Sharp MXB350PE

• Code: U9-81
• Description: OPU communication trouble (parity)
• Causes: Harness trouble between OPU PWB and MFPC PWB
• Remedy: Check connector connection and harness of OPU
  PWB and MFPC PWB
  Replace OPU PWB or MFPC PWB
  Check ground point
  Power off/on

• Code: U9-82
• Description: OPU communication trouble (overrun)
• Causes: Harness trouble between OPU PWB and MFPC PWB
• Remedy: Check connector connection and harness of OPU
  PWB and MFPC PWB
  Replace OPU PWB or MFPC PWB
  Check ground point
  Power off/on

• Code: U9-84
• Description: OPU communication trouble (flaming)
• Causes: Harness trouble between OPU PWB and MFPC PWB
• Remedy: Check connector connection and harness of OPU
  PWB and MFPC PWB
  Replace OPU PWB or MFPC PWB
  Check ground point
  Power off/on

• Code: U9-88
• Description: OPU communication trouble (time-out)
• Causes: Command size error from MFPC to OPU
• Remedy: Replace OPU PWB or MFPC PWB
  Power off/on

• Code: U9-99
• Description: OPU language error
• Causes: Command size error from MFPC to OPU
• Remedy: Replace OPU PWB or MFPC PWB
  Power off/on