Service manual

SC Tables
SM 6-29 D127/D128
Trouble –
shooting
No.
Definition
Symptom Possible Cause/Countermeasure
853 C
Wireless card startup error
The machine starts up. The
IEEE802 11b card connection
board is recognized.
The
wireless LAN card or bluetooth
card is not recognized.
 Loose connection between the
wireless card and the connection
board
854 C
Wireless card access error
The machine has been reading
the data from the card. The
machine loses access to the
card; the wireless LAN card or
bluetooth card connection board
is still recognized.
 Loose connection between the
wireless card and the connection
board
855 C
Wireless card error
Some illegal data is found in the
card.
 Defective wireless card
856 C
Wireless card connection board error
An error is detected in the
wireless LAN card or bluetooth
card connection board.
 Defective wireless card
connection board
857 C
USB I/F Error
USB interface error is detected.
 Defective controller
1. Check the USB connections, and
make sure that they are securely
connected.
2. Replace the controller board.