Question about Sharp FO-4400 Fax

5 Answers

Print Quality Problem

It's a little hard to describe but we have a FO-4400 which is leaving a pattern of dots down the left 2/3 of the page. The dots are in a streak pattern rather like a bad wiper blade, but we changed the toner and drum and it didn't help.

We thought originally it was an electrical problem like the high voltage supply but once we saw the streaky nature of the defect we are beginning to doubt that that's what the problem is.

Has anyone seen this distinctive type of defect?

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  • 6 more comments 
  • charliep999 Jan 14, 2008

    This fax machine has a "rocker" type on/off switch, so it can't be held down for 5 sec.

    It has been used extensively, probably longer than 2 years.

    I scanned a printout of the problem but it was too big to post on this site. If you could let me know your e-mail (mine is charliep@toncha.com) I could e-mail you an image of the issue.

    Thanks for your help.

  • charliep999 Jan 15, 2008

    The marks are definitely appearing before the fuser. In fact, you can see that the drum unit is not being wiped clean after the print cycle. This goes over onto the transfer roller and so there is also toner on the back side of the page.

    I opened the shutter on the scanner and tried to clean inside. It didn't have any effect.

    I scanned a printout of the problem but it was too big to post on this site. If you could let me know your e-mail (mine is charliep@toncha.com) I could e-mail you an image of the issue.

  • charliep999 Jan 15, 2008

    I scanned a printout of the problem but it was too big to post on this site. If you could let me know your e-mail (mine is charliep@toncha.com) I could e-mail you an image of the issue.

  • charliep999 Jan 15, 2008

    By the developer drum do you mean the photo-conductor drum? Where is the defuser? Is it in the drum cartridge?

  • charliep999 Jan 15, 2008

    I think it uploaded and this is the link
    http://img89.imageshack.us/img89/8900/sh...

  • charliep999 Jan 15, 2008

    I'll have a tech check the voltages in the morning.

    I'll have to fix the jpg at home and upload it tomorrow.

    Thanks.

  • charliep999 Jan 15, 2008

    Yes we've cleaned it with a vacuum.

    I can e-mail a scanned copy of the print defect. My e-mail is charliep@toncha.com.

    Thanks for your help.

  • charliep999 Jan 15, 2008

    Thanks for all your advice. I threw in the towel about lunch and took the fax to a Sharp dealer. Their Field Service manager took one look at the printout and said to change the drum unit. I explained that this was a new drum unit. He said to get another new one anyhow. So we got a new drum cartridge and It fixed the problem immediately.

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5 Answers

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Did you bother to check the voltage on the image controll circuits??? i saw this problem already and it wasnt from the external power source, but from faulty components on the inside.. Have a technician chech the main power board , and if thats good, the circuit board that controlls the laser, image transferdrum and the toner displacemanet (called the image transfer circuit) I'b edt you'd find your problem there.. If he finds its the Controll Ic, id recommend that you get a replacement cause chances are you wont find the ic..

Another possible cayse is the Controll circuit it self which controlls how the image is to be printed is proberalluy damaged,, If this is the case you will need to replace the entire board or purchase a new one.. You will know this is the case if all else fails ...

Posted on Jan 15, 2008

  • 3 more comments 
  • Rishi Roshan Ali Jan 15, 2008

    If you want to upload AN IMAGE HERE ,,



    1.) SCAN IT AND SAVE IT AS A JPG..

    2.) REDUCE THE SIZE UNTIL ITS LESS THEAN 150kb

    3.) IN THE BOX WHERE YOU TYPE YOUR MESSAGES THERE ARE 6 ICONS TO THE TOP

    4.) THE SECOND ICON IS THE IMAGE UPLOD ICON CLICK IT

    5.) BROWSE AND FIND YOUR IMAGE

    6.) UPLOAD IT..

  • Rishi Roshan Ali Jan 15, 2008

    If you want to upload AN IMAGE HERE ,,



    1.) SCAN IT AND SAVE IT AS A JPG..

    2.) REDUCE THE SIZE UNTIL ITS LESS THEAN 150kb

    3.) IN THE BOX WHERE YOU TYPE YOUR MESSAGES THERE ARE 6 ICONS TO THE TOP

    4.) THE SECOND ICON IS THE IMAGE UPLOD ICON CLICK IT

    5.) BROWSE AND FIND YOUR IMAGE

    6.) UPLOAD IT..

  • Rishi Roshan Ali Jan 15, 2008

    BTW photo-conductor drum = image transfer drum

  • Rishi Roshan Ali Jan 15, 2008

    Thats a toner displacement problem ,, but you changed the toner and drum as well as cleaned it,, Its deffenately a problem with the board inside the machine.. You can check the voltages but i doubth that will help as i have seen the image i strongly believe its the main controller ic.. you can change the entire board,, but you might as well buy a new one.. listen to your tech tomorrow and see what he says..

  • Rishi Roshan Ali Jan 15, 2008

    sorry i meant image or toner displacement

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  • 135 Answers

Could you please upload a copy of the printout to http://www.imageshack.us/ and post a link here?

Posted on Jan 15, 2008

  • Yonatan Horan Jan 15, 2008

    It's impossible to see images when they're uploaded here as the resolution they're shown in is too small.

    Regarding the actual problem, have you tried cleaning the print compartment?

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  • 146 Answers

It sounds like you have a developer drum problem. If you replaced it then you need to clean the defuser. It's as long as the developer drum. If that doesn't solve the problem then you probably have a problem with with the dc voltage coming from your processor. You would need someone who services the unit to check for correct voltage and whether it would need replacing or not.

Posted on Jan 15, 2008

  • Kelly Sullivan Jan 16, 2008

    Yes the developer can be called a cartridge, drum, etc. It looks like you solved the problem. At times you can get a defective cartridge I have several times before and it will drive you nuts. Glad you got things fixed.

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Hi you usually get this problem if you are not using original cartridges if you are using originals then its probably software problem with the printer and this will mean taking to repair as they have software to reset printer and to test it are you 100% sure the print heads are clean as this can casue problems but this dont sound like the problem your having it sounds more like software problem.
Also this usually happens if the printer has been used often over couple of years if this is the case then their is nothing you can do but to replace the printer have you tried resetting the printer.
try holding down the on off button for about 5 sec this should reset the printer give this a try then try printing let me know how you get on ok

Posted on Jan 14, 2008

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  • 589 Answers

I would try stopping the print process in between the drum and the fuser. This will tell you if it is a laser / drum problem.

If the paper doesn't have the marks on it, look for a scratched / damaged fuser roller.

If it does still have the marks, most laser faxes have a thin strip of glass in between the laser unit and the drum. Some even have a small mirror. May just be a dirty glass / mirror.

Take out the new drum unit, and look for this glass. A flashlight will be helpful.

Posted on Jan 14, 2008

  • brian c
    brian c Jan 15, 2008

    I forgot to ask, is this when you are printing a fax, or copying something?

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Error sc 329


This is for a Ricoh copier. You did not indicate machine.

SC 329: Laser Beam Pitch Adjustment Error
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

The LD unit home position sensor does not detect an on condition while changing the LD unit position for correcting the LD position or changing the DPI.


Instructions from the Service Manual below...

.

5.4.3 LASER BEAM PITCH ADJUSTMENT
There are two laser beam pitch adjustment procedures: one for 400 dpi, and one
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1. Perform SP2-109-8 (Beam Pitch Data Reset).

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.

4.2.3 TEST PATTERN PRINTING (SP2-902)
NOTE: Do not operate the machine until the test pattern is printed out completely.
Otherwise, an SC may occur.

1. Access the SP mode which contains the test pattern you need.

2. Press exit, then touch the "Copy Mode" key on the operation panel to access
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3. Select the paper size.

4. Press the "Start" key to print the test pattern.

5. After checking the test pattern, exit copy mode by touching the "SP Mode" key.
Reset the test pattern to 0.

6. Exit the SP mode.

.
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No. Test Pattern
-
0 None
1 Grayscale 1
2 Grayscale 2
3 Grayscale 3
4 Grayscale 4
5 Grayscale 5
6 Vertical Lines (256-greyscale) 13 Cross Stitch (600 dpi)
7 Vertical Lines (1-dot)
8 Vertical Lines (2-dot)
9 Hatch Pattern
10 Cross Pattern
11 Slant Pattern
12 Cross Stitch (400 dpi)
.

Test Pattern Table (SP2-902-3: Test Pattern Printing - Printing)
No. Test Pattern
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0 None
1 Vertical Line (1-dot)
2 Horizontal Line (1-dot)
3 Vertical Line (2 dot)
4 Horizontal Line (2-dot)
5 Grid Pattern (Single-dot)
6 Grid Pattern (Double-dot)
7 Alternating Dot Pattern
8 Full Dot Pattern
9 Black Band
10 Trimming Area
11 Argyle Pattern
12 16 Grayscales (Horizontal)
13 16 Grayscales (Vertical)
14 16 Grayscales (Vert./Hor.)
15 16 Grayscales (Vert./Hor Overlay)
16 Not used
17 Horizontal Line (1-dot)
18 Grid Pattern (Single-dot)
19 Grid Pattern (Double-dot)
20 Alternating Dot Pattern
21 Blank Page

.

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However, these test procedures can indicate whether or not this is the problem with your printer.

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Trying to replace the black inck cartridge and cannot get the cartridge holder to stop at a position for me to pull out the old cartridge and insert the new cartridg. I've have an Epson Stylus NX1000...


Found this on the Web for Your Printer. You can download the Manual from Epson.
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http://files.support.epson.com/pdf/nx100_/nx100_qr.pdf
Checking the Print Head Nozzles
If your printouts are faint or have gaps in them, some of the nozzles in the print
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2. Turn off the NX100 Series.
3. Hold down the y Stop button as you press the P On button to turn the
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Cleaning the Print Head 21
4. Check the nozzle check pattern that prints to see if there are gaps in the lines.
5. If there are no gaps, the print head is clean. If there are gaps or the pattern is
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Cleaning the Print Head
If print quality has declined and the nozzle check pattern indicates clogged
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Note:
You cannot clean the print head if an ink cartridge is expended, and you may not be able
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1. Make sure the NX100 Series is on and the B ink light is off.
2. Hold down the y Stop button for three seconds to start the cleaning cycle,
which lasts around one minute.
Caution:
Never turn off the NX100 Series during head cleaning or you may damage it.
3. When the P On light stops flashing, run a nozzle check (as described on
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4. If there are still gaps or lines, or the test patterns are faint, run another
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Note:
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NX100 Series and wait at least six hours to let any dried ink soften. Then try cleaning
the print head again. If quality does not improve, one of the ink cartridges may need to
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If you do not use your NX100 Series often, it is a good idea to print a few pages at least
once a month to maintain good print quality.
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***hi there,il be willing to help you on that. ****
the nozzles of the printer might be clogged by dried inks thats why when your printing, its feeding the paper, as if its printing but no inks on the paper. print a nozzle check to see which part or color have clogs, if there are gaps or breaks, do head cleaning untill no more gaps then try printing.
Running a Printer Check
1. Load a few sheets of plain paper in the sheet feeder. 2. Turn off the Epson Stylus NX100 Series. 3. Hold down the nx100_tx100_ug.1.96.1.jpg Stop button as you press the nx100_tx100_ug.1.96.2.jpg On button to turn the Epson Stylus NX100 Series back on. Hold down both buttons until the nx100_tx100_ug.1.96.3.jpg On light begins to flash, then release the buttons. 1. Load a few sheets of plain paper in the sheet feeder. 2. Turn off the Epson Stylus NX100 Series. 3. Hold down the nx100_tx100_ug.1.96.1.jpg Stop button as you press the nx100_tx100_ug.1.96.2.jpg On button to turn the Epson Stylus NX100 Series back on. Hold down both buttons until the nx100_tx100_ug.1.96.3.jpg On light begins to flash, then release the buttons. 1. Load a few sheets of plain paper in the sheet feeder. 2. Turn off the Epson Stylus NX100 Series. 3. Hold down the nx100_tx100_ug.1.96.1.jpg Stop button as you press the nx100_tx100_ug.1.96.2.jpg On button to turn the Epson Stylus NX100 Series back on. Hold down both buttons until the nx100_tx100_ug.1.96.3.jpg On light begins to flash, then release the buttons. 4. Check the nozzle check pattern that prints to see if there are gaps in the lines. nx100_tx100_ug.1.96.5.jpg 5. If there are no gaps, the print head is clean and you can continue printing. If there are gaps or the pattern is faint, clean the print head. If your printouts are unexpectedly light, or dots or lines are missing, you may need to clean the print head. This unclogs the nozzles so they can deliver ink properly. Print head cleaning uses ink, so clean it only if quality declines.
You can also clean the print head by holding down the stop button on the printer for three seconds. (This only works when the red ink light is off.) Run a nozzle check to confirm that the print head is clean.
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1 Answer

Streaks on copy


Try these steps first:

1. Check ink level.


2. Nozzle Check Pattern
  1. Load A4- or letter-size plain paper in the Auto Sheet Feeder (ASF) or cassette.

  2. Press the <Feed Switch> button to select the appropriate paper source.

  3. Press <Menu> repeatedly until [MAINTENANCE] appears.

  4. Press <OK>.
    The machine prints a nozzle check pattern.

    bde48f2.jpg

  5. Confirm the pattern is not broken, missing, or a specific color is not printed.



3. Print Head Cleaning / Head Refreshing If the printed Nozzle Check Pattern is broken, missing, or a specific color is not printed, clean the print head.
  1. Press the <Menu> button on the printers operation panel repeatedly until [MAINTENANCE] appears in the LCD.

  2. Press the left [<] or right [>] arrow buttons to select the cleaning setting you want. Select [HEAD CLEANING] or [HEAD REFRESHING] for deep print head cleaning.

    Note: [HEAD REFRESHING] uses more ink than [HEAD CLEANING], so perform [HEAD REFRESHING] only when necessary.

  3. Press the <OK> button.

  4. Print a Nozzle Check Pattern and perform at least two Head Refreshings if the pattern is not correct.


You can also try using a higher quality print settings as follows:

Change the Print Quality Settings (Windows) The Quality setting controls how finely ink droplets are placed on the printed page. Depending on the type of paper being used a higher Print Quality setting does not always insure a better print. Print speed will decrease as the Print Quality setting is increased. Follow the instructions below to change the print quality settings in the Canon printer driver for the Windows operating system through a printing application.
  1. Click 'Properties' in the Print dialog box.

    Note: Depending on the Application software, 'Properties' may be displayed as 'Preferences'.

  2. Set the desired print quality in the 'Print Quality' section.

  3. Select 'High', 'Standard', or 'Draft / Fast'.
To set more detailed print quality settings, follow this procedure:
  1. Select 'Custom' and click 'Set'.

    cc8d5b7.jpg

  2. In the Set Print Quality dialog drag the slide bar from 'Fast' to 'Fine' to select the print quality.

    1bbaaa1.jpg

    Note: There are five options in 'Quality'. However, selectable options are limited depending on the media type.

  3. Select 'Auto', 'Dither', or 'Diffusion' from the 'Halftoning' section.


If the above steps do not solve your problem, it may be a time to purchase a new printhead.



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2 Answers

SC 329 code Aficio 550


SC 329: Laser Beam Pitch Adjustment Error
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

The LD unit home position sensor does not detect an on condition while changing the LD unit position for correcting the LD position or changing the DPI.


Instructions from the Service Manual below...

.

5.4.3 LASER BEAM PITCH ADJUSTMENT
There are two laser beam pitch adjustment procedures: one for 400 dpi, and one
for 600 dpi. These adjustments use the following SP modes.
· SP2-109-1: Laser Beam Pitch Adjustment – 400 dpi
· SP2-109-2: Laser Beam Pitch Adjustment – 600 dpi
· SP2-109-3: Laser Beam Pitch Initial Setting – 400 dpi
· SP2-109-4: Laser Beam Pitch Initial Setting – 600 dpi
· SP2-902-2, no.12: IPU Test Pattern – Cross Stitch – 400 dpi
· SP2-902-2, no.13: IPU Test Pattern – Cross Stitch – 600 dpi

1. Perform SP2-109-8 (Beam Pitch Data Reset).

2. Input the value for 400 dpi that is printed on the LD unit into SP2-109-1.
Use the value printed after “P” on the new LD unit as shown below.
NOTE: Do not use values printed after a “V”.

(These value numbers are on a sticker inside the machine with a UPC code on it. The numbers are just under the UPC barcode. And example number looks like this: "15980300151P: 120, 172", so the example 400 dpi value here is "120".)

3. Press the “Enter” key.

4. Perform SP2-109-3.

5. Print the 400-dpi test pattern onto A3 (11”x17”) paper using SP2-902-2 no.12
(cross stitch). (See Service Tables - Test Pattern Printing - Section 4.2.3, pasted below.)

6. Write the value of SP2-109-1 on the test pattern which was input at step 2.

7. Change the value of SP2-109-1 and print another test pattern, repeating steps
2 to 5. Print about 5 patterns with different values for SP2-109-1 (e.g. “48”, “96”,
“192”, “240”).

8. Check this test pattern. If the laser beam pitch is not correct, the image looks
like a black vertical stripe pattern.
NOTE: If the laser beam pitch is correct, the vertical stripe is not so noticeable.
If the value is not correct, the vertical stripe pattern is darker.

9. Adjust the laser beam pitch position until the thin lines are of uniform thickness
(no striping effect should appear on the printout), doing steps 2, 3, and 4. (In
step 2, input a value which is estimated to be correct, then do steps 3 and 4,
then if necessary go back to step 2 and try another value.)

10. After adjusting the laser beam pitch for 400 dpi, adjust the laser beam pitch for
600 dpi, using the same procedure as for 400 dpi (use the SP modes for 600
dpi).

.

4.2.3 TEST PATTERN PRINTING (SP2-902)
NOTE: Do not operate the machine until the test pattern is printed out completely.
Otherwise, an SC may occur.

1. Access the SP mode which contains the test pattern you need.

2. Press exit, then touch the “Copy Mode” key on the operation panel to access
the copy mode display.

3. Select the paper size.

4. Press the “Start” key to print the test pattern.

5. After checking the test pattern, exit copy mode by touching the “SP Mode” key.
Reset the test pattern to 0.

6. Exit the SP mode.

.
Test Pattern Table (SP2-902-2: Test Pattern Printing – IPU)
No. Test Pattern
-
0 None
1 Grayscale 1
2 Grayscale 2
3 Grayscale 3
4 Grayscale 4
5 Grayscale 5
6 Vertical Lines (256-greyscale) 13 Cross Stitch (600 dpi)
7 Vertical Lines (1-dot)
8 Vertical Lines (2-dot)
9 Hatch Pattern
10 Cross Pattern
11 Slant Pattern
12 Cross Stitch (400 dpi)
.

Test Pattern Table (SP2-902-3: Test Pattern Printing – Printing)
No. Test Pattern
-
0 None
1 Vertical Line (1-dot)
2 Horizontal Line (1-dot)
3 Vertical Line (2 dot)
4 Horizontal Line (2-dot)
5 Grid Pattern (Single-dot)
6 Grid Pattern (Double-dot)
7 Alternating Dot Pattern
8 Full Dot Pattern
9 Black Band
10 Trimming Area
11 Argyle Pattern
12 16 Grayscales (Horizontal)
13 16 Grayscales (Vertical)
14 16 Grayscales (Vert./Hor.)
15 16 Grayscales (Vert./Hor Overlay)
16 Not used
17 Horizontal Line (1-dot)
18 Grid Pattern (Single-dot)
19 Grid Pattern (Double-dot)
20 Alternating Dot Pattern
21 Blank Page

.

These adjusments listed in the manual require removal of a service panel and mechanical adjustment of the laser mounts, so it should be done by a qualified technician.

However, these test procedures can indicate whether or not this is the problem with your printer.

Dec 12, 2008 | Xerox WorkCentre 490CX All-In-One InkJet...

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