Toshiba SATELLITE A200 User Manual

Page 67

2 Troubleshooting Procedures

Satellite A200/A205/Pro A200 Series Maintenance Manual

[CONFIDENTIAL]

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”, and 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.