F80 Double Feed Detector Error • Remove any dust on the Supersonic Receiver on the WAITING LED Board, or on
Supersonic Generator on the WAITING SENSOR Board
• Check that the Supersonic Receiver on the WAITING LED Board,Supersonic
Generator on the WAITING SENSOR Board
• Check the WAITING LED Board Cable
• Check the RELAY ( LOWER ) Board Cable
• Check the Waiting Sensor Cable
• Check the RELAY ( UPPER ) BoardCable
• Replace the WAITING LED Board
• Replace the WAITING SENSOR Board
• Replace RELAY ( LOWER ) Board
• Replace RELAY ( UPPER ) Board
• Replace the MOTHER Board
• Replacethe MAIN CONTROL Board
• Check the Starting Position Sensor Cable
• Replace the STARTING POSITION SENSOR Board
Note:
If neither LCD indication nor memory accessed from CPU work properly when initializing, LED6 to LED1 (
D106 - D101 ) status can be available for troubleshooting.
Scanner CPU checks attached ROM and RAM on main control and on SCSI I/F board after power ON. It
displays 6 red LED patterns on main board according to progress of checking. All LED OFF means main
board check is finished normally. If some errorsare detected, some LED remains to light.
Main Board LED display
: Lighting, : Not Lighting
LED 6 5 4 3 2 1
Error Detail Check Point
LCD No
Response
Error
Replace MAIN Control
Board
Flash-ROM
check Error
Replace MAIN Control
Board
SRAM check
Error
Replace MAIN Control
Board
Internal
SRAM (
Inside of CPU
) check Error
Replace MAIN Control
Board
GA_SENSOR
shading check
Error
Replace MAIN Control
Board
GA_SENSOR
line
correction
RAM check
Error
Replace MAIN Control
Board
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