• Code: 920
• Description: Printer error
  An application error that stops the machine operation is detected.
• Causes: • Defective software
  1. Unexpected hardware resource (e.g., memory shortage)

• Code: 921
• Description: Printer font error
  A necessary font is not found in the SD card when the printer application starts.
• Causes: • A necessary font is not found in the SD card.
  • The SD card data is corrupted.
  1. Check that the SD card stores correct data.

• Code: 928
• Description: Memory error
  An error occurs during the memory check conducted when the main power switch is turned on or when the copier is recovering from the energy saver mode.
• Causes: • Defective memory
  • Defective BICU
  • Loose connection between the BICU and the memory

• Code: 929
• Description: IMAC hardware error
  A memory control job is not completed within a certain period.
• Causes: • Defective IMAC
  • Defective BICU
  • Loose connection

• Code: 981
• Description: NVRAM error
  An error occurs during engine NVRAM check.
• Causes: • Defective NVRAM
  • Loose connection between the BICU and the NVRAM
  • Incorrect installation of the NVRAM
  • Defective BICU

• Code: 982
• Description: Localization error
  The localization information in the nonvolatile ROM and in the NVRAM is different (* SP5-807-001).
• Causes: • Localization setting not specified (The main power switch is turned on for the first time after the NVRAM is replaced.)
  • Incorrect localization setting
  • Defective NVRAM

• Code: 990
• Description: Software performance error
  The software attempted to perform an unexpected operation.
• Causes: • Software defective
  • Internal parameter incorrect
  • Insufficient working memory

• Code: 991
• Description: Software continuity error
  The software attempted to perform an unexpected operation. However, unlike SC990, the process can keep on running.
• Causes: • Logged only; the machine can continue to operate