• Code: 911
• Description: DC Pick Motor Excessive PWM
• Remedy: Error Codes 910, 911, 912, 913, and 914 are indications that a Tray 1 paper feed problem has been detected. 1 Tray x Option system board or compensator assembly or autoconnect cable Check the autoconnect cables and connectors for damage. Replace if necessary. Check the cables for continuity. If incorrect, replace the compensator assembly cable. If the cables, connectors, and connections are good, replace the FRUs in the following order: • Autocompensator assembly option • Option system board.

• Code: 912
• Description: DC Pick Motor below speed
• Remedy: Error Codes 910, 911, 912, 913, and 914 are indications that a Tray 1 paper feed problem has been detected. 1 Tray x Option system board or compensator assembly or autoconnect cable Check the autoconnect cables and connectors for damage. Replace if necessary. Check the cables for continuity. If incorrect, replace the compensator assembly cable. If the cables, connectors, and connections are good, replace the FRUs in the following order: • Autocompensator assembly option • Option system board.

• Code: 913
• Description: DC Pick Motor over speed
• Remedy: Error Codes 910, 911, 912, 913, and 914 are indications that a Tray 1 paper feed problem has been detected. 1 Tray x Option system board or compensator assembly or autoconnect cable Check the autoconnect cables and connectors for damage. Replace if necessary. Check the cables for continuity. If incorrect, replace the compensator assembly cable. If the cables, connectors, and connections are good, replace the FRUs in the following order: • Autocompensator assembly option • Option system board.

• Code: 914
• Description: DC Pick Motor: No encoder feedback
• Remedy: Check the integrated paper tray (Tray 1) for correct paper loading. Reload the paper and POR the printer. If the error continues. 1 Tray x Option system board or compensator assembly or autoconnect cable Check the autoconnect cables and connectors for damage. Replace if necessary. Check the cables for continuity. If incorrect, replace the compensator assembly cable. If the cables, connectors, and connections are good, replace the FRUs in the following order: • Autocompensator assembly option • Option system board.

• Code: 917
• Description: Transfer Roll
• Remedy: Indicates a problem in the transfer roll area. 1 Transfer roll assembly Check the transfer roll for toner buildup, surface damage to the roll, oil, or other contaminants on the surface of the roll. Replace the transfer roll as necessary. 2 Left transfer arm assembly Check the left transfer roll arm assembly to make sure it is fastened and locked in the down position. If the arm is not locked down, make sure the arm is not broken and locks into the EP frame correctly. Check the left transfer arm assembly spring for proper operation. 3 Right transfer arm assembly Check the right transfer arm assembly to make sure it is fastened and locked in the down position. If the arm is not locked down, make sure the arm is not broken and locks into the EP frame correctly. Check the right transfer arm assembly spring for proper operation. For any background problems, ensure the contact to the HVPS board is correct and that there is approximately 0 ohms resistance between the transfer roll shaft and the HVPS contact. If correct, go to “Print quality—background”. 4 HVPS—917 Error code Check the voltage at J22-3. The voltage changes from +24 V dc with the printer idle to 0 V dc when the printer runs the print test. If the voltage is incorrect, check the continuity of line J22-3 in the front cable harness to the HVPS. If there is no continuity, replace the cable harness. If there is continuity, replace the HVPS. If the problem continues, replace the system board.

• Code: 920
• Description: Fuser Error
• Remedy: Indicates that the fuser is below temperature when printing. 1 Fuser lamp (incorrect lamp/ 925 Service Error) Install the correct voltage and wattage lamp or fuser assembly. See “Fuser assembly removal”. If the correct fuser lamp is installed and the 925 error remains, the fuser may have reached standby temperature too quickly. Check that the line voltage is not exceeding the maximum rating for the printer. 2 Fuser lamp fuser top cover assembly Observe the lamp through the left side frame. If the lamp does not come on, do the following: • Remove the redrive assembly. • Remove the fuser assembly, disconnect the LVPS to fuser AC cable from the fuser assembly, and remove the fuser. See “Fuser assembly removal” • Verify that the lamp is installed correctly. If correct, check the continuity of the fuser top cover assembly by verifying the lamp contacts on the right contact assembly. If incorrect, check continuity of the fuser lamp. If incorrect, replace the lamp. If correct, replace the fuser top cover assembly. 3 LVPS LVPS to fuser AC cable CAUTION: When taking measurements for AC power, observe all safety precautions. Measure the AC line voltage between the two connectors on the fuser end of the LVPS to fuser AC cable. If the voltage is incorrect, turn the power off, and remove the LVPS. Measure the AC line voltage between pins CN1-1 and CN1-3 on the board. If correct, check the continuity of the LVPS to fuser AC cable. If incorrect, replace the cable. If the AC line voltage at CN1 is incorrect, check fuse F2. If the fuse is blown, replace the fuse. If the fuse is not blown, replace the LVPS assembly.

• Code: 921
• Description: Fuser Error
• Remedy: Indicates that the fuser is below standby temperature when the printer is idle. 1 Fuser lamp (incorrect lamp/ 925 Service Error) Install the correct voltage and wattage lamp or fuser assembly. See “Fuser assembly removal”. If the correct fuser lamp is installed and the 925 error remains, the fuser may have reached standby temperature too quickly. Check that the line voltage is not exceeding the maximum rating for the printer. 2 Fuser lamp fuser top cover assembly Observe the lamp through the left side frame. If the lamp does not come on, do the following: • Remove the redrive assembly. • Remove the fuser assembly, disconnect the LVPS to fuser AC cable from the fuser assembly, and remove the fuser. See “Fuser assembly removal” • Verify that the lamp is installed correctly. If correct, check the continuity of the fuser top cover assembly by verifying the lamp contacts on the right contact assembly. If incorrect, check continuity of the fuser lamp. If incorrect, replace the lamp. If correct, replace the fuser top cover assembly. 3 LVPS LVPS to fuser AC cable CAUTION: When taking measurements for AC power, observe all safety precautions. Measure the AC line voltage between the two connectors on the fuser end of the LVPS to fuser AC cable. If the voltage is incorrect, turn the power off, and remove the LVPS. Measure the AC line voltage between pins CN1-1 and CN1-3 on the board. If correct, check the continuity of the LVPS to fuser AC cable. If incorrect, replace the cable. If the AC line voltage at CN1 is incorrect, check fuse F2. If the fuse is blown, replace the fuse. If the fuse is not blown, replace the LVPS assembly.

• Code: 922
• Description: Fuser Error
• Remedy: Fuser failed to reach standby temperature. 1 Fuser lamp (incorrect lamp/ 925 Service Error) Install the correct voltage and wattage lamp or fuser assembly. See “Fuser assembly removal”. If the correct fuser lamp is installed and the 925 error remains, the fuser may have reached standby temperature too quickly. Check that the line voltage is not exceeding the maximum rating for the printer. 2 Fuser lamp fuser top cover assembly Observe the lamp through the left side frame. If the lamp does not come on, do the following: • Remove the redrive assembly. • Remove the fuser assembly, disconnect the LVPS to fuser AC cable from the fuser assembly, and remove the fuser. See “Fuser assembly removal” • Verify that the lamp is installed correctly. If correct, check the continuity of the fuser top cover assembly by verifying the lamp contacts on the right contact assembly. If incorrect, check continuity of the fuser lamp. If incorrect, replace the lamp. If correct, replace the fuser top cover assembly. 3 LVPS LVPS to fuser AC cable CAUTION: When taking measurements for AC power, observe all safety precautions. Measure the AC line voltage between the two connectors on the fuser end of the LVPS to fuser AC cable. If the voltage is incorrect, turn the power off, and remove the LVPS. Measure the AC line voltage between pins CN1-1 and CN1-3 on the board. If correct, check the continuity of the LVPS to fuser AC cable. If incorrect, replace the cable. If the AC line voltage at CN1 is incorrect, check fuse F2. If the fuse is blown, replace the fuse. If the fuse is not blown, replace the LVPS assembly.