Canon LBP 2460 Service Manual - Page 256
M-6 Faulty Main Motor, Action, M-7 Fixing Unit/Scanner Fan FM1 Failure, M-8 Power Supply Fan FM2
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Page 256 highlights
CHAPTER 4 M-6 Faulty Main Motor 1. The main motor drive line connectors are loose. Action: Reconnect connector J12 of the main motor and connector J218 on the DC controller PCB. 2. The door switch in the switch/sensor PCB is defective. Action: Remove connectors J205 and J221 on the DC controller PCB. If J205-3 (+24V) and J221-1 (+24VB) on the cable side do not conduct when the door switch (SW1401) is on, replace the switch/sensor PCB. 3. The main motor is defective. Action: Use the printer driver tester to rotate the main motor. If it does not rotate, replace it. 4. The DC controller PCB is defective. Action: Replace the DC controller PCB. M-7 Fixing Unit/Scanner Fan (FM1) Failure 1. The FM1 drive signal line connector is loose. Action: Reconnect connector J208 on the DC controller PCB. 2. The fixing unit/scanner fan is defective. Action: Disconnect connector J208 on the DC controller PCB. Turn the power switch ON and measure the voltage between connector J208-1 (FAN1D) and J208-3 (GND) on the DC controller PCB. If the voltage changes from 0 to more than 18V, replace the fixing unit/scanner fan. 3. The DC controller PCB is defective. Action: Replace the DC controller PCB. M-8 Power Supply Fan (FM2) Failure 1. The FM2 drive signal line connector is loose. Action: Reconnect connector J216 on the DC controller PCB. 2. The power supply fan is defective. Action: Disconnect connector J216 on the DC controller PCB. Turn the power switch ON and measure the voltage between connector J216-1 (FAN2D) and J216-3 (GND) on the DC controller PCB. If the voltage changes from 0 to more than 18V, replace the power supply fan. 3. The DC controller PCB is defective. Action: Replace the DC controller PCB. 4 - 42
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