Canon LBP 2460 Service Manual - Page 255
Action, M-3 Fixing unit failure wrong type, M-4 BD/Laser Malfunction, M-5 Scanner Motor Malfunction
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CHAPTER 4 Action: Replace the DC controller PCB. M-3 Fixing unit failure (wrong type) 1. The rated voltage of the fixing unit does not match the power supply voltage. Action: Replace the fixing unit. 2. The type detection circuit in the power supply is defective. Action: Replace the power supply. 3. The DC controller PCB is defective. Action: Replace the DC controller PCB. M-4 BD/Laser Malfunction 1. Condensation Action: Leave the printer running for 10 to 20 minutes. 2. The BD signal line connector is loose. Action: Reconnect connector J6 on the BD PCB and J206 on the DC controller PCB. 3. The laser drive signal line connectors are loose. Action: Reconnect connector J1001 on the laser driver PCB, and connector J202 on the DC controller PCB. 4. The laser/scanner unit is defective. (The BD signal is not output correctly.) Action: Replace the laser/scanner unit. 5. The DC controller PCB is defective. Action: Replace the DC controller PCB. M-5 Scanner Motor Malfunction 1. The scanner motor drive line connectors are loose. Action: Reconnect connector J1 on the scanner driver PCB, terminal connector J18, and connector J207 on the DC controller PCB. 2. The scanner motor driver is defective. Action: Use the printer driver tester to rotate the scanner motor. If it does not rotate, replace the laser/scanner unit. 3. The DC controller PCB is defective. Action: Replace the DC controller PCB. 4 - 41