• Replace the MAINCONTROL Board
F55 Ending ( Front ) Position Sensor Error • Remove any dust on the LED on the ENDING (FRONT) LED Board, or on the
light receptor on the ENDING (FRONT) SENSOR Board
• Check that the LED on the ENDING (FRONT) LED Board, the lightreceptor on
the ENDING (FRONT) SENSOR Board and the slot location on the carrier board
are properly aligned
• Check the ENDING (FRONT) LED Board Cable
• Check the Paper Jam Sensor Cable
• Check the Ending(Front) Sensor Cable
• Replace the RELAY ( UPPER ) Board Cable
• Replace the ENDING (FRONT) LED Board
• Replace the PAPER JAM SENSOR Board
• Replace the ENDING (FRONT) SENSOR Board
• Replacethe RELAY ( UPPER ) Board
• Replace the MOTHER Board
• Replace the MAIN CONTROL Board
F56 Ending ( Rear ) Position Sensor Error • Remove any dust on the LED on the ENDING (REAR) LED Board, or on the light
receptor on the ENDING (REAR) POSITION SENSOR Board
• Check that the LED on the ENDING (REAR) LED Board,the light receptor on the
ENDING (REAR) SENSOR Board and the slot location on the carrier board are
properly aligned
• Check the ENDING (REAR) LED Board Cable
• Check the STARTING POSITION LED Board Cable
• Checkthe RELAY ( LOWER ) Board Cable
• Check the Ending (REAR) Sensor Cable
• Check the POINTER DETECTOR Board Cable
• Replace the ENDING (REAR) LED Board
• Replace the STARTING POSITION LED Board
• Replacethe ENDING (REAR) SENSOR Board
• Replace the POINTER Board
• Replace the RELAY ( LOWER ) Board
• Replace the MOTHER Board
• Replace the MAIN CONTROL Board
F61 Front Side Black Level Error • Check the CIS ( F ) Cable
• Replace the Front Side Image Sensor
• Replace the MAIN CONTROL Board
F63 Back Side Black Level Error • Check the CIS ( B ) Cable
• Replace the Back Side Image Sensor
• Replace the MAIN CONTROL Board
F68 Front Side Lamp Lighting Error • Check the CIS ( F ) Cable
• Check the CIS ( F ) LED Cable
• Replace the Front Side Image Sensor
• Replace the DRIVE Board
• Replace theMOTHER Board
• Replace the MAIN CONTROL Board
F69 Back Side Lamp Lighting Error • Check the CIS ( B ) Cable
• Check the CIS ( B ) LED Cable
• Replace the Back Side Image Sensor
• Replace the DRIVE Board
• Replace theMOTHER Board
• Replace the MAIN CONTROL Board
F70 Size Detector Error • Check the Hopper Extension Tray Rack
• Check the SIZE DETECTOR Board Cable
• Check the HOPPER POSITION Board Cable
• Check the RELAY ( LOWER ) Board Cable
• Replacethe SIZE DETECTOR Board
• Replace the HOPPER POSITION Board
• Replace RELAY ( LOWER ) Board
• Replace the MOTHER Board
• Replace the MAIN CONTROL Board