Toshiba Satellite L450 L450d Pro Maintanance Manual

							2 Troubleshooting Procedures 
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual 
 
                                                                    
 47 
Procedure 1:  LAN connection check 
Procedure 2:  LAN port check 
Procedure 1  LAN connection check 
The LAN cable may be damaged or the conne ctions may be loose. Perform Check 1: 
Check 1  Make sure LAN cable is firmly pl ugged into both the LAN set and the LAN port 
of the computer. If the cable is  connected correctly, go to Check 2. 
Check 2  The LAN cable may be damaged. Re place with a good cable. If the malfunction 
remains, go to Procedure 2. 
Procedure 2  LAN port check 
The LAN set may be faulty. Perform Check 1: 
Check 1  Try connecting a different LAN port to the computer. If the replacement LAN  works, the original set may be damaged. If the replacement set does not work, the 
system board may be damaged. Replace it with a new one following the 
instructions in Chapter 4. 
 
  
						

							 3.  Tests and Diagnostics 
 1
Chapter 3 
Tests and Diagnostics  
						

							3.  Tests and Diagnostics  
 2 
Contents 
3.1 The Diagnostic Test ........................................................................\
.......................................... 4 
3.2 Executing the Diagnostic Test........................................................................\
...................... ..... 5 
3.3 Display Configuration ........................................................................\
.............................. ... 9 
3.4 Beep sound test........................................................................\
................................................ 10 
3.5 Fan ON/OFF Test ........................................................................\
............................................ 11 
........................................................................\
................................................................... 12 
3.6 Main Battery Charge Test ........................................................................\
............................... 13 
3. 7 FDD Test ........................................................................\
........................................................ 14 
3. 9 Keyboard Test ........................................................................\
................................................ 18 
3.10 Mouse (Pad) Test ........................................................................\
.................................. ........ 20 
3.11 LCD Pixels Mode Test ........................................................................\
.................................. 21 
3.12 Magnetic Switch Test ........................................................................\
.............................. ...... 22 
3.13 LAN Test ........................................................................\
....................................................... 24 
3.14 RTC Test ........................................................................\
....................................................... 27 
3.15 Read 1394 GUID ........................................................................\
........................................... 28 
3.16 Speaker EQ(Equalizer Quality factor) Type Check&Re-Write ............................................ 29 
3.17 Sensor Button Test ........................................................................\
................................ ........ 29 
3.18  Front Edge Logo check ........................................................................\
............................. 30  
						

							 3.  Tests and Diagnostics 
 3
3.19 1st HDD Test ........................................................................\
.............................................. ... 33 
3.19 2
nd HDD Test ........................................................................\
............................................ 35 
3.21 Read DMI...........................................................\
................................................................... 39 
3.22 Write DMI........................................................................\
..................................................... 39  
						

							3.  Tests and Diagnostics  
 4 
3.1 The Diagnostic Test 
This chapter explains how to use the Test & Diagnostic program to test the functions of the 
(Base on Los Angeles 10A+/10AG+/10AL+ T&D version 1.2)  hardware modules. The Test & 
Diagnostic Program is stored on the T&D diskettes. The program consists of a series of tests that 
run automatically when the Diagnostics Program items are selected and executed. 
NOTES:  To start the diagnostics, follow these steps 
1. Check all cables for loose connections. 
2. Exit this program when you are at Main Menu. 
The TEST & DIAGNOSTIC PROGRAM contains  the following functional tests: 
  CONFIG CHECK TEST 
  Beep sound TEST 
  FAN ON/OFF TEST 
  MAIN BATTERY CHARGE TEST 
  FDD TEST 
  Memory check 
  KEYBOARD TEST 
  MOUSE(PAD) TEST 
  LCD PIXELS MODE TEST 
  MAGNETIC SWITCH TEST 
  LAN TEST 
  RTC TEST 
  IEEE1394 CODE TEST 
  Speaker EQ Check&Rewrite 
  Button Test 
  Front Edge logo Check 
  1
st HDD Test 
  2nd HDD Test 
  RDMI Test 
  WDMI Test  
 
You will need the following equipment to perform some of the Diagnostic test programs. 
 The diagnostics USB disk 
  A formatted working diskette for the floppy disk drive test (Floppy Disk Driv\
e Test) 
  A LAN loopback  
						

							 3.  Tests and Diagnostics 
 5
3.2 Executing the Diagnostic Test 
Free_DOS is required to run the DIAGNOSTICS PROGRAM.  To start the DIAGNOSTIC 
PROGRAM, follow these steps: 
Insert the diagnostics USB disk drive and turn on the computer.  (The diagnostics diskette 
contains the Free-DOS boot files.) And then follow the instructions for\
 T&D program 
installed in USB driver)  
The T&D Program can run single test by you press corresponsive English letter of test i\
tem, and 
it also asks you if you like to copy test log file to USB disk as refere\
nce at the end of test(s).  The test list is as the following:  A. CONFIG CHECK TEST 
B.  Beep sound TEST 
C.  FAN ON/OFF TEST 
D.  MAIN BATTERY Charge TEST 
E.  FDD TEST 
F.  Memory check  
G.  KEYBOARD TEST 
H.  MOUSE (PAD) TEST 
I.   LCD PIXELS MODE TEST 
J.   MAGNETIC Switch TEST 
K.  LAN TEST 
L.  RTC TEST 
M.  IEEE1394 CODE TEST 
N.  SPEAKER EQ CHECK TEST 
O.  Button Test 
P.  Front Edge logo Check 
Q.  1st HDD Test 
R.  2nd HDD Test 
S.  RDMI Test 
T.  WDMI Test 
  
						

							3.  Tests and Diagnostics  
 6 
The below display will show up at the beginning of T&D program 
 
 
 
 
  If the test result passes, the following display will show up: 
 
 
  
						

							 3.  Tests and Diagnostics 
 7
If an error is detected and a test fails, the following message displays: 
 
 
 
 
Then press any key for next actions – the below display presented if \
copying test log file 
onto diskette is necessary. This action will be executed when “ Y” key pressed. 
 
 
  
						

							3.  Tests and Diagnostics  
 8 
 
It will skip this process if “N” key pressed. 
 
And then it will check if it’s necessary to leave this program. Program will quit when “Y ” 
key pressed and it will go back main menu for next test if “ N” key pressed.  
 
 
 
 
 
 
  
						

							3.3 Display configuration 3 Tests and Diagnostics 
 9
3.3 Display Configuration 
This Item will show the unit configuration. It includes: 
  CPU (CPU type) 
   DDRAM SIZE 
   Panel ID 
   HDD1 type & capacity (Vendor ID. Model .Firmware) 
   HDD2 type & capacity (Vendor ID. Model .Firmware) 
   VRAM  size / VGA CHIP TYPE  
   Battery cell (3cell; 6cell; 9cell) 
   Wireless type  
   LAN Type 
   1394 
   Bluetooth 
   SKUID 
The screen should display as below: