• Code: SC641
• Description: Engine-Controller Communication Error: No Response CTL There was no response to a frame sent from the controller board to the engine.
• Causes: • Cycle the machine off/on.
• Remedy:

• Code: SC954
• Description: Printer Image Setting Error The IPU did not issue the signal required to start image processing for the printing mode within 60 s after the paper stops for registration.
• Causes: • Software defective • Replace the software (all firmware modules). • SIPU defective
• Remedy:

• Code: SC965
• Description: Print Start Error During print processing, another command to start printing was received.
• Causes: • Printer firmware defective • Update printer firmware
• Remedy:

• Code: SC967
• Description: Image write start error The paper stopped at the registration sensor and roller for buckle adjustment but the signal to start image writing was not received within 60 sec.
• Causes: • Printer firmware defective • Update printer firmware • Check the connections between the LPH sections (x3) and the VDB • LPH defective • VDB defective • MCU defective
• Remedy:

• Code: SC984
• Description: Print image data send error No data was sent within 1 sec. after the print image data stream started.
• Causes: • Harness from IPU to controller board loose, broken, defective • SIPU defective
• Remedy:

• Code: SC990
• Description: Software error 1 CTL The software performs an unexpected function and the program cannot continue.
• Causes: • Firmware defective: re-boot • Update firmware
• Remedy: 1. Execute SP7403 or print an SMC Report (SP5990) to read the history of the 10 most recent logged errors. 2. If you press [0] on the operation panel with the SP selection menu displayed, you will see detailed information about the recently logged SC990 or SC991 errors, including the software file name, line number, and so on. (1) above is the recommended method, because another SC could write over the information for the previous SC.

• Code: SC991
• Description: Software error 2 CTL The software performs an unexpected function. However, unlike SC990, recovery processing allows the program to continue.
• Causes: • Software defective, re-boot
• Remedy: 1. Execute SP7403 or print an SMC Report (SP5990) to read the history of the 10 most recent logged errors. 2. If you press [0] on the operation panel with the SP selection menu displayed, you will see detailed information about the recently logged SC990 or SC991 errors, including the software file name, line number, and so on. (1) above is the recommended method, because another SC could write over the information for the previous SC.

• Code: SC992
• Description: Erratic SC error
• Causes: There was an unusual operation by the software because of: • An incorrect argument in the program. • An incorrect internal parameter. • Work memory not sufficient. • An error occurred that could not be detected by other SC codes.
• Remedy: • Turn the main power switch off/on. • Go into the SP mode. Do SP7901 to display details about SC992 (software file name, line number, and variable), and inform your supervisor of the results.