Canon IRC 3380 e840-0000

[JVC]

I have an irc 3380 with an e840-ooo code. Reading the posts it looks like it is the shutter in the fuser. Is it just a matter of putting the shutter in the correct home position or is there something I should look for. I have tried moving the shutter in just about every position and it goes through warm up until I hear what I think is the shutter moving and then I hear it locks up and then I get the code.

Any help would be greatly appreciated.

Joe

[northernlife]

Re: Canon IRC 3380 e840-0000

e840. Two fans on the right door exhausting the fuser. At bootup they should be turning. If they aren't see if there's something causing it to not turn. If they turn freely then it's a DC Driver board. Part number FM2-8264-000.

[Canuck]

Re: Canon IRC 3380 e840-0000

E-840 has nothing to do with the fans. Yes those fans cool the ends but the code has to do with the shutter. It is either hanging up mechanically or the photo-interrupts that monitor their positions(home and position) is bad,wiring,etc. Swap the photo-interrupts with another one and see if code changes. Could have a bad shutter motor also

[northernlife]

Re: Canon IRC 3380 e840-0000

I stand corrected that'd be an e805-0001/2. Chances are he changed the LFR/UFR and popped out one of the two sensors, hell I do it once a month myself.

E-840 has nothing to do with the fans. Yes those fans cool the ends but the code has to do with the shutter. It is either hanging up mechanically or the photo-interrupts that monitor their positions(home and position) is bad,wiring,etc. Swap the photo-interrupts with another one and see if code changes. Could have a bad shutter motor also

[teckat]

Re: Canon IRC 3380 e840-0000

NOTE:
Go into service mode = copier / option / body / FN-ENTMP set it to -4.

Error detection of fixing end cooling system

Shutter Fan Position Drive Control
The duct that passes air has a shutter mechanism to enable sending air to the ideal area of the fixing film by
opening/closing the shutter by 6 steps (from full-close to full-open) according to the paper size.
The shutter opening/closing position that corresponds the paper size has 7-point (A4R, LTRR, B4, EXE, K8, LTR, home
position).
Open/close positions of the shutter is detected by the fan shutter HP sensor (PS28) and fan shutter position
sensor (PS29). When sub-thermistor 1 (TH2) detects temperature listed below, fan shutter motor (M15) is
rotated until the fan shutter HP sensor detects the shutter. And then, positive rotation of the fan shutter motor
(M15) is initiated and the shutter is moved to a position corresponds to the paper size chosen. The fan shutter
motor is reversely rotated in the last-rotation period, and the shutter is returned to the home position. If paper
size is changed during continuous printing, the shutter is returned to its home position first and then the shutter
is moved to a position corresponds to the paper size chosen.


a. Fault of end cooling fan
(1) Timing of detection
Implement detection at each time of end cooling fan ON.
(2) Error determination
Error determination is made when the lock signal of the fan has not been ON for one continuous second.
(3) Operation after detection
Display the following message on control panel.
"Check fixing unit cooling mechanism. Call service rep".
At this time, this control is not done, and the down sequence is controlled though the print operation can be continued (control that lengthens between paper and drops the print speed).

b. Unclear position of fan shutter opening/closing
(1) Timing of detection
- At the time of operation of fixing end cooling (using small-sized papers and during raising temperature of
fixing end)
- At the time of changing paper size (small size to/from large size)
- At the time of completing printing
(2) Error determination
If 2000msec or more of the input value of fan shutter detection sensor cannot be detected at the time of moving
fan shutter to the determined position, error is determined.
(3) Operation after detection
"Check fixing unit cooling mechanism. Call service rep".
At this time, this control is not done, and the down sequence is controlled though the print operation can be
continued (control that lengthens between paper and drops the print speed).
c. Unclear fan shutter HP
(1) Timing of detection
- At the time of power ON
- At the time of operation of fixing end cooling (using small-sized papers and during raising temperature of
fixing end)
- At the time of changing paper size (small size to/from large size)
- At the time of completing printing
(2) Error determination
If 2000msec or more of the input value of fan shutter HP sensor cannot be detected at the time of moving fan
shutter to the determined position, error is determined.
(3) Operation after detection
Stop printing, display the following error message on control panel.

Error code:
E840-0000: Edge Cooling Fan (front and rear) Error

[JVC]

Re: Canon IRC 3380 e840-0000

Thank you for the help. It was the sensors.

[northernlife]

Re: Canon IRC 3380 e840-0000

Snapped out of place when you changed the LFR?

[JVC]

Re: Canon IRC 3380 e840-0000

I think so. They looked like they were in place but I tried swapping them and made sure they were seated.

[canonbundy]

Re: Canon IRC 3380 e840-0000

Just to add to this POST, there is a Fan located behind the Fixing assy and linked to the Shutter assy, the Fan which is about 7" long binds and does not cool effectively when the Shutter is activated thereby giving E840 - a drop of light lube on the Rubber spindle shaft holders will allow the fan to spin freely again.

[Canuck]

Re: Canon IRC 3380 e840-0000

NOTE:
Go into service mode = copier / option / body / FN-ENTMP set it to -4.

Error detection of fixing end cooling system

Shutter Fan Position Drive Control
The duct that passes air has a shutter mechanism to enable sending air to the ideal area of the fixing film by
opening/closing the shutter by 6 steps (from full-close to full-open) according to the paper size.
The shutter opening/closing position that corresponds the paper size has 7-point (A4R, LTRR, B4, EXE, K8, LTR, home
position).
Open/close positions of the shutter is detected by the fan shutter HP sensor (PS28) and fan shutter position
sensor (PS29). When sub-thermistor 1 (TH2) detects temperature listed below, fan shutter motor (M15) is
rotated until the fan shutter HP sensor detects the shutter. And then, positive rotation of the fan shutter motor
(M15) is initiated and the shutter is moved to a position corresponds to the paper size chosen. The fan shutter
motor is reversely rotated in the last-rotation period, and the shutter is returned to the home position. If paper
size is changed during continuous printing, the shutter is returned to its home position first and then the shutter
is moved to a position corresponds to the paper size chosen.


a. Fault of end cooling fan
(1) Timing of detection
Implement detection at each time of end cooling fan ON.
(2) Error determination
Error determination is made when the lock signal of the fan has not been ON for one continuous second.
(3) Operation after detection
Display the following message on control panel.
"Check fixing unit cooling mechanism. Call service rep".
At this time, this control is not done, and the down sequence is controlled though the print operation can be continued (control that lengthens between paper and drops the print speed).

b. Unclear position of fan shutter opening/closing
(1) Timing of detection
- At the time of operation of fixing end cooling (using small-sized papers and during raising temperature of
fixing end)
- At the time of changing paper size (small size to/from large size)
- At the time of completing printing
(2) Error determination
If 2000msec or more of the input value of fan shutter detection sensor cannot be detected at the time of moving
fan shutter to the determined position, error is determined.
(3) Operation after detection
"Check fixing unit cooling mechanism. Call service rep".
At this time, this control is not done, and the down sequence is controlled though the print operation can be
continued (control that lengthens between paper and drops the print speed).
c. Unclear fan shutter HP
(1) Timing of detection
- At the time of power ON
- At the time of operation of fixing end cooling (using small-sized papers and during raising temperature of
fixing end)
- At the time of changing paper size (small size to/from large size)
- At the time of completing printing
(2) Error determination
If 2000msec or more of the input value of fan shutter HP sensor cannot be detected at the time of moving fan
shutter to the determined position, error is determined.
(3) Operation after detection
Stop printing, display the following error message on control panel.

Error code:
E840-0000: Edge Cooling Fan (front and rear) Error

Yeah this works when you get the "check cooling fans" message and machine slows down(down sequence mode to dissipate heat from ends)