Toshiba Satellite L300 L305 Maintenance Manual

2  Troubleshooting 2.4  System Board 
2-10 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 2-11 
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...

2  Troubleshooting 2.5  2.5-inch HDD 
2-12 Satellite L300/L305/Satellite Pro L300/EQUIUM L3 00/SATEGO L300     Maintenance Manual 
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...

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,...

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...

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  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...

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...

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...

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...