Toshiba Satellite L450 L450d Pro Maintanance Manual

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CAUTION: 
1.  Before replacing a component, make sure that the replacement component m\
eets the 
required specifications. To avoid laptop failures, never use components \
that do not meet 
the specifications. 
2.  To avoid internal damage such as short circuits and fire, never drop met\
al objects such 
as screws, pins, paper clips, etc. into the components. When a screw is \
removed, be sure 
to replace a screw that is the same size as the original screw. Make sur\
e that all the 
screws are fastened securely. Loose screws can cause short circuits, ove\
rheating, 
smoke, or fire. 
3.  Before raising a FRU or other component, make sure that all the componen\
t cables 
have been disconnected to avoid the risk of electrical shock caused by a\
ccidental 
contact with the energized components. 
4. For AC input, be sure to use the AC adapter and AC power cable that come\
 with your 
laptop or Toshiba-recommended equivalents. 
5. To avoid the risk of electrical shock, make sure that all the replacemen\
t components 
meet the specifications of the laptop and that all the cables and connec\
tors are fastened 
securely. 
6. Inside the PC are components that become hot during operation (such as \
the CPU and 
cooling module). To avoid burns, let the hot components cool down before starting 
inspection or repair task. 
  
						

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Before You Begin 
Before you begin to disassemble the laptop, keep in mind the precautions and advice in this 
section. Always begin disassembly by removing the AC adapter and battery pack. Remove the 
optional parts and accessories as well. The procedures for removing the batteries will be 
explained later. 
Disassemble the laptop only when an abnormality has occurred. 
Use only the recommended tools. 
To run and store the laptop, be sure to prepare a working environment that is free from: 
 Dust and contaminants 
  Static electricity 
  Extremely high or low temperatures and extremely high humidity 
Run the diagnostic tests explained in Chapter 2 of this manual to identify the FRU that has 
probably caused the system failure. 
Perform only the required machine operations. Use only the disassembly and reinstallation 
procedures described in this manual.  
Place the removed components in a safe place away from the laptop so that they are not damaged 
or get in the way of you doing your work. 
Normally, a number of screws need to be removed or replaced during disassembling. Place the 
removed screws in a safe place so that you can easily find the right screws\
 for the right 
components.  
When assembling the laptop, use the specified screws to fasten the parts to the spe\
cified 
locations. See the appropriate explanations and figures for screw sizes.\
  
To avoid personal injury, use care to handle components that have sharp edges or corners.  
After you have replaced a FRU, check that the FRU works correctly to ens\
ure normal laptop 
operation.  
						

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Disassembly Procedures 
The cable connectors come in these two basic types: 
 Pressure plate connectors 
  Normal pin connectors 
To remove a pressure plate connector, pull up the tabs on either side of the c\
onnectors plastic 
pressure plate and gently pull the cable out of the connector. To reconn\
ect the cable to the 
pressure plates connector, raise the pressure plate up to a satisfactory height and sl\
ide the cable 
into the connector. Secure the cable in the correct position by pressing\
 down the sides of the 
pressure plate so that the plate is flush with the sides of the connecto\
r. Grasp and pull the cable 
gently to check that the cable is connected firmly. If the cable came off the connector, reinsert 
the cable by raising the pressure plate up to a satisfactory height.  
Normal pin connectors are used for all the other types of cables. These conn\
ectors can be 
installed or removed by simply inserting them or pulling them out. 
 
Assembly Procedures 
You have to reassemble the laptop after you have disassembled the laptop and fixed the 
component that caused the problem. 
When reassembling the laptop, keep the following general guidelines in mind:   Take your time to carry out the suggested instructions completely. Hurried reassembly 
can often cause problems.  
  Check that all the cable and connectors are fastened securely. 
  Before securing the FRUs or other parts, check that the cables are not c\
aught by the 
screws or FRUs.  
  Check that all the latches are closed securely.  
  Check that all the required screws are used to secure the FRUs. Using wr\
ong screws can 
damage the threads or heads of the screws or does not ensure that the FRUs \
are secure.  
 
After installing a FRU, make sure that the FRU and laptop work normally.   
						

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Tools and Equipment 
For your safety and that of other people in the working environment, it is strongly recommended 
that you use electrostatic discharge (ESD) equipment. The proper use of this equipment will 
ensure successful repair work and reduce the costs for repairing damaged components. The 
equipment and tools required for disassembly and reassembly are: 
 One 2 mm Phillips screwdriver 
  One 4 mm flat-blade screwdriver 
  Torx screwdriver 
  Tweezers (for pulling out screws) 
  ESD mats (for the floor and work desks) 
  An ESD wrist strap or heel grounder 
  Anti-static carpets or flooring 
  Air ionizers (for highly electrostatic sensitive areas) 
  A plastic card (in credit card size) 
 
Screw Tightening Torque 
To secure screws, follow the torque values listed below. Over tightening\
 can damage 
components and screws. Under tightening can loosen the screw or cause screw\
s to come off, 
which may result in short circuits or other damage.  
 M2 (2 mm)  0.22 N ･m (2.2 kgf･cm) 
  M2.5 (2.5 mm)  0.36 N･m (3.5 kgf ･cm) 
  M3 (3 mm)  0.51 N･m (5.0 kgf ･cm) 
  M2.5x4 PSP TITE screws  0.204 N ･m (2.0 kgf･cm)  
  M2.5x6 GIZA TITE screws  0.36 N ･m (3.5 kgf･cm)  
  
						

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Colors of Screw Shanks 
For easy identification of the correct screws, the screw shanks are colo\
red according to their 
lengths, as follows: 
 Screws of an odd-numbered length  White 
  Screws of a special length  Black 
Screws of a special length are those of a length having decimal places (i.e. 16mm).  
 
Symbols of Screws on the Laptop Body 
For easy maintenance, the screw types are shown on the laptop body as symbols. A symbol 
consists of a letter representing the screw type and a numeral representing the screw length. 
 Screw type  Letter  
  Bind screw  B  (stands for bind) 
  Flat-head screw  F  (stands for flat-head) 
  Super flat-head screw  S  (stands for super flat-head) 
  Tapping screw  T  (stands for tapping) 
  Other screws   U  (stands for unique-pan head screws, studs, etc.) 
 
Symbol examples 
 6 mm bind screw  B6 
  12 mm bind screw  B12 
  5 mm stud  U5  
(The numeral represents the rounded length of the threaded portion regardless of\
 the 
entire stud length.) 
  
						

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4.2  Battery 
Removing the Battery Pack 
Remove the battery pack according to the following procedures and Figure 4.\
1.  
CAUTION:  When handling the battery packs, use care not to short circuit the term\
inals. Do 
not drop, hit, twist, or bend the battery packs. Do not scratch or break\
 up their casing. 
1. Turn the laptop upside down so that the bottom is facing you. 
2.  Slide out the battery lock. 
3.  Slide the battery release latch and remove the battery pack from the laptop. 
 
Figure 4.1 Removing the Battery Pack 
NOTE:  Dispose of the used battery packs as required by local ordinances or re\
gulations. 
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Installing the Battery Pack 
Install the battery pack according to the following procedures.  
CAUTION:  The battery packs contain a lithium ion battery, which can explode due \
to 
improper replacement, use, handling, or disposal. Always dispose of the \
battery packs as 
required by local ordinances or regulations. Use only replacement batter\
ies recommended by 
Toshiba. 
 
NOTE:  Visually check the batterys terminals. If they are dirty, clean them w\
ith a dry cloth. 
 
1. Gently insert a new or recharged battery pack into place. Check that the\
 battery release 
latch slides in and stops with a click. 
2.  Slide in the battery lock.  
						

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4.3  HDD 
Removing the HDD  
CAUTION:  Do not press on the top or bottom of the drive.  
Applying such pressure can either corrupt the data in the drive  
or damage the drive. 
 
There is one HDD equipped in the laptop. Remove the HDD (hard disk drive) according to the 
following procedures and Figure 4.2, 4.3. 
1. To remove the HDD, remove two M2.5x6 HDD door screws that secure the HDD and 
then remove the HDD door. 
  M2.5×6*2 
 
Figure 4.2 Removing the HDD door 
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2. Remove the HDD pack by pulling on the tab attached to the pack. 
NOTE:  Do not disassemble the HDD pack when it is working normally. Disassembl\
e or 
replace the HDD pack only if it fails. 
3. Place the HDD pack on a flat surface such as a desk. 
4.  To separate the plate from the HDD, remove four M3x3 screws according to the number 
sequence sealed on the HDD plate.  
1
2
3
4
 
M3×3*4 
Figure 4.3 Removing the HDD plate 
 
CAUTION:  Do not apply pressure to the top or bottom of the drive. 
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Installing the HDD 
Install the HDD according to the following procedures. 
CAUTION:  To avoid damage, always hold the HDD only by its sides. 
1. Place the HDD into the HDD plate. 
2.  Secure the HDD and its plate with four M3x3 screws. 
CAUTION:  To prevent the HDD plate from being distorted when installing the HDD p\
ack 
into the laptop, do not press the center of the HDD pack. Always hold th\
e HDD pack by its 
sides. 
3. Install the HDD pack into the correct position in the laptop. Connect th\
e HDD pack to the 
laptop. 
4.  Secure the HDD door by tightening two M2.5x6 screws.