Gestetner B070 Service Manual page 323

SC124: Encoder Signal Error
Definition [B]
The scanner motor encoder connector is not set correctly, or the encoder signal
was not input. When the scanner motor encoder connector is not set correctly, or
occasionally even if set correctly, this error is detected if there is no input 4 ms after
scanning begins.
Possible Causes
• 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 ±12V)
• Power supply unit (PSU-E board) defective
SC125: Scanner Motor Error 2
Definition [B]
Scanner motor stopped before feedback from scanner HP sensor detected, or
motor speed too slow when detected at scanner HP sensor.
Possible Causes
• Scanner motor defective (high torque)
• Overload on scanner drive mechanism
• MCU board defective (scanner motor unit control)
SC126: Scanner Motor Error 3
Definition [B]
The scanner motor does not stop within 15 mm after the scanner home position
sensor turns on when the scanner returns.
Possible Causes
• Scanner motor defective (low torque)
• Overload on scanner drive mechanism
• MCU board defective (scanner motor control unit)
SM
CÓPIA NÃO CONTROLADA
4-3
CÓPIA NÃO CONTROLADA
SERVICE CALL CONDITIONS
B070/B071