Text preview for : P20_part1_.pdf part of Toshiba P20 Replacement Procedures - 3 File [pag. 44, 31, 7]
Back to : P20_part3_®_.zip | Home
4.1 General
4 Replacement Procedures
4.1
General
This chapter 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 pack Main Module PC Card Wireless Expansion Modem / LAN Memory CPU Bluetooth Unit Module Unit HDD Top Cover Display Assembly LED / Power Button Board Direct Play Button Board Display Mask System Board FL Inverter Board LCD Module Function Key Board Keyboard
Audio Board
CIR Board
TouchPad
Speakers
Fan Set
Satellite P20 Series Maintenance Manual
4-1
4 Replacement Procedures
4.1 General
The example below shows FRUs to be removed before the LED / power button board can be removed and repaired or replaced. The LED / power button board is overlapped by the top cover which must be removed before the LED / power button board can be reached. The top cover is in turn overlapped by the removable main module, HDD and keyboard. Always starts the disassembly process by removing the battery pack.
Battery pack Main Module PC Card Wireless Expansion Modem / LAN Memory CPU Bluetooth Unit Module Unit HDD Top Cover Display Assembly LED / Power Button Board Direct Play Button Board Display Mask System Board FL Inverter Board LCD Module Function Key Board Keyboard
Audio Board
CIR Board
TouchPad
Speakers
Fan Set
4-2
Satellite P20 Series Maintenance Manual
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.
Satellite P20 Series Maintenance Manual
4-3
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.
4-4
Satellite P20 Series Maintenance Manual
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.
Satellite P20 Series Maintenance Manual
4-5
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.
4-6
Satellite P20 Series Maintenance Manual
4.2 Battery
4 Replacement Procedures
4.2
Battery
Removing the Battery Pack To remove the battery pack from the 2nd module bay, follow the steps below. 1. 2. 3. Turn the computer upside down. Unlock the 2nd module bay lock. Slide the 2nd module bay latch to release it then pull the battery pack out from the bay.
Fig 4-1: Removing the battery pack NOTE: For environmental reasons, do not throw away a spent battery pack. Please return spent battery packs to Toshiba.
Satellite P20 Series Maintenance Manual
4-7
4 Replacement Procedures Installing the Battery Pack
4.2 Battery
To install the battery pack in the 2nd module bay, follow the steps below and refer to the figure in the preceding section. 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. 1. Slide the battery pack into the 2nd module bay. The 2nd module bay latch will click automatically and secure the battery pack in position. 2. Engage the 2nd module bay lock.
4-8
Satellite P20 Series Maintenance Manual
4.3 PC Card
4 Replacement Procedures
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 will pop out when you release it.
Fig 4-2: Pressing the eject button
Satellite P20 Series Maintenance Manual
4-9
4 Replacement Procedures 2. Push the eject button once more to pop the PC Card out slightly. 3. Grasp the PC Card and remove it.
4.3 PC Card
Fig 4-3: Removing the PC Card 4. Push the eject button back into place, if necessary.
4-10
Satellite P20 Series Maintenance Manual
4.3 PC Card Installing the PC Card
4 Replacement Procedures
To install the PC Card, follow the steps below and refer to the figures in the preceding section. 1. Make sure the two eject buttons do not stick out. 2. Insert the PC Card and press gently to ensure a firm connection.
Satellite P20 Series Maintenance Manual
4-11
4 Replacement Procedures
4.4 Removable modules
4.4
Removable modules
The Satellite P20 features two bays for the insertion of removable modules. The main module bay may house an optical drive, a second HDD or an FDD. The 2nd module bay is generally used for the removable battery, but it may also be used with a second Optical Media Drive or a TV tuner module. This section covers removal and installation of devices from the main module bay. For removal and installation of devices from the 2nd module bay, refer to Section 4.2, Battery. Disassembly and assembly procedures for the optical drive, TV tuner, removable HDD and FDD are given in later sections.
4-12
Satellite P20 Series Maintenance Manual
4.4 Removable modules Removing the Main Module To remove the main module, follow the steps below: 1. 2. 3. Turn the computer upside down. Unlock the main module bay lock.
4 Replacement Procedures
Slide the main module bay latch to release it then pull the main module out from the bay.
Fig 4-4: Removing the main module
Satellite P20 Series Maintenance Manual
4-13
4 Replacement Procedures Installing the Main Module
4.4 Removable modules
To install a device in the main module bay, follow the steps below and refer to the figure in the preceding section. 1. Slide the device into the main module bay. The main module bay latch will click automatically and secure the device in position. 2. Engage the main module bay latch lock.
4-14
Satellite P20 Series Maintenance Manual
4.5 Optical Drive
4 Replacement Procedures
4.5
Optical Drive
DVD-R/-RW device DVD-ROM device DVD Multi-drive device Combo device
The Satellite P20 may be fitted with a:
Disassembling the Optical Drive To disassemble the optical drive, first remove the drive from its module bay, then follow the steps below. 1. Remove three black M2×8 screws and one silver M2×4 screw securing the back bracket plate. Lift off the back bracket plate. 2. Remove four silver M2×4 screws (two from each side of the drive) securing the main bracket. Lift off the main bracket.
Fig 4-5: Removing the bracket screws
3. Pull the optical drive board from the rear of the drive.
Satellite P20 Series Maintenance Manual
4-15
4 Replacement Procedures Reassembling the Optical Drive
4.5 Optical Drive
To reassemble an optical drive, follow the steps below and refer to the figure in the preceding section. 1. Fit the optical drive board to the rear panel of the optical drive. 2. Place the drive in the main bracket and secure with four silver M2×4 screws (two from each side of the drive). 3. Position the back bracket plate and secure with three black M2×8 screws and one silver M2×4 screw.
4-16
Satellite P20 Series Maintenance Manual
4.6 TV Tuner
4 Replacement Procedures
4.6
TV Tuner
Disassembling the TV Tuner To disassemble the TV tuner, first remove the tuner from its module bay, then follow the steps below. 1. Remove seven M2×8 screws securing the TV tuner case. 2. Lift the lid off the TV tuner case and lift out the TV tuner board (if appropriate, detach the TV tuner transfer assembly FPC).
Fig 4-6: Removing the TV tuner case screws
Satellite P20 Series Maintenance Manual
4-17
4 Replacement Procedures Reassembling the TV Tuner
4.6 TV Tuner
To reassemble a TV tuner, follow the steps below and refer to the figure in the preceding section. 1. Position the TV tuner board in the TV tuner case and, if appropriate, attach the TV tuner transfer assembly FPC. 2. Secure the lid of the TV tuner case with seven M2×8 screws.
4-18
Satellite P20 Series Maintenance Manual
4.7 Removable HDD
4 Replacement Procedures
4.7
Removable HDD
Disassembling the Removable HDD To disassemble the removable HDD, first remove the drive from its module bay, then follow the steps below. 1. Release the lid latch of the removable HDD container and open the HDD container lid. 2. Ease the HDD out of the container.
Fig 4-7: Opening the removable HDD container
Satellite P20 Series Maintenance Manual
4-19
4 Replacement Procedures
4.7 Removable HDD
CAUTION: When handling the HDD, do not press the top surface as shown by the arrow. Hold it by the sides.
3. Remove the four M3×3 screws that secure the HDD case to the HDD. 4. Lift off the HDD case.
Fig 4-8: Removing the HDD case screws
4-20
Satellite P20 Series Maintenance Manual
4.7 Removable HDD
4 Replacement Procedures
5. Grasp the HDD and peel off the aluminum HDD shielding. 6. Gently pull the HDD connector off the HDD.
Satellite P20 Series Maintenance Manual
4-21
4 Replacement Procedures Reassembling the Removable HDD
4.7 Removable HDD
To reassemble the removable HDD, follow the steps below and refer to the figure in the preceding section. 1. Attach the HDD connector to the HDD. 2. Wrap the HDD in the aluminum HDD shielding ensuring that the circuit board face of the drive is covered by the black part of the shielding. The circuit board must not come into contact with the silver portion of the shielding. 3. Seat the HDD in the HDD case and secure with four M3×3 screws. 4. Slide the HDD into the HDD container. 5. Close the HDD container lid and lock it with the latch.
4-22
Satellite P20 Series Maintenance Manual
4.8 Removable FDD
4 Replacement Procedures
4.8
Removable FDD
Disassembling the Removable FDD To disassemble the removable FDD, first remove the drive from its module bay, then follow the steps below. 1. Remove two M2.5×4 screws from each side of the drive and three M2.5×4 screws securing the rear panel. 2. Lift off the FDD bracket.
Fig 4-9: Removing the FDD bracket screws 3. Release the FDD FPC and remove.
Satellite P20 Series Maintenance Manual
4-23
4 Replacement Procedures Reassembling the Removable FDD
4.8 Removable FDD
To reassemble a FDD, follow the steps below and refer to the figure in the preceding section. 1. Attach the FDD FPC. 2. Place the FDD in the FDD bracket and secure with two M2.5×4 screws on each side of the drive and three M2.5x4 screws on the rear panel.
4-24
Satellite P20 Series Maintenance Manual
4.9 Wireless LAN Unit
4 Replacement Procedures
4.9
Wireless LAN Unit
Removing the Wireless LAN Unit To remove the wireless LAN unit, first remove the battery pack then follow the steps below. 1. Turn the computer upside down and loosen two embedded screws securing the wireless LAN compartment cover. 2. Lift off the wireless LAN compartment cover.
Fig 4-10: Removing the wireless LAN compartment cover
Satellite P20 Series Maintenance Manual
4-25
4 Replacement Procedures 3. Detach the two ends of the wireless LAN antenna.
4.9 Wireless LAN Unit
4. Gently press out on the latches. One end of the wireless LAN unit will pop up. 5. Grasp the wireless LAN unit and pull it out.
Fig 4-11: Removing the wireless LAN unit CAUTION: Do not touch the connectors on the wireless LAN unit or on the computer. Debris on the connectors may cause malfunction.
4-26
Satellite P20 Series Maintenance Manual
4.9 Wireless LAN Unit
4 Replacement Procedures
Installing the Wireless LAN Unit To install the wireless LAN unit, follow the steps below and refer to the figures in the preceding section. 1. Turn the computer upside down and loosen two embedded screws securing the wireless LAN compartment cover. 2. Lift off the wireless LAN compartment cover. 3. Fit the wireless LAN unit's connectors into the computer's connectors and press carefully to ensure firm contact. CAUTION: Do not touch the connectors on the wireless LAN unit or on the computer. Debris on the connectors may cause malfunction. 4. Gently, push the wireless LAN unit down until the latches engage the unit to hold it in place. 5. Attach the ends of the wireless LAN antenna. The black antenna cable should be attached to the connector nearer the rear side of the computer, the white antenna cable to the connector closer to the front panel. 6. Seat the wireless LAN compartment cover and secure it with the two embedded screws.
Satellite P20 Series Maintenance Manual
4-27
4 Replacement Procedures
4.10 Expansion Memory
4.10 Expansion Memory
Removing the Expansion Memory To remove the expansion memory, first remove the battery pack, then follow the steps below. 1. Turn the computer upside down. 2. Remove two embedded screws securing the expansion memory cover. 3. Lift off the expansion memory cover.
Fig 4-12: Removing the expansion memory cover
4-28
Satellite P20 Series Maintenance Manual
4.10 Expansion Memory
4 Replacement Procedures
4. Gently press out on the latches. One end of the expansion memory will pop up. 5. Grasp the expansion memory and pull it out.
Fig 4-13: Removing the expansion memory CAUTION: Do not touch the connectors on the expansion memory or on the computer. Debris on the connectors may cause memory access problems.
Satellite P20 Series Maintenance Manual
4-29
4 Replacement Procedures Installing the Expansion Memory
4.10 Expansion Memory
To install the expansion memory, follow the steps below and refer to the figures in the preceding section. 1. Turn the computer upside down. 2. Remove the two embedded screws securing the expansion memory cover. 3. Lift off the expansion memory cover. 4. 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. 5. Gently, push the expansion memory down until latches on either side engage the expansion memory to hold it in place. 6. Seat the expansion memory cover in place and secure it with two embedded screws.
4-30
Satellite P20 Series Maintenance Manual
4.11 Modem / Bluetooth Unit
4 Replacement Procedures
4.11 Modem / Bluetooth Unit
Optional modem and Bluetooth units occupy the same connector so only one can be fitted at a time. The removal and installation procedures are the same for both. Removing the Modem / Bluetooth Unit To remove the installed modem or Bluetooth unit, first remove the battery pack, then follow the steps below. 1. Turn the computer upside down. 2. Remove two embedded screws securing the modem / Bluetooth unit cover. 3. Lift off the modem / Bluetooth unit cover.
Fig 4-14: Removing the modem / Bluetooth unit cover
Satellite P20 Series Maintenance Manual
4-31
4 Replacement Procedures
4.11 Modem / Bluetooth Unit
4. Remove two M2.5×3 screws securing the modem / Bluetooth unit.
Fig 4-15: Removing the modem / Bluetooth unit screws 5. Carefully lift the unit off its connector. 6. If a modem is being removed, disconnect its power cable from the system board. If a Bluetooth unit is being removed, disconnect its FPC cable from the system board.
4-32
Satellite P20 Series Maintenance Manual
4.11 Modem / Bluetooth Unit Installing the Modem / Bluetooth Unit
4 Replacement Procedures
To install a modem or Bluetooth unit, follow the steps below and refer to the figures in the preceding section. 1. Turn the computer upside down. 2. Remove two embedded screws securing the modem / Bluetooth unit cover. 3. Lift off the modem / Bluetooth unit cover. 4. If a modem is being fitted, connect the power cable. If a Bluetooth unit is being fitted, connect the FPC cable. 5. Fit the modem / Bluetooth unit onto its connector and secure with two M2.5×3 screws. 6. Replace the modem / Bluetooth unit cover and secure with two embedded screws.
Satellite P20 Series Maintenance Manual
4-33
4 Replacement Procedures
4.12 CPU
4.12 CPU
Removing the CPU To remove the CPU, first remove the battery pack, then follow the steps below. 1. Turn the computer upside down and remove five embedded security screws securing the CPU compartment cover. Remove the CPU compartment cover.
Fig 4-16: Removing the CPU compartment cover
4-34
Satellite P20 Series Maintenance Manual
4.12 CPU 2. Remove four screws securing the heat sink.
4 Replacement Procedures
3. Lift off the heat sink. In the event that the heat sink is stuck to the CPU, insert a small flathead screwdriver into the hole on the heat sink to gently lever it off).
Fig 4-17: Removing the heat sink CAUTION: If you remove the heat sink, you should use the CPU grease tool to remove the grease on the CPU and heat sink. Reapply fresh grease before replacing the heat sink.
Satellite P20 Series Maintenance Manual
4-35
4 Replacement Procedures
4.12 CPU
4. Turn the cam on the CPU socket with a flat-blade screwdriver so that the notch on the cam is aligned with the open side of the CPU socket to unlock the CPU.
Fig 4-18: Removing the CPU
5. Gently lift out the CPU.
4-36
Satellite P20 Series Maintenance Manual
4.12 CPU Installing the CPU
4 Replacement Procedures
To install the CPU, follow the steps below and refer to the figures in the preceding section.
CAUTION: If you remove the heat sink, you should use the CPU grease tool to remove the grease on the CPU and heat sink. Reapply fresh grease before installing the heat sink.
1. Make sure that the notch on the cam is aligned with the open position. 2. Seat the CPU to align the triangle mark on the CPU with the one on the CPU socket. Make sure the alignment is exact to avoid damaging pins on the CPU. 3. Press the CPU softly with your fingers and turn the cam on the CPU socket to the closed position with a flat-blade screwdriver to secure the CPU. 4. Seat the heat sink over the CPU and secure with four screws in the order indicated on the heat sink (1,2,3,4). 5. Secure the CPU compartment cover with the five embedded security screws.
Satellite P20 Series Maintenance Manual
4-37
4 Replacement Procedures
4.13 HDD
4.13 HDD
CAUTION: When handling the HDD, do not press the top surface as shown by the arrow. Hold it by the sides.
4-38
Satellite P20 Series Maintenance Manual
4.13 HDD
4 Replacement Procedures
Removing the HDD To remove the HDD, first remove the battery pack, then follow the steps below. 1. Turn the computer upside down. 2. Remove two M2.5×4 black screws securing the HDD and lift out the HDD unit.
Fig 4-19: Removing the HDD unit cover screws
NOTE: It is not necessary to remove the HDD case unless you are going to replace the HDD.
Satellite P20 Series Maintenance Manual
4-39
4 Replacement Procedures 3. Remove the four M3×3 screws that secure the HDD case to the HDD.
4.13 HDD
Fig 4-20: Removing the HDD unit case screws 4. Lift off the HDD case. 5. Grasp the HDD at the side and peel off the aluminum HDD shielding. 6. Gently pull the HDD connector off the HDD.
Fig 4-21: Removing the aluminum HDD shielding and connector
4-40
Satellite P20 Series Maintenance Manual
4.13 HDD
4 Replacement Procedures
Installing the HDD To install the HDD, follow the steps below and refer to the figures in the preceding section. 1. Slide the HDD connector firmly into place on the HDD, being careful not to damage the connector pins. 2. Wrap the HDD in the HDD shielding ensuring that the circuit board face of the drive is covered by the black part of the shielding. The circuit board must not come into contact with the silver portion. . 3. Seat the HDD in the HDD case and secure with four M3×3 screws. 4. Seat the HDD unit in the HDD slot and secure it with two M2.5×4 black screws.
Satellite P20 Series Maintenance Manual
4-41
4 Replacement Procedures
4.14 Keyboard
4.14 Keyboard
Removing the Keyboard To remove the keyboard, first remove the battery pack, then follow the steps below. 1. Open the display panel. 2. Insert a thin tool into each of the narrow holes in the strip cover and lever the strip cover up to release its latches.
Fig 4-22: Removing the strip cover
4-42
Satellite P20 Series Maintenance Manual
4.14 Keyboard
4 Replacement Procedures
3. Remove two M2.5×3 silver screws securing the keyboard. 4. Lift the keyboard out and place over the display hinges, revealing the keyboard cable. 5. Disconnect the keyboard cable and remove the keyboard.
Fig 4-23: Removing keyboard cable and keyboard
Satellite P20 Series Maintenance Manual
4-43
4 Replacement Procedures
4.14 Keyboard
Installing the Keyboard To install the keyboard, follow the steps below and refer to the figures in the preceding section. 1. Connect the keyboard cable to the system board. 2. Set the keyboard in place and secure it with two M2.5×3 silver screws. 3. Seat the strip cover and press down to ensure the strip cover latches engage, locking it in place.
4-44
Satellite P20 Series Maintenance Manual