Toshiba Satellite L300 L305 Maintenance Manual

							
2  Troubleshooting 2.4  System Board 
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2.4 System Board  2  Troubleshooting 
Satellite L300/L305/Satellite Pro L300/EQUIUM L300/SATEGO L300     Maintenance Manual 2-11 
Procedure 2  Test Program Check 
The maintenance test program contains seve ral programs for diagnosing the system board 
and CPU.  Execute the following test programs  using the procedures described in Chapter 3. 
1. System test 
2. Memory test 
3. Keyboard test 
4. Display test 
5. Hard Disk test 
6. Mouse test 
7. ODD test 
8. Sound test 
9. LAN test 
 
If an error is detected during these tests, go to Procedure 3. 
 
Procedure 3  Replacement Check 
The system board, memory, or CPU may be defe ctive.  Disassemble the computer following 
the steps described in Chapter 4 and replace th e system board, memory module or CPU with 
a new one.  
						

							
2  Troubleshooting 2.5  2.5-inch HDD 
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2.5 2.5-inch HDD 
To check if the 9.5mm or 12.5mm HDD is defective or malfunctioning, follow the 
troubleshooting procedures below as instructed. 
Procedure 1  Message Check 
Procedure 2  Partition Check 
Procedure 3  Format Check 
Procedure 4  Test Program Check 
Procedure 5  Connector Check and Replacement Check 
 
CAUTION:  The contents of the HDD will be eras ed when the HDD diagnostic test or 
formatting is executed.  Save the required cont ents of the HDD to floppy disks or other 
storage drive in advance. 
 
Procedure 1  Message Check 
When the computers HDD does not function pr operly, some of the following error messages 
may appear on the display.  Follow  the steps below to check the HDD. 
 
Check 1  If either of the following messages appears, go to Procedure 2.  If the 
following messages do not appear, perform Check 3. 
 
Insert system disk in drive 
Press any key when ready ..... 
Or 
Non-System disk or disk error 
Replace and press any key   
 
Check 2  Check TSETUP to see if the Hard Di sk option has been set to “Not used”.  
If so, choose another setting and re start the computer. If the problem 
persists, go to Procedure 2. 
Procedure 2  Partition Check 
Boot from the DOS system.  Perform the following checks: 
 
Check 1  Type C:  and press the Enter key.  If you cannot change to drive C, 
perform Check 2.  If you can change to drive C, perform Check 3. 
 
Check 2  Type FDISK  and press the Enter key.  Choose “Display partition 
information” from the FDISK menu.  If  drive C is listed, perform Check 3.  
If drive C is not listed, return to th e FDISK menu and choose the option to  
						

							
2.5  2.5-inch HDD 2  Troubleshooting 
Satellite L300/L305/Satellite Pro L300/EQUIUM L300/SATEGO L300     Maintenance Manual 2-13 
create a DOS partition on drive C.  Then restart the computer.  If the 
problem persists, go to Procedure 3. 
 
Check 3  If drive C is listed as active in  the FDISK menu, perform Check 4.  If drive 
C is not listed as active, return to the FDISK menu and choose the optio\
n 
to set the active partition for drive  C. Then restart the computer. If the 
problem persists, perform Check 4. 
 
Check 4  Enter DIR C:  and press the Enter key.  If the following message is 
displayed, go to Procedure 3.  If contents of drive C are listed on the 
display, perform Check 5. 
 
Invalid media type reading drive C 
Abort, Retry, Fail? 
Check 5  Use the SYS command in the DOS  system to install system files. 
 If the following message appears on th e display, the system files have been 
transferred to the HDD.  Restart the  computer.  If the problem persists, go 
to Procedure 3. 
System transferred 
 
NOTE: If the computer is running Windows Vista Home edition and the hard dis\
k 
capacity is more than 512 MB, the FDISK pr ogram will ask if you need support for a 
partition larger than 2 GB.  Select Y for large partition support; however, be sure to read 
the precaution regarding access by other operating systems. 
 
Procedure 3  Format Check 
The 2.5-inch HDD is formatted using the low-level format program and the FREE-DOS 
FORMAT program.  Using these programs, follow the steps below to format the HDD. 
 
Check 1  Enter FORMAT C:/S/U to format th e HDD and transfer system files.  If 
the following message appears on  the display, the HDD has been 
formatted. 
Format complete 
  If you cannot format the HDD using the test program, go to Procedure 4. 
 
 
 
  
						

							
2  Troubleshooting 2.5  2.5-inch HDD 
 
 
Procedure 4  Test Program Check 
Run the HDD test program stored on the maintenance test program disk for all test items.  
See Chapter 3 for details on how to use the test program. 
If an error is detected during the HDD test, an error code and  status will be displayed.  The 
error codes and their status name s are listed in Table 2-1.  If an error code is not generated 
and the problem still exists, go to Procedure 5. 
 
Table 2- 1 HDD Error Code and Status 
 
 
Code Status
1
 Get Parameter Fail !
2
 Read Old Data Error
3
 Write Pattern Error
4 Read Back Data Error
5
 Data Compare Error
6
 Restore Data Error
7
 Read Verify Error
9
 Seek Error 
10 Disk Controller Self Test Failed
11
 Disk Controller Test unexpected interrupt Failed
12
 Disk Controller action Test Failed
13
 Disk dos not support SMART
14
 Disk read attribute threshold error
15 Disk read attribute value error
16
 Disk SMART attribute value error
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2.5  2.5-inch HDD 2  Troubleshooting 
Procedure 5  Connector Check and Replacement Check 
The HDD or system board may be faulty.  Disassemble the computer following the steps 
described in Chapter 4 and  perform the following checks: 
 
Check 1    Make sure the following connectors have been firmly connected to the 
HDD, system board and CPU. 
HDD System board
CPU
  
If any connector is loose or off, reconn ect it firmly and return to Procedure 1.  
If there is still an error, perform Check 2. 
 
Check 2  The HDD may be damaged. Replace it with a new one following the 
disassembling instructions in Chapter 4.  If the problem persists, perform 
Check 3. 
 
Check 3  The System board may be damaged.  Replace it with a new one following  the disassembling instructions in Ch apter 4.  If the problem persists, 
perform Check 4. 
 
Check 4  The CPU may be damaged.  Replace it with a new one following the  disassembling instructions in Chapter 4.
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2  Troubleshooting 2.7  Keyboard 
2.6 Keyboard 
To check if the computer’s keyboard is defective or malfunctioning, follow the 
troubleshooting procedures below as instructed. 
 
Procedure 1  Test Program Check 
Procedure 2  Connector Check and Replacement Check 
 
Procedure 1  Test Program Check 
 
Execute the Keyboard test availabl e as part of the maintenance test program.  See Chapter 3 
for information on how to perform the test. 
If an error is detected in the test, go to Procedure 2.  If no  error is detected, the keyboard 
itself is normal. 
Procedure 2  Connector Check and Replacement Check 
 
The keyboard or system board may be disconnect ed or faulty.  Disassemble the computer 
following the steps described in Chapte r 4 and perform the following checks: 
 
Check 1  Make sure the keyboard cable has  been firmly connected to the system 
board. 
Keyboard System board CPU
 
 
 If the cable is loose or off, reconnect  it firmly and return to Procedure 1.  
If there is still an error, perform Check 2. 
 
Check 2  The keyboard may be faulty.  Replace it with a new one following the  instructions in Chapter 4.  If the  problem persists, perform Check 3. 
 
Check 3  The System board may be faulty.   Replace it with a new one following the 
instructions in Chapter 4.  If the ke yboard is still not functioning properly, 
perform Check 4. 
Check 4  The memory may be defective.  Replace the memory module with a new 
one  following the steps described in Chapter 4. If the problem persists, 
perform Check 5. 
 
Check 5  The CPU may be faulty. Disassemb le the computer following the steps 
described in Chapter 4 and replace the CPU with a new one. 
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2.7  Display 2  Troubleshooting 
2.7 Display 
To check if the computer’s display is defective or malfunctioning, follow the troubleshooting 
procedures below as instructed.  
Procedure 1  External Monitor Check 
Procedure 2  Test Program Check 
Procedure 3  Connector Check and Replacement Check 
Procedure 1  External Monitor Check 
Connect an external monitor to the computers  external monitor port, then boot the computer.  
The computer automatically detects the external  monitor even if resume mode is enabled. 
If the external monitor works correctly, the internal LCD, LCD/FL cable, or FL may be 
faulty.  Go to Procedure 3. 
If the external monitor appears to have the same  problem as the internal monitor, the system 
board may be faulty.  Go to Procedure 2. 
Procedure 2  Test Program Check 
Insert the diagnostics bootable CD in the com puters CD ROM, turn on the computer and run 
the test.  See Chapter 3 for information on how to perform the test. 
If an error is detected in the  test, go to Procedure 3.  If no erro r is detected, the display itself 
is normal. 
 
Procedure 3  Connector Check and Replacement Check 
The display unit has an LCD module, Fluores cent lamp (FL), panel close switch and FL 
inverter board.  Any of the components or thei r connections may be defective.  Disassemble 
the computer following the steps described in Chapter 4, then perform the following checks: 
(1)    If the FL does not light, perform Check 1. 
(2)    If characters or graphics are not displayed normally, perform Check 5. 
(3)    If the FL remains lit when the display is closed, the panel close switch may be 
defective.  Perform Check 8. 
 
Check 1  Make sure the following cables have been firmly connected to the system 
board and FL inverter board. 
FL FL inverter board System boardCPU
HV cable LCD/FL cable
  
 If any of the cables is loose or off, reconnect it firmly and return to 
Procedure 3.  If there is sti ll an error, perform Check 2. 
Check 2  The LCD/FL cable may be faulty.  Replace it with a new one and return to 
Procedure 3.  If there is sti ll an error, perform Check 3. 
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2  Troubleshooting 2.7  Display 
Check 3  The FL may be faulty.  Replace it with a new one and return to Procedure 
3.  If there is still an error, perform Check 4. 
Check 4  The FL inverter board may be faulty.  Replace it with a new one and  return to Procedure 3.  If there is  still an error, perform Check 5. 
Check 5  Make sure the LCD/FL cable has  been firmly connected to the system 
board and LCD module. 
FL inverter board System boardCPU
LCD/FL cable
 
 
  If the cable is loose or off, reconnect  it firmly and return to Procedure 3.  
If there is still an error, perform Check 6. 
Check 6  The LCD/FL inverter cable may be  faulty.  Replace it with a new one and 
return to Procedure 3.  If there is  still an error, perform Check 7. 
Check 7  The LCD module may be  faulty.  Replace it with a new one and return to 
Procedure 3.  If there is sti ll an error, perform Check 8. 
Check 8  The System board may  be faulty.  Replace it with a new one.  If there is 
still an error, perform Check 9. 
Check 9  The CPU may be faulty.  Replace it with a new one following the  instructions in Chapter 4. 
Check 10  The memory may be defective.  Replace the memory module with a new 
one following the steps described in Chapter 4. If the problem persists, 
perform Check 10. 
 
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2.8  ODD Drive 2  Troubleshooting 
2.8  ODD (Optical Disk Drive) 
To check if the internal ODD drive is defective or malfunctioning, follow the troubleshooting 
procedures below as instructed.  
Procedure 1  ODD Cleaning Check 
Procedure 2  Test Program Check 
Procedure 3  Connector Check and Replacement Check  
 
Procedure 1  ODD Cleaning Check 
1. Turn off the power to the computer. 
2. Open the ODD tray by inserting a slender object  such as a straightened paper clip into 
the eject hole.  The object must be long enough to activate the eject mechanism. 
3.  Clean the laser pickup lens with a lens clean er.  Apply the cleaner to a cloth and wipe 
the lens. 
4.  If the ODD drive still does  not function properly after cl eaning, go to Procedure 2. 
Procedure 2  Test Program Check 
Execute the ODD drive test program available as  part of the maintenance test program. Insert 
the diagnostics CD in the computers CD, turn  on the computer and run the test. Then insert a 
test ODD (Toshiba-EMI DVD-ROM  TEST DISK TSD-1) into the ODD drive. See Chapter 3 
for information on how to perform the test. 
If any error is detected by the test, go to Procedure 3.  
Procedure 3  Connector Check and Replacement Check 
The ODD drive is connected to the system board by the connector.  The connector may be 
disconnected from the system board or faulty.   Disassemble the computer following the steps 
described in Chapter 4 and  perform the following checks: 
Check 1  Make sure the following connector  has been firmly connected to the ODD 
drive and the system board. 
 
 
ODD 
    Drive System board
CPU 
Attachment caseConnector
 
If the connector is loose or off, reconnect  it firmly and return to Procedure 2.   
If there is still an error, perform Check 2. 
Check 2  The connector may be faulty.   Replace the connector with a new one 
following the steps in Chapter 4.  If  the ODD drive is still not functioning 
properly, perform Check 3. 
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