Toshiba tecra 750 Service Manual

Tecra 750 Series Disassembly Overview

The information offered in this section is an overview of the Maintenance Manual, Chapter 4, Replacement Procedures. If you have any questions or concerns regarding the proper procedure please refer to the Maintenance Manual through the Toshiba Service and Support Website before you proceed.

This section explains how to remove Field Replaceable Units (FRUs). It may not be necessary to remove all the FRUs in order to replace one.

The chart is a guide to which FRUs need to be removed in order to remove others. The section numbers on the chart refer to the sections in the Maintenance Manual, Chapter 4.

Always start by removing the battery pack, next, optional items such as the optional PC card and optional memory module, then follow the line on the chart to determine which FRU you must remove next in order to repair the one you think is causing the computer to operate improperly.

To remove the battery pack, follow the steps below.

CAUTION: When handling battery packs, be careful not to short circuit the terminals. Also do not drop, hit or otherwise apply impact; do

not scratch or break the casing.

1. Turn off the power to the computer. Disconnect the AC adapter and all external cables connected to the computer.

2. Turn the computer upside down with the front facing you and push the battery lock up to unlock it. A red dot shows when the lock is in the unlock position.

3. Pull the battery’s release lever out and slide it to the left to pop the battery up slightly.

4. Grasp the battery pack and lift it out.

To install the battery pack, follow the steps below.

WARNING: The battery pack is a lithium ion battery, which can explode if not properly replaced, used, handled, or disposed of. Dispose of the battery as required by local ordinances or regulations. Use only batteries recommended by Toshiba as replacements.

NOTE: Check the battery terminals visually. If they are dirty, wipe them clean with a dry cloth.

1. Turn off the power to the computer. Disconnect the AC adapter and all external cables connected to the computer.

2. Make sure the battery release lever is pulled out, then carefully insert the new or recharged battery pack.

3. Place your fingers just above two pins on the battery pack that fit into the locking mechanisms in the battery socket. Push the battery pack down carefully until it locks into place.

4. Push the battery lock down to secure it. The red dot will be covered.

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Tecra 750 Series Disassembly Overview, (cont.)

To remove the optional PC card, make sure the computer is in boot mode, then follow the steps below.

1. Turn off the power to the computer. Disconnect the AC adapter and all external cables connected to the computer.

2. Remove the battery pack.

3. Open or remove the PC card slot cover.

4. Press in slightly on the eject button for the upper and/or lower card and the button will pop out fully.

5. Press the button firmly to pop the PC card out partially.

6. Grasp the PC card and remove it.

7. Close or replace the PC card slot cover.

To install a PC card, follow the steps below.

1. Open or remove the PC card slot cover.

2. Insert the PC card and press gently to ensure a firm connection.

3. Close the slot’s cover or replace the cover with an appropriate one.

4. Install the battery pack.

To remove the Selectable Bay module, follow the steps below.

1. Turn off the power to the computer. Disconnect the AC adapter and all external cables connected to the computer.

2. Remove the battery pack.

3. Turn the computer upside down and slide the Selectable Bay lock so that a red mark appears. If cables are attached to the computer, be careful not to put pressure on the cables.

4. Lay the computer back down and pull out the release lever.

5. Push the release lever in firmly to pop the Selectable Bay module partially out of the bay.

6. Grasp the module and pull it out.

CAUTION: The Selectable Bay modules can become hot with use. Be careful when removing the module.

Install the Selectable Bay modules as described below.

1. Verify the Selectable Bay lock is unlocked.

2. Insert the module in the computer and press until it locks into place.

3. Fold the release lever into the closed position.

4. Slide the Selectable Bay lock so that the red mark is covered.

5. Install the battery pack.

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Tecra 750 Series Disassembly Overview, (cont.)

To install the Selectable Bay cover, follow the steps below.

1. To install the cover, first remove the Selectable Bay module then hold the cover by the two finger grips and push it into place until you hear the latches click.

2. To remove the cover, grasp the two finger grips and pull the cover out.

To disassemble the FDD, follow the steps below.

1. Remove six M2x6 silver screws.

2. Turn the FDD over and release two latches securing the upper plastic frame and lower plastic frame. Turn it back over and lift off the cover.

3. Lift off the upper shield cover, unseat the flexible cable connector from the lower plastic frame, then lift out the FDD.

4. Pull the flexible cable out of the FDD connector.

5. Remove four M2.5x2.8 black screws and remove the FDD from the bracket.

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Tecra 750 Series Disassembly Overview, (cont.)

To assemble the FDD, follow the steps below.

1. Seat the FDD in the bracket and secure the bracket with four M2.5x2.8 black screws in the order numbered on the case. Tighten screws to a torque of less than 2.2 kgfcm.

2. Insert the flexible cable into the connector. Press gently to ensure a firm connection.

3. Seat the FDD in the lower plastic frame and set the upper shield cover in place.

4. Seat the flexible cable connector into the lower plastic frame.

5. Set the upper plastic frame in place, snap the two latches closed and secure

six M2x6 silver screws.

To disassemble the CD-ROM drive, follow the steps below.

1. Remove four M2x3 screws and three M2x6 silver screws securing the frame to the CD-ROM drive.

2. Slide the drive partially out of the drive frame.

3. Remove the connector cover and lift out the flexible cable.

CAUTION: Be very careful not to press on the top or bottom of the HDD. Pressure can destroy data or damage the drive.

To remove the HDD pack, follow the steps below.

1. Turn off the power to the computer. Disconnect the AC adapter and all external cables connected to the computer.

2. Remove the battery pack.

3. Turn the computer upside down.

4. Slide the cover to the right and push the HDD pack forward until the back edge is aligned with a marker next to the HDD slot.

5. Lift up on the cover to remove the HDD pack.

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Tecra 750 Series Disassembly Overview, (cont.)

To disassemble the HDD Pack, follow the steps below.

1. After removing the HDD pack, lift the left end of the cover up.

2. Slide the cover all the way to the right.

3. Lift the cover up and remove it.

4. Remove four M2.5x6 silver screws from HDD pack.

5. Remove the HDD tray and connector cover.

6. Remove four M3x4 flat-head screws.

7. Remove the flexible cable.

CAUTION: Do not try to disconnect by pulling on the flexible cable.

CAUTION: Do not apply pressure to the top or bottom of the HDD.

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Tecra 750 Series Disassembly Overview, (cont.)

To assemble the HDD pack, follow the steps below.

1. Connect the flexible cable connector to the HDD.

2. Seat the HDD into the metal cover and secure four M3x4 flat-head screws.

3. Connect the connector cover to the flexible cable connector. When seating the connector cover, match the

positioning pins to the holes on the flexible cable and metal cover.

CAUTION: Don’t hold the HDD by its flat surfaces. It may damage the HDD.

4. Secure four M2.5x6 silver screws.

5. Mount the cover onto the HDD.

To install the HDD pack, follow the steps below.

1. Align the HDD pack with a marker on the computer and seat the HDD so that tabs on the HDD fit into notches on the computer.

2. Make sure the cover is pushed fully to the right and push the HDD back to ensure a firm connection.

3. Slide the cover to the left to lock the HDD into the slot.

4. Install the battery pack.

To remove the memory module(s), make sure the computer is in boot mode and follow the steps below.

CAUTION: Do not try to remove a memory module(s) with the computer turned on. You can damage the computer and the memory module(s).

1. Turn off the power to the computer. Disconnect the AC adapter and all external cables connected to the computer.

2. Remove the battery pack, and HDD.

3. Remove two M2x3 silver screws securing the memory module socket cover and remove the cover.

4. Use a slender object to press two latches on either side of a memory module to the outside and the memory module will pop up.

NOTE: There could be two memory modules.

5. Grasp the memory module by the sides and pull it out.

CAUTION: Do not touch the connectors on the memory module(s) or on the computer. Debris on the connectors may cause memory access problems.

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