Gestetner B147 Service Manual page 236

SC TABLE
SC No. Item
SC 691 Scanner startup • After the machine is
error
SC 692 GAPCII2C • The I2C bus device ID is not
communication
error
• A device-status error occurs
• The I2C bus communication
SC 700 ARDF original • After the pick-up motor is
pick-up
malfunction
B147/B149/B190
Definition
• Board connector
powered on or recovering
from the power save mode,
the scanner ready signal is
not verified. • Board connector
• IPU board defective
• Controller board
• Motherboard
• Loose connection
identified during • Defective BCU
initialization.
• Defective LD
during I2C bus
communication.
is not established due to an
error other than a buffer
shortage.
• Original stopper HP
turned on, the original
stopper HP sensor is not • Pick-up motor
activated.
• Timing belt out of
• ARDF main board
Related
Possible Cause
SCs
between controller
and motherboard
loose
between motherboard
and IPU loose
defective
defective
controller board
SC 701
sensor defective
defective (not
rotating)
position
defective
4-34
Troubleshooting Procedure
1. Turn the main switch off and on.
2. Check the cable connection between
controller and motherboard.
3. Check the cable connection between
motherboard and IPU.
4. Replace the IPU board.
5. Replace the controller board.
6. Replace the motherboard.
1. Turn the main switch off and on.
2. Check the cable connection.
3. Replace the BCU.
1. Turn the main switch off and on.
2. Replace the HP sensor.
3. Turn the main switch off and on.
4. Replace the pick-up motor.
5. Replace the control board.
Type
CTL
D
B
SM