Toshiba Satellite L300 L305 Maintenance Manual

							
2  Troubleshooting  
2-iv Satellite L300/L305/Satellite Pro L300/EQUIUM L3 00/SATEGO L300     Maintenance Manual 
Figures 
Figure 2-1  Basic Flowchart ........................................................................\
..................... 2-3 
Tables 
Table 2-1  HDD Error Code and Status ........................................................................\
 2-14 
  
						

							
2.1 Outline 2  Troubleshooting 
Satellite L300/L305/Satellite Pro L300/EQUIUM L300/SATEGO L300     Maintenance Manual 2-1 
2.1 Outline 
This chapter describes the fault diagnosis proced ures for field replaceable units (FRUs) in the 
computer. 
 
The FRUs covered here are as follows: 
1.  System board    2.   HDD                    3.  Keyboard 
4.  Display    5.  ODD drive    6.  LAN 
7.  Speaker      8.  Cooling module 
 
 
See Chapter 4 for the procedures to replace FRUs  and Chapter 3 for the procedures to use test 
programs 
The following tools are required to  perform the diagnostic procedures: 
1. Diagnostics (maintenance test program) disk 
2. Phillips screwdrivers (2 mm, 2.5 mm) 
3. Cleaning disk kit (for ODD drive cleaning) 
4. Bootable CD 
5. Multimeter 
6. External monitor 
7. Headphone 
8. Microphone 
9. A-BEX TEST DVD  
10. Music CD 
11. DVD TSD-1 (TOSHIBA EMI DVD Test Media)  
						

							
2  Troubleshooting 2.2  Basic Flowchart 
2-2 Satellite L300/L305/Satellite Pro L300/EQUIUM L3 00/SATEGO L300     Maintenance Manual 
2.2 Basic Flowchart 
The basic flowchart in Figure 2-1 serves as a guide for identifying a possibly faulty FRU. 
Before going through the diagnostic flowchart steps, verify the following: 
‰ Ask the user if a password has been register ed and, if so, ask him or her to enter the 
password.  If the user has forgotten the syst em password, use a jump wire to make a 
short circuit on M/B  B500 location, then turn the computer power on.  When booted, 
the computer overrides password protecti on and automatically erases the current 
password. 
‰  Make sure the Windows® Vista Home Editi on has been installed on the HDD.  Any 
other operating system can cause the computer to malfunction. 
‰  Make sure any piece of optional  equipment has been installed.  
						

							
2.2  Basic Flowchart 2  Troubleshooting 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Star
t 
Connect the AC Adapter
DC IN LED on ??
BATTERY LED on ??
Turn the power on.
Any error message displayed ??
Message In Touch with
Tomorrow Toshiba displayed
Follow the power supply diagnostic
procedure in Section 2.3
Follow the power supply diagnostic
procedure in Section 2.3
Follow the system board diagnostic
procedure in Section 2.4
Follow the display diagnostic
procedure in Section 2.7
Password= displayed ??
OS started ??
See the previous page to
delete the password. 
Follow the HDD diagnostic
procedure in Section 2.5
Yes 
Yes
No
Yes
No  Yes
No
No
Yes
No
Yes
No
1 
Figure 2-1  Basic Flowchart (1/2) 
 
Satellite L300/L305/Satellite Pro L300/EQUIUM L3 00/SATEGO L300     Maintenance Manual 2-3  
						

							
2  Troubleshooting 2.2  Basic Flowchart 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Keyboard works well ??Follow the keyboard diagnostic
procedure in Section 2.6No
1
Insert Bootable CD into ODD
Diagnostic Program 
Loaded  ?? 
Perform each test with the
diagnostic program.
Any error detected by the
diagnostic program ??
 
Perform the continuous test to check if the
error is intermittent.
 
Follow the ODD diagnostic
procedure in Section 2.8
Identify the test re sulting in the error
and perform the appropriate
diagnostic procedures
Any error detected by the
diagnostic program ??
 
Identify the test resulting in the
error and perform the appropriate
diagnostic procedures
The system is normal. 
END
No
No
No
Yes
 
Yes
Yes
 
 
Figure 2-1  Basic Flowchart (2/2) 
2-4  Satellite L300/L305/Satellite Pro L300/EQUIUM L3 00/SATEGO L300     Maintenance Manual  
						

							
2.2  Basic Flowchart 2  Troubleshooting 
Satellite L300/L305/Satellite Pro L300/EQUIUM L300/SATEGO L300     Maintenance Manual 2-5 
If the diagnostic program cannot detect an e rror, the error may be intermittent.  Run the 
continuous test program repeatedly to isolate the problem.  Check  the log utilities function to 
confirm which diagnostic test  detected the error, then perform the appropriate 
troubleshooting procedures as follows: 
 
1.  If an error is detected by the System test, Memory test, Async test, Printer test, sound 
test, or Real Timer test, follow the system board troubleshooting procedures in 
Section 2.4. 
2. If an error is detected by the Hard  Disk test, follow the HDD troubleshooting 
procedures in Section 2.5. 
3.  If an error is detected by the Keyboard  test, follow the keyboard troubleshooting 
procedures in Section 2.6. 
4.  If an error is detected by the Displa y test, follow the display troubleshooting 
procedures in Section 2.7. 
5.  If an error is detected by the ODD test,  follow the ODD troubleshooting procedures in 
Section 2.8. 
6.  If an error is detected by the LAN test, follow the LAN troubleshooting procedures in 
section 2.9. 
7. If an error is detected by  the Finger Print test, follow  the Finger Print troubleshooting 
procedures in section 2.10. 
8.  If an error is detected by the Speaker test, follow the  Speaker troubleshooting 
procedures in section 2.11. 
9.  If an error is detected by the IEEE 13 94 test, follow the IEEE 1394 troubleshooting 
procedures in section 2.12. 
10.  If an error is detected by the Fan On/Off test, follow the cooling module 
troubleshooting procedures in Section 2.13.  
						

							
2  Troubleshooting 2.3  Power Supply 
2-6 Satellite L300/L305/Satellite Pro L300/EQUIUM L3 00/SATEGO L300     Maintenance Manual 
2.3 Power Supply 
The power supply in the computer controls many functions and components. To check if the 
power supply is defective or malfunctioning, follow the troubleshooting procedures below as 
instructed. 
 
Procedure 1  Power Icon Check 
Procedure 2   Connection Check 
Procedure 3  Replacement Check 
Procedure 1  Power Icon Check 
The following two power LEDs indicate the power supply status: 
‰  Battery LED 
‰  DC IN LED 
The power supply controller disp lays the power supply status through the Battery and DC IN 
LEDs as in the tables below. 
‰  Battery LED 
Battery LED Power supply status 
On in Amber Battery being charged 
On in Green  Battery fully charged, with AC adapter connected 
Blinking in Amber 
(at equal intervals) 
Battery low *1 while driving the computer 
Off Else 
  
						

							
2.3  Power Supply 2  Troubleshooting 
Satellite L300/L305/Satellite Pro L300/EQUIUM L300/SATEGO L300     Maintenance Manual 2-7 
‰  DC IN LED 
DC IN LED Power supply status 
On in Green  DC power being supplied (from the AC adapter) 
Off Battery damage and can’t charge during DC-in. 
Off Else 
 
If the DC IN LED off, follow the steps below: 
1.  Remove the battery pack and the AC ad apter to shut off power supply to the 
computer. 
2.  Attach the battery and AC adapter back again. 
If the LED still off, follows the steps below: 
 
Check 1  Make sure the DC IN LED goes on in Green .  If it does not, go to Proced\
ure 
2. 
 
Check 2  Make sure the Battery LED goes on in  Amber or Green or orange.  If it does 
not, go to Procedure 3. 
  
						

							
2  Troubleshooting 2.3  Power Supply 
Procedure 2  Connection Check 
Power is supplied to the system board as illustrated below:  
AC
adaptor System board
AC power cord AC adaptor cord
Battery pack
 
 
Follow the steps below to check whether each  connector has been connected correctly:  
Check 1  Make sure the AC adaptor and AC  power cord have been firmly plugged 
into the DC IN socket and wall outlet,  respectively.  When they have been 
connected correctly, perform Check 2. 
Check 2  Connect a new AC adaptor and AC power cord. 
•   If the DC IN LED does not go on, go to Procedure 3. 
•  If the battery LED does not go on, perform Check 3. 
Check 3  Make sure the battery pack has  been correctly installed in the computer. 
If the battery LED does not go on while  the battery pack has been installed 
correctly, go to Procedure 3. 
Procedure 3  Replacement Check 
The system board, power supply board, or CPU may be faulty.  Disassemble the computer 
according to Chapter 4 and follow the steps below:  
 
Check 1  Replace the power supply board with  a new one.  If the battery pack is still 
not working properly, perform Check 2. 
 
Check 2  Replace the system board with a new  one.  If the battery pack is still not 
working properly, perform Check 3. 
 
Check 3  Replace the CPU with a new one.
2-8  Satellite L300/L305/Satellite Pro L300/EQUIUM L3 00/SATEGO L300     Maintenance Manual  
						

							
2.4 System Board  2  Troubleshooting 
Satellite L300/L305/Satellite Pro L300/EQUIUM L300/SATEGO L300     Maintenance Manual 2-9 
2.4 System Board 
To check if the system board is defective or malfunctioning, follow the troubleshooting 
procedures below as instructed. 
Procedure 1  Message Check 
Procedure 2  Test Program Check 
Procedure 3  Replacement Check 
Procedure 1  Message Check 
When the power is turned on, the system performs the self-diagnostic Power on Self Test 
(POST) embedded in the BIOS ROM.  The POST  tests and initializes each IC on the system 
board. 
‰  If an error message appears on the display, perform Check 1. 
‰  If there is no error me ssage, go to Procedure 2. 
‰ If FREE-DOS or Windows Vista Home Editio n is loaded normally, go to Procedure 
3. 
Check 1  If the following error message  is displayed on the screen, press the F1 key 
as prompted.  These errors occur when the system configuration 
preserved in the RTC memory (genera lly called CMOS memory) does not 
match the actual configuration or when the data is lost. 
  If you press the  F1 key as prompted by the message, the TSETUP screen 
appears to set the system configurat ion.  If the error message appears 
frequently when the power is turned on, replace the RTC battery.  If any 
other error message is disp layed, perform Check 2. 
 
  *** Bad RTC battery *** 
  Check system.  Then press [F1] key  
 
Check 2  If the following error message is  displayed on the screen, press any key as 
prompted by the message. 
  The error message appears when either  data stored in RAM to be resumed 
is lost because the battery has been exhausted or the system board is 
faulty. 
  If any other error message displays, perform Check 3. 
 
Check 3         Resume failure and press any key to continue.