Canon LBP 2460 Service Manual - Page 262

M-19 No Paper Pick-Up from Envelope feeder, Action, M-20 No Paper Pick-Up from Paper deck, M-21

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CHAPTER 4 M-19 No Paper Pick-Up from Envelope feeder 1. Video controller PCB is defective. Action: Use the printer driver tester to make a test print from the envelope feeder. If the envelope is picked up correctly from the envelope feeder, replace the video controller PCB. 2. Gears are damaged. Action: Remove the envelope feeder and check the gears. Replace any damaged gears. 3. The envelope feeder pick-up motor is defective. Action: Use the printer driver tester to rotate the envelope feeder pick-up motor. If it does not rotate, replace it. 4. The envelope feeder driver PCB is defective. Action: Replace the envelope feeder driver PCB. 5. The DC controller PCB is defective. Action: Replace the DC controller PCB. M-20 No Paper Pick-Up from Paper deck 1. Damaged part in the paper pick-up drive unit. Action: Remove the pick-up unit and replace any damaged parts. 2. Faulty pick-up solenoid Action: Remove pick-up solenoid connector J115. Measure the resistance between connectors J115-1 and J115-2 on the cable side. If it is not about 190 , replace the pick-up solenoid. 3. Defective pick-up motor Action: Load one sheet of paper into the paper deck. Then after shorting jumpers JP201-2 (TEST-1) and JP201-1 (GND) on the paper deck driver PCB, turn the printer power switch ON. If the pick-up motor does not rotate at that time, replace the motor. 4. Defective paper deck driver PCB Action: Replace the paper deck driver PCB. 5. Defective option controller PCB. Action: Replace the option controller PCB. 6. Defective video controller PCB. Action: Replace the video controller PCB. M-21 Registration Roller not rotating (printer) 4 - 48

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M-19 No Paper Pick-Up from Envelope feeder
<Possible causes>
1.
Video controller PCB is defective.
Action:
Use the printer driver tester to make a test print from the envelope feeder.
If the
envelope is picked up correctly from the envelope feeder, replace the video
controller PCB.
2.
Gears are damaged.
Action:
Remove the envelope feeder and check the gears.
Replace any damaged gears.
3.
The envelope feeder pick-up motor is defective.
Action:
Use the printer driver tester to rotate the envelope feeder pick-up motor.
If it does
not rotate, replace it.
4.
The envelope feeder driver PCB is defective.
Action:
Replace the envelope feeder driver PCB.
5.
The DC controller PCB is defective.
Action:
Replace the DC controller PCB.
M-20 No Paper Pick-Up from Paper deck
<Possible causes>
1.
Damaged part in the paper pick-up drive unit.
Action:
Remove the pick-up unit and replace any damaged parts.
2.
Faulty pick-up solenoid
Action:
Remove pick-up solenoid connector J115.
Measure the resistance between
connectors J115-1 and J115-2 on the cable side.
If it is not about 190 , replace the
pick-up solenoid.
3.
Defective pick-up motor
Action:
Load one sheet of paper into the paper deck.
Then after shorting jumpers JP201-2
(TEST-1) and JP201-1 (GND) on the paper deck driver PCB, turn the printer power
switch ON.
If the pick-up motor does not rotate at that time, replace the motor.
4.
Defective paper deck driver PCB
Action:
Replace the paper deck driver PCB.
5.
Defective option controller PCB.
Action:
Replace the option controller PCB.
6.
Defective video controller PCB.
Action:
Replace the video controller PCB.
M-21 Registration Roller not rotating (printer)
<Possible causes>
CHAPTER 4
4 - 48