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2 Troubleshooting Procedures
PORTEGE M700/M750 Maintenance Manual (960-661) [CONFIDENTIAL] 2-49
Check 1 Make sure the wireless LAN board is firmly connected to CN2600 on the system
board.
If the connector is disconnected, connect it firmly. If the wireless LAN board is
still not functioning properly, perform Check 2.
Check 2 Make sure the wireless LAN antenna cables are firmly connected to the wireless
LAN board.
If the wireless LAN antenna cables are disconnected, connect them firmly. If the
wireless LAN board is still not functioning properly, go to Procedure 3.
Procedure 3 Replacement Check
The wireless LAN antenna, wireless LAN board and the system board are connected to the
circuits. Any of these components may be damaged. Refer to Chapter 4, Replacement
Procedures, for instructions on how to disassemble the computer and then perform the
following checks:
Check 1 The wireless LAN board may be defective or damaged. Replace the board with a
new one following the steps in Chapter 4, Replacement Procedures. If the
problem still exists, perform Check 2.
Check 2 The wireless LAN antenna may be defective or damaged. Replace the antenna
with a new one following the steps in Chapter 4, Replacement Procedures. If the
problem still exists, perform Check 3.
Check 3 The system board may be defective or damaged. Replace the board with a new
one following the instructions in Chapter 4, Replacement Procedures and test the
display again.