Toshiba Satellite L300 L305 Maintenance Manual

							
4 Replacement Procedures  4.1 General 
4-2 Satellite L300/L305/ Satellite Pro  L300/ EQUIUM L300/ SATEGO L300 Maintenance Manual 
Safety Precautions 
Before you begin to disassembly read the following safety precautions carefully. Be sure to 
follow them while you are working.  
DANGER: 
1. Always use the genuine batteries or replacement batteries authorized by \
Toshiba. 
Batteries other than those differ in specifications and are incompatible with the 
computer. They may burst or explode. To avoid leakage of alkaline soluti\
ons, 
never heat or disassemble the battery packs. Never throw the battery pac\
ks into a 
fire. If this is violated, they will explode. 
2. The components such as the power suppl y and FL inverter carry high voltages. 
When you partially disassemble the comput er and turn on the components, use 
extreme care not to touch the connectors and components to avoid the ris\
k of 
electrical shock. Do not disassemble individual components during first-\
level 
maintenance. 
 
WARNING:  
1. To avoid the risk of electrical shock, turn the computer off and remove \
the AC 
adapter from the electrical outlet. 
2. Because the battery in the computer is left charged, the risk of electri\
cal shock 
remains even after the AC adapter is removed from the electrical outlet.\
 To avoid 
the risk of electrical shock, be sure to remove any metal jewelry or acc\
essories 
such as necklaces, bracelets, and rings before starting work. Never work\
 with 
damp or wet hands. 
3. To avoid personal injury, use care to avoid the sharp edges or corners o\
f the 
components. 
  
						

							
4.1 General   4 Replacement Procedures 
Satellite L300/L305/ Satellite Pro  L300/ EQUIUM L300/ SATEGO L300 Maintenance Manual 4-3 
CAUTION:  
1. Before replacing a component, make su re that the replacement component meets 
the required specifications. To avoid computer failures, never use compo\
nents 
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. Whe\
n a screw 
is removed, be sure to replace a screw that is the same size as the orig\
inal screw.  
Make sure that all the screws are fastened securely. Loose screws can ca\
use 
short circuits, overheating, 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 caus\
ed by 
accidental contact with the energized components. 
4. For AC input, be sure to use the AC adapter and AC power cable that come\
 with 
your computer 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 computer and that all the cabl\
es and 
connectors 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 do\
wn 
before starting inspection or repair task. 
  
						

							
4 Replacement Procedures  4.1 General 
4-4 Satellite L300/L305/ Satellite Pro  L300/ EQUIUM L300/ SATEGO L300 Maintenance Manual 
Before You Begin 
Before you begin to disassembly the computer, 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 computer only when an abnormality has occurred. 
Use only the recommended tools. 
To run and store the computer, 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 computer 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 computer, use the specified screws to fasten the parts to the specified 
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 
computer operation.  
						

							
4.1 General   4 Replacement Procedures 
Satellite L300/L305/ Satellite Pro  L300/ EQUIUM L300/ SATEGO L300 Maintenance Manual 4-5 
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. T\
o reconnect 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 pr\
essing down the sides 
of the pressure plate so that the plate is flush with the sides of the c\
onnector. Grasp and pull 
the cable gently to check that the cable is connected firmly. If the cable comes off the 
connector, reinsert the cable by raising the pressure plate up to a sati\
sfactory 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 computer after you have disassembled the computer and fixed 
the component that caused the problem. 
When reassembling the computer, 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 a\
re 
secure.  
 
After installing a FRU, make sure that the FRU and computer work normally.   
						

							
4 Replacement Procedures  4.1 General 
4-6 Satellite L300/L305/ Satellite Pro  L300/ EQUIUM L300/ SATEGO L300 Maintenance Manual 
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 repairin\
g 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)  
  
						

							
4.1 General   4 Replacement Procedures 
Satellite L300/L305/ Satellite Pro  L300/ EQUIUM L300/ SATEGO L300 Maintenance Manual 4-7 
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 even-numbered length    Brown 
‰  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, such as 2.5 
mm and 2.6 mm.   
 
Symbols of Screws on the Computer Body 
For easy maintenance, the screw types are shown on the computer 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.) 
  
						

							
4 Replacement Procedures  4.1 General 
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 
terminals. Do not drop, hit, twist, or bend the battery packs. Do not sc\
ratch or break up 
their casing. 
1. Turn the computer upside down so that the back is facing you. 
2. Slide out the battery lock. 
3. Slide the battery release latch and remove the battery pack from the computer. 
1
2
Battery latch Battery packBattery lock
 
Figure 4-1 Removing the battery pack 
NOTE:  Dispose of the used battery packs as required by local ordinances\
 or 
regulations. 
4-8 Satellite L300/L305/ Satellite Pro 
L300/ EQUIUM L300/ SATEGO L300 Maintenance Manual  
						

							
4.1 General   4 Replacement Procedures 
Satellite L300/L305/ Satellite Pro  L300/ EQUIUM L300/ SATEGO L300 Maintenance Manual 4-9 
Installing the Battery Pack 
Install the battery pack according to the following procedures and Figur\
e 4-1. 
CAUTION:  The battery packs contain a lithium ion battery, which can exp\
lode due to 
improper replacement, use, handling, or disposal. Always dispose of the \
battery packs 
as required by local ordinances or regulations.  Use only replacement ba\
tteries 
recommended by Toshiba. 
 
NOTE: Visually check the batterys terminals. If they are dirty, clean t\
hem with 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.  
						

							
4 Replacement Procedures  4.1 General 
 Removing the Optional PC Card 
Remove the optional PC card according to the following procedures and Figur\
e 4-2, after 
checking that the computer is turned off in boot mode. 
CAUTION:  Install or remove the PC card correctly, according the manuals\
 for the PC 
card and the operating system you are using. 
1. Push the eject button for the PC card to be removed until it stops then release the 
button. 
2. When the eject button pops out slightly, push it again. 
3. When the PC card pops out, grasp it and pull it out. 
Eject button
PC card 
Figure 4-2 Removing the PC card 
 
4-10 Satellite L300/L305/ Satellite Pro 
L300/ EQUIUM L300/ SATEGO L300 Maintenance Manual  
						

							
4.1 General   4 Replacement Procedures 
Satellite L300/L305/ Satellite Pro  L300/ EQUIUM L300/ SATEGO L300 Maintenance Manual 4-11 
Installing the Optional PC Card 
Install the optional PC card according to the following procedures and F\
igure 4-2, after 
checking that the computer is turned off in boot mode. 
1. Insert the PC card gently until it stops and is seated securely. 
2. After checking that the PC card is seated securely, push the PC card rel\
ease lever 
slightly. 
After the PC card is installed, check the hardware configuration in the \
Hardware Setup or 
TSETUP program to make sure that the PC card is compatible with the current hardware 
configuration.