Gestetner G056 Service Manual page 231

SERVICE CALL CONDITIONS
SC Level
838 B Self-diagnostic error - Clock generator
Controller clock generator
error detected during self-
diagnostic.
850 B NIB interface error
NIB interface error
detected.
851 B IEEE1394 interface error
IEEE1394 interface error
detected.
853 B IEEE802.11b error - card not detected (power-on)
Wireless LAN card not
detected at power-on.
854 B IEEE802.11b error - card not detected (during operation)
Wireless LAN card not
detected during operation.
855 B IEEE802.11b error
Wireless LAN card error
detected.
856 B IEEE802.11b interface board error
Wireless LAN interface
board error detected.
857 B USB I/F Error
USB interface error
detected.
860 B HDD start-up error
HDD initialization error
detected.
G073/G074
Symptom
4-4
Possible Cause/Required Action
• Defective controller
Replace the controller.
• Defective controller
Replace the controller.
• Defective controller
Replace the controller.
• Poor connection
• Defective wireless LAN card
• Defective controller
1. Check the wireless LAN card connection.
2. Replace the wireless LAN card.
• Poor connection
• Defective wireless LAN card
• Defective controller
1. Check the wireless LAN card connection.
2. Replace the wireless LAN card.
• Poor connection
• Defective wireless LAN card
• Defective controller
1. Check the wireless LAN card connection.
2. Replace the wireless LAN card.
• Poor connection
• Defective wireless LAN interface board
1. Check the wireless LAN interface board
connection.
2. Replace the interface board.
•
Defective controller
1. Check the USB connections, make sure
that they are securely connected.
2. Replace the controller board.
• Defective HDD
1. Check the HDD connection.
2. Reformat the HDD.
3. Replace the HDD.
SM