Canon ImageRunner c250if - fan stuck signal even though fan is rotating

[barakm]

Hi everyone, and thank you for your continuous help.

I'm not a technician, just an enthusiast. I got myself an IR c250if machine that I'm trying to repair.

I replaced the fuser assembly driver, which was faulty, but during the process I believe I damaged one (or more) of the cables/harnesses
on the DC board.

I'm getting an E004-0000 error - fan stuck.

The fan works just fine, so my guess the "fan stuck" signal path/cable was damaged when I disconnected the cables.

And indeed, disconnecting the purple cables was horrible - I couldn't manage to pull them out easily. I ended up "prying" their
sides with sharp tweezers.

Adding to this, I also think that I damaged the signal coming out of the "output tray full" sensor,
since I get an "output tray full" message.

So, my questions:

1. For future reference: how should I safely pull the harnesses connected to the purple wires?
2. Can I get these wires somewhere? maybe from a decommissioned machine?
3. Do you know which connectors I should check, or how I can trace the signal of the fan stuck so I know where it breaks? [I have a multimeter and a scope. Problem is that the main board is "in the way" and I can't reach the DC board while the machine is operating]
4. The "fan stuck" signal - is it "active on low", in the sense that "fan is stuck when signal breaks" ?

Any help/guidance will be much appreciated.

Thank you very much and sorry for being so lengthy.. I'm just a bit frustrated... :-)

- Barak

[wcanonw]

Re: Canon ImageRunner c250if - fan stuck signal even though fan is rotating

hello, good afternoon, where do you conclude that the fan generates the error E004 0000, here, reviewing the service manual, only related errors such as E004-0001 and E004-0002 appear:confundido:

[wcanonw]

Re: Canon ImageRunner c250if - fan stuck signal even though fan is rotating

• Code: E004-0001
• Description:Fixing Relay welding detection error
  Zero cross interruption was detected although the Fixing Relay was not turned ON.
• Remedy:[Remedy] Replace the Low-voltage Power Supply PCB. (Unit of replacement: POWER SUPPLY ASSEMBLY) [Caution] Since an electrical trouble due to error in fixing safety circuit relay is the cause of the error, be sure to replace the Low-voltage Power Supply PCB.

• Code: E004-0002
• Description:Fixing Main Thermistor and Fixing Sub Thermistor (Rear) disconnection detection error
  Connection could not be detected within 0.5 sec when power was supplied to the Fixing Heater.
• Remedy:[Related parts] - Fixing Assembly (Unit of replacement: Fixing Assembly) - Harness between the Fixing Drawer (DR01/J5401) and the DC Controller PCB (UN04/J134) (Unit of replacement: INTERLOCK ASSEMBLY) - DC Controller PCB (UN04) (Unit of replacement: DC CONTROLLER PCB ASSEMBLY) [Points to note at work] When checking the harness/cable or connector, perform the following work. 1. Disconnect and then connect the connector to check that there is no bent pin and cable disconnection. 2. Visually check that the harness is not caught or open circuit. 3. If there is any error, replace the corresponding harness/cable. [Remedy] Check/replace the related parts. [Reference] Before replacing the DC Controller PCB, back up the service mode data (approx. 2 min) and restore the backup data after the replacement so the data may be able to be protected. - Backup: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMBUP - Restoration: COPIER (LEVEL2)> FUNCTION> SYSTEM> DSRAMRESThe error that happens to you does not exist in the service manual, possibly it is related to the fuser unit or check the errors related to E004
  

[barakm]

Re: Canon ImageRunner c250if - fan stuck signal even though fan is rotating

Apologies.... I had a typo in the error number

The error number is e804-000: Power Supply Cooling Fan error

Description: It was detected that the Power Supply Cooling Fan was locked.

Remedy:
[Related parts]- Harness between the Low-voltage Power Supply PCB (UN01/J323) and the Power Supply Cooling Fan (FM05/J5215) (Unit of replacement: CABLE, POWER SUPPLY)- Harness between the Low-voltage Power Supply PCB (UN01/J321) and the Main Controller PCB (UN81/J7010) (Unit of replacement: CABLE, POWER SUPPLY)- Power Supply Cooling Fan (FM05)- Low-voltage Power Supply PCB (UN01) (Unit of replacement: POWER SUPPLY ASSEMBLY)- Main Controller PCB (UN81) (Unit of replacement: MAIN CONTROLLER PCB ASSEMBLY)[Points to note at work] When checking the harness/cable or connector, perform the following work.1. Disconnect and then connect the connector to check that there is no bent pin and cable disconnection.2. Visually check that the harness is not caught or open circuit.3. If there is any error, replace the corresponding harness/cable.[Remedy] Check/replace the related parts

As I wrote in my original post, the fan is turning and seems to be working fine.
I believe I damaged a cable/harness that carries the lock signal.

My questions:
1. For future reference: how should I safely pull the harnesses connected to the purple wires?
2. Can I get these wires somewhere? maybe from a decommissioned machine?
3. Do you know which connectors I should check, or how I can trace the signal of the fan stuck so I know where it breaks? [I have a multimeter and a scope. Problem is that the main board is "in the way" and I can't reach the DC board while the machine is operating]
4. The "fan stuck" signal - is it "active on low", in the sense that "fan is stuck when signal breaks" ?


Thank you so much,

- Barak

[wcanonw]

Re: Canon ImageRunner c250if - fan stuck signal even though fan is rotating

FK4-0815-000 ventilador fm05

in the service manual write general circuit diagram and then locate the fan Fm05

[barakm]

Re: Canon ImageRunner c250if - fan stuck signal even though fan is rotating

Hi,

So I started inspecting the path from the fan, and I think I found the problem.
The leftmost pin on J321 on the low voltage PCB was damaged.
Apparently, when I replaced the connector into the socket the pins wasn't
aligned with the socket, and I "pushed it in" (See picture...).

Any idea how to continue from here?
Can the socket be fixed? If not - do you happen to know where I can find such a socket?

Any help will be highly appreciated.

Thanks,

- Barak

PXL_20230215_022842650-min.jpg

[wcanonw]

Re: Canon ImageRunner c250if - fan stuck signal even though fan is rotating

[ATTACH=CONFIG]56866[/ATTACH]

Hello, take that card out and take it to an electronic center to repair it or adapt the broken pin or else get another new card or a working machine from a nearby provider

[wcanonw]

Re: Canon ImageRunner c250if - fan stuck signal even though fan is rotating

the pin seems to be sunk

[barakm]

Re: Canon ImageRunner c250if - fan stuck signal even though fan is rotating

Hi!

Quick update:

The leftmost pin was damaged. Probably when I put the connector back into its socket.
I took the board out of its chassis, pushed the pin back to its place, soldered it and now everything works just fine.

Thank you very much for your help !

- Barak