Toshiba Tecra A3-S711, Руководство по обслуживанию

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2.10 Speaker Troubleshooting 2 Troubleshooting Procedures
Tecra A3/S2 Series Maintenance Manual 2-35
The wireless LAN antenna wire, wireless LAN unit or system board may each be the source of a
wireless LAN fault. Any of these components may be damaged. To determine if the computer’s
wireless LAN system is functioning properly, perform the following procedures. Figure 2-15
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. Refer to
Chapter 3, Tests and Diagnostics for more information on the program.
If an error is located, go to Procedure 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 antenna is firmly connected to the wireless LAN
unit (refer to Chapter 4 for instructions) and that the wireless LAN unit is securely
slotted into the system board. If the problem persists, go to Check 2.
Check 2 Check that the wireless communication switch is turned to “On”, then make sure that
the wireless communication LED on the front panel is lit. If the LED is lit 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 the wireless LAN LED is not lit 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.