Remedy: 3rd Roll Deck 1 Is the 3rd Roll Deck opened? Yes Close it. Micro Switches (MS6A and MS6B) 2 Is each Micro Switch firmly pressed when you close the 3rd Roll Deck? No Replace the Micro Switch. Yes Install the 3rd Roll Deck to the machine properly. Roll Feeder PCB (PW6623) 3 Check the voltage at J253-6 on the Roll Feeder PCB with a multi-meter. Is it 0V when the 3rd Roll Deck is closed? No Check whether or not any wire is broken between Roll Feeder PCB and Micro Switches (MS6A and MS6B). Yes Replace the Roll Feeder PCB with the new one.
Code: U-04
Description: 4th Roll Deck Open Error
Causes: The 4th Roll Deck is opened.
Remedy: 4th Roll Deck 1 Is the 4th Roll Deck opened? Yes Close it. Micro Switches (MS7A and MS7B) 2 Is each Micro Switch firmly pressed when you close the 4th Roll Deck? No Replace the Micro Switch. Yes Install the 4th Roll Deck to the machine properly. Roll Feeder PCB (PW6623) 3 Check the voltage at J253-8 on the Roll Feeder PCB with a multi-meter. Is it 0V when the 4th Roll Deck is closed? No Check whether or not any wire is broken between Roll Feeder PCB and Micro Switches (MS7A and MS7B). Yes Replace the Roll Feeder PCB with the new one.
Code: U-05
Description: Upper Frame / Upper Cover 1 Open Error
Causes: 1. The Upper Frame Assembly is opened. 2. The Upper Cover 1 is opened.
Remedy: Upper Frame Assembly 1 Is the Upper Frame Assembly opened? Yes Close it. Upper Cover 1 2 Is the Upper Cover 1 opened? Yes Close it. Micro Switches (MS1A, MS1B and MS2) 3 Check the voltage at J106-7 on the AC Terminal PCB (PW6610) with a multi-meter. (Check switches in the order as MS1A, MS1B and MS2.) Is it 24Vdc? No Replace the defective switch with the new one. AC Terminal PCB (PW6610) 4 Check the voltage at J105-8 on the AC Terminal PCB (PW6610) with a multi-meter. Is it 0Vdc? No Replace the AC Terminal PCB with the new one. Wires 5 Check the wires among AC Terminal PCB, DC Driver PCB and DC Controller PCB. Are wires connected properly? No Connect the wires properly Yes Replace the DC Controller PCB with the new one.
Code: U-06
Description: Heater Unit Open Error
Causes: Heater Unit is opened.
Remedy: Heater Unit 1 Is the Heater Unit opened? Yes Close it. Micro Switches (MS3A and MS3B) 2 Check the voltage at J106-4 on the AC Terminal PCB (PW6610) with a multi-meter. (Check switches in the order as MS3A and MS3B.) Is it 24Vdc? No Replace the defective switch with the new one. AC Terminal PCB (PW6610) 3 Check the voltage at J105-7 on the AC Terminal PCB (PW6610) with a multi-meter. Is it 0Vdc? No Replace the AC Terminal PCB with the new one. Wires 4 Check the wires between AC Terminal PCB and DC Controller PCB. Are wires connected properly? No Connect the wires properly Yes Replace the DC Controller PCB with the new one.