Kyocera KM-2550 Service manual

KM-2550

SERVICE

MANUAL

Published in October 2004

842FT111

Revision 1

CAUTION

Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions.

CAUTION

Double-pole/neutral fusing.

Revision history

Revision Date Replaced pages Remarks

1 15 October 2004 1-1-1, 2, 3, 1-3-1, 2, 4, 5, 1-4-2, 3, 4, 12, 14, 20, -

22, 23, 27, 28, 29, 30, 32, 34, 38, 44, 53, 54, 54-1,

1-5-18, 19, 20, 21, 22, 23, 24, 25, 1-6-16, 19, 21,

35, 36, 38, 2-4-7, 8, 9, 10

This page is intentionally left blank.

Safety precautions

This booklet provides safety warnings and precautions for our service personnel to ensure the safety of their customers, their machines as well as themselves during maintenance activities. Service personnel are advised to read this booklet carefully to familiarize themselves with the warnings and precautions described here before engaging in maintenance activities.

Safety warnings and precautions

Various symbols are used to protect our service personnel and customers from physical danger and to prevent damage to their property. These symbols are described below:

DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect

compliance with warning messages using this symbol.

WARNING:Serious bodily injury or death may result from insufficient attention to or incorrect compliance

with warning messages using this symbol.

CAUTION: Bodily injury or damage to property may result from insufficient attention to or incorrect

compliance with warning messages using this symbol.

Symbols

The triangle ( ) symbol indicates a warning including danger and caution. The specific point of attention is shown inside the symbol.

General warning.

Warning of risk of electric shock.

Warning of high temperature.

indicates a prohibited action. The specific prohibition is shown inside the symbol.

General prohibited action.

Disassembly prohibited.

indicates that action is required. The specific action required is shown inside the symbol.

General action required.

Remove the power plug from the wall outlet.

Always ground the copier.

1. Installation Precautions

WARNING

• Do not use a power supply with a voltage other than that specified. Avoid multiple connections to one outlet: they may cause fire or electric shock. When using an extension cable, always check

that it is adequate for the rated current. ............................................................................................

• Connect the ground wire to a suitable grounding point. Not grounding the copier may cause fire or electric shock. Connecting the earth wire to an object not approved for the purpose may cause explosion or electric shock. Never connect the ground cable to any of the following: gas pipes, lightning rods, ground cables for telephone lines and water pipes or faucets not approved by the

proper authorities. .............................................................................................................................

CAUTION:

• Do not place the copier on an infirm or angled surface: the copier may tip over, causing injury. .....

• Do not install the copier in a humid or dusty place. This may cause fire or electric shock. ..............

• Do not install the copier near a radiator, heater, other heat source or near flammable material.

This may cause fire. ..........................................................................................................................

• Allow sufficient space around the copier to allow the ventilation grills to keep the machine as cool

as possible. Insufficient ventilation may cause heat buildup and poor copying performance. ..........

• Always handle the machine by the correct locations when moving it. ..............................................

• Always use anti-toppling and locking devices on copiers so equipped. Failure to do this may

cause the copier to move unexpectedly or topple, leading to injury..................................................

• Avoid inhaling toner or developer excessively. Protect the eyes. If toner or developer is accidentally ingested, drink a lot of water to dilute it in the stomach and obtain medical attention immediately. If it gets into the eyes, rinse immediately with copious amounts of water and obtain

medical attention. ..............................................................................................................................

• Advice customers that they must always follow the safety warnings and precautions in the copier’s

instruction handbook. ........................................................................................................................

2. Precautions for Maintenance

WARNING

• Always remove the power plug from the wall outlet before starting machine disassembly...............

• Always follow the procedures for maintenance described in the service manual and other related

brochures. .........................................................................................................................................

• Under no circumstances attempt to bypass or disable safety features including safety

mechanisms and protective circuits. .................................................................................................

• Always use parts having the correct specifications...........................................................................

• Always use the thermostat or thermal fuse specified in the service manual or other related brochure when replacing them. Using a piece of wire, for example, could lead to fire or other

serious accident. ...............................................................................................................................

•When the service manual or other serious brochure specifies a distance or gap for installation of a

part, always use the correct scale and measure carefully. ...............................................................

• Always check that the copier is correctly connected to an outlet with a ground connection. ............

• Check that the power cable covering is free of damage. Check that the power plug is dust-free. If

it is dirty, clean it to remove the risk of fire or electric shock. ............................................................

• Never attempt to disassemble the optical unit in machines using lasers. Leaking laser light may

damage eyesight. ..............................................................................................................................

• Handle the charger sections with care. They are charged to high potentials and may cause

electric shock if handled improperly. .................................................................................................

CAUTION

•Wear safe clothing. If wearing loose clothing or accessories such as ties, make sure they are

safely secured so they will not be caught in rotating sections...........................................................

• Use utmost caution when working on a powered machine. Keep away from chains and belts. .......

• Handle the fixing section with care to avoid burns as it can be extremely hot. .................................

• Check that the fixing unit thermistor, heat and press rollers are clean. Dirt on them can cause

abnormally high temperatures...........................................................................................................

• Do not remove the ozone filter, if any, from the copier except for routine replacement....................

• Do not pull on the AC power cord or connector wires on high-voltage components when removing

them; always hold the plug itself. ......................................................................................................

• Do not route the power cable where it may be stood on or trapped. If necessary, protect it with a

cable cover or other appropriate item. ..............................................................................................

• Treat the ends of the wire carefully when installing a new charger wire to avoid electric leaks........

• Remove toner completely from electronic components. ...................................................................

• Run wire harnesses carefully so that wires will not be trapped or damaged. ...................................

• After maintenance, always check that all the parts, screws, connectors and wires that were

removed, have been refitted correctly. Special attention should be paid to any forgotten

connector, trapped wire and missing screws. ..................................................................................

• Check that all the caution labels that should be present on the machine according to the

instruction handbook are clean and not peeling. Replace with new ones if necessary. ...................

• Handle greases and solvents with care by following the instructions below: ....................................

· Use only a small amount of solvent at a time, being careful not to spill. Wipe spills off completely.

· Ventilate the room well while using grease or solvents.

· Allow applied solvents to evaporate completely before refitting the covers or turning the main switch on.

· Always wash hands afterwards.

• Never dispose of toner or toner bottles in fire. Toner may cause sparks when exposed directly to

fire in a furnace, etc...........................................................................................................................

• Should smoke be seen coming from the copier, remove the power plug from the wall outlet

immediately. ......................................................................................................................................

3. Miscellaneous

WARNING

• Never attempt to heat the drum or expose it to any organic solvents such as alcohol, other than

the specified refiner; it may generate toxic gas. ................................................................................

1-1 Specifications

1-1-1 Specifications ....................................................................................................................................... 1-1-1

1-1-2 Parts names ......................................................................................................................................... 1-1-3

(1) MFP ................................................................................................................................................ 1-1-3

(2) Operation panel .............................................................................................................................. 1-1-4

1-1-3 Machine cross section .......................................................................................................................... 1-1-5

1-1-4 Drive system ........................................................................................................................................ 1-1-6

1-2 Handling Precautions

1-2-1 Drum .................................................................................................................................................... 1-2-1

1-2-2 Toner .................................................................................................................................................... 1-2-1

1-2-3 Installation environment ....................................................................................................................... 1-2-2

1-3 Installation

1-3-1 Unpacking and installation ................................................................................................................... 1-3-1

(1) Installation procedure ..................................................................................................................... 1-3-1

1-3-2 Setting initial copy modes .................................................................................................................... 1-3-6

1-3-3 Installing the paper feeder (option) ...................................................................................................... 1-3-7

1-3-4 Installing the DP (option) ...................................................................................................................... 1-3-9

1-3-5 Installing the duplex unit (option) ....................................................................................................... 1-3-13

1-3-6 Installing the drawer heater (option) ................................................................................................... 1-3-16

1-3-7 Installing the key counter (option) ...................................................................................................... 1-3-19

1-3-8 Installing the finisher (option) ............................................................................................................. 1-3-22

1-3-9 Installing the job separator (option) .................................................................................................... 1-3-30

1-3-10 Installing the fax system (option) ........................................................................................................ 1-3-35

1-3-11 Installing the scan system (option) ..................................................................................................... 1-3-43

1-3-12 Installing the hard disk (option) .......................................................................................................... 1-3-45

2FT-1

1-4 Maintenance Mode

1-4-1 Maintenance mode ............................................................................................................................... 1-4-1

(1) Executing a maintenance item ....................................................................................................... 1-4-1

(2) Maintenance modes item list .......................................................................................................... 1-4-2

(3) Contents of maintenance mode items ............................................................................................ 1-4-5

1-4-2 Management mode ............................................................................................................................ 1-4-55

(1) Using the management mode ...................................................................................................... 1-4-55

(2) Setting the job accounting ............................................................................................................ 1-4-56

(3) Copy default ................................................................................................................................. 1-4-57

(4) Machine default ............................................................................................................................ 1-4-59

(5) Bypass setting .............................................................................................................................. 1-4-61

(6) Checking the total counter and printing out the counter report ..................................................... 1-4-61

(7) Status report print out ................................................................................................................... 1-4-61

(8) Language selection function ......................................................................................................... 1-4-61

1-5 Troubleshooting

1-5-1 Paper misfeed detection ...................................................................................................................... 1-5-1

(1) Paper misfeed indication ................................................................................................................ 1-5-1

(2) Paper misfeed detection conditions ................................................................................................ 1-5-2

(3) Paper misfeeds ............................................................................................................................... 1-5-7

1-5-2 Self-diagnosis ..................................................................................................................................... 1-5-17

(1) Self-diagnostic function ................................................................................................................ 1-5-17

(2) Self-diagnostic codes ................................................................................................................... 1-5-18

1-5-3 Image formation problems ................................................................................................................. 1-5-26

(1) No image appears (entirely white). ............................................................................................... 1-5-27

(2) No image appears (entirely black). ............................................................................................... 1-5-27

(3) Image is too light. ......................................................................................................................... 1-5-28

1-1-1

2FT

(4) Background is visible. ................................................................................................................... 1-5-28

(5) A white line appears longitudinally. .............................................................................................. 1-5-28

(6) A black line appears longitudinally. .............................................................................................. 1-5-29

(7) A black line appears laterally. ....................................................................................................... 1-5-29

(8) One side of the copy image is darker than the other. ................................................................... 1-5-29

(9) Black dots appear on the image. .................................................................................................. 1-5-30

(10) Image is blurred. ........................................................................................................................... 1-5-30

(11) The leading edge of the image is consistently misaligned with the original. ................................ 1-5-30

(12) The leading edge of the image is sporadically misaligned with the original. ................................ 1-5-31

(13) Paper creases. ............................................................................................................................. 1-5-31

(14) Offset occurs. ............................................................................................................................... 1-5-31

(15) Image is partly missing. ................................................................................................................ 1-5-32

(16) Fixing is poor. ............................................................................................................................... 1-5-32

(17) Image is out of focus. ................................................................................................................... 1-5-32

(18) Image center does not align with the original center. ................................................................... 1-5-33

1-5-4 Electrical problems ............................................................................................................................. 1-5-34

(1) The machine does not operate when the power switch is turned on. ........................................... 1-5-34

(2) The drive motor does not operate (C2000). ................................................................................. 1-5-34

(3) The registration motor does not operate. ..................................................................................... 1-5-34

(4) The exit motor does not operate. .................................................................................................. 1-5-34

(5) The scanner motor does not operate. .......................................................................................... 1-5-35

(6) Cooling fan motor 1 does not operate. ......................................................................................... 1-5-35

(7) Cooling fan motor 2 does not operate. ......................................................................................... 1-5-35

(8) Cooling fan motor 3 does not operate. ......................................................................................... 1-5-35

(9) Cooling fan motor 4 does not operate. ......................................................................................... 1-5-35

(10) Toner motor does not operate. ..................................................................................................... 1-5-35

(11) The drawer drive motor does not operate. ................................................................................... 1-5-35

(12) The paper feed clutch does not operate. ...................................................................................... 1-5-35

(13) The bypass paper feed clutch does not operate. ......................................................................... 1-5-36

(14) The drawer paper feed clutch does not operate. .......................................................................... 1-5-36

(15) The cleaning lamp does not turn on. ............................................................................................ 1-5-36

(16) The exposure lamp does not turn on. ........................................................................................... 1-5-36

(17) The exposure lamp does not turn off. ........................................................................................... 1-5-36

(18) The fixing heater does not turn on (C6000). ................................................................................. 1-5-36

(19) The fixing heater does not turn off. ............................................................................................... 1-5-36

(20) Main charging is not performed. ................................................................................................... 1-5-37

(21) Transfer charging is not performed. ............................................................................................. 1-5-37

(22) No developing bias is output. ....................................................................................................... 1-5-37

(23) The original size is not detected. .................................................................................................. 1-5-37

(24) The original size is not detected correctly. ................................................................................... 1-5-37

(25) The message requesting paper to be loaded is shown when paper is present in the drawer 1. .. 1-5-37 (26) The message requesting paper to be loaded is shown when paper is present in the drawer 2. .. 1-5-37

(27) The size of paper in the drawer 1 is not displayed correctly. ........................................................ 1-5-38

(28) The size of paper in the drawer 2 is not displayed correctly. ........................................................ 1-5-38

(29) A paper jam in the paper feed, paper conveying or fixing section is indicated when

the power switch is turned on. ...................................................................................................... 1-5-38

(30) The message requesting covers to be closed is displayed when the front cover and

left cover are closed. .................................................................................................................... 1-5-38

(31) Others. .......................................................................................................................................... 1-5-38

1-5-5 Mechanical problems ......................................................................................................................... 1-5-39

(1) No primary paper feed. ................................................................................................................. 1-5-39

(2) No secondary paper feed. ............................................................................................................ 1-5-39

(3) Skewed paper feed. ...................................................................................................................... 1-5-39

(4) The scanner does not travel. ........................................................................................................ 1-5-39

(5) Multiple sheets of paper are fed at one time.................................................................................. 1-5-39

(6) Paper jams. .................................................................................................................................. 1-5-39

(7) Toner drops on the paper conveying path. ................................................................................... 1-5-40

(8) Abnormal noise is heard. .............................................................................................................. 1-5-40

1-1-2

1-6 Assembly and Disassembly

1-6-1 Precautions for assembly and disassembly ......................................................................................... 1-6-1

(1) Precautions ..................................................................................................................................... 1-6-1

(2) Running a maintenance item .......................................................................................................... 1-6-2

1-6-2 Paper feed section ............................................................................................................................... 1-6-3

(1) Detaching and refitting the separation pulley ................................................................................. 1-6-3

(2) Detaching and refitting the forwarding pulley and paper feed pulley .............................................. 1-6-5

(3) Detaching and refitting the feed roller ............................................................................................. 1-6-7

(4) Detaching and refitting the drawer separation pulley ..................................................................... 1-6-8

(5) Detaching and refitting the drawer forwarding pulley and drawer paper feed pulley ...................... 1-6-9

(6) Detaching and refitting the paper conveying unit ......................................................................... 1-6-11

(7) Detaching and refitting the bypass paper feed pulley and bypass separation pad ...................... 1-6-13

(8) Detaching and refitting the registration left roller .......................................................................... 1-6-15

(9) Detaching and refitting the registration cleaner ............................................................................ 1-6-15

(10) Adjustment after roller and clutch replacement ............................................................................ 1-6-16

(10-1) Adjusting the leading edge registration of image printing .................................................... 1-6-16

(10-2) Adjusting the leading edge registration for memory image printing ..................................... 1-6-17

(10-3) Adjusting the center line of image printing ........................................................................... 1-6-18

(10-4) Adjusting the trailing edge margin of image printing ............................................................ 1-6-19

(10-5) Adjusting the margins for printing ........................................................................................ 1-6-20

(10-6) Adjusting the amount of slack in the paper .......................................................................... 1-6-21

1-6-3 Optical section .................................................................................................................................... 1-6-22

(1) Detaching and refitting the exposure lamp ................................................................................... 1-6-22

(2) Detaching and refitting the scanner wires .................................................................................... 1-6-23

(2-1) Detaching the scanner wires ............................................................................................... 1-6-23

(2-2) Fitting the scanner wires ...................................................................................................... 1-6-25

(3) Detaching and refitting the ISU (reference) .................................................................................. 1-6-28

(4) Detaching and refitting the laser scanner unit .............................................................................. 1-6-29

(5) Adjusting the longitudinal squareness (reference) ....................................................................... 1-6-32

(6) Adjusting magnification of the scanner in the main scanning direction ........................................ 1-6-33

(7) Adjusting magnification of the scanner in the auxiliary scanning direction ................................... 1-6-34

(8) Adjusting the scanner leading edge registration ........................................................................... 1-6-35

(9) Adjusting the scanner center line ................................................................................................. 1-6-36

(10) Adjusting the margins for scanning an original on the contact glass ............................................ 1-6-37

1-6-4 Drum section ....................................................................................................................................... 1-6-38

(1) Detaching and refitting the drum unit ............................................................................................ 1-6-38

(2) Detaching and refitting the drum separation claws ....................................................................... 1-6-39

(3) Detaching and refitting the main charger unit ............................................................................... 1-6-40

1-6-5 Developing section .............................................................................................................................. 1-6-41

(1) Detaching and refitting the developing unit .................................................................................. 1-6-41

1-6-6 Transfer section .................................................................................................................................. 1-6-42

(1) Detaching and refitting the transfer roller ..................................................................................... 1-6-42

1-6-7 Fixing section ...................................................................................................................................... 1-6-43

(1) Detaching and refitting the fixing unit ........................................................................................... 1-6-43

(2) Detaching and refitting the press roller ......................................................................................... 1-6-45

(3) Detaching and refitting the fixing heater M and S ......................................................................... 1-6-46

(4) Detaching and refitting the heat roller separation claws ............................................................... 1-6-47

(5) Detaching and refitting the heat roller ........................................................................................... 1-6-48

(6) Detaching and refitting the fixing thermostat ................................................................................ 1-6-49

(7) Detaching and refitting the fixing thermistor ................................................................................. 1-6-49

(8) Adjusting the fixing unit height (adjusting lateral squareness) ...................................................... 1-6-50

2FT

1-7 Requirements on PCB Replacement

1-1-3

1-7-1 Upgrading the firmware on the main PCB ............................................................................................ 1-7-1

1-7-2 Upgrading the printer board firmware .................................................................................................. 1-7-2

1-7-3 Adjustment-free variable resisters (VR) ............................................................................................... 1-7-3

1-7-4 Remarks on engine PCB or main PCB replacement ........................................................................... 1-7-3

2FT

2-1 Mechanical construction

2-1-1 Paper feed section ............................................................................................................................... 2-1-1

2-1-2 Optical section ...................................................................................................................................... 2-1-4

(1) Original scanning ............................................................................................................................ 2-1-5

(2) Image printing ................................................................................................................................. 2-1-6

2-1-3 Drum section ........................................................................................................................................ 2-1-8

2-1-4 Developing section ............................................................................................................................. 2-1-10

(1) Formation of magnetic brush ........................................................................................................ 2-1-11

(2) Single component developing system .......................................................................................... 2-1-12

2-1-5 Transfer and separation sections ....................................................................................................... 2-1-13

2-1-6 Fixing section ..................................................................................................................................... 2-1-15

(1) Fixing temperature system ........................................................................................................... 2-1-16

(2) Fixing temperature control based on ambient temperature .......................................................... 2-1-16

2-1-7 Exit and switchback sections ............................................................................................................. 2-1-17

2-1-8 Duplex section .................................................................................................................................... 2-1-18

(1) Paper conveying operation in duplex copying .............................................................................. 2-1-19

2-2 Electrical Parts Layout

2-2-1 Electrical parts layout ........................................................................................................................... 2-2-1

(1) PCBs .............................................................................................................................................. 2-2-1

(2) Switches and sensors ..................................................................................................................... 2-2-2

(3) Motors ............................................................................................................................................. 2-2-4

(4) Other electrical components ........................................................................................................... 2-2-5

2-3 Operation of the PCBs

2-3-1 Power source PCB ............................................................................................................................... 2-3-1

2-3-2 Main PCB ............................................................................................................................................. 2-3-4

2-3-3 Engine PCB .......................................................................................................................................... 2-3-8

2-3-4 Printer board PCB .............................................................................................................................. 2-3-15

2-3-5 Operation unit PCB ............................................................................................................................ 2-3-19

2-3-6 CCD PCB ........................................................................................................................................... 2-3-22

2-4 Appendixes

Timing chart No. 1 .......................................................................................................................................... 2-4-1

Timing chart No. 2 .......................................................................................................................................... 2-4-2

Timing chart No. 3 .......................................................................................................................................... 2-4-3

Timing chart No. 4 .......................................................................................................................................... 2-4-4

Chart of image adjustment procedures .......................................................................................................... 2-4-5

Maintenance parts list .................................................................................................................................... 2-4-8

Periodic maintenance procedures .................................................................................................................. 2-4-9

General wiring diagram ................................................................................................................................ 2-4-11

1-1-4

1-1-1 Specifications

Type ............................................... Desktop

Copying system.............................. Indirect electrostatic system

Originals ......................................... Sheets, books and 3-dimensional objects (Maximum original size: A3/11" × 17")

Original feed system ...................... Fixed

Copy paper..................................... Paper weights

Drawer: 60 – 105 g/m Bypass table: 45 – 160 g/m Paper type Drawer: Plain paper, recycled paper and colored paper Bypass table: Plain paper, recycled paper, thin paper, thick paper and colored paper

Copying sizes ................................. Maximum: A3/11" × 17"

Minimum: A6R /5

Magnification ratios ........................ Manual mode: 25 – 200%, 1% increments

Copy speed .................................... At 100% magnification in copy mode:

A4: 25 copies/min.

A4R: 15 copies/min.

A3: 13 copies/min.

A5R: 12 copies/min.

A6R: 11 copies/min.

B5: 25 copies/min.

B5R: 15 copies/min.

B4 (257 × 364 mm): 13 copies/min.

11" × 8

/2": 25 copies/min.

/2" × 11": 15 copies/min. 11" × 17": 13 copies/min. 81/2" × 14": 13 copies/min.

First copy time ................................ 4.9 +_ 0.5 s or less (A4/11" × 8

Warm-up time................................. Less then 20 s (room temperature 23°C/73.4°F, 50% RH)

Time for recovery from low power mode: 10 s Time for recovery from sleep mode: 20 s

Paper feed system ......................... Automatic feed

Capacity: Drawers: 300 sheets (80 g/m

100 sheets (90 – 105 g/m Manual feed Capacity: Bypass: 50 sheets (A4/11" × 8

25 sheets (A3, B4, 11" × 17", 8

Paper ejection system .................... In-machine ejection (face down)

Capacity: 250 sheets (80 g/m

Continuous copying........................ 1 – 999 sheets

Photoconductor ..............................a-Si drum (drum diameter 30 mm)

Charging system ............................ Single positive corona charging

Recording system .......................... Semiconductor laser

Developing system ......................... Single component developing system

Toner: magnetism toner Toner replenishing: automatic from a toner container

Transfer system ............................. Transfer roller

Separation system ......................... Curvature separation and separation electrode

Fixing system ................................. Heat roller

Heat source: halogen heaters (120 V specifications: main 550 W, sub 400W/ 220-240 V specifications: main 600 W, sub 430 W) Control temperature: 180°C/356°F (190°C/374°F on and after 6th sheet) Abnormally high temperature protection device: 180°C/356°F thermostat Fixing pressure: 44.1 N

Charge erasing system .................. Exposure by cleaning lamp

Cleaning system............................. Cleaning blade

Scanning system ............................ Flat bed scanning by CCD image sensor

Bitmap memory .............................. 35 MB (standard)

Image storage memory .................. 29 MB (standard)

Additional memory ......................... 16 MB, 32 MB, 64 MB and 128 MB

/2" × 81/2"

/2")

)

/2" or less)

)

/2" × 14")

2FT-1

1-1-1

2FT-1

Resolution ...................................... 600 × 600 dpi

Light source.................................... Inert gas lamp

Dimensions .................................... 574 (W) × 593 (D) × 650 (H) mm

/8" (W) × 233/8" (D) × 259/16" (H)

Weight ............................................Approx. 47 kg/103.4 lbs

Floor requirements .........................827 (W) × 593 (D) mm (at the time of using bypass table)

/8" (W) × 233/8" (D) (at the time of using bypass table)

Functions........................................ Automatic paper selection, Image quality selection, Automatic sizing selection

function, zoom function, Duplex copy, Divided copy, Binding margin, Border width,

Aggregate copy, Sort copy, Eco-copy, Copy program and Section management mode

Power source ................................. 120 V AC, 60 Hz, 9.0 A

220 – 240 V AC, 50 Hz, 5.0 A

Options ........................................... Document processer, paper feeder, duplex unit, finisher, job separator, key counter,

fax system, network scanner, hard disk, additional memory and original cover

• Printer functions

Printing speed ................................ Same as copying speed

First print time ................................ Approx. 4.9 s (A4/11" × 8

/2")

Resolution ...................................... 300 dpi, 600 dpi, Fast 1200 mode

Memory .......................................... 64 MB (standard)

Additional memory: 32 MB, 64 MB, 128 MB and 256 MB Hard disk: 340 MB, 512 MB and 1 GB

Applicable OS ................................ Microsoft Windows 95/98/Me/NT4.x/2000/XP

Apple Macintosh OS 9.x/OS X 10.x UNIX/Linux

Interface ......................................... Parallel interface (based on IEEE1284)

Network interface USB 2.0 (USB Hi-Speed) Network interface card (option)

• Duplex unit

Type ............................................... Internal type

Copy paper..................................... Paper weights: 64 – 80 g/m

Paper type: Plain paper, recycled paper and colored paper

Paper sizes .................................... A3 – A5R/11" × 17" – 5

/2" × 81/2"

Power source ................................. Electrically connected to the MFP

Dimensions .................................... 368 (W) × 53 (D) × 180 (H) mm

/2" (W) × 21/16" (D) × 71/16" (H)

Weight ............................................Approx. 0.65 kg/1.43 lbs

1-1-2

1-1-2 Parts names

(1) MFP

2FT-1

1 Original cover (optional) 2 Copy storage section 3 Operation panel 4 Drawer 1 5 Drawer 2 6 Width guide 7 Length guide 8 Left cover handle 9 Bypass tray

Figure 1-1-1

0 Support guide ! Slider @ Contact glass # Original size indicator plates $ Left cover % Waste toner box ^ Toner container release lever & Toner container * Cleaner rod

( Front cover ) Power switch ⁄ Power switch cover ¤ Handles for transport ‹ Network interface connector › USB interface connector ﬁ Parallel interface connector ﬂ Memory card slot

1-1-3

2FT

(2) Operation panel

1 System Menu/Counter key and indicator 2 Copier key and indicator 3 Printer key and indicator 4 Scanner key and indicator 5 Fax key and indicator 6 Combine key and indicator 7 Border Erase key and indicator 8 Duplex/Split Page key and indicator 9 Offset key and indicator 0 Function key ! Scanner Function key @ Auto Selection key and indicator # Margin key and indicator $ Sort key and indicator % Staple key and indicator ^ Program key & Zoom key / Left cursor key * Auto%/100% key / Down cursor key ( Original Size key / Up cursor key

Figure 1-1-2

) Paper Select key / Right cursor key ⁄ Enter key ¤ Image quality mode select key ‹ Auto Exposure key › Lighter key / Darker key / exposure display ﬁ Message display ﬂ Ready indicator ‡ Data indicator — Attention indicator

· Job Accounting key ‚ Interrupt key and indicator Œ Energy Saver key and indicator „ Power key and indicator ´ Numeric keys ‰ Reset key ˇ Stop/Clear key Á Start key and indicator ¨ Main power indicator

1-1-4

1-1-3 Machine cross section

2FT

Figure 1-1-3 Machine cross section

1 Paper feed section 2 Optical section 3 Drum section 4 Developing section 5 Transfer and separation section 6 Fixing section 7 Exit and switchback section 8 Duplex section

Light path

er path

1-1-5

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1-1-4 Drive system

1-1-6

1 Drive motor gear 2 Gear 136 3 Registration gear 51 4 Registration motor gear 5 Gear 32 6 Gear 25 7 Gear 25 8 Gear 20 9 Paper feed clutch gear 0 Gear 30 ! Gear 31 @ Gear 25 # Gear 49 $ Gear 30/23 % Developing gear 25

Figure 1-1-4

^ Developing gear 26 & Gear 40 * Fixing joint gear 29 ( Gear 31 ) Gear 50 ⁄ Gear 98/34 ¤ Gear 50 ‹ Gear 25 › Gear 40 ﬁ Gear 30 ﬂ Gear 50 ‡ Gear 60 — Gear 32/23

· Exit motor gear ‚ Gear 43/20

1-2-1 Drum

Note the following when handling or storing the drum.

• When removing the drum unit, never expose the drum surface to strong direct light.

• Keep the drum at an ambient temperature between –20°C/–4°F and 55°C/131°F and at a relative humidity not higher than 90% RH. Avoid abrupt changes in temperature and humidity.

• Avoid exposure to any substance which is harmful to or may affect the quality of the drum.

• Do not touch the drum surface with any object. Should it be touched by hands or stained with oil, clean it.

1-2-2 Toner

Store the toner in a cool, dark place. Avoid direct light and high humidity.

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1-2-1

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1-2-3 Installation environment

1. Temperature: 10 - 32.5°C/50 - 90.5°F

2. Humidity: 15 - 80%RH

3. Power supply: 120 V AC, 9.0 A 220 - 240 V AC, 5.0 A

4. Power source frequency: 50 Hz ±0.3%/60 Hz ±0.3%

5. Installation location

• Avoid direct sunlight or bright lighting. Ensure that the photoconductor will not be exposed to direct sunlight or other strong light when removing paper jams.

• Avoid extremes of temperature and humidity, abrupt ambient temperature changes, and hot or cold air directed onto the machine.

• Avoid dust and vibration.

• Choose a surface capable of supporting the weight of the machine.

• Place the machine on a level surface (maximum allowance inclination: 1° ).

• Avoid air-borne substances that may adversely affect the machine or degrade the photoconductor, such as mercury, acidic of alkaline vapors, inorganic gasses, NOx, SOx gases and chlorine-based organic solvents.

• Select a room with good ventilation.

6. Allow sufficient access for proper operation and maintenance of the machine. Machine front: 1000 mm/39 Machine right: 300 mm/11

/8" Machine rear: 100 mm/315/16"

/16" Machine left: 300 mm/1113/16"

a: 571 mm/221/2" b: 603 mm/233/4" c: 607 mm/237/8" d: 1371.5 mm/54" e: 1323 mm/52

f: 952.5 mm/371/2"

/16"

1-2-2

Figure 1-2-1 Installation dimensions

1-3-1 Unpacking and installation

(1) Installation procedure

Start

Unpack.

Install the optional paper feeder.

Remove the tapes and pins.

2FT-1

Connect the power cord.

Installing the toner

(maintenance item U130).

Install the optional original cover or DP.

Install the optional duplex unit.

Install the optional finisher or job separator.

Install the toner container.

Connect the connector of the drawer heater.

Load paper.

Output an own-status report

(maintenance item U000).

Exit maintenance mode.

Make test copies.

End of installation.

1-3-1

2FT-1

Unpack.

1 MFP 2 Power cord 3 Toner container 4 Outer case 5 Lower left pad 6 Lower right pad 7 Upper left pad 8 Upper right pad 9 Inner frame

* Place the machine on a level surface.

1-3-2

Figure 1-3-1 Unpacking

0 Left spacer ! Rear spacer @ Rear pad # Skid $ Belt % Eject sheet ^ Machine cover & Bar code labels * Top sheet

( Front pad ) Operation guide

Cassette size sheet Paper protection bag Error code label Inspection report

Install the optional paper feeder.

Tapes

Tape

Tapes

Tape

1. Install the optional paper feeder as necessary (see page 1-3-7 to 1-3-8).

Remove the tapes and pins.

1. Remove the fifteen tapes.

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2. Remove the two pins for light source unit.

Figure 1-3-2

Pins

Figure 1-3-3

1-3-3

2FT-1

Install the optional original cover or DP.

1. Install the optional original cover or DP (see pages 1-3-9 to 1-3-12 when installing the DP).

Install the optional duplex unit.

1. Install the optional duplex unit as necessary (see pages 1-3-13 to 1-3-15).

Install the optional finisher or job separator.

1. Install the optional finisher or job separator as necessary (see pages 1-3-22 to 1-3-34).

Install the toner container.

1. Open the front cover.

2. Tap the top of the toner container five to six times.

3. Shake the toner container approximately 10 times in the horizontal direction to stir toner.

4. Turn the toner container release lever and gently push the toner container into the MFP. * Push the container all the way into the MFP until

it locks in place.

5. Restore the toner container release lever.

6. Close the front cover.

Connect the connector of the drawer heater.

* Connect according to need.

1. Remove the right cover.

2. Connect the connector of the drawer heater to YC7 of the power source PCB.

3. Refit the right cover.

Toner container release lever

Toner container

Figure 1-3-4-1

Connector of the drawer heater

1-3-4

YC7

Figure 1-3-4-2

Connect the power cord.

1. Connect the power cord to the connector on the MFP.

2. Insert the power plug into the wall outlet and turn the power switch on.

Installing the toner (maintenance item U130).

1. Enter the maintenance mode by entering “10871087” using the numeric keys.

2. Enter “130” using the numeric keys and press the start key.

3. Select the “EXECUTE” using the up/down cursor keys.

4. Press the start key to execute the maintenance item. Installation of toner starts and time (minutes) is indicated until the installation ends.

5. When the installation is complete, “FINISHED” will be displayed if the installation is successful or “NG” will be displayed if it has failed. If “NG” is displayed, check to see if the toner container contains toner and to see if the toner container sensor malfunctions and then try again.

6. Press the stop/clear key.

Load paper.

1. Load paper in the drawer.

Output an own-status report (maintenance item U000).

1. Enter “000” using the numeric keys and press the start key.

2. Select “MAINTENANCE” and press the start key to output a list of the current settings of the maintenance items.

3. Press the stop/clear key.

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Exit maintenance mode.

1. Enter “001” using the numeric keys and press the start key. The machine exits the maintenance mode.

Make test copies.

1. Place an original and make test copies. Set A3/11" x 17" paper on drawer 2 and run the maintenance item U113 (Performing drum refresh operation) if a faulty image (black lines, etc.) occurs.

End of installation.

1-3-5

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1-3-2 Setting initial copy modes

Factory settings are as follows:

Maintenance

item No.

U253 U254 U258

U260 U264

U277 U326 U342 U343 U344

Contents

Switching between double and single counts Turning auto start function on/off Switching copy operation at toner empty detection Changing the copy count timing Setting the display order of the date

Setting auto aplication change time Setting the black line cleaning indication Setting the ejection restriction Switching between duplex/simplex copy mode Setting preheat/energy saver mode

Factory setting

Double count ON SINGLE MODE

After ejection Month/Day/Year (Inch specifications) Day/Month/Year (Inch specifications) 30 ON ON OFF ENERGY STAR

1-3-6

1-3-3 Installing the paper feeder (option)

1. Place the MFP on the paper feeder by aligning the positioning insertion sections of the MFP with the positioning pins at the rear part of the paper feeder. * When placing the MFP, take care not to hit the

MFP against the drawer, the pins or ground plate of the paper feeder.

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Positioning pins

Paper feeder

Figure 1-3-5

For stacking paper feeders for use: Stack a paper feeder on another paper feeder by aligning the positioning insertion sections of the first paper feeder with the positioning pins at the rear part of the second paper feeder.

(Two paper feeders can be added.)

2. If a type of paper that is not included in the specifications for the standard sheet cassette size is used, replace the cassette size sheet indication with the supplied one.

3. Insert the MFP power plug into the wall outlet and turn the power switch on. Load paper in the drawer and make test copies to check the operation.

Positioning pins

Figure 1-3-6

Figure 1-3-7

Cassette size

sheet indication

1-3-7

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Adjusting the leading edge timing

1. Run maintenance mode 034. Select ADJ, RCL ON TIMING and press the start key. First optional cassette: Select RCL T1. Second optional cassette: Select RCL T2. Third optional cassette: Select RCL T3. For models equipped with two standard cassettes, adjust only RCL T2 and RCL T3. Press the Interrupt key to output the test pattern and check the image. If an adequate image cannot be obtained, carry out the following adjustment.

2. If a test pattern a is obtained, increase the adjustment value. If a test pattern b is obtained, decrease the adjustment value. Setting range: -5.0 - +10.0 Changing the value by one moves the leading edge by 0.1 mm.

3. Output the test pattern again.

4. Repeat steps 2 and 3 until an adequate image is obtained.

Adequate image Test pattern a Test pattern b

Figure 1-3-8

Adjusting the center line

1. Run maintenance mode 034. Select ADJ, LSU OUT TIMING and press the start key. First optional cassette: Select LSU T1. Second optional cassette: Select LSU T2. Third optional cassette: Select LSU T3. For models equipped with two standard cassettes, adjust only LSU T2 and LSU T3. Press the Interrupt key to output the test pattern and check the image. If an adequate image cannot be obtained, carry out the following adjustment.

2. If a test pattern a is obtained, increase the adjustment value. If a test pattern b is obtained, decrease the adjustment value. Setting range: -7.0 - +10.0 Changing the value by one moves the center line by 0.1 mm.

3. Output the test pattern again.

4. Repeat steps 2 and 3 until an adequate image is obtained.

1-3-8

Adequate image Test pattern a Test pattern b

Figure 1-3-9

1-3-4 Installing the DP (option)

1. Remove the original holder and remove the two screws from the rear top cover.

2. Pass the two pins through the screw holes of the rear top cover and attach them to the lower frame.

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Screw

Figure 1-3-10

3. Place the DP on the MFP by fitting the pins into the holes at the hinge sections of the DP and sliding them toward the front side.

4. Secure the DP with the two TP Taptite chromate screws M4 × 10 and the two screws that have been removed in step 1.

Hole Hole

TP Taptite chromate screw M4 × 10

Figure 1-3-11

TP Taptite chromate screw M4 × 10

Screw

Figure 1-3-12

1-3-9

+ 251 hidden pages

Kyocera KM-2550 Service manual

Revision history

Safety precautions

CONTENTS

1-1-1 Specifications

1-1-2 Parts names

1-1-3 Machine cross section

1-1-4 Drive system

1-2-1 Drum

1-2-2 Toner

1-2-3 Installation environment

1-3-1 Unpacking and installation

1-3-2 Setting initial copy modes

1-3-3 Installing the paper feeder (option)

1-3-4 Installing the DP (option)