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Make/Model Information:

  • Brand:   Kyocera-mita
  • Models included:
    • Kyocera-Mita KM-1620
    • Kyocera-Mita KM-2020

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English
  • Number of pages:   286
  • File size:  ∼ 17.10  MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMKT-1016

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

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SERVICE
MANUAL
Published in Dec. ’03
842C9113
Revision 3
KM-1620
KM-2020
CONTENTS
1-1 Specifications
1-1-1 Specifications
1-1-2 Parts names and their functions
(1) Copier
(2) Operation panel
1-1-3 Machine cross section
1-1-4 Drive system
1-2 Handling Precautions
1-2-1 Drum
1-2-2 Toner
1-2-3 Installation environment
1-3 Installation
1-3-1 Unpacking and installation
(1) Installation procedure
1-3-2 Setting initial copy modes
1-3-3 Installing the paper feeder (option)
1-3-4 Installing the DP (option)
1-3-5 Installing the duplex unit (option)
1-3-6 Installing the drawer heater (option)
1-3-7 Installing the key counter (option)
1-4 Maintenance Mode
1-4-1 Maintenance mode
(1) Executing a maintenance item
(2) Maintenance mode item list
(3) Contents of maintenance mode items
1-4-2 Copier management
(1) Using the copier management mode
(2) Setting department management items
(3) Copy default
1-5 Troubleshooting
1-5-1 Paper misfeed detection
(1) Paper misfeed indication
(2) Paper misfeed detection conditions
(3) Paper misfeeds
1-5-2 Self-diagnosis
(1) Self-diagnostic function
(2) Self-diagnostic codes
1-5-3 Image formation problems
(1) No image appears (entirely white).
(2) No image appears (entirely black).
(3) Image is too light.
(4) Background is visible.
(5) A white line appears longitudinally.
(6) A black line appears longitudinally.
(7) A black line appears laterally.
(8) One side of the copy image is darker than the other.
(9) Black dots appear on the image.
(10) Image is blurred.
(11) The leading edge of the image is consistently misaligned with the original.
(12) The leading edge of the image is sporadically misaligned with the original.
(13) Paper creases.
(14) Offset occurs.
(15) Image is partly missing.
(16) Fixing is poor.
(17) Image is out of focus.
(18) Image center does not align with the original center.
1-5-4 Electrical problems
(1) The machine does not operate when the power switch is turned on.
(2) The drive motor does not operate (C2000).
(3) The registration motor does not operate.
(4) The exit motor does not operate.
(5) The scanner motor does not operate.
(6) Cooling fan motor 1 does not operate.
(7) Cooling fan motor 2 does not operate.
(8) The paper feed clutch does not operate.
(9) The bypass paper feed clutch does not operate.
(10) The cleaning lamp does not turn on.
(11) The exposure lamp does not turn on.
(12) The exposure lamp does not turn off.
(13) The fixing heater does not turn on (C6000).
(14) The fixing heater does not turn off.
(15) Main charging is not performed.
(16) Transfer charging is not performed.
(17) No developing bias is output.
(18) The original size is not detected.
(19) The original size is not detected correctly.
(20) The message requesting paper to be loaded is shown when paper is present in the drawer.
(21) The size of paper in the drawer is not displayed correctly
(22) A paper jam in the paper feed, paper conveying or fixing section is indicated when
the power switch is turned on.
(23) The message requesting covers to be closed is displayed when the front cover and
left cover are closed.
(24) Others.
1-5-5 Mechanical problems
(1) No primary paper feed.
(2) No secondary paper feed.
(3) Skewed paper feed.
(4) The scanner does not travel.
(5) Multiple sheets of paper are fed at one time
(6) Paper jams.
(7) Toner drops on the paper conveying path.
(8) Abnormal noise is heard.
1-6 Assembly and Disassembly
1-6-1 Precautions for assembly and disassembly
(1) Precautions
(2) Running a maintenance item
1-6-2 Paper feed section
(1) Detaching and refitting the separation pulley
(2) Detaching and refitting the forwarding pulley and paper feed pulley
(3) Detaching and refitting the paper conveying unit
(4) Detaching and refitting the bypass paper feed pulley and bypass separation pad
(5) Detaching and refitting the registration left roller
(6) Detaching and refitting the registration cleaner
(7) Adjustment after roller and clutch replacement
(7-1) Adjusting the leading edge registration of image printing
(7-2) Adjusting the leading edge registration for memory image printing
(7-3) Adjusting the center line of image printing
(7-4) Adjusting the margins for printing
(7-5) Adjusting the amount of slack in the paper
1-6-3 Optical section
(1) Detaching and refitting the exposure lamp
(2) Detaching and refitting the scanner wires
(2-1) Detaching the scanner wires
(2-2) Fitting the scanner wires
(3) Detaching and refitting the ISU (reference)
(4) Detaching and refitting the laser scanner unit
(5) Adjusting the longitudinal squareness (reference)
(6) Adjusting magnification of the scanner in the main scanning direction
(7) Adjusting magnification of the scanner in the auxiliary scanning direction
(8) Adjusting the scanner leading edge registration
(9) Adjusting the scanner center line
(10) Adjusting the margins for scanning an original on the contact glass
1-6-4 Drum section
(1) Detaching and refitting the drum unit
(2) Detaching and refitting the drum separation claws
(3) Detaching and refitting the main charger unit
1-6-5 Developing section
(1) Detaching and refitting the developing unit
1-6-6 Transfer section
(1) Detaching and refitting the transfer roller
1-6-7 Fixing section
(1) Detaching and refitting the fixing unit
(2) Detaching and refitting the press roller
(3) Detaching and refitting the fixing heater M and S
(4) Detaching and refitting the heat roller separation claws
(5) Detaching and refitting the heat roller
(6) Detaching and refitting the fixing thermostat
(7) Detaching and refitting the fixing thermistor
1-7 Requirements on PCB Replacement
1-7-1 Upgrading the firmware on the main PCB
1-7-2 Adjustment-free variable resisters (VR)
1-7-3 Remarks on engine PCB or main PCB replacement
2-1 Mechanical construction
2-1-1 Paper feed section
2-1-2 Optical section
(1) Original scanning
(2) Image printing
2-1-3 Drum section
2-1-4 Developing section
(1) Formation of magnetic brush
(2) Single component developing system
2-1-5 Transfer and separation sections
2-1-6 Fixing section
(1) Fixing temperature system
(2) Fixing temperature control based on ambient temperature
2-1-7 Exit and switchback sections
2-1-8 Duplex section
(1) Paper conveying operation in duplex copying
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout
(1) PCBs
(2) Switches and sensors
(3) Motors
(4) Other electrical components
2-3 Operation of the PCBs
2-3-1 Power source PCB
2-3-2 Main PCB
2-3-3 Engine PCB
2-3-4 Operation unit PCB
2-3-5 CCD PCB
2-4 Appendixes
Timing chart No. 1
Timing chart No. 2
Timing chart No. 3
Timing chart No. 4
Chart of image adjustment procedures
Maintenance parts list
Periodic maintenance procedures
Optional devices supplied parts list
General wiring diagram
1-1-1 Specifications
Copying system
Originals
Maximum size: A3/11" 17"
Original feed system
Copy paper
Drawer: 64 105 g/m2
Bypass table: 45 160 g/m2
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
Minimum: A6R /51/2" 81/2"
Magnification ratios
Copy speed
16cpm machine
A4: 16 copies/min.
A4R: 13 copies/min.
A3: 8 copies/min.
A5R: 10 copies/min.
A6R: 10 copies/min.
B5: 16 copies/min.
B5R: 13 copies/min.
B4 (257 364 mm): 8 copies/min.
11" 81/2": 16 copies/min.
81/2" 11": 10 copies/min.
11" 17": 8 copies/min.
81/2" 14": 8 copies/min.
First copy time
Warm-up time
Paper feed system
Capacity:
Drawers: 300 sheets (80 g/m2)
Manual feed
Capacity:
Bypass: 50 sheets (A4/11" 81/2" or less)
25 sheets (A3, B4, 11" 17", 81/2" 14")
Paper ejection system
Capacity: 250 sheets (80 g/m2)
Continuous copying
Photoconductor
Charging system
Recording system
Developing system
Toner: magnetism toner
Toner replenishing: automatic from a toner container
Transfer system
Separation system
Fixing system
Heat source: halogen heaters (120 V specifications:main 550 W, sub 400W/ 220-240
V specifications:main 600 W, sub 450 W)
Control temperature: 170C/338F (180C/356F on and after 6th sheet)
Abnormally high temperature protection device: 180C/356F thermostat
Fixing pressure: 44.1 N
Charge erasing system
Cleaning system
Scanning system
Bitmap memory
Image storage memory
Resolution
20cpm machine
A4: 20 copies/min.
A4R: 13 copies/min.
A3: 10 copies/min.
A5R: 10 copies/min.
A6R: 10 copies/min.
B5: 20 copies/min.
B5R: 13 copies/min.
B4 (257 364 mm): 11 copies/min.
11" 81/2": 20 copies/min.
8 1/2 " 11": 13 copies/min.
11" 17": 10 copies/min.
8 1/2 " 14": 11 copies/min.
Light source
Dimensions
22 5 /8 " (W) 213/4 " (D) 211 /2" (H)
Weight
Floor requirements
32 5 /8 " (W) 213 /4 " (D)
Functions
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
220 240 V AC, 50 Hz, 5.0 A (Average)
Options
Duplex unit
Copy paper
Paper type: Plain paper, recycled paper and colored paper
Paper sizes
Power source
Dimensions
141/2" (W) 21/16" (D) 71/16" (H)
Weight
Section Jam code Description Conditions
System
Paper feed
section
Paper con-
section
No paper feed
Cover open JAM
Secondary paper feed
timeout
No paper feed from the
bypass tray
No paper feed from the
drawer 1
No paper feed from the
drawer 2* (first paper
feeder)
No paper feed from the
drawer 3* (second paper
feeder)
No paper feed from the
drawer 4* (third paper
feeder)
Misfeed in vertical paper
conveying 1
Misfeed in vertical paper
conveying 2
Multiple sheets in the by-
pass tray
Multiple sheets in the
drawer 1
When the power switch is turned on, the machine detects
activation of the registration switch (RSW), the exit switch
(ESW) or the feedshift switch (FSSW).
A cover open state is detected during copying.
When the machine waits for secondary paper feed, 15 s or
more have elapsed.
The registration switch (RSW) does not turn on within 1680
ms of the bypass paper feed clutch (BYPPFCL) turning on;
the clutch is then successively held off for 1 s and turned
back on once, but the switch again fails to turn on within
1680 ms.
The registration switch (RSW) does not turn on within 1254
ms of the paper feed clutch (PFCL) turning on; the clutch is
then successively held off for 1 s and turned back on once,
but the switch again fails to turn on within 1254 ms.
The registration switch (RSW) does not turn on within 2780
ms of the drawer paper feed clutch 1 (DPFCL1)* turning on;
the clutch is then successively held off for 1 s and turned
back on once, but the switch again fails to turn on within
2780 ms.
The drawer feed switch 1 (DFSW1)* does not turn on within
2490 ms of the drawer paper feed clutch 2 (DPFCL2)* turn-
ing on; the clutch is then successively held off for 1 s and
turned back on once, but the switch again fails to turn on
within 2490 ms.
The drawer feed switch 2 (DFSW2)* does not turn on within
2490 ms of the drawer paper feed clutch 3 (DPFCL3)* turn-
ing on; the clutch is then successively held off for 1 s and
turned back on once, but the switch again fails to turn on
within 2490 ms.
The registration switch (RSW) does not turn on within 2340
ms of drawer feed switch 1 (DFSW1)* turning on.
The drawer feed switch 1 (DFSW1)* does not turn off within
2050 ms of drawer feed switch 2 (DFSW2)* turning on.
The drawer feed switch 1 (DFSW1)* does not turn off within
2050 ms of drawer feed switch 2 (DFSW2)* turning off.
The drawer feed switch 1 (DFSW1)* does not turn on within
2050 ms of drawer feed switch 2 (DFSW2)* turning on.
The registration switch (RSW) does not turn off within 5320
ms of registration switch (RSW) turning on.
The registration switch (RSW) does not turn off within 1680
ms of bypass paper feed solenoid (BYPPFSOL) turning on.
The registration switch (RSW) does not turn off within 5320
ms of registration switch (RSW) turning on.
The registration switch (RSW) does not turn off within 1254
ms of paper feed clutch (PFCL) turning on.
*: Optional.
PARTS LIST
Published in July.’05
2C970954
Revision 4
CS-1620/2020
Contains: DP-410
CONTENTS
FIG. 1 Exterior Covers
FIG. 2 Frames
FIG. 3 Cassette
FIG. 4 Conveying Section
FIG. 5 Paper Feed Section
FIG. 6 Bypass Section
FIG. 7 Exit Section
FIG. 8 Scanner Section
FIG. 9 Imaging Unit
FIG. 10 Fuser Unit
FIG. 11 Driving & Cooling Section
FIG. 12 Electrical Components
FIG. 13 Operation Unit
FIG. 14 Original Holder
FIG. 15 Option I (DU-410)
FIG. 16 Option II
INDEX
PARTS LIST
Published in June 2005
Version 2.0
PARTS LIST
Published in June 2005
Version 2.0


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