• Code: 091-912
• Description: Xerographics Drum Module Installation RAP The Xerographics Drum is not installed.
• Remedy: Check the installation of the Drum Cartridge (PL 4.1). The Drum Cartridge installation is correct. Y↓N→Correct the installation (PL 4.1). Verify the condition of the circuit between the Drum Cartridge Position Sensor and MCU PWB. The circuit is free of damage. Y↓N→Repair the circuit as required. Replace the MCU PWB (PL 9.1).

• Code: 091-913
• Description: Drum Cartridge End of Life RAP It is time to replace the Drum Cartridge.
• Remedy: Check the Drum Cartridge for failure or foreign substances. There are no foreign substances and nothing has failed. Y↓N→Repair the failure and remove the foreign substances. Check the installation of the XERO CRUM PWB. The XERO CRUM PWB is installed correctly. Y↓N→Install the XERO CRUM PWB correctly (PL 4.2). Check the connection of the MCU PWB P/J419. P/J419 is connected correctly. Y↓N→Connect P/J407. Check the connection of the XERO CRUM PWB P/J126. P/J126 is connected correctly. Y↓N→Connect P/J142. Check the wire between J419 and P1126 for an open circuit or a short circuit. Thwei irse conducting without an open circuit or a short circuit. Y↓N→Repair the open circuit or short circuit. Measure the voltage between the MCU PWB J419-1 (+) and GND (-). The voltage is approx. +5VDC. Y↓N→Replace the MCU PWB (PL 9.1). Replace the Drum Cartridge (PL 4.1) If the problem persists, replace the XERO CRUM PWB (PL 4.1) If the problem persists, replace the MCU PWB (PL 9.1).

• Code: 091-914
• Description: Xero CRUM Comm RAP There is a failure with communication between the Xero CRUM and MCU PWB.
• Remedy: Pull out and reinstall the Xerographics Drum Module. The problem persists. Y↓N→Return to Service Call Procedures. Verify the connections and condition of the circuit between Xero CRUM and MCU PWB. Thcei rcuit is free of damage and the connections are good. Y↓N→Repair the damage as required. Check CRUM operating voltage. The operating voltage is correct. Y↓N→Check the circuit for damage. If the circuit is free of damage replace the MCU PWB (PL 9.1). Enter diagnostics and verify NVM value for Xero CRUM data, location [751-010]. If NVM value indicates failure replace Xerographics Drum Module (PL 4.1) If NVM value indicates no failure, replace the MCU PWB (PL 9.1).

• Code: 091-915
• Description: Xero CRUM Data RAP The Control Logic detected incorrect data on the Xero CRUM.
• Remedy: Check NVM location 740-047, for Geographic area: • NA/EU = 3 • DMO-E/W = 12 • All the World = 512 Check NVM location 740-049, for Contact Type: • Metered = 3 • Sold = 2 • Neutral = 31 Procedure Pull out and reinstall the Xerographics Drum Module. The problem persists. Y↓N→Return to Service Call Procedures. An incorrect Xerographics Drum Module was just installed. Install the correct Xerographics Drum Module.

• Code: 091-916
• Description: Xero CRUM Match RAP The Control Logic detected mismatched data on the Xero CRUM.
• Remedy: Pull out and reinstall the Xerographics Drum Module. The problem persists. Y↓N→Return to Service Call Procedures. An incorrect Xerographics Drum Module was installed. Verify the position of the Xerographics Drum Module. Install the correct Xerographics Drum Module.

• Code: 092-661
• Description: Temperature Sensor RAP There is a temperature sensor failure.
• Remedy: Check the operating voltages between the Temperature/Humidity Sensor and the MCU PWB. The voltages are correct. Y↓N→Verify that the circuit is not damaged. If no damage is found, replace the MCU PWB (PL 9.1). Replace the Temperature/Humidity Sensor (PL 4.2).

• Code: 092-662
• Description: Humidity Sensor RAP There is a humidity sensor failure.
• Remedy: Check the operating voltages between the Temperature/Humidity Sensor and the MCU PWB. The voltages are correct. Y↓N→Verify that the circuit is not damaged. If no damage is found, replace the MCU PWB (PL 9.1). Replace the Temperature/Humidity Sensor (PL 4.2).

• Code: 093-400
• Description: Black Toner Near Empty Black Toner Cartridge is near empty
• Remedy: Check the following: • Replace the Black Toner Cartridge if empty (PL 4.1) • That the Black Toner Cartridge is inserted properly • For Black Toner spills in the machine