• Code: T32
• Display: T32-LED Over Temp Error
• Description: One of the LED bars is reporting a temperature error. Turn off the printer, wait 15 seconds, then turn on the printer.
• Remedy: 1. Ensure all the chassis cooling fan is operating and is not blocked. 2. Ensure the printer is operating in the correct temperature environment; the printer’s Service Menu : Print Diag Summary test page lists the ambient temperature sensed by the printer. 3. Replace the LED heads. 4. Replace the engine controller board.

• Code: U0
• Display: U0-Engine ROM Error
• Description: During the printer’s self diagnostics there was a problem reading the engine ROM. Turn off the printer, wait 15 seconds, then turn on the printer.
• Remedy: 1. Turn the printer off and then on 2. Reset the printer NVRAM using the procedure “Resetting NVRAM”. Replace the engine controller board.

• Code: U1
• Display: U1-Engine RAM Error
• Description: During the printer’s self diagnostics there was a problem reading the engine RAM. Turn off the printer, wait 15 seconds, then turn on the printer.
• Remedy: 1. Turn the printer off and then on 2. Reset the printer NVRAM using the procedure “Resetting NVRAM”. Replace the engine controller board.

• Code: U10
• Display: U10-Roller Position Error
• Description: An error has been detected with the pinch rollers not being in the expected position. Turn off the printer, wait 15 seconds, then turn on the printer.
• Remedy: 1. Ensure the correct weight and type of paper is loaded in the currently used tray. Also ensure the paper is loaded correctly in the tray. 2. Clean the pick and registration rollers. 3. Ensure there are no obstructions in the paper path. 4. Test the registration motor and clutch as described in “Motor and clutch tests” on page 69. Replace the motor or clutch if necessary. 5. Inspect the wiring for the registration clutch and registration motor. 6. Replace the engine controller board.

• Code: U12
• Display: U12-Duplex I/F Error
• Description: An error has been detected with the duplex module interface and communication path. Make sure the Auto Duplex Unit is properly installed.
• Remedy: 1. Turn the printer off and on. 2. Pull out the duplexer and inspect its connector at the right front corner (the connector faces rearward). Inspect the printer’s corresponding connector on the printer chassis (covered by a flexible metal plate). 3. Inspect the wiring harness leading from the engine control board to the duplex unit connector. 4. Replace the duplex unit. 5. Replace the engine controller board.

• Code: U13
• Display: U13-Tray 3 I/F Error
• Description: An error has been detected with the Tray 3 interface and communication path. Turn off the printer, wait 15 seconds, then turn on the printer.
• Remedy: 1. Turn the printer off and then on. 2. Inspect the interface connector connecting the tray unit to the print engine. Inspect the printer’s corresponding connector on the underside of the printer. Inspect the wiring harness leading from the connector to the engine control board. 3. Replace the engine controller board.

• Code: U14
• Display: U14-Tray 2 I/F Error
• Description: An error has been detected with the Tray 2 interface and communication path. Turn off the printer, wait 15 seconds, then turn on the printer.
• Remedy: 1. Turn the printer off and then on. 2. Inspect the interface connector connecting the tray unit to the print engine. Inspect the printer’s corresponding connector on the underside of the printer. Inspect the wiring harness leading from the connector to the engine control board. 3. Replace the engine controller board.

• Code: U15
• Display: U15-Front Panel Error
• Description: An error has been detected with the front panel interface and communication path. Turn off the printer, wait 15 seconds, then turn on the printer.
• Remedy: 1. Turn the printer off and then on. 2. Reset the printer NVRAM using the procedure “Resetting NVRAM”. Replace the engine controller board.