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4.1 General
4
4 Replacement Procedures
4.1
General
This section explains how to disassemble the computer and replace Field Replaceable Units (FRUs). It may not be necessary to remove all the FRUs in order to replace one. The chart below is a guide to which FRUs need to be removed in order to remove others. Always start by removing the battery pack, next, optional items such as the optional PC Card, then follow the chart downward removing only those FRUs necessary to reach the one you think is causing the computer to operate improperly. Refer to the example on the following page.
Battery
HDD Expansion memory FDD Keyboard Optical media drive
Wireless LAN unit
CPU
Display assembly Top cover / power button Display mask System board LED / button board Modem Speakers LCD module / cable FL inverter board
Fan
Touch Pad
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4 Replacement Procedures
4.1 General
The example below shows FRUs to be removed before the LED / button board can be removed and repaired or replaced. The LED / button board is overlapped by the top cover which must be removed before the LED / button board can be reached. The top cover is in turn overlapped by the expansion memory, HDD, FDD, keyboard and CD-ROM / DVD-ROM drive. Always starts the disassembly process by removing the battery.
Battery
HDD Expansion memory FDD Keyboard Optical media drive
Wireless LAN unit
CPU
Display assembly Top cover / power button Display mask System board LED / button board Modem Speakers LCD module / cable FL inverter board
Fan
Touch Pad
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4.1 General Safety Precautions
4 Replacement Procedures
Before you begin disassembly, read the following safety precautions and observe them carefully as you work. DANGER: 1. Always use the lithium ion battery pack or backup battery that is authorized by Toshiba or compatible with the unit. Since other battery packs have different specifications, they may be incompatible with the unit, and may burst or explode. Heating or disassembling the battery pack could cause leakage of alkaline solution. Throwing the battery pack into a fire could cause the battery pack to explode. The power supply, FL inverter and other components carry high voltages. To avoid the risk of electric shock when you need to turn on the power of a partially disassembled computer to check its operation, be very careful not to touch connectors or components. Also, do not disassemble individual components in firstlevel maintenance.
2.
WARNING: To avoid the risk of electric shock or other injury: 1. Always turn the power off and disconnect the AC adaptor from the power source. 2. Remove any metal jewelry or accessories such as necklaces, bracelets, or rings. Batteries in the computer retain an electrical charge so there is danger of electrical shock even when the computer is disconnected from an AC power source. 3. Never work with wet or damp hands. 4. The computer contains sharp edges and corners: be careful not to injure yourself. 5. Make sure that all replacement components meet the specifications for the computer and that all cables and connectors are securely fastened. CAUTION: To avoid damage to the computer: 1. When you change a component, be sure the replacement component meets the required specifications. Never use foreign parts. 2. Metal objects such as screws or paper clips which fall into the unit can cause a shortcircuit, fire, or other internal damage. 3. When assembling the computer, make sure you use the correct screws to secure the various pieces in place. Screw sizes are listed in their corresponding figure. Make sure all screws are securely fastened. Loose screws can cause short circuits, resulting in heat, smoke, or fire. 4. Before removing an FRU or other component, make sure all cables to the component have been disconnected. 5. If you use AC power, be sure to use the cable that came with the computer or one recommended by Toshiba.
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4 Replacement Procedures Before You Begin
4.1 General
Look over the procedures in this section before you begin disassembling the computer. Familiarize yourself with the disassembly and reassembly steps. Begin each procedure by removing the AC adaptor and the battery pack as instructed in section 4.2. 1. Do not disassemble the computer unless it is operating abnormally. 2. Use only the correct and approved tools. 3. Make sure the working environment is free from the following elements whether you are using or storing the computer. Dust and contaminates Static electricity Extreme heat, cold and humidity 4. Make sure the FRU you are replacing is causing the abnormal operation by performing the necessary troubleshooting and diagnostics tests described in chapters 2 and 3 of this manual. 5. Do not perform any operations that are not necessary and use only the described procedures for disassembling and installing FRUs in the computer. 6. After removing parts from the computer, place them in a safe place away from the computer so they will not be damaged and will not interfere with your work. 7. You will remove and replace many screws when you disassemble the computer. When you remove screws, make sure they are placed in a safe place and identified with the correct parts. 8. When assembling the computer make sure you use the correct screws to secure the various pieces. Screw sizes are listed in their corresponding figures. 9. The computer contains many sharp edges and corners, so be careful not to injure yourself. 10. After you have replaced an FRU, make sure the computer is functioning properly by performing the appropriate test on the FRU you have fixed or replaced.
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4.1 General Disassembly Procedures The computer has two basic types of cable connectors: Pressure Plate Connectors Standard Pin Connectors
4 Replacement Procedures
To disconnect a Pressure Plate connector, lift up the tabs on either side of the connector's plastic pressure plate and slide the cable out of the connector. To connect the cable to a Pressure Plate connector, make sure the pressure plate is fully lifted and slide the cable into the connector. Secure the cable in place by pushing the sides of the pressure plate down so the plate is flush with the sides of the connector. Gently pull on the cable to make sure the cable is secure. If you pull out the connector, connect it again making sure the connector's pressure plate is fully lifted when you insert the cable. Standard pin connectors are used with all other cables. These connectors can be connected and disconnected by simply pulling them apart or pushing them together. Assembly Procedures After you have disassembled the computer and fixed or repaired the problem that was causing the computer to operate abnormally, you will need to reassemble the computer. Install all the removed FRUs following the steps described in the corresponding sections in this chapter. While assembling the computer, remember the following general points: Take your time, making sure you follow the instructions closely. Most problems arise when you get in a hurry assembling the computer. Make sure all cables and connectors are securely fastened. Before securing the FRU or other parts, make sure that no cables will be pinched by screws or the FRU. Check that all latches are closed securely. Make sure all the correct screws are used to secure all FRUs. Using the wrong screw can either damage the threads on the screw or the head of the screw and may prevent proper seating of an FRU. After installing an FRU in the computer, confirm that the FRU and the computer are functioning properly.
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4 Replacement Procedures Tools and Equipment
4.1 General
The use of Electrostatic Discharge (ESD) equipment is very important for your safety and the safety of those around you. Proper use of these devices will increase the success rate of your repairs and lower the cost for damaged or destroyed parts. The following equipment is necessary to disassemble and reassemble the computer: One M2 Phillips screwdriver to remove and replace screws. One T5 security screwdriver. Tweezers, to lift out screws that you cannot grasp with your fingers. ESD mats for the floor and the table you are working on. ESD wrist strap or heel grounder. Anti-static carpeting or flooring. Air-ionizers in highly static sensitive areas.
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4.2 Battery
4 Replacement Procedures
4.2
Battery
Removing the Battery Pack To remove the battery pack, follow the steps below. 1. 2. Turn the computer upside down with the front of the computer's fan and rear ports facing your body. Slide the battery latch to the right to release it. The battery pack will pop up slightly allowing you to lift it out.
Figure 4-1 Removing the battery
NOTE: For environmental reasons, please return spent battery packs to Toshiba. Installing the Battery Pack To install the battery pack, follow the steps below. 1. Turn the computer's power off. 2. Disconnect all cables connected to the computer. 3. Hold the battery pack so that the label faces down and the connectors on the battery face the connectors on the computer. 4. Gently press down. The battery latch clicks and automatically secures the battery pack in position. WARNING: The battery is a lithium ion battery and can explode if not properly replaced, used, handled or disposed of. Use only batteries recommended by Toshiba as replacements.
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4 Replacement Procedures
4.3 PC Card
4.3
PC Card
Removing a PC Card To remove a PC Card, follow the steps below. 1. Push the eject button for the card you want to release. The button pops out when you release it. 2. Push the eject button once more to pop the PC Card out slightly.
Figure 4-2 Popping out the eject button 3. Grasp the PC Card and remove it. 4. Push the eject button back into place, if necessary. Installing the PC Card To install the PC Card, follow the steps below. 1. Make sure the two eject buttons do not stick out. 2. Insert the PC Card and press gently to ensure a firm connection.
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4.4 Expansion Memory
4 Replacement Procedures
4.4
Expansion Memory
Removing the Expansion Memory To remove the expansion memory, follow the steps below. 1. Turn the computer upside down. 2. Remove the two embedded screws securing the expansion memory cover.
Figure 4-3 Removing expansion memory screws 3. Lift off the expansion memory cover. 4. Gently press out on the latches locking the expansion memory chip into slot A (the bottom most one.) One end of the expansion memory will pop up.
Figure 4-4 Opening the expansion memory latches
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4 Replacement Procedures 5. Grasp the expansion memory and pull it out.
4.4 Expansion Memory
Figure 4-5 Removing the expansion memory into the connector slot CAUTION: Do not touch the connectors on the expansion memory or on the computer. Debris on the connectors may cause memory access problems.
Installing the Expansion Memory To install the expansion memory, follow the steps below. 1. Fit the expansion memory's connectors into the computer's connectors and press carefully to ensure firm contact. CAUTION: Do not touch the connectors on the expansion memory or on the computer. Debris on the connectors may cause memory access problems. 2. Gently, push the expansion memory down until latches on either side engage the expansion memory to hold it in place. 3. Seat the expansion memory cover in place and secure it with two embedded screws.
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4.5 HDD
4 Replacement Procedures
4.5
HDD
CAUTION: When handling the HDD, do not press the top surface as shown by the arrow. Hold it by the sides.
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4 Replacement Procedures
4.5 HDD
Removing the HDD To remove the HDD, follow the steps below. 1. Turn the computer upside down with the optical media drive facing your body. 2. Remove one M2.5x5 black screw and then remove the optical media drive.
Figure 4-6 Removing the optical media drive 3. Remove the four M2.5x5 black screws that secure the HDD to the computer.
Figure 4-7 Unscrewing the HDD 4. With two fingers, pull back on the HDD using the back brackets. The HDD slides out of the connector socket inside the HDD bay.
Figure 4-8 Pulling the HDD out of the connector socket
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4.5 HDD 5. Gently pull the HDD out of the HDD bay.
4 Replacement Procedures
Figure 4-9 Removing the HDD from the HDD bay Installing the HDD To install the HDD, follow the steps below. 1. Turn the computer upside down with the optical media drive facing your body. 2. Gently place the HDD in the HDD bay.
Figure 4-10 Inserting the HDD into the HDD bay 3. With two fingers, slide the HDD into the connector slot using the back brackets and until it snaps into place. 4. Secure the HDD with four M2.5×5 black screws.
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4 Replacement Procedures
4.6 Keyboard
4.6
Keyboard
Removing the Keyboard To remove the keyboard, follow the steps below. 1. Open the display panel until it is almost horizontal. 2. Depress the F1 key on the back row of your keyboard and insert a thin tool into the narrow hole beneath the strip cover.
Figure 4-11 Removing the strip cover 3. Use the tool to gently pry the strip cover away from the computer 4. Remove two M1.7x2 black screws from the top of the keyboard where they secure it to the computer chassis.
Figure 4-12 Removing the keyboard screws
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4.6 Keyboard
4 Replacement Procedures
5. Gently pull the keyboard up from the top and then out. The bottom part of the keyboard has 5 teeth that are inserted into notches in the chassis, so be sure not to break them off as you remove the keyboard.
Figure 4-13 Removing the keyboard from the chassis 6. On the keyboard's bottom side is a keyboard cable. Gently detach it by pulling in back toward the display panel.
Figure 4-14 Disconnecting the keyboard cable 7. Remove the keyboard. Installing the Keyboard To install the keyboard, follow the steps below. 1. Turn the keyboard upside down on the palm rest and connect the keyboard cable to the system board.
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4 Replacement Procedures
4.6 Keyboard
2. Turn the keyboard face up and set it in place. Ensure that the teeth at the bottom of the keyboard match up with and are inserted into the notches in the chassis.
Figure 4-15 Inserting the keyboard 3. Secure the keyboard with two M1.7×2 black screws.
Figure 4-16 Securing the keyboard with screws 4. Replace the strip cover.
Figure 4-17 Replace the strip cover
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4.7 Wireless LAN Unit
4 Replacement Procedures
4.7
Wireless LAN Unit
Removing the Wireless LAN Unit To remove the wireless LAN unit, follow the steps below. 1. Turn the computer upside down and loosen the two embedded screws. 2. Remove the wireless LAN module cover. 3. Disconnect the black and white wireless LAN connector cables.
Figure 4-18 Detaching the connector cables 4. Gently press out on the latches locking the wireless LAN unit into the slot. One end of the wireless LAN unit pops up.
Figure 4-19 Pressing the wireless LAN unit latches 5. Grasp the end of the wireless LAN unit and pull it out.
CAUTION: Do not touch the connectors on the wireless LAN unit or on the computer. Debris on the connectors may cause malfunction.
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4 Replacement Procedures
4.7 Wireless LAN Unit
Installing the Wireless LAN Unit To install the wireless LAN unit, follow the steps below. 1. Fit the wireless LAN unit's connectors into the computer's connectors and press carefully to ensure firm contact. 2. Gently, push the wireless LAN unit down until the latch engages the unit.
Figure 4-20 Pressing the wireless LAN unit into place 3. Attach ends of wireless LAN connector cables. The white aerial cable should be attached to top-most connector (nearer the back side of the computer), the black aerial cable to the bottom-most connector.
Figure 4-21 Attaching the wireless LAN connector cables 4. Restore the wireless LAN module cover.
CAUTION: Do not touch the connectors on the wireless LAN unit or on the computer. Debris on the connectors may cause malfunction.
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4.8 Optical Media
4 Replacement Procedures
4.8
Optical Media
Removing the optical media drive To remove the optical media drive, follow the steps below. 1. Turn the computer upside down with the optical media drive facing your body. 2. Remove one M2.5x5 black screw and then remove the optical media drive.
Figure 4-22
Removing the optical media drive
NOTE: You should not disassemble the optical media drive, as described below, unless you are going to replace it. 3. Remove the two M2x3 silver bracket screws at the back of the optical media drive.
Figure 4-23 Removing the back screws 4. Remove the back bracket.
Figure 4-24 Removing the back bracket
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4 Replacement Procedures
4.8 Optical Media
5. Remove the four M2x3 black bracket screws on either side of the optical media drive.
Figure 4-25 Removing the side screws 6. Remove the optical media drive bracket.
Figure 4-26 Removing the optical media drive bracket 7. Insert a paper clip into the manual eject slot to open the optical media drive. 8. Insert the paper clip into the slot behind the front face's left edge. This pops the front face off.
Figure 4-27 Removing the front face
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4.8 Optical Media Installing the Optical Media To install an optical media drive, follow the steps below.
4 Replacement Procedures
1. Turn the computer upside down with the optical media drive bay facing your body. 2. Slide the optical media drive into optical media drive bay, pushing it forward until it clicks into place. 3. Secure the optical media drive with one M2.5x5 black screw
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