Text preview for : a50.pdf part of Toshiba Satellite PSA50E Manual - Replacement Procedures
Back to : Toshiba Satellite A50.zip | Home
Chapter 4
Replacement Procedures
4 Replacement Procedures
4
4-ii Satellite A50/TECRA A2 Maintenance Manual (960-478)
4 Replacement Procedures
Chapter 4 Contents
4.1 Overview.................................................................................................................... 4-1
Safety Precautions................................................................................................ 4-2
Before You Begin ................................................................................................ 4-3
Disassembly Procedures ...................................................................................... 4-4
Assembly Procedures........................................................................................... 4-5
Tools and Equipment ........................................................................................... 4-5
Screw Tightening Torque .................................................................................... 4-6
Grip Color ............................................................................................................ 4-6
Screw Notation..................................................................................................... 4-7
4.2 Battery Pack/PC Card ................................................................................................ 4-8
4.2.1 Battery Pack ............................................................................................... 4-8
4.2.2 PC Card.................................................................................................... 4-10
4.3 Memory Module ...................................................................................................... 4-11
4.4 MDC Modem ........................................................................................................... 4-13
4.5 HDD......................................................................................................................... 4-15
4.6 Mini PCI Card.......................................................................................................... 4-18
4.7 Cooling Fin/CPU ..................................................................................................... 4-20
4.8 Keyboard.................................................................................................................. 4-25
4.9 Switch Board............................................................................................................ 4-29
4.10 Optical Drive............................................................................................................ 4-31
4.11 Display Assembly .................................................................................................... 4-33
4.12 Sound Board............................................................................................................. 4-37
4.13 Connector Board ...................................................................................................... 4-38
4.14 FAN.......................................................................................................................... 4-40
4.15 System Board/DC-IN Jack/RTC Battery ................................................................. 4-41
4.16 Battery Latch............................................................................................................ 4-44
4.17 Battery Lock............................................................................................................. 4-46
4.18 Touch Pad ............................................................................................................... 4-48
4.19 LCD Unit/FL Inverter .............................................................................................. 4-50
4.20 Latch Assembly ....................................................................................................... 4-56
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-iii
4 Replacement Procedures
4.21 Wireless LAN Antenna/Speaker/Hinge................................................................... 4-57
4.22 Fluorescent Lamp..................................................................................................... 4-66
4.22.1 Replacing the 14.1 Inch XGA (SPWG) CHIMEI Fluorescent Lamp...................... 4-67
4.22.2 Replacing the 14.1 Inch XGA (SPWG) Samsung Fluorescent Lamp .................... 4-73
4.22.3 Replacing the 15.0 Inch XGA Samsung Fluorescent Lamp ................................... 4-80
4.22.4 Replacing the 15.0 Inch XGA LG.Philips Fluorescent Lamp ................................. 4-89
4.22.5 Replacing the 15.0 Inch XGA Sharp Fluorescent Lamp ......................................... 4-96
4.22.6 Replacing the 15.0 Inch XGA (SPWG) CHIMEI Fluorescent Lamp.................... 4-113
4.22.7 Replacing the 15.0 Inch XGA (SPWG) AU Fluorescent Lamp ............................ 4-120
4.22.8 Replacing the 15.0 Inch XGA (SPWG) LG.Philips Fluorescent Lamp ................ 4-127
4.22.9 Replacing the 15.0 Inch XGA CSV/HCSV Sharp Fluorescent Lamp................... 4-144
4.22.10 Replacing the 15.0 Inch SXGA+ (SPWG) LG.Philips Fluorescent Lamp .......... 4-163
4-iv Satellite A50/TECRA A2 Maintenance Manual (960-478)
4 Replacement Procedures
Figures
Figure 4-1 Removing Battery Pack....................................................................................... 4-8
Figure 4-2 Removing PC Card ........................................................................................... 4-10
Figure 4-3 Removing Memory Slot Cover ......................................................................... 4-11
Figure 4-4 Removing Memory Module.............................................................................. 4-12
Figure 4-5 Removing MDC Modem................................................................................... 4-13
Figure 4-6 Removing HDD Slot Cover .............................................................................. 4-15
Figure 4-7 Removing HDD ASSY ..................................................................................... 4-16
Figure 4-8 Removing HDD ................................................................................................ 4-16
Figure 4-9 Removing Mini PCI Slot Cover........................................................................ 4-18
Figure 4-10 Removing Mini PCI Card ............................................................................... 4-19
Figure 4-11 Removing CPU Cover..................................................................................... 4-20
Figure 4-12 Removing CPU Holder ................................................................................... 4-21
Figure 4-13 Removing Cooling Fin.................................................................................... 4-22
Figure 4-14 Removing CPU ............................................................................................... 4-22
Figure 4-15 Installing CPU................................................................................................. 4-23
Figure 4-16 Applying Silicon Grease ................................................................................. 4-24
Figure 4-17 Removing Keyboard Holder ........................................................................... 4-25
Figure 4-18 Removing Keyboard ....................................................................................... 4-26
Figure 4-19 Removing Keyboard Support Plate.................................................................. 4-27
Figure 4-20 Removing Switch Board .................................................................................. 4-29
Figure 4-21 Removing DVD-RO M Drive (1) .................................................................... 4-31
Figure 4-22 Removing DVD-ROM Drive (2) ..................................................................... 4-32
Figure 4-23 Removing Display Assembly (1) .................................................................... 4-33
Figure 4-24 Removing Display Assembly (2) .................................................................... 4-34
Figure 4-25 Removing Display Assembly (3) .................................................................... 4-35
Figure 4-26 Removing Touch Pad...................................................................................... 4-39
Figure 4-27 Removing Sound Board .................................................................................. 4-37
Figure 4-28 Removing Harness Holder .............................................................................. 4-38
Figure 4-29 Removing Connector Board............................................................................ 4-39
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-v
4 Replacement Procedures
Figure 4-30 Removing Fan Module.................................................................................... 4-40
Figure 4-31 Removing System Board (1)........................................................................... 4-41
Figure 4-32 Removing System Board (2)........................................................................... 4-42
Figure 4-33 Removing SB Latch Button ............................................................................. 4-44
Figure 4-34 Removing Battery Lock L............................................................................... 4-44
Figure 4-35 Removing Battery Lock Button ....................................................................... 4-46
Figure 4-36 Removing Battery Lock R .............................................................................. 4-46
Figure 4-37 Removing Touch Pad ..................................................................................... 4-48
Figure 4-38 Removing Display Mask................................................................................. 4-50
Figure 4-39 Removing FL Inverter and LCD Unit............................................................. 4-51
Figure 4-40 Removing LCD Bracket.................................................................................. 4-52
Figure 4-41 Removing Aluminum Tape............................................................................. 4-52
Figure 4-42 Removing Latch Assembly ............................................................................. 4-56
Figure 4-43 Removing Wireless LAN Antennas................................................................ 4-57
Figure 4-44 Removing LCD Cable Holder.......................................................................... 4-58
Figure 4-45 Removing Display Cover................................................................................ 4-58
Figure 4-46 Removing Hinge Cap...................................................................................... 4-59
Figure 4-47 Removing Optical Drive Cover ....................................................................... 4-60
Figure 4-48 Removing Hinges (1) ...................................................................................... 4-61
Figure 4-49 Removing Speakers......................................................................................... 4-62
Figure 4-50 Removing Hinges (2) ...................................................................................... 4-63
Figure 4-51 to 4-56 Replacing 14.1 Inch XGA (SPWG) CHIMEI Fluorescent Lamp (1) to
(5) .............................................................................................................4-67 to 4-72
Figure 4-57 to 4-65 Replacing 14.1 Inch XGA (SPWG) Samsung Fluorescent Lamp (1) to
(8) .............................................................................................................4-73 to 4-79
Figure 4-66 to 4-74 Replacing 15.0 Inch XGA Samsung Fluorescent Lamp (1) to
(9) .............................................................................................................4-80 to 4-88
Figure 4-75 to 4-82 15.0 Inch XGA LG.Philips Fluorescent Lamp (1) to (8)........4-89 to 4-95
Figure 4-83 to 4-105 Replacing 15.0 Inch XGA Sharp Fluorescent Lamp (1) to (23)
................................................................................................................4-96 to 4-112
Figure 4-106 to 4-112 Replacing 15.0 Inch XGA (SPWG) CHIMEI Fluorescent Lamp (1) to
(7) .........................................................................................................4-113 to 4-119
Figure 4-113 to 4-120 Replacing 15.0 Inch XGA (SPWG) AU Fluorescent Lamp (1) to (8)
..............................................................................................................4-120 to 4-126
4-vi Satellite A50/TECRA A2 Maintenance Manual (960-478)
4 Replacement Procedures
Figure 4-121 to 4-143 Replacing 15.0 Inch XGA (SPWG) LG.Philips Fluorescent Lamp (1)
to (23) ...................................................................................................4-127 to 4-143
Figure 4-144 to 4-166 Replacing 15.0 Inch XGA CSV/HCSV Sharp Fluorescent Lamp (1) to
(23) .......................................................................................................4-144 to 4-162
Figure 4-167 to 4-174 15.0 Inch SXGA+ (SPWG) LG.Philips Fluorescent Lamp (1) to (8)
..............................................................................................................4-163 to 4-171
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-vii
4 Replacement Procedures
4-viii Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.1 Overview 4 Replacement Procedures
4
4.1 Overview
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. The numbers in the chart indicate the relevant section
numbers in this manual.
In all cases when removing an FRU, the battery pack must also be removed. When repairing
an FRU that is the potential cause of a computer fault, use the chart to determine the order in
which FRUs need to be removed.
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-1
4 Replacement Procedures 4.1 Overview
Safety Precautions
Please read the following safety instructions before disassembling the computer and always
follow the instructions while working on the computer.
Danger: 1. In the case of the battery, always use authentic parts or equivalent parts
approved by Toshiba. Other batteries may have different specifications that
are incompatible with the computer and may result in fire or explosion.
Due to the risk of alkali fluid leaks, never attempt to heat or disassemble the
battery. Similarly, due to the risk of explosion, never expose the battery to
flame.
2. Some parts including the power supply and FL inverter generate high
voltages. If you need to turn on the power while disassembling the computer,
do not touch any connectors or other components due to the risk of electric
shock. Also, do not disassemble individual parts when performing routine
maintenance.
Warning:1. To prevent electric shock, turn off the power unplug the AC adapter from the
power source.
2. As the battery installed to the computer is typically already charged, the risk
of electric shock remains even when the AC adapter is unplugged from the
socket. To prevent electric shock, always take off any metal jewelry or
accessories such as necklaces, bracelets or rings before working on the
computer. Never work with wet or moist hands.
3. Take care not to injury yourself on any edges or corners.
Caution:1. Confirm that replacement parts have compatible specifications before
replacing on the computer. Never use incorrect parts as these may cause
faults on the computer.
2. To prevent internal damage such as short circuits or burning, do not allow any
screws, paper clips, or other metal objects to fall into the computer. When
removing screws, always replace with the same size screw. Ensure that all
screws are fully tightened. Loose screws may result in short circuits leading to
overheating, smoke or flame.
3. To prevent electric shock, check that you have disconnected all cables from a
part before removing the part.
4. When connecting to the AC power supply, use only an AC adapter and cable
approved by Toshiba.
5. To prevent electric shock, ensure that all replacement parts are compatible
with the computer and that all cables and connectors are securely connected.
4-2 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.1 Overview 4 Replacement Procedures
Before You Begin
Take note of the following points before starting work. Always remove the AC adapter and
battery pack before commencing any of the procedures. The procedure for removing the
battery pack is described in section "4.2.1 Battery Pack".
1. Do not disassemble the computer unless it is operating abnormally.
2. Use the designated tools.
3. Ensure that the environment for working on and storing parts does not contain any of
the following.
Dust or dirt
Static electricity
Extremely hot, cold, or humid conditions
4. Perform the diagnostic tests described in Chapter 2 to determine which FRU is the
cause of the fault.
5. Do not perform any unnecessary work. Always work in accordance with the
disassembly and reassembly procedures in this manual.
6. Keep parts removed from the computer in a safe place away from the computer where
they will not be damaged or interfere with your work.
7. Disassembling requires the removal of a large number of screws. Keep removed
screws in a safe place such that you can determine which screws belong to which part.
8. When reassembling, ensure that you use the correct screws and fit parts in the correct
position. Screw sizes are noted in the text and figures.
9. As all parts have sharp edges and corners, take care not to cut yourself.
10. After replacing an FRU, check that the computer and replaced part operate correctly.
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-3
4 Replacement Procedures 4.1 Overview
Disassembly Procedures
Three main types of cable connector are used.
Pressure plate connector
Spring connector
Normal pin connector
When disconnecting a pressure plate connector, lift up the tag on one side of the plastic
pressure plate on the connector and pull the cable out from the connector. When reconnecting
a cable to a pressure plate connector, lift up the pressure plate to a suitable height and insert
the cable into the connector. Press down on both sides of the pressure plate such that both
sides of the plate and connector are at the same height and that the cable is fixed in the
correct position. Pull the cable to ensure that it is securely connected. If the cable is
disconnected from the connector, reconnect it making sure that you lift the pressure plate
high enough to insert fully the cable.
For spring connectors, lifting up the stopper frees the cable and allows 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.
Normal pin connectors are used for all other cables. Simply pull out or push in these
connectors to disconnect or reconnect.
4-4 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.1 Overview 4 Replacement Procedures
Assembly Procedure
After the computer has been disassembled and the part that caused the fault has been repaired
or replaced, the computer must be reassembled.
Take note of the following general points when assembling the computer.
Take your time and follow the instructions carefully. Hurrying the assembly work
will only introduce new problems.
Check that all cables and connectors are securely connected.
Before fastening FRUs or other parts in place, ensure that no cables are caught on
screws or the FRU.
Check that all latches are securely closed.
Ensure that you have installed all FRUs correctly and do not have any screws left
over. Using an incorrect screw may damage the thread or screw head and result
in the FRU not being securely fastened in place.
After installing FRUs, check that the computer operates correctly.
Tools and Equipment
For your safety and the safety of the people around you, it is important that you use
Electrostatic Discharge (ESD) equipment. Correctly utilizing of the equipment increases the
percentage of successful repairs and saves on the cost of damaged or destroyed parts. The
following equipment is required for disassembly and assembly.
One Philips screwdriver with type 0 bit (for THIN HEAD screws)
One Philips screwdriver with type 1 bit (for screws other than above)
Tweezers (for lifting screws)
ESD mats (lay on work table or floor)
An ESD wrist strap and heel grounder
Anti-static carpet or flooring
A pair of needle-nose pliers
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-5
4 Replacement Procedures 4.1 Overview
Screw Tightening Torque
Use the following torque when tightening screws.
CAUTION: Overtightening may damage screws or parts. Undertightening may allow
screws to loosen (and possibly fall out) causing a short circuit or other
damage.
NOTE: To tighten screws quickly and accurately, an electric screwdriver is
recommended.
M2 (2mm) 0.167 N·m (1.7 kgf·cm)
M2.5 (2.5mm) 0.294 N·m(3.0 kgf·cm)
M3 (3mm) 0.549 N·m(5.6 kgf·cm)
NOTE: To prevent damage to THIN HEAD screws, press along the axis of the
screwdriver while turning the screw. This is because the contact area between
the screw and driver is less than for a pan head screw (standard pan-shaped
screw head).
Grip Color
Some screws have a colored grip area to help you determine the length of the screw.
"Special length screw" means screws whose length is indicated in an integral number to the
first decimal places such as 2.5 mm, 2.8 mm and so on.
4-6 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.1 Overview 4 Replacement Procedures
Screw Notation
To make maintenance of the computer easier, markings of the kinds of the screws including
the types and lengths of the screws are indicated on the computer body.
Format:
Screw shape + Screw length (mm)
Screw shape
B: Bind screw
F: Thin head screw
S: Super thin head screw
T: Tapping screw
U: Other screws (Unique screws: pan head, stud, etc.)
Example: B6 ... 6mm bind screw
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-7
4 Replacement Procedures 4.2 Battery Pack/PC Card
4.2 Battery Pack/PC Card
4.2.1 Battery Pack
Removing the battery pack
The following describes the procedure for removing the battery pack (See Figure 4-1).
CAUTION: 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.
1. Turn off the power of the computer.
2. Disconnect the AC adapter and all other external devices from the computer.
3. Turn the computer upside down.
4. Slide the battery lock in the direction indicated by the arrow to unlock.
5. While sliding the battery latch towards the direction indicated by the arrow, pull out
the battery pack towards the direction indicated by corresponding arrow.
Battery Latch
Battery Pack Battery Lock
Figure 4-1 Removing Battery Pack
NOTE: For environmental reasons, do not throw away a spent battery pack. Collect the
spent battery packs.
4-8 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.2 Battery Pack/PC Card 4 Replacement Procedures
Installing the battery pack
The following describes the procedure for reinstalling the battery pack (See Figure 4-1).
CAUTION: There is a danger that the lithium ion battery pack may explode if not
fitted, operated, handled, or disposed correctly. Collect the spent battery
packs. Use only the batteries approved by Toshiba.
NOTE: Check visually the battery terminals and clean off any dirt with a dry cloth.
1. Turn off the power of the computer.
2. Disconnect the AC adapter and all other external devices from the computer.
3. Fit the connector of the battery pack to the computer's connector and push it until
click sounds.
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-9
4 Replacement Procedures 4.2 Battery Pack/PC Card
4.2.2 PC Card
Removing the PC card
The following describes the procedure for removing a PC card (See Figure 4-2).
CAUTION: Insert or remove the PC card in accordance with any instructions in the
PC card manual or the manuals of the computer system you are using.
1. Push the eject button. It will pop out when you release it. Then press the eject button
once more to eject the PC card.
2. Grasp the PC card and remove it.
PC Card
Eject Button
Figure 4-2 Removing PC Card
Installing the PC card
The following describes the procedure for inserting a PC card (See Figure 4-2).
1. Make sure the eject button does not stick out.
2. Insert the PC card and press it until it is securely connected.
4-10 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.3 Memory Module 4 Replacement Procedures
4.3 Memory Module
CAUTION: The power of the computer must be turned off when you remove the
memory module. Removing a memory module with the power on risks
damaging the module or the computer itself.
Do not touch the memory module terminals. Any dirt on the terminals may
cause memory access problems.
Never press hard or bend the memory module.
Removing the memory module
To remove a memory module, confirm that the computer is in boot mode. Then perform the
following procedure (See Figure 4-3, 4-4).
1. Turn the computer upside down.
2. Loosen the screw (with e-ring) securing the memory slot cover.
3. Remove the memory slot cover from the edge near the screw.
Memory Slot Cover
Screw with e-ring
Figure 4-3 Removing Memory Slot Cover
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-11
4 Replacement Procedures 4.3 Memory Module
4. Open the left and right latches and remove the memory module.
SLOT A: Standard Memory
Latch
Latch
Memory Module
SLOT B: Expansion Memory
Figure 4-4 Removing Memory Module
Installing the memory module
Before installing the memory module, confirm that the computer is in boot mode. Then
perform the following procedure (See Figure 4-3, 4-4).
1. Insert the memory module into the connector of the computer slantwise (terminal
side first) and press it to connect firmly.
CAUTION:The power must be turned off when you insert a memory module. Inserting a
memory module with the power on might damage the module or the computer
itself.
When installing only one memory module, install it SLOT A. Otherwise, it
might damage the module or the computer itself
Never press hard or bend the memory module.
2. Install the memory slot cover from the front side edge and secure it with the supplied
screw.
3. When the power of the computer is turned on, the computer checks automatically the
memory size. Confirm that the new memory is detected correctly.
4. If the memory is not detected, make sure it is connected surely.
4-12 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.4 MDC Modem 4 Replacement Procedures
4.4 MDC Modem
Removing the MDC Modem
The following describes the procedure for removing an MDC modem (See Figure 4-5).
CAUTION:Since the MDC slot cover is easily broken, remove the memory cover first
before removing the MDC slot cover.
When replacing the MDC mode, The power must be turned off when you
remove the MDC modem. Removing an MDC modem with the power on risks
damaging the modem or the computer itself.
1. Turn the computer upside down.
2. Loosen the screw (with e-ring) securing the MDC slot cover and remove the cover.
3. Remove the following screws fixing the MDC modem.
· M2x4Z BIND screw x2
4. Lift up the MDC modem to remove it from the connector on the system board.
5. Remove the MDC cable from the connector on the MDC modem.
Screw with e-ring
MDC Slot Cover
M2x4Z BIND
MDC Cable
PJ3020
MDC Modem
Figure 4-5 Removing MDC Modem
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-13
4 Replacement Procedures 4.4 MDC Modem
Installing the MDC Modem
The following describes the procedure for installing an MDC modem (See Figure 4-5).
1. Connect the MDC cable to the connector JP1 on the MDC modem.
2. Set the MDC modem on the slot and connect the MDC modem to the connector
PJ3020 on the system board by pressing it from the top.
3. Fix the MDC modem using the following screws.
· M2x4Z BIND screw x2
4. Install the MDC slot cover and secure it with the supplied screw.
4-14 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.5 HDD 4 Replacement Procedures
4.5 HDD
Removing the HDD
The following describes the procedure for removing an HDD (See Figure 4-6 to 4-8).
CAUTION: Take care not to press on the top or bottom of the HDD. Pressure may
cause data loss or damage to the device.
1. Turn the computer upside down.
2. Remove the following screw fixing the HDD slot cover and raise the cover to
remove.
· M2.5x6B THIN BIND screw x1
HDD Slot Cover
M2.5x6B THIN BIND
Figure 4-6 Removing HDD Slot Cover
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-15
4 Replacement Procedures 4.5 HDD
3. Pull horizontally the HDD ASSY to disconnect it from the connector and lift up to
remove.
HDD ASSY
HDD slot
Figure 4-7 Removing HDD ASSY
4. Remove the following screws fixing the HDD.
· M3x4S THIN BIND screw x4
5. Remove the HDD holder from the HDD.
M3x4S THIN BIND
HDD Holder
M3x4S THIN BIND
HDD
Figure 4-8 Removing HDD
4-16 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.5 HDD 4 Replacement Procedures
Installing the HDD
The following describes the procedure for installing an HDD (See Figure 4-6 to 4-8).
1. Install the HDD holder to the HDD with the following screws.
· M3x4S THIN BIND screw x4
2. Put the HDD ASSY into the HDD slot and connect it to the connector.
3. Install the HDD slot cover and secure it by using the following screws.
· M2.5x6B THIN BIND screw x1
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-17
4 Replacement Procedures 4.6 Mini PCI Card
4.6 Mini PCI Card
CAUTION: The power must be turned off when you remove a mini PCI card.
Removing a mini PCI card with the power on risks damaging the card or the
computer itself.
Never press hard or bend the mini PCI card.
Removing the Mini PCI card
The following describes the procedure for removing the mini PCI card (See Figure 4-9, 4-10).
1. Turn the computer upside down.
2. Remove the following screw fixing the mini PCI slot cover and remove the cover.
· M2x4B BIND or LH STICK x1
M2x4B BIND or LH STICK
Mini PCI Slot Cover
Figure 4-9 Removing Mini PCI Slot Cover
3. Disconnect two wireless LAN cables from JP1 and JP2 on the mini PCI card.
4. Remove two glass tapes and remove the cables from the guide.
5. Open the left and right latches holding the mini PCI card and remove the mini PCI
card.
4-18 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.6 Mini PCI Card 4 Replacement Procedures
Glass Tape
Wireless LAN Antenna Cable
Latches
Mini PCI Card
Figure 4-10 Removing Mini PCI Card
Installing the Mini PCI card
The following describes the procedure for installing a mini PCI card (See Figure 4-9, 4-10).
1. Insert the mini PCI card terminals at 45-degree slant into the connector on the
computer and press the mini PCI card from the top to secure.
2. Pass the black and white wireless LAN cables along the guide and secure them with
two glass tapes. Connect the wireless LAN cables to the J1 and J2 terminals
respectively on the mini PCI card.
3. Attach the mini PCI slot cover and secure it with the following screw.
· M2x4B BIND or LH STICK x1
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-19
4 Replacement Procedures 4.7 Cooling Fin/CPU
4.7 Cooling Fin/CPU
Removing the Cooling fin/CPU
The following describes the procedure for removing the cooling fin/CPU (See Figure 4-11 to
4-14).
1. Remove the following screws fixing the CPU cover and remove the CPU cover.
· M2.5x14B THIN BIND screw x1
· M2.5x18B THIN BIND screw x1
M2.5x18B THIN BIND
M2.5x14B THIN BIND
CPU Cover
Figure 4-11 Removing CPU Cover
4-20 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.7 Cooling Fin/CPU 4 Replacement Procedures
2. Remove the following screws securing the CPU holder on the CPU.
· M2x4B BIND screw x3
M2x4B BIND
CPU Holder
Figure 4-12 Removing CPU Holder
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-21
4 Replacement Procedures 4.7 Cooling Fin/CPU
3. Lift up the cooling fin and remove it.
Cooling Fin
Figure 4-13 Removing Cooling Fin
4. Unlock the CPU by rotating counterclockwise the cam on the CPU socket by 90
degrees with a flat-blade screwdriver (in the order shown in the figure below).
5. Remove the CPU.
Opened Closed
Figure 4-14 Removing CPU
4-22 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.7 Cooling Fin/CPU 4 Replacement Procedures
Installing the Cooling fin/CPU
The following describes the procedure for installing the cooling fin/CPU (See Figure 4-11 to
4-16).
1. Check that the mark on the cam is in the unlocking position.
2. Attach the CPU to the correct position in the CPU socket.
CAUTION: Place the CPU in such direction as shown below. (Pay attention to the
position of the triangle mark on the CPU.)
Triangle mark
Figure 4-15 Installing CPU
3. Fix the CPU by rotating clockwise the cam by 90 degrees with a flat-blade
screwdriver.
4. If there is already silicon grease on the CPU and cooling fin, clean it with a cloth.
Using a special applicator, apply quarter of scale (0.25ml) of silicon grease evenly on
the CPU chip.
NOTE: If silicon grease has already been applied to the CPU or cooling fin, wipe clean
with a cloth and apply new silicon grease. The computer will not operate correctly if the
CPU is not firmly in contact with the cooling fin.
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-23
4 Replacement Procedures 4.7 Cooling Fin/CPU
NOTE: Apply the silicon grease enough to cover the chip surface using the special
applicator. When installing the cooling fin, make sure the bottom of the fin covers the top
of CPU.
CPU Chip
Figure 4-16 Applying Silicon Grease
5. Install the cooling fin.
6. Place the CPU holder on the cooling fin with its holes (small and large) fitted to the
bosses of the cooling fin. Fix the CPU holder with following screws in the order of
the marks (1 to 3) on the CPU holder.
· M2x4B BIND screw x3
7. Install the CPU cover from the front side and secure it with the following screws.
· M2.5x18B THIN BIND screw x1
· M2.5x14B THIN BIND screw x1
4-24 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.8 Keyboard 4 Replacement Procedures
4.8 Keyboard
Removing the Keyboard
The following describes the procedure for removing the keyboard (See Figure 4-17 to 4-19).
CAUTION: As the keytop may fall out, when handling the keyboard always hold it by
the frame and do not touch the keytop.
1. Open the display.
2. Hold the both ends of the keyboard holder and lift it up to remove.
CAUTION: When removing the keyboard holder, be careful not to touch the metal
parts of the speakers under it.
Keyboard Holder
Figure 4-17 Removing Keyboard Holder
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-25
4 Replacement Procedures 4.8 Keyboard
3. Remove the following screws holding the keyboard.
· M2.5×2.8B THIN BIND screw x2
4. Remove the following screw fixing the keyboard hold plate and remove the
keyboard hold plate by pulling it to the right side.
· M2.5×2.8B THIN BIND screw x1
5. Lift the upper side of the keyboard out and bring it a little to the display. Then turn it
face down on the palm rest.
M2.5x2.8B THIN BIND
Keyboard Hold Plate
Figure 4-18 Removing Keyboard
4-26 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.8 Keyboard 4 Replacement Procedures
6. Remove the following screw fixing the keyboard support plate underneath the
keyboard.
· M2.5x8B THIN BIND screw x2
7. Remove the keyboard support plate. M2.5x8B THIN BIND
Keyboard Support Plate
Keyboard Flexible Cable
PJ3230
Keyboard
Figure 4-19 Removing Keyboard Support Plate
8. Unlock the connector and remove the keyboard flexible cable from the connector of
the system board.
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-27
4 Replacement Procedures 4.8 Keyboard
Installing the Keyboard
The following describes the procedure for installing the keyboard (See Figure 4-17 to 4-19).
1. Place the keyboard on the palm rest as its face is down. Connect the keyboard flexible
cable to the connector PJ3230 on the system board.
2. Install the keyboard support plate on the keyboard flexible cable from the front side
part and secure it with the following screws.
· M2.5x8B THIN BIND screw x2
3. Turn the keyboard face up while inserting the bottom edge of the keyboard under the
chassis. Then put it on the computer. Make sure that there is no gap between the
keyboard and the computer chassis.
4. Insert the left side of the keyboard hold plate into the slot of the chassis. Set the plate
with its hole fitted to the guide pin on the chassis. Secure the keyboard hold plate with
the following screw. When installing, make sure the keyboard hold plate holds the
center tab of the keyboard.
· M2.5x2.8B THIN BIND screw x1
5. Secure the keyboard with the following screws.
· M2.5x2.8B THIN BIND screw x2
6. Install the keyboard holder by pressing it from the top side.
4-28 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.9 Switch Board 4 Replacement Procedures
4.9 Switch Board
Removing the Switch board
The following describes the procedure for removing the switch board (See Figure 4-20).
1. Open the display and unlock the connector. Disconnect the switch board cable from
the connector on the system board.
2. Remove the following screw securing the switch board.
· M2.5x2.8B THIN BIND screw x1
3. Slide the switch board to the left and remove it.
M2.5x2.8B THIN BIND Switch Board
PJ3280
Switch Board Cable
PJ3200
Figure 4-20 Removing Switch Board
4. Unlock the connector and disconnect the switch board cable from the switch board.
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-29
4 Replacement Procedures 4.9 Switch Board
Installing the Switch board
The following describes the procedure for installing the switch board (See Figure 4-20).
1. Connect the switch board cable to the connector PJ3280 on the switch board.
2. Place the switch board to the left side of the installation position and slide it to the
right to install. Then fix it with the following screw.
· M2.5x2.8B THIN BIND screw x1
3. Connect the switch board cable to the connector PJ3200 on the system board.
4-30 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.10 Optical Drive 4 Replacement Procedures
4
4.10 Optical Drive
This section describes how to remove and install a DVD-ROM drive as an example. The
procedure for a CD-ROM, DVD-ROM & CD-R/RW, DVD-R/-RW or DVD Super Multi
drive is the same.
NOTE: Do not apply excessive force to the top of an optical drive.
Removing the Optical drive
The following describes the procedure for removing the optical drive (See Figure 4-21, 4-22).
1. Turn the computer face down and remove the following screw securing the DVD-
ROM drive assembly.
· M2.5x6B THIN BIND screw x1
2. Pull out the DVD-ROM drive assembly in the direction indicated by arrow to remove.
M2.5x6B THIN BIND
Optical Drive
(DVD-ROM Drive Assembly)
Figure 4-21 Removing DVD-ROM Drive (1)
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-31
4 Replacement Procedures 4.10 Optical Drive
3. Remove the following screws fixing the rear bracket from the DVD-ROM drive
assembly.
· M2x2.7 STEP screw x2
4. Remove the following screw fixing the side bracket and remove the side bracket.
· M2x3S SUPER THIN BIND screw x1
DVD-ROM Drive Assembly
Side Bracket
Rear Bracket
M2x3S SUPER THIN BIND M2x2.7 STEP
Figure 4-22 Removing DVD-ROM Drive (2)
Installing the Optical drive
The following describes the procedure for installing the optical drive (See Figure 4-21, 4-22).
1. Install the side bracket on the DVD-ROM drive and fix it with the following screw.
· M2x3S SUPER THIN BIND screw x1
2. Place the rear bracket on the DVD-ROM drive and fix it with the following screws.
· M2x2.7 STEP screw x2
3. Insert the DVD-ROM drive assembly into the slot to connect it to the connector
PJ1810 on the system board.
4. Secure the DVD-ROM drive assembly with the following screw from the bottom of
the computer.
· M2.5x6B THIN BIND screw x1
4-32 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.11 Display Assembly 4 Replacement Procedures
4.11 Display Assembly
Removing the Display assembly
The following describes the procedure for removing the display assembly (See Figure 4-23 to
4-25).
1. Close the display and turn the computer face down.
2. Remove the following screws from the bottom of the computer.
· M2.5x6B THIN BIND screw x9 ("6" in the figure)
· M2.5x14B THIN BIND screw x5 ("14" in the figure)
· M2.5x18B THIN BIND screw x1 ("18" in the figure)
14
6 6
14
14 6
6
14
18 6
6
6
14 6
6
Figure 4-23 Removing Display Assembly (1)
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-33
4 Replacement Procedures 4.11 Display Assembly
3. Turn the computer face up. Open the display and disconnect the LCD cable and the
speaker cables (Blue, Red) from the connectors on the system board. Unlock the
connector and disconnect the touch pad cable from the system board.
4. Remove the following screws securing the display assembly.
· M2x8B BIND screw x1
· M2.5x8B THIN BIND screw x1
M2x8B BIND
M2.5x8B THIN BIND
PJ5600
Right Speaker Cable (Red)
LCD Cable
PJ6000
PJ3260
PJ6001
Touch Pad Cable
Left Speaker Cable (Blue)
Figure 4-24 Removing Display Assembly (2)
4-34 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.11 Display Assembly 4 Replacement Procedures
5. (For wireless LAN models only)
Pull out the wireless LAN cables from the slot near the center of the base assembly.
NOTE: (For wireless LAN models only) When removing the display assembly, be careful
not to cut or scratch the wireless LAN cables.
6. Unhook the latches between the display assembly and the base assembly. Lift the
display assembly up and remove it from the base assembly.
Display Assembly
Base Assembly
Figure 4-25 Removing Display Assembly (3)
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-35
4 Replacement Procedures 4.11 Display Assembly
Installing the Display assembly
The following describes the procedure for installing the display assembly (See Figure 4-23 to
4-25).
1. (For wireless LAN models only)
Pass the wireless LAN cables through the slot near the center of the base assembly.
2. Install the display assembly on the base assembly from the rear of the computer and
secure them with the following screws.
· M2x8B BIND screw x1
· M2.5x8B THIN BIND screw x1
3. Close the display and turn the computer face down. Secure the base assembly with
the following screws from the bottom.
· M2.5x6B THIN BIND screw x9 ("6" in the figure)
· M2.5x14B THIN BIND screw x5 ("14" in the figure)
· M2.5x18B THIN BIND screw x1 ("18" in the figure)
4. Turn the computer face up and open the display.
5. Connect the LCD cable, speaker cables (blue, red), touch pad cable to connectors
PJ5600, PJ6001, PJ6000, PJ3260 on the system board respectively.
4-36 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.12 Sound Board 4 Replacement Procedures
4.12 Sound Board
Removing the Sound Board
The following describes the procedure for removing the sound board (See Figure 4-26).
1. Unlock the connector and disconnect the sound board cable from the connector of
the system board.
2. Remove the following screw to remove the sound board.
· M2.5x4B THIN BIND screw x1
Sound Board
M2.5x4B THIN BIND
PJ9510
Sound Board Cable
PJ9500
System Board
Figure 4-26 Removing Sound Board
3. Unlock the connector and disconnect the sound board cable from the connector on the
sound board.
Installing the Sound Board
The following describes the procedure for installing the sound board (See Figure 4-26).
1. Connect the sound board cable to the connector PJ9510 on the sound board.
2. Install the sound board from the side with the volume on the base assembly and
secure with the following screw.
· M2.5x4B THIN BIND screw x1
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-37
4 Replacement Procedures 4.12 Sound Board
3. Connect the sound board cable to the connector PJ9500 on the system board.
4-38 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.13 Connector Board 4 Replacement Procedures
4.13 Connector Board
This section describes how to remove and install a connector board with drawings of the
board with parallel port (parallel port type) as an example. The procedure for a connector
board with TV jack is the same.
Removing the Connector Board
The following describes the procedure for removing the Connector Board (See Figure 4-27,
4-28).
1. Remove the DC-IN jack from the slot of the base assembly.
2. Remove the following screws to remove the harness holder.
· M2.5x4B THIN BIND screw x2
M2.5x4B THIN BIND DC-IN Jack
Harness Holder
Figure 4-27 Removing Harness Holder
3. Disconnect the USB I/F cable and connector board cable after unlock from the
connector on the system board.
4. Remove the following screws to remove the connector board.
· M2x2.8S THIN BIND screw x1
5. Remove the connector board by lifting it.
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-39
4 Replacement Procedures 4.13 Connector Board
M2.5x2.8S THIN BIND
Connector Board
PJ3502 or PJ5640
PJ4610
USB I/F Cable
Core
DC-IN Cable
Connector Board Cable
Figure 4-28 Removing Connector Board
Installing the Connector Board
The following describes the procedure for installing the connector board (See Figure 4-27, 4-
28).
1. Install the connector board from the side with I/O port on the base assembly and
secure it with the following screws.
· M2x2.8S THIN BIND screw x1
2. Connect the connector board cable to the connector PJ3502 (parallel port type) or
PJ5640 (TV jack type) of the connector board.
3. Pass the DC-IN cable along the bosses near rear and USB I/F cable along the bosses
of the front side. Connector the USB I/F cable to the connector PJ4610 (Parallel
port type, TV jack type) on the connector on the connector board.
4. Install the harness holder and secure it with the following screws.
· M2.5x4B THIN BIND screw x2
5. Set the core of the DC-IN cable on the harness holder and install the DC-IN jack in
the slot of the base assembly.
4-40 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.14 Fan 4 Replacement Procedures
4.14 Fan
Removing the Fan
The following describes the procedure for removing the fan (See Figure 4-29).
1. Disconnect the fan cable from the connector on the system board.
2. Remove the following screws and remove the fan module by raising it up.
· M2.5x4B THIN BIND screw x2
M2.5x4B THIN BIND
PJ8770
Fan Module
Figure 4-29 Removing Fan Module
Installing the Fan
The following describes the procedure for installing the fan (See Figure 4-29).
1. Connect the fan cable to the connector PJ8770 on the system board.
2. Install the fan on the base assembly and secure it with the following screws.
· M2.5x4B THIN BIND screw x2
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-41
4 Replacement Procedures 4.15 System Board/DC-IN Jack/RTC Battery
4.15 System Board/DC-IN Jack/RTC Battery
CAUTION: When handling the system board, always hold by the edges. Do not touch the
printed circuit face.
After replacing the system board with a new one, set the DMI information as
described in section 3.4 "System test". Also update with the latest BIOS as
described in Appendix G "BIOS/KBC/EC Update".
After replacing the system board, the DMI information must be updated.
Removing the system board/DC-IN jack/RTC battery
The following describes the procedure for removing the system board/DC-IN jack/RTC
battery (See Figure 4-30, 4-31).
1. Open insulators bundle the LAN cable, MODEM cable and RTC battery cable.
MODEM Jack Insulator
LAN Jack
RTC Battery Case
Figure 4-30 Removing System Board (1)
4-42 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.15 System Board/DC-IN Jack/RTC Battery 4 Replacement Procedures
2. Take out the RTC battery from the RTC battery case.
3. Push a little the LAN jack and MODEM jack from the outside and raise them to
remove from the base assembly.
4. Remove the following screws securing the system board to the base assembly.
· M2.5x4B THIN BIND screw x2
5. Unlock the connector and disconnect the connector board cable from the system
board.
6. Remove the system board from the edge next to the optical drive position from the
base assembly.
7. Disconnect the DC-IN jack cable and USB I/F cable from the back of the system
board.
8. Disconnect the RTC battery cable from the connector on the system board. Peel off
two glass tapes and disconnect the MODEM cable and the LAN cable.
PJ4100
DC-IN Jack Cable
PJ8800
Connector Board Cable
M2.5x4B
PJ3021 PJ3502
THIN BIND PJ5640 M2.5x4B
PJ8490
THIN BIND
LAN Jack
Modem Jack
RTC Battery
USB I/F Cable
System Board
PJ4610
Figure 4-31 Removing System Board (2)
Satellite A50/TECRA A2 Maintenance Manual (960-478) 4-43
4 Replacement Procedures 4.15 System Board/DC-IN Jack/RTC Battery
Installing the System board/DC-IN jack/RTC battery
The following describes the procedure for installing the system board/DC-IN jack/RTC
battery (See Figure 4-30, 4-31).
1. Connect the MODEM cable to the connector PJ3021 and the LAN cable to PJ4100
on the back of the system board and secure them with two glass tapes.
2. Connect the RTC battery cable to the connector PJ8490 on the system board.
3. Connect the connector board cable to the connector PJ3502 (parallel port type) or
PJ5640 (TV jack type) on the system board.
4. Connect the DC-IN jack cable to the connector PJ8800 and the USB I/F cable to
PJ4610 on the back of the system board.
5. Set the system board on the base assembly from the side with CRT connector.
6. Wrap the RTC battery with the RTC battery case and set it in the slot on the base
assembly.
7. Install the MODEM jack and LAN jack on the base assembly and secure the core of
the LAN cable with the insulator. Bundle the MODEM cable, LAN cable and RTC
battery cable with the insulator attached on the base assembly.
8. Secure the system board with the following screws.
· M2.5x4B THIN BIND screw x2
4-44 Satellite A50/TECRA A2 Maintenance Manual (960-478)
4.16 Battery Latch