Ricoh MP C2004/C2504 Service Manual Part 16

[John]

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC521-01	C	Duplex Entrance Motor: Lock
SC521-02	C	Duplex Bypass Motor: Lock
		During motor ON, after checking the motor error notification registers (err_velo and err_posi) for 0.5 sec, the error state of either register was detected at least 5 times.
Motor defective Connector disconnected Harness broken IOB defective Encoder defective
Replace the motor. Reset the connector. Replace the harness. Replace the paper transport IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC522-00	C	Paper Exit Motor: Lock
During motor ON, after checking the motor error notification registers (err_velo and err_posi) for 0.5 sec, the error state of either register was detected at least 5 times.
Motor defective Connector disconnected Harness broken IOB defective Encoder defective
Replace the motor. Reset the connector. Replace the harness. Replace the paper transport IOB.

6.7.2 SC500 (ENGINE: FUSING)​

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC530-00	D	Fusing Exhaust Fan Lock
In the motor ON state, the value of the lock sensor is checked every 0.1 sec. If a lock signal is not obtained for 50 times consecutively.
Motor defective Connector disconnected Harness broken IOB defective
Replace the fusing exhaust fan. Reconnect the connector. Replace the harness. Replace the paper transport IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC531-01	D	Development Intake Fan/Right Lock
SC531-03	D	Drive Cooling Fan Lock
		In the motor ON state, the value of the lock sensor is checked every 0.1 sec. If a lock signal is not obtained for 50 times consecutively.
Motor defective Connector disconnected Harness broken IOB defective
Replace the development intake fan/right for SC531-01, or drive cooling fan for SC531-03. Reconnect the connector. Replace the harness. Replace the imaging IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC533-03	D	PSU Cooling Fan Lock
SC533-04	D	Controller Box Cooling Fan Lock
		In the motor ON state, the value of the lock sensor is checked every 0.1 sec. If a lock signal is not obtained for 50 times consecutively.
Motor defective Connector disconnected Harness broken IOB defective
Replace the PSU exhaust fan for SC533-01, PSU cooling fan for SC533-04 or controller box cooling fan for Reconnect the connector. Replace the harness. Replace the paper transport IOB (for SC533-01, -03). Replace the imaging IOB (for SC533-04). SC533-04.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC534-01	D	Main Exhaust Fan Lock
SC534-02	D	Toner Supply Cooling Fan Lock
SC534-03	D	Ozone Exhaust Fan Lock
		In the motor ON state, the value of the lock sensor is checked every 0.1 sec. If a lock signal is not obtained for 50 times consecutively.
Motor defective Connector disconnected Harness broken IOB defective

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Replace the development intake fan/right for SC534-01, or drive cooling fan for SC534-03. Reconnect the connector. Replace the harness. Replace the imaging IOB (SC534-01, -02). Replace the paper transport IOB (for SC534-03).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC535-00	D	Paper Exit Cooling Fan Lock
In the motor ON state, the value of the lock sensor is checked every 0.1 sec. If a lock signal is not obtained for 50 times consecutively.
Motor defective Connector disconnected Harness broken IOB defective
Replace the paper exit cooling fan. Reconnect the connector. Replace the harness. Replace the imaging IOB.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC540-00	D	Fusing Motor: Lock
Motor status is observed at 0.1 sec intervals during motor ON, and the unlock status is detected at least 20 times.
Motor defective Connector disconnected Harness broken IOB defective Unit torque increased
Replace the fusing motor. Reconnect the connector. Replace the harness. Replace the paper transport IOB.

Fusing Sleeve (Center) Error (SC54*-**)​

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC541-01	A	Thermopile (Center) Disconnection
Below -50 degrees C (or below CB) is detected for 0.1 sec continuously.
Thermopile disconnection Connector disconnected Harness disconnection between the fusing unit and the BCU BCU defective
Reconnect the connectors (main machine side, BCU side). Replace the thermopile (center). Replace the harness between the fusing unit and the BCU. Replace the BCU.
SC541-02	A	Non-contact Thermistor (Center) Disconnection
Above 3F6 is detected for 1 sec. continuously (NC sensor center: detection & compensation NC sensor edge: detection & compensation). Detection period: 0.1 sec, detection frequency: 10 times or more.
Non-contact thermistor disconnection Connector disconnected Harness disconnection in the fusing unit Harness disconnection between the fusing unit and the BCU BCU defective
Reconnect the connectors (between the fusing unit and the BCU). Replace the non-contact thermistor with the harness. Replace the fusing unit. Replace the harness between the fusing unit and the BCU. Replace the BCU.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC541-03	A	Non-contact Thermistor (Center) short-circuit
Below AD value: 8 is detected for 1 sec. continuously. Detection period: 0.1 sec, detection frequency: 10 times or more.
Non-contact thermistor short-circuit Connector disconnected Harness disconnection in the fusing unit Harness disconnection between the fusing unit and the BCU BCU defective
Reconnect the connectors (between the fusing unit and the BCU). Replace the non-contact thermistor with the harness. Replace the fusing unit. Replace the harness between the fusing unit and the BCU. Replace the BCU.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC542-02	A	Thermopile (Center) does not reload
65 degrees C not reached after fusing lamp 1 ON for 10 sec continuously.
SC542-03	A	Thermopile (Center) does not reload
Heating central reload permission temperature not reached after fusing lamp 1 ON for 35 sec continuously.
SC542-05	D	Thermopile (Center) does not reload (Low Power)
65 degrees C not reached after fusing lamp 1 ON for 10 sec continuously.
SC542-06	D	Thermopile (Center) does not reload (Low Power)
Heating central reload permission temperature not reached after fusing lamp 1 ON for 35 sec continuously.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Outside input voltage guarantee Jammed paper between the thermopile and fusing unit Thermopile lens dirt Thermopile modification/float After excessive temperature rise prevention unit operation Fusing lamp disconnection Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) BCU defective AC controller board defective
Check the power supply voltage and reconnect the cable to the outlet. Remove the jammed paper between the thermopile and fusing unit. Clean or replace the thermopile (center). Replace the fusing sleeve thermostat Replace the fusing sleeve belt unit. Reconnect or replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board).

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC543-00	A	Thermopile (Center) high temperature detection (software)
Above 240 degrees C detected for 1 sec continuously. Detection period: 0.1 sec, detection count: 10 times or more.
Fusing sleeve belt defective Paper setting misdetection Incorrect paper position in the paper feed tray Gear abrasion Thermopile failure Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Triac defective (short-circuit) BCU failure AC controller board failure
Inspect the fusing sleeve belt unit, and replace if damaged. Check the paper settings. Check the paper position in the paper feed tray. Reconnect the connectors (main machine side, BCU side). Inspect or replace the gears in the fusing unit or main machine. Replace the thermopile (center). Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board). If the problem cannot be solved after performing the above steps, replace the fusing unit.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC544-01	A	Thermopile (Center) high temperature detection (hardware)
In the event of an error
Fusing sleeve belt defective Paper setting misdetection Incorrect paper position in the paper feed tray Gear abrasion Pressure roller HP sensor disconnected Thermopile failure Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Triac defective (short-circuit) BCU failure AC controller board failure
Inspect the fusing sleeve belt unit, and replace if damaged. Check the paper settings. Check the paper position in the paper feed tray. Reconnect the connectors (main machine side, BCU side). Inspect or replace the gears in the fusing unit or main machine. Inspect the pressure roller HP sensor with SP5-803-047. Replace the thermopile (center). Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board). If the problem cannot be solved after performing the above steps, replace the fusing unit.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC544-02	A	Non-contact Thermistor (Center) high temperature detection (hardware)
In the event of an error
Fusing sleeve belt defective Paper setting misdetection Incorrect paper position in the paper feed tray Jammed paper between the thermopile and fusing unit Thermopile lens dirt Thermopile modification/float Pressure roller HP sensor disconnected Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Triac defective (short-circuit) BCU failure AC controller board failure
Inspect the fusing sleeve belt unit, and replace if damaged. Check the paper settings. Check the paper position in the paper feed tray. Reconnect the connectors (main machine side, BCU side). Remove the jammed paper between the thermopile and fusing unit. Clean or replace the thermopile (center). Replace the fusing unit. Inspect the pressure roller HP sensor with SP5-803-047. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC545-01	A	Fusing Central Lamp Continuously Heat
SC545-05	D	Fusing Central Lamp Continuously Heat (Low Power)
After waiting for full power for more than 5 sec continuously. Definition of fusing lamp full power Measurement start point Measurement stop condition Maximum heat-up duty (SP interlinked value) 0% is excluded. Continuously heating rate set point (maximum heating rate) After reload (after fusing lamp extinguished, after rotation complete) below the standby temperature (target temperature), measurement starts after a fusing lamp heat-up request is issued. Rotation started due to a print signal during measurement or other.
Outside input voltage guarantee Jammed paper between the thermopile and fusing unit Thermopile lens dirt Thermopile modification/float After excessive temperature rise prevention unit operation Fusing lamp disconnection Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) BCU defective AC controller board defective

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Check the power supply voltage and reconnect the cable to the outlet. Remove the jammed paper between the thermopile and fusing unit. Clean or replace the thermopile (center). Replace the fusing sleeve thermostat. Replace the fusing sleeve belt unit. Reconnect or replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board).

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC547-01	D	Zero cross error (relay-contact soldering)
Zero-cross signal is detected while the fusing relay is OFF.
Fusing relay defective (contact soldering) Fusing relay drive circuit error
Reconnect the connectors between PSU (AC controller board) and paper transport IOB. Replace the PSU (AC controller board). Replace the paper transport IOB.
SC547-02	D	Zero cross error (relay contact error)
Zero-cross signal is not detected while the fusing relay is ON.
Fusing relay damage (contact open) Fusing relay drive circuit error PSU fuse (24 VS) blowout
Reconnect the connectors between PSU (AC controller board) and Paper transport IOB. Replace the PSU (AC controller board). Replace the paper transport IOB. Replace the harness between PSU (AC controller board) and paper transport IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC547-03	D	Zero cross error (low-frequency error)
Mains power supply frequency is determined to be 44 Hz or lower.
Frequency instability of mains power supply
Check that the mains power supply frequency is higher than 44 Hz. If it is equal to or lower than 44 Hz, infrastructure may have defects to be dealt with. Replace the PSU (AC controller board).

Fusing Sleeve (Edge) Error (SC55*-**)​

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC551-01	A	Thermopile (Edge) Disconnection
Below -50 degrees C (or below CB) is detected for 0.1 sec continuously.
Thermopile disconnection Connector disconnected Harness disconnection between the fusing unit and the BCU BCU defective
Reconnect the connectors (main machine side, BCU side). Replace the thermopile (edge). Replace the harness between the fusing unit and the BCU. Replace the BCU.
SC551-02	A	Non-contact Thermistor (Edge) Disconnection
Above 3F6 is detected for 1 sec continuously (NC sensor center: detection & compensation NC sensor edge: detection & compensation). Detection period: 0.1 sec, detection frequency: 10 times or more.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Non-contact thermistor disconnection Connector disconnected Harness disconnection in the fusing unit Harness disconnection between the fusing unit and the BCU BCU defective
Reconnect the connectors (between the fusing unit and the BCU). Replace the non-contact thermistor with the harness. Replace the fusing unit. Replace the harness between the fusing unit and the BCU. Replace the BCU.
SC551-03	A	Non-contact Thermistor (Edge) Short-circuit
Below AD value: 8 is detected for 1 sec. continuously. Detection period: 0.1 sec, detection frequency: 10 times or more.
Non-contact thermistor short-circuit Connector disconnected Harness disconnection in the fusing unit Harness disconnection between the fusing unit and the BCU BCU defective
Reconnect the connectors (between the fusing unit and the BCU). Replace the non-contact thermistor with the harness. Replace the fusing unit. Replace the harness between the fusing unit and the BCU. Replace the BCU.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC552-02	A	Thermopile (Edge) Does Not Reload
65 degrees C not reached after fusing lamp 1 ON for 14 sec continuously.
SC552-03	A	Thermopile (Edge) Does Not Reload
Heating edge reload permission temperature not reached after fusing lamp 1 ON for 28 sec continuously.
SC552-05	D	Thermopile (Edge) Does Not Reload (Low Power)
65 degrees C not reached after fusing lamp 1 ON for 14 sec continuously.
SC552-06	D	Thermopile (Edge) Does Not Reload (Low Power)
Heating edge reload permission temperature not reached after fusing lamp 1 ON for 28 sec continuously.
		Outside input voltage guarantee Jammed paper between the thermopile and fusing unit Thermopile lens dirt Thermopile modification/float After excessive temperature rise prevention unit operation Fusing lamp disconnection Harness disconnection between the fusing unit and BCU or the PSU (AC controller board) BCU defective AC controller board defective

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Check the power supply voltage and reconnect the cable to the outlet. Remove the jammed paper between the thermopile and fusing unit. Clean or replace the thermopile (edge). Replace the fusing sleeve thermostat. Reconnect the fusing sleeve belt unit. Reconnect or replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board).

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC553-00	A	Thermopile (Edge) High Temperature Detection (software)
Above 240 degrees C detected for 1 sec continuously. Detection period: 0.1 sec, detection count: 10 times or more.
Fusing sleeve belt defective Paper setting misdetection Incorrect paper position in the paper feed tray Gear abrasion Thermopile failure Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Triac defective (short-circuit) BCU failure AC controller board failure

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Inspect the fusing sleeve belt unit, and replace if damaged. Check the paper settings. Check the paper position in the paper feed tray. Reconnect the connectors (main machine side, BCU side). Inspect or replace the gears in the fusing unit or main machine. Replace the thermopile (edge). Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board). If the problem cannot be solved after performing the above steps, replace the fusing unit.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC554-01	A	Thermopile (Edge) high temperature detection (hardware)
In the event of an error
Fusing sleeve belt defective Paper setting misdetection Incorrect paper position in the paper feed tray Gear abrasion Pressure roller HP sensor disconnected Thermopile failure Harness disconnection between the fusing unit and the BCU Triac defective (short-circuit) BCU failure AC controller board failure

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Inspect the fusing sleeve belt unit, and replace if damaged. Check the paper settings. Check the paper position in the paper feed tray. Reconnect the connectors (main machine side, BCU side). Inspect or replace the gears in the fusing unit or main machine. Inspect the pressure roller HP sensor with SP5-803-047. Replace the thermopile (edge). Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board). If the problem cannot be solved after performing the above steps, replace the fusing unit.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC554-02	A	Non-contact Thermistor (Edge) high temperature detection (hardware)
In the event of an error
Fusing sleeve belt defective Paper setting misdetection Incorrect paper position in the paper feed tray Jammed paper between the thermopile and fusing unit Thermopile lens dirt Thermopile modification/float Pressure roller HP sensor disconnected Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Triac defective (short-circuit) BCU failure AC controller board failure

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Inspect the fusing sleeve belt unit, and replace if damaged. Check the paper settings. Check the paper position in the paper feed tray. Reconnect the connectors (main machine side, BCU side). Remove the jammed paper between the thermopile and fusing unit. Clean or replace the thermopile (edge). Replace the fusing unit. Inspect the pressure roller HP sensor with SP5-803-047. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC555-01	A	Fusing Edge Lamp Continuously Heat
SC555-05	D	Fusing Edge Lamp Continuously Heat (Low Power)
		After waiting for full power for more than 5 sec continuously. Definition of fusing lamp full power Measurement start point Measurement stop condition Maximum heat-up Duty (SP interlinked value) 0% is excluded Continuously heating rate set point (maximum heating rate) After reload (after fusing lamp extinguished, after rotation complete) below the standby temperature (target temperature), measurement starts after a fusing lamp heat-up request is issued. Rotation started due to a print signal during measurement or other

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Outside input voltage guarantee Jammed paper between the thermopile and fusing unit Thermopile lens dirt Thermopile modification/float After excessive temperature rise prevention unit operation Fusing lamp disconnection Harness disconnection between the fusing unit and the BCU BCU defective AC controller board defective
Check the power supply voltage and reconnect the cable to the outlet. Remove the jammed paper between the thermopile and fusing unit. Clean or replace the thermopile (edge). Replace the fusing sleeve thermostat. Replace the fusing sleeve belt unit. Reconnect or replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board).

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC557-00	C	Zero Cross Frequency Exceeded
In the event of an error
Frequency instability of mains power supply /Noise
-

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC558-01	C	Low Input Voltage
Input voltage below the specification is detected on the mains power supply
Low input of mains power supply
-

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC559-00	A	Fusing Jam Detected for 3 Times Consecutively
Fusing jam (does not reach fusing exit sensor) is detected for 3 times consecutively. Detection conditions Control ON/OFF Counter reset condition occurs fusing jam Normal paper exit has been done during this continuous fusing jam, fusing jam counter is reset. When "1" is changed to "0" SP1-142-001, to reset the (SP9-912-001) fusing jam counter. When after displaying SC559, SC release is made, reset the (SP9912-001) fusing jam counter. Displays the SC559-00 at the time of integrating the counter each time fusing jam occurs, became fusing jam counter value = 3. The counter value is retained without fusing jam also reset by OFF/ON the power supply. And enables ON / OFF is this SC, the default is set to OFF, then ON at the time of customer requirements. SP1-142-001 0: OFF (default), 1: ON (Set at the time of customer requirements)
		Stripper plate float/ mounting failure Gear abrasion Fusing motor failure

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Inspect or replace the stripper plate. Replace the gears in the fusing unit or main machine. Replace the fusing motor. Replace the fusing unit.

Troubleshooting

Pressure Roller Thermistor (Center) Error (SC56*-**)​

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC561-01	A	Pressure Roller Thermistor (Center) Disconnection
SC561-05	D	Pressure Roller Thermistor (Center) Disconnection (Low Power)
		Below 0 degree C detected for 20 sec continuously. Detection period 0.1 sec, detection count: 10 times or more.
Non-contact thermistor disconnection Connector disconnected Harness disconnection in the fusing unit Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) BCU defective Fusing lamp defective AC controller board defective
Check the power supply voltage and reconnect the cable to the outlet. (-05 only) Reconnect the connectors (between the fusing unit and the BCU). Replace the thermistor. Replace the fusing unit. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the fusing sleeve belt unit. Replace the PSU (AC controller board).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC562-02	A	Pressure Roller Thermistor (Center) Does Not Reload
SC562-05	D	Pressure Roller Thermistor (Center) Does Not Reload (Low Power)
		Does not reach 40 degree C after fusing lamp 1ON for 12 sec.
Outside input voltage guarantee Thermistor dirt Thermistor modification/float After excessive temperature rise prevention unit operation Fusing lamp disconnection Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Thermopile defective BCU defective AC controller board defective
Check the power supply voltage and reconnect the cable to the outlet. Clean or replace the thermistor. Replace the fusing sleeve thermostat. Replace the fusing sleeve belt unit. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the thermopile (center). Replace the BCU. Replace the PSU (AC controller board).

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC563-00	A	Pressure Roller Thermistor (Center) High Temperature Detection (software)
Above 230 degrees C detected for 1 sec continuously. Detection period: 0.1 sec, detection count: 10 times or more.
Paper setting misdetection Incorrect paper position in the paper feed tray Jammed paper between the center thermopile and fusing unit Thermopile lens dirt Thermopile modification/float Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Triac defective (short-circuit) BCU failure AC controller board failure
Check the paper settings. Check the paper position in the paper feed tray. Reconnect the connectors (main machine side, BCU side). Remove the jammed paper between the center thermopile and fusing unit. Clean or replace the thermopile (center). Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board). If the problem cannot be solved after performing the above steps, replace the fusing unit.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC564-00	A	Pressure Roller Thermistor (Center) High Temperature Detection (Hardware)
Above 240 degrees C detected.
Paper setting misdetection Incorrect paper position in the paper feed tray Jammed paper between the center thermopile and fusing unit Thermopile lens dirt Thermopile modification/float Pressure roller HP sensor disconnected Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Triac defective (short-circuit) BCU failure AC controller board failure
Check the paper settings. Check the paper position in the paper feed tray. Reconnect the connectors (main machine side, BCU side). Remove the jammed paper between the center thermopile and fusing unit. Clean or replace the thermopile (center). Inspect the pressure roller HP sensor with SP5-803-047. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board). If the problem cannot be solved after performing the above steps, replace the fusing unit.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC569-00	D	Paper Exit/ Pressure Release Motor Error Detection
Retry operation fails 3 times consecutively.
Pressure roller HP sensor disconnected Pressure release encoder modification Fusing unit defective Paper exit/ pressure release motor disconnected
Inspect the pressure roller HP sensor with SP5-803-047. If no response from the sensor, perform steps 1 and 2. Check the connection of the pressure roller HP sensor. Inspect the pressure roller HP sensor. Inspect the pressure release encoder. Replace the fusing unit. Check the connectors of the paper exit/ pressure release motor.

Pressure Roller Thermistor (Edge) Error (SC57*-**)​

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC571-01	A	Pressure Roller Thermistor (Edge) Disconnection
SC571-05	D	Pressure Roller Thermistor (Edge) Disconnection (Low Power)
		Below 0 degree C detected for 40 sec. continuously. Detection period: 0.1 sec, detection counts: 10 times or more.
Thermistor disconnection Connector disconnected Harness disconnection in the fusing unit Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) BCU defective Fusing lamp defective AC controller board defective
Check the power supply voltage and reconnect the cable to the outlet. (-05 only) Reconnect the connectors (between the fusing unit and the BCU or the PSU (AC controller board). Replace the thermistor. Replace the fusing unit. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the fusing sleeve belt unit. Replace the PSU (AC controller board).

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC572-04	A	Pressure Roller Thermistor (Edge) Does Not Reload
SC572-05	D	Pressure Roller Thermistor (Edge) Does Not Reload ( Low Power)
		After starting continuous job with paper width of 257mm or more, does not reach 0 degrees C after 100 sec.
Outside input voltage guarantee Thermistor dirt Thermistor modification/float After excessive temperature rise prevention unit operation Fusing lamp disconnection Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Thermopile defective BCU defective AC controller board defective
Check the power supply voltage and reconnect the cable to the outlet. Clean or replace the thermistor. Replace the fusing sleeve thermostat. Replace the fusing sleeve belt unit. Reconnect or replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the thermopile (edge). Replace the BCU. Replace the PSU (AC controller board).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC573-00	A	Pressure Roller Thermistor (Edge) High Temperature Detection (software)
Above 230 degrees C detected for 1 sec continuously. Detection period: 0.1 sec, detection count: 10 times or more.
Paper setting misdetection Incorrect paper position in the paper feed tray Jammed paper between the thermopile and fusing unit Thermopile lens dirt Thermopile modification/float Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Triac defective (short-circuit) BCU failure AC controller board failure
Check the paper settings. Check the paper position in the paper feed tray. Reconnect the connectors (main machine side, BCU side). Remove the jammed paper between the thermopile and fusing unit. Clean or replace the thermopile (edge). Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board). If the problem cannot be solved after performing the above steps, replace the fusing unit.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC574-00	A	Pressure Roller Thermistor (edge) High Temperature Detection (hardware)
Above 240 degrees C detected
Paper setting misdetection Incorrect paper position in the paper feed tray Jammed paper between the thermopile and fusing unit Thermopile lens dirt Thermopile modification/float Pressure roller HP sensor disconnected Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Triac defective (short-circuit) BCU failure AC controller board failure
Check the paper settings. Check the paper position in the paper feed tray. Reconnect the connector. Remove the jammed paper between the thermopile and fusing unit. Clean or replace the thermopile (edge). Inspect the pressure roller HP sensor with SP5-803-047. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board). If the problem cannot be solved after performing the above steps, replace the fusing unit.

Pressure Roller Thermistor (Full-bleed edge) Error (SC58*-**)​

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC581-01	A	Pressure Roller Thermistor (Full-bleed edge) Thermistor Disconnection
SC581-05	D	Pressure Roller Thermistor (Full-bleed edge) Disconnection (Low Power)
		Below 0 degree C detected for 40 sec. continuously. Detection period: 0.1 sec, detection count: 10 times or more.
Thermistor disconnection Connector disconnected Harness disconnection in the fusing unit Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) BCU defective Fusing lamp defective AC controller board defective
Check the power supply voltage and reconnect the cable to the outlet. (-05 only) Reconnect the connectors (between the fusing unit and the BCU or the PSU (AC controller board). Replace the thermistor. Replace the fusing unit. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the fusing sleeve belt unit. Replace the PSU (AC controller board).

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC582-04	A	Pressure Roller Thermistor (Full-bleed edge) Does Not Reload
SC582-05	D	Pressure Roller Thermistor (Full-bleed edge) Does Not Reload (Low Power)
		After starting continuous job with paper width of 257 mm or more, does not reach 0 degrees C after 100 sec.
Outside input voltage guarantee Thermistor dirt Thermistor modification/float After excessive temperature rise prevention unit operation Fusing lamp disconnection Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Thermopile defective BCU defective AC controller board defective
Check the power supply voltage and reconnect the cable to the outlet. Clean or replace the thermistor. Replace the fusing sleeve thermostat. Replace the fusing sleeve belt unit. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the thermopile (edge). Replace the BCU. Replace the PSU (AC controller board).

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC583-00	A	Pressure Roller Thermistor (Full-bleed edge) High Temperature Detection (software)
Above 230 degrees C detected for 1 sec continuously. Detection period: 0.1 sec, detection count: 10 times or more.
Paper setting misdetection Incorrect paper position in the paper feed tray Jammed paper between the thermopile and fusing unit Thermopile lens dirt. Thermopile modification/float Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Triac defective (short-circuit) BCU failure AC controller board failure
Check the paper settings. Check the paper position in the paper feed tray. Reconnect the connectors (main machine side, BCU side). Remove the jammed paper between the thermopile and fusing unit. Clean or replace the thermopile (edge). Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board). If the problem cannot be solved after performing the above steps, replace the fusing unit.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC584-00	A	Pressure Roller Thermistor (Full-bleed edge) High Temperature Detection (hardware)
Above 240 degrees C detected
Paper setting misdetection Incorrect paper position in the paper feed tray Jammed paper between the thermopile and fusing unit Thermopile lens dirt Thermopile modification/float Pressure roller HP sensor disconnected Harness disconnection between the fusing unit and the BCU or the PSU (AC controller board) Triac defective (short-circuit) BCU failure AC controller board failure
Check the paper settings. Check the paper position in the paper feed tray. Reconnect the connectors (main machine side, BCU side). Remove the jammed paper between the thermopile and fusing unit. Clean or replace the thermopile (edge). Inspect the pressure roller HP sensor with SP5-803-047. Replace the harness between the fusing unit and the BCU or the PSU (AC controller board). Replace the BCU. Replace the PSU (AC controller board). If the problem cannot be solved after performing the above steps, replace the fusing unit.

6.8 SERVICE CALL 620-687​

6.8.1 SC600 (ENGINE: COMMUNICATION AND OTHERS)​

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC620-01	D	ADF Communication error 1 (DF3090 (D779)/ DF3100 (D3B0))
After ADF connection was recognized on startup, an error is detected. (disconnection detection)
ADF connection error ADF defection IPU board defection Noise contamination
Check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors related to SPDF/ARDF are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the machine and ADF firmware version. Proceed to Step 3 if there is no new firmware released. Run the firmware update when there is a new firmware released. Check the harness. Replace the harness if it is disconnected, or damaged. Replace the IPU. Check if there are any signs of a short circuit on the SPDF/ARDF Main Board. If there are any defects, replace the board.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC620-02	D	ADF Communication error 2 (DF3090 (D779)/ DF3100 (D3B0))
After ADF connection was recognized on startup, an error is detected. (Retry out due to communication error)
ADF connection error ADF defection IPU board defection Noise contamination
Follow the solution for SC620-01.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC620-03	D	ADF Communication error 3 (DF3100 (D3B0))
SC is displayed when CIS initialization complete command is not received for certain time.
ADF connection error ADF defection IPU board defection Noise contamination Unsupported ADF is connected
Check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors related to SPDF/ARDF are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness. Replace the harness if it is disconnected, or damaged. Check if there are any signs of a short circuit on the SPDF Main Board. If there are any defects, replace the board.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC621-00	D	Finisher communication error
Detected an error when connecting the communication line. Received a communication error notification from the URAT.
Finisher control board defective. BCU defective IOB defective Connection error between finisher and main machine.
Reconnect the Finisher interface cable. Replace the BCU. Replace the Imaging IOB. Replace the finisher. Turn the power off/on.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC622-01	D	Paper bank 1 communication error for Paper Feed Unit PB3150 (D694)
SC622-11	D	Paper bank 1 communication error for Paper Feed Unit PB3220/PB3210 (D787)
		Detected an error when connecting the communication line. Received a communication error notification from the URAT.
Paper bank control board defective BCU defective IOB defective Paper bank-main machine connection error

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Check if the SC occurs by turning the main power OFF then ON. If the SC occurs again, do the following steps. Check if the SC reoccurs by cycling the power after each step. Check if all connectors in tray 1, 2, and optional paper tray are connected securely. Reconnect the connectors if they are disconnected, or loose. Check the harness in tray 1, 2, and optional paper tray. Replace the harness if it is disconnected, or damaged. Check if there are any signs of a short circuit on the Bank Main Board. If there are any defects, replace the board.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC663-01	D	Reset Detection: Imaging IOB: Software hang-up occurs
SC663-02	D	Reset Detection: Imaging IOB: Power ON reset occurs
SC663-03	D	Reset Detection: Imaging IOB: Software reset occurs
SC663-11	D	Reset Detection: Paper Transport IOB: Software hang-up occurs
SC663-12	D	Reset Detection: Paper Transport IOB: Power ON reset occurs
SC663-13	D	Reset Detection: Paper Transport IOB: Software reset occurs
		SC is displayed when unexpected reset from Imaging IOB/Paper Transport IOB is detected while standby/operation.
Unexpected noise from inside the machine gets into Paper Transport IOB. Parts defect and implementation defect of Imaging IOB/ Paper Transport IOB. Software ran reset to ASIC when there was a bug in the software or unexpected signal was input (-03/-13 only).
Turn the main power OFF/ON. Replace the Paper Transport IOB (-01 to -03) Replace the Imaging IOB (-11 to -13)

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC664-01	D	VODKA1 (Paper Transport Vodka) access permission error to VODKA SRAM
SC664-02	D	VODKA1 (Paper Transport Vodka) write error to VODKA SRAM
SC664-03	D	VODKA1 (Paper Transport Vodka) VODKA program launch error
SC664-11	D	VODKA2 (Imaging Vodka) access permission error to VODKA SRAM
SC664-12	D	VODKA2 (Imaging Vodka) write error to VODKA SRAM
SC664-13	D	VODKA2 (Imaging Vodka) VODKA program launch error
		The machine detects the communication error between VODKA and SRAM when starting up, or recovery from energy saver mode.
The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU Imaging IOB Paper Transport IOB
-01 to 03 Turn the main power OFF/ON. Replace the Paper Transport IOB. Replace the BCU. Replace the Imaging IOB. -11 to 13 Turn the main power OFF/ON. Replace the Imaging IOB. Replace the BCU.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-01	D	Connection Error (BCU - IPU)
The machine detects the communication error between BCU and IPU (No FFC connection) when starting up, or recovery from energy saver mode.
FFC connection error FFC defective (disconnected, foreign object, etc.) The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU IPU
Reconnect the FFC between BCU and IPU. Replace the FFC between BCU and IPU. Replace the BCU. Replace the IPU.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-02	D	Connection Error (BCU – Imaging IOB)
The machine detects the communication error between BCU and Imaging IOB (No connection) when starting up, or recovery from energy saver mode.
FFC connection error FFC defective (disconnected, foreign object, etc.) The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU Imaging IOB
Reconnect the FFC between BCU and Imaging IOB. Replace the FFC between BCU and Imaging IOB. Replace the BCU. Replace the Imaging IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-03	D	Connection Error (Paper Transport IOB – Imaging IOB)
The machine detects the communication error between Imaging IOB and Paper Transport IOB (No connection) when starting up, or recovery from energy saver mode.
FFC connection error FFC defective (disconnected, foreign object, etc.) The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); Paper Transport IOB. Imaging IOB.
Reconnect the FFC between Paper Transport IOB and Imaging IOB. Replace the FFC between Paper Transport IOB and Imaging IOB. Replace the Imaging IOB. Replace the Paper Transport IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-04	D	IOB does not start up
The IOB does not start up when starting up, or recovery from energy saver mode.
Connector disconnected Harness disconnected The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.) BCU Imaging IOB Paper Transport IOB

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Turn the main power OFF/ON. Reconnect the following FFC; BCU - Imagine IOB Imaging IOB - Paper Transport IOB Replace the following FFC; BCU - Imagine IOB Imaging IOB - Paper Transport IOB Replace the BCU. Replace the Imaging IOB. Replace the Paper Transport IOB.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-05	D	Master Device Communication Error
The machine detects the communication error between CPU and Slave1 when starting up, or recovery from energy saver mode.
FFC connection error FFC defective (disconnected, foreign object, etc.) The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU IPU Imaging IOB Paper Transport IOB.
		Turn the main power OFF/ON. Reconnect the following FFC; BCU - Imagine IOB Imaging IOB - Paper Transport IOB Replace the following FFC; BCU - Imagine IOB Imaging IOB - Paper Transport IOB Replace the BCU. Replace the Imaging IOB. Replace the Paper Transport IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-06	D	IPU and IOB signal Communication Error
The machine detects the communication error between CPU and Slave1 when starting up, or recovery from energy saver mode.
FFC connection error FFC defective (disconnected, foreign object, etc.) The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU IPU Imaging IOB Paper Transport IOB.
		Turn the main power OFF/ON. Reconnect the following FFC; BCU - Imagine IOB Imaging IOB - Paper Transport IOB Replace the following FFC; BCU - Imagine IOB Imaging IOB - Paper Transport IOB Replace the BCU. Replace the IPU. Replace the Imaging IOB. Replace the Paper Transport IOB.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-07	D	IPU signal Communication Error
The machine detects the communication error between CPU and Slave device when starting up, or recovery from energy saver mode.
FFC connection error FFC defective (disconnected, foreign object, etc.) The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU IPU
Turn the main power OFF/ON. Reconnect the following FFC; BCU - Imagine IOB Imaging IOB - Paper Transport IOB Replace the following FFC; BCU - Imagine IOB Imaging IOB - Paper Transport IOB Replace the BCU. Replace the IPU.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-08	D	IOB signal Communication Error
The machine detects the communication error between CPU and Slave1 when starting up, or recovery from energy saver mode.
FFC connection error FFC defective (disconnected, foreign object, etc.) The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU Imaging IOB Paper Transport IOB.
Turn the main power OFF/ON. Reconnect the following FFC; BCU - Imagine IOB Imaging IOB - Paper Transport IOB Replace the following FFC; BCU - Imagine IOB Imaging IOB - Paper Transport IOB Replace the BCU. Replace the Imaging IOB. Replace the Paper Transport IOB.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-11	D	Vodka1 Communication Error
The machine detects the communication error between CPU and Vodka1 when starting up, or recovery from energy saver mode.
FFC connection error FFC defective (disconnected, foreign object, etc.) The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU Paper Transport IOB.
Turn the main power OFF/ON. Reconnect the FFC between Imaging IOB and Paper Transport IOB. Replace the harness between Imaging IOB and Paper Transport IOB. Replace the Imaging IOB. Replace the Paper Transport IOB. Reconnect the FFC between BCU and Imaging IOB. Replace the FFC between BCU and Imaging IOB Replace the BCU.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-12	D	Vodka2 Communication Error
The machine detects the communication error between CPU and Vodka2 when starting up, or recovery from energy saver mode.
FFC connection error FFC defective (disconnected, foreign object, etc.) The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU Imaging IOB.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
		Turn the main power OFF/ON. Reconnect the FFC between BCU and Imaging IOB. Replace the FFC between BCU and Imaging IOB Replace the BCU. Replace the Imaging IOB. Pull out all the PCUs and check if the SC reoccurs or not. If SC message disappears, replace the PCU. Pull out all the toner bottles and check if the SC reoccurs or not. If SC message disappears, replace the toner bottle.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-41	D	Macaron1 Communication Error
The machine detects the communication error between CPU and Macaron1 when starting up, or recovery from energy saver mode.
FFC connection error FFC defective (disconnected, foreign object, etc.) The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU IPU
Turn the main power OFF/ON. Replace the IPU. Reconnect the FFC between BCU and IPU. Replace the FFC between BCU and IPU. Replace the BCU.

Troubleshooting

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC665-42	D	Macaron2 Communication Error
The machine detects the communication error between CPU and Macaron2 when starting up, or recovery from energy saver mode.
FFC connection error FFC defective (disconnected, foreign object, etc.) The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU IPU
Turn the main power OFF/ON. Replace the IPU. Reconnect the FFC between BCU and IPU. Replace the FFC between BCU and IPU. Replace the BCU.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC667-01	D	Master Device Mode Setting Error
The machine detects the CPU mode error when starting up, or recovery from energy saver mode.
The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU
Turn the main power OFF/ON. Replace the BCU.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC667-10	D	Slave1 Device Mode Setting Error
The machine detects the Slave1 mode error when starting up, or recovery from energy saver mode.
The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU Paper Transport IOB
Turn the main power OFF/ON. Replace the Paper Transport IOB. Reconnect the FFC between Imaging IOB and Paper Transport IOB. Replace the harness between Imaging IOB and Paper Transport IOB. Replace the Imaging IOB. Reconnect the harness between BCU and Imaging IOB. Replace the harness between BCU and Imaging IOB. Replace the BCU.

SC No.	Type	Error Name/Error Condition/Major Cause/Solution
SC667-11	D	Slave2 Device Mode Setting Error
The machine detects the Slave2 mode error when starting up, or recovery from energy saver mode.
The following board defects (Parts implementation defect, solder scrap, implemented parts defect, etc.); BCU Paper Transport IOB
Turn the main power OFF/ON. Replace the Imaging IOB. Reconnect the harness between BCU and Imaging IOB. Replace the harness between BCU and Imaging IOB. Replace the BCU.