• Code: 921
• Description: Printer font error
  Necessary font files are not found.
• Causes: • Font file not installed

• Code: 925
• Description: Net file error
  The net-file management-file contains a fatal error.
• Causes: • Data corruption

• Code: 928
• Description: 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).
• Causes: • Memory defective • BICU defective • Poor connection between BICU and memory

• Code: 929
• Description: IMAC hardware error
  A memory control job is not completed within a certain period.
• Causes: • IMAC on the GW controller board defective • BICU defective • Poor connection

• Code: 954
• Description: Printer application program error
  The printer status does not become ready when the printer application program is necessary for image processing.
• Causes: • Application program defective

• Code: 955
• Description: Image transfer error
  The controller is not able to transfer images when the engine needs them.
• Causes: • Application program defective

• Code: 964
• Description: Status error (laser optics housing unit)
  The optics housing unit does not become ready within 17 seconds after the request.
• Causes: • Software defective

• Code: 980
• Description: Controller-engine inconsistency
  The controller is incompatible with the engine.
• Causes: • One of the following controllers is installed to the basic model: - The controller of the MFP model - The controller of the copier/facsimile model - The controller of the printer/scanner/copier model • The controller of the optional printer/scanner is installed to one of the following models: - The MFP model - The copier/facsimile model - The printer/scanner/copier model