• Code: C0904
• Description: 3rd Drawer Lift-Up Motor malfunction
• Remedy: 1 3rd Drawer Lift-Up Motor turns when the 3rd Drawer is slid out and then back in NO Correct drive coupling. 2 3rd Drawer Lift-Up Motor operation: the voltage across PJ10A-3 on the Master Board and GND is DC0V (motor deenergized) and DC24V (motor energized) after the 3rd Drawer has been slid in position. YES Change motor. NO Change Master Board. 3 3rd Drawer Lift-Up Motor Pulse Sensor operation: the voltage across PJ8A-5B on the Master Board and GND varies in the range between DC0V and DC5V while the 3rd Drawer Lift-Up is energized. YES Change Master Board. NO Change pulse disk and gear. Change sensor. 4 3rd Drawer Lift-Up Sensor operation: the voltage across PJ8A-12B on the Master Board and GND is DC5V (sensor unblocked) and DC0V (sensor blocked). YES Change Master Board. NO Correct retraction mechanism. Change sensor.

• Code: C0950
• Description: 4th Drawer Lift-Up Sensor malfunction
• Remedy: 1 4th Drawer Lift-Up Motor turns when the 4th Drawer is slid out and then back in NO Correct drive coupling. 2 4th Drawer Lift-Up Motor operation: the voltage across PJ10A-1 on the Master Board and GND is DC0V (motor deenergized) and DC24V (motor energized) after the 4th Drawer has been slid in position. YES Change motor. NO Change Master Board. 3 4th Drawer Lift-Up Motor Pulse Sensor operation: the voltage across PJ9A-9 on the Master Board and GND varies in the range between DC0V and DC5V while the 4th Drawer Lift-Up Motor is energized. YES Change Master Board. NO Change pulse disk and gear. Change sensor. 4 4th Drawer Lift-Up Sensor operation: the voltage across PJ9A-2 on the Master Board and GND is DC5V (sensor unblocked) and DC0V (sensor blocked). YES Change Master Board. NO Correct retraction mechanism. Change sensor.

• Code: C0954
• Description: 4th Drawer Lift-Up Motor malfunction
• Remedy: 1 4th Drawer Lift-Up Motor turns when the 4th Drawer is slid out and then back in NO Correct drive coupling. 2 4th Drawer Lift-Up Motor operation: the voltage across PJ10A-1 on the Master Board and GND is DC0V (motor deenergized) and DC24V (motor energized) after the 4th Drawer has been slid in position. YES Change motor. NO Change Master Board. 3 4th Drawer Lift-Up Motor Pulse Sensor operation: the voltage across PJ9A-9 on the Master Board and GND varies in the range between DC0V and DC5V while the 4th Drawer Lift-Up Motor is energized. YES Change Master Board. NO Change pulse disk and gear. Change sensor. 4 4th Drawer Lift-Up Sensor operation: the voltage across PJ9A-2 on the Master Board and GND is DC5V (sensor unblocked) and DC0V (sensor blocked). YES Change Master Board. NO Correct retraction mechanism. Change sensor.

• Code: C0990
• Description: Main Tray upward motion failure
• Remedy: 1 3rd Drawer Lift-Up Sensor operation: the voltage across PJ8A-12B on the Master Board and GND is DC5V (sensor unblocked) and DC0V (sensor blocked). YES Change Master Board. NO Correct retraction mechanism. Change sensor.

• Code: C0991
• Description: Main Tray downward motion failure
• Remedy: 1 3rd Drawer Lift-Up Sensor operation: the voltage across PJ8A-12B on the Master Board and GND is DC5V (sensor unblocked) and DC0V (sensor blocked). YES Change Master Board. NO Correct retraction mechanism. Change sensor.

• Code: C0992
• Description: Main Tray downward motion failure
• Remedy: 1 Lower Limit Position Sensor operation: the voltage across PJ3A-6 on the Master Board and GND is DC5V (sensor unblocked) and DC0V (sensor blocked). YES Change Master Board. NO Change sensor, Cabinet Transport Board, and flat cable. 2 Main Tray Lower Position Sensor operation: the voltage across PJ3A-3 on the Master Board and GND is DC5V (sensor unblocked) and DC0V (sensor blocked). YES Change Master Board. NO Change sensor, Cabinet Transport Board, and flat cable.

• Code: C0993
• Description: Main Tray upward motion failure
• Remedy: 1 Lower Limit Position Sensor operation: the voltage across PJ3A-6 on the Master Board and GND is DC5V (sensor unblocked) and DC0V (sensor blocked). YES Change Master Board. NO Change sensor, Cabinet Transport Board, and flat cable. 2 Main Tray Lower Position Sensor operation: the voltage across PJ3A-3 on the Master Board and GND is DC5V (sensor unblocked) and DC0V (sensor blocked). YES Change Master Board. NO Change sensor, Cabinet Transport Board, and flat cable.

• Code: C0994
• Description: Elevator Motor’s failure to turn
• Remedy: 1 Elevator Motor turns when the Paper Descent key is pressed NO Correct drive coupling. 2 Elevator Motor operation: the voltage across PJ10A-1 (descent)/PJ10A-2 (ascent) on the Master Board and GND is DC0V (motor deenergized) and DC24V (motor energized) when the tray is slid in or the Paper Descent key is pressed. YES Change motor, Cabinet Transport Board, and flat cable. NO Change Master Board. 3 Elevator Motor Pulse Sensor operation: the voltage across PJ9A-5 on the Master Board and GND varies in the range between DC0V and DC5V while the Elevator Motor is energized. YES Change Master Board. NO Change pulse disk and gear. Change sensor.