Toshiba Satellite L450 L450d Pro Maintanance Manual
Here you can view all the pages of manual Toshiba Satellite L450 L450d Pro Maintanance Manual. The Toshiba manuals for Notebook are available online for free. You can easily download all the documents as PDF.
Page 71
2 Troubleshooting Procedures
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
37
following procedures. Figure 2-13 outlines the process. Start with Procedure 1 and continue
with the other procedures as instructed.
Procedure 1: Diagnostic test
Procedure 2: Connector and replacement check
Procedure 1 Diagnostic test
Run the Diagnostic Program, which will automa tically execute the HDD R/W test. Refer to...
Page 72
2 Troubleshooting Procedures
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
38
2.15 CRT Troubleshooting
Perform C R T connection
check
(Procedure 1)
ST A R T
Does replacement CRT cable
function properly?
Perf o rm C R T set ch eck (Procedure 2)
R eplace sy stem board
EN D
YesReplace CRT
cable
No
C R T functioning ok ?
NO
U se different CRT setYes
Check CRT Port
connection
Figure...
Page 73
2 Troubleshooting Procedures
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
39
Procedure 2: CRT set check
Procedure 1 CRT connection check
The CRT cable may be damaged or the conne ctions may be loose. Perform Check 1:
Check 1 Make sure CRT cable is firmly pl ugged into both the CRT set and the CRT port
of the computer. If the cable is connected correctly, go to Check 2.
Check 2 Make sure the CRT...
Page 74
2 Troubleshooting Procedures
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
40
2.16 HDMI Troubleshooting
Perform H D M I connection
check
(P rocedu re 1 )
STA RT
D oes replacem ent H D M I cable
function properly?
Perform H D M I set check (P rocedu re 2 )
R eplace system board
END
YesR eplace H D M I
cable
No
H D M I functioning ok?
No
U se differen tHDM I setYes
Figure 2-15 HDMI troubleshooting...
Page 75
2 Troubleshooting Procedures
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
41
Procedure 1: HDMI connection check
Procedure 2: HDMI set check
Procedure 1 HDMI connection check
The CRT cable may be damaged or the conne ctions may be loose. Perform Check 1:
Check 1 Make sure HDMI cable is firmly pl ugged into both the CRT set and the CRT port
of the computer. If the cable is connected correctly, go to...
Page 76
2 Troubleshooting Procedures
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
42
2.17 MIC Troubleshooting
Figure 2-16 MIC troubleshooting process
The MIC line or system board may be the re ason of a MIC fault. Either of these two
components may be damaged. To determine if the computer’s MIC is functioning properly,
perform the following procedures. Figure 2-16 outlines the process. Start with Procedure...
Page 77
2 Troubleshooting Procedures
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
43
Procedure 1: Diagnostic test
Procedure 2: Connector and replacement check
Procedure 1 Diagnostic test
Run the functioning Program on Windows model, which will display the MIC test result.
If tests and diagnostics result abnormal go to Pr ocedure 2. If an error is not located, the MIC
module functioning is properly....
Page 78
2 Troubleshooting Procedures
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
44
2.18 Thermal Module troubleshooting
START
END
CPU replacement check
(Procedure 1)
Thermal module
replacement check
(Procedure 2)
Replace system board
Figure 2-17 Thermal Module troubleshooting process
To determine if the computer’s built-in Ther mal Module is functioning properly,...
Page 79
2 Troubleshooting Procedures
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
45
Procedure 1 CPU replacement check
Refer to Chapter 4,
Replacement Procedures, for instructions on how to disassemble the
computer and then perform the following checks.
If there is still an error after replacement CPU, go to Procedure 2.
Procedure 2 Thermal Module replacement check
Refer to Chapter 4, Replacement...
Page 80
2 Troubleshooting Procedures
Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual
46
2.19 LAN troubleshooting
Perform LAN cable
connection check (P ro c e d u re 1 )
STA R T
D oes replacem ent LAN cable
fu n c tio n p ro p e rly ?
P erform L A N port check (P ro c e d u re 2 )
R eplace system board
EN D
NoR eplace L A Ncable
Yes
L A N port functioning ok?
Yes
U se...