Kyocera ECOSYS FS-6950DN User manual

SERVICE
MANUAL
Published in January 2007
842F7115
2F7SM065
Rev.5
FS-6950DN

CONTENTS
1-1 Specifications
1-1-1 Specifications..........................................................................................................................................1-1-1
1-1-2 Parts names............................................................................................................................................1-1-3
(1) Overall...............................................................................................................................................1-1-3
(2) Operation panel.................................................................................................................................1-1-4
1-1-3 Machine cross section ............................................................................................................................1-1-5
1-2 Installation
1-2-1 Installation environment..........................................................................................................................1-2-1
1-2-2 Unpacking and installation......................................................................................................................1-2-2
(1) Installation procedure........................................................................................................................1-2-2
1-2-3 Installing the expanding memory (optional) ..........................................................................................1-2-10
1-2-4 Installing the memory card or hard disk (optional)................................................................................1-2-11
1-2-5 Installing the network interface card (optional) .....................................................................................1-2-12
1-3 Maintenance Mode
1-3-1 Maintenance mode .................................................................................................................................1-3-1
(1) Executing a maintenance item..........................................................................................................1-3-1
1-4 Troubleshooting
1-4-1 Paper misfeed detection.........................................................................................................................1-4-1
(1) Paper misfeed indication...................................................................................................................1-4-1
(2) Paper misfeed detection....................................................................................................................1-4-1
1-4-2 Self-diagnostic function...........................................................................................................................1-4-2
(1) Self-diagnostic function.....................................................................................................................1-4-2
(2) Self diagnostic codes ........................................................................................................................1-4-2
1-4-3 Image formation problems......................................................................................................................1-4-8
(1) Completely blank printout..................................................................................................................1-4-9
(2) All-black printout..............................................................................................................................1-4-10
(3) Dropouts..........................................................................................................................................1-4-11
(4) Black dots........................................................................................................................................1-4-11
(5) Black horizontal streaks. .................................................................................................................1-4-12
(6) Black vertical streaks.......................................................................................................................1-4-12
(7) Unsharpness...................................................................................................................................1-4-12
(8) Gray background.............................................................................................................................1-4-13
(9) Dirt on the top edge or back of the paper........................................................................................1-4-13
(10) Undulated printing at the left edge (scanning start position)...........................................................1-4-13
1-4-4 Electric problems ..................................................................................................................................1-4-14
1-4-5 Mechanical problems............................................................................................................................1-4-16
1-5 Assembly and Disassembly
1-5-1 Precautions for assembly and disassembly............................................................................................1-5-1
(1) Precautions .......................................................................................................................................1-5-1
(2) Drum..................................................................................................................................................1-5-1
(3) Toner container.................................................................................................................................1-5-1
1-5-2 Outer covers ...........................................................................................................................................1-5-2
(1) Detaching and refitting the top cover.................................................................................................1-5-2
(2) Detaching and refitting the right cover and left cover........................................................................1-5-3
1-5-3 Paper feed section..................................................................................................................................1-5-4
(1) Detaching and refitting the paper feed assembly (paper feed roller and pickup roller).....................1-5-4
(2) Detaching and refitting the retard roller.............................................................................................1-5-5
(3) Detaching and refitting the registration upper and lower roller..........................................................1-5-6
(4) Detaching and refitting the MP tray paper feed roller........................................................................1-5-8
1-5-4 Developer section.................................................................................................................................1-5-10
(1) Detaching and refitting the developer unit.......................................................................................1-5-10
1-5-5 Drum section.........................................................................................................................................1-5-11
(1) Detaching and refitting the drum unit ..............................................................................................1-5-11
(2) Detaching and refitting the main charger unit..................................................................................1-5-12
1-5-6 Transfer/separation section ..................................................................................................................1-5-13
(1) Detaching and refitting the transfer roller and separation charger brush unit .................................1-5-13
1-5-7 Fuser section ........................................................................................................................................1-5-15
(1) Detaching and refitting the fuser unit...............................................................................................1-5-15

(2) Detaching and refitting the fuser heater lamp M and S...................................................................1-5-16
(3) Detaching and refitting the heat roller .............................................................................................1-5-18
(4) Detaching and refitting the press roller............................................................................................1-5-19
(5) Detaching and refitting the fuser thermistor M, fuser thermistor S and thermal cutout...................1-5-20
1-5-8 PWBs....................................................................................................................................................1-5-22
(1) Detaching and refitting the engine PWB .........................................................................................1-5-22
(2) Detaching and refitting the main PWB ............................................................................................1-5-26
(3) Detaching and refitting the power source unit.................................................................................1-5-28
1-5-9 Others...................................................................................................................................................1-5-30
(1) Detaching and refitting the paper feed drive unit.............................................................................1-5-30
(2) Detaching and refitting the main drive unit......................................................................................1-5-31
(3) Detaching and refitting the laser scanner unit.................................................................................1-5-32
1-6 Firmware
1-6-1 Downloading firmware ............................................................................................................................1-6-1
(1) Downloading the firmware from the parallel interface.......................................................................1-6-2
(2) Downloading the firmware from the memory card.............................................................................1-6-3
(3) Downloading the firmware from the USB memory............................................................................1-6-5
2-1 Mechanical Construction
2-1-1 Paper feed section..................................................................................................................................2-1-1
(1) Paper cassette paper feeding ...........................................................................................................2-1-1
(2) MP tray paper feed section ...............................................................................................................2-1-2
(3) Paper feed conveying section...........................................................................................................2-1-3
2-1-2 Drum section...........................................................................................................................................2-1-4
(1) Drum section.....................................................................................................................................2-1-4
2-1-3 Expose section........................................................................................................................................2-1-5
(1) Laser scanner unit.............................................................................................................................2-1-5
2-1-4 Developing section..................................................................................................................................2-1-7
(1) Developer unit...................................................................................................................................2-1-7
2-1-5 Transfer/separation section ....................................................................................................................2-1-8
(1) Transfer/separation section...............................................................................................................2-1-8
2-1-6 Cleaning section .....................................................................................................................................2-1-9
2-1-7 Fuser section ........................................................................................................................................2-1-10
(1) Fuser unit ........................................................................................................................................2-1-10
2-1-8 Paper exit section/rear unit...................................................................................................................2-1-12
(1) Paper exit section/rear unit..............................................................................................................2-1-12
2-1-9 Duplex conveying section.....................................................................................................................2-1-14
(1) Duplex conveying section................................................................................................................2-1-14
2-2 Electrical Parts Layout
2-2-1 Electrical parts layout..............................................................................................................................2-2-1
(1) Electrical parts layout........................................................................................................................2-2-1
2-3 Operation of the PWBs
2-3-1 Power source unit...................................................................................................................................2-3-1
2-3-2 Engine PWB............................................................................................................................................2-3-3
2-3-3 Main PWB...............................................................................................................................................2-3-8
2-4 Appendixes
(1) Wiring diagram..................................................................................................................................2-4-1
(2) Repetitive defects gauge...................................................................................................................2-4-2

2F7-1
1-1-1
1-1-1 Specifications
Printing method...............................Semiconductor laser and electrophotography
Printing speeds...............................Simplex:
A3: 16 ppm
A4: 32 ppm
A5: 32 ppm
Duplex:
A3: 10 ppm
A4: 23 ppm
Paper sizes.....................................Paper cassette:
A3, A4, A5, B4, B5, ledger, letter, legal, envelope C4, envelope C5, ISO B5,
executive, oficio II, 8 kai, 16 kai, folio, and custom
MP tray:
A3, A4, A5, A6, B4, B5, B6, ledger, letter, legal, envelope monarch, envelope DL,
envelope C4, envelope C5, ISO B5, executive, envelope # 6, envelope # 9,
envelope # 10, hagaki, oufuku hagaki, oficio II, 8 kai, 16 kai, statement, folio,
yokei 2, yokei 4, and custom
Paper types.....................................Paper cassette:
Plain, preprinted, bond, recycled, rough, letterhead, color, prepunched, high quality,
and custom
MP tray:
Plain, transparency, preprinted, labels, bond, recycled, vellum, rough, letterhead,
color, prepunched, envelope, cardstock, thick, high quality, and custom
Paper feed source capacity............Paper cassette: 250 sheets (80 g/m2)
MP tray: 100 sheets (80 g/m2)
Output ray capacity.........................Top tray: 250 sheets (80 g/m2)
Face up tray (optional): PT-430: 250 sheets (80 g/m2)
Photo conductor..............................a-Si (diameter: 30mm/1 3/16")
Charging system.............................Contact charger roller method (positive charging)
Developing system .........................Single component developer
Transfer system..............................Transfer roller
Separation system..........................Separation brush (DC bias)
Fixing System.................................Heat fusing with a heat roller and a press roller
Charge erasing system...................Light emitted by LED
Cleaning system.............................Counter blade cleaning
Warm-up time (22 ° C/71.6 ° F, 60%RH) ...Power on: 15 seconds or less
Sleep: 15 seconds or less
First print out (A4)...........................23 seconds or less (Ready)
Resolution.......................................Fine 1200, Fast 1200, 600 dpi, 300 dpi
Monthly duty ...................................Average: 5,000 pages
Maximum: 150,000 pages
Operating systems..........................Microsoft Windows 95/98/Me/2000/XP,
Microsoft Windows NT4.0,
Microsoft Windows Server 2003,
Apple Macintosh OS 9,
Apple Macintosh OS X
Controller........................................PowerPC750CXr 400 MHz
Memory...........................................Standard: 64 MB
Maximum: 576 MB
Interface..........................................Standard:
USB: Hi-Speed USB, Full-Speed USB (USB memory slot)
Parallel: IEEE1284
Network: 10BASE-T/100BASE-TX, KUIO-LV slot
Option.............................................IB-11: Serial
IB-21E: 10BASE-T/100BASE-TX
Operation environment...................Temperature: 10 to 32.5°C/50 to 90.5°F
Relative humidity: 15 to 80%
Altitude: 2,500 m/8,202 ft maximum
Illumination: 1,500 lux maximum
Dimensions (W ×D ×H).................469 ×395 ×285 mm/18 7/16 ×15 9/16 ×11 1/4"

2F7-1
1-1-2
Weight (without toner container).....19.5 kg/43 lbs
Operating noise ..............................During printing: LpA = 50 dB (A)
During standby: LpA = 40 dB (A)
During sleep mode: Immeasurably low
(In accordance with EN ISO7779 [Bystander position, sound pressure level at the
front])

2F7
1-4-2
1-4-2 Self-diagnostic function
(1) Self-diagnostic function
This printer is equipped with self-diagnostic function. When a problem is detected, the printer stops printing and display an
error message on the operation panel. An error message consists of a message prompting a contact to service personnel,
total print count, and a four-digit error code indicating the type of the error. (The display varies depending on the type of
the error.)
(2) Self diagnostic codes
Code Contents Remarks
Causes Check procedures/corrective measures
0150 Engine PWB EEPROM error
Detecting engine PWB EEPROM com-
munication error.
Improper installa-
tion engine PWB
EEPROM.
Check engine PWB EEPROM installation,
Remedy.
Defective engine
PWB Replace the engine PWB (See page P.1-5- 22).
0420 Paper feeder communication error
Communication error between engine
PWB and optional paper feeder.
Improper installa-
tion paper feeder. Follow installation instruction carefully again.
Defective harness
betweenconnect-L
PWB (YC2) and
paper feeder inter-
face connector, or
improper connec-
tor insertion.
Reinsert the connector. Also check for conti-
nuity within the connector harness. If none,
remedy or replace the harness.
Defective harness
betweenconnect-L
PWB (YC6) and
engine PWB
(YC4), or improper
connector inser-
tion.
Reinsert the connector. Also check for conti-
nuity within the connector harness. If none,
remedy or replace the harness.
Defective engine
PWB. Replace the engine PWB (See page P.1-5- 22).
Defective paper
feeder. Replace the paper feeder.
Error code Total print
Call service
6000:012345
Error code
Error power off
F030
Error code
Call service
F000

PARTS LIST
Published in January 2006
842F7120
First Edition
FS-6950DN

- 1 -
CONTENTS
FIG.1 Covers .......................................................................2
FIG.2 Frames I ....................................................................4
FIG.3 Frames II ...................................................................6
FIG.4 Paper Cassette .........................................................8
FIG.5 Cassette Feed .........................................................10
FIG.6 Paper Feed .............................................................12
FIG.7 Imaging Unit ............................................................14
FIG.8 Developer Unit ........................................................16
FIG.9 Fuser Unit I ..............................................................18
FIG.10 Fuser Unit II .............................................................20
FIG.11 Driving Unit ..............................................................22
FIG.12 Duplex Unit ..............................................................24
FIG.13 Paper Exit ................................................................26
FIG.14 MPF .........................................................................28
FIG.15 Controller Box .........................................................30
FIG.16 Parts Package .........................................................32
• INDEX ...................................................................33

- 2 -
2F7
FIG. 1 Covers
101
101
9
5
4
1
2
7
6
101
8
3
13
12
A02
10
11
A01

KYOCERA-MITA FS-6950DN service manual
KYOCERA-MITA FS-6950DN service manual
KYOCERA-MITA FS-6950DN service manual
KYOCERA-MITA FS-6950DN service manual
KYOCERA-MITA FS-6950DN service manual
KYOCERA-MITA FS-6950DN service manual
KYOCERA-MITA FS-6950DN service manual
KYOCERA-MITA FS-6950DN service manual
KYOCERA-MITA FS-6950DN service manual