Toshiba e-STUDIO 5540C e-STUDIO 6540C e-STUDIO 6550C e-STUDIO 5560C e-STUDIO 6560C e-STUDIO 6570C Service Manual (Version 09 F, 2015 January)

Service Manual Toshiba e-STUDIO 5540C e-STUDIO 6540C e-STUDIO 6550C e-STUDIO 5560C e-STUDIO 6560C e-STUDIO 6570C (Version 09 F, 2015 January);
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To see what contain, please read table of contents:

1. FEATURE
1.1 Main Feature of e-STUDIO5540C/6540C/6550C
1.2 Main Feature of e-STUDIO5560C/6560C/6570C

2. SPECIFICATIONS/ACCESSORIES/OPTIONS/SUPPLIES
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 System List (e-STUDIO5540C/6540C/6550C)
2.4 System List (e-STUDIO5560C/6560C/6570C)
2.5 Supplies

3. OUTLINE OF THE MACHINE
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 Copy Process
3.5 Comparison with e-STUDIO5520C/6520C/6530C
3.6 Comparison with e-STUDIO5540C/6540C/6550C
3.7 General Operation
3.7.1 Overview of Operation
3.7.2 Description of Operation
3.7.3 Detection of Abnormality
3.7.4 Hibernation function
3.8 Control Panel
3.8.1 General Description
3.8.2 Description of Operation
3.9 Scanner
3.9.1 General Description
3.9.2 Construction
3.9.3 Functions
3.9.4 Description of Operation
3.9.5 Principle of original size detection
3.10 Laser Optical Unit
3.10.1 General Description
3.10.2 Laser precautions
3.10.3 Slit glass cleaning mechanism
3.11 Paper Feeding System
3.11.1 General Descriptions
3.11.2 Composition
3.11.3 Functions
3.11.4 Description of Operation
3.12 Process Unit Related Section
3.12.1 General description
3.12.2 Composition
3.12.3 Functions
3.12.4 Electric Circuit Description
3.13 Transfer unit
3.13.1 General Descriptions
3.13.2 Composition
3.13.3 Self steering mechanism
3.14 Image Quality Control
3.14.1 General Description
3.15 Fuser Unit
3.15.1 General Description
3.15.2 Composition
3.15.3 Electric Circuit Description
3.16 Exit / Reverse / Duplex Section
3.16.1 General Description
3.16.2 Composition
3.16.3 Description of Operations
3.17 Reversing Automatic Document Feeder (RADF)
3.17.1 General Description
3.17.2 Functions
3.17.3 Description of Operation
3.18 Power Supply Unit
3.18.1 General Description
3.18.2 Composition
3.18.3 Operation of DC Output Circuits
3.18.4 Output Channel
3.18.5 Fuse

4. DISASSEMBLY and REPLACEMENT
4.1 Disassembly and Replacement of Covers
4.1.1 Front lower cover
4.1.2 Front cover
4.1.3 Top right cover
4.1.4 Right top cover
4.1.5 Top front cover
4.1.6 Top left cover
4.1.7 FAX cover
4.1.8 Receiving tray
4.1.9 Left middle cover
4.1.10 Left top cover
4.1.11 Left lower cover
4.1.12 Bypass tray unit (Removing tray arm)
4.1.13 Duplexing unit front cover
4.1.14 Duplexing unit rear cover
4.1.15 Paper feed cover
4.1.16 RADF connector cover
4.1.17 Right rear cover
4.1.18 Rear cover
4.1.19 Upper exhaust fan cover
4.1.20 Top rear cover
4.1.21 Left corner cover
4.1.22 Right corner cover
4.2 Control Panel
4.2.1 Control panel unit
4.2.2 Control panel rear cover
4.2.3 Display PC board (DSP)
4.2.4 Shielding plate
4.2.5 Key PC board-1 (KEY1)
4.2.6 Key PC board-2 (KEY2)
4.2.7 Touch panel (TCP)
4.2.8 Control panel cover
4.3 Scanner
4.3.1 Original glass
4.3.2 Lens cover
4.3.3 SLG board cooling fan (F1)
4.3.4 Automatic original detection sensor <APS sensor> (S1-5)
4.3.5 Exposure lamp (EXP)
4.3.6 Exposure lamp cooling fan-1 (F2)
4.3.7 Scanner unit cooling fan-1 (F3)
4.3.8 Exposure lamp cooling fan-2 (F26)
4.3.9 Upper exhaust fan (left) (F29)
4.3.10 Upper exhaust fan (right) (F30)
4.3.11 Lens unit
4.3.12 Scan motor (M1)
4.3.13 Carriage-1
4.3.14 Inverter board (INV)
4.3.15 Carriage wire / carriage-2
4.3.16 Carriage home position sensor (S6)
4.3.17 Platen sensor (S7)
4.3.18 SLG board (SLG)
4.4 Laser Optical Unit
4.4.1 Laser optical unit
4.4.2 Laser optical unit cooling fan (front) (F22)
4.4.3 Laser optical unit cooling fan (rear) (F23)
4.4.4 Shutter
4.4.5 Shutter motor
4.4.6 Shutter sensor (home position)
4.4.7 Shutter sensor (end position)
4.4.8 Disassembly and replacement of the Polygonal motor
4.5 Paper Feeding System
4.5.1 Bypass feed tray
4.5.2 Bypass feed unit
4.5.3 Bypass pickup solenoid (SOL8)
4.5.4 Bypass paper sensor (S71)
4.5.5 Bypass pickup roller
4.5.6 Bypass upper unit
4.5.7 Bypass feed roller
4.5.8 Bypass transport roller
4.5.9 Bypass motor(M12)
4.5.10 1st drawer idling roller
4.5.11 Bypass separation roller
4.5.12 Bypass feed sensor (S72)
4.5.13 Bypass paper size detection sensor (S70)
4.5.14 Drawer feeding unit
4.5.15 Feed roller
4.5.16 Pickup roller
4.5.17 Separation roller
4.5.18 Transport roller
4.5.19 Drawer detection sensor (S73/S81/S89/S97)
4.5.20 Drawer feed sensor (S78/S86/S94/S102)
4.5.21 Drawer transport sensor (S77/S85/S93/S101)
4.5.22 Drawer empty sensor (S75/S83/S91/S99)
4.5.23 Drawer tray-up sensor (S76/S84/S92/S100)
4.5.24 Drawer bottom sensor (S74/S82/S90/S98)
4.5.25 Registration roller (Rubber)
4.5.26 Paper dust cleaning brush (registration roller)
4.5.27 Registration guide
4.5.28 Registration sensor (S52)
4.5.29 Registration roller (Metal)
4.5.30 2nd transfer side paper clinging detection sensor (S51)
4.5.31 Media sensor (S69)
4.5.32 Feed cover sensor (S114)
4.5.33 Drawer
4.5.34 Drawer paper size detection sensor-1/2
(S79/S80/S87/S88/S95/S96/S103/S104)
4.5.35 Registration motor (M39)
4.5.36 Feed/transport drive unit
4.5.37 Transport motor-1 (M40)
4.5.38 Transport motor-2 (M41)
4.5.39 Feed motor (M42)
4.5.40 Feed/transport motor (M43)
4.5.41 Paper feed drive unit
4.5.42 3rd drawer transport clutch (CLT4)/3rd drawer feed clutch (CLT5)
(e-STUDIO5540C/6540C/6550C)
4.5.43 3rd drawer transport clutch (CLT4)/3rd drawer feed clutch (CLT5)
(e-STUDIO5560C/6560C/6570C)
4.5.44 4th drawer transport clutch (CLT6)/4th drawer feed clutch (CLT7)
(e-STUDIO5540C/6540C/6550C)
4.5.45 4th drawer transport clutch (CLT6)/4th drawer feed clutch (CLT7)
(e-STUDIO5560C/6560C/6570C)
4.5.46 Tray-up motor-1 (M44)
4.5.47 Tray-up motor-2 (M45)
4.5.48 Transfer belt paper clinging detection sensor (S47)
4.5.49 Tandem LCF tray-up motor (M46)
4.5.50 Tandem LCF end fence motor (M47)
4.5.51 Tandem LCF standby unit
4.5.52 Tandem LCF feeding unit
4.5.53 Stopper opening/closing solenoid (front) (SOL10)/Stopper opening/closing
detection sensor (front) (S110)
4.5.54 Stopper opening/closing solenoid (rear)/Stopper opening/closing detection
sensor (rear) (S111)
4.5.55 Tandem LCF bottom sensor (S107)
4.5.56 Standby side tray paper amount detection sensor (S106)
4.5.57 End fence home position sensor (S112)
4.5.58 End fence stop position sensor (S113)
4.5.59 Standby side empty sensor (S109)
4.5.60 Standby side tray detection sensor (S108)
4.5.61 Tandem LCF solenoid (SOL9)
4.6 Process Unit Related Section
4.6.1 Pulling out the process unit (EPU tray)
4.6.2 Drum cleaner unit
4.6.3 Drum
4.6.4 Drum cleaning blade
4.6.5 Blade side seal
4.6.6 Main charger unit
4.6.7 Main charger grid
4.6.8 Needle electrode cleaner
4.6.9 Needle electrode
4.6.10 Discharge LED (ERS-K/ERS-C/ERS-M/ERS-Y)
4.6.11 Sub-hopper
4.6.12 Sub-hopper toner sensor (S38/S39/S40/S41)
4.6.13 EPU cover
4.6.14 Sub-hopper toner motor (K/C/M/Y) (M19/M20/M21/M22)
4.6.15 EPU PC board
4.6.16 Drum surface potential sensors control PC board (V0S board)
(e-STUDIO6550C/6570C only)
4.6.17 Auger lock detection sensor (S42)
4.6.18 Main charger ozone exhaust fan-K/-C/-M/-Y (F17/F1/F19/F20)
4.6.19 Needle electrode cleaner detection sensor-K/C/M/Y (S30/S31/S32/S33)
4.6.20 Needle electrode cleaner motor-K/-C/-M/-Y (M23/M24/M25/M26)
4.6.21 V0 sensor shutter solenoid (K) (SOL) (e-STUDIO6550C/6570C only)
4.6.22 Drum surface potential sensor (K) (S34) (e-STUDIO6550C/6570C only)
4.6.23 Drum thermistor (K/Y) (THM1/THM2)
4.6.24 Developer unit
4.6.25 Developer material
4.6.26 Developer sleeve
4.6.27 Doctor blade
4.6.28 Auto-toner sensor-K/C/M/Y (S26/S27/S28/S29)
4.6.29 Drum drive unit
4.6.30 Drum motor-K (M27)
4.6.31 Drum motor-YMC (M28)
4.6.32 K drum phase sensor (S44)
4.6.33 Color drum phase sensor (S43)
4.6.34 Developer unit motor-K/YMC (M29)/(M31)
4.6.35 Developer unit mixer motor-K/YMC (M30)/(M32)
4.6.36 Developer drive unit
4.6.37 Waste toner box
4.6.38 Waste toner amount detection sensor (S13)
4.6.39 Waste toner box full detection sensor (S14)
4.6.40 Waste toner box detection sensor (S16)
4.6.41 Ozone filter-1
4.6.42 Ozone filter-2
4.6.43 Toner filter
4.6.44 Toner motor (K/C/M/Y) (M15/M16/M17/M18)
4.6.45 Toner cartridge paddle rotation detection sensor-K/C/M/Y (S8/S9/S10/S11) 4-130
4.6.46 Waste toner transport motor (M33)
4.6.47 Waste toner transport unit
4.6.48 Ozone suctioning fan (F24)
4.6.49 Toner cartridge heat insulation fan (F21)
4.6.50 Toner cooling exhaust fan (F31)
4.6.51 Temperature/humidity sensor (S12)
4.6.52 Toner motor interlock switch (SW3)
4.6.53 EPU cooling fan (F14)
4.6.54 Scattered toner suctioning fan (F25)
4.7 Transfer Unit
4.7.1 Pulling out the transfer belt unit
4.7.2 2nd transfer facing roller cleaning pad
4.7.3 Transfer belt cleaning unit
4.7.4 Transfer belt cleaning blade
4.7.5 Transfer belt cleaner side seal
4.7.6 Transfer belt unit (TBU)
4.7.7 Transfer belt
4.7.8 Transfer belt cam motor (M14)
4.7.9 Transfer belt contact/release detection sensor (S46)
4.7.10 1st transfer roller (Y/M/C/K)
4.7.11 Cleanable facing roller
4.7.12 Tension roller
4.7.13 2nd transfer facing roller
4.7.14 2nd transfer unit (TRU)
4.7.15 2nd transfer roller
4.7.16 2nd transfer roller lubricant unit
4.7.17 2nd transfer roller cleaning blade
4.7.18 2nd transfer roller side seal
4.7.19 TRU waste toner box
4.7.20 TRU waste toner amount detection sensor (S17)
4.7.21 TRU waste toner auger drive section
4.7.22 TRU waste toner transport motor (M11)
4.7.23 TRU waste toner motor (M10)
4.7.24 Transfer belt motor (M13)
4.7.25 2nd transfer roller contact/release detection sensor (S50)
4.7.26 2nd transfer cam motor (M48)
4.7.27 2nd transfer cam drive unit
4.8 Image Quality Control
4.8.1 Image quality control unit
4.8.2 Image position aligning sensor (front) (S20)
4.8.3 Image position aligning sensor (center) (S21)
4.8.4 Image position aligning sensor (rear) (S22)
4.8.5 Image quality sensor (S23)
4.8.6 Image quality shutter solenoid (SOL3)
4.9 Fuser Unit
4.9.1 Fuser unit
4.9.2 Pressure roller cover
4.9.3 Transport guide-1
4.9.4 Transport guide-2
4.9.5 Entrance guide cover
4.9.6 Separation finger
4.9.7 Separation plate
4.9.8 Pressure roller / Pressure roller heater lamp (LAMP)
4.9.9 Fuser belt / Fuser roller / Fuser belt guide / Heat pipe roller
4.9.10 Fuser belt rotation detection sensor (S49)
4.9.11 Fuser belt thermostat (THMO4)
4.9.12 Fuser belt edge thermistor (THM6)
4.9.13 Pressure roller center thermistor (THM3) / Pressure roller side thermistor
(THM4) / Pressure roller edge thermistor (THM5)
4.9.14 Pressure roller contact/release sensor (S48)
4.9.15 Pressure roller center thermostat (THMO2) / Pressure roller side thermostat
(THMO3)
4.9.16 IH coil
4.9.17 Fuser belt thermopile (THMP1)
4.9.18 Fuser motor (M6)
4.9.19 Pressure roller contact/release clutch (CLT1)
4.9.20 Exit paper cooling fan (rear) (F15)
4.9.21 IH cooling fan-1 (F8) / IH cooling fan-2 (F9)
4.9.22 IH board (IH)
4.9.23 Fuser unit jam releasing LED (LED)
4.9.24 VOC filter 1
4.9.25 VOC filter 2
4.10 Exit / Reverse / Duplex Section
4.10.1 Upper exit section cooling fan-1(F32) /
Upper exit section cooling fan-2 (F33)
4.10.2 Lower exit section cooling fan-1(F34) /
Lower exit section cooling fan-2 (F35)
4.10.3 Lower exit section cooling fan-3(F36)
4.10.4 Exit motor (M2)
4.10.5 Upper paper exit sensor (S61) /
Upper exit tray paper full detection sensor (S62)
4.10.6 Lower paper exit sensor (S63)
4.10.7 Reverse section stationary jam detection sensor (S60)
4.10.8 Reverse path cover switch (SW5)
4.10.9 Upper paper exit roller
4.10.10 Lower paper exit roller
4.10.11 Bridge unit
4.10.12 Bridge unit front cover
4.10.13 Bridge unit lower cover
4.10.14 Bridge unit transport entrance motor (M4) / Reverse motor (M3)
4.10.15 Bridge unit transport exit motor (M5)
4.10.16 Bridge unit upper cover
4.10.17 Bridge unit transport roller-1
4.10.18 Bridge unit transport roller-2
4.10.19 Bridge unit transport roller-3
4.10.20 Reverse roller
4.10.21 Bridge unit exit roller-1
4.10.22 Bridge unit exit roller-2
4.10.23 Transport path switching solenoid-1 (SOL1)
4.10.24 Transport path switching solenoid-2 (SOL2)
4.10.25 Bridge unit path entrance sensor (S55)
4.10.26 Bridge unit path exit sensor (S56)
4.10.27 Reverse sensor (S59)
4.10.28 Reverse section stationary jam detection sensor (S58)
4.10.29 Exit paper cooling fan (front) (F5)
4.10.30 Bridge unit cooling fan (front) (F6)
4.10.31 Bridge unit cooling fan (rear) (F7)
4.10.32 Front cover opening/closing detection switch (SW9) / Bridge unit connecting
detection switch (SW8)
4.10.33 Duplexing bridge unit
4.10.34 Duplexing unit opening/closing detection sensor (S64)
4.10.35 Reverse path sensor (S57)
4.10.36 Duplexing bridge unit transport roller
4.10.37 Duplexing unit upper cover
4.10.38 Duplexing unit front side cover
4.10.39 Duplexing unit rear side cover
4.10.40 Reversed paper cooling fan (F11)
4.10.41 ADU motor-1 (M7)
4.10.42 ADU motor-2 (M8)
4.10.43 ADU board (ADU)
4.10.44 ADU transport roller-1
4.10.45 ADU transport roller-2
4.10.46 ADU transport roller-3
4.10.47 Duplexing unit path exit sensor (S67)
4.10.48 Fuser transport sensor (S65)
4.10.49 Duplexing unit path entrance sensor (S66)
4.10.50 Duplexing unit cover opening/closing detection switch (SW7)
4.10.51 Duplexing unit interlock switch (SW4)
4.10.52 Interlock switch (SW2)
4.11 Reversing Automatic Document Feeder (RADF)
4.11.1 RADF
4.11.2 RADF front cover
4.11.3 RADF rear cover
4.11.4 Original jam access cover
4.11.5 RADF left cover
4.11.6 Original tray
4.11.7 Original reverse tray
4.11.8 Platen sheet unit
4.11.9 RADF exit tray
4.11.10 Reading start guide unit
4.11.11 Exit guide / Exit/reverse guide / Reading end guide
4.11.12 Paper feeder unit
4.11.13 Pickup roller
4.11.14 Feed roller
4.11.15 Separation roller
4.11.16 Original registration roller
4.11.17 Intermediate transport roller
4.11.18 Reading start roller
4.11.19 Reading end roller
4.11.20 Exit roller
4.11.21 Exit/reverse roller
4.11.22 Exit intermediate roller
4.11.23 Reverse roller
4.11.24 Original feed motor (MR1)
4.11.25 Original feed motor bracket
4.11.26 Read motor (MR2)
4.11.27 Read motor bracket
4.11.28 Original reverse motor (MR3)
4.11.29 Original exit motor (MR4)
4.11.30 RADF cooling fan (FR1)
4.11.31 Original pickup solenoid (SOLR1)
4.11.32 Original reverse solenoid (SOLR2)
4.11.33 Original exit solenoid (SOLR3)
4.11.34 Original jam access cover opening/closing switch (SWR1)
4.11.35 RADF opening/closing switch (SWR2)
4.11.36 RADF opening/closing sensor (SR15)
4.11.37 Original empty sensor (SR3)
4.11.38 Original jam access cover opening/closing sensor (SR13)
4.11.39 Feeder lower guide unit
4.11.40 Original width detection sensor-3 (SR8)
4.11.41 Original width detection sensor-2 (SR7)
4.11.42 Original width detection sensor-1 (SR6)
4.11.43 Original registration sensor (SR5)
4.11.44 Original exit sensor (SR12)
4.11.45 Original tray sensor (SR1)
4.11.46 Original tray width sensor (SR2)
4.11.47 Original exit/reverse sensor (SR11)
4.11.48 Original reverse unit opening/closing sensor (SR14)
4.11.49 Original reading end sensor (SR4)
4.11.50 Original intermediate transport sensor (SR9)
4.11.51 Original reading start sensor (SR10)
4.11.52 Original reading start sensor (prism)
4.11.53 RADF board (RADF)
4.11.54 RADF board bracket
4.11.55 Harness guide
4.12 Removal and Installation of Options
4.12.1 MP-2501L/A (Large Capacity Feeder (LCF))
4.12.2 MJ-1103/1104 (Finisher)
4.12.3 MJ-6102 (Hole punch unit)

5. SELF-DIAGNOSTIC MODE
5.1 Overview
5.2 Service UI
5.2.1 Overview
5.2.2 Login procedure
5.2.3 [SERVICE MODE] Screen
5.2.4 Setting/Changing password
5.3 Input check (Test mode 03)
5.4 Output check (test mode 03)
5.5 Test print mode (test mode 04)
5.6 Operation Procedure in Adjustment Mode (05)
5.7 Test print pattern in Adjustment Mode (05)
5.8 Operation Procedure in Setting Mode (08)
5.9 Assist Mode (3C)
5.9.1 Assist Mode
5.9.2 Operating Procedure
5.10 HDD Assist Mode (4C)
5.10.1 General description
5.10.2 Operation procedure
5.10.3 Functions
5.11 File System Recovery Mode (5C)
5.11.1 Overview
5.11.2 Operation procedure
5.11.3 Functions
5.12 SRAM Clear Mode (6C)
5.12.1 General description
5.12.2 Operation procedure
5.12.3 Functions
5.13 List print mode (9S)
5.13.1 Operation procedure
5.13.2 List Printing
5.14 Pixel counter
5.14.1 Outline
5.15 Default setting / restore setting of the EFI Printer Board

6. SETTING ADJUSTMENT
6.1 Image Related Adjustment
6.1.1 Adjustment Order
6.1.2 Adjustment of the Auto-Toner Sensor
6.1.3 Performing Image Quality Control
6.1.4 Adjustment of Color Registration Control
6.1.5 Image Dimensional Adjustment (General description)
6.1.6 Paper alignment at the registration roller
6.1.7 Printer-related image dimensional adjustment
6.1.8 Scanner-related image dimensional adjustment
6.2 Image Quality Adjustment (Copying Function)
6.2.1 Automatic gamma adjustment
6.2.2 Density adjustment
6.2.3 Color balance adjustment
6.2.4 Gamma balance adjustment
6.2.5 Background adjustment
6.2.6 Judgment threshold for ACS (common for copy and scan)
6.2.7 Sharpness adjustment
6.2.8 Setting range correction
6.2.9 Adjustment of smudged/faint text
6.2.10 Color Adjustment of Marker
6.2.11 Beam level conversion setting
6.2.12 Maximum toner density adjustment to paper type
6.2.13 Maximum text density adjustment
6.2.14 Text/Photo reproduction level adjustment
6.2.15 Black header density level adjustment
6.2.16 Black area adjustment in twin color copy mode
6.2.17 Judgment threshold adjustment for blank original
6.2.18 Background offsetting adjustment for RADF
6.2.19 Twin color copy / mono color copy adjustment
6.2.20 Maximum density adjustment for each paper type
6.2.21 ADF noise reduction (Copying Function)
6.3 Image Quality Adjustment (Printing Function)
6.3.1 Automatic gamma adjustment
6.3.2 Gamma balance adjustment (Black Mode)
6.3.3 Color balance adjustment
6.3.4 Adjustment of faint text
6.3.5 Upper limit value at Toner Saving Mode
6.3.6 Maximum toner density adjustment (OHP)
6.3.7 Fine line enhancement switchover
6.3.8 “PureBlack/PureGray” threshold adjustment (PS)
6.3.9 “PureBlack/PureGray” threshold adjustment (PCL)
6.3.10 “PureBlack/PureGray” threshold adjustment (XPS)
6.3.11 “PureBlack/PureGray” threshold adjustment (Twin color print)
6.3.12 Toner limit threshold adjustment
6.3.13 Screen switchover
6.3.14 Sharpness adjustment
6.3.15 Adjustment of smudged text (1200 dpi)
6.3.16 Thin line width lower limit adjustment
6.3.17 Color/black judgment setting for twin color printing images
6.3.18 Background adjustment
6.3.19 Density adjustment of graphic lines (1200 dpi)
6.3.20 Beam level conversion setting
6.4 Image Quality Adjustment (Scanning Function)
6.4.1 Gamma balance adjustment
6.4.2 Density adjustment
6.4.3 Background adjustment (Color Mode)
6.4.4 Judgment threshold for ACS (common for copy & scan)
6.4.5 Sharpness adjustment
6.4.6 Setting range correction
6.4.7 Fine adjustment of black density
6.4.8 RGB conversion method selection
6.4.9 Adjustment of saturation
6.4.10 Background processing offset adjustment
6.4.11 Adjustment of the capacity and image quality of SlimPDF
6.4.12 Surrounding void amount adjustment
6.4.13 ADF noise reduction (Scanning Function)
6.5 Image Quality Adjustment (FAX Function)
6.5.1 Density adjustment
6.5.2 Beam level conversion setting
6.6 Scanner
6.6.1 Adjustment carriages-1 and -2 positions
6.6.2 Belt tension adjustment of the Scan motor
6.7 Paper Feeding System
6.7.1 Adjustment of the media sensor position
6.7.2 Separation roller pressure force adjustment
6.7.3 Sheet sideways deviation caused by paper transporting adjustment
6.7.4 Adjusting the clearance of the paper and side guides
6.8 Process Unit Related Section
6.8.1 High-Voltage Transformer Setting
6.8.2 Adjustment of the Auto-Toner Sensor
6.8.3 Adjustment of the doctor-sleeve gap
6.9 Transfer Unit
6.9.1 Adjustment of the degree of the transfer belt unit parallelization
6.10 Image Quality Control
6.10.1 Performing Image Quality Control
6.11 Fuser Unit
6.11.1 Gap adjustment for fuser belt thermostats
6.11.2 Gap adjustment for pressure roller thermistors
6.11.3 Gap adjustment for pressure roller thermostats
6.11.4 Gap adjustment for separation plate
6.12 Reversing Automatic Document Feeder (RADF)
6.12.1 RADF position adjustment
6.12.2 RADF height adjustment
6.12.3 RADF image skew adjustment
6.12.4 RADF leading edge position adjustment
6.12.5 RADF horizontal position adjustment
6.12.6 RADF copy ratio adjustment
6.12.7 RADF opening/closing switch adjustment
6.12.8 Original reading start sensor adjustment
6.12.9 Platen Sheet

7. PREVENTIVE MAINTENANCE (PM)
7.1 General Description
7.2 PM Display
7.2.1 General Description
7.2.2 PM Display Conditions
7.2.3 PM Display Contents
7.2.4 Counter Clearing
7.3 General Descriptions for PM Procedure
7.4 PM Support Mode
7.4.1 General Description
7.4.2 Operational flow
7.4.3 Operational screen
7.4.4 Access tree
7.5 General Description
7.6 Preventive Maintenance Checklist (e-STUDIO5540C/6540C/6550C)
7.6.1 Scanner
7.6.2 Feed unit
7.6.3 Duplexing unit
7.6.4 Bypass feed unit
7.6.5 Main charger
7.6.6 Drum / Cleaner unit / Filter
7.6.7 Developer unit (K, Y, M, and C)
7.6.8 Waste toner box
7.6.9 Transfer belt unit / Transfer belt cleaning unit
7.6.10 Image quality control unit
7.6.11 2nd transfer roller unit
7.6.12 Fuser unit
7.6.13 Bridge unit
7.6.14 Paper exit unit
7.6.15 RADF
7.6.16 LCF (MP-2501)
7.7 Preventive Maintenance Checklist (e-STUDIO5560C/6560C/6570C)
7.7.1 Scanner
7.7.2 Feed unit
7.7.3 Duplexing unit
7.7.4 Bypass feed unit
7.7.5 Main charger
7.7.6 Drum / Cleaner unit / Filter
7.7.7 Developer unit (K, Y, M, and C)
7.7.8 Waste toner box
7.7.9 Transfer belt unit / Transfer belt cleaning unit
7.7.10 Image quality control unit
7.7.11 2nd transfer roller unit
7.7.12 Fuser unit
7.7.13 Bridge unit
7.7.14 Paper exit unit
7.7.15 RADF
7.7.16 LCF (MP-2501)
7.8 Storage of Supplies and Replacement Parts
7.9 PM KIT
7.10 Maintenance Part List
7.11 Grease List
7.12 Operational Items in Overhauling (e-STUDIO5540C/6540C/6550C only)
7.13 Machine Refreshing Checklist (e-STUDIO5560C/6560C/6570C only)

8. ERROR CODE and TROUBLESHOOTING
8.1 General Descriptions
8.1.1 If a problem continues even after performing all troubleshooting
8.1.2 Collection of debug logs with a USB device
8.2 Error Code List
8.2.1 Jam
8.2.2 Service call
8.2.3 Error in Internet FAX / Scanning Function
8.2.4 Printer function error
8.2.5 TopAccess related error/Communication error with external application
8.2.6 MFP access error
8.2.7 Maintenance error
8.2.8 Network error
8.2.9 Error history
8.3 Diagnosis and Prescription for Each Error Code
8.3.1 Check item
8.3.2 Paper transport jam (paper exit section)
8.3.3 Paper misfeeding
8.3.4 Paper transport jam
8.3.5 Other paper jam
8.3.6 Cover open jam
8.3.7 RADF jam
8.3.8 Jam in bridge unit
8.3.9 Paper jam in finisher section
8.3.10 Paper jam in saddle stitcher section
8.3.11 Paper jam in puncher unit
8.3.12 Other paper jam
8.3.13 Paper feeding system related service call
8.3.14 Scanning system related service call
8.3.15 Fuser unit related service call
8.3.16 Communication related service call
8.3.17 RADF related service call
8.3.18 Circuit related service call
8.3.19 Laser optical unit related service call
8.3.20 Finisher related service call
8.3.21 Image control related service call
8.3.22 Copy process related service call
8.3.23 Other service call
8.3.24 Error in Internet FAX / Scanning Function
8.3.25 Printer function error
8.3.26 TopAccess related error/Communication error with external application
8.3.27 MFP access error
8.3.28 Maintenance error
8.3.29 Network error
8.4 Other errors
8.4.1 Drum surface potential sensor control related troubleshooting
8.4.2 Troubleshooting at unpacking
8.4.3 Drum surface potential sensor control related troubleshooting when setting up
the equipment at unpacking (e-STUDIO6550C/6570C only)
8.4.4 Equipment operation disabled after the installation of option(s)
8.4.5 Wireless LAN connection disabled
8.4.6 “Start page” printing disabled after the installation of the EFI Printer Board
(GA-1310, optional)
8.4.7 When the duplexing unit cover open display cannot be released
8.4.8 Operation of the control panel locked at the power-ON and the locking cannot
be canceled
8.4.9 Troubleshooting for one-time dongle
8.4.10 Countermeasure for stain on paper back side
8.4.11 Measures against exit paper side deviation
8.4.12 Troubleshooting for abnormal sound from fuser unit
8.4.13 “Authentication Failed” is displayed
8.4.14 Hard disk full error “H04” is displayed
8.4.15 When the First copy time / First print output time (for black) in the MFP with 55
cpm exceeds approx. 5.3 sec
8.4.16 Error code “M00” is displayed while updating firmware
8.5 Troubleshooting for the Image
8.5.1 Color deviation
8.5.2 Uneven pitch and jitter image
8.5.3 Black spot / color point
8.5.4 Poor image density, color reproduction and gray balance
8.5.5 Background fogging
8.5.6 Moire/lack of sharpness
8.5.7 Toner offset
8.5.8 Blurred image
8.5.9 Poor fusing
8.5.10 Blank print
8.5.11 Solid print
8.5.12 White banding or white void (in feeding direction)
8.5.13 White banding (at right angles to feeding direction)
8.5.14 Skew (slantwise copying)
8.5.15 Color banding (in feeding direction)
8.5.16 Color banding (at right angles to feeding direction)
8.5.17 White spots
8.5.18 Poor transfer
8.5.19 Uneven image density 1
8.5.20 Uneven image density 2
8.5.21 Faded image (low density)
8.5.22 Image dislocation in feeding direction
8.5.23 Image jittering
8.5.24 Poor cleaning
8.5.25 Uneven light distribution
8.5.26 Blotched image
8.5.27 Stain on the paper back side
8.5.28 White void in the halftone
8.5.29 Paper wrinkle
8.5.30 Residual image
8.5.31 Feathered image
8.5.32 Low density image (rear side)
8.5.33 Roughness
8.5.34 Image tilting on leading edge

9. REPLACEMENT OF PC BOARDS/HDD
9.1 Removal and Installation of PC Boards/HDD
9.1.1 SYS board cover
9.1.2 SYS board (SYS)
9.1.3 SYS board case
9.1.4 SYS board cooling fan (F27)
9.1.5 IMG board (IMG)
9.1.6 LGC board (LGC)
9.1.7 LGC board case
9.1.8 PFC board (PFC)
9.1.9 PFC board case
9.1.10 Hard disk (HDD) (e-STUDIO5540C/6540C/6550C)
9.1.11 Hard disk (HDD) (e-STUDIO5560C/6560C/6570C)
9.1.12 HDD cooling fan (F28) (e-STUDIO5540C/6540C/6550C only)
9.1.13 SRAM board <for LGC board> (RAM-L)
9.1.14 SRAM board <for SYS board> (RAM-S)
9.1.15 Switching regulator (PS)
9.1.16 High-voltage transformer-1 (HVT1)
9.1.17 High-voltage transformer-2 (HVT2)
9.1.18 FIL board
9.2 Precautions, Procedures and Settings for Replacing PC Boards and HDD
9.2.1 Precautions when replacing PC boards
9.2.2 HDD fault diagnosis
9.2.3 Precautions and procedures when replacing the HDD
9.2.4 Precautions and Procedures when replacing the SYS board
9.2.5 Procedures and settings when replacing the SLG board
9.2.6 Precautions and Procedures when replacing SRAM board (for SYS board)
9.2.7 Precautions and Procedures when replacing SRAM board (for LGC board)
9.2.8 Firmware confirmation after the PC board/HDD replacement
9.2.9 License re-registration using the one-time dongle
9.3 Precautions for Installation of GP-1070 and Disposal of HDD/Board
9.3.1 Precautions for Installation of GP-1070
9.3.2 Precautions when disposing of the HDD
9.3.3 Precautions when disposing of the SYS board
9.3.4 Precautions when disposing of the SRAM board (for SYS board)
9.3.5 Precautions when disposing of the SRAM board (for LGC board)

10. REMOTE SERVICE
10.1 Auto Supply Order
10.1.1 Outline
10.1.2 Setting Item
10.1.3 Setting procedure
10.1.4 Order Sheet Format
10.2 Service Notification
10.2.1 Outline
10.2.2 Setting
10.2.3 Items to be notified

11. FIRMWARE UPDATING
11.1 Firmware Updating with USB Media
11.1.1 Firmware type and data file name for updating
11.1.2 Master data/System ROM/PFC ROM/Engine ROM/Scanner ROM /
RADF ROM
11.2 Patch Updating with USB Media
11.2.1 Firmware type and data file name for patch updating
11.2.2 Master data/System ROM
11.3 Firmware Updating with PWA-DWNLD-350-JIG1
11.3.1 Writing the data to the download jig (PWA-DWNLD-350-JIG1)
11.3.2 System ROM
11.3.3 Engine ROM
11.3.4 PFC ROM
11.4 Firmware Updating with K-PWA-DLM-320
11.4.1 Scanner ROM
11.4.2 RADF firmware
11.4.3 Finisher firmware (MJ-1103/1104)
11.4.4 Saddle stitcher firmware (MJ-1104)
11.4.5 Hole punch unit firmware (MJ-6102)
11.4.6 Converter Firmware (MJ-1103/1104)
11.4.7 Fax unit firmware (GD-1270)
11.5 Confirmation of the updated data
11.6 When Firmware Updating Fails
11.6.1 Procedure
11.6.2 Flow chart for correcting USB update failure

12. BACKUP FUNCTION
12.1 Data Cloning
12.1.1 General description
12.1.2 Precautions
12.1.3 Backup files
12.1.4 Cloning procedure
12.2 AES Data Encryption Function Setting
12.2.1 General description
12.2.2 Precautions
12.2.3 Setting procedure
12.2.4 Procedure for disabling data encryption function
12.2.5 Procedure for discarding HDD when data encryption function is enabled
12.3 High Security Mode
12.3.1 General description
12.3.2 Prior confirmation
12.3.3 Procedure for entering the High Security Mode
12.3.4 Precautions

13. EXTERNAL COUNTERS
13.1 Outline
13.2 Signal
13.2.1 Pin Layout
13.2.2 Details of the signals
13.3 Notices
13.3.1 Setting code
13.3.2 Setting value change and restrictions when using the Card controller
13.3.3 Setting value change and restrictions when using the coin controller
13.3.4 Setting value change and restrictions when using the key counter
13.3.5 Installation of External Counter

14. WIRE HARNESS CONNECTION
14.1 AC Wire Harness
14.2 DC Wire Harness / Electric Parts Layout
14.2.1 DC Wire Harness (e-STUDIO5540C/6540C/6550C)
14.2.2 DC Wire Harness (e-STUDIO5560C/6560C/6570C)
14.2.3 Electric Parts Layout
15. SELF-DIAGNOSIS CODE (03/04/05/08 CODE)
Input check (test mode 03)
Output check (test mode 03)
Test print mode (test mode 04)
e-STUDIO5540C/6540C/6550C
Adjustment Mode (05) Codes
Setting Mode (08) Codes
e-STUDIO5560C/6560C/6570C
Adjustment Mode (05) Codes
Setting Mode (08) Codes

APPENDIX
IPreventive Maintenance Checklist (e-STUDIO5540C/6540C/6550C)
Preventive Maintenance Checklist (e-STUDIO5560C/6560C/6570C)

Number of pages: 2369.