dynabook PORTEGE X30W-J, Maintenance Manual

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2 Troubleshooting Procedures
PORTÉGÉ X30W-J, dynabook V*/VZ*/VC* Series Maintenance Manual (960-941) [CONFIDENTIAL]
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2.11 LAN Troubleshooting: Not used
To check if the computer’s LAN is malfunctioning or not, follow the troubleshooting
procedures below as instructed.
Procedure 1: Check on Windows
Procedure 2: Connector Check and Replacement Check
2.11.1 Procedure 1 Check on Windows
To check if the LAN function is working properly, use a function on Windows.
If any error is found, go to Procedure 2.
2.11.2 Procedure 2 Connector Check and Replacement Check
LAN cable is connected to USB board/LTE board. If LAN malfunctions, the connection of the
cable and boards may be defective. Otherwise, they may be faulty.
Check 1 Make sure LAN cable is firmly connected to the LAN jack on the USB board/LTE
board. If the problem still occurs, perform Check 2.
Check 2 LAN cable may be faulty. Replace it with a new one. If the problem still occurs,
perform Check 3.
Check 3 Make sure the USB FPC is firmly connected to the boards following the
instruction in Chapter 4, Replacement Procedure . If the connection is loose,
connect it firmly. If the problem still occurs, go to Check 4
Check 4 USB FPC may be faulty. Replace it with a new one. If the problem still occurs,
perform Check 5.
Check 5 USB board/LTE board may be faulty. Replace it with a new one. If the problem
still occurs, perform Check 6.
Check 6 USB board/LTE board or USB FPC may be faulty. Replace it with a new one. If
the problem still occurs, perform Check 7.
Check 7 System board may be faulty. Replace it with a new one following the instruction in
Chapter 4, Replacement Procedure .