Toshiba e-STUDIO 2555C Service Manual page 719

Check item
Front alignment motor (M5)
Parts to be replaced
Front alignment motor (M5)
Finisher controller PC board
[CB50] Staple motor (M10) abnormality
MJ-1036
Error
Stapler motor (M10)
Staple unit clinching home position
sensor (S16)
Probable cause
Staple motor (M10) abnormality
Staple unit clinching home position
sensor (S16) abnormality
Staple unit improper clinching
prevention sensor (S15)
abnormality
Faulty cables and connectors
Finisher control PC board (FIN)
abnormality
[CB50] Stapler home position error
* You receive a [CB50] error when the [EA50] error occurs three times in succession.
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Measures
Check the connectors and harnesses between the front alignment
motor (M5) and the finisher control PC board (CN10).
Remark
The staple unit clinching home position sensor (S16) does not
detect the opening of the staple unit after the stapler motor
(M10) has been driven reversely in the specified time from the
closing during the initial movement of the staple unit.
The staple unit clinching home position sensor (S16) does not
detect the opening of the staple unit in the specified time from
the closing during the clinching movement of the staple unit,
and also this sensor does not detect the opening by the reverse
rotation of the motor after the stapler is stopped.
The staple unit clinching home position sensor (S16) does not
detect the closing of the staple unit after the specified time
during the clinching movement of the staple unit.
The staple unit clinching home position sensor (S16) does not
detect the opening of the staple unit at the start of the clinching.
Checking and measures
Check if the electrical continuity of the coil is normal. If
electricity is not conducted, replace the staple unit.
Measure the voltage on CN16 on the finisher control PC board
(FIN). Then check that the measured voltage is 1V or lower
when the sensor is ON and within the range of 3.3V
± 5% when OFF. If the voltage does not fall within the range
mentioned, replace the staple unit.
Measure the voltage on TP25 on the finisher control PC board
(FIN). Then check that the measured voltage is 1V or lower
when not shielded and within the range of 3.3V
± 5% when shielded. If the voltage does not fall within the range
mentioned, replace the sensor.
Check if the electrical continuity between the connector
terminals is normal. If electricity is not conducted, replace the
connectors. (Finisher control PC board (FIN): CN16, CN17)
If the error still occurs after replacing the motor, sensors, switch
and connectors, exchange the finisher control PC board (FIN).
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Timing of detection
e-STUDIO2555C/3055C/3555C/4555C/5055C
ERROR CODE AND TROUBLESHOOTING
8