Code Description
E00 Low fuser temperature
E00 Low fuser temperature
E01 No 24VDC
E01 No 24VDC
E02 No 10VDC
E03 Charge corona
E03 Charge corona
E04 Trans./Sep. corona
E04 Trans/separator corona
E05 Scan/Scan home
E05 Scan/scan home
E06 Optics lens sensor
E06 Optics lens sensor
E07 Copy ratio solenoid
E07 Copy ratio solenoid
E08 AE out of specs
E08 AE out of specs
E09 Logic problem
E09 Logic problem
E10 Scan speed
E10 Scan speed
E11 BBU board
E11 Main board
E13 Sorter
E13 Sorter
E16 Drive
E16 Drive
E17 Lens focus rank
E17 Lens focus rank
E25 24v problem in duplex unit
E27 Duplex width sensor
E28 Duplex length sensor
E29 Duplex paper sensor
U0 Key counter
U0 Key counter
U4 Sorter
U4 Sorter
U5 Duplex
U6 Exit cover open
U7 Duplex cover
U9 Duplex or overlay selected with wrong paper size
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Service support for all copiers or printers model ...
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1. Hardware schematic diagram !
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3. Dump memory collections !
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Copyng Process
How Photocopiers Work
( Minolta Digital )
1. PC Drum
· The drum is an aluminum cylinder coated with photosensitive material on which an electrostatic
latent image is produced.
2. Drum Charging
· A scorotron charger employing a comb electrode generates a negative DC charged
layer on the surface of the PC Drum.
3. Photoelectric Conversion Section
· The Exposure Lamp directs light onto the original. The light reflected off the original is
directed and resized by the mirrors and lens so as to produce a reduced-size image on
the CCD Sensor.
4. HGB Board
· Converts an electric signal into a corresponding 8-bit digital image signal (A/D conversion),
makes various corrections, and outputs the results to the MFB Board.
5. MFB Board
· Compresses the image data received from the HGB Board, stores it, and uncompresses
it.
6. Laser Exposure
· The laser beam emitted from the LD (laser diode) strikes the surface of the PC Drum,
creating an electrostatic latent image.
7. Development
· Negatively charged toner adheres to the latent image on the PC Drum surface, creating
a visible image.
8. Paper Feed
· Feeds sheets of paper from the appropriate paper source.
9. Image Transfer
· An Image Transfer Roller is used. A positive charge applied to the roller causes the visible
image on the surface of the PC Drum to transfer onto the front side of the paper.
10. Paper Separation
· The PC Drum Separator Fingers remove paper from the surface of the PC Drum.
11. Cleaning
· The Cleaning Blade scrapes residual toner off the surface of the PC Drum and the toner
is recycled back to the Developing Unit.
12. Erase
· The PC Drum is exposed to light, which effectively removes any residual charge from
the drum surface.
13. Fusing
· Heat and pressure applied by the Right and Left Fusing Rollers fuse toner on the paper.
14. Paper Exit
· Feeds paper out of the copier.
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RESET SAMSUNG ML 1640:
Just short out pins 1 & 4 of the 93c66 chip.
This will reset the counter every time you power up the printer. If you remove the short, the counter
will resume counting but the service date information will not be the same.
Tested using the original initial cartridge.
I think if you want to use a replacement cartridge, you have to disconnect CN5 and short out CN9.
This way the toner will always be treated as the initial cartridge.