Remedy: Open / unlock 1 Is the Fuser Cover opened or unlocked? Yes Close it firmly. Harness 2 Is the harness correctly connected to the Fuser Cover Switch (DSW1ST) and the I/O B PCB? No Connect it. Door Switch (DSW1ST) 3 Check the status of open/close signal of the Fuser Cover (signal code : 10A) in the Input Signal Monitoring Mode. Does the signal status change if the Fuser Door is opened or closed? No 1. Reinstall the Fuser Door Switch correctly. 2. Replace the Fuser Door Switch. I/O B PCB (PW10722) 4 Can the problem be fixed by replacing the I/O B PCB? Yes OK Main Control PCB (PW10720) 5 Can the problem be fixed by replacing the Main Control PCB? Yes OK
Code: U-0131
Description: Fuser Upper Cover open
Causes:
Remedy: Open / unlock 1 Is the Fuser Upper Cover opened or unlocked? Yes Close it firmly. Harness 2 Is the harness correctly connected to the drawer connector (J352) of the Fuser Upper Cover Switch and the I/O A PCB? No Connect it. I/O A PCB (PW10721) 3 Can the problem be fixed by replacing the I/O A PCB? Yes OK Main Control PCB (PW10720) 4 Can the problem be fixed by replacing the Main Control PCB? Yes OK
Code: U-0140
Description: Waste Toner Door open
Causes:
Remedy: Open / unlock 1 Is the Waste Toner Door opened or unlocked? Yes Close it firmly. Harness 2 Is the harness correctly connected to the Waste Toner Door Switch (TSW) and the I/O B PCB? No Connect it. Waste Toner Door Switch (TSW) 3 Check the status of open/close signal of the Waste Toner Door (signal code : 10C) in the Input Signal Monitoring Mode. Does the signal status change if the Waste Toner Door is opened or closed? No 1. Reinstall the Waste Toner Door Switch correctly. 2. Replace the Waste Toner Door Switch. I/O A PCB (PW10721) 4 Can the problem be fixed by replacing the I/O A PCB? Yes OK Main Control PCB (PW10720) 5 Can the problem be fixed by replacing the Main Control PCB? Yes OK
Code: U-0141 ... U-0144
Description: Process Unit 1- 4 open
Causes: U-0141 : Process Unit 1 U-0142 : Process Unit 2 U-0143 : Process Unit 3 U-0144 : Process Unit 4
Remedy: Open / unlock 1 Is the concerning Process Unit opened or unlocked? Yes Close it firmly. Harness 2 Is the harness correctly connected to the drawer connector of the concerning Process Unit and the I/O B PCB? Concerning drawer connectors are; J322-A : Process Unit 1 J322-B : Process Unit 2 J322-C : Process Unit 3 J322-D : Process Unit 4 No Connect it. I/O A PCB (PW10721) 3 Can the problem be fixed by replacing the I/O A PCB? Yes OK Main Control PCB (PW10720) 4 Can the problem be fixed by replacing the Main Control PCB? Yes OK
Code: U-0150
Description: Waste Toner Box is not set
Causes:
Remedy: Open / unlock 1 Is the Waste Toner Box installed? Yes Close it firmly. Harness 2 Is the harness correctly connected to the Waste Toner Box Switch (BSW) and the I/O B PCB? No Connect it. Waste Toner Box Switch (BSW) 3 Check the status of open/close signal of the Waste Toner Box (signal code : 206) in the Input Signal Monitoring Mode. Does the signal status change if the Waste Toner Box is removed or installed? No 1. Reinstall the Waste Toner Box Switch correctly. 2. Replace the Waste Toner Box Switch. I/O A PCB (PW10721) 4 Can the problem be fixed by replacing the I/O A PCB? Yes OK Main Control PCB (PW10720) 5 Can the problem be fixed by replacing the Main Control PCB? Yes OK