Toshiba Satellite L450 L450d Pro Maintanance Manual

3.  Tests and Diagnostics  
 10 
 
3.4 Beep sound test 
The beep sound test allows the user to aurally confirm the speaker functions. And the speaker 
will send out music during test. 
NOTE:  Remember to tune up the volume as “ Maximum” before this test starts.   
 
The screen should display as below, indicating whether the test is passe\
d or failed after the 
question. 
  

 3 Tests and Diagnostics 
 11
 
 
3.5 Fan ON/OFF Test 
The fan test allows the user to test aurally whether the fan is working.\
 And follow the below 
procedures for this test: 
  The computer will let the fan be “ON” after any key pressed. Feel the wind or 
listen the rotating sound to check whether the fan is working or not. 
NOTE:  Remember to approach fan outlet that is near right side of unit whether \
fan is 
“ON”. 
   The computer will stop the fan working after any key pressed. Feel the wind...

3.  Tests and Diagnostics 
 12 
 
  After Press “Y”, computer will auto test FAN RPM, and it will auto check. 
The screen will show below picture, if FAN RPM check is OK; 
 
If FAN RPM check is NG, it will show as below: 
  

 3.  Tests and Diagnostics 
 13
3.6 Main Battery Charge Test 
NOTE:  The AC adaptor  should be connected to successfully run this test 
1.>.  90W with 19V DC for UMA SKU 
2.>-  120W with 19V DC for discrete SKU 
This test shows and measures the main battery: 
  Battery type (Lion) 
   Manufacturer (Sanyo/Panasonic/Sony) 
   Remain charge capacity (0 ~ 100%) 
   Charge function (PASS/FAIL) 
- “Battery Is Full” showed when “remain charge capacities” is 100% 
The screen should display as below, if the...

3.  Tests and Diagnostics 3.7 Main Battery Change Test 
 14 
 
 
3. 7 FDD Test 
NOTE:  Before running the FDD test, prepare a formatted work diskette (1.44 MB\
).  
Remove the diagnostics diskette and insert the work diskette into the FD\
D.  The contents of 
the floppy diskette maybe erased. 
The Floppy Disk Test includes three subtests of the: 
1. Sequential seek/verify function (Range: Track 0 ~ 79) 
2.  Funnel code seek/verify function (Range: Track 0 ~ 79) 
3.  Write/Read/Compare pattern function...

 3.  Tests and Diagnostics 
 15
 
 
 
 
 
 
3.8 Memory check 
This test will check if the computer’s Memory Frequency and Size is correct in every slot. 
 Before Memory test start, you should choice the below item: 
1. Memory Read test 
2. Memory Write test 
3. Memory Read & Write test 
4. Memory INFO test  

3 Tests and Diagnostics  
 16 
 
When you execute this test, after you press the re lated number, the test picture will show as 
below: 
Memory Read Test 
  

 3.  Tests and Diagnostics 
 17
     Memory Write Test 
 
              Memory Read & Write Test 
  

3 Tests and Diagnostics  
 18 
     Memory Info Test 
 
 
 
 
 
3. 9 Keyboard Test 
The keyboard test checks the all keys function. 
NOTE:  The Num Lock  and the  Overlay  mode must be off to execute the keyboard test. 
 
Before keyboard test starts, the keyboard matrix code should be chosen as below display: 
1. S (US, for America) 
2.  J (Japan, for Japan) 
3.  K(UK, for United Kingdom) 
When you execute this test, the keyboard layout is drawn on the display. W\
hen any key is  

 3.  Tests and Diagnostics 
 19
pressed, the corresponding key on the screen changes to black as shown b\
elow. 
It will indicate whether the sub test is passed or failed after the ques\
tion. 
                                                          US Keyboard   \
   
 
                                        
                                                 Japan keyboard 
NOTE:  The “Fn” key cannot be tested in the keyboard test.
 
 
To determine whether the “ Fn” key is working correctly, press “...