SERVICEMANUAL

Published in Jun. ’03842FG110

KM-3035KM-4035KM-5035

1-1-1

2FD/2FF/2FG

CONTENTS

1-1 Specifications1-1-1 Specifications ....................................................................................................................................... 1-1-11-1-2 Parts names and their functions ........................................................................................................... 1-1-3

(1) Copier ............................................................................................................................................. 1-1-3(2) Operation panel .............................................................................................................................. 1-1-4

1-1-3 Machine cross section .......................................................................................................................... 1-1-51-1-4 Drive system ........................................................................................................................................ 1-1-6

(1) Drive system 1 (drive motor and eject motor drive trains) .............................................................. 1-1-6(2) Drive system 2 (paper feed motor drive train) ................................................................................ 1-1-7(3) Drive system 3 (duplex section) ..................................................................................................... 1-1-8

1-2 Handling Precautions1-2-1 Drum .................................................................................................................................................... 1-2-11-2-2 Toner .................................................................................................................................................... 1-2-11-2-3 Installation environment ....................................................................................................................... 1-2-1

1-3 Installation1-3-1 Unpacking and installation ................................................................................................................... 1-3-1

(1) Installation procedure ..................................................................................................................... 1-3-11-3-2 Setting initial copy modes .................................................................................................................... 1-3-91-3-3 Installing the key counter (option) ...................................................................................................... 1-3-101-3-4 Installing the drawer heater (option) ................................................................................................... 1-3-121-3-5 Installing the paper feeder (option) .................................................................................................... 1-3-141-3-6 Installing the large paper deck (option) .............................................................................................. 1-3-181-3-7 Installing the booklet stitcher/switchback unit (option) ....................................................................... 1-3-231-3-8 Installing the sheet-through document processor (option) ................................................................. 1-3-341-3-9 Installing the Printing System (option) ................................................................................................ 1-3-35

1-3-10 Installing the Scanning System (option) ............................................................................................. 1-3-371-3-11 Installing the built-in finisher (option) .................................................................................................. 1-3-401-3-12 Installing the job separator (option) .................................................................................................... 1-3-461-3-13 Installing the Facsimile System (option) ............................................................................................. 1-3-491-3-14 Installing the hard disk (option) .......................................................................................................... 1-3-571-3-15 Installing the 1000-sheet finisher (option) .......................................................................................... 1-3-591-3-16 Installing the 3000-sheet finisher (option) .......................................................................................... 1-3-64

1-4 Maintenance Mode1-4-1 Copier management ............................................................................................................................. 1-4-1

(1) Using the copier management mode .............................................................................................. 1-4-1(2) Setting department management items .......................................................................................... 1-4-2(3) Copy default ................................................................................................................................... 1-4-3(4) Machine default .............................................................................................................................. 1-4-6(5) Bypass setting ................................................................................................................................ 1-4-7(6) Original size registration ................................................................................................................. 1-4-7(7) User adjustment ............................................................................................................................. 1-4-8(8) Checking the total counter and printing out the counter report ....................................................... 1-4-8(9) Doucment management default setting .......................................................................................... 1-4-8

(10) Hard disk management .................................................................................................................. 1-4-8(11) Status report print out ..................................................................................................................... 1-4-8(12) Language selection function ........................................................................................................... 1-4-8

1-4-2 Maintenance mode ............................................................................................................................... 1-4-9(1) Executing a maintenance item ....................................................................................................... 1-4-9(2) Maintenance mode item list .......................................................................................................... 1-4-10(3) Contents of maintenance mode items .......................................................................................... 1-4-14

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1-1-2

2FD/2FF/2FG

1-5 Troubleshooting1-5-1 Paper misfeed detection ...................................................................................................................... 1-5-1

(1) Paper misfeed indication ................................................................................................................ 1-5-1(2) Paper misfeed detection conditions ................................................................................................ 1-5-2(3) Paper misfeeds ............................................................................................................................... 1-5-9

1-5-2 Self-diagnosis ..................................................................................................................................... 1-5-20(1) Self-diagnostic function ................................................................................................................ 1-5-20(2) Self-diagnostic codes ................................................................................................................... 1-5-21

1-5-3 Image formation problems ................................................................................................................. 1-5-37(1) No image appears (entirely white). ............................................................................................... 1-5-38(2) No image appears (entirely black). ............................................................................................... 1-5-39(3) Image is too light. ......................................................................................................................... 1-5-40(4) Background is visible. ................................................................................................................... 1-5-40(5) A white line appears longitudinally. .............................................................................................. 1-5-40(6) A black line appears longitudinally. .............................................................................................. 1-5-41(7) A black line appears laterally. ....................................................................................................... 1-5-41(8) One side of the copy image is darker than the other. ................................................................... 1-5-41(9) Black dots appear on the image. .................................................................................................. 1-5-42

(10) Image is blurred. ........................................................................................................................... 1-5-42(11) The leading edge of the image is consistently misaligned with the original. ................................ 1-5-42(12) The leading edge of the image is sporadically misaligned with the original. ................................ 1-5-43(13) Paper creases. ............................................................................................................................. 1-5-43(14) Offset occurs. ............................................................................................................................... 1-5-43(15) Image is partly missing. ................................................................................................................ 1-5-44(16) Fixing is poor. ............................................................................................................................... 1-5-44(17) Image is out of focus. ................................................................................................................... 1-5-44(18) Image center does not align with the original center. ................................................................... 1-5-45(19) Image is not square. ..................................................................................................................... 1-5-45

1-5-4 Electrical problems ............................................................................................................................. 1-5-46(1) The machine does not operate when the power switch is turned on. ........................................... 1-5-46(2) The drive motor does not operate (C2000). ................................................................................. 1-5-46(3) The paper feed motor does not operate (C2500). ........................................................................ 1-5-46(4) The eject motor does not operate. ................................................................................................ 1-5-46(5) The upper lift motor does not operate (C1010). ........................................................................... 1-5-47(6) The lower lift motor does not operate (C1020). ............................................................................ 1-5-47(7) The scanner motor does not operate. .......................................................................................... 1-5-47(8) Cooling fan motor 1 does not operate. ......................................................................................... 1-5-47(9) Cooling fan motor 2 does not operate. ......................................................................................... 1-5-47

(10) Cooling fan motor 3 does not operate. ......................................................................................... 1-5-47(11) Cooling fan motor 4 does not operate. ......................................................................................... 1-5-47(12) Cooling fan motor 5 does not operate. ......................................................................................... 1-5-48(13) Cooling fan motor 6 does not operate. ......................................................................................... 1-5-48(14) Cooling fan motor 7 does not operate. ......................................................................................... 1-5-48(15) The upper paper feed clutch does not operate. ............................................................................ 1-5-48(16) The lower paper feed clutch does not operate. ............................................................................ 1-5-48(17) Feed clutch 1 does not operate. ................................................................................................... 1-5-48(18) Feed clutch 2 does not operate. ................................................................................................... 1-5-48(19) Feed clutch 3 does not operate. ................................................................................................... 1-5-49(20) The bypass paper feed clutch does not operate. ......................................................................... 1-5-49(21) The bypass feed clutch does not operate. .................................................................................... 1-5-49(22) The registration clutch does not operate. ..................................................................................... 1-5-49(23) The duplex feed clutch does not operate. .................................................................................... 1-5-49(24) The feedshift solenoid does not operate. ..................................................................................... 1-5-49(25) The toner feed solenoid does not operate. ................................................................................... 1-5-50(26) The cleaning lamp does not turn on. ............................................................................................ 1-5-50(27) The exposure lamp does not turn on. ........................................................................................... 1-5-50(28) The exposure lamp does not turn off. ........................................................................................... 1-5-50(29) The fixing heater does not turn on (C6000). ................................................................................. 1-5-50

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1-1-3

2FD/2FF/2FG

(30) The fixing heater does not turn off. ............................................................................................... 1-5-50(31) Main charging is not performed. ................................................................................................... 1-5-50(32) Transfer charging is not performed. ............................................................................................. 1-5-51(33) No developing bias is output. ....................................................................................................... 1-5-51(34) The original size is not detected. .................................................................................................. 1-5-51(35) The original size is not detected correctly. ................................................................................... 1-5-51(36) The touch panel keys do not work. ............................................................................................... 1-5-51(37) The message requesting paper to be loaded is shown

when paper is present in the upper drawer. ................................................................................. 1-5-51(38) The message requesting paper to be loaded is shown

when paper is present in the lower drawer. .................................................................................. 1-5-51(39) The message requesting paper to be loaded is shown

when paper is present on the bypass tray. ................................................................................... 1-5-51(40) The size of paper in the upper drawer is not displayed correctly. ................................................ 1-5-52(41) The size of paper in the lower drawer is not displayed correctly. ................................................. 1-5-52(42) The printing width of the paper on the bypass tray is not detected correctly. ............................... 1-5-52(43) A paper jam in the paper feed, paper conveying or fixing section is indicated

when the power switch is turned on. ............................................................................................ 1-5-53(44) The message requesting covers to be closed is displayed

when the front cover and conveying cover are closed. ................................................................ 1-5-53(45) Others. .......................................................................................................................................... 1-5-53

1-5-5 Mechanical problems ......................................................................................................................... 1-5-54(1) No primary paper feed. ................................................................................................................. 1-5-54(2) No secondary paper feed. ............................................................................................................ 1-5-54(3) Skewed paper feed. ...................................................................................................................... 1-5-54(4) The scanner does not travel. ........................................................................................................ 1-5-54(5) Multiple sheets of paper are fed at one time. ................................................................................. 1-5-54(6) Paper jams. .................................................................................................................................. 1-5-54(7) Toner drops on the paper conveying path. ................................................................................... 1-5-55(8) Abnormal noise is heard. .............................................................................................................. 1-5-55

1-6 Assembly and Disassembly1-6-1 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 forwarding, paper feed and separation pulleys .................................... 1-6-3(2) Detaching and refitting the bypass separation, bypass papaer feed and

bypass forwarding pulleys .............................................................................................................. 1-6-5(3) Adjustment after roller and clutch replacement ............................................................................ 1-6-10

(3-1) Adjusting the leading edge registration of image printing .................................................... 1-6-10(3-2) Adjusting the leading edge registration for memory image printing..................................... 1-6-11(3-3) Adjusting the center line of image printing........................................................................... 1-6-12(3-4) Adjusting the margins for printing ........................................................................................ 1-6-13(3-5) Adjusting the amount of slack in the paper .......................................................................... 1-6-14

1-6-3 Optical section .................................................................................................................................... 1-6-15(1) Detaching and refitting the exposure lamp ................................................................................... 1-6-15(2) Detaching and refitting the scanner wires .................................................................................... 1-6-16

(2-1) Detaching the scanner wires ............................................................................................... 1-6-16(2-2) Refitting the scanner wires .................................................................................................. 1-6-17

(3) Detaching and refitting the laser scanner unit .............................................................................. 1-6-20(4) Adjusting the skew of the laser scanner unit (reference) .............................................................. 1-6-22(5) Detaching and refitting the ISU (reference) .................................................................................. 1-6-23(6) Adjusting the position of the ISU (reference) ................................................................................ 1-6-25(7) Adjusting the longitudinal squareness (reference) ....................................................................... 1-6-26(8) Adjusting magnification of the scanner in the main scanning direction ........................................ 1-6-27(9) Adjusting magnification of the scanner in the auxiliary scanning direction ................................... 1-6-28

(10) Adjusting the scanner leading edge registration ........................................................................... 1-6-29(11) Adjusting the scanner center line ................................................................................................. 1-6-30(12) Adjusting the margins for scanning an original on the contact glass ............................................ 1-6-31

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1-1-4

2FD/2FF/2FG

1-6-4 Drum section ...................................................................................................................................... 1-6-32(1) Detaching and refitting the drum unit ............................................................................................ 1-6-32(2) Detaching and refitting the main charger unit ............................................................................... 1-6-32(3) Detaching and refitting the drum separation claw assemblies ..................................................... 1-6-33

1-6-5 Developing section ............................................................................................................................. 1-6-34(1) Detaching and refitting the developing unit .................................................................................. 1-6-34

1-6-6 Transfer section ................................................................................................................................. 1-6-35(1) Detaching and refitting the transfer roller assembly ..................................................................... 1-6-35

1-6-7 Fixing section ..................................................................................................................................... 1-6-36(1) Detaching and refitting the fixing unit ........................................................................................... 1-6-36(2) Detaching and refitting the heat roller separation claws ............................................................... 1-6-36(3) Detaching and refitting the press roller ......................................................................................... 1-6-37(4) Detaching and refitting the fixing heater M and S ......................................................................... 1-6-38(5) Detaching and refitting the heat roller ........................................................................................... 1-6-39(6) Detaching and refitting the fixing unit thermistor 1 and 2 ............................................................. 1-6-40

1-7 Requirements on PCB Replacement1-7-1 Upgrading the firmware on the main PCB ............................................................................................ 1-7-11-7-2 Adjustment-free variable resisters (VR) ............................................................................................... 1-7-21-7-3 Remarks on main PCB replacement .................................................................................................... 1-7-21-7-4 Upgrading the the printer board firmware ............................................................................................ 1-7-3

2-1 Mechanical construction2-1-1 Paper feed section ............................................................................................................................... 2-1-12-1-2 Main charging section .......................................................................................................................... 2-1-52-1-3 Optical section ...................................................................................................................................... 2-1-7

(1) Original scanning ............................................................................................................................ 2-1-8(2) Image printing ................................................................................................................................. 2-1-9

2-1-4 Developing section ............................................................................................................................. 2-1-12(1) Formation of magnetic brush ........................................................................................................ 2-1-13(2) Computing the absolute humidity ................................................................................................. 2-1-14(3) Single component developing system .......................................................................................... 2-1-15

2-1-5 Transfer and separation sections ....................................................................................................... 2-1-172-1-6 Cleaning and charge erasing sections ............................................................................................... 2-1-192-1-7 Fixing section ..................................................................................................................................... 2-1-202-1-8 Eject and switchback sections ........................................................................................................... 2-1-222-1-9 Duplex section .................................................................................................................................... 2-1-24

(1) Paper conveying operation in duplex copying .............................................................................. 2-1-25

2-2 Electrical Parts Layout2-2-1 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 PCBs2-3-1 Power source PCB ............................................................................................................................... 2-3-12-3-2 Main PCB ............................................................................................................................................. 2-3-52-3-3 Operation unit PCB ............................................................................................................................ 2-3-172-3-4 Scanner drive PCB ............................................................................................................................. 2-3-222-3-5 CCD PCB ........................................................................................................................................... 2-3-25

2-4 AppendixesTiming chart No. 1 .......................................................................................................................................... 2-4-1Timing chart No. 2 .......................................................................................................................................... 2-4-2Timing chart No. 3 .......................................................................................................................................... 2-4-3Timing chart No. 4 .......................................................................................................................................... 2-4-4

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1-1-5

2FD/2FF/2FG

Timing chart No. 5 .......................................................................................................................................... 2-4-5Timing chart No. 6 .......................................................................................................................................... 2-4-6Timing chart No. 7 .......................................................................................................................................... 2-4-7Timing chart No. 8 .......................................................................................................................................... 2-4-8Timing chart No. 9 .......................................................................................................................................... 2-4-9Timing chart No. 10 ...................................................................................................................................... 2-4-10Timing chart No. 11 ...................................................................................................................................... 2-4-11Chart of image adjustment procedures ........................................................................................................ 2-4-12Maintenance parts list ................................................................................................................................... 2-4-15Periodic maintenance procedures ................................................................................................................ 2-4-16Optional devices supplied parts list .............................................................................................................. 2-4-18General wiring diagram ................................................................................................................................ 2-4-20

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