• Code: 937.51
• Description: Overspeed detected during position control. Motor is type 1.
• Causes: • Faulty motor sensor • Faulty system board
• Remedy:

• Code: 937.7
• Description: Loss of lock detected by higher level code. Motor is type 0.
• Causes: • Defective motor cable • Defective main drive motor • Paper jams
• Remedy:

• Code: 937.71
• Description: Loss of lock detected by higher level code. Motor is type 1.
• Causes: • Defective motor cable • Defective main drive motor • Paper jams
• Remedy:

• Code: 937.80
• Description: Driver over temperature detection. Motor is type 0.
• Causes: • Excessive gear loading in gearbox assembly
• Remedy:

• Code: 939.00
• Description: RIP–engine communications lost.
• Causes: System board
• Remedy: POR the printer several times, if the error code continues to be displayed, replace the system board.

• Code: 940.00
• Description: LVPS zero-crossing test failed.
• Causes: • Incorrect LVPS installed • Noisy AC power source • LVPS to system board cable loose
• Remedy: Check to make sure the correct LVPS assembly has been installed. If the correct supply is installed, check to make sure the LVPS to system board cable is installed correctly. If correct, replace the LVPS assembly.

• Code: 947.00
• Description: PQET RAM test incomplete, PQET RAM test did not complete, PQET RAM test failed MARCH0 PQET RAM test failed MARCH1 PQET RAM test busy failure
• Causes: PQET failed to pass RAM tests on the system board
• Remedy: Replace the system board.

• Code: 948.00
• Description: Pel clock check failed
• Causes: System board
• Remedy: Replace the system board.