392

Developer initialization error
The ID sensor does not detect a correct pattern during developer initialization (* 2-214-001).

• Defective ID sensor
• Insufficient developer
• Defective drum operation
• Defective development roller operation
• Loose connection of the PCU
• Insufficient voltage for the charge roller

401

Transfer roller leak error (positive electrode)
The feedback voltage of the transfer roller is insufficient.

• Defective high voltage supply board
• Loose connection of the PCU
• Incorrect installation of the transfer unit or the separation unit
• Defective transfer roller

402

Transfer roller leak error (negative electrode)
The feedback voltage of the transfer roller is insufficient.

• Defective high voltage supply board
• Loose connection of the PCU
• Incorrect installation of the transfer unit or the separation unit
• Defective transfer roller

500

Main motor error
A main motor lock signal is not detected for more than 7 consecutive checks (700 ms) after the main motor starts to rotate, or the lock signal is not detected for more than 7 consecutive checks during rotation after the last signal.

- Too much load on the drive mechanism
- Main motor defective

502

Tray 2 lift motor malfunction (Optional paper tray units)
The paper lift sensor fails to activate twice continuously after the tray lift motor has been on for 18 seconds.

- Paper lift sensor defective
- Tray lift motor defective
- Too much load on the drive mechanism
- Poor tray lift motor connection

503

Tray 3 lift motor malfunction (optional paper tray units)
The paper lift sensor fails to activate twice continuously after the tray lift motor has been on for 18 seconds.

- Paper lift sensor defective
- Tray lift motor defective
- Too much load on the drive mechanism
- Poor tray lift motor connection

504

Tray 4 lift motor malfunction (optional two-tray paper tray unit)
The paper lift sensor fails to activate twice continuously after the tray lift motor has been on for 18 seconds.

- Paper lift sensor defective
- Tray lift motor defective
- Too much load on the drive mechanism
- Poor tray lift motor connection

506

Paper feed motor lock (optional paper tray units)
A motor lock signal is not detected for more than 1.5 s or the lock signal is not detected for more than 1.0 s during rotation.

- Paper feed motor defective
- Too much load on the drive mechanism

541

Fusing thermistor open (center)
The fusing temperature detected by the thermistor is below 71C and is not corrected after the main power switch is turned on.

- Fusing thermistor defective or out of position
- Power supply board defective
- Loose connectors

542

Fusing temperature warm-up error (center)
The fusing temperature rises less than 7 degrees in 2 seconds, and this continues 5 times consecutively. The fusing temperature is not detected in 25 or 35 seconds.

- Fusing thermistor defective or out of position
- Fusing lamp open
- Power supply board defective

543

Fusing overheat error (center)
The fusing temperature is over 230C for 1 second (detected by the thermistor).

- Fusing thermistor defective
- Power supply board defective

544

Fusing overheat error (center) 2
The fusing temperature is over 250C for 1 second (detected by the fusing temperature monitor circuit).

- Fusing thermistor defective
- Power supply board defective

545

Fusing lamp overheat error (center)
After the fusing temperature reaches the target temperature, the fusing lamp does not turn off for 12 consecutive seconds.

- Fusing thermistor defective or out of position
- Power supply board defective

546

Unstable fusing temperature (center)
The fusing temperature varies 50C or more within 1 second, and this occurs 2 consecutive times.

- Thermistor defective or out of position
- Power supply unit defective

547

Zero cross signal malfunction
Zero cross signals are not detected within 5 seconds after the main power switch is turned on, or are not detected within 1 second after operation begins.

- Power supply board defective
- BICU defective

551

Fusing thermistor open (rear)
The fusing temperature detected by the thermistor is below 71C and is not corrected after the main power switch is turned on.

- Fusing thermistor defective or out of position
- Power supply board defective
- Loose connectors

552

Fusing temperature warm-up error (rear)
The fusing temperature rises less than 7 degrees in 2 seconds, and this continues 5 times consecutively. The fusing temperature is not detected in 25 or 35 seconds.

- Fusing thermistor defective or out of position
- Fusing lamp open
- Power supply board defective

553

Fusing overheat error (rear)
The fusing temperature is over 230C for 1 second (detected by the thermistor).

- Fusing thermistor defective
- Power supply board defective

555

Fusing lamp overheat error (rear)
After the fusing temperature reaches the target temperature, the fusing lamp does not turn off for 20 consecutive seconds.

- Fusing thermistor defective or out of position
- Power supply board defective

556

Unstable fusing temperature (rear)The fusing temperature varies 50C or more within 1 second, and this occurs 2 consecutive times.

- Thermistor defective or out of position
- Power supply unit defective

559

Jam error detected 3 times in succession
- The exit sensor and the duplex sensor detect a paper jam 3 times in succession
- This condition can occur when SP 1159 1 is set to ‘on’. The default is ‘off’.

Paper jams can occur for the following reasons
- Dampness
- Paper curl
- Incorrect paper setting in the paper tray
- Stripper pawls coming apart

590

Left exhaust fan motor error
The CPU detects an exhaust fan lock signal for more than 5 seconds.

- Loose connection of the exhaust fan motor
- Too much load on the motor drive

591

Rear exhaust fan motor error
The CPU detects an exhaust fan lock signal for more than 5 seconds.

- Loose connection of the exhaust fan motor
- Too much load on the motor drive

620

Communication error between BICU and ADF
The BICU does not receive a response from the ADF main board for 4 seconds or more. The BICU receives a break signal from the ADF main board.

- Poor connection between the BICU and ADF main board (DF connector)
- ADF main board defective
- BICU defective

621

ADF connection error
An incorrect ADF (an ADF for some other copier) is detected. (for Basic and GDI machines) An ADF (including the correct ADF) is installed while the copier is in the energy saver mode. (for GDI machine only)

- ADF incorrect (The ADF for B039/B040/B043 or
B121/B122/B123 is installed on a B245/B268/B269/B276/B277.)
- The connector of the ADF is removed while the machine is in the energy saver mode.

632

Accounting error 1
An error is detected during the communication with the MF accounting device.

- Accounting device defective
- Loose connection

633

Accounting error 2
After communication is established with the MF accounting device, a brake signal is issued.

- Accounting device defective
- Loose connection

634

Accounting RAM error
An error is detected in the RAM that saves the information on the MF accounting.

- Accounting device defective

635

Accounting battery error
An error is detected in the battery that is in the MF accounting device.

- Accounting device defective

670

Engine start error
The engine-ready signal is not issued within 70 seconds after the switch is turned on.

- Engine board defective
- Controller defectiv
- Loose connection

Code

Description

Causes

692

Controller board communication abnormal
Communication error between the printer part of the controller board and BICU.

- The connector is abnormal between the controller board and the BICU board.

694

Controller board communication abnormal
Communication error between the scanner part of the controller board and BICU.

- The connector is abnormal between the controller board and the BICU board.

760

ADF gate abnormal 1
The ADF Gate signal line between the ADF main board and the BICU is disconnected.

- ADF main board defective
- Input/output board defective
- Poor connection (ADF Gate line) between the ADF main board and the BICU.

761

ADF gate abnormal 2
The FGATE signal is not issued from the ADF within 30 seconds after the ADF starts feeding.

- ADF connector defective
- SBU board defective

762

ADF gate abnormal 3
The FGATE signal is not terminated by the ADF within 60 seconds after the ADF starts feeding.

- ADF connector defective
- SBU board defective

800

Startup without video output end error
Video transfer to the engine is started, but the engine did not issue a video transmission end command within the specified time.

- Controller board defective

804

Startup without video input end
A video transmission was requested from the scanner, but the scanner did not issue a video transmission end command within the specified time.

- Controller board defective

818

Watchdog error
The CPU does not access the watchdog register within a certain time.

- Controller board defective
- Software malfunction - download controller firmware again

819

Kernel mismatch error
Software bug

- Download controller firmware again

820

Self-Diagnostic Error: CPU
The central processing unit returned an error during the self-diagnostic test.

- Controller board defective
- Download controller firmware again

821

Self-Diagnostic Error: ASIC
The ASIC returned an error during the selfdiagnostic test because the ASIC and CPU timer interrupts were compared and determined to be out of range.

- Controller board defective

823

Self-diagnostic Error: Network Interface
The network interface board returned an error during the self-diagnostic test.

- Network interface board defective
- Controller board defective

824

Self-diagnostic Error: NVRAM
The resident non-volatile RAM returned an error during the self-diagnostic test.

- Replace the NVRAM on the controller board
- Replace the controller board

826

Self-diagnostic Error: NVRAM/Optional NVRAM
The NVRAM or optional NVRAM returned an error during the self-diagnostic test.

- Replace the NVRAM on the controller board

827

Self-diagnostic Error: RAM
The resident RAM returned a verify error during the self-diagnostic test.

- Download controller firmware again

Code

Description

Causes

828

Self-diagnostic Error: ROM
The resident read-only memory returned an error during the self-diagnostic test.

- Controller board defective
- Download controller firmware again

829

Self-diagnostic Error: Optional RAM
The optional RAM returned an error during the self-diagnostic test

- Replace the optional memory board
- Controller board defective

838

Self-diagnostic Error: Clock Generator
A verify error occurred when setting data was read from the clock generator via the I2C bus

- Replace the controller board

850

Network I/F Abnormal
NIB interface error.

- NIB defective
- Controller board defective

857

USB I/F Error
USB interface error detected.

- Defective controller

900

Electrical total counter error
The electrical total counter does not work properly.

- NVRAM on the GDI controller board defective

901

Mechanical total counter
The mechanical total counter does not work properly.

- Mechanical total counter defective
- BICU defective
- Disconnected mechanical total counter

903

Engine total counter error
The checksum of the total counter is not correct.

- NVRAM on the BICU defective

920

Printer error
A fatal error is detected in the printer application program

- Printer application program defective
- Hardware configuration incorrect (including memory shortage)

921

Printer font error
Necessary font files are not found.

- Font file not installed

928

Memory error
The machine detects a discrepancy in the write/read data during its write/read test (done at power off/on and at recovery from low power or night/off mode).

- Memory defective
- BICU defective
- Poor connection between BICU and memory

954

Printer application program error
The printer status does not become ready when the printer application program is necessary for image processing.

- Application program defective

955

Image transfer error
The controller is not able to transfer images when the engine needs them.

- Application program defective

964

Status error (laser optics housing unit)
The optics-housing unit does not become ready within 17 seconds after the request.

- Software defective

981

NVRAM error
The machine detects a discrepancy in the NVRAM write/read data when attempting to save actual data to the NVRAM (i.e. during actual use).

- NVRAM defective
- Poor connection between BICU and NVRAM
- NVRAM is not connected
- BICU defective

982

Localization error
The localization settings in the nonvolatile ROM and RAM are different

- First machine start after the NVRAM is replaced
- Incorrect localization setting
- NVRAM defective

984

Print image transfer error
Print images are not transferred.

- Controller defective
- BICU board defective
- Poor connection between controller and BICU

990

Software performance error
The software attempted to perform an unexpected operation

- Software defective
- Internal parameter incorrect
- Insufficient working memory
- When this SC occurs, the file name, address, and data will be stored in NVRAM. This information can be checked by using SP 7403. Note the above data and the situation in which this SC occurs. Then report the data and conditions to your technical control center.

991

Software continuity error
The software attempted to perform an unexpected operation. However, unlike SC990, the object of the error is continuity of the software.

- No operation required. This SC code does not appear on the panel, and is only logged.

992

Unexpected Software Error
Software encountered an unexpected operation not defined under any SC code.

- Software defective
- An error undetectable by any other SC code occurred

997

Application function selection error
The application selected by a key press on operation panel does not start or ends abnormally.

- Download the firmware for the application that failed
- An option required by the application (RAM board) is not installed

998

Application start error
After power on, the application does not start within 60 s. (All applications neither start nor end normally.)

- Download controller firmware
- Replace the controller board
- An option required by the application (RAM board) is not installed

999

Program download error
The download (program, print data, language data) from the IC card does not execute normally.

- Board installed incorrectly
- BICU board defective
- Controller board defective
- IC card defective
- NVRAM defective
- Loss of power during downloading
- Important Notes About SC999
- Primarily intended for operating in the download mode, logging is not performed with SC999.
- If the machine loses power while downloading, or if for some other reason the download does not end normally, this could damage the controller board or the PCB targeted for the download and prevent subsequent downloading. If this problem occurs, the damaged PCB must be replaced.