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Kyocera TASKalfa 550c, 650c, 750c Service Manual

Service Manual Kyocera TASKalfa 550c, 650c, 750c;
This manual, Kyocera TASKalfa 550c, 650c, 750c, is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Kyocera TASKalfa 550c, 650c, 750c copier.
You can print, zoom or read any diagram, picture or page from this Service Manual. Every chapter on this manual is fully detailed and contain all the simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of Kyocera TASKalfa 550c, 650c, 750c photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:

1.1 Main Feature of 550c/650c/750c

2.1 Specifications
2.1.1 General
2.1.2 Copy
2.1.3 Print
2.1.4 Scan
2.1.5 e-Filing
2.1.6 Internet Fax
2.1.7 Network Fax
2.2 Accessories
2.3 Options
2.4 Supplies
2.5 System List

3.1 Sectional View
3.1.1 Front side
3.1.2 Rear side
3.2 Electric Parts Layout
3.3 Symbols and Functions of Various Components
3.3.1 Motors
3.3.2 Fans
3.3.3 Sensors
3.3.4 Switches
3.3.5 Electromagnetic spring clutches
3.3.6 Solenoids
3.3.7 PC boards
3.3.8 Lamps, coils, and heaters
3.3.9 Thermistors, thermopiles, and thermostats
3.3.10 Transformer
3.3.11 Others
3.4 System Block Diagram
3.5 Disassembly and Replacement of Covers
3.5.1 Front lower cover
3.5.2 Front cover
3.5.3 Top right cover
3.5.4 Right top cover
3.5.5 Top front cover
3.5.6 Top left cover
3.5.7 FAX cover
3.5.8 Receiving tray
3.5.9 Left middle cover
3.5.10 Left top cover
3.5.11 Left lower cover
3.5.12 Bypass tray unit (Removing tray arm)
3.5.13 Duplexing unit front cover
3.5.14 Duplexing unit rear cover
3.5.15 Paper feed cover
3.5.16 RADF connector cover
3.5.17 Right rear cover
3.5.18 Rear cover
3.5.19 Upper exhaust fan cover
3.5.20 Top rear cover
3.5.21 Left corner cover
3.5.22 Right corner cover

4.1 General Description
4.1.1 Expression of Colors
4.1.2 4-Step Copy Process
4.2 Description of Operation
4.3 Functions

5.1 Overview of Operation
5.2 Description of Operation
5.2.1 Warming-up
5.2.2 Ready (ready for copying)
5.2.3 Drawer feed copying (1st drawer paper feeding)
5.2.4 Bypass feed copying
5.2.5 Interruption copying
5.3 Detection of Abnormality
5.3.1 Types of abnormality
5.3.2 Description of abnormality
5.4 Flow Chart
5.4.1 Power ON to ready
5.4.2 Automatic feed copying

6.1 General Description
6.2 Items Shown on the Display Panel
6.2.1 Display
6.2.2 Message
6.3 Relation between the Equipment State and Operator's Operation
6.4 Description of Operation
6.4.1 Dot matrix LCD circuit
6.4.2 LED display circuit
6.5 Disassembly and Replacement
6.5.1 Control panel unit
6.5.2 Control panel rear cover
6.5.3 Display PC board (DSP)
6.5.4 Panel inverter board (P-INV)
6.5.5 Shielding plate
6.5.6 Key PC board-1 (KEY1)
6.5.7 Key PC board-2 (KEY2)
6.5.8 Touch panel (TCP)
6.5.9 Control panel cover

7.1 General Description
7.2 Construction
7.3 Functions
7.4 Description of Operation
7.4.1 Scanning operation
7.4.2 Initialization at power-ON
7.5 Electric Circuit Description
7.5.1 Scan motor control circuit
7.5.2 Exposure Lamp Control Circuit
7.5.3 General Description of CCD Control
7.5.4 Automatic Original Size Detection Circuit
7.6 Disassembly and Replacement
7.6.1 Original glass
7.6.2 Lens cover
7.6.3 SLG board cooling fan (F1)
7.6.4 Automatic original detection sensor (S1-5)
7.6.5 Exposure lamp (EXP)
7.6.6 Exposure lamp cooling fan-1 (F2)
7.6.7 Scanner unit cooling fan-1 (F3)
7.6.8 Exposure lamp cooling fan-2 (F26)
7.6.9 Upper exhaust fan (left) (F29)
7.6.10 Upper exhaust fan (right) (F30)
7.6.11 Lens unit
7.6.12 Scan motor (M1)
7.6.13 Carriage-1
7.6.14 Inverter board (INV)
7.6.15 Carriage wire / carriage-2
7.6.16 Carriage home position sensor (S6)
7.6.17 Platen sensor (S7)
7.6.18 SLG board (SLG)
7.7 Adjustment of the Scanner Section
7.7.1 Adjustment carriages-1 and -2 positions
7.7.2 Belt tension adjustment of the Scan motor

8.1 General Description
8.2 Configuration
8.3 Image Processing PC Board (IMG)
8.3.1 Features
8.3.2 Functions of image processing circuit
8.4 System Control PC Board (SYS)
8.4.1 Features
8.4.2 Functions of image processing circuit
8.5 Image Related Adjustment
8.5.1 Adjustment Order
8.5.2 Adjustment of the Auto-Toner Sensor
8.5.3 Performing Image Quality Control
8.5.4 Adjustment of Color Registration Control
8.5.5 Image Dimensional Adjustment (General description)
8.5.6 Paper alignment at the registration roller
8.5.7 Printer-related image dimensional adjustment
8.5.8 Scanner-related image dimensional adjustment
8.6 Image Quality Adjustment (Copying Function)
8.6.1 Automatic gamma adjustment
8.6.2 Density adjustment
8.6.3 Color balance adjustment
8.6.4 Gamma balance adjustment
8.6.5 Background adjustment
8.6.6 Judgment threshold for ACS (common for copy & network scan)
8.6.7 Sharpness adjustment
8.6.8 Setting range correction
8.6.9 Adjustment of smudged/faint text
8.6.10 Color Adjustment of Marker
8.6.11 Beam level conversion setting
8.6.12 Maximum toner density adjustment to paper type
8.6.13 Maximum text density adjustment
8.6.14 Text/Photo reproduction level adjustment
8.6.15 Black reproduction switching at the Twin color copy mode
8.6.16 Black header density level adjustment
8.6.17 Black area adjustment in twin color copy mode
8.6.18 Judgment threshold adjustment for blank original
8.6.19 Background offsetting adjustment for ADF
8.7 Image Quality Adjustment (Printing Function)
8.7.1 Automatic gamma adjustment
8.7.2 Gamma balance adjustment (Black Mode)
8.7.3 Color balance adjustment
8.7.4 Adjustment of faint text
8.7.5 Upper limit value at Toner Saving Mode
8.7.6 Maximum toner density adjustment (OHP)
8.7.7 Fine line enhancement switchover
8.7.8 "PureBlack/PureGray" threshold adjustment (PS)
8.7.9 "PureBlack/PureGray" threshold adjustment (PCL)
8.7.10 "PureBlack/PureGray" threshold adjustment (XPS)
8.7.11 "PureBlack/PureGray" threshold adjustment (Twin color print)
8.7.12 Toner limit threshold adjustment
8.7.13 Screen switchover
8.7.14 Sharpness adjustment
8.7.15 Adjustment of smudged text (1200 dpi)
8.7.16 Thin line width lower limit adjustment
8.7.17 Color/black judgment setting for twin color printing images
8.7.18 Background adjustment
8.8 Image Quality Adjustment (Scanning Function)
8.8.1 Gamma balance adjustment
8.8.2 Density adjustment
8.8.3 Background adjustment (Color Mode)
8.8.4 Judgment threshold for ACS (common for copy & network scan)
8.8.5 Sharpness adjustment
8.8.6 Setting range correction
8.8.7 Fine adjustment of black density
8.8.8 RGB conversion method selection
8.8.9 Adjustment of saturation
8.8.10 Background processing offset adjustment
8.9 Image Quality Adjustment (FAX Function)
8.9.1 Density adjustment
8.9.2 Beam level conversion setting

9.1 General Description
9.2 Structure
9.3 Electric Circuit Description
9.3.1 Laser diode control circuit
9.3.2 Polygonal motor control circuit
9.3.3 Mirror motor control circuit
9.4 Disassembly and Replacement
9.4.1 Laser optical unit
9.4.2 Laser optical unit cooling fan (front) (F22)
9.4.3 Laser optical unit cooling fan (rear) (F23)
9.4.4 Shutter
9.4.5 Shutter motor
9.4.6 Shutter sensor (home position)
9.4.7 Shutter sensor (end position)

10.1 General Descriptions
10.2 Composition
10.3 Functions
10.4 Description of Operation
10.4.1 Drive of rollers
10.4.2 Operation of bypass pickup roller
10.4.3 Operation of drawer pickup roller
10.4.4 Paper size detection
10.4.5 Separation of paper
10.4.6 General operation
10.5 Electric Circuit Description
10.5.1 Registration motor control circuit
10.5.2 Transport motor-1 control circuit
10.5.3 Transport motor-2 control circuit
10.5.4 Feed motor control circuit
10.5.5 Feed/Transport motor control circuit
10.5.6 Tray-up motor-1 control circuit
10.5.7 Tandem LCF tray-up motor control circuit
10.5.8 Tandem LCF end fence motor control circuit
10.6 Disassembly and Replacement
10.6.1 Bypass feed tray
10.6.2 Bypass feed unit
10.6.3 Bypass pickup solenoid (SOL8)
10.6.4 Bypass paper sensor (S71)
10.6.5 Bypass pickup roller
10.6.6 Bypass upper unit
10.6.7 Bypass feed roller
10.6.8 Bypass transport roller
10.6.9 Bypass motor(M12)
10.6.10 1st drawer idling roller
10.6.11 Bypass separation roller
10.6.12 Bypass feed sensor (S72)
10.6.13 Bypass paper size detection sensor (S70)
10.6.14 Drawer feeding unit
10.6.15 Feed roller
10.6.16 Pickup roller
10.6.17 Separation roller
10.6.18 Transport roller
10.6.19 Detection sensor (S73/S81/S89)
10.6.20 Feed sensor (S78/S86/S94)
10.6.21 Transport sensor (S77/S85/S93)
10.6.22 Empty sensor (S75/S83/S91))
10.6.23 Tray-up sensor (S76/S84/S92)
10.6.24 Bottom sensor (S74/S82/S90)
10.6.25 Registration roller (Rubber)
10.6.26 Paper dust cleaning brush (registration roller)
10.6.27 Registration guide
10.6.28 Registration sensor (S52)
10.6.29 Registration roller (Metal)
10.6.30 2nd transfer side paper clinging detection sensor (S51)
10.6.31 Media sensor (S69)
10.6.32 Feed cover sensor (S114)
10.6.33 Drawer
10.6.34 Drawer paper size detection sensor-1/2 (S79/S80/S87/S88)
10.6.35 Registration motor (M39)
10.6.36 Feed/transport drive unit
10.6.37 Transport motor-1 (M40)
10.6.38 Transport motor-2 (M41)
10.6.39 Feed motor (M42)
10.6.40 Feed/transport motor (M43)
10.6.41 Paper feed drive unit
10.6.42 Tandem LCF transport clutch (CLT4)/Tandem LCF feed clutch (CLT5)
10.6.43 Tray-up motor-1 (M44)
10.6.44 Transfer belt paper clinging detection sensor (S47)
10.6.45 Tandem LCF tray-up motor (M46)
10.6.46 Tandem LCF end fence motor (M47)
10.6.47 Tandem LCF standby unit
10.6.48 Tandem LCF feeding unit
10.6.49 Stopper opening/closing solenoid (front) (SOL10)/Stopper opening/closing detection sensor (front) (S110)
10.6.50 Stopper opening/closing solenoid (rear)/Stopper opening/closing detection sensor (rear) (S111)
10.6.51 Tandem LCF bottom sensor (S107)
10.6.52 Standby side tray paper amount detection sensor (S106)
10.6.5 3End fence home position sensor (S112)
10.6.5 4End fence stop position sensor (S113)
10.6.5 5Standby side empty sensor (S109)
10.6.5 6Standby side tray detection sensor (S108)
10.6.5 7Tandem LCF solenoid (SOL9)
10.7 Adjustment of the Paper Feeding System
10.7.1 Adjustment of the media sensor position
10.7.2 Separation roller pressure force adjustment
10.7.3 Sheet sideways deviation caused by paper transporting adjustment
10.7.4 Adjusting the clearance of the paper and side guides

11.1 General description
11.2 Composition
11.3 Functions
11.4 Electric Circuit Description
11.4.1 High-voltage transformer control circuit
11.4.2 Drum Surface Potential Sensor Control Circuit
11.4.3 Drum Temperature Detection Circuit
11.4.4 Drum motor control circuit
11.4.5 Temperature/humidity detection circuit
11.4.6 Toner motor control circuit
11.4.7 Waste toner transport motor control circuit
11.4.8 Auto-toner Circuit
11.5 Disassembly and Replacement
11.5.1 Pulling out the process unit (EPU tray)
11.5.2 Drum cleaner unit
11.5.3 Drum
11.5.4 Drum cleaning blade
11.5.5 Blade side seal
11.5.6 Main charger unit
11.5.7 Main charger grid
11.5.8 Needle electrode cleaner
11.5.9 Needle electrode
11.5.10Discharge LED (ERS-K/ERS-C/ERS-M/ERS-Y)
11.5.12Sub-hopper toner sensor (S38/S39/S40/S41)
11.5.13EPU cover
11.5.14Sub-hopper toner motor (K/C/M/Y) (M19/M20/M21/M22)
11.5.15EPU PC board
11.5.16Drum surface potential sensors control PC board (V0S board)
11.5.17Auger lock detection sensor (S42)
11.5.18Main charger ozone exhaust fan-K/-C/-M/-Y (F17/F1/F19/F20)
11.5.19Needle electrode cleaner detection sensor-K/C/M/Y (S30/S31/S32/S33)
11.5.20Needle electrode cleaner motor-K/-C/-M/-Y (M23/M24/M25/M26)
11.5.21V0 sensor shutter solenoid (K/C/M/Y) (SOL4/SOL5/SOL6/SOL7)
11.5.22Drum surface potential sensor (K/C/M/Y) (S34/S35/S36/S37)
11.5.23Drum thermistor (K/Y) (THM1/THM2)
11.5.24Developer unit
11.5.25Developer material
11.5.26Developer sleeve
11.5.27Doctor blade
11.5.28Auto-toner sensor-K/C/M/Y (S26/S27/S28/S29)
11.5.29Drum drive unit
11.5.30Drum motor-K (M27)
11.5.31Drum motor-YMC (M28)
11.5.32K drum phase sensor (S44)
11.5.33Color drum phase sensor (S43)
11.5.34Developer unit motor-K/YMC (M29)/(M31)
11.5.35Developer unit mixer motor-K/YMC (M30)/(M32)
11.5.36Developer drive unit
11.5.37Waste toner box
11.5.38Waste toner amount detection sensor (S13)
11.5.39Waste toner box full detection sensor (S14)
11.5.40Waste toner box detection sensor (S16)
11.5.41Ozone filter-1
11.5.42Ozone filter-2
11.5.43Toner filter
11.5.44Toner motor (K/C/M/Y) (M15,/M16/M17/M18)
11.5.45Toner cartridge paddle rotation detection sensor-K/C/M/Y (S8/S9/S10/S11)
11.5.46Waste toner transport motor (M33)
11.5.47Ozone suctioning fan (F24)
11.5.48Toner cartridge heat insulation fan (F21)
11.5.49Toner cooling exhaust fan (F31)
11.5.50Temperature/humidity sensor (S12)
11.5.51Toner motor interlock switch (SW3)
11.5.52EPU cooling fan (F14)
11.5.53Scattered toner suctioning fan (F25)
11.6 Adjustment of the Process Unit Related Section
11.6.1 High-Voltage Transformer Setting
11.6.2 Adjustment of the Auto-Toner Sensor
11.6.3 Adjustment of the doctor-sleeve gap

12.1 General Descriptions
12.2 Composition
12.3 Functions
12.4 General description of operation
12.4.1 Self steering mechanism
12.4.2 Printing in the color modes
12.4.3 Printing in the black mode
12.4.4 Color registration control
12.5 Electric Circuit Description
12.5.1 Transfer belt motor control circuit
12.5.2 Transfer belt cam motor control circuit
12.6 Disassembly and Replacement
12.6.1 Pulling out the transfer belt unit
12.6.2 2nd transfer facing roller cleaning pad
12.6.3 Transfer belt cleaning unit
12.6.4 Transfer belt cleaning blade
12.6.5 Transfer belt cleaner side seal
12.6.6 Transfer belt unit (TBU)
12.6.7 Transfer belt
12.6.8 Transfer belt motor (M13)
12.6.9 Transfer belt cam motor (M14)
12.6.10Transfer belt contact/release detection sensor (S46)
12.6.111st transfer roller (Y/M/C/K)
12.6.12Drive roller / Drive roller cleaning mylar
12.6.13Tension roller
12.6.142nd transfer facing roller
12.6.152nd transfer unit (TRU)
12.6.162nd transfer roller
12.6.172nd transfer roller lubricant unit
12.6.182nd transfer roller cleaning blade
12.6.192nd transfer roller side seal
12.6.20TRU waste toner box
12.6.21TRU waste toner amount detection sensor (S17)
12.6.22TRU waste toner auger drive section
12.6.23TRU waste toner transport motor (M11)
12.6.24TRU waste toner motor (M10)
12.6.252nd transfer drive unit
12.6.262nd transfer motor (M9)
12.6.272nd transfer roller contact/release clutch (CLT2)
12.6.282nd transfer roller drive clutch (CLT3)
12.6.292nd transfer roller contact/release detection sensor (S50)
12.7 Adjustment of the transfer belt
12.7.1 Adjustment of the degree of the transfer belt unit parallelization

13.1 General Description
13.2 Composition
13.3 Principle of the Sensor
13.4 Flow Chart of Control Procedure
13.5 Disassembly and Replacement
13.5.1 Image quality control unit
13.5.2 Image position aligning sensor (front) (S20)
13.5.3 Image position aligning sensor (center) (S21)
13.5.4 Image position aligning sensor (rear) (S22)
13.5.5 Image quality sensor (S23)
13.5.6 Image quality shutter solenoid (SOL3)
13.6 Performing Image Quality Control
14.1 General Description
14.2 Composition
14.3 Functions
14.3.1 Fuser belt section
14.3.2 Pressure roller section
14.3.3 IH coil section
14.3.4 Fuser drive section
14.4 Description of Operation
14.5 Electric Circuit Description
14.5.1 Fuser unit control circuit
14.5.2 IH coil
14.5.3 Fuser motor control circuit
14.6 Disassembly and Replacement
14.6.1 Fuser unit
14.6.2 Pressure roller cover
14.6.3 Transport guide-1
14.6.4 Transport guide-2
14.6.5 Entrance guide cover
14.6.6 Separation finger
14.6.7 Separation plate
14.6.8 Pressure roller / Pressure roller heater lamp (LAMP)
14.6.9 Fuser belt / Fuser roller / Fuser belt guide / Satellite roller
14.6.10Fuser belt rotation detection sensor (S49)
14.6.11Fuser belt center thermostat (THMO4) / Fuser belt side thermostat (THMO5)
14.6.12Fuser belt edge thermistor (THM6)
14.6.13Pressure roller center thermistor (THM3) /Pressure roller side thermistor (THM4) / Pressure roller edge thermistor (THM5)
14.6.14Pressure roller contact/release sensor (S48)
14.6.15Pressure roller center thermostat (THMO2) / Pressure roller side thermostat (THMO3)
14.6.16IH coil
14.6.17Fuser belt center thermopile (THMP1) / Fuser belt side thermopile (THMP2)
14.6.18Fuser motor (M6)
14.6.19Pressure roller contact/release clutch (CLT1)
14.6.20Exit paper cooling fan (rear) (F15)
14.6.21IH cooling fan-1 (F8) / IH cooling fan-2 (F9)
14.6.22IH board (IH)
14.6.23Fuser unit jam releasing LED (LED)
14.7 Gap Adjustment for Fuser Unit
14.7.1 Gap adjustment for fuser belt thermostats
14.7.2 Gap adjustment for pressure roller thermistors
14.7.3 Gap adjustment for pressure roller thermostats
14.7.4 Gap adjustment for separation plate

15.1 General Description
15.2 Composition
15.3 Functions
15.3.1 Paper exit unit
15.3.2 Bridge unit
15.3.3 Duplexing bridge unit
15.3.4 Duplexing unit
15.4 Description of Operations
15.4.1 Paper transport paths
15.4.2 Circulation during duplex printing
15.5 Flow Chart for duplex printing
15.6 Disassembly and Replacement
15.6.1 Upper exit section cooling fan-1(F32) / Upper exit section cooling fan-2 (F33)
15.6.2 Lower exit section cooling fan-1(F34) / Lower exit section cooling fan-2 (F35)
15.6.3 Lower exit section cooling fan-3(F36)
15.6.4 Exit motor (M2)
15.6.5 Upper paper exit sensor (S61) / Upper exit tray paper full detection sensor (S62)
15.6.6 Lower paper exit sensor (S63)
15.6.7 Reverse section stationary jam detection sensor (S60)
15.6.8 Reverse path cover switch (SW5)
15.6.9 Upper paper exit roller
15.6.10Lower paper exit roller
15.6.11Bridge unit
15.6.12Bridge unit front cover
15.6.13Bridge unit lower cover
15.6.14Bridge unit transport entrance motor (M4) / Reverse motor (M3)
15.6.15Bridge unit transport exit motor (M5)
15.6.16Bridge unit upper cover
15.6.17Bridge unit transport roller-1
15.6.18Bridge unit transport roller-2
15.6.19Bridge unit transport roller-3
15.6.20Reverse roller
15.6.21Bridge unit exit roller-1
15.6.22Bridge unit exit roller-2
15.6.23Transport path switching solenoid-1 (SOL1)
15.6.24Transport path switching solenoid-2 (SOL2)
15.6.25Bridge unit path entrance sensor (S55)
15.6.26Bridge unit path exit sensor (S56)
15.6.27Reverse sensor (S59)
15.6.28Reverse section stationary jam detection sensor (S58)
15.6.29Exit paper cooling fan (front) (F5)
15.6.30Bridge unit cooling fan (front) (F6)
15.6.31Bridge unit cooling fan (rear) (F7)
15.6.32Front cover opening/closing detection switch (SW9) / Bridge unit connecting detection switch (SW8)
15.6.33Duplexing bridge unit
15.6.34Duplexing unit opening/closing detection sensor (S64)
15.6.35Reverse path sensor (S57)
15.6.36Duplexing bridge unit transport roller
15.6.37Duplexing unit upper cover
15.6.38Duplexing unit front side cover
15.6.39Duplexing unit rear side cover
15.6.40Reversed paper cooling fan (F11)
15.6.41ADU motor-1 (M7)
15.6.42ADU motor-2 (M8)
15.6.43ADU board
15.6.44ADU transport roller-1
15.6.45ADU transport roller-2
15.6.46ADU transport roller-3
15.6.47Duplexing unit path exit sensor (S67)
15.6.48Fuser transport sensor (S65)
15.6.49Duplexing unit path entrance sensor (S66)
15.6.50Duplexing unit cover opening/closing detection sensor (SW7)
15.6.51Duplexing unit interlock switch (SW4)

16.1 General Description
16.2 Functions
16.3 Description of Operation
16.3.1 Paper path
16.3.2 Drive
16.3.3 Original size detection
16.4 Electric Circuit Description
16.4.1 Signal block diagram
16.4.2 Electric circuit description
16.5 Disassembly and Replacement
16.5.1 RADF
16.5.2 RADF front cover
16.5.3 RADF rear cover
16.5.4 Original jam access cover
16.5.5 RADF left cover
16.5.6 Original tray
16.5.7 Original reverse tray
16.5.8 Platen sheet unit
16.5.9 RADF exit tray
16.5.10Reading start guide unit
16.5.11Exit guide / Exit/reverse guide / Reading end guide
16.5.12Paper feeder unit
16.5.13Pickup roller
16.5.14Feed roller
16.5.15Separation roller
16.5.16Original registration roller
16.5.17Intermediate transport roller
16.5.18Reading start roller
16.5.19Reading end roller
16.5.20Exit roller
16.5.21Exit/reverse roller
16.5.22Exit intermediate roller
16.5.23Reverse roller
16.5.24Original feed motor (MR1)
16.5.25Original feed motor bracket
16.5.26Read motor (MR2)
16.5.27Read motor bracket
16.5.28Original reverse motor (MR3)
16.5.29Original exit motor (MR4)
16.5.30RADF cooling fan (FR1)
16.5.31Original pickup solenoid (SOLR1)
16.5.32Original reverse solenoid (SOLR2)
16.5.33Original exit solenoid (SOLR3)
16.5.34Original jam access cover opening/closing switch (SWR1)
16.5.35RADF opening/closing switch (SWR2)
16.5.36RADF opening/closing sensor (SR15)
16.5.37Original empty sensor (SR3)
16.5.38Original jam access cover opening/closing sensor (SR13)
16.5.39Feeder lower guide unit
16.5.40Original width detection sensor-3 (SR8)
16.5.41Original width detection sensor-2 (SR7)
16.5.42Original width detection sensor-1 (SR6)
16.5.43Original registration sensor (SR5)
16.5.44Original exit sensor (SR12)
16.5.45Original tray sensor (SR1)
16.5.46Original tray width sensor (SR2)
16.5.47Original exit/reverse sensor (SR11)
16.5.48Original reverse unit opening/closing sensor (SR14)
16.5.49Original reading end sensor (SR4)
16.5.50Original intermediate transport sensor (SR9)
16.5.51Original reading start sensor (SR10)
16.5.52Original reading start sensor (prism)
16.5.53RADF board (RADF)
16.5.54RADF board bracket
16.5.55Harness guide
16.6 Adjustment of the Reversing Automatic Document Feeder (RADF)
16.6.1 RADF position adjustment
16.6.2 RADF height adjustment
16.6.3 RADF image skew adjustment
16.6.4 RADF leading edge position adjustment
16.6.5 RADF horizontal position adjustment
16.6.6 RADF copy ratio adjustment
16.6.7 RADF opening/closing switch adjustment
16.6.8 Original reading start sensor adjustment
16.6.9 Platen Sheet

17.1 Construction
17.2 Operation of DC Output Circuits
17.3 Output Channel
17.4 Fuse
17.5 Configuration of Power Supply Unit
17.6 Sequence of Power Supply
17.7 AC Wire Harness

18.1 General Description
18.2 PM Display
18.2.1 General Description
18.2.2 PM Display Conditions
18.2.3 PM Display Contents
18.2.4 Counter Clearing
18.3 General Descriptions for PM Procedure
18.4 PM Support Mode
18.4.1 General Description
18.4.2 Operational flow
18.4.3 Operational screen
18.4.4 Access tree
18.5 General Description
18.6 Preventive Maintenance Checklist
18.6.1 Scanner
18.6.2 Feed unit
18.6.3 Duplexing unit
18.6.4 Bypass feed unit
18.6.5 Main charger
18.6.6 Drum / Cleaner unit / Filter
18.6.7 Developer unit (K, Y, M, and C)
18.6.8 Waste toner box
18.6.9 Transfer belt unit / Transfer belt cleaning unit
18.6.10Image quality control unit
18.6.112nd transfer roller unit
18.6.12Fuser unit
18.6.13Bridge unit
18.6.14Paper exit unit
18.6.16LCF (PF-800)
18.7 Storage of Supplies and Replacement Parts
18.8 PM KIT
18.9 Maintenance Part List
18.10Grease List
18.11Operational Items in Overhauling

19.1 Firmware Updating with USB Media
19.1.1 Master data/System ROM/PFC ROM/Engine ROM/Scanner ROM
19.2 Firmware Updating with Special Download Jig
19.2.1 System ROM
19.2.2 Engine ROM
19.2.3 PFC ROM
19.3 Firmware Updating with PWB ASSY:K-PWA-DLM-320
19.3.1 Scanner ROM
19.3.2 RADF firmware
19.3.3 Finisher firmware (DF-800/810)
19.3.4 Saddle stitcher firmware (DF-810)
19.3.5 Hole punch unit firmware (PH-6A/B/C/D)
19.3.6 Converter Firmware (DF-800/810)
19.3.7 Fax unit firmware (FAX System(T))
19.4 Confirmation of the updated data
19.5 When Firmware Updating Fails
19.5.1 Procedure
19.5.2 Flow chart for correcting USB update failure

20.1 Removal and Installation of PC Boards/HDD
20.1.1 SYS board cover
20.1.2 SYS board (SYS)
20.1.3 SYS board case
20.1.4 SYS board cooling fan (F27)
20.1.5 IMG board (IMG)
20.1.6 LGC board cover
20.1.7 LGC board (LGC)
20.1.8 LGC board case
20.1.9 PFC board cover
20.1.10PFC board (PFC)
20.1.11PFC board case
20.1.12Hard disk (HDD)
20.1.13HDD cooling fan (F28)
20.1.14SRAM board (RAM-L)
20.1.15SRAM board (RAM-S)
20.1.16Switching regulator (PS)
20.1.17High-voltage transformer-1 (HVT1)
20.1.18High-voltage transformer-2 (HVT2)
20.1.19FIL board
20.2 Precautions, Procedures and Settings for Replacing PC Boards and HDD
20.2.1 Precautions when replacing PC boards
20.2.2 HDD fault diagnosis
20.2.3 Precautions and procedures when replacing the HDD
20.2.4 Precautions and Procedures when replacing the SYS board
20.2.5 Procedures and settings when replacing the SLG board
20.2.6 Precautions and Procedures when replacing SRAM board (for SYS board)
20.2.7 Precautions and Procedures when replacing SRAM board (for LGC board)
20.3 Precautions for Disposal of the HDD and PC Boards
20.3.1 Precautions when disposing of the HDD
20.3.2 Precautions when disposing of the SYS board
20.3.3 Precautions when disposing of the SRAM board

21.1 Data Cloning
21.1.1 General description
21.1.2 Precautions
21.1.3 Backup files
21.1.4 Cloning procedure
21.2 AES Data Encryption Function Setting
21.2.1 General description
21.2.2 Precautions
21.2.3 Setting procedure
21.2.4 Procedure for disabling data encryption function
21.2.5 Procedure for discarding HDD when data encryption function is enabled
21.3 Assist Mode
21.3.1 Assist Mode
21.3.2 Operating Procedure of Assist Mode

22.1 Input check (Test mode 03)
22.2 Output check (test mode 03)
22.3 Test print mode (test mode 04)
22.4 List Printing

23.1 Classification List of Adjustment Mode (05)
23.2 Operating Procedure
23.3 Test print pattern in Adjustment Mode (05)
23.4 Process
23.5 Image Processing
23.6 System
23.7 Scanner
23.8 Printer

24.1 Classification List of Setting Mode (08)
24.2 Operating Procedure
24.3 Process
24.4 Scanner
24.5 Printer
24.6 Counter
24.7 Image Processing
24.8 System
24.9 Pixel counter
24.9.1 Outline
24.9.2 Pixel counter related code
24.10PM support mode related code
24.11Default setting / restore setting of the EFI Printer Board
24.12S-ACS setting (08-9934)
24.12.2Switching operation and performance
24.12.3Printing status
24.12.5Precautions for setting

25.1 General Descriptions
25.2 Error Code List
25.2.1 Jam
25.2.2 Service call
25.2.3 Error in Internet FAX / Scanning Function
25.2.4 Printer function error
25.3 Diagnosis and Prescription for Each Error Code
25.3.1 Paper transport jam (paper exit section)
25.3.2 Paper misfeeding
25.3.3 Paper transport jam
25.3.4 Other paper jam
25.3.5 Cover open jam
25.3.6 RADF jam
25.3.7 Jam in bridge unit
25.3.8 Paper jam in finisher section
25.3.9 Paper jam in saddle stitcher section
25.3.10Paper jam in puncher unit
25.3.11Other paper jam
25.3.12Paper feeding system related service call
25.3.13Scanning system related service call
25.3.14Fuser unit related service call
25.3.15Communication related service call
25.3.16RADF related service call
25.3.17Circuit related service call
25.3.18Laser optical unit related service call
25.3.19Finisher related service call
25.3.20Image control related service call
25.3.21Copy process related service call
25.3.22Other service call
25.3.23Error in Internet FAX / Scanning Function
25.3.24Printer function error
25.4 Other errors
25.4.1 Drum surface potential sensor control related troubleshooting
25.4.2 Troubleshooting at unpacking
25.4.3 Drum surface potential sensor control related troubleshooting when setting up the equipment at unpacking
25.4.4 Equipment operation disabled after the installation of option(s)
25.4.5 Wireless LAN connection disabled
25.4.6 "Start page" printing disabled after the installation of the EFI Printer Board (GA-1310, optional)
25.4.7 When the duplexing unit cover open display cannot be released
25.4.8 Troubleshooting for one-time dongle
25.5 Troubleshooting for the Image
25.5.1 Color deviation
25.5.2 Uneven pitch and jitter image
25.5.3 Black spot / color point
25.5.4 Poor image density, color reproduction and gray balance
25.5.5 Background fogging
25.5.6 Moire/lack of sharpness
25.5.7 Toner offset
25.5.8 Blurred image
25.5.9 Poor fusing
25.5.10Blank print
25.5.11Solid print
25.5.12White banding (in feeding direction)
25.5.13White banding (at right angles to feeding direction)
25.5.14Skew (slantwise copying)
25.5.15Color banding (in feeding direction)
25.5.16Color banding (at right angles to feeding direction)
25.5.17White spots
25.5.18Poor transfer
25.5.19Uneven image density
25.5.20Faded image (low density)
25.5.21Image dislocation in feeding direction
25.5.22Image jittering
25.5.23Poor cleaning
25.5.24Uneven light distribution
25.5.25Blotched image
25.5.26Stain on the paper back side
25.5.27White void in the halftone
25.5.28Paper wrinkle
25.5.29Residual image
25.5.30Feathered image - 1
25.5.31Feathered image - 2

26.1 Auto Supply Order
26.1.1 Outline
26.1.2 Setting Item
26.1.3 Setting procedure
26.1.4 Order Sheet Format
26.2 Service Notification
26.2.1 Outline
26.2.2 Setting
26.2.3 Items to be notified

27.1 Removal and Installation of Options
27.1.1 PF-800 (Large Capacity Feeder (LCF))
27.1.2 DF-800/810 (Finisher)
27.1.3 PH-6A/B/C/D (Hole punch unit)
27.2 Adjustment of the Finisher (DF-800/810)
27.2.1 Adjusting the Alignment Position
27.2.2 Adjusting the Stapling Position
27.2.3 Stapling/folding position adjustment in saddle unit

28.1 Outline
28.2 Signal
28.3 Notices


Number of pages: 1546.
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