Toshiba Satellite L450 L450d Pro Maintanance Manual

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Satellite L450/Pro L450/L450D/Pro L450D Maintenance Manual  1-14 
1.5  Batteries 
The computer has the following two types of batteries: 
  Main Battery Pack 
  Real Time Clock (RTC) Battery 
 
1.5.1  Main Battery 
The main battery pack serves as the com puters main power source when the AC adapter is not 
attached. The main battery maintains the state of the computer so that it can resume it. 
  3-cell LI-ION / 6-cell LI-ION  
  Inserted from bottom side 
  Charging time 12 hrs max.(System on)/ 4 hrs max. (System off) 
  One hour quick charge to 60%~70% 
 
1.5.2  Battery Charging Control 
Battery charging is controlled by EC KB926. Wh
 en the AC adapter and battery pack are attached 
to the computer, the EC KB926 controls the charge on/off state and detects a full \
charge. 
  Battery Charge 
When the AC adapter is attached, the battery is charged by off-state charg\
e when the system 
is powered off or by on-state charge when it is powered on. 
 
Table 1-3  Quick/Normal Charging Time 
State Charge  Time 
Off-State Charge 3/6 Cell About 4 hours max 
On-State Charge  3/6 Cell About 12 hours max 
 
  
						

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Satellite L450/Pro L450/L450D/Pro L450D Maintenance Manual  1-15 
NOTE: The time required for normal charge depends on the power consumption by\
 the 
system. Using the fluorescent lamp and frequently accessing the disk con\
sume much power 
and lengthen the charge time. 
Any of the following cases stops battery charge: 
1.  The battery becomes fully charged. 
2.  The AC adapter or battery pack is removed. 
3.  The battery or AC adapter voltage is abnormal. 
 
  Detection of full charge 
A full charge is detected only when the battery is being charged by quic\
k or normal charge. 
A full charge is detected when either of the following conditions is met: 
1.  The current in the battery charging circuit drops below the predetermined value. 
2.  The charging time exceeds the fixed limit. 
 
1.5.3  RTC Battery 
The RTC battery provides power to keep the current date, time and other system
  information in 
memory while the computer is turned off.  
						

							  
Chapter 2 
Troubleshooting Procedures 
2  
 
 
 
 
 
 
 
 
 
  
						

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Chapter 2  Contents 
2.1 Troubleshooting Introduction ........................................................................\
.................... 3 
2.2 Troubleshooting Flowchart ........................................................................\
........................ 4 
2.3  Power Supply Troubleshooting............................................\
..............................................9 
2.4 Display Troubleshooting........................................................................\
.......................... 14 
2.5 Keyboard Troubleshooting ........................................................................\
...................... 17 
2.6   External USB Devices Troubleshooting ........................................................................\
..19 
2.7 Touchpad Troubleshooting ........................................................................\
......................21 
2.8 Speaker Troubleshooting ........................................................................\
......................... 23 
2.9  Optical drive troubleshooting ........................................................................\
.................. 25 
2.10 Modem Troubleshooting........................................................................\
.......................... 29 
2.11 Wireless LAN Troubleshooting ........................................................................\
............... 31 
2.12 Camera Troubleshooting........................................................................\
..........................33 
2.13 3 in 1 card Troubleshooting ........................................................................\
.....................35 
2.14 HDD Troubleshooting ........................................................................\
.............................37 
2.15 CRT Port Troubleshooting........................................................................\
.......................39 
2.16 HDMI Troubleshooting ........................................................................\
...........................41 
2.17 MIC troubleshooting process …………………………\
……………………………….. 42 
2.18 Thermal Module troubleshooting ........................................................................\
............ 45 
2.19 LAN troubleshooting ........................................................................\
...............................47  
						

							2 Troubleshooting Procedures 
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Figure 
Figure 2-1        Troubl eshooting Flowchart(1/2) ….…………………………\
………………..4 
Figure 2-1        Tr oubleshooting Flowchart(2/2)…..………………………\
…………………..6 
Figure 2-2        Power Supply Flowchart ………….…………\
………………………………..9 
Figure 2-3       Display Flowchart …………………………………………\
…………………14 
Figure 2-4  Keyboard troubleshooting process .................................................................. 17 
Figure 2-5  External USB device troubleshooting process ................................................ 19 
Figure 2-6       TouchP ad troubleshooting Process ………………………………\
…………..21 
Figure 2-8  Speaker trou bleshooting process .....................................................................
 23 
Figure 2-9  Optical drive troubles hooting process ……………………………………\
….25 
Figure 2-10  Modem troubl eshooting process  ………….………………………\
…………28 
Figure 2-11  Wireless LAN troubleshooting process ….……………………\
……………..30 
Figure 2-12  Camera trou bleshooting process …………………………………\
…………. 32 
Figure 2-13     3 in 1 card troubleshooting process…………………………\
.…..…….………34 
Figure 2-14     HDD tr oubleshooting process……………………………….…\
……………..36 
Figure 2-15    CRT Port troubleshooting process ………………………………\
…………....38 
Figure 2-16     HDMI Troubleshooting process ………………………………\
……………..40 
Figure 2-17     MIC trou bleshooting process …………………………………\
…………….. 42 
Figure 2-18     Therma

l  Module Troubleshooting………...……………………\
……………44 
Figure 2-19     LAN Troubleshooting ………………………\
....………………………..........46 
 
 
 
 
Tables 
Table 2-1  Battery LED
 ........................................................................\
............................... 10 
Table 2-2  DC-IN LED ........................................................................\
................................
 11 
  
						

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2.1  Troubleshooting Introduction 
Chapter 2 describes how to determine if a Fi eld Replaceable Unit (FRU) in the computer is 
causing the computer to malfunction.  The FRUs covered are:  
1. Display  5. Speaker  9. Camera  13. HDMI 
2. Keyboard  6. Optical drive  10. 3in1 card  14. MIC 
3. External USB 
ports  7. Modem  11. HDD  15. Thermal  
4. Touch Pad  8. Wireless LAN   12. CRT port  16. LAN 
 
The Diagnostics Disk operations are descri bed in Chapter 3.  Detailed replacement 
procedures are given in Chapter 4. 
The following tools are necessary for implementing the troubleshooting procedures: 
1. Diagnostics Disk (Repair and Sound Repair) 
2.  USB memory disk 
3.  Phillips screwdriver (2 mm) 
4.  6mm nut driver (for the helix scre w nuts on the rear ports for CPU door) 
5.  2DD or 2HD formatted work disk for floppy disk drive testing 
6.  Cleaning kit for floppy disk drive troubleshooting 
7.  Cleaning kit for optical drive troubleshooting 
8.  Multimeter 
9.  External monitor 
10.  USB compatible keyboard 
11.  Multimedia sound system with line-in and line-out ports 
12.  Headphones 
13.  USB test module and USB cable 
14.  Music CD 
15.  MIC module and MIC line 
 
 
 
 
 
  
						

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2.2  Troubleshooting Flowchart 
If you know the location of the ma lfunction, turn directly to the appropriate section of this 
chapter. If the problem is unspecified, use  the flowchart in Figure 2-1 as a guide for 
determining which troubleshooting procedures  to execute.  Before performing any 
troubleshooting procedures, verify the following: 
   Ask the user if a password is registered, if  it is, ask him or her to enter the password. 
   Verify with the customer that Toshiba  Windows 7 is installed on the hard disk. 
Operating systems that were not preinsta lled by Toshiba can cause the computer to 
malfunction. 
   Make sure all optional equipment is removed from the computer. 
   Make sure the floppy disk drive, if installe d, is empty. If no FDD module is installed, 
you should use an external FDD  to run the diagnostics tests 
						

							2 Troubleshooting Procedures 
 Satellite L450D/455D, Satellite pr o L450D Series Maintenance Manual 
  
                                                                       
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START
Connect the AC adapter to the DC- IN socket
Is the DC-IN LED on?
Is the Battery LED on?
Turn the Power switch on
Is the Power On LED on?
Is the Toshiba logo messagedisplay?
If the password message
displays, type the password, then press Enter.
Is Toshiba Windows beingloaded?
A
Yes
Yes
Yes
Yes
Yes
Yes
Perform the Power Supply
Troubleshooting procedures in section 2.3
Perform diagnostics
program. Run CM165.EXE
and select the HARD DISK
item.
Perform the Power Supply
Troubleshooting procedures in section 2.3
No
No
No
No
No
Perform the Power Supply
Troubleshooting procedures in section 2.3
Perform the Power Supply
Troubleshooting procedures
in section 2.3
 
Figure 2-1 Troubleshooting flowchart (1/2)  
						

							2 Troubleshooting Procedures 
 Satellite L450D/455D, Satellite pr o L450D Series Maintenance Manual 
  
                                                                       
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A
Does typed characters appear correctly?
Insert USB memory disk.
Then run the diagnostics test program.
Is the diagnostics test loaded?
Allow each test to perform automatically
Is an error detected by any of the
diagnostics tests?
System is normal
End
Yes
Yes
Yes
No
Perform the Keyboard
Troubleshooting procedures in section 2.6
Perform the FDD
Troubleshooting procedures in section 2.5
After confirming which
diagnostics test has detected
an error, perform the
appropriate procedure as
outlined below.
No
No
Yes
 
Figure 2-1 Troubleshooting flowchart (2/2)