dynabook TECRA A40-J Series Maintenance Manual

Maintenance Manual (960-945) 2-18
Troubleshooting Procedures
Any of the connections may be defective. Disassemble the computer
following the steps described in Chapter 4, Replacement Procedures, and
perform the following checks:
Check 1
Make sure Wireless LAN/Bluetooth Combo module is firmly
connected to the CN2630 on the system board. If the connection
is loose, connect it firmly and perform Procedure 1. If the
problem still occurs, perform Check 2.
Check 2
Make sure that antenna cables for wireless function (black and
white) are firmly connected to the connectors on the module. If
the cables are not connected properly, connect them firmly and
perform Procedure 1. If the problem still occurs, go to the
Procedure 3.
2.10.3 Procedure 3 Replacement Check
Wireless LAN/Bluetooth module, antenna for wireless function or system
board may be faulty. Refer to Chapter 4, Replacement Procedures, for
instructions on how to disassemble the computer and then perform the
following checks:
Check 1
Wireless LAN/Bluetooth Combo module may be faulty. Replace
it with a new one following the instructions in Chapter 4,
Replacement Procedures. If the problem still occurs, perform
Check 2.
Check 2
The antennas for wireless function may be faulty. Replace them
with new ones following the instructions in Chapter 4,
Replacement Procedures. If the problem still occurs, perform
Check 3.
Check3
System board may be faulty. Replace it with a new one following
the instructions in Chapter 4, Replacement Procedures.
<System board>
CN2630
black
white
AUX
MAIN
Antennas
antenna cable
WLAN/BT module

dynabook TECRA A40-J Series Specifications

General

Brand	dynabook
Model	TECRA A40-J Series
Category	Laptop
Language	English