Gestetner B147 Service Manual page 227

SC No. Item
SC Tray 3 error For the paper feed unit:
503-01
(Paper Feed When the tray lift motor is
Unit or LCT) turned on, if the upper limit is
not detected within 18
seconds, the machine asks the
user to reset the tray. If this
condition occurs three
consecutive times, the SC is
generated.
For the LCT:
This SC is generated under
the following conditions:
• If the upper or lower limit is
• If the paper stack is not
• If the end fence home
SM
Definition
For the paper feed unit:
• Defective tray lift
• Defective lift sensor
For the LCT:
• Defective stack
• Defective tray motor
not detected within 15
seconds when the tray lift
• Defective end fence
motor is turned on to lift up
or lower the tray
transported within a specific
• Defective upper limit
number of pulses after the
tray motor and stack
transport clutch turn on to
• Defective tray lift
transport the paper stack
position sensor stays ON for
a specific number of pulses
after the tray motor and
stack transport clutch turn
on to transport the paper
stack.
Related
Possible Cause
SCs
motor or connector
disconnection
or connector
disconnection
transport clutch or
connector
disconnection
or connector
disconnection
home position sensor
or connector
disconnection
sensor or connector
disconnection
motor or connector
disconnection
4-25
Troubleshooting Procedure
1. Turn the main switch off and on.
2. Check the cable connections.
3. Check and/or replace the defective
component.
SC TABLE
Type
B
B147/B149/B190