness, make sure to connect the right and left side at the same time as shown in the figure below.
- Page 46 Replacement Procedures Figure 1-45 Installing the LCD unit (4) ■ Remove the separators on the top and bottom side of the LCD mask. When replacing the LCD mask with a new one: Stick the CAMERA PANEL on the LCD mask in place and remove the separator on it.
- Page 47 Replacement Procedures Figure 1-46 Installing the LCD unit (5) ■ Remove the separators from the stick tapes on both left and right edge side of the LCD cover. ■ Set the LCD mask on the LCD cover while engaging all the latches. Figure 1-47 Installing the LCD unit (6) 1-40...
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Page 48: Removing The Display Hinges
Replacement Procedures 1.28 Display hinges 1.28.1 Removing the display hinges To remove the display hinges, follow the steps below. ■ Release the following screws and remove the left & right hinges. (Described as “1” in the figure) ■ S2x2.5BT (Described as “2” in the figure) ■... -
Page 49: Installing The Wi-Fi Antennas
Replacement Procedures 1.29.2 Installing the Wi-Fi antennas To install the Wi-Fi antennas, follow the steps below. ■ Stick new Wi-Fi antennas (AUX/Main) in place. Figure 1-49 Sticking the Wi-Fi antennas Wi-Fi antenna (AUX) Wi-Fi antenna (Main) ■ Arrange the Wi-Fi antenna cables in place as shown in below figure. Figure 1-50 Arranging the Wi-Fi antenna cables 1-42... -
Page 50: Camera Module
Replacement Procedures 1.30 Camera module 1.30.1 Removing the Camera module To remove the camera module, follow the steps below. ■ Disconnect the camera FPC from the connector on the camera module and peel off the FPC from the LCD cover. Figure 1-51 Removing the camera module (1) ■... -
Page 51: Installing The Camera Module
Replacement Procedures 1.30.2 Installing the Camera module When replacing the LCD cover with a new one: Stick six pieces of CUSHION on the LCD cover in place for models with LCD module G33C000A4110, G33C000A6110 or G33C000A7110. Stick two pieces of Gasket on the LCD cover in place for models with LCD module G33C000AM110 or G33C0009U110. - Page 52 Replacement Procedures Figure 1-53 Installing the Camera module (1) ■ Arrange the LCD/Webcam harness to the guides on the LCD cover. ■ (For some models) Stick the SQUARE CUSHION to the LCD cover. For models with LCD module G33C0009U110 or G33C000AM110, please use SQUARE CUSHION GM9044309111.
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Page 53: Chapter 2 Exploded View
Chapter 2 Exploded view 2.1 Exploded view This chapter contains exploded views of each replaceable unit (FRU). - Page 54 Exploded view...
- Page 55 Exploded view...
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Page 56: Appendix A Handling The Lcd Module
Appendix A Handling the LCD Module A.1 Precautions for handling the LCD module The LCD module can be easily damaged during assembly or disassembly. Observe the following precautions when handling the LCD module: 1. When installing the LCD module in the LCD cover, be sure to seat it so that it is properly aligned and maximum visibility of the display is maintained. - Page 57 Handling the LCD Module 3. If the panel’s surface gets dirty, wipe it with cotton or a soft cloth. If it is still dirty, try breathing on the surface to create a light condensate and wipe it again. If the surface is very dirty, we recommend a CRT cleaning agent. Apply the agent to a cloth and then wipe the panel’s surface.
- Page 58 Handling the LCD Module 6. CMOS-LSI circuits are used in the module, so guard against damage from electrostatic discharge. Be sure to wear a wrist or ankle ground when handling the module. 7. Do not expose the module to direct sunlight or strong ultraviolet rays for long periods.
- Page 59 Handling the LCD Module 9. Do not disassemble the LCD module. Disassembly can cause malfunctions. 10. If you transport the module, do not use packing material that contains epoxy resin (amine) or silicon glue (alcohol or oxide). These materials can release gas that can damage the panel’s polarization.
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