F51 Starting Position Sensor Error • Remove any dust on the LED on the STARTING POSITION LED Board, or on the
light receptor on the STARTING POSITION SENSOR Board
• Check that the LED on the STARTING POSITION LED Board,the light receptor
on the STARTING POSITION SENSOR Board and the slot location on the carrier
board are properly aligned
• Check the STARTING POSITION LED Board Cable
• Check the RELAY ( LOWER ) Board Cable
• Checkthe Starting Position Sensor Cable
• Check the RELAY ( UPPER ) Board Cable
• Replace the STARTING POSITION LED Board
• Replace the STARTING POSITION SENSOR Board
• Replace the RELAY ( LOWER) Board
• Replace the RELAY ( UPPER ) Board
• Replace the MOTHER Board
• Replace the MAIN CONTROL Board
F52 Skew ( R ) Sensor Error • Remove any dust on the LED on the WAITING LED Board, or on the light
receptor on the WAITING SENSOR Board
• Check that the LED on the WAITING LED Board, the light receptor on the
WAITINGSENSOR Board and the slot location on the carrier board are properly
aligned
• Check the WAITING LED Board Cable
• Check the RELAY ( LOWER ) Board Cable
• Check the Waiting Sensor Cable
• Checkthe RELAY ( UPPER ) Board Cable
• Replace the WAITING LED Board
• Replace the WAITING SENSOR Board
• Replace the RELAY ( LOWER ) Board
• Replace the RELAY ( UPPER ) Board
• Replacethe MOTHER Board
• Replace the MAIN CONTROL Board
• Check the Starting Position Sensor Cable
• Replace the STARTING POSITION SENSOR Board
F53 Skew ( L ) Sensor Error • Remove any dust on the LED on the WAITING LED Board, or on the light
receptor on the WAITING SENSOR Board
• Check that the LED on the WAITING LED Board, the light receptor on the
WAITINGSENSOR Board and the slot location on the carrier board are properly
aligned
• Check the WAITING LED Board Cable
• Check the RELAY ( LOWER ) Board Cable
• Check the Waiting Sensor Cable
• Checkthe RELAY ( UPPER ) Board Cable
• Replace the WAITING LED Board
• Replace the WAITING SENSOR Board
• Replace the RELAY ( LOWER ) Board
• Replace the RELAY ( UPPER ) Board
• Replacethe MOTHER Board
• Replace the MAIN CONTROL Board
• Check the Starting Position Sensor Cable
• Replace the STARTING POSITION SENSOR Board
F54 Paper Jam Sensor Error • Remove any dust on the LED on the PAPER JAM LED Board, or on the light
receptor on the PAPER JAM SENSOR Board
• Check that the LED on the PAPER JAM LED Board, the light receptor onthe
PAPER JAM SENSOR Board and the slot location on the carrier board are properly
aligned
• Check the PAPER JAM LED Board Cable
• Check the RELAY ( LOWER ) Board Cable
• Check the Paper Jam Sensor Cable
• Checkthe RELAY ( UPPER ) Board
• Replace the ENDING (REAR) SENSOR Board Cable
• Replace the POINTER Board Cable
• Replace the PAPER JAM LED Board
• Replace the ENDING (REAR) SENSOR Board
• Replacethe POINTER Board
• Replace the PAPER JAM SENSOR Board
• Replace the RELAY ( LOWER ) Board
• Replace the RELAY ( UPPER ) Board
• Replace the MOTHER Board
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