Toshiba Satellite L450 L450d Pro Maintanance Manual
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2 Troubleshooting Procedures Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual 27 Procedure 5 Connection check and replacement check The optical drive connects to the system board. The drive may be disconnected, or the drive or system board may be damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures, and perform the following checks: Check 1 Make sure the drive is firmly connect ed to the system board. If the connection is good and there is still an error, go to Check 2. Check 2 The drive or drive cable may be de fective or damaged. Replace each with a new one following the steps in Chapter 4, Replacement Procedures. If the drive is still not functioning properly, perform Check 3. Check 3 The system board may be damaged. Replace it with new one following the instructions in Chapter 4, Replacement Procedures.
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2 Troubleshooting Procedures Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual 28 2.10 Modem Troubleshooting START Computer unable to detect telephone signal? END Perform connection check (Procedure 2) Perform replacement check (Procedure 3) Perform telephone line connection check (Procedure 1) Check / replace telephone line and connections Yes Replace system board No Figure 2-9 Modem troubleshooting process
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2 Troubleshooting Procedures Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual 29 This section describes how to determine if the computers modem is functioning properly. Figure 2-9 outlines the process. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required. Procedure 1: Telephone line connection check Procedure 2: Modem card connection check Procedure 3: Modem card replacement check Procedure 1 Telephone line connection check The telephone cable may be damaged or the connections may be loose. Attempt to connect the computer to a network through using the mo dem. If the modem does not function at all, go to Procedure 3. If the attempt fails because the computer detects no telephone signal, the fault may be in the telephone cable, the wall socket or the modem port. Perform Check 1: Check 1 Make sure telephone cable is firmly plugged into both the telephone wall socket and the modem port of the computer. If the cable is connected correctly, go to Check 2. Check 2 Make sure the modem port is firmly secured to the system board of the computer. If the malfunction remains, go to Check 3. Check 3 The telephone cable may be damaged. Replace with a good cable. If the malfunction remains, go to Procedure 2. Procedure 2 Modem card connection check Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and ensure that the modem card is well connected to the system board. If the problem persists, perform Procedure 3. Procedure 3 Modem replacement check The modem card or RJ-11 jack may be faulty. Tr y replacing them. If the problem persists, the system board may be defective or damaged. Replace the System Board with a new one following the steps in Chapter 4, Replacement Procedures .
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2 Troubleshooting Procedures Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual 30 2.11 Wireless LAN Troubleshooting START Perform diagnostic test (Procedure 1) Was a wireless LAN problem delected? Perform connector and replacement check (Procedure 2) Replace wireless LAN antenna/unit Replace system board END Yes Wireless LAN system is not faulty. Continue troubleshooting - refer to Figure 2.1 No Figure 2-10 Wireless LAN troubleshooting process The wireless LAN antenna wire, wireless LAN un it or system board may each be the source of a wireless LAN fault. Any of these com ponents may be damaged. To determine if the computer’s wireless LAN system is functioni ng properly, perform the following procedures.
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2 Troubleshooting Procedures Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual 31 Figure 2-10 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 automatically execute the wireless LAN test. Test and Diagnostic for more information on the program. If an error is located, go to Pro cedure 2. If an error is not located, the wireless LAN system is functioning properly. Procedure 2 Connector and replacement check The wireless LAN antenna, wireless LAN unit or system board may be disconnected or damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures , and perform the following checks. Check 1 Make sure that the wireless LAN an tenna is firmly connected to the Wireless LAN module (refer to Chapter 4 for inst ructions) and that the wireless LAN module is securely slotted in to the system board. If the problem persists, go to Check 2. Check 2 Check that the wireless communication switch is turned to “On”, and then make sure that the wireless communication LED on the front panel is light. If the LED is light but the wireless LAN function is still faulty, the antenna may be damaged. Replace with a new antenna following the steps in Chapter 4, Replacement Procedures . If the problem persists, or if th e wireless LAN LED is not light when the wireless communication switch is turned to “On”, go to Check 3. Check 3 The wireless LAN unit may be damaged. Replace it with a new one following the instructions in Chapter 4. If the problem still exists, perform Check 4. Check 4 The system board may be damaged. Replace it with a new one following the instructions in Chapter 4.
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2 Troubleshooting Procedures Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual 32 2.12 Camera Troubleshooting Figure 2-11 Camera troubleshooting process
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2 Troubleshooting Procedures Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual 33 The Camera board or system board may be the reason of a Camera fault. Either of these two components may be damaged. To determine if the computer’s Camera is functioning properly, perform the following procedures. Fi gure 2-11 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 functioning Program in windows, wh ich will display the Camera test result. If tests and diagnostics result abnormal go to Procedure 2. If an error is not located, the Camera system is functioning properly. Procedure 2 Connector and replacement check The Camera board or system board may be disconnected or damaged. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures, and perform the following checks. Check 1 Make sure that the Camera board FFC is securely slotted into the system board. If the problem persists, go to Check 2. Check 2 The Camera board may be damaged. Replace it with a new one following the instructions in Chapter 4. If the problem still exists, perform Check 3. Check 3 The system board may be damaged. Replace it with a new one following the instructions in Chapter 4.
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2 Troubleshooting Procedures Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual 34 2.13 3 in 1 card Troubleshooting START Do errors occur during 3 IN 1 CARD test? Perform 3 IN 1 card socket replacement check (Procedure 2) Replace system board END 3 IN 1 unit is not faulty. Perform 3 in 1 CARD test (Procedure 1) No Yes Figure 2-12 3in 1 card troubleshooting process This section describes how to determine if the Bridge media assemble card player is functioning properly. The process is summarized in Figure 2-12. Perform the steps below starting with Procedure 1 and continuing with the other procedures as required.
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2 Troubleshooting Procedures Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual 35 Procedure 1: Bridge media assemble card test Procedure 2: Express socket replacement check Procedure 1 Bridge media assemble card test The Bridge media assemble card test card c ontains a Bridge media assemble card test program. Ensure the card in fully inserted into the socket before running the program. If an error occurs during the Bridge media a ssemble card test, perform Procedure 2. If no error occurs, it is likely that the original Bridge media assemble card was faulty. Procedure 2 Bridge media assemble card socket replacement check The Bridge media assemble card socket may be damaged or defective, fo r instance the socket pins can be bent. Disassemble the computer following the steps described in Chapter 4, Replacement Procedures If the problem persis ts, the system board may be defective or damaged. Replace the system board with a new one following the steps in Chapter 4.
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2 Troubleshooting Procedures Satellite L450D/455D, Satellite pro L450D Series Maintenance Manual 36 2.14 HDD Troubleshooting Figure 2-13 HDD troubleshooting process The HDD or system board may be the reason of a HDD fault. Either of these two components may be damaged. To determine if the comput er’s HDD is functioning properly, perform the