Ricoh B234 - Page 434

SERVICE CALL CONDITIONS
B234/B235/B236/D101/D102/D103 4-14 SM
Encoder Signal Error
SC124 B
The scanner motor encoder
connector is not set correctly, or
the encoder signal was not
input.
• Scanner motor encoder connector
disconnected
• Scanner motor lead connector
disconnected
• Scanner motor defective
• MCU board defective (scanner motor
control unit)
• Scanner wire, timing belt, pulleys, or
carriage installation incorrect
• Power supply connector disconnected
(+38V ±24V)
• Power supply unit (PSU-E board)
defective
Scanner Motor Error 1
SC125 B
Scanner motor stopped before
feedback from scanner HP
sensor detected, or motor speed
too slow when detected at
scanner HP sensor.
• Scanner motor defective (high torque)
• Overload on scanner drive mechanism
• MCU board defective (scanner motor unit
control)
Scanner Motor Error 2
SC126 B
The scanner motor does not
stop within 15 mm after the
scanner home position sensor
turns on when the scanner
returns.
• Scanner motor defective (low torque)
• Overload on scanner drive mechanism
• MCU board defective (scanner motor
control unit)
Scanner Motor Error 3
SC127 B
The scanner motor rotates in the
opposite direction to the signal
from the MCU board.
• Scanner motor defective (motor lead
connected incorrectly)
• MCU board defective (scanner motor
control unit)
Scanner Motor Error 4
SC128 C
The scanner motor speed does
not reach the target speed by
the time the scanning start point
is reached.
• Scanner motor defective
• Overload on scanner mechanism
• PSU-Eb board defective
• MCU board defective (scanner motor
control unit)