Antennas' Connection Check - Toshiba Satellite L640 Maintenance Manual

Chapter 2 Troubleshooting Procedures
Procedure 2
The wireless LAN function-wiring diagram is shown below:
WLAN ATTENNA
(BLAC K)
WLAN ATTENNA
(WHITE)
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 the wireless communication switch is "On".
If the switch is "Off", turn it "On". If the problem still occurs, perform Check 2.
Check 2 Make sure wireless LAN card (Mini-PCI) is firmly connected to the CN16 on
system board. If the connector is defective, connect it firmly and perform
Procedure 1. If the problem still occurs, perform Check 3.
Check 3 Make sure that wireless LAN antenna cables (black and white) are firmly
connected to the connectors on Wireless LAN card. If wireless LAN antenna
cables are not connected properly, connect them firmly and perform Procedure 1.
If the problem still occurs, go to the procedure 3.
Satellite L600/L640/L645, Satellite Pro L600/Pro L640/Pro L645 Maintenance Manual (960-Q08)

Antennas' Connection Check

MINI-PCI
WLAN CARD
AUX
MAIN
CN16
System Board