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Toshiba e-STUDIO2500c Service Manual Download Page 394

e-STUDIO2500c/3500c/3510c POWER SUPPLY UNIT

May 2006 © TOSHIBA TEC

17 - 8

17.7 AC Wire Harness

 Fig. 17-3

Main switch

Scanner damp heater

* Optional for NAD/MJD model, standard for other models

Fuser

1

4

2

3

4

1

2

11

3

4

1

1

2

3

4

5

6

3

2

1

1

2

3

234

A

B

C

GND

Relay

F1

FG

Neutral

Inlet

(AC IN)

Live

AC (L)

AC (N)

AC (L)

AC (N)

Black

White

Black

White

CN493

FIL

 board

123

CN497

Relay

+5.1VB

SG

CN433

CN432

AC(N: Main)

AC(L: Main)

AC(N: Cover)

AC(L: Cover)

Black

J701

J701

J704

J703

J706

J705

White

Breaker

White

Black

Black

White

Black

White

Black

Cover interlock switch

Dram damp heater

Center heater lamp

control circuit

Side heater lamp

control circuit

Pressure roller lamp

control circuit

Center heater lamp

Side heater lamp

Pressure roller lamp

Black

Black

Black

J644

Black

Red

B

lue

Black

White

White

White

White

White

Black

Black

1

3

2

4

1B

2B

1A

2A

White

Black

J658

J659

Dram damp heater

thermostat (Right)

Dram damp heater

thermostat (Left)

2

1

2

1

2

Dram damp heater

(Left)

1

2

1

Dram damp heater

(Right)

White

White

Black

White

White

Black

AC(N: DRM-R)

AC(N: DRM-R)

AC(L: DRM-R)

AC(N: DRM-L)

AC(L: DRM-L)

Not used

SG

+5.1VB

Black

Yellow

AC(L: DRM-R)

AC(N: DRM-L)

AC(L: DRM-L)

2

1

1

2

J652

J64

J63

CN409

AC(L)

AC(N: BL-CENTER)

AC(N: BL-SIDE)

AC(N: PL)

J702

Scanner damp heater

thermostat

2

1

2

1

2

1

1

2

White

White

Black

AC(N: SCN)

AC(L: SCN)

Scanner damp heater

(Right)

Scanner damp heater

(Left)

White

Black

J657

2

1

2

1

White

Black

DC

AC-DC

power supply circuit

(Cover switch line)

Switching regulator

CN401

1

4

3

6

CN412

+5.1VB

SG

Yellow

Black

+5.1VB

SG

2

1

J650

3

2

1

3

2

1

F101

DC

AC-DC

power supply circuit

(Main switch line)

F102

Fuser belt

rear

thermostat

Fuser belt

center

thermostat

Pressure roller thermostat

Summary of Contents for e-STUDIO2500c

Page 1: ...SERVICE MANUAL MULTIFUNCTIONAL DIGITAL COLOR SYSTEMS e STUDIO2500c 3500c 3510c File No SME06000100 R060121A3200 TTEC Ver00_2006 05 ...

Page 2: ...f Microsoft Corporation in the U S and or other coun tries Apple AppleTalk Macintosh and Mac are trademarks of Apple Computer Inc in the U S and other countries PostScript is a trademark of Adobe Systems Incorporated NOVELL NetWare and NDS are trademarks or registered trademarks of Novell Inc Molykote is a registered trademark of Dow Corning Corporation Other company names and product names in thi...

Page 3: ... the right and 10 cm 4 on the rear The equipment shall be installed near the socket outlet and shall be accessible Be sure to fix and plug in the power cable securely after the installation so that no one trips over it 2 General Precautions at Service Be sure to turn the power OFF and unplug the power cable during service except for the service should be done with the power turned ON Unplug the po...

Page 4: ...e very careful to treat the touch panel gently and never hit it Breaking the surface could cause malfunctions 3 Important Service Parts for Safety The breaker door switch fuse thermostat thermofuse thermistor IC RAMs including lithium batteries etc are particularly important for safety Be sure to handle install them properly If these parts are short circuited and their functions become ineffective...

Page 5: ...51c 3 13 4 GENERAL OPERATION 4 1 4 1 Overview of Operation 4 1 4 2 Description of Operation 4 2 4 2 1 Warming up 4 2 4 2 2 Ready ready for copying 4 2 4 2 3 Drawer feed copying 1st drawer paper feeding 4 3 4 2 4 Bypass feed copying 4 7 4 2 5 Interruption copying 4 7 4 3 Detection of Abnormality 4 8 4 3 1 Types of abnormality 4 8 4 3 2 Description of abnormality 4 9 4 4 Flow Chart 4 14 4 4 1 Power ...

Page 6: ... circuit 8 8 8 3 2 Polygonal motor control circuit 8 9 8 3 3 Mirror motor control circuit 8 10 8 4 Disassembly and Replacement 8 12 9 DRIVE SYSTEM 9 1 9 1 General Description 9 1 10 PAPER FEEDING SYSTEM 10 1 10 1 General Descriptions 10 1 10 2 Composition 10 2 10 3 Functions 10 3 10 4 Description of Operation 10 5 10 4 1 Drive of rollers 10 5 10 4 2 Operation of bypass pickup roller 10 6 10 4 3 Op...

Page 7: ... cam motor control circuit 13 10 13 6 Disassembly and Replacement 13 11 14 IMAGE QUALITY CONTROL 14 1 14 1 General Description 14 1 14 2 Composition 14 2 14 3 Principle of the Sensor 14 3 14 4 Flow Chart of Control Procedure 14 4 14 5 Disassembly and Replacement 14 5 15 FUSER UNIT PAPER EXIT SECTION 15 1 15 1 General Description 15 1 15 2 Composition 15 2 15 3 Functions 15 3 15 4 Description of Op...

Page 8: ...e STUDIO2500c 3500c 3510c CONTENTS May 2006 TOSHIBA TEC 4 17 4 Fuse 17 5 17 5 Configuration of Power Supply Unit 17 6 17 6 Sequence of Power Supply 17 7 17 7 AC Wire Harness 17 8 18 PC BOARDS 18 1 ...

Page 9: ...lb Cover for double sided copy Maximum size A3 LD Copy speed Copies min Plain paper 64 g m2 to 105 g m2 17 lb Bond to 28 lb Bond e STUDIO2500c e STUDIO3500c e STUDIO3510c Paper supply Paper size Drawer Bypass feed PFP LCF A4 LT only Size specified Size not specified A4 LT 35 25 35 25 18 15 35 25 35 25 B5 A5 R ST R A4 R B5 R LT R 26 20 26 20 18 15 26 20 B4 LG FOLIO COMPUTER 22 17 22 17 18 15 22 17 ...

Page 10: ...3 lb Cover 115 7 lb Index Thick 3 210 g m2 to 256 g m2 77 3 lb Cover to 94 5 lb Cover 141 4 lb Index OHP film Paper supply Paper size Drawer Bypass feed PFP LCF A4 LT only Size specified Size not specified A4 LT 17 5 17 5 17 5 17 5 8 5 8 5 17 5 17 5 17 5 17 5 B5 A4 R ST R A4 R B5 R LT R 13 13 13 13 8 5 8 5 13 13 B4 LG FOLIO COMPUTER 10 5 10 5 10 5 10 5 8 5 8 5 10 5 10 5 A3 LD 8 5 8 5 8 5 8 5 8 5 8...

Page 11: ...ided A4 LT landscape originals using RADF Multiple copying Up to 999 copies Key in set numbers Copy mode Sec e STUDIO2500c e STUDIO3500c e STUDIO3510c Single sided originals Single sided copies 1 set 24 35 35 68 24 35 34 14 19 75 34 14 3 sets 60 13 85 19 60 13 69 96 48 00 69 69 5 sets 94 15 130 09 94 15 103 57 74 37 103 57 Single sided originals Double sided copies 1 set 31 87 46 43 31 87 42 58 27...

Page 12: ...ght 137 5 mm x 2 equivalent to 2500 sheets 64 to 80 g m2 17 to 22 lb Bond Bypass feeding Stack height 11 mm equivalent to 100 sheets 64 to 80 g m2 17 to 22 lb Bond Capacity of originals in the reversing automatic document feeder Option A3 to A5 R LD to ST R 100 sheets 80 g m2 Stack height 16 mm or less Automatic duplexing unit Stackless Switchback type Toner supply Automatic toner density detectio...

Page 13: ...KRD Korea ARD Argentina JPD Japan Unpacking Setup instruction 1 set Operator s manual 1 set except for ASU Operator s manual pocket 1 pc Power cable 1 pc Warranty sheet 1 pc for NAD Setup report 1 set for NAD MJD and CND PM sticker 1 pc for MJD Process unit 4 pcs Control panel stopper 1 pc Rubber plug 6 pcs Blind seal small large 3 pcs 1 pc CD ROM 2 pcs except for ASU Developer material Y M C K 1 ...

Page 14: ...c Document Feeder RADF MR 3018 Large Capacity Feeder LCF KD 1019A4 LT C Paper Feed Pedestal PFP KD 1018 C Drawer module MY 1031 C Finisher MJ 1101 Saddle stitch finisher MJ 1030 Hole punch unit MJ 6101N E F S for MJ 1101 MJ 6004N E F S for MJ 1030 Staple cartridge STAPLE 2400 for MJ 1101 STAPLE 2000 for MJ 1030 STAPLE 600 for saddle stitcher of MJ 1030 Bridge kit KN 3500 Work table KK 3511 Damp he...

Page 15: ...PS ZTFC35CK for China Toner cartridge Y PS ZTFC35Y for North America Central and South America PS ZTFC35EY for Europe PS ZTFC35DY for Australia and Asia PS ZTFC35CY for China Toner cartridge M PS ZTFC35M for North America Central and South America PS ZTFC35EM for Europe PS ZTFC35DM for Australia and Asia PS ZTFC35CM for China Toner cartridge C PS ZTFC35C for North America Central and South America...

Page 16: ...C 1260 Antenna GN 3010 FAX unit GD 1210 NA AU AS EU C TW KR 2nd Line for FAX unit GD 1160 NA EU N C TW Wireless LAN module GN 1041 EFI Printer board GA 1210 E Data overwrite kit GP 1060 C Damp Heater MF 3500CU CE Drawer Module MY 1031 C Large Capacity Feeder LCF KD 1019 A4 LT C Paper Feed Pedestal PFP KD 1018 C Staple Cartridge STAPLE 2000 Hole Punch Unit MJ 6004 N E F S Hole Punch Unit MJ 6101 N ...

Page 17: ...E MACHINE 2 1 2 OUTLINE OF THE MACHINE 2 1 Sectional View 1 Front side 1 Fig 2 1 A1 C1 C2 B1 G1 G2 G4 D1 F1 F7 F8 F3 F6 F4 F5 F2 D2 E1 D3 D13 D14 D16 D15 D9 D4 B2 B3 B8 B4 B9 B11 B12 B13 B10 B5 B6 B7 D5 D6 D7 D8 D10 D11 D12 F9 F10 F11 F14 F15 F12 F13 F16 F17 G3 G5 ...

Page 18: ...t roller center rear thermostat B13 Scanning section control PC board F9 Pressure roller C1 Laser optical unit F10 Pressure roller lamp C2 Polygonal motor F11 Pressure roller center thermistor D1 Registration roller rubber roller F12 Pressure roller rear thermistor D2 Registration roller metal roller F13 Pressure roller thermostat D3 Transport roller F14 Separation finger D4 1st drawer F15 Separat...

Page 19: ...c 3500c 3510c OUTLINE OF THE MACHINE 2 3 2 Front side 2 Fig 2 2 H1 I1 M3 M4 M5 M6 M8 M9 M10 M11 M12 M2 M7 I3 I2 H2 H3 H5 H6 H4 I4 I6 I8 I9 I10 I7 I5 L1 M1 L3 L2 L4 L6 L8 L9 L10 L7 L5 J1 J3 J2 J4 J7 J8 J9 J6 J5 K1 K3 K2 K4 K7 K8 K9 K6 K5 ...

Page 20: ...per sleeve Y L7 Developer sleeve K I8 Mixer 1 Y L8 Mixer 1 K I9 Mixer 2 Y L9 Mixer 2 K I10 Auto toner sensor Y L10 Auto toner sensor K J1 Drum M M1 Transfer belt J2 Cleaning blade M M2 Transfer belt drive roller J3 Recovery blade M M3 1st transfer roller Y J4 Main charger unit M M4 1st transfer roller M J5 Discharge LED M M5 1st transfer roller C J6 Developer sleeve M M6 1st transfer roller K J7 M...

Page 21: ...2006 TOSHIBA TEC e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE 2 5 3 Rear side Fig 2 3 M1 M2 M3 M4 M5 M7 M8 M11 M22 M17 M18 M9 M14 M15 M16 M13 M20 M21 M10 M6 M12 CLT8 CLT7 M19 CLT1 CLT2 CLT3 CLT4 CLT5 CLT6 ...

Page 22: ... motor M7 Transfer belt motor M22 ADU motor M8 1st transfer roller cam motor CLT1 1st drawer transport clutch High speed M9 Developer unit motor CLT2 1st drawer transport clutch Low speed M10 Drum motor CLT3 1st drawer feed clutch M11 Drum switching motor CLT4 2nd drawer transport clutch Low speed M12 Shutter motor CLT5 2nd drawer transport clutch High speed M13 Polygonal motor CLT6 2nd drawer fee...

Page 23: ...IBA TEC e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE 2 7 2 2 Electric Parts Layout A Scanner unit control panel Fig 2 4 SLG CCD S5 S4 S3 S3 S2 S1 S2 M1 M30 S7 EXP INV S6 USB SW1 KEY TCP DSP S4 S5 LT series models ...

Page 24: ...e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE May 2006 TOSHIBA TEC 2 8 B Toner cartridge toner bag Fig 2 5 M23 S12 S14 M6 S13 Y M2 M M3 C M4 K M5 Y S8 M S9 C S10 K S11 Y M C K ...

Page 25: ...2 May 2006 TOSHIBA TEC e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE 2 9 C Transfer belt unit Fig 2 6 M7 S17 M8 SOL2 S18 S16 S15 ...

Page 26: ...0c 3510c OUTLINE OF THE MACHINE May 2006 TOSHIBA TEC 2 10 D Developer unit Fig 2 7 M12 S20 S21 THM2 Y EPU Y M EPU M C EPU C K EPU K M11 S19 M10 M9 M24 THM1 Y M C K Y ERS Y M ERS M C ERS C K ERS K Y S22 M S23 C S24 K S25 ...

Page 27: ...2 May 2006 TOSHIBA TEC e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE 2 11 E Laser unit Fig 2 8 M14 M13 e STUDIO3510c LDR Y LDR C LDR K M29 LDR M M15 M16 SNS ...

Page 28: ...e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE May 2006 TOSHIBA TEC 2 12 F Fuser unit Fig 2 9 M17 THMO2 THMP2 THMO1 THMP1 THM3 LAMP3 LAMP1 LAMP2 M18 M25 S26 THM5 FS1 THMO3 THM4 ...

Page 29: ...2 May 2006 TOSHIBA TEC e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE 2 13 G Transfer unit Fig 2 10 SW2 M19 SW3 S27 S28 S29 ...

Page 30: ...e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE May 2006 TOSHIBA TEC 2 14 H Paper feeding unit Fig 2 11 M20 S33 SW5 M21 S37 SW6 CLT1 CLT2 CLT3 CLT4 S30 SW4 S34 S31 S32 S35 S36 CLT5 CLT6 ...

Page 31: ...2 May 2006 TOSHIBA TEC e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE 2 15 I Automatic duplexing unit bypass feed unit Fig 2 12 S38 S39 SFB SOL1 CLT8 S40 S41 ADU CLT7 M22 SW7 ...

Page 32: ...e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE May 2006 TOSHIBA TEC 2 16 J PC board power supply Fig 2 13 LGC PS M26 IMG SYS HDD HVT BRK1 FIL M27 M28 JSP ...

Page 33: ...2 May 2006 TOSHIBA TEC e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE 2 17 K Damp heater Fig 2 14 DH2 THMO6 DH4 DH1 THMO5 DH3 THMO4 ...

Page 34: ...ler contact release movement Fig 2 6 32 19 M9 DEV MOT Developer unit motor Driving the developer Fig 2 7 15 2 M10 DRM MOT Drum motor Driving the drum Fig 2 7 16 2 M11 DRM SW MOT Drum switching motor Transmitting releasing the drive to the Y M C drums Fig 2 7 16 22 M12 SHUT MOT Shutter motor Driving the laser emission outlet slit glass protective shutter Fig 2 7 36 2 M13 POL MOT Polygonal motor Dri...

Page 35: ...g original size S1 only for A4 series models Fig 2 4 12 12 12 13 S6 HOME SNR Carriage home position sensor Detecting the carriage home position Fig 2 4 12 17 S7 PLTN SNR Platen sensor Detecting the opening closing status of the platen cover or RADF Fig 2 4 19 10 S8 TNR SNR Y Toner cartridge detection sensor Y Detecting the presence of the Y toner cartridge Fig 2 5 41 101 S9 TNR SNR M Toner cartrid...

Page 36: ...7 38 31 S24 ATTNR SNR C Auto toner sensor C Detecting the toner density in the C developer unit Fig 2 7 38 31 S25 ATTNR SNR K Auto toner sensor K Detecting the toner density in the K developer unit Fig 2 7 38 31 S26 EXIT SNR Exit sensor Detecting paper exit Fig 2 9 45 101 S27 CLNG SNR Paper clinging detection sensor Detecting whether the paper is clinging to the transfer belt or not Fig 2 10 13 10...

Page 37: ... duplexing unit Cover open Shut off Fig 2 10 7 112 SW3 TR COV SW Transfer cover switch Detecting the opening closing status of the transfer cover Fig 2 10 6 106 SW4 SIDE COV SW Side cover switch Detecting the opening closing status of the side cover Fig 2 11 26 102 SW5 CST1 SW 1st drawer detection switch Detecting the presence of the 1st drawer Fig 2 11 21 102 SW6 CST2 SW 2nd drawer detection swit...

Page 38: ...ction control PC board SLG board Controlling the scanning section Fig 2 4 12 38 DSP PWA F DSP Display PC board DSP board Controlling the whole control panel Fig 2 4 3 25 KEY PWA F KEY Key PC board KEY board Controlling the key switches and LEDs Fig 2 4 3 26 USB PWA F USB USB PC board USB board Connection interface of the USB stor age device Fig 2 4 12 16 EPU Y PWA F EPU Y EPU PC board Y EPU Y boar...

Page 39: ... PWA F FIL Filter PC board FIL board Filtering out the AC power noise Power supplying to each damp heater Fig 2 13 8 2 Symbol Name Function Remarks P I EXP LP EXPO Exposure lamp Exposing originals Fig 2 4 29 6 ERS Y LP ERS Y Discharge LED Y Eliminating residual charge on the Y drum surface Fig 2 7 36 19 ERS M LP ERS M Discharge LED M Eliminating residual charge on the M drum surface Fig 2 7 36 19 ...

Page 40: ...g the surface temperature of the center of the fuser belt Fig 2 9 46 4 THMP2 THMP FBLT R Fuser belt rear thermopile Detecting the surface temperature of the rear end of the fuser belt Fig 2 9 46 4 THMO1 THERMO FBLT C Fuser belt center thermostat Preventing overheating of the center portion of the fuser belt Fig 2 9 43 20 THMO2 THERMO FBLT S Fuser belt rear thermostat Preventing overheating of the ...

Page 41: ...ing various kinds of information Fig 2 4 3 19 FS1 FUSE FUS Fuser unit fuse Determining the used status of the fuser unit Determining whether a unit is new or used Fig 2 9 43 32 HDD HDD Hard disk Saving program data and image data Fig 2 13 9 111 PS PS ACC Switching regulator Generating DC voltage and supplying it to each section of the equipment Fig 2 13 8 9 BRK BRK Breaker Preventing overcurrent t...

Page 42: ... Motors Clutches Key counter Solenoids Copy key card Coin controller Finisher Bridge unit I O Finisher Control panel HDD Wireless LAN adapter FAX unit CCD Flash ROM 512 KByte EEPROM 512 Byte SRAM 128 KByte Amp A D Amp A D Amp A D LVDS driver LVDS receiver LAN 10BASE T 100BASE TX Internal USB host USB host Rear USB device Option R G K odd B K even Laser beam sensor Laser diode ASIC ASIC ASIC System...

Page 43: ...tray 1 Open the front cover 2 Remove the toner bag P 12 11 A Toner bag 3 Remove 1 screw and take off the stopper belt 4 Raise 2 hinge pins on the right and left and then pull them out 5 Take off the front cover Fig 2 16 1 Open the front cover 2 Remove 2 screws and take off the inner tray Fig 2 17 Stopper belt Front cover Hinge pin Inner tray ...

Page 44: ...ack cover D Front upper cover 1 Take off the ozone filter 2 P 12 31 Q Ozone filter 2 2 Take off the inner tray P 2 27 B Inner tray 3 Remove 1 screw and take off the tray back cover Fig 2 18 1 Remove 2 screws and take off the front upper cover Fig 2 19 Tray back cover Front upper cover ...

Page 45: ...over F Left upper cover 1 Open the front cover and ADU 2 Remove 2 screws and take off the TBU lifting lever Fig 2 20 3 Release 2 latches and take off the front right cover Fig 2 21 1 Remove 3 screws and take off the left upper cover Fig 2 22 TBU lifting lever Front right cover Left upper cover ...

Page 46: ...0 G Left cover H Left rear cover 1 Remove 7 screws and take off the left cover Fig 2 23 1 Take off the ozone filter 1 P 12 29 M Ozone filter 1 2 Take off the left cover P 2 30 G Left cover 3 Remove 5 screws and take off the left rear cover Fig 2 24 Left cover Left rear cover ...

Page 47: ...MACHINE 2 31 I Left lower cover J Right upper cover 1 Take off the left rear cover P 2 30 H Left rear cover 2 Remove 2 screws and take off the left lower cover Fig 2 25 1 Remove 4 screws and take off the right upper cover Fig 2 26 Left lower cover Right upper cover ...

Page 48: ...ay 2006 TOSHIBA TEC 2 32 K Right rear cover L Right rear hinge cover 1 Remove 2 screws and take off the right rear cover Fig 2 27 1 Open the ADU 2 Remove 2 screws and take off the right rear hinge cover Fig 2 28 Right rear cover Right rear hinge cover ...

Page 49: ... Right front hinge cover 1 Take off the right rear hinge cover P 2 33 M Right lower cover 2 Remove 2 screws and take off the right lower cover Fig 2 29 1 Pull out the upper and lower drawers 2 Remove 2 screws and take off the right front hinge cover Fig 2 30 Right lower cover Right front hinge cover ...

Page 50: ...006 TOSHIBA TEC 2 34 O Bypass rear cover P Right inner cover 1 Remove 1 screw and take off the bypass rear cover Fig 2 31 1 Open the ADU and 2nd transfer unit 2 Remove 3 screws and take off the right inner cover Fig 2 32 Bypass rear cover Right inner cover ...

Page 51: ...r 1 1 Take off the RADF or the platen cover 2 Take off the left upper cover P 2 29 F Left upper cover 3 Take off the right upper cover P 2 31 J Right upper cover 4 Remove 2 screws and take off the upper rear cover Fig 2 33 1 Remove 2 screws and take off the rear cover 1 Fig 2 34 Upper rear cover Rear cover 1 ...

Page 52: ... 36 S Rear cover 2 T Rear cover 3 1 Take off the rear cover 1 P 2 35 R Rear cover 1 2 Remove 8 screws and take off the rear cover 2 Fig 2 35 1 Take off the rear cover 2 P 2 36 S Rear cover 2 2 Remove 3 screws and take off the rear cover 3 Fig 2 36 Rear cover 2 Rear cover 3 ...

Page 53: ...HDD is replaced refer to the respective Notes and Cautions of Replace ment of PC boards and HDD in Chapter 5 3 of the Service Handbook A Hard disk HDD 1 Take off the rear cover 1 P 2 35 R Rear cover 1 2 Remove 4 screws 3 Disconnect 2 connectors and take off the HDD case Fig 2 37 4 Remove 6 screws and take off the bracket Fig 2 38 HDD case ...

Page 54: ...s and the 2 ground wires 6 Remove 4 screws and take off the hard disk Fig 2 39 1 Take off the rear cover 2 P 2 36 S Rear cover 2 2 Remove 1 screw and loosen 9 screws Fig 2 40 3 Slide the board cover disconnect the con nector of the fan and take off the board cover Fig 2 41 Hard disk Ground wire Board cover ...

Page 55: ...2 screws and loosen 2 screws 3 Slide the FAX cover to take it off Fig 2 42 1 Take off the board cover P 2 38 B Board cover 2 Take off the FAX cover P 2 39 C FAX cover 3 Remove 2 screws and take off the metal plate Fig 2 43 4 Disconnect 3 connectors and remove 1 har ness clamp 5 Remove 4 screws and take off the SYS board Fig 2 44 FAX cover Metal plate SYS board ...

Page 56: ...e SYS board P 2 39 D SYS board 2 Disconnect 2 connectors 3 Remove 6 screws and slide the IMG board to take it off Fig 2 45 1 Take off the board cover P 2 38 B Board cover 2 Disconnect 20 connectors and take off 1 har ness clamp 3 Remove 8 screws and slide the LGC board to take it off Fig 2 46 IMG board LGC board ...

Page 57: ...T Rear cover 3 2 Remove 1 screw and take off the connector cover 3 Disconnect 2 connectors Fig 2 47 4 Disconnect 6 connectors 5 Remove 2 screws 6 Slightly lift up the switching regulator and release the hook to take it off Fig 2 48 1 Take off the switching regulator P 2 41 G Switching regulator 2 Disconnect 22 connectors Fig 2 49 Connector cover Switching regulator ...

Page 58: ...Fig 2 50 1 Take off the right lower cover P 2 33 M Right lower cover 2 Take off the rear cover 3 P 2 36 T Rear cover 3 3 Remove 5 screws and take off the filter bracket Fig 2 51 4 Remove the harness band 5 Disconnect 2 connectors and 2 terminals 6 Remove 2 screws release the locking sup port and take off the FIL board Fig 2 52 High voltage transformer Filter bracket FIL board ...

Page 59: ... cover P 2 31 J Right upper cover 2 Remove 2 screws and disconnect 1 connec tor Take off the USB PC board with the bracket Fig 2 53 3 Remove 2 screws release 2 locking sup ports and take off the USB PC board Fig 2 54 1 Take off the board cover P 2 38 B Board cover 2 Remove 5 screws and disconnect 5 connec tors Fig 2 55 USB PC board ...

Page 60: ...e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE May 2006 TOSHIBA TEC 2 44 3 Open the board case Fig 2 56 Board case ...

Page 61: ...isassembly and Replacement of Covers A MR 3018 Reversing Automatic Document Feeder RADF 1 Turn OFF the power and unplug the power cable 2 Take off the connector cover Fig 2 57 3 Disconnect the connector Fig 2 58 4 Remove 1 screw and 1 washer on the rear side Fig 2 59 Connector cover ...

Page 62: ...e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE May 2006 TOSHIBA TEC 2 46 5 Remove 1 screw on the rear side Fig 2 60 6 Open the RADF Fig 2 61 7 Remove 2 screws on the front side Fig 2 62 ...

Page 63: ...ling the platen cover or taking off the platen cover and installing the RADF the position of the installing screw for the damper holding bracket of the scanner should be as follows 1 Remove 1 screw and take off the gel cover 2 Change the position of the installing screw for the damper holding bracket Installing the RADF A Installing the platen cover B Fig 2 64 Fig 2 65 Gel cover A B ...

Page 64: ...stal PFP 1 Turn OFF the power and unplug the power cable 2 Remove 2 screws and take off the rear cover 1 Fig 2 66 3 Remove 8 screws and take off the rear cover 2 Note Disconnect the connector of the RADF first when the RADF is installed Fig 2 67 4 Remove 3 screws and take off the rear cover 3 Fig 2 68 ...

Page 65: ...OF THE MACHINE 2 49 5 Remove 1 screw and the ground wire and then disconnect 1 connector Fig 2 69 6 Remove 2 screws and take off 2 fixing brack ets on the rear side Fig 2 70 7 Take off the 2nd drawer of the equipment and PFP 1st drawer Fig 2 71 Fixing bracket ...

Page 66: ...rge Capacity Feeder LCF 8 Remove 4 screws and take off 2 fixing brack ets on the front side Fig 2 72 9 Lift up the equipment and take off the PFP Fig 2 73 1 Turn OFF the power and unplug the power cable 2 Remove 2 screws and take off the rear cover 1 Fig 2 74 Fixing bracket Fixing bracket ...

Page 67: ... 2 51 3 Remove 8 screws and take off the rear cover 2 Note Disconnect the connector of the RADF first when the RADF is installed Fig 2 75 4 Remove 3 screws and take off the rear cover 3 Fig 2 76 5 Remove 1 screw and the ground wire and then disconnect 1 connector Fig 2 77 ...

Page 68: ... OUTLINE OF THE MACHINE May 2006 TOSHIBA TEC 2 52 6 Remove 2 screws and take off 2 fixing brack ets on the rear side Fig 2 78 7 Take off the 2nd drawer of the equipment Fig 2 79 8 Pull out the LCF drawer Fig 2 80 Fixing bracket ...

Page 69: ... Finisher 9 Remove 4 screws and take off 2 fixing brack ets on the front side Fig 2 81 10 Lift up the equipment and take off the LCF Fig 2 82 1 Turn OFF the power and unplug the power cable 2 Take off the connector cover and disconnect the connector Fig 2 83 Fixing bracket Fixing bracket ...

Page 70: ...0c 3510c OUTLINE OF THE MACHINE May 2006 TOSHIBA TEC 2 54 3 Open the finisher front cover and remove 1 screw Fig 2 84 4 Remove 1 screw and take off the cover of the finisher rear side Fig 2 85 5 Remove 1 screw Fig 2 86 ...

Page 71: ...101 Finisher 6 Take off the finisher Note Be careful not to fell the finisher when mov ing only the finisher unit Fig 2 87 1 Turn OFF the power and unplug the power cable 2 Take off the connector cover and disconnect the connector Fig 2 88 3 Remove 1 screw and the ground wire Fig 2 89 ...

Page 72: ... punch unit 4 Remove 1 screw and take off the fixing plate Fig 2 90 5 Take off the finisher Note Be careful not to fell the finisher when mov ing only the finisher unit Fig 2 91 1 Turn OFF the power and unplug the power cable 2 Take off the connector cover and disconnect connector Fig 2 92 ...

Page 73: ...EC e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE 2 57 3 Open the front cover of the hole punch unit and remove 1 screw Fig 2 93 4 Take off the cover of the punch unit lower side Fig 2 94 5 Remove 1 screw Fig 2 95 Cover ...

Page 74: ...2006 TOSHIBA TEC 2 58 6 Remove 3 screws and take off the punch unit rear cover Fig 2 96 7 Remove 1 screw Fig 2 97 8 Take off the finisher with the hole punch unit Note Be careful not to fell the finisher when mov ing only the finisher unit Fig 2 98 Cover ...

Page 75: ...2 May 2006 TOSHIBA TEC e STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE 2 59 9 Disconnect 2 connectors Fig 2 99 10 Remove 2 screws Fig 2 100 11 Lift up the punch unit and take it off Fig 2 101 ...

Page 76: ...SHIBA TEC 2 60 G MJ 6101 Hole punch unit 1 Turn OFF the power and unplug the power cable 2 Take off the connector cover and disconnect connector Fig 2 102 3 Remove 1 screw and the ground wire Fig 2 103 4 Take off the cover of the punch unit lower side Fig 2 104 ...

Page 77: ...MACHINE 2 61 5 Remove 1 screw and take off the fixing plate Fig 2 105 6 Take off the finisher with the hole punch unit Note Be careful not to fell the finisher when mov ing only the finisher unit Fig 2 106 7 Remove 1 screw and take off the connector cover Fig 2 107 ...

Page 78: ...c 3510c OUTLINE OF THE MACHINE May 2006 TOSHIBA TEC 2 62 8 Disconnect 1 connector Fig 2 108 9 Take off the cover of the punch unit lower side Fig 2 109 10 Remove 4 screws Lift up the punch unit and take it off Fig 2 110 ...

Page 79: ...STUDIO2500c 3500c 3510c OUTLINE OF THE MACHINE 2 63 H KN 3500 Bridge unit 1 Turn OFF the power and unplug the power cable 2 Open the bridge unit Remove 1 screw Fig 2 111 3 Take off the cover Fig 2 112 4 Remove 1 screw Fig 2 113 ...

Page 80: ...c OUTLINE OF THE MACHINE May 2006 TOSHIBA TEC 2 64 5 Remove 4 screws and take off the plate Fig 2 114 6 Disconnect 1 connector Fig 2 115 7 Lift up the bridge unit and release the hook Take off the bridge unit toward the front ...

Page 81: ...ove three colors at proper ratio Fig 3 1 In this equipment 4 color process units EPU which include a drum a developer unit and a main charger for yellow magenta cyan and black are placed in parallel Colors are developed in the order of Yellow Y Magenta M Cyan C Black K An image with the 4 developed colors is trans ferred on the transfer belt by layering the colors one by one 1st transfer Then the ...

Page 82: ...ive recovery blade eliminates the charges on the pho toconductive drum applied during the trans fer stage 5 Development Negatively charged toner is made to adhere to the photoconductive drum producing a visible image 10 Blade cleaning While scraping off the resid ual toner from the drum by the blade 11 Discharging Eliminates the residual charge from the surface of the photocon ductive drum 20 W CC...

Page 83: ... Increases resistance works as an insulator Fig 3 4 Formation of electrostatic latent images In the processes of charging data reading data writing and discharging described below the areas on the drum corresponding to colored areas on the original are deprived of negative charge while the areas on the drum corresponding to white areas retain the negative charge Thus it forms a neg ative charge im...

Page 84: ... the grid control circuit Fig 3 6 3 Data reading scanning Data reading is a process of illuminating the original with light and converting the reflected light into electrical signals The light reflected from the original is directed to the Charge Coupled Device CCD and this optical image information is converted to electrical signals image signals which are then transmitted to the image processing...

Page 85: ... image processing section into light signals and exposing the drum surface with the light signal Namely the image signals transmitted from the image processing section are converted into optical signals laser emission by the semiconductor laser element which are then used to expose the drum surface thus forming an electrostatic latent image there Fig 3 9 CCD light receiving amount Example Value of...

Page 86: ...oper bias which is applied to the magnetic roller reverse develop ment Fig 3 12 Fig 3 10 Fig 3 11 Drum Magnetic roller Photoconductive layer Magnetic roller Photocon ductive drum Aluminum base Toner Carrier always attracted onto the magnet Toner Bias voltage 400V 200 to 900V DC 1100V 7 5 to 10kHz AC Toner Bias voltage When the potential of the photoconductive drum is higher than the developer bias...

Page 87: ...sts of ferrite and over its surface resin coating to provide consistent frictional electrification Fig 3 13 Note If the developer material is used for a long period of time beyond its normal life span toner will become caked onto the carrier The performance of the carrier is lowered Result 1 Image density is lowered 2 Toner scattering occurs 3 Background fogging occurs Solution Replace the develop...

Page 88: ...tic rollers the south and north poles are arranged as shown in the figure below The developer material forms a brush like fluff which contacts the photoconductive drum surface This is caused by the lines of magnetic force between the south and north poles Fig 3 15 N S S Lines of magnetic force Magnetic roller Photoconductive drum ...

Page 89: ... positively charged This in turn helps to form an electric field E between the transfer belt positive and the photoconductive layer of the photoconductive drum grounded thus making the toner image transferred to the transfer belt In the copy process of this equip ment images are transferred in the order of Y M C K on the transfer belt Fig 3 16 Fig 3 17 Y K C M Photoconductive drum Transfer belt To...

Page 90: ... toner is transferred from the belt to the paper Fig 3 18 8 Fusing process Fusing is a process of melting the toner on the paper and fixing it firmly onto the paper Method The softening point of the toner main component resin is 105 120 C Heat Toner is melted by the fuser belt Pressure The fuser belt is pressed against the pressure roller by the springs to increase adherence of the melted toner to...

Page 91: ...ery blade which is pressed against the drum to eliminate the charge applied at the transfer process Fig 3 20 10 Cleaning The edge of the cleaning blade is pressed against the photoconductive drum surface to scrape off residual toner The toner removed is then caught by the conductive recovery blade in order to pre vent the toner from scattering to outside of the cleaner Fig 3 21 800V 800V 0 Elimina...

Page 92: ... surface causes uneven application of the charge for the next copying The next copy obtains a double image The preceding image remains To prevent this The entire surface of the photoconductive drum is flooded with light by the discharge LED array The photoconductive drum becomes electrically conductive All of the charge remaining on the photoconductive drum is conducted away to ground However char...

Page 93: ... T 3511C K T 3511C Y T 3511C M T 3511C C Others T 3511D K T 3511D Y T 3511D M T 3511D C K Black Y Yellow M Magenta C Cyan 6 D 3511 K black D 281C Y yellow D 281C M magenta D 281C C cyan 7 DC 100 to 900 V adjusting by image quality control Color AC 1 0 kV 10 kHz Black AC 1 2 kV 10 kHz 1 One magnetic roller 2 Magnetic bridge circuit method 3 Toner cartridge replacing method 4 Density detection metho...

Page 94: ...sh Fuser belt PFA tube belt ø55 Separation roller Sponge roller ø20 2 Oil roller method Oil roller ø18 Cleaning roller ø16 3 ON OFF control and power control by thermistor 4 IH coil 1 Belt fusing system Fuser roller Aluminium roller ø30 Heater lamp 600 W x 2 Pressure roller Silicon rubber roller Surface PFA tube ø40 Heater lamp 300 W x 1 Fuser belt PFA tube belt ø60 Fuser roller Sponge roller ø38 ...

Page 95: ...3510c GENERAL OPERATION 4 1 4 GENERAL OPERATION 4 1 Overview of Operation Operation of equipment Operation during initializing pre running and ready Copying operation Drawer feed copying by the START button Bypass feed copying Interrupt copying ...

Page 96: ...peak detection position The exposure lamp EXP is turned ON Peak detection white color is detected by the shading correction plate The exposure lamp EXP is turned OFF The polygonal motor M13 rotates in low speed READY WARMING UP is displayed 2 Pre running operation Pre running operation is started when the temperature of the fuser belt surface reaches a certain temperature Fuser motor M17 is turned...

Page 97: ...y counter operates 4 Completion of scanning Exposure lamp EXP turned OFF Scan motor M1 turned OFF Registration motor M19 turned OFF after the trailing edge of the paper passed the registration roller READY PRINTING is displayed 5 Printing operation 1 Color printing operation Drum switching motor M11 turned ON The drum switching detection sensor S19 checks whether the equipment is in the color or b...

Page 98: ...us to black printing Drum motor M10 transfer belt motor M7 discharge LED K ERS and cleaning blade bias turned ON Main charger bias turned ON K developer bias DC and developer unit motor M9 turned ON Registration motor M19 turned ON Contact the 2nd transfer roller to the transfer belt 2nd transfer bias turned ON K developer bias AC turned ON Laser emission black image 1st transfer bias K turned ON ...

Page 99: ...ler cam motor Fuser motor PVDEN Y signal PVDEN M signal PVDEN C signal PVDEN K signal fwd rev Registration sensor Exit sensor Exit motor Feed transport motor 1st drawer feed sensor 1st drawer transport clutch High speed 1st drawer transport clutch Low speed 1st drawer feed clutch Registration motor Scan motor Drum switching motor Developer unit motor 0 206 652 1936 2048 454 456 652 1936 2196 5058 ...

Page 100: ...37 6398 435 300 300 1121 3089 3104 547 801 557 717 Unit msec fwd rev Exposure lamp SVDEN signal Transfer belt motor Drum motor fwd rev fwd rev 1st transfer roller cam motor Fuser motor PVDEN K signal fwd rev Registration sensor Exit sensor Exit motor Feed transport motor 1st drawer feed sensor 1st drawer transport clutch High speed 1st drawer transport clutch Low speed 1st drawer feed clutch Regis...

Page 101: ...ss pickup roller feed roller and separation roller start to rotate Aligning operation Paper reaches the registration roller After a certain period of time the bypass feed clutch CLT8 turned OFF 4 Hereafter operations 3 through 6 of 4 2 3 Drawer feed copying are repeated 4 2 5 Interruption copying 1 Press the INTERRUPT button LED INTERRUPT is turned ON Copying operation in progress is temporarily s...

Page 102: ...or mality are displayed 4 3 1 Types of abnormality 1 Abnormality cleared without turning OFF the door switch A Add paper B Paper misfeed in bypass 2 Abnormality not cleared without turning OFF the door switch C Misfeed in equipment D No toner in the cartridge E EPU not installed properly F Toner bag replacement 3 Abnormality not cleared without turning OFF the main switch G Call for service ...

Page 103: ... drawer is selected START button is disabled When the power is turned ON or LCF drawer is inserted When the power is turned ON or equip ment PFP drawers are inserted LCF performs initialization Detects the presence of paper Tray up motor ON The tray goes up At this time the tray up sensor and LCF empty sensor are OFF When the tray up sensor is not turned ON in a fixed period of time it means that ...

Page 104: ...n spite of the tray up sensor is ON It is judged that there is no paper Drawer area of the control panel blinks When the drawer is selected The copying operation is stopped During bypass feeding Bypass feed clutch CLT8 is turned ON Registration sensor S28 is turned ON Registration sensor S28 is not turned ON in a fixed period of time E120 Bypass misfeeding Bypass misfeed symbol is displayed The co...

Page 105: ... S26 turned OFF If the exit sensor S26 is not turned OFF after approx 1 7 seconds Paper jam E020 The copying operation is stopped Immediately after the power ON Any of all sensors on paper transport path detects paper ON Paper jam E030 Front cover is opened during copying Paper jam E410 Registration sensor S28 detects jamming of the leading edge of paper The registration sensor S28 is not turned O...

Page 106: ...uipment or PFP The registration sensor S28 is not turned ON in a fixed period of time after the feed clutch is turned ON Paper jam E220 E310 E320 E340 to E360 E3D0 and E3E0 Error code defers depending on the paper source Toner density becomes low Auto toner sensor S22 S23 S24 S25 detects the absence of the toner Control circuit Install new toner cartridge is displayed the copying operation disable...

Page 107: ...ppears and handle the abnormality in reference to the error code table in Service Handbook Toner bag is full of used toner Toner bag full detection sensor S13 ON Dispose of used toner is displayed Toner bag full detection sensor S13 is turned ON during printing Printing is stopped after the paper being printed is exited Solution Replace the toner bag with new one and close the front cover ...

Page 108: ...ormal Home position detected Peak detected 1st drawer feed sensor ON 2nd drawer feed sensor ON YES NO Heater lamps ON Fans ON Polygonal motor high speed rotation ON E030 NO NO NO NO YES YES YES YES C260 NO Call for service 2nd transfer roller position abnormal NO C370 CEC0 NO CF90 Call for service CE70 Call for service CA10 Call for service C411 C412 C443 C445 C446 C449 C465 C466 C468 NO NO NO YES...

Page 109: ... ready temp Polygonal motor condition abnormal CE10 CE20 CE40 CE50 CE60 CE90 C411 C412 C413 C445 C446 C449 C465 C466 C468 CA00 CA10 YES YES YES NO H sync abnormal detection Call for service CA20 YES NO NO Call for service Fuser temp abnormal YES YES NO NO Fuser motor OFF Tray up motor OFF Performs image quality control Performs color registration control Drum motor OFF Transfer belt motor OFF Poly...

Page 110: ... system control Scanner system control Feed clutch ON Exposure lamp ON Carriage moves forward Carriage stopped Exposure lamp OFF Carriage moves backward Carriage stopped Feed clutch OFF Registration motor OFF Polygonal motor normal rotation Color printed Remaining set number 0 Exit sensor check leading edge NO YES NO YES YES C E Call for service Paper jam Paper jam E020 E010 CA10 Exit sensor check...

Page 111: ...F Black developer bias AC ON Color developer bias AC ON Registration motor ON 2nd transfer bias ON 2nd transfer bias OFF Laser emission yellow image 1st transfer yellow image Laser emission mgenta image 1st transfer magenta image Laser emission cyan image 1st transfer cyan image Laser emission black image 1st transfer black image 1st transfer roller cam motor ON Main charger bias OFF Black develop...

Page 112: ...ischarge LED ON Recovery blade bias ON Drum motor OFF Transfer belt motor OFF Discharge LED OFF Recovery blade bias OFF Black developer bias AC ON Registration motor ON 2nd transfer bias ON 2nd transfer bias OFF Laser emission black image 1st transfer black image Registration motor ON NO YES CEC0 Call for service Drum switching detection sensor OFF NO YES Drum switching detection sensor OFF NO YES...

Page 113: ...modes and LEDs and an LCD to display the state of the equipment or the messages When the operator s attention is required graphic symbols light or blink with messages explaining the condition of the equipment in the LCD panel When paper jams and Call for service occur error codes are also displayed to notify users of the problem A color LCD is used in this equipment so that visibility and operabil...

Page 114: ...splay 1 Basic display Displays buttons and messages Fig 5 2 2 Paper jam service call display Displays error code paper jam position and paper jam release guidance etc Fig 5 3 YYYY MM DD Jam release guidance No toner in the cartridge Toner bag replacement Paper jam position Error code Service call symbol Message ...

Page 115: ... job 10 READY WARMING UP Scanner warming up Ready to scan the original 11 READY PRINTING Printing out the data Scanning is enabled 12 READY ADDING TONER Supplying toner Scanning is enabled 13 READY INNER TRAY FULL Inner tray in the equipment is full Scanning is enabled When the bridge unit is installed Resumes printing by removing papers from the tray 14 READY CHECK STAPLER No staples in finisher ...

Page 116: ...cified for the functions such as stapling or hole punching is set 35 Copy size A4 LT only Displayed when the paper size which is not specified for Book type duplex copying or Dual page is set 36 Copy size A4 LT and A4 R LT R Displayed when the paper size which is not specified for Rotate Sort 37 CHANGE DRAWER TO CORRECT PAPER SIZE Displayed when the selected paper size is not in the drawer 38 Chan...

Page 117: ...itch unit Finisher is full of papers 54 Examine stapler Trouble in the stapler unit in finisher 55 Check staple cartridge No stapler in finisher section 56 Check staple cartridge in the saddle stitch unit No stapler in saddle stitch unit 57 Job interrupted job 1 saved Interrupt copying is accepted 58 Ready to resume job 1 Interrupt copying is cancelled finished 59 Cannot use AMS mode Displayed whe...

Page 118: ...the cartridge Displayed when black toner is run ning out even if other toner still remain Copying not enabled 74 Install new Yellow toner cartridge No yellow toner in the cartridge Black copying is available Other button functions are available 75 Install new Magenta toner cartridge No magenta toner in the cartridge Black copying is available Other button functions are available 76 Install new Cya...

Page 119: ...ease try again after a while Displayed when the Department Code can no be keyed in immedi ately after power ON Leave it for a while and key in the code again 87 Set standard size Displayed when the paper size which is not acceptable is set depends on the setting Reset the paper size 88 Time for Main charger cleaning Appears when the time for main charger cleaning comes at every output of approx 10...

Page 120: ...ress START to copy and MEMORY CLEAR are displayed Press CLEAR button after set ting the copy mode Number of printouts changes to 1 while the setting remains unchanged after the copy mode is set Number of printouts changes to 1 while the setting remains unchanged after the copy mode is set Display not changed Display not changed Press CLEAR button after key ing in numbers digital keys Number keyed ...

Page 121: ...s FUNCTION CLEAR button after setting the copy mode Copy mode is cleared after the copy mode is set Display not changed Copy mode is cleared after the copy mode is set Displays BASIC screen after the copy mode is set and then cancelled Display not changed Press STOP button Printing out stops and READY Press START to copy and MEMORY CLEAR are dis played Display not changed Display not changed Displ...

Page 122: ...PLATE button Displays TEM PLATE screen Display not changed Display not changed Displays TEM PLATE screen Display not changed Press USER FUNCTIONS button Displays USER FUNCTIONS screen Display not changed Display not changed Displays USER FUNCTIONS screen Display not changed Press HELP button Displays HELP screen Display not changed Displays HELP screen Switches to the screen previously displayed D...

Page 123: ... x R G B x 240 dot display capacity It consists of a driver LSI frame printed circuit board and lateral type CCFL backlight STN Super Twisted Nematic CCFL Cold Cathode Fluorescent Lamp 2 Block diagram Fig 5 5 640 x 240 dots SEG Driver IC AC signal generation circuit Inverter DC DC converter COM Driver IC VDD LOAD D0 D7 CP VSS VSS V1 FRM VCONT DISP VH VM DF DISP VL to each SEG IC LCD panel ...

Page 124: ...ard are received by the LCD controller and then displayed on the LCD The LED and buzzers are switched to ON OFF with the signals output from the panel processing CPU based on serial data transmitted from the SYS board Fig 5 6 4 Data Transmission Fig 5 7 Inverter for backlight Contrast adjustment circuit LCD display 640 x 240 dots LCD controller Analog input LED driver Buzzer Touch panel Decoder Ha...

Page 125: ...al becomes Low level Also when OUTP5 signal changes to Low level the current flows from 5 1VA via the transistor Q5 to the LED5 COPY to turned ON the LED5 Conditions to turn ON the LED 1 The transistor Q5 connected to the LED anode is ON 2 The transistor Q12 connected to the LED cathode side is ON The LED is turned ON when 1 and 2 are satisfied Low Low COPY LED5 G Q12 Q5 5 1VA SG SG Q4 COM1 OUTP5 ...

Page 126: ...4 5 5 Disassembly and Replacement A Stopper Note When taking off the control panel check the position of the stopper if the stopper is at the position b remove the stopper or move it to the position a Fig 5 9 1 Slide the stopper and pull it out Fig 5 10 b a Stopper ...

Page 127: ... right upper cover P 2 31 J Right upper cover 2 Disconnect 1 connector 3 Release the harness from 5 harness clamps Fig 5 11 4 Lower the control panel and remove 2 screws 5 Take off the control panel unit while sliding it Fig 5 12 6 Remove 3 screws and take off the cover Fig 5 13 Control panel unit Cover ...

Page 128: ...5 16 7 Remove 5 screws and take off the hinge bracket Fig 5 14 8 Disconnect 5 connectors 9 Release the harness from 2 harness clamps 10 Remove 1 screw and take off the DSP board Fig 5 15 11 Remove 4 screws and take off the LCD Fig 5 16 Hinge bracket DSP board LCD ...

Page 129: ...5 May 2006 TOSHIBA TEC e STUDIO2500c 3500c 3510c CONTROL PANEL 5 17 12 Remove 16 screws and take off the KEY board Fig 5 17 KEY board ...

Page 130: ...e STUDIO2500c 3500c 3510c CONTROL PANEL May 2006 TOSHIBA TEC 5 18 ...

Page 131: ...rtakes various corrective processes necessary for image formation After that arithmetic operation is performed on the digital signal which is then transmitted to the data writing section In this equipment a reduction type CCD for color processing is used What this CCD differs from black and white CCDs is that its devices are arranged in 4 lines and covered with color filters Red Green and Blue The...

Page 132: ...p 20W Inverter board INV Reflector Mirror 1 Carriage 2 Mirror 2 Mirror 3 Lens unit CCD driving PC board CCD Automatic original detection sensor S1 5 Driving section Scan motor M1 2 phase stepping motor Wire drive Driving the carriage 1 and carriage 2 Other Scanning section control PC board SLG Carriage home position sensor S6 Platen sensor S7 Main switch SW1 Rubber damper ...

Page 133: ...e ADF original glass by the carriage Do not use such solvents as alcohol when cleaning the surface of the ADF original glass because it is coated so as not to be scratched by originals 2 Carriage 1 Carriage 1 consists of the exposure lamp EXP Inverter board INV reflector mirror 1 etc It is driven by the scan motor M1 and scans an original on the glass Fig 6 2 Exposure lamp EXP This lamp is the lig...

Page 134: ...rom the mir ror 1 through the mirrors 2 and 3 to the lens This carriage is driven by the same scan motor M1 as that for the carriage 1 at half the scanning speed of the carriage 1 The scanning distance is also half that of the carriage 1 Fig 6 4 4 Lens unit The light reflected from the mirror 3 is led to the CCD placed at the focal point of the lens which is fixed in a position Original glass Orig...

Page 135: ...D Fig 6 5 6 Scanning section control PC board SLG This is a board to perform the image correction such as the shading correction and 3 line correc tion and control the scan motor M1 7 Automatic original detection sensor S1 5 The size of an original placed on the glass is instantly detected using the automatic original detec tion sensors S1 5 fixed on the base frame without moving the carriage 1 Le...

Page 136: ...e positions are detected when the carriage 1 passes the home position sensor S6 When the START button is pressed the both carriages start to move and scan the original on the glass Scanning of an original placed on the RADF The carriage 1 stays at the shading position during shading correction and at the scanning posi tion during scanning operation Scanning velocity The scanning velocity at color ...

Page 137: ...S NO Power ON Carriage home position sensor ON Carriage home position sensor OFF Carriage home position data set Moving peak detection position Peak detection Scanning command Completion of initialization Moving carriage waiting position Scan motor rotating Moves to the forward direction of carriage Carriage home position sensor ON Error handling Scan motor rotating Moves to the backward direction...

Page 138: ... output only when the enable signal MOTEN is a low level Also the rotation speed or direction of the motor can be switched by changing the output timing of each pulse signal Fig 6 8 Control signal CW Clockwise rotation CCW Counter clockwise rotation viewing from the axis Signal Function Status High level Low level MOTCLK Reference clock MOTEN Enable signal ON OFF MOTDIR Rotation direction signal C...

Page 139: ...eflected light amount from the original surface and the shading correction plate to electrical signals The exposure amount is controlled in two ways White reference formation reads the reflected light amount from the white shading correction plate Black reference formation reads the light amount at the regulation position with the exposure lamp lights OFF Fig 6 9 CCD board CCD sensor SLG board Exp...

Page 140: ... 10 2 Behavior inside the lamp The electron inside the pipe is led to the electric field by applying voltage to the pair of the external electrodes and discharge is started Electrons then flow and clash with the xenon atom inside the pipe to excite them and generate the ultraviolet ray This ultraviolet ray converts the fluorescer into the visible light Fig 6 11 PET film Aluminum tape electrode Adh...

Page 141: ...posure lamp enable signal LAMPON 0 WDTOUT 0 5VSOW 0 LMPEN 0 5VSW Q8 Exposure lamp State of equipment L H L L ON ON ON Normal operation H H L L ON OFF OFF L OFF OFF Scanner CPU overdriving H H OFF OFF Call for service H OFF Abnormality detected Check sum error PG 5VSW Exposure lamp Lighting device for exposure lamp Lamp inverter board LMPON 0 WDTOUT 0 LMPON 0A 5VSWON 0 SLG board Q8 Q1 LMPON 0 Scann...

Page 142: ...number and odd number elements are separated and output in parallel via two channels Fig 6 12 2 Shading correction Signal voltages read by the CCD have the following characteristics 1 Light source has a variation in its light distribution 2 Since the light beam reflected from the original is converged using a lens the light path is the short est at the center of the CCD and the longest at ends Thi...

Page 143: ...e scanner unit as shown in the figure below Each sensor consists of an infrared Light Emitting Diode LED on the light emitting side and a phototransistor on the light receiving side When there is an original on the original glass light beams from the LEDs are reflected by the original and led to the phototransistors This means that the presence of the original is detected by the pres ence of refle...

Page 144: ...flected from the original and if one of the matrix conditions shown in 4 for original sizes are met the size of the original is instantly detected 3 The output signal from each sensor is input to Scanner CPU on the SLG board to determine the size of the original Fig 6 14 SLG board APS C APS 3 APS 2 APS R Scanner CPU 5VAPS 5 1VB 5VAPS 5 1VB SG SG SLG board APS C APS 2 APS 3 APS 1 APS R Scanner CPU ...

Page 145: ...HIBA TEC e STUDIO2500c 3500c 3510c SCANNER 6 15 Sensor detection points A4 Series Fig 6 15 LT Series Fig 6 16 A5 B5 A4 B4 A3 A5 R A4 R B5 R APS R APS C APS 3 APS 1 APS 2 ST LT LG LD ST R LT R APS R APS C APS 3 APS 2 ...

Page 146: ...riginal state until new paper size is recognized No original Output from all the sensors are 1 Reproduction ratio and paper are not selected Size change is always observed and detected The carriage 1 stays at the standby position even if the reproduction ratio changes correspond ing to the change of the original size When the platen sensor S7 is ON The latest original size or no original state rec...

Page 147: ...otransistor It uses pulse modulation to detect an original Fig 6 17 The light emitting diode is driven by a pulse having a 130 µsec cycle and an 8 µsec ON time When the phototransistor receives the same signal as this pulse it is determined that there is an original The pulse modulation is performed inside the reflection type phototransistor 130 µsec LED Phototransistor Original 8 µsec ...

Page 148: ... cover P 2 31 J Right upper cover 2 Remove 2 screws and take off the fixing bracket Fig 6 18 3 Take off the original glass Note When installing fit 2 small protrusions of the original glass in the groove of the equipment and fix the original glass with the fixing bracket by pushing it to the left rear direction Fig 6 19 Fixing bracket ...

Page 149: ...or APS sensor C 1 A4 series APS 1 2 3 C R 1 Take off the original glass P 6 18 A Original glass 2 Remove 6 screws and take off the lens cover Fig 6 20 1 Take off the original glass P 6 18 A Original glass 2 Disconnect 1 connector and remove 1 screw for each APS sensor Take off 5 APS sen sors Fig 6 21 Lens cover ...

Page 150: ...w for each APS sensor Take off 4 APS sen sors Fig 6 22 1 Take off the original glass and front upper cover P 6 18 A Original glass P 2 28 D Front upper cover 2 Move the carriage 1 to the center position Fig 6 23 3 Disconnect the connector of the exposure lamp Note When disconnecting the connector pay attention not to give load to the carriage frame 4 Release the harness from the harness clamp Fig ...

Page 151: ...IO2500c 3500c 3510c SCANNER 6 21 5 Move the carriage 1 to the position where the side of the frame is cut out Fig 6 25 6 Remove 1 screw 7 Lift up the front side of the exposure lamp and take off by sliding it Fig 6 26 Exposure lamp ...

Page 152: ...he lens unit Notes 1 When installing the lens unit fix it while pushing it to the rear direction 2 For adjustment refer to 3 12 2 Lens Unit in the Service Handbook 3 Do not touch 6 screws shown with the arrows when replacing the lens unit 4 Handle the unit with care Do not touch the adjusted area and lens Hold the unit as the right figure Fig 6 27 Fig 6 28 Fig 6 29 Lens unit ...

Page 153: ... and take off the scan motor with the whole bracket Fig 6 31 Notes When installing the scan motor use the belt tension jig spring The procedure is as fol lows 1 Fix the screw A P 6 23 Fig 6 31 2 Temporarily fix the screw B and C P 6 23 Fig 6 31 3 Hook the belt tension jig to the motor bracket and the flame 4 The scan motor is pulled by the belt ten sion jig Fix the screw B and then C at the stoppe...

Page 154: ...of the frame 3 Remove 2 screws and take off the brackets fixing the carriage 1 to the wire Fig 6 33 4 Remove the square seal fixing the lamp har ness to the base Disconnect the connector of the lamp harness from the SLG board Fig 6 34 5 Rotate the carriage 1 in the direction shown in the figure at right not to touch the mirror Then take off the carriage 1 Note When replacing the mirror 1 replace t...

Page 155: ... end and fix securely Fig 6 36 1 Take off the carriage 1 P 6 24 G Carriage 1 2 Disconnect 2 connectors Remove 2 screws and take off the inverter board Fig 6 37 1 Take off the carriage 1 P 6 24 G Carriage 1 2 Attach the wire holder jigs to the pulleys to prevent the wires from loosening Note Refer to 3 12 Adjustment of the Scanner Section in the Service Handbook for the direction of the wire holder...

Page 156: ...eplacing the mirrors 2 and 3 replace the carriage 2 together with mir rors 2 and 3 Mirrors 2 and 3 should not be removed 2 When installing carriage 2 fix the bracket temporarily at the position A Then move it to the direction B push it to the end and fix securely P 6 25 Fig 6 36 Fig 6 40 1 Take off the upper rear cover P 2 35 Q Upper rear cover 2 Disconnect 1 connector Release the latches and take...

Page 157: ...over P 6 19 B Lens cover 2 Disconnect 8 connectors remove 6 screws and take off the SLG board Fig 6 42 1 Take off the upper rear cover P 2 35 Q Upper rear cover 2 Disconnect 1 connector Release the har ness from the harness clamp Remove 2 screws and take off the scanner unit cooling fan Fig 6 43 SLG board Scanner unit cooling fan ...

Page 158: ...e STUDIO2500c 3500c 3510c SCANNER May 2006 TOSHIBA TEC 6 28 ...

Page 159: ...ression expansion black component generation scanner high quality image processing and printer high quality image processing SYS board Black over print pure black pure gray chroma adjustment brightness adjustment and con trast adjustment LGC board Smoothing processing image area control and laser related control Image processing section Writing section Original Original glass Lens Scanning section...

Page 160: ...variance in CCD elements and the light source is performed and the digital signal is output as an image signal from the scanning section Fig 7 2 The image processing section inputs the image signal from the scanning section and applies various image processing on the signal then transmits the output result to the writing section Images are processed by the IMG board SYS board and LGC board in this...

Page 161: ...ner Printer Controller Black over print Pure black Pure gray Chrome adjustment Brightness adjustment Contrast adjustment ACS Color conversion Black component generation High quality image processing Image memory editing Editing processing Rectangular are signal generation Editing processing Gamma correction Gradation processing Compression expansion Scanner high quality image processing Printer hi...

Page 162: ...RGB image data is converted to CMY image data When function ing the scanner it is converted to RGB image data The image data taken in by the scanner represents the intensities of reflection from the three pri mary colors of light Red Green and Blue These RGB values are then color converted to the respective amounts of toners corresponding to the three colors Yellow Magenta and Cyan for printing CM...

Page 163: ...Low pass filter processing This processing removes image electrical noise and decreases moire by performing averaging operation between the image signals of the targeted pixel and those of the neighboring pixels to enhance the reproducibility of original Example Density of the targeted pixel position is X Density of pixel positions at front and back of the tar geted pixel are a and b respectively ...

Page 164: ...ncement is applied between the targeted pixel and the neighboring pixels to eliminate this phenomenon and realize high reproducibility of original Fig 7 6 5 Image memory editing This function performs editing such as enlargement reduction mirror imaging etc by using a line memory Pixel data for one line in the primary scanning direction is stored in the line memory and the memory is renewed at eac...

Page 165: ...adation processing In case of color copying this function switches the type of gradation processing depending on the copy mode A type which selects the printer characteristics giving the priority to resolution such as for text data and another which selects the printer characteristics giving the priority to reproducibility of gradation such as for photographic images In case of black copying this ...

Page 166: ...or of the paper comes out around the black data when out of color regis tration is occurring To prevent this phenomenon this process enables to keep the background color around the black data formed as a part of the text or the graphic object on the printer data Fig 7 7 2 Pure black Pure gray PostScript Pure gray PCL6C This function is to printout the text and graphics formed as black data with bl...

Page 167: ...hing processing Image area control Laser related control 7 5 2 Functions of image processing circuit An image processing ASIC mounted on the LGC board enables the following functions 1 Smoothing processing This function removes jaggy and smooths character outline of images and output them 2 Image area control This function sets the effective image area in horizontal and vertical directions to be o...

Page 168: ...e STUDIO2500c 3500c 3510c IMAGE PROCESSING May 2006 TOSHIBA TEC 7 10 ...

Page 169: ...board LDR then radiated on the drum through the optical elements such as cylinder lenses polygonal mirror and fθ lens The unit must not be disassembled in the field as they are very sensitive to dust and finely adjusted at the factory The polygonal motor in e STUIO3510c is different from the one in e STUDIO2500c 3500c and rotates faster In order to avoid effects by the consequently increased heat ...

Page 170: ... Mirror motor M Mirror motor C H sync signal detection PC board Mirror motor K Polygonal mirror Polygonal motor f lens 2 f lens 1 Pre deflection reflecting mirror Laser driving PC board M Aperture M Laser diode M Fine focus lens M Pre deflection lens Cylinder lens M Laser driving PC board K Aperture K Laser diode K Fine focus lens K Cylinder lens K Laser driving PC board C Aperture C Laser diode C...

Page 171: ...is equipment and radiates an invisible laser beam Since it is not visible be extremely careful when handling the laser optical unit components per forming operations or adjusting the laser beam Also never perform the procedure with other than the specified manuals because you could be exposed to the laser radiation The laser unit is completely sealed with a protective cover As long as only the ope...

Page 172: ... a screwdriver on the laser beam path Remove all reflecting metals such as watches rings etc before starting service When servicing the equipment with the power turned ON be sure not to touch live sections and rotating operating sections Avoid exposing your eyes to laser beam During servicing be sure to check the rating plate and cautionary labels such as Unplug the power cable during service CAUT...

Page 173: ...ygonal mirror Four laser beams emitted from the laser diodes are reflected by this mirror As the polygonal mirror is rotated by the polygonal motor the reflected laser lights moves in sync with the rotation The direction of the move ment is the primary scanning direction of the image One scan is performed on one plane of the polygonal mirror As the polygonal mirror has eight planes eight scans are...

Page 174: ... copies prompting a user to clean the glass Ask a user to perform cleaning when it appears Although the slit glass cleaning pad is not a preventive mainte nance part replace it if it becomes dirty a Uniform velocity scanning Since the polygonal mirror is rotating at a uni form velocity the laser beam reflected from the mirror scans over the drum surface at a uniform angular velocity namely the pit...

Page 175: ...C and K color laser beams a mirror motor is installed to make tilt adjustment for the mirror The parallel correction for the four scanning lines is performed by adjusting the tilt of mirrors in the following manner a A test pattern is written on the transfer belt This is read by the Image position aligning sensors S16 S17 to recognize the error in scanning lines b With the Y color scanning line as...

Page 176: ...fore APC Auto Power Control needs to be performed to maintain a constant optical output Fig 8 8 A block diagram of the semiconductive laser control circuit is shown below The semiconductive laser performs a monitor efficiency regulation a process to control a monitor current for beam emission amount The initial beam emission is adjusted to be approx 5 5 mW 322 µW on the drum surface The voltage of...

Page 177: ...tatus signal PMSNC and then output to the ASIC PMSNC signal moves to a low level only when the rotation status of the motor is constant The ASIC detects the rotation status with this signal and emits a laser beam only when the rotation status is constant Fig 8 10 Conrol signal Signal Function Status High level Low level PMMTR Motor ON signal OFF ON PMCK Refernce clock PMSNC PLL control signal Stop...

Page 178: ...ection of the motor can be switched by changing the output timing of each pulse signal Also the pulse signal is used for each mirror motor of M C and K color in common Selecting the level of the enable signal TILTM TILTC TILTK sends the signal only to the mirror motor to be driven Fig 8 11 Control signal Signal Function Status High level Low level TILT0 1 2 3 Mirror motor phase signal TILTM C K En...

Page 179: ...ASER OPTICAL UNIT 8 11 Relation between enable signal and motor to be driven Not available in the above combination Signal Motor to be driven TILTM TILTC TILTK L H H Mirror motor M H L H Mirror motor C H H L Mirror motor K H H H None No tilt adjustment ...

Page 180: ...ment A Laser optical unit Note Perform step 7 only when the Damp Heater Kit optional is installed 1 Take off the toner bag P 12 11 A Toner bag 2 Take off the used toner motor unit P 12 23 C Used toner motor cover 3 Disconnect 2 connectors of the laser optical unit Fig 8 12 4 Remove 2 screws Fig 8 13 ...

Page 181: ...tes 1 Do not leave fingerprints or stain on the slit glass of the laser optical unit 2 Pay close attention not to make an impact or vibration on the laser optical unit because it is a precise apparatus 3 Place the removed laser optical unit so as not to load on the polygonal motor 4 Do not disassemble the laser optical unit in the field because it is precisely adjusted and very sensitive to dust a...

Page 182: ... installed 1 Take off the paper dust holder P 10 40 Q Paper dust holder 2 Disconnect 1 connector and then take off the laser unit cooling fan Note When installing the laser unit cooling fan face its labeled side down and insert it all the way in Fig 8 16 1 Open the board case P 2 43 K Board case 2 Disconnect 1 connector of the Damp Heater Kit optional Fig 8 17 Laser unit cooling fan ...

Page 183: ... Discharge LED ERS Y ERS M ERS C ERS K 5 Disconnect 2 connectors and remove 2 screws Then take off the front hinge cover by releasing 8 hooks Fig 8 18 6 Take off the left lower cover P 2 31 I Left lower cover 7 Disconnect 1 connector Fig 8 19 8 Remove 7 screws and take off the metal plate on the left side Note Check printed images after assembling the unit Fig 8 20 Front hinge cover Plate ...

Page 184: ...ut to the exit side Fig 8 21 1 Take off the shutter unit P 8 14 C Shutter unit 2 Disconnect 1 connector remove 3 screws and take off the shutter motor with the bracket Fig 8 22 3 Remove the E ring Then remove 1 gear 1 spring and 1 polyslider Note When assembling the unit be sure to install the polyslider Fig 8 23 Shutter unit Shutter motor Gear Spring Polyslider ...

Page 185: ...t optional is installed 4 Remove 2 screws and take off the shutter motor Fig 8 24 1 Take off the shutter unit P 8 14 C Shutter unit 2 Remove 2 screws and then take off the Damp Heater Kit optional Fig 8 25 3 Remove 1 clip and then slide the actuator to the rear side Note Be sure not to lose the removed pin Fig 8 26 Shutter motor Damp heater Clip Actuator Pin ...

Page 186: ...isconnect 1 connector release the latch and take off the shutter status detection sen sor Fig 8 27 1 Open the front door Then take off the slit glass cleaner 2 Press 2 latches to the inner side and then remove the slit glass cleaning pad Fig 8 28 Shutter status detection sensor Slit glass cleaning pad ...

Page 187: ... Transmitting releasing the drive to the drum Y M and C Ch 11 Shutter motor M12 Slit glass protective shutter Ch 8 Polygonal motor M13 Polygonal mirror Ch 8 Mirror motor M14 M16 Laser unit third reflecting mirrors for M C and K Ch 8 Fuser motor M17 Fuser unit Fuser roller Pressure roller and Fuser roller Bridge unit option Ch 15 Exit motor M18 Exit roller Ch 15 Registration motor M19 Registration ...

Page 188: ...e STUDIO2500c 3500c 3510c DRIVE SYSTEM May 2006 TOSHIBA TEC 9 2 ...

Page 189: ...o Name No Name 1 Bypass feed roller 14 Bypass feed sensor S41 2 Bypass separation roller 15 Paper width detection PC board SFB 3 Bypass pickup roller 16 1st drawer feed sensor S30 4 1st drawer feed roller 17 1st drawer tray up sensor S31 5 1st drawer separation roller 18 1st drawer empty sensor S32 6 1st drawer pickup roller 19 1st drawer paper stock sensor S33 7 1st 2nd drawer transport roller 20...

Page 190: ...r stock sensor S33 S37 1st 2nd drawer transport clutch High speed CLT1 CLT5 1st 2nd drawer transport clutch Low speed CLT2 CLT4 1st 2nd drawer transport roller 1st 2nd drawer feed sensor S30 S34 1st 2nd drawer detection switch SW5 SW6 Bypass unit Bypass pickup roller PM parts Bypass feed roller PM parts Bypass separation roller PM parts Bypass paper sensor S40 Bypass feed sensor S41 Bypass pickup ...

Page 191: ...0 This sensor detects if paper is set in the bypass tray If it is bypass feeding always comes before drawer feeding 7 Empty sensor 1st drawer S32 2nd drawer S36 This is a transmissive type sensor and detects the availability of paper in the drawer by using an actuator When there is no paper in the drawer the actuator blocks the light path of the sensor and the sensor determines that there is no pa...

Page 192: ...r the drawer transport clutch High speed is turned OFF and this clutch is turned ON Then the transport roller rotates at low speed to transport the paper 16 Feed transport motor M20 This motor drives the pickup rollers feed rollers and transport rollers of the drawers and bypass tray 17 Registration motor M19 This motor drives the registration roller Normal rotation of the motor rotates the regist...

Page 193: ... transport motor M20 1st drawer transport clutch CLT1 2 2nd drawer transport clutch CLT4 5 1st drawer feed clutch CLT3 2nd drawer feed clutch CLT6 Registration motor M19 Bypass feed clutch CLT8 1st transport roller 2nd transport roller 1st drawer feed roller 1st drawer pickup roller 2nd drawer feed roller 2nd drawer pickup roller Registration roller Bypass feed roller Bypass pickup roller Tray up ...

Page 194: ...hen brought down with its own weight When the bypass pickup solenoid SOL1 is turned OFF the pickup arm is brought up by the spring force The driving force transmitted through the bypass feed clutch CLT8 is transmitted to the bypass feed roller through the shaft and then to the bypass pickup roller through the timing belt The roller is rotated by this driving force Fig 10 2 Bypass pickup solenoid S...

Page 195: ... 4 3 Operation of drawer pickup roller When the drawer is inserted the protrusion at the rear side of the drawer moves up the lever a to the direction of A The pickup roller and roller holder are then lowered by it s own weight Fig 10 3 A Insertion direction Lever a Pickup roller ...

Page 196: ...heet is transported by the feed roller in the direction of the black arrow Fig 10 4 Example When only one sheet enters between the rollers Since the transporting force of the feed roller is greater than the braking force of the separation roller the separation roller follows the feed roller mak ing the sheet go forward to the registration roller When two sheets enter between the rollers at the sam...

Page 197: ...aper on the transport path when the equipment is turned ON it is determined that a paper jam has occurred and no operation is enabled until the paper is removed B Ready status 1 After the tray is moved up and availability of paper is checked as described above the equipment enters the ready status At ready status the tray remains at raised position 2 When a drawer is inserted or removed at ready s...

Page 198: ...he registration motor M19 and transport clutch low speed CLT2 4 are turned ON and the paper is transported to the 2nd transfer position D 2 1st drawer The feed clutch CLT3 and the transport clutch high speed CLT1 are turned ON and the pickup roller feed roller and transport roller are rotated to start feeding paper Passing of the leading edge of the paper turns ON the 1st drawer feed sensor S30 th...

Page 199: ...on the control signal CS1TUMA 0C CS1TUMB 1C output from the ASIC The motor operates the rotation stop or brake according to the status of these drive signals Fig 10 6 Control signal CW Clockwise rotation CCW Counter clockwise rotation viewing from the axis Signal Motor status ASIC output Motor driver output CS1TUMA 0C CS1TUMB 1C CS1TUMA 0A CS1TUMB 1A L L OFF high impedance Stop L H L H CW Tray up ...

Page 200: ...he reference clock RGMCK and output only when the enable signal RGMEN is a high level Also the rotation speed or direction of the motor can be switched by changing the output timing of each pulse signal Fig 10 7 Control signal CW Clockwise rotation CCW Counter clockwise rotation viewing from the axis Signal Function Status High level Low level RGMCK Reference clock RGMEN Enable signal ON OFF RGMCW...

Page 201: ...r or OHP sheet is used the clock frequency of FDMCK signal is changed to reduce the motor speed in half and lower the paper transport speed so that the fusibility of toner is improved When the rotation speed of the motor is set to a low speed FDMGA signal is changed to a low level to suppress the rotation fluctuation of the motor Signal Function Status High level Low level FDMON Motor ON signal OF...

Page 202: ... right front hinge cover P 2 33 N Right front hinge cover 2 Take off the right rear hinge cover P 2 32 L Right rear hinge cover 3 Remove 1 screw of ground wires Discon nect 1 connector and release the harnesses from 1 harness clamps Fig 10 9 4 Remove 1 screw and take off the bypass feed rear cover Fig 10 10 Connector Ground wire Bypass feed rear cover ...

Page 203: ...e bypass unit make sure that the ADU is closed in advance since the bypass unit occasionally does not slide smoothly Fig 10 11 1 Take off the bypass unit P 10 14 A 1 Bypass unit 2 Disconnect 1 connector and release the har ness from the harness clamp Fig 10 12 3 Release the spring from the hook Note Release it while the tray is standing so as to weaken the tension of the spring Fig 10 13 Bypass un...

Page 204: ...screws and then take off the hinge by sliding it Fig 10 14 5 Take off the tray from the bypass unit Fig 10 15 1 Take off the hinge assembly P 10 15 A 2 Hinge assembly 2 Remove 3 screws release 4 latches and 3 hooks and take off bypass tray upper cover Fig 10 16 Hinge assembly Tray Bypass tray upper cover ...

Page 205: ...the plate spring And remove 1 screw on the tray side and take off the bracket Fig 10 17 Note Install the bracket so that its pointer is placed at the same position as before Fig 10 18 4 Disconnect 1 connector remove 1 screw and take off the SFB board Fig 10 19 Plate spring Bracket Pointer SFB board ...

Page 206: ... guide 1 Take off the bypass unit P 10 14 A 1 Bypass unit 2 Remove 1 screw and slide the bypass feed upper cover to take it off Fig 10 20 1 Take off the bypass feed upper cover P 10 18 A 4 Bypass feed upper cover 2 Remove 4 screws and take off the bypass upper guide Fig 10 21 Bypass feed upper cover Bypass upper guide ...

Page 207: ...4 Bypass feed upper cover 2 Remove 4 screws and take off the upper plate Fig 10 22 3 Remove 1 spring Disconnect 1 connector and take off the bypass pickup solenoid with the solenoid arm Fig 10 23 1 Take off the bypass feed upper cover P 10 18 A 4 Bypass feed upper cover 2 Remove 4 screws and take off the upper plate Fig 10 24 Upper plate Bypass pickup solenoid Solenoid arm Upper plate ...

Page 208: ... shaft and take off the bypass pickup roller Notes Make sure the following items when assem bling the bypass pickup roller 1 Set the timing belt to the pulley securely 2 Do not put the wrong position when set ting the timing belt 3 Be sure to insert the clip into the groove of shaft 4 Check that there is no stain such as oil on the surface of timing belt the pulley and the roller 5 Install the byp...

Page 209: ... pulley securely 2 Do not put the wrong position when set ting the timing belt 3 Be sure to insert the clip into the groove of shaft 4 Check that there is no stain such as oil on the surface of timing belt the pulley and the roller 5 Install the bypass pickup roller and the bypass feed roller in the correct direction Fig 10 28 1 Take off the bypass upper guide P 10 18 A 5 Bypass upper guide 2 Remo...

Page 210: ...se the har ness clamp Fig 10 30 3 Remove the E ring and the bushing 4 Remove 3 screws and take off the bracket 5 Remove the bushing and the bypass feed clutch Note Match the protruding portion of the clutch and bracket for assembling Fig 10 31 1 Take off the bypass unit P 10 14 A 1 Bypass unit 2 Remove 3 screws and take off the lower plate Fig 10 32 Connector Harness clamp Bypass feed clutch Brack...

Page 211: ...em bly Fig 10 33 4 Detach the cover the arbor and the clutch spring from the shaft and then take off the bypass separation roller Fig 10 34 1 Take off the bypass unit P 10 14 A 1 Bypass unit 2 Remove 3 screws and take off the lower plate Fig 10 35 Bypass separation roller assembly Shaft Bypass separation roller Cover Clutch spring Arbor Lower plate ...

Page 212: ...ig 10 36 4 Release the latch to take off the bypass feed sensor Note Be careful not to come off the sensor arm and the sensor spring after taking off the sensor Fig 10 37 1 Take off the upper and lower drawers 2 Remove 1 screw and take off the drawer feeding unit by sliding it to the front side Fig 10 38 Sensor plate Connector Sensor spring Sensor arm Bypass feed sensor Drawer feeding unit ...

Page 213: ... 2 Disconnect the connector and release the latch to take off the tray up sensor 3 Disconnect the connector and release the latch to take off the empty sensor Fig 10 39 1 Take off the drawer feeding unit P 10 24 B 1 Drawer feeding unit 2 Pull up the paper stock sensor arm 3 Disconnect the connector and release the latch to take off the paper stock sensor Fig 10 40 Empty sensor Tray up sensor Paper...

Page 214: ...rew and take off the separation roller holder Fig 10 41 3 Detach the lever from the holder and take off the separation roller with the shaft Fig 10 42 4 Detach the cover the arbor and the clutch spring from the shaft and then takeoff the separation roller Fig 10 43 Separation roller holder Lever Holder Separation roller Arbor Arbor Cover Clutch spring Shaft Separation roller ...

Page 215: ...emove the clip and take off the feed roller Fig 10 44 1 Take off the drawer feeding unit P 10 24 B 1 Drawer feeding unit 2 Remove the pickup roller assembly from the pickup arms and take off the belt Fig 10 45 3 Remove 3 E rings pulley one way clutch and take off the pickup roller Fig 10 46 Clip Feed roller Pickup roller assembly Belt E ring E ring Pulley One way clutch Pickup roller ...

Page 216: ... feeding unit P 10 24 B 1 Drawer feeding unit 2 Disconnect the connector and release the harness from the harness clamp Fig 10 47 3 Remove 2 screws and take off the clutch with the bracket Note Match the protruding portion of clutch with the position shown in the figure for assem bling Fig 10 48 Connector Bushing Clutch bracket ...

Page 217: ...cket P 2 42 I FIL board 3 Disconnect 1 connector Remove 4 screws and take off the tray drive unit Fig 10 49 4 Place the unit with its coupling up and release 6 latches to take off the cover Note Be careful in taking off the cover because there is a spring in the tray drive unit Fig 10 50 5 Take off the tray up motor Fig 10 51 Tray drive unit Cover Coupling Coupling Tray up motor ...

Page 218: ...e off the filter bracket P 2 42 I FIL board 3 Disconnect 1 connector Remove 4 screws and take off the tray drive unit with the bracket Fig 10 53 1 Take off the tray drive unit P 10 30 C 2 Tray drive unit 2 Disconnect 1 connector and remove 1 clip to take off the 2nd drawer transport clutch low speed Note When assembling the clutch match the pro truded portion of the clutch with the position shown ...

Page 219: ...off the whole set of the clutch 3 Take off the bracket shaft gear and 2 bush ings Note When assembling the clutch match the pro truded portion of the clutch with the position shown in the figure Fig 10 55 1 Take off the tray drive unit P 10 30 C 2 Tray drive unit 2 Disconnect 1 connector each from both switches Then release 2 latches to take off the switches by pushing them out toward the drawer F...

Page 220: ...nit TRU 4 Disconnect 1 connector and then release the harness from 2 hooks 5 Remove 3 screws and then take off the paper feed guide assembly by sliding it to the rear side slightly Note When installing the assembly be sure not to deform the Mylar on the transport path Fig 10 57 1 Take off the paper feed guide assembly P 10 32 G Paper feed guide assembly 2 Remove the seal and disconnect 1 connector...

Page 221: ...aper feed guide assembly 2 Remove 2 screws and then take off the paper feed guide A by sliding it Fig 10 59 3 Disconnect 1 connector and then release 2 latches to take off the side cover switch Fig 10 60 1 Perform the output check 03 239 to set the plunger at the receded position before taking off the registration guide Fig 10 61 Paper feed guide A Side cover switch Plunger ...

Page 222: ...3 Take off each cover of the both sides of the registration guide Fig 10 62 4 Remove each spring from the both front and rear hooks Then remove the cam and wire Fig 10 63 5 Disconnect 1 connector and remove 3 screws Then take off the registration guide Note The outer 2 of these 3 screws are stepped screws Fig 10 64 Cover Cam Spring Registration guide ...

Page 223: ...ct 1 connector and remove 1 screw Then take off the registration sensor with its bracket Fig 10 65 3 Remove the seal and then take off the regis tration sensor Fig 10 66 1 Take off the registration guide P 10 33 J Registration guide 2 Disconnect 1 connector and remove 1 screw Then take off the 1st drawer feed sensor with its bracket Fig 10 67 Registration sensor Registration sensor 1st drawer feed...

Page 224: ...e 1st drawer feed sensor Fig 10 68 1 Open the 2nd transfer unit 2 Remove 1 screw on the front side and then remove the holder and spring 3 Remove 1 screw on the rear side and then remove the holder and spring Fig 10 69 4 Take off the registration roller rubber with its holder Fig 10 70 1st drawer feed sensor Holder Registration roller Rubber ...

Page 225: ...oard case P 2 43 K Board case 2 Disconnect 1 connector and remove 4 screws Then take off the registration motor unit Note Be sure not to drop the bushing Fig 10 72 1 Open the board case P 2 43 K Board case 2 Take off the registration motor unit P 10 37 N Registration motor unit 3 Remove 3 screws to take off the plate Fig 10 73 Registration roller Rubber Gear Plate Bushing Bushing Registration moto...

Page 226: ...ce the registration motor with the damper and the bracket installed Fig 10 74 Note Never attempt to loosen 4 screws with lock paint Fig 10 75 1 Take off the registration motor unit P 10 37 N Registration motor unit 2 Take off the registration guide P 10 33 J Registration guide 3 Take off the middle guide Fig 10 76 Registration motor Screw Screw Screw Middle guide ...

Page 227: ...e the clip on the rear side of the regis tration roller metal Then remove the gear and parallel pin Note Be sure not to drop the parallel pin Fig 10 77 5 Remove 2 screws and then take off the duct Fig 10 78 6 Remove 1 screw and then take off the cover Fig 10 79 Gear Pin Clip Duct Cover ...

Page 228: ...de and then take it off from the front side Fig 10 80 1 Take off the registration roller metal P 10 38 P Registration roller Metal 2 Remove 2 screws and then take off the paper dust holder Fig 10 81 1 Open the board case P 2 43 K Board case 2 Disconnect 1 connector and remove 1 clip to take off the 1st drawer transport clutch Low speed Note When assembling the clutch match the pro truded portion o...

Page 229: ...s to take off the feed transport motor Fig 10 83 1 Take off the feed transport motor P 10 41 S Feed transport motor M20 2 Take off the 1st drawer transport clutch Low speed P 10 40 R 1st drawer transport clutch Low speed CLT2 3 Disconnect 1 connector and then release the harness out of the clamp 4 Remove 4 screws and then take off the feed transport gear unit Fig 10 84 Feed transport motor Feed tr...

Page 230: ...its bracket 3 Remove the shaft and gear from the 1st drawer transport clutch High speed Fig 10 85 1 Take off the registration guide P 10 33 J Registration guide 2 Take off the feed transport motor P 10 41 S Feed transport motor M20 3 Remove 2 clips to move 2 bushings to the inside 4 Lift up the 1st drawer transport roller and take it off to the rear side 5 Remove 1 E ring 1 gear and 2 bushings fro...

Page 231: ...Take off the tray drive unit P 10 30 C 2 Tray drive unit 3 Take off the 2nd drawer transport clutch low speed P 10 30 D 2nd drawer transport clutch Low speed CLT4 4 Remove 1 clip and then remove the gear and parallel pin Fig 10 87 5 Remove 2 clips and then take off the 2nd drawer transport roller by moving it to the rear side slightly Fig 10 88 Gear Pin Clip 2nd drawer transport roller ...

Page 232: ...e STUDIO2500c 3500c 3510c PAPER FEEDING SYSTEM May 2006 TOSHIBA TEC 10 44 ...

Page 233: ...e installed on the ozone duct This chapter explains about the process unit and parts around this unit which are provided for image formation Except the developer unit which is one of units composing the process unit is described in chapter 12 in detail Fig 11 1 Fig 11 2 Drum Y Drum M Drum C Drum K Drum cleaner unit Y Process unit Y Drum cleaner unit M Process unit M Toner bag Temperature Humidity ...

Page 234: ...overy auger Main charger unit Main charger grid PM parts Needle electrode PM parts Needle electrode cleaner PM parts Developer unit Ch 12 Drum thermistor Y K THM1 THM2 EPU board EPU Y M C K Ch 12 Discharge LED ERS Y M C K Temperature Humidity sensor S12 Ozone filter 1 2 PM parts Ozone exhaust fan M24 High voltage transformer Drum motor M10 Drum switching motor M11 Toner bag Toner bag full detectio...

Page 235: ...charge is evenly applied onto the drum surface by the corona discharge and this grid In addition a cleaner is installed to clean up the dust attached on the needle electrode Needle electrode The needle electrode has aligned needles and their points perform the corona discharge These points electrodes discharge toward the drum in one direction to realize the more efficient discharging comparing to ...

Page 236: ...on of drive to the Y M C drums When the motor rotates normally or reversely the gear of the motor moves the rack to shift the guides And this movement of the guides controls the transmission of the drive by engaging and disengaging gears which transmit the drive to the Y M C drums Additionally the drum switching sensor detects the phase of the guide to control the drum switching motor and checks w...

Page 237: ... the input 24V voltage 24VD3 Fig 11 3 High voltage transformer HVTMVRY M C K HVTDVRY M C K HVTTR1VRY M C K HVTMC K HVTSTS HVTCLK HVTTR2VR HVTDDCC K HVTDACC K HVTTR1Y M C K HVTTR2 HVTECC K IC39 NVRAM IC41 ASIC IC76 D A converter IC53 Engine CPU LGC board IC56 ASIC D A converter Digital data Analog data Reference voltage Analog data Reference voltage Adjustment value 24VD3 24VD3 1st transfer bias Y ...

Page 238: ... 1st transfer bias and 2nd transfer bias Each output of the high voltage transformer can be changed linearly by changing these reference voltages The output procedure of the reference voltages is shown below The adjusted values of the main charger bias developer bias and transfer bias in the NVRAM are output to the ASIC The data of the reference voltage is output from the ASIC to the D A converter...

Page 239: ...verts the input voltage from the drum thermistor into a digital signal by means of the A D converter on the LGC board The drum thermistor is a device whose resistance value is smaller when the temperature is higher Therefore when the temperature becomes higher the input voltage to the A D converter becomes lower Fig 11 4 IC53 Engine CPU Drum thermistor Y LGC board 3 3VB SG YDRTH Drum thermistor K ...

Page 240: ...ence clock DMCK and output only when the enable signal DMEN is a high level Also the rotation speed or direction of the motor can be switched by changing the output timing of each pulse signal Fig 11 5 Control signal CW Clockwise rotation CCW Counter clockwise rotation viewing from the axis Signal Function Status High level Low level DMCK Reference clock DMEN Enable signal ON OFF DMDIR Rotation di...

Page 241: ... CKMMA 0A CKMMB 1A to the motor based on the control signal CKMMA 0C CKMMB 1C output from the ASIC The motor operates the rotation stop or brake according to the status of these drive signals Fig 11 6 Control signal CW Clockwise rotation CCW Counter clockwise rotation viewing from the axis Signal Motor status ASIC output Motor driver output CKMMA 0C CKMMB 1C CKMMA 0A CKMMB 1A L L OFF high impedanc...

Page 242: ...e B part and take off each pro cess unit of EPU Y EPU M EPU C and EPU K Notes Be sure not to touch spit or scratch on the drum surface Check if the shutter of the toner supply opening on the removed process unit is closed Avoid a direct sunlight onto the drum Move it to a dark place as soon as it is taken off Fig 11 8 Note When installing wipe out toner on the drawer connector of the equipment bec...

Page 243: ...rs each for the process units EPU Y and EPU K and 1 connector each for EPU M and EPU C Notes Be sure to place the process unit EPU in the correct position as shown in Figure to avoid the damage on the drum When installing be sure not to have har nesses being loosened Fig 11 11 5 Turn the process unit EPU to place with the used toner exit hole comes bottom side as shown in the Figure 6 Remove 2 scr...

Page 244: ...ont retainer Note Be sure not to lose the bearing installed on the front retainer Fig 11 14 3 Release 1 latch on the rear side of the devel oper unit to open the cleaner unit in the direction of the arrow Slide the cleaning unit to the rear side to separate it from the devel oper unit Notes Be sure not to touch spit or scratch on the drum surface Avoid a direct sunlight onto the drum Move it to a ...

Page 245: ...a direct sunlight onto the drum Move it to a dark place as soon as it is taken off Fig 11 16 1 Take off the main charger assembly P 11 13 C 2 Main charger assembly 2 Remove the main charger cleaner rod from the guide 3 Turn the main charger cleaner rod for 90 degrees to take it off Fig 11 17 Note Be sure to insert the main charger cleaner rod all the way in before turning it 90 degrees otherwise t...

Page 246: ...rger cleaner P 11 13 C 3 Main charger cleaner 2 Lift it up the arm of the front terminal and then take off the main charger grid Notes Do not touch the mesh area of the grid There are 2 holes on the rear side of the main charger grid for determining which is the front or back surface Be sure to place the grid so that the 2 holes come as shown in the figure Fig 11 20 1 Take off the main charger gri...

Page 247: ...ectly with bare hands Fig 11 22 1 Take off the main charger assembly P 11 13 C 2 Main charger assembly 2 Release the 2 latches and then take off the bushing Fig 11 23 3 Pull out the shaft from the rear side then hold the gear part of the drum and take it off Notes Be sure not to lose the sleeve which will remain on the shaft or rear side of the drum Be sure not to lose the bearing installed on the...

Page 248: ...iner installed on the drum shaft has been taken off be sure to install it while aligning the direction of the ribs of the cou pling with the pin on the drum shaft Fig 11 25 1 Install the drum to the cleaner case with its front side boss aligned with the seal on the case Be careful not to have the seal on the rear side come off of the drum Fig 11 26 Fig 11 27 Retainer Rib Coupling Pin Drum shaft Dr...

Page 249: ... shaft fully in to engage the groove and pin with the sleeve Fig 11 29 Note Be sure to align the position before inserting the shaft If the drum or drum shaft is rotated with the sleeve engaged with the groove and pin sleeve may be deformed 4 Install the bearing on the front side of the drum shaft 1 Take off the Drum P 11 15 C 6 Drum 2 Remove 3 screws and take off the drum cleaning blade Note Be s...

Page 250: ...eck if there is no gap between the blade and pad on both ends If there is or when the pads put pressure to the cleaning blade reattach the pads on the position shown in the figure by slightly pushing them to the direction of the arrows Fig 11 31 1 Take off the corresponding process unit and then take off the developer unit P 11 10 A Process unit EPU P 11 12 C 1 Cleaning unit Developer unit 2 Remov...

Page 251: ...ocess unit EPU P 11 10 A Process unit EPU 2 Disconnect 1 relay connector from the dis charge LED Remove 1 screw and take off the duct Notes When installing the duct hang the 1 hook of the duct on the hole of the frame When installing the duct be sure to hold the harness between the duct and main frame in order not to have the duct lose contact with the main frame Since the actuator is installed on...

Page 252: ...e the latch and take off the needle electrode cleaner detection sensor Fig 11 35 1 Take off the ozone exhaust duct P 12 30 N Ozone exhaust duct 2 Remove 1 screw on the right side of the drum drive unit Fig 11 36 3 Open the board case P 2 43 K Board case 4 Release the harness from the 3 harness clamps 5 Disconnect the 1 connector and 2 relay con nectors 6 Remove 3 screws and take off the drum drive...

Page 253: ...iscard the dumper attached to the new motor and install it to the existing dumper on the frame instead H Drum switching motor M11 1 Take off the Drum drive unit P 11 20 F Drum drive unit 2 Remove 2 screws and take off the drum motor Fig 11 38 1 Take off the Drum drive unit P 11 20 F Drum drive unit 2 Remove 1 screw and take off the drum switching motor Fig 11 39 Drum drive unit Drum motor Drum swi...

Page 254: ...4 springs Note When installing take care of the direction of the spring Fig 11 40 Note When installing the coupling rotate the gear until the mark appears and then align the mark with the narrower rib of the coupling Fig 11 41 4 Remove 4 screws and then take off the plate Notes When installing take care of the direction of the spring Be careful not to damage the gear of the drum drive unit Fig 11 ...

Page 255: ...t with the mark on the gear aligned within the area of the punched mark on the frame Fig 11 43 5 Remove 2 screws and then take off the sen sor bracket Fig 11 44 6 Disconnect 1 connector and then release the latch to take off the drum switching detection sensor Fig 11 45 Mark Punched mark Punched mark Sensor bracket Connector Drum switching detection sensor ...

Page 256: ...e STUDIO2500c 3500c 3510c PROCESS UNIT RELATED SECTION May 2006 TOSHIBA TEC 11 24 ...

Page 257: ...ier and is filled in the devel oper unit of each color The toner is charged to a negative polarity and the carrier to a positive polarity due to the friction with each other caused by mixing in the developer unit The charged toner is supplied to the photoconductive drum surface by means of a magnetic roller allowing it to adhere to the areas on the drum surface where the potential is lower than th...

Page 258: ...eaner unit Ch 11 Main charger unit Ch 11 Developer unit Developer material PM parts Mixer Developer sleeve Mag netic roller Doctor blade Auto toner sensor S22 23 24 25 EPU board EPU Y M C K Developer unit motor M9 Mixer 1 Auto toner sensor Developer unit Mixer 2 Main charger Developer sleve Magnet roller Doctor blade Drum ...

Page 259: ...operly 5 Auto toner sensor S22 23 24 25 To print out a precise image the proportion toner density ratio of the carrier and the toner in the developer material needs to be always constant The magnetic bridge circuit in the black auto toner sensor detects the toner ratio in the developer material This sensor supplies the toner from the toner cartridge 6 EPU board EPU Y M C K The data whether the EPU...

Page 260: ...to monitor the edge of the toner bag When the toner bag becomes full of used toner and the accumulated used toner shields the sensor path this sensor detects that the toner bag is full When either the used toner motor lock detection sensor S14 or the toner bag full detection sensor S13 is turned ON the toner bag is judged as full of used toner ...

Page 261: ...ing to the result The temperature humidity detection circuit is composed as shown in the figure below It converts the voltage of each analog signal output from the temperature humidity sensor into a digital signal by means of the A D converter on the LGC board The lower the temperature and the higher the humidity the higher the voltage of each analog signal output from the temperature humidity sen...

Page 262: ...r supply auger in each toner cartridge Fig 12 4 Control signal Signal Function Status High level Low level YTNMT Toner motor Y ON signal Stop Rotate MTNMT Toner motor M ON signal CTNMT Toner motor C ON signal KTNMT Toner motor K ON signal IC56 ASIC YTNMT 24VD3 5VSW PG Q27 Q402 Toner motor Y LGC board F9 MTNMT 24VD3 5VSW PG Q28 Q403 Toner motor M F10 CTNMT 24VD3 5VSW PG Q29 Q404 Toner motor C F11 K...

Page 263: ... motor is a DC brush motor driven by the control signal output from the ASIC on the LGC board and rotates the mixing paddle in the toner bag Fig 12 5 Control signal Signal Function Status High level Low level TNMXMT Used toner motor ON signal Stop Rotate IC56 ASIC TNMXMT 24VD3 5VSW PG IC67 Used toner motor LGC board 24VD3 F7 ...

Page 264: ... developer material constant Control panel Displays a status that the toner cartridge is nearly empty Toner supply section Toner is supplied from the toner cartridge to the developer unit by the toner supply motor in this sec tion Fig 12 6 Toner supply section Y Toner supply section M Toner supply section C Toner Developer material Auto toner sensor Toner cartridge Developer unit Temperature humid...

Page 265: ... the following phases the toner density is kept constant Toner is consumed Toner density decreases Output change of the auto toner sensor is detected depending on the humidity Drives toner motor Supplies toner to the developer unit from the toner cartridge Toner empty detection clear function Detects toner being empty in the toner cartridge Drives toner motor Output of the auto toner sensor is not...

Page 266: ... high frequency output from the detection winding to a DC signal auto toner output ATSN Fig 12 7 When the toner density is low Toner ratio to the carrier in the developer material decreased Magnetic resistance decreased Detection output increased Auto toner output ATSN increased When the toner density is high Toner ratio to the carrier in the developer material increased Magnetic resistance increa...

Page 267: ... Developer unit B 2 Developer material 1 Open the front cover 2 Pull out the toner bag straight toward you Fig 12 8 1 Take off the Developer unit P 11 12 C 1 Cleaning unit Developer unit 2 Lift up the latch on the front side of the upper cover as shown in the figure A and release it by pulling the toner supply section in the direction shown in the figure B Fig 12 9 Toner bag A B Toner supply secti...

Page 268: ...figure C to release the latch shown in the figure D Fig 12 10 4 Insert the flat head screwdriver between the latch and the frame on the rear side of the upper cover as shown in the figure E and release it by pulling down the screwdriver in the direction of the arrow in the figure to make a gap between the latch and the frame The latch shown in the figure F is also released accordingly Fig 12 11 5 ...

Page 269: ...eve is hard to come off use a brush jig to clean it off 4407915710 BRUSH 33 Fig 12 13 7 Shake the developer bottle and attach the nozzle to it 8 Fill up the mixer section under the developer sleeve with the developer Fig 12 14 9 Rotate the knob in the direction described in the figure until the developer adheres on the surface of the developer sleeve evenly Fig 12 15 Developer sleeve Mixer Develop...

Page 270: ...o that the developer material is moved to the front side of the mixer section under the developer sleeve Fig 12 16 11 Fill up the mixer section under the developer sleeve with the developer again Fig 12 17 12 Fill the other mixer section with all the remained toner Fig 12 18 Developer sleeve Developer material Mixer ...

Page 271: ...nt of the upper cover indicated in the figure Fig 12 19 13 Fit the protrusions on the upper cover in the 6 concaves on the developer unit Press each 2 portions on the front and rear side indicated by arrows to lock 4 latches while pushing the protrusions on the upper cover to the 6 concaves to fit them securely Fig 12 20 Fig 12 21 Connecting point of upper cover Upper cover Protrusion Hole Rear si...

Page 272: ...pper cover Note After the installation check that all the protru sions and latches are fitted and locked securely Fig 12 22 1 Discharge the developer material P 12 11 B 2 Developer material 2 Remove the urethan seal both front and rear sides Fig 12 23 Fig 12 24 Latch Front side urethan seal Front side urethan seal Front side Rear side urethan seal Rear side urethan seal Rear side ...

Page 273: ...ve 2 screws and take off the doctor blade Fig 12 25 Note When the urethan seal are being attached attach them on the position shown in the fig ure by slightly pushing it to the direction of the arrow Fig 12 26 Fig 12 27 Doctor blade Front side urethan seal Rear side urethan seal ...

Page 274: ...PU M Process unit EPU C EPU PC board EPU C Process unit EPU K EPU PC board EPU K 1 Take off the corresponding the process unit EPU and then take off the process cover P 11 10 A Process unit EPU P 11 11 B Process cover 2 Release the latch and then take off the EPU connector cover Fig 12 28 3 Disconnect the connector Fig 12 29 4 Release the latch and then take off the EPU PC board Fig 12 30 EPU conn...

Page 275: ...ensor S24 Process unit EPU K Auto toner sensor S25 1 Take off the corresponding the process unit EPU and then take off the developer unit to remove the developer material out of the unit P 11 10 A Process unit EPU P 11 12 C 1 Cleaning unit Developer unit P 12 11 B 2 Developer material 2 Disconnect the connector Fig 12 31 3 Hold the locking part to lift it up and then turn the auto toner sensor cou...

Page 276: ...e scale previously recorded when reassembling Fig 12 33 3 Release the 3 latches and take off the gear holder Note When installing the developer sleeve match the positions of the idler gear shaft and the hole of the gear holder Fig 12 34 4 Remove the idler shaft and 2 idler gears and then remove the parts installed on the devel oper sleeve shaft in order of the C ring gear developer guide and beari...

Page 277: ...driver and such 2 Push in a new oil seal parallel to the frame bushing and so on with paying attention to its direction as shown y the figure at right 3 Spread the grease Alvania No 2 about 2 ricegrain s amount all around the inside diameter Wipe off the grease which has run off to the inner side of the oil seal Fig 12 37 1 Discharge the developer material P 12 11 B 2 Developer material 2 Rear sid...

Page 278: ...he hole of the gear holder Fig 12 39 4 Remove 1 clip and take off the bushing and the spring 5 Remove 1 clip and take off the gear 6 Release the 1 latch and take off the gear Fig 12 40 7 Front side Remove 2 clips and take off the 2 bushings and the front bushing holder Fig 12 41 Idler gear shaft Gear holder Latch Latch Latch Clip Clip Bushing Spring Gear Gear Clip Bushing Bushing Front bushing hol...

Page 279: ...nt side Fig 12 42 1 Open the front cover and take out the toner bag P 12 11 A Toner bag 2 Remove 2 screws and take off the duct Fig 12 43 3 Remove 1 screw and take off the stopper 4 Disconnect 2 relay connectors and remove 1 screw Then take off the used toner motor cover Fig 12 44 Mixer Duct Relay connector Stopper Used toner motor cover ...

Page 280: ...Disconnect the 1 con nector and take off the temperature humid ity sensor Fig 12 45 1 Take off the used toner motor P 12 23 C Used toner motor cover 2 Remove the seal Release the latch and then take off the toner bag full detection sen sor Fig 12 46 1 Take off the used toner motor P 12 23 C Used toner motor cover 2 Remove 1 screw and take off the sensor cover Fig 12 47 Temperature humidity sensor ...

Page 281: ...oner motor lock detection sensor Fig 12 49 1 Take off the toner bag full detection sensor and used toner motor lock detection sensor P 12 24 E Toner bag full detection sen sor S13 P 12 24 F Used toner motor lock detec tion sensor S14 2 Remove 1 screw Disconnect 1 relay connec tor and take off the used toner motor bracket Fig 12 50 Sensor bracket Bushing Bushing Actuator Connector Gear Used toner m...

Page 282: ...P 2 41 G Switching regulator 2 Open the board case P 2 43 K Board case 3 Remove 2 screws Disconnect the 1 connec tor and take off the developer unit motor Fig 12 52 1 Take off the switching regulator and drum drive unit P 2 41 G Switching regulator P 11 20 F Drum drive unit 2 Remove 1 screw on the right side of the developer drive unit Fig 12 53 Used toner motor Developer unit motor Connector Deve...

Page 283: ...ction sensor S9 Process unit EPU C Toner motor M4 Toner cartridge detection sensor S10 Process unit EPU K Toner motor M5 Toner cartridge detection sensor S11 Take off the corresponding toner motor assembly 3 Disconnect the 1 connector on the developer unit motor 4 Remove 2 screws and take off the developer drive unit Fig 12 54 1 Take off the tray back cover and transfer belt cleaning unit P 2 28 C...

Page 284: ... ply section Fig 12 56 4 Remove 1 clamp and then disconnect 1 relay connector Fig 12 57 5 Remove 1 screw 6 Pull out the toner rod to the front of the equipment Remove 1 clip and take off the toner motor assembly from the toner rod Fig 12 58 Toner supply section Clamp Connector Toner motor assembly Toner rod Clip ...

Page 285: ... P 12 27 J Toner motor assembly 2 Remove 1 screw and take off the toner motor Fig 12 59 1 Take off the toner motor assembly P 12 27 J Toner motor assembly 2 Disconnect 1 connector and then release the latch to take off the Toner cartridge detection sensor Fig 12 60 1 Remove 1 screw and then take off the ozone filter 1 Fig 12 61 Toner motor Toner cartridge detection sensor Connector Ozone filter 1 ...

Page 286: ... 1 screw Disconnect the 1 relay connector and then take off the ozone exhaust duct Fig 12 62 1 Take off the ozone exhaust duct P 12 30 N Ozone exhaust duct 2 Release the 7 latches and take off the ozone exhaust fan Fig 12 63 1 Open the board case P 2 43 K Board case 2 Remove 2 screws Disconnect 1 relay con nector and take off the internal cooling duct Fig 12 64 Ozone exhaust duct Relay connector O...

Page 287: ... and then take off the filter cover Note When installing the filter cover be sure to install it with 2 hooks on the cover inserted to respective holes on the frame Fig 12 66 2 Remove the ozon filter 2 Note When installing the ozone filter 2 be sure to insert it all the way in and be careful not to damage the mesh Fig 12 67 Internal cooling fan Latch Filter cover Ozone filter 2 ...

Page 288: ...e STUDIO2500c 3500c 3510c DEVELOPER UNIT May 2006 TOSHIBA TEC 12 32 ...

Page 289: ...rlaid on the transfer belt in order and then the overlaid images are transferred onto paper After the completion of the 2nd transfer the residual toner on the transfer belt is scraped off by the transfer belt cleaning blade and then transported to the used toner bag Fig 13 1 Transfer belt cleaning blade Drive roller cleaning mylar Used toner auger Transfer belt 1st transfer roller Y 1st transfer r...

Page 290: ...ller status detection sensor S15 Drive roller cleaning mylar PM parts 2nd transfer facing roller cleaning mylar PM parts Transfer belt cleaning Transfer belt cleaning blade PM parts Used toner auger Transfer belt motor M7 2nd transfer unit 2nd transfer roller PM parts 2nd transfer roller position detection sensor S29 Paper clinging detection sensor S27 Image position aligning sensor front rear S16...

Page 291: ...ade and the transfer belt 4 Tension roller This roller applies tensile force to the transfer belt with its spring 5 2nd transfer facing roller This roller contacts with the 2nd transfer roller holding the transfer belt between them to nip paper When the 2nd transfer bias is applied from the high voltage power supply to the 2nd transfer facing roller a toner image is transferred onto paper To clean...

Page 292: ...his metal roller covered with sponge and an NBR tube is located to face the 2nd transfer facing roller through the transfer belt When the registration motor is rotated reversely the drive from the registration motor is transmitted to this roller through the cam and arm and thus this roller contacts with or releases from the transfer belt 14 2nd transfer roller position detection sensor S29 This ph...

Page 293: ...sfer roller K and a toner image on the photoconductive drum K is transferred onto the transfer belt to be overlaid on the toner images Y M and C 7 When the printing operation is completed the 1st transfer rollers of Y M and C move to a position released from the drum B 2nd transfer 1 The 2nd transfer roller waits at the position released from the transfer belt during the equipment s waiting period...

Page 294: ...ing the equipment s waiting period 2 Printing starts and then the 2nd transfer roller moves to the position contacting with the transfer belt 3 The transfer belt rotates and then a toner image on the transfer belt surface is moved to the 2nd transfer position 4 The registration rollers align paper and then the paper is transported to the 2nd transfer roller 5 A bias is applied to the 2nd transfer ...

Page 295: ...everal times 2 This printed test pattern is read by the rear and front registration sensors each time to measure the amount of deviation between four colors 3 The amount of deviation thus measured is arithmetically operated on by the microcomputer 4 The deviation amount is judged from the result of calculation and then the correction for the laser write position correction of primary and secondary...

Page 296: ...tor to the transfer belt drive roller as well as by slippage between the transfer belt and the transfer belt drive roller Deviation caused by meandering of the transfer belt Fluctuating deviation in the primary scanning direction caused by meandering of the transfer belt Deviation Measurement Calculation Pitch x m c k Object of Correction Parallel deviation in the secondary scanning direction Pk c...

Page 297: ...d based on the reference clock TBMCK and output only when the enable signal TBMEN is a high level Also the rotation speed or direction of the motor can be switched by changing the output timing of each pulse signal Fig 13 3 Control signal CW Clockwise rotation CCW Counter clockwise rotation viewing from the axis Signal Function Status High level Low level TBMCK Reference clock TBMEN Enable signal ...

Page 298: ... The motor driver outputs the drive signal TBLTM1A 0A TBLTM1B 1A to the motor based on the con trol signal TBLTM1A 0C TBLTM1B 1C output from the ASIC The motor operates the rotation stop or brake according to the status of these drive signals Fig 13 4 Control signal Signal Motor status ASIC output Motor driver output TBLTM1A 0C TBLTM1B 1C TBLTM1A 0A TBLTM1B 1A L L OFF high impedance Stop L H L H R...

Page 299: ...e hole in the left side of the transfer belt cleaning duct and release the latch by pushing the screw driver in the direction of the arrow A Then release the right side latch by pushing it in the direction of the arrow B and pull the transfer belt cleaning duct toward the front to take it off Fig 13 5 3 Rotate the lever sky blue counterclockwise and pull it to the front to take it off Fig 13 6 B A...

Page 300: ...ook lever to lock it as shown in the figure otherwise the transfer belt cleaning unit cannot be installed 3 Insert the A portion of the transfer belt cleaning unit beneath the stay B of the main frame 4 Align the portion C of the transfer belt cleaning unit with the portion D of the main frame then slide the transfer belt cleaning unit along the stay B of the main frame all the way in 5 Rotate the...

Page 301: ...overy plate Fig 13 9 4 Remove the blade seals both front and rear sides Notes 1 When the blade seals are being attached attach them on the position shown in the figure by slightly pushing it to the direc tion of the arrow 2 After the blade seals have been attached be sure that no gap is left between the blade seals and the edge of the transfer belt cleaning blade Fig 13 10 Transfer belt cleaning b...

Page 302: ...g the roller or frame of the transfer belt unit except when only the transfer belt or drive roller is disassembled 1 Take off the transfer belt cleaning unit P 13 11 A 1 Transfer belt cleaning unit 2 Remove 1 screw and then turn the TBU lift ing lever counterclockwise for 90 degrees Fig 13 11 3 Move the automatic duplexing unit to its maintenance position P 16 13 A ADU maintenance position 4 Open ...

Page 303: ...llow the procedure below for the installa tion 1 Rotate the TBU cleaner pressure hook lever on the transfer belt unit to lock the TBU cleaner pressure hook 2 Check if the TBU release lever is at the release position vertical position 3 Check that the middle guide of the unit is opened 4 Insert the transfer belt unit by sliding the unit along the rail 5 Store the front handle and then push the hold...

Page 304: ...lt unit P 13 14 B 1 Transfer belt unit TBU 2 Remove 8 screws and then take off the 2 stays Fig 13 16 3 Remove 2 screws and then take off the TBU cleanner pressure hook assembly and 2 springs Fig 13 17 4 Push the stopper while pushing the arm of the tension roller and then release the ten sion of the transfer belt Fig 13 18 Stay Stay TBU cleanner pressure hook assembly Spring Spring Stoper Arm ...

Page 305: ...0c TRANSFER UNIT 13 17 5 Remove 1 screw and then take off the front bracket and handle Fig 13 19 6 Remove 2 screws and then take off the rear bracket Fig 13 20 7 Fold the frame with its rear side up Fig 13 21 Handle Front bracket Rear bracket Frame ...

Page 306: ...en the belt is being replaced clean its drive roller 2nd transfer facing roller ten sion roller and idling roller with alcohol 6 Check if the rib on both ends of the trans fer belt does not run on the rollers 7 After the transfer belt has been installed apply the tension to the transfer belt by pushing the stopper of the tension roller If the tension is not applied the transfer belt may deviate to...

Page 307: ...cleaning bracket Fig 13 26 6 Peel the drive roller cleaning mylar Note Attach the drive roller cleaning mylar on the position shown in the figure within the error of 1 mm or less by slightly pushing it to the 2 edges of the drive roller cleaning blade in the direction of the arrow Fig 13 27 Drive roller Pin Pin Bearing Gear Gear Drive roller cleaning bracket Drive roller cleaning mylar Drive rolle...

Page 308: ...13 28 3 Remove 4 screws 4 Then remove 4 of the 1st transfer rollers and 4 front terminals Fig 13 29 1 Take off the transfer belt P 13 16 B 2 Transfer belt 2 Remove 2 screws and then take off the 2nd transfer facing roller front holder Then take off the 2nd transfer facing roller and 1 bear ing Note Be sure not to damage the earth plate of 2nd transfer facing roller rear holder Fig 13 30 Gear Lift ...

Page 309: ...he direction of the arrow Fig 13 31 1 Take off the transfer belt P 13 16 B 2 Transfer belt 2 Remove 2 E rings and then take off the ten sion roller Then take off the bushing and 2 bearings Note Be careful not to deform the earth plate of the tension roller arm on the front side Fig 13 32 3 Remove the E rings and springs of both front and rear tension roller arms Then take off the tension roller ar...

Page 310: ...n take off the idler roller Then take off the 2 bushings and 2 bearings Note Be careful not to deform the earth plate of the tension roller arm on the front side Fig 13 34 3 Remove 3 E rings and then slide the 3 bush ings of the cam shaft Fig 13 35 4 Remove 2 screws and then take off the TBU brush bracket Fig 13 36 Idler roller Bearing Bearing Bushing Bushing Bushing TBU brush bracket ...

Page 311: ...connector to take off the 1st transfer roller cam motor assembly Fig 13 37 6 Release the 1 latch and take off the 3 gears Fig 13 38 7 Remove 2 screws and then take off the 1st transfer roller cam motor Fig 13 39 1st transfer roller cam motor gear assembly Relay connector Gear Gear Gear 1st transfer roller cam motor ...

Page 312: ...ws and then take off the 2nd transfer facing roller cleaner Fig 13 40 3 Remove the seal 4 Release the latch and disconnect the con nector to take off the 1st transfer roller status detection sensor Fig 13 41 1 Move the automatic duplexing unit to its maintenance position P 16 13 A ADU maintenance position 2 Take off the right front hinge cover P 2 33 N Right front hinge cover 3 Remove 1 screw and ...

Page 313: ...onnector and then remove 2 clamps Fig 13 43 5 Remove 1 screw and then take off the 2nd transfer unit hinge stay Fig 13 44 6 Lift up the 2nd transfer unit slightly and then take it off by sliding it to the front side Fig 13 45 Connector Clamp 2nd transfer unit hinge stay 2nd transfer unit ...

Page 314: ... 2nd transfer roller Note Be careful not to drop the clip bearing and bushing into the inside of the 2nd transfer unit Fig 13 46 1 Take off the 2nd transfer unit P 13 24 C 1 2nd transfer unit TRU 2 Remove 4 screws and take off the TRU cover Note When installing the TRU cover be sure not to damage the mylar Fig 13 47 1 Take off the TRU cover P 13 26 C 3 TRU cover 2 Remove 1 screw and then disconnec...

Page 315: ...ing ing detection sensor Fig 13 49 1 Take off the TRU cover P 13 26 C 3 TRU cover 2 Disconnect the connector of paper clinging detection sensor and release the harness out of 2 hooks Fig 13 50 3 Remove 2 screws and take off the resistor Fig 13 51 Paper clinging detection sensor Paper clinging detection sensor Connector Hook Resistor ...

Page 316: ...U guide assembly Fig 13 52 5 Remove 2 screws and take off the TRU earth plate Fig 13 53 1 Take off the paper dust holder P 10 40 Q Paper dust holder 2 Disconnect the connector release the latch and take off the 2nd transfer roller position detection sensor Fig 13 54 TRU guide assembly TRU earth plate 2nd transfer roller position detection sensor Connector ...

Page 317: ...ws and then disconnect the connector to take off the transfer belt motor Fig 13 55 4 Release the upper hook to take off the trans fer belt motor unit Note When installing the transfer belt motor make sure that the TBU separation lever is at the fixed position horizontal position with the transfer belt unit installed Secure the hook of the transfer belt motor unit onto the equip ment and fix it wit...

Page 318: ...nsfer cover switch SW3 1 Open the board case P 2 43 K Board case 2 Take off the right inner cover P 2 34 P Right inner cover 3 Release the 2 latches and then disconnect the connector to take off the transfer cover switch Fig 13 58 Transfer cover switch Connector Latch Latch ...

Page 319: ...ted light amount signal The light source amount voltage of the sensor is adjusted to corre spond with the value set in advance and the output value of reflected light amount signal at this adjust ment is stored This output value is considered as the reading of the belt surface Next the sensor outputs the reflected light amount signal when a test pattern is developed on the transfer belt This out p...

Page 320: ...e D A converter Converts light source amount signal into the voltage to the sensor Laser optical system Performs test pattern exposure for toner image formation A D converter Converts the output voltage from the sensor into digital values and out puts them to the CPU Image forming process Performs charging laser exposing and developing processes CPU Performs steps 1 to 10 described in chapter 14 4...

Page 321: ...oltage corresponding to the reflected light amount The output voltage is then converted analog to digital into reflected light amount signal The CPU cal culates the toner adhesion amount to control the image forming conditions Fig 14 2 CPU A D D A Transfer belt Test pattern toner image Light emitting element Light receiving element Reflected light amount voltage Reflected light amount signal Light...

Page 322: ...tern is formed on the transfer belt 5 Toner adhesion amount of test pattern high density is calculated 6 Judgment whether the toner adhesion amount of the test pattern is within the acceptable range or not Modifies the image forming conditions 7 Toner adhesion amount of the test pattern low density is calculated 8 Judgment whether the toner adhesion amount of the test pattern is within the accepta...

Page 323: ...st holder P 10 40 Q Paper dust holder 2 Remove 3 screws 3 Disconnect 3 connectors and 1 relay connec tor Then take off the image quality control unit Fig 14 3 1 Take off the image quality control unit P 14 5 A Image quality control unit 2 Remove 2 screws and take off the image position aligning sensor front Fig 14 4 Image quality control unit Connector Relay connector Image position aligning senso...

Page 324: ...t 2 Remove 2 screws and take off the image position aligning sensor rear Fig 14 5 1 Take off the image quality control unit P 14 5 A Image quality control unit 2 Remove 2 screws and take off the image quality sensor Fig 14 6 1 Take off the image quality control unit P 14 5 A Image quality control unit 2 Remove 2 screws and take off the sensor shutter solenoid Fig 14 7 Image position aligning senso...

Page 325: ...ers separation plate thermopiles thermistors thermostats etc The heat roller fuser roller and pressure roller in the fuser unit are driven by the fuser motor and the exit roller is driven by the exit motor Fig 15 1 Fuser belt Fuser roller Heat roller Center heater lamp Side heater lamp Heat roller center thermopile Heat roller rear thermopile Heat roller front thermistor Heat roller center thermos...

Page 326: ... 600W Heat roller center thermopile THMP1 Heat roller rear thermopile THMP2 Heat roller front thermistor THM3 Heat roller center thermostat THMO1 Heat roller rear thermostat THMO2 Pressure roller PM parts Pressure roller lamp LAMP3 300W Pressure roller center thermistor THM4 Pressure roller rear thermistor THM5 Pressure roller thermostat THMO3 Separation finger PM parts Separation plate Fuser moto...

Page 327: ...ed toner is soaked into the paper In order to improve the fusing ability the fuser roller with sponge surface is employed to expand the nip width 5 Pressure roller The pressure roller is a rubber roller which ensures proper nip width between the pressure roller and fuser roller fuser belt and it is pressed on the fuser roller fuser belt by springs in order to fuse toner effectively to the paper Al...

Page 328: ...ver heated without heat absorption by paper since paper does not pass through this area This ther mistor is not related to the temperature control of the pressure roller 12 Pressure roller thermostat THMO3 The thermostat cuts off the power supply to the pressure roller lamp by opening itself if the pressure roller becomes abnormally hot as a result of the problem such as thermistor malfunction The...

Page 329: ...pressure roller The pressure roller lamp is turned ON OFF constantly to maintain the preset temperature in order to stabilize the surface temperature of the pressure roller reduce warming up time and enhance fusing ability The heat roller center thermopile THMP1 and heat roller rear thermopile THMP2 control the temper ature of heat roller and the heat roller center thermostat THMO1 and heat roller...

Page 330: ...mistor thermopile other than the pressure roller rear thermistor In case that the surface tempera ture of the fuser belt or the pressure roller has exceeded the specified temperature the forcible power OFF circuit transmits an overheat detection signal to the ASIC and the heater lamp control circuit and transmits a reset signal to the power switch to turn the power OFF forcibly In addition if thes...

Page 331: ...rned ON OFF alternately to maintain the surface temperature of the fuser belt at a certain level setting temper ature of each status Output voltages V Surface temperatures of fuser belt C Fuser belt front thermistor Fuser belt center rear thermopile Approx 0 3 Approx 1 3 40 Approx 2 6 Approx 1 9 120 Approx 3 6 Approx 2 4 160 Output voltages V Surface temperatures of pressure roller C Pressure roll...

Page 332: ...f temperature control for saving energy and returns to ready status to perform printing in each mode upon printing request The period of time from the printing request to this mode can be set in the Setting Mode 08 or by an from administrator Administrator setting procedure USER FUNCTIONS button ADMIN input of administrator s password GENERAL ENERGY SAVER Auto Power Save Mode Setting Mode 08 205 W...

Page 333: ...Reset the counter to 0 after repair ing them then turn ON the power If the fuser unit error status counter is 35 or over e g 40 the data in NVRAM or NVRAM itself may possibly have been ruined due to causes such as leakage from the chargers Check the bias high voltage transformers and needle electrodes to see if any of them is defective and also look through all the data in the NVRAM When the therm...

Page 334: ...the heater lamps ON As a result the temperature of the fuser belt or pressure roller rises and possibly activates the thermostat which is a safety protection device To prevent this in advance the ASIC works to detect whether each thermistor and thermopile is broken or not Also the the control circuit constantly checks the temperature of the heat roller and the pressure roller to prevent them from ...

Page 335: ...ermistor thermopile Pressure roller thermistor Front Center Rear Center Rear Power ON 1 230 C or above C449 9 Power ON 230 C or above 230 C or above 210 C or above C468 8 210 C or above 2 40 C or below 150 C or above C412 2 150 C or above 40 C or below Detecting 40 C 1 230 C or above C449 19 On usual 230 C or above 230 C or above 210 C or above C468 18 210 C or above 2 40 C or below C412 C411 2 1 ...

Page 336: ...xed time Ready tempera ture or below Ready tempera ture or below C466 C465 6 5 Fixed time Ready tempera ture or below During ready 1 230 C or above C449 23 On usual 230 C or above 230 C or above 210 C or above C468 26 210 C or above 2 40 C or below C447 7 40 C or below 40 C or below 40 C or below C467 33 40 C or below Check timing Con diti on Temperature judged Error code Counter 08 400 Error judg...

Page 337: ...C or above 230 C or above 210 C or above C468 26 210 C or above 2 40 C or below C447 24 40 C or below 40 C or below 40 C or below C467 34 40 C or below At energy saving mode 1 230 C or above C449 27 On usual 230 C or above 230 C or above 210 C or above C468 26 210 C or above At paper jam 1 230 C or above C449 29 On usual 230 C or above 230 C or above 210 C or above C468 28 210 C or above Check tim...

Page 338: ...rotates only counter clockwise When thick paper or OHP sheet is used FSMGA signal moves to a low level to reduce the motor speed in half and lower the paper transport speed so that the fusibility of toner is improved Signal Function Status High level Low level FSMON Motor ON signal OFF ON FSMDIR Rotation direction signal CCW CW unused FSMGA Speed switching signal High speed Low speed FSMCK Referen...

Page 339: ... the reference clock EXMCK and output only when the enable signal EXMEN is a high level Also the rotation speed or direction of the motor can be switched by changing the output timing of each pulse signal Fig 15 7 CW Clockwise rotation CCW Counter clockwise rotation viewing from the axis Signal Function Status High level Low level EXMCK Reference clock EXMEN Enable signal ON OFF EXMCW Rotation dir...

Page 340: ... whether the fuser related life counter val ues have been cleared in the list printing mode PM supporting mode or the setting mode 08 When they are not cleared check that the value of the code 08 4549 is set at 0 If the value is 1 turn the power OFF and then back ON after changing the value to 0 and then check the counter values again Life counters to be cleared at blow out of the fuser unit fuse ...

Page 341: ...ic duplexing unit ADU and 2nd transfer unit TRU 2 Loosen 2 screws and then take off the fuser unit Note The fuser unit is extremely hot When taking off the fuser unit hold the handles of the unit to avoid a direct touch on the unit Fig 15 9 Notes Follow the procedure below for the installa tion 1 Insert the fuser unit into the equipment and tighten the screws At this time turn the handle to engage...

Page 342: ...f the fuser unit P 15 17 A 1 Fuser unit 2 Remove 2 screws and then take off the rear side cover Note When installing the rear side cover pull the harness out of the cover as shown in the fig ure so that the harness will not be caught by the cover Fig 15 12 1 Take off the fuser unit P 15 17 A 1 Fuser unit 2 Remove 2 screws one on the rear side is a shoulder screw and take off the pressure roller co...

Page 343: ...4 3 Remove 2 screws and take off the transport guide Note When installing the transport guide hook the 3 latches of the transport guide onto the holes of the frame Fig 15 15 1 Take off the front side cover and transport guide P 15 18 A 2 Front side cover P 15 19 A 5 Transport guide 2 Loosen 2 pressure screws and then remove 2 springs Note When installing tighten the 2 pressure screws securely unti...

Page 344: ...p ment and fix it at that position When installing the separation finger unit be sure not to scratch the transfer belt and the pressure roller Fig 15 17 4 Remove the spring and then take off the separation fingers Fig 15 18 1 Take off the separation finger unit P 15 19 A 6 Separation finger unit Separation finger 2 Release the harness on the front side out of 1 clamp and then disconnect 1 relay co...

Page 345: ...ay connec tor Fig 15 20 4 Loosen 1 screw and then slide the bracket to unfix the pressure roller lamp Fig 15 21 5 Slide the pressure roller lamp to the rear side to take it off from the front bracket Then take off the pressure roller by lifting it up Fig 15 22 Relay connector Clamp Clamp Stay Pressure roller lamp Bracket Pressure roller lamp Bracket Pressure roller ...

Page 346: ...e When installing the pressure roller check if the C ring is securely engaged into the groove of the pressure roller Fig 15 24 1 Take off the front side cover pressure roller cover and transport guide P 15 18 A 2 Front side cover P 15 18 A 4 Pressure roller cover P 15 19 A 5 Transport guide 2 Loosen 2 pressure screws and then remove 2 springs Note When installing tighten the 2 pressure screws secu...

Page 347: ...user unit temperature is in the normal state If the gap is out of the specified value be sure to adjust it SERVICE HANDBOOK 3 16 Adjustment of the separation plate gap Fuser Unit Fig 15 26 4 Release the harness on the rear side out of 3 clamps and then disconnect 4 relay connec tors Note When installing them pull the harness under the stay Fig 15 27 5 Remove 1 screw and then release the har ness o...

Page 348: ...nder the stay Fig 15 29 7 Remove 4 screws and then release the har ness out of 1 clamp to take off the fuser belt sensor bracket and the lamp rear bracket Fig 15 30 8 Remove 2 E rings from the fuser roller Then remove 2 washers 2 bushings and 2 bear ings Fig 15 31 Center heater lamp Side heater lamp Lamp front bracket Lamp rear bracket Fuser belt sensor bracket Clamp Bushing Washer Washer Fuser ro...

Page 349: ...unit place the longer shaft of the fuser roller on the rear side Fig 15 32 1 Take off the fuser belt unit P 15 22 A 8 Separation plate Fuser belt unit Center heater lamp LAMP1 Side heater lamp LAMP2 2 Remove 2 bearings from each side of the heat roller Fig 15 33 3 Take off the heat roller and fuser roller from the fuser belt Note Be careful not to scratch the fuser belt Lay the fuser belt on the c...

Page 350: ...e groove of the heat roller Check that the C ring is also securely fit ted in the groove of the fuser belt guide and avoid the convex portion Fig 15 35 1 Take off the front side cover and transport guide P 15 18 A 2 Front side cover P 15 19 A 5 Transport guide 2 Front side Release the harness out of the 1 clamp and then disconnect the 1 relay con nector Fig 15 36 3 Rear side Release the harness ou...

Page 351: ...crew Release the harness out of the 6 clamps and take off the pressure roller thermostat bracket Fig 15 39 6 Remove 2 screws and then take off the pressure roller thermostat from its bracket by releasing the harness out of the 2 terminals Fig 15 40 Heat roller cover Clamp Pressure roller thermostat bracket Clamp Clamp Harness Harness Pressure roller thermostat ...

Page 352: ...p between the pressure roller thermostat and the pressure roller while they are being pushed each other 1 Remove 2 screws and take off the entry guide 2 Check that the gap between the pressure roller thermostat and the pressure roller is 1 6 2 4 mm through the opening Fig 15 41 Entry guide 1 6 2 4 mm Pressure roller Pressure roller thermostat THMO3 ...

Page 353: ...lamps 3 Remove the 2 screws of each thermistor and then take off the both brackets of the pressure roller center thermistor and the pressure roller rear thermistor Fig 15 42 4 Remove 2 screws and take off the pressure roller center thermistor 5 Remove 1 screw and take off the pressure roller rear thermistor Fig 15 43 Pressure roller center thermistor bracket Pressure roller rear thermistor bracket...

Page 354: ...ed each other in the following procedure 1 Remove 2 screws and take off the entry guide 2 Check that the thermistor is contacted with the fuser belt through the opening 3 Take off the separation finger unit P 15 19 A 6 Separation finger unit Separation finger 4 Check that the gap between the pressure roller center thermistor and the pressure roller is 1 5 2 5 mm through the opening Fig 15 44 Fig 1...

Page 355: ...s out of 2 terminals of the fuser belt center thermostat Fig 15 47 3 Remove 3 screws and take off the fuser belt center thermostat Fig 15 48 Notes When installing them fix the thermostat and then fix the terminal of the harness Check that the gap between the fuser belt center thermostat and the fuser belt is 1 6 2 4 mm while they are being pushed each other through the opening Fig 15 49 Harness Fu...

Page 356: ... out of 2 terminal of the fuser belt rear thermostat Fig 15 50 3 Remove 2 screws and take off the fuser belt rear thermostat Fig 15 51 Notes When installing them fix the thermostat and then fix the terminal of the harness Check that the gap between the fuser belt rear thermostat and the fuser belt is 1 6 mm 2 4 mm while they are being pushed each other through the opening Fig 15 52 Fuser belt rear...

Page 357: ... 18 A 2 Front side cover P 15 18 A 4 Pressure roller cover P 15 19 A 5 Transport guide 2 Release the harness out of clamps and then disconnect the relay connector Fig 15 53 3 Remove 1 screw and take off the fuser belt front thermistor bracket Fig 15 54 4 Remove 1 screw and take off the fuser belt front thermistor Fig 15 55 Relay connector Fuser belt front thermistor bracket Fuser belt front thermi...

Page 358: ... thermistors be sure not to deform them Also check if the thermistors are contacted with the fuser belt while they are pressed Fig 15 56 1 Take off the fuser unit P 15 17 A 1 Fuser unit 2 Open the jam access cover Fig 15 57 3 Remove 3 screws and take off the cover A Fig 15 58 Fuser belt front thermistor Jam access cover Cover A ...

Page 359: ...May 2006 TOSHIBA TEC e STUDIO2500c 3500c 3510c FUSER UNIT PAPER EXIT SECTION 15 35 4 Remove 1 screw and bracket 5 Disconnect 1 connector and take off the exit sensor Fig 15 59 Exit sensor Bracket Connector ...

Page 360: ...ll amount of alcohol to clean it 1 Take off the fuser unit P 15 17 A 1 Fuser unit 2 Loosen 2 screws and take off the Fuser belt thermopile cover Fig 15 60 3 Loosen 1 screw of each thermopile Then disconnect the connector to take off the ther mopile bracket Fig 15 61 4 Remove 1 screw of each thermopile Then take off the thermopiles from their brackets and covers Fig 15 62 Fuser belt thermopile cove...

Page 361: ... unit 2 Remove 2 screws and take off the exit duct Fig 15 63 3 Loosen 2 screws and take off the exit unit Fig 15 64 1 Take off the exit unit P 15 37 C 1 Exit unit 2 Remove 2 screws 3 Remove the exit flame from the exit duct base Note When installing the exit flame hook the flame of the exit flame onto the 2 hooks of the exit duct base Fig 15 65 Exit duct Exit unit Hook Exit flame Exit duct base ...

Page 362: ...ke off the gear 6 Remove 2 E rings and take off the 2 bushing and upper exit roller Fig 15 67 7 Remove the lower exit roller from the exit flame Slide the 4 lower exit rollers to sepa rate it from the 2 shafts Fig 15 68 Exit flame Leaf spring Upper exit roller Exit flame Bushing Gear Bushing Lower exit roller Lower exit roller Shaft Lower exit roller Shaft Exit flame ...

Page 363: ... exit section drive unit fuser motor and internal cooling fan P 15 17 A 1 Fuser unit P 15 39 F Exit section drive unit P 15 39 D Fuser motor M17 P 12 30 P Internal cooling fan M23 2 Remove 3 screws and take off the harness from 3 harness clamps Slide the fuser drive unit in the upper right direction to take it off Fig 15 70 1 Open the board case P 2 43 K Board case 2 Release the harness out of the...

Page 364: ... drive unit P 15 39 F Exit section drive unit 2 Remove 2 screws and take off the fuser exit section cooling fan Fig 15 72 3 Remove 2 E rings 1 pully and 1 belt and take off the exit motor Notes Replace the rexit motor with the bracket installed Never attempt to loosen 2 screws fixing exit motor Fig 15 73 Fuser exit section cooling fan Screw Belt Pully Exit motor ...

Page 365: ...t of paper is switchbacked by the exit roller right after the printing operation fusing operation on one side is completed and the reversed sheet is transported to the registration section for the other side of the sheet to be printed The ADU mainly consists of the transport rollers and their drive system paper guide and ADU entrance exit sensor Fig 16 1 Upper transport roller Entrance guide ADU m...

Page 366: ...A TEC 16 2 16 2 Composition Automatic Duplexing Unit ADU ADU motor M22 Stepping motor ADU clutch CLT7 ADU entrance sensor S38 ADU exit sensor S39 ADU opening closing switch SW7 ADU driving PC board ADU Upper transport roller Middle transport roller Lower transport roller ...

Page 367: ...le transport roller When the ADU clutch CLT7 is turned ON the upper and middle transport roller starts rotating 3 ADU entrance sensor S38 This sensor detects input paper of the ADU transportation 4 ADU exit sensor S39 This sensor detects output paper of the ADU transportation 5 ADU opening closing switch SW37 This switch detects whether the ADU is open or not 6 Upper transport roller Middle transp...

Page 368: ...motor M22 rotates to the direction A the upper transport roller is rotated driven by the gears and belt The ADU clutch CLT7 is then turned ON and the middle transport roller and lower transport roller are rotated Fig 16 2 ADU motor ADU clutch Upper transport roller Middle transport roller Lower transport roller A ...

Page 369: ...e are three methods of judging a paper jam 1 whether the ADU entrance sensor S38 is turned ON or not in a specified period of time after the switchback to the ADU started E510 2 whether the ADU exit sensor S39 is turned ON or not in a specified period of time after the ADU entrance sensor S38 is turned ON E520 3 whether the registration sensor S28 is turned ON or not in a specified period of time ...

Page 370: ...MATIC DUPLEXING UNIT ADU May 2006 TOSHIBA TEC 16 6 1 Single paper circulation With the paper larger than A4 LT size duplex printing back side printing front side printing is per formed for one sheet at a time as shown below Fig 16 3 ...

Page 371: ...IT ADU 16 7 2 Double paper alternateness circulation With A4 LT size paper or smaller duplex printing is performed for two sheets at a time as shown below Back side of the 1st sheet Back side of the 2nd sheet Front side of the 1st sheet Front side of the 2nd sheet Fig 16 4 ...

Page 372: ...ting is performed as shown below in a following order In case of 5 sheets Back side of the 1st sheet 2 Back side of the 2nd sheet 4 Front side of the 1st sheet 1 Back side of the 3rd sheet 6 Front side of the 2nd sheet 3 Back side of the 4th sheet 8 Front side of the 3rd sheet 5 Back side of the 5th sheet 10 Front side of the 4th sheet 7 Front side of the 5th sheet 9 Fig 16 5 ...

Page 373: ...810 10370 10470 12450 13035 6620 7685 8580 11350 12720 13785 13075 6335 6790 8295 8753 12430 12885 2470 4340 4830 6300 7265 8740 8965 10435 10925 12395 13360 14830 4205 4350 6165 6955 10450 10295 8765 12255 13010 14685 8590 3960 5360 6320 7720 8755 10155 10455 11855 12415 13815 14850 Exit sensor Registration sensor fwd rev ADU exit sensor ADU clutch ADU motor Registration motor ADU entrance sensor...

Page 374: ...duplex copying from 1st drawer A3 1 sheet Fig 16 7 0 7165 8235 8530 10670 7460 8250 8530 10635 7805 10325 7440 9815 2470 5340 8530 11390 5195 8170 11240 3960 6760 10020 12720 Unit msec Exit sensor Registration sensor fwd rev ADU exit sensor ADU clutch ADU motor Registration motor ADU entrance sensor ...

Page 375: ...Specified time has passed Specified time has passed ADU motor ON ADU motor ON ADU clutch ON ADU transport jam E510 ADU transport jam E520 ADU motor stopped ADU entrance sensor ON ADU exit sensor check the arrival Trailing edge of first paper turned OFF the ADU exit sensor Specified time has passed Paper is transported to the first stopping position in ADU ...

Page 376: ...DU paper feeding command signal received Registration sensor ON ADU motor stopped ADU clutch OFF ADU motor clutch ON Registration proceeded Registration operation completed ADU motor stopped ADU clutch OFF ADU feeding operation started Next paper is ready for the registration ADU misfeeding E110 A ...

Page 377: ...omatic duplexing unit ADU When the ADU is at its maintenance position do not close the ADU because it may be damaged 1 Open the automatic duplexing unit 2 Remove 1 screw of the front hinge and then take off the automatic duplexing unit by lifting it up slightly and sliding it to the rear side Fig 16 8 3 When installing match the front and rear hinge holes of the equipment and the right and left hi...

Page 378: ...ve 1 screw fixing the ground wires Fig 16 10 3 Remove 1 screw of the front hinge and then take off the automatic duplexing unit by lifting it up slightly and sliding it to the rear side Fig 16 11 Note When installing the ADU match the front and rear hinge bosses of the equipment and the hinge holes of the ADU Fig 16 12 Connector Ground wire Automatic duplexing unit Screw Automatic duplexing unit B...

Page 379: ...the ADU inside rear cover P 16 15 C ADU inside rear cover 2 Disconnect the connector and release the latch to take off the ADU opening closing switch Fig 16 14 1 Take off the automatic duplexing unit and ADU inside rear cover P 16 14 B Automatic Duplexing Unit ADU P 16 15 C ADU inside rear cover 2 Disconnect 6 connectors from the ADU board Release 3 lock supports and take off the ADU board Fig 16 ...

Page 380: ... on the front side and take off the paper guide Fig 16 17 1 Take off the automatic duplexing unit and ADU cover P 16 14 B Automatic Duplexing Unit ADU P 16 16 F ADU cover 2 Remove 1 E ring Cut off a binding band and disconnect 1 connector Then take off the ADU clutch Notes When installing the ADU clutch attach a rotation protection When installing the E ring make sure that the latches of both ends...

Page 381: ... the ADU clutch P 16 16 H ADU clutch CLT7 2 Remove the spring Fig 16 19 3 Remove 1 screw and take off the ADU rear latch Fig 16 20 4 Disconnect 1 connector Release the har ness from 2 harness clamps Remove 2 screws and take off the ADU drive unit Note Be sure not to lose the belt Fig 16 21 Spring ADU rear latch ADU drive unit ...

Page 382: ...d take off the ADU motor Fig 16 22 6 Take off the 1 E ring Then take off the 3 gears and timing belt from the ADU drive unit Fig 16 23 1 Take off the ADU drive unit P 16 17 I ADU drive unit ADU motor M22 2 Remove 1 E ring on the rear side Then take off 1 pulley Fig 16 24 ADU motor Gear Gear Gear Timing belt E ring E ring Pulley ...

Page 383: ...it ADU motor M22 Remove 2 clips 2 pulleys and 2 pins on the front side Then take off the timing belt 2 Remove 2 clips 2 pulleys and 2 pins on the front side Then take off the belt Fig 16 26 3 Remove 1 E ring 1 clip and 1 bushing on the rear side 4 Take off 1 bushing on the front side Then take off the middle transport roller Fig 16 27 Bushing Bushing Clip Upper transport roller Pin Pin Clip Clip P...

Page 384: ...leys and 2 pins on the front side Then take off the belt Fig 16 28 3 Remove 1 clip and 1 bushing on the rear side 4 Remove 1 bushing on the front side Then take off the lower transport roller Fig 16 29 1 Take off the ADU cover P 16 16 F ADU cover 2 Disconnect 1 connector Release the latches and take off the ADU entrance sensor Fig 16 30 Pin Pin Clip Clip Pulley Belt Pulley Bushing Bushing Clip Low...

Page 385: ...e ADU cover P 16 16 F ADU cover 2 Disconnect 1 connector Release the latches and take off the ADU exit sensor Fig 16 31 1 Open the bypass unit 2 Remove 2 screws and take off the ADU lower cover Fig 16 32 1 Open the automatic duplexing unit 2 Remove 2 screws and take off the ADU upper cover assembly Fig 16 33 ADU exit sensor ADU lower cover ADU upper cover assembly ...

Page 386: ...over P 2 34 P Right inner cover 3 Release the harness out of the 2 clamps and then disconnect 1 connector 4 Remove 1 clamp 5 Remove 3 screws and then take off the bracket Fig 16 34 6 Remove 1 E ring and take off the shaft and switch guide Fig 16 35 7 Release the latch and then take off the Cover interlock switch Fig 16 36 Bracket Connector Switch guide Shaft Cover interlock switch ...

Page 387: ...n switch line Power supply used in the entire equipment during image forming process Three kinds of voltage 3 3 V 5 1 V and 12V are output when the main switch of the equipment is turned ON b Cover switch line Power supply used in the entire equipment during image forming process being supplied via the cover switch Two kinds of voltage 5 1VD and 24VD are output only when the main switch of the equ...

Page 388: ...V line does it may cause the damage of the electron device on each control circuit To prevent this the supply of these voltages stops after the PWR DN signal is output and the minimum retaining time 3 3VA 5 1VA 50 ms or more 12VA 5 ms or more elapses 3 Output protection Each output system includes an overcurrent and overvoltage protection circuits a fuse and internal protection circuit This is to ...

Page 389: ... to the SLG board 3 3VB CN405 Pins 2 3 and 4 Output to the IMG board 2 5 1 V 5 1VA CN402 Pins 19 20 21and 22 Output to the SYS board 5 1VB CN402 Pin 17 Output to the SYS board 5 1VB CN403 Pin 7 Output to the LGC board PFP LCF via LGC board Bridge unit via LGC board 5 1VB CN404 Pins 1 and 2 Output to the SLG board RADF 5 1VB CN406 Pin 4 Output to the finisher 5 1VB CN412 Pin 1 Output to the FIL boa...

Page 390: ... SLG board RADF 24VD4 CN406 Pin 2 Output to the Finisher Output voltage by the type of connector Main switch line Cover switch line Connector Destination Voltage CN402 For the SYS board 3 3VA 3 3VB 5 1VA 5 1VB 12VA 12VB CN403 For the LGC board PFP LCF via LGC board bridge unit via LGC board 3 3VB 5 1VB 12VB CN404 For the SLG board RADF 3 3VB 5 1VB CN405 For the IMG board 3 3VA 3 3VB CN406 For the ...

Page 391: ... M M3 Toner motor C M4 Toner motor K M5 Used toner motor M6 Shutter motor M12 Internal cooling fan M23 Ozone exhaust fan M24 Fuser exit section cooling fan M25 Laser unit cooling fan M29 Auto toner sensor Y S22 Auto toner sensor M S23 Auto toner sensor C S24 Auto toner sensor K S25 Main switch SW1 1st drawer transport clutch Low speed CLT1 1st drawer transport clutch High speed CLT2 1st drawer fee...

Page 392: ...02 SYS board 3 3VA CN405 IMG board 3 3VB CN402 SYS board 3 3VB CN403 LGC board 3 3VB CN404 SLG board 3 3VB CN405 IMG board 12VA CN402 SYS board 12VB CN402 SYS board 12VB CN403 LGC board 12VB CN408 FAX unit 5 1VA CN402 SYS board 5 1VB CN402 SYS board 5 1VB CN404 SLG board RADF 5 1VB CN403 LGC board PFP LCF via LGC board bridge unit via LGC board 5 1VB CN406 Finisher 5 1VB CN412 FIL board CN410 F205...

Page 393: ... 5 1VA PWR DN 12VA PWR EN 3 3VB 5 1VB Linked with main switch Linked with main switch Linked with main switch Linked with main switch Linked with main switch 5 1VD Linked with cover switch 12VB Linked with main switch 24VD1 to 4 Linked with cover switch 20 to 30ms 20ms or higher 10ms or higher 20ms or higher 50ms or higher 5ms or higher 200ms or lower 5ms or higher 0ms or higher 0ms or higher 200m...

Page 394: ...ck Black Black J644 Black Red Blue Black White White White White White Black Black 1 3 2 4 1B 2B 1A 2A White Black J658 J659 Dram damp heater thermostat Right Dram damp heater thermostat Left 2 1 2 1 2 Dram damp heater Left 1 2 1 Dram damp heater Right White White Black White White Black AC N DRM R AC N DRM R AC L DRM R AC N DRM L AC L DRM L Not used SG 5 1VB Black Yellow AC L DRM R AC N DRM L AC ...

Page 395: ...18 May 2006 TOSHIBA TEC e STUDIO2500c 3500c 3510c PC BOARDS 18 1 18 PC BOARDS 1 PWA F SYS Fig 18 1 ...

Page 396: ...e STUDIO2500c 3500c 3510c PC BOARDS May 2006 TOSHIBA TEC 18 2 2 PWA F IMG Fig 18 2 3 PWA F LGC Fig 18 3 ...

Page 397: ...18 May 2006 TOSHIBA TEC e STUDIO2500c 3500c 3510c PC BOARDS 18 3 4 PWA F JSP Fig 18 4 5 PWA F USB Fig 18 5 ...

Page 398: ...e STUDIO2500c 3500c 3510c PC BOARDS May 2006 TOSHIBA TEC 18 4 6 PWA F CCD Fig 18 6 7 PWA F SLG Fig 18 7 ...

Page 399: ...18 May 2006 TOSHIBA TEC e STUDIO2500c 3500c 3510c PC BOARDS 18 5 8 PWA F DSP Fig 18 8 9 PWA F KEY Fig 18 9 10 PWA F ADU Fig 18 10 ...

Page 400: ...e STUDIO2500c 3500c 3510c PC BOARDS May 2006 TOSHIBA TEC 18 6 11 PWA F EPU Fig 18 11 12 PWA F FIL Fig 18 12 ...

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