TOSHIBA e-STUDIO350, e-STUDIO450 Service Manual

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Page 1

MULTIFUNCTIONAL DIGITAL SYSTEMS

e-STUDIO350/450

File No. SME03002800 R03092140700-TTEC Ver00 2003-11

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Page 3

GENERAL PRECAUTIONS REGARDING THE INSTALLATION

AND SERVICE FOR e-STUDIO350/450

The installation and service should be done by a qualified service technician.

1. Transportation / Installation

• When transporting/installing the equipment, employ two persons and be sure to use the posi

tions as indicated below.

The equipment is quite heavy and weighs approximately 83kg (182.98 lb.) therefore pay full

attention when handling it.

• Be sure not to hold the movable parts or units (e.g. the control panel, ADU or RADF) when

transporting the equipment.

• Be sure to use a dedicated outlet with AC 110V/13.2A, 115V or 127V / 12A, 220-240V or 240V

/ 8A for its power source.

• The equipment must be grounded for safety.

Never ground it to a gas pipe or a water pipe.

• Select a suitable place for installation.

Avoid excessive heat, high humidity, dust, vibration and direct sunlight.

• Also provide proper ventilation as the equipment emits a slight amount of ozone.

• To insure adequate working space for the copying operation, keep a minimum clearance of

80 cm (32”) on the left, 80 cm (32”) on the right and 10 cm (4”) in the rear.

• The socket-outlet shall be installed near the equipment and shall be easily accessible.

2. Service of Machines

• Basically, be sure to turn the main switch off and unplug the power cord during service.

• Be sure not to touch high-temperature sections such as the exposure lamp, the fuser unit, the

damp heater and their periphery.

• Be sure not to touch high-voltage sections such as the chargers, developer, IH control circuit,

high-voltage transformer, exposure lamp control inverter, inverter for the LCD backlight and

power supply unit. Especially, the board of these components should not be touched since the

electric charge may remain in the capacitors, etc. on them even after the power is turned OFF.

• Be sure not to touch rotating/operating sections such as gears, belts, pulleys, fan, etc.

• Be careful when removing the covers since there might be the parts with very sharp edges

underneath.

• When servicing the machines with the power turned ON, be sure not to touch live sections

and rotating/operating sections. Avoid exposure to laser radiation.

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• Use suitable measuring instruments and tools.

• Avoid exposure to laser radiation during servicing.

- Avoid direct exposure to the beam.

- Do not insert tools, parts, etc. that are reflective into the path of the laser beam.

- Remove all watches, rings, bracelets, etc. that are reflective.

• Unplug the power cable and clean the area around the prongs of the plug once a year or more.

A fire may occur when dust lies on this area.

3. Main Service Parts for Safety

• The breaker, door switch, fuse, thermostat, thermofuse, thermistor, etc. are particularly

important for safety. Be sure to handle/install them properly. If these parts are shorted circuit

and/or made their functions out, they may burn down, for instance, and may result in fatal

accidents. Do not allow a short circuit to occur. Do not use the parts not recommended

by Toshiba TEC Corporation.

4. Cautionary Labels

• During servicing, be sure to check the rating plate and the cautionary labels such as “Unplug

the power cord during service”, “Hot area”, “Laser warning label” etc. to see if there is any dirt

on their surface and whether they are properly stuck to the equipment.

5. Disposition of Consumable Parts, Packing Materials, Used batteries and RAM-ICs

• Regarding the recovery and disposal of the equipment, supplies, consumable parts, packing

materials, used batteries and RAM-ICs including lithium batteries, follow the relevant local

regulations or rules.

6. When parts are disassembled, reassembly is basically the reverse of disassembly unless

otherwise noted in this manual or other related documents. Be careful not to reassemble

small parts such as screws, washers, pins, E-rings, star washers in the wrong places.

7. Basically, the machine should not be operated with any parts removed or disassembled.

8. Precautions Against Static Electricity

• The PC board must be stored in an anti-electrostatic bag and handled carefully using a wrist-

band, because the ICs on it may become damaged due to static electricity.

Caution: Before using the wristband, pull out the power cord plug of the equipment and

make sure that there are no uninsulated charged objects in the vicinity.

Caution : Dispose of used batteries and RAM-ICs including lithium batteries according

to this manual.

Attention : Se débarrasser de batteries et RAM-ICs usés y compris les batteries en lithium

selon ce manuel.

Vorsicht : Entsorgung des gebrauchten Batterien und RAM-ICs (inklusive

der Lithium-Batterie) nach diesem Handbuch.

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1. SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES..................................... 1-1

1.1 Specifications ..................................................................................................................... 1-1

1.2 Accessories ........................................................................................................................ 1-5

1.3 Options ............................................................................................................................... 1-6

1.4 Supplies .............................................................................................................................. 1-6

1.5 System List ......................................................................................................................... 1-7

2. OUTLINE OF THE MACHINE ........................................................................................ 2-1

2.1 Sectional View .................................................................................................................... 2-1

2.2 Electric Parts Layout ........................................................................................................... 2-5

2.3 Symbols and Functions of Various Components .............................................................. 2-14

2.4 General Description .......................................................................................................... 2-21

2.5 Installation and Replacement of Covers and PC boards ................................................... 2-25

2.6 Options ............................................................................................................................. 2-35

3. COPY PROCESS ............................................................................................................3-1

3.1 General Description of Copying Process ............................................................................ 3-1

3.2 Details of Copying Process ................................................................................................. 3-2

3.3 Comparison with DP4500/3500 ........................................................................................ 3-10

4. GENERAL OPERATION ................................................................................................ 4-1

4.1 Overview of Operation ........................................................................................................ 4-1

4.2 Description of Operation ..................................................................................................... 4-1

4.2.1 Warming-up ............................................................................................................. 4-1

4.2.2 Ready state (ready for copying) .............................................................................. 4-2

4.2.3 Drawer feed copying (Upper drawer paper feeding) ................................................ 4-2

4.2.4 Bypass feed copying ................................................................................................ 4-5

4.2.5 Interruption copying ................................................................................................. 4-5

4.3 Detection of Abnormality ..................................................................................................... 4-6

4.3.1 Types of abnormality ................................................................................................ 4-6

4.3.2 Description of abnormality ........................................................................................ 4-7

4.4 Flow Chart ........................................................................................................................ 4-12

4.4.1 Immediately after the power is turned ON ............................................................... 4-12

4.4.2 Automatic paper feed copying ................................................................................ 4-14

5. CONTROL PANEL ......................................................................................................... 5-1

5.1 Control Panel and Display Panel ........................................................................................ 5-1

5.2 Items Shown on the Display Panel ..................................................................................... 5-2

5.2.1 Display..................................................................................................................... 5-3

5.3 Relation between the Equipment State and Operator’s Operation ...................................... 5-8

November 2003 © TOSHIBA TEC i e-STUDIO3511/4511 CONTENTS

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5.4 Description of Operation ..................................................................................................... 5-9

5.4.1 Dot matrix LCD circuit .............................................................................................. 5-9

5.4.2 LED display circuit ................................................................................................. 5-11

5.5 Disassembly and Replacement ........................................................................................ 5-12

6. SCANNER ..................................................................................................................... 6-1

6.1 Function ............................................................................................................................. 6-1

6.2 Construction ....................................................................................................................... 6-2

6.3 Description of Operation..................................................................................................... 6-4

6.3.1 Scan motor .............................................................................................................. 6-4

6.3.2 Scanning drive circuit .............................................................................................. 6-5

6.3.3 Initialization at power-ON ........................................................................................ 6-7

6.4 Control of Exposure Lamp .................................................................................................. 6-8

6.4.1 General description ................................................................................................. 6-8

6.4.2 Exposure lamp ........................................................................................................ 6-9

6.4.3 Control circuit for the exposure lamp ..................................................................... 6-10

6.5 General Description of CCD Control................................................................................. 6-11

6.5.1 Opto-electronic conversion .................................................................................... 6-11

6.5.2 Shading correction ................................................................................................ 6-11

6.6 Automatic Original Size Detection Circuit ......................................................................... 6-12

6.6.1 Principle of original size detection ......................................................................... 6-12

6.6.2 Process of detection of original size ...................................................................... 6-12

6.7 Disassembly and Replacement ........................................................................................ 6-16

7. IMAGE PROCESSING ................................................................................................... 7-1

7.1 General Description ............................................................................................................ 7-1

7.2 Configuration ...................................................................................................................... 7-3

7.3 SLG Board (PWA-F-SLG-360) ........................................................................................... 7-4

7.3.1 Features .................................................................................................................. 7-4

7.3.2 Functions of image processing circuit ...................................................................... 7-5

7.4 LGC Board (PWA-F-LGC-360) ........................................................................................... 7-9

7.4.1 Features .................................................................................................................. 7-9

7.4.2 Functions of image processing circuit ....................................................................... 7-9

7.5 Laser Driving PC Board .................................................................................................... 7-10

8. LASER OPTICAL UNIT .................................................................................................. 8-1

8.1 General Description ............................................................................................................ 8-1

8.2 Structure ............................................................................................................................. 8-3

8.3 Laser Diode ........................................................................................................................ 8-7

8.4 Laser Optical Unit Cooling Fan ........................................................................................... 8-8

8.5 Polygonal Motor .................................................................................................................. 8-8

8.6 Disassembly and Replacement .......................................................................................... 8-9

e-STUDIO3511/4511 CONTENTS ii November 2003 © TOSHIBA TEC

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9. PAPER FEEDING SYSTEM ........................................................................................... 9-1

9.1 Functions ............................................................................................................................ 9-1

9.2 Operation ............................................................................................................................ 9-5

9.2.1 Operation of bypass pickup roller ............................................................................ 9-5

9.2.2 Operation of drawer pickup roller ............................................................................ 9-5

9.2.3 Separation of paper ................................................................................................... 9-6

9.2.4 General operation ................................................................................................... 9-7

9.3 Drive Circuit of Tray-up Motor ............................................................................................. 9-9

9.4 Disassembly and Replacement ........................................................................................ 9-10

10. DRIVE SYSTEM .......................................................................................................... 10-1

10.1 General Description ........................................................................................................ 10-1

10.2 Functions ........................................................................................................................ 10-1

10.3 Main Motor...................................................................................................................... 10-2

10.3.1 Main motor drive ................................................................................................... 10-2

10.3.2 Control signals ...................................................................................................... 10-3

10.4 Disassembly and Replacement ....................................................................................... 10-4

11. DRUM RELATED SECTION ....................................................................................... 11-1

11.1 Configuration .................................................................................................................... 11-1

11.2 Functions ......................................................................................................................... 11-2

11.3 Output Control Circuits of High-Voltage Transformer ....................................................... 11-5

11.3.1 Overview .............................................................................................................. 11-5

11.3.2 Description of operations ...................................................................................... 11-5

11.4 Drum Temperature Detection Circuit .............................................................................. 11-7

11.5 Temperature/Humidity Sensor ........................................................................................ 11-8

11.5.1 General description ............................................................................................... 11-8

11.5.2 Construction .......................................................................................................... 11-8

11.6 Disassembly and Replacement ...................................................................................... 11-9

12. DEVELOPMENT SYSTEM ......................................................................................... 12-1

12.1 Configuration ................................................................................................................... 12-1

12.2 Functions ......................................................................................................................... 12-2

12.3 Drive Circuit of Toner Motor ............................................................................................. 12-3

12.4 Auto-Toner Circuit ............................................................................................................ 12-4

12.4.1 General description ............................................................................................... 12-4

12.4.2 Function of auto-toner sensor ............................................................................... 12-5

12.4.3 Adjustment using the temperature / humidity sensor ............................................ 12-7

12.4.4 Adjustment using the drum thermistor .................................................................. 12-7

12.5 Disassembly and Replacement ....................................................................................... 128

13. FUSER UNIT / PAPER EXIT SECTION ...................................................................... 13-1

13.1 General Description .......................................................................................................... 13-1

13.2 Operation ......................................................................................................................... 13-1

13.3 Functions .......................................................................................................................... 13-2

November 2003 © TOSHIBA TEC iii e-STUDIO3511/4511 CONTENTS

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13.4 Heater Control Circuit ..................................................................................................... 13-4

13.4.1 Configuration ........................................................................................................ 13-4

13.4.2 Heating principle of IH Heater ............................................................................... 13-5

13.4.3 IH control circuit interface .................................................................................... 13-6

13.4.4 Relation between system configuration and IH output .......................................... 13-7

13.4.5 Temperature detection section ............................................................................. 13-8

13.4.6 Abnormality in the IH control circuit .................................................................... 13-13

13.5 Control Circuit of Exit Motor .......................................................................................... 13-15

13.6 Exit Motor Drive ............................................................................................................ 13-15

13.7 Disassembly and Replacement .................................................................................... 13-16

14. AUTOMATIC DUPLEXING UNIT (ADU) .................................................................... 14-1

14.1 General Description ........................................................................................................ 14-1

14.2 Description of Operations ............................................................................................... 14-2

14.3 Drive of ADU................................................................................................................... 14-8

14.4 Flow Chart ...................................................................................................................... 14-9

14.5 Disassembly and Replacement .................................................................................... 14-11

15. POWER SUPPLY UNIT .............................................................................................. 15-1

15.1 Construction ................................................................................................................... 15-1

15.2 Operation of DC Output Circuits ..................................................................................... 15-1

15.3 Output Channel .............................................................................................................. 15-2

15.4 Fuse ............................................................................................................................... 15-4

15.5 Configuration of Power Supply Unit ................................................................................ 15-5

15.6 Sequence of Power Supply............................................................................................. 15-6

15.7 AC Wire Harness ............................................................................................................ 15-7

16. PC BOARDS............................................................................................................... 16-1

e-STUDIO3511/4511 CONTENTS iv November 2003 © TOSHIBA TEC

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1. SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES

1.1 Specifications

Values in [ ] are for e-STUDIO450 in case that the specification is different between e-STUDIO350 and

e-STUDIO450.

• Copy process Indirect electrophotographic process (dry)

• Type Desktop type (console type:when paper feed pedestal (PFP) and large capac-

ity feeder (LCF) are installed)

• Original table Fixed type (the left rear corner used as guide to place originals)

• Accepted originals Sheet, book and 3-dimensional object. The reversing automatic document

feeder (RADF) only accepts paper which are not pasted or stapled. (Single-

sided originals: 50 to 127 g/m2/13 to 34lb. Bond, Double-sided originals: 50

to105 g/m2/13 to 28 lb. Bond) Carbon paper are not acceptable either.

Maximum size : A3/LD

• Copy speed (Copies/min.)

e-STUDIO350

Paper supply

Paper size

A4, LT, B5

A4-R, B5-R,

A5-R, LT-R, ST-R

B4, LG

A3, LD

Drawer

Size specified

Bypass feed

Size not specified

PFP

LCF

–

e-STUDIO450

Paper supply

Paper size

A4, LT, B5

A4-R, B5-R,

A5-R, LT-R, ST-R

B4, LG

A3, LD

“–” means “Not acceptable”.

The copy speed in the above table are available when originals are manually placed for single side,

Drawer

Size specified

Bypass feed

Size not specified

PFP

LCF

–

multiple copying.

When the RADF is used, the copy speed of 35[45] sheets per minute is only available under the

following conditions:

• Original/Mode: Single side original/A4/LT size. APS/automatic density are not selected.

• Number of sheets: 35[45] or more.

• Paper feeding: LCF

• Reproduction ratio: 100%

November 2003 © TOSHIBA TEC 1 - 1 e-STUDIO350/450 SPECIFICATIONS

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* System copy speed

Copy mode

Single-sided originals

↓

Single-sided copies

Single-sided originals

↓

Double-sided copies

Double-sided originals

↓

Double-sided copies

Double-sided originals

↓

Single-sided copies

• Copy paper

1 set

3 sets

5 sets

1 set

3 sets

5 sets

1 set

3 sets

5 sets

1 set

3 sets

5 sets

Sec.

e-STUDIO350

20.85

57.95

91.20

27.42

62.18

97.55

55.47

126.21

196.93

48.22

117.44

184.96

e-STUDIO450

17.49

46.68

73.50

25.71

57.41

89.03

54.68

118.07

181.36

48.20

102.18

155.06

The system copy speed, including

scanning time, is available when 10

sheets of A4/LT size original are

set on RADF and one of the copy

modes in the left table is selected.

The period of time from pressing

[START] to the paper exit com-

pletely out of the equipment based

on the actually measured value.

Upper drawer is selected and

copying is at the non-sort mode.

Automatic copy density, APS/AMS

are turned off.

Finisher is not installed.

Drawer ADU PFP LCF Bypass copy Remarks

Size A3 to A5-R A3 to A5-R,LD to ST-R

LD to ST-R A4, LT (Non-standard or user-

specified sizes can be set.)

Weight

64 to 105 g/m

17 to 28 lb.

Special Tracing paper, labels,

paper – OHP film (thickness: 80 µm

• First copy time ................... e-STUDIO350: Approx. 3.9sec. or less

e-STUDIO450: Approx. 3.9sec. or less

(A4/LT, upper drawer, 100%, original placed manually)

• Warming-up time ............... Approx. 20 seconds (temperature: 20°C)

• Multiple copying ................. Up to 999 copies; Key in set numbers

• Reproduction ratio ............. Actual ratio: 100±0.5%

Zooming: 25 to 400% in increments of 1%

• Resolution/Gradation .........Scanning: 600 dpi x 600 dpi

64 to 209 g/m2,17 to 55 lb.

(Continuous feeding)

50 to 209 g/m2, 13 to 55 lb.

(Single paper feeding)

or thicker)

(25 to 200% when using RADF)

These special papers recommended by Toshiba Tec

........ Printing: Equivalent to 2400 dpi x 600 dpi

........ Gradation: 256 steps

e-STUDIO350/450 SPECIFICATIONS 1 - 2 November 2003 © TOSHIBA TEC

Page 11

• Eliminated portion ............. Leading edges : 3.0±2.0 mm, Side/trailing edges : 2.0±2.0 mm (copy)

Leading / trailing edges : 5.0±2.0 mm, Side edges : 5.0±2.0 mm (print)

• Paper feeding .................... Automatic feeding : Standard drawers–2 drawers (stack height 60.5

mm, equivalent to 550 sheets; 64 to 80 g/m2 (17 to

22 lb.))

PFP–Option (One drawer or two : stack height

60.5 mm, equivalent to 550 sheets; 64 to 80 g/m

(17 to 22 lb.))

LCF–Option (Stack height 137.5 mm x 2: equivalent

to 2500 sheets; 64 to 80 g/m2 (17 to 22 lb.))

Bypass feeding: (Stack height 11 mm : equivalent to 100 sheets; 64 to

80 g/m2 (17 to 22 lb.))

• 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 16mm or less)

• Automatic duplexing unit ... Stackless, Switchback type

• Toner supply ...................... Automatic toner density detection/supply

Toner cartridge replacing method

• Density control .................. Automatic density mode and manual density mode selectable in 11 steps

• Weight ............................... 83 kg, 183 lb

• Power requirements ..........AC 110V (±10%) / 13.2A, 115V (±10%) or 127V (±10%) / 12A

220-240V (±10%) or 240V (±10%) / 8A

• Power consumption ........... 1.5 kW or less (115V series, 200V series)

The electric power is supplied to the RADF, Finisher, Job Separator, Offset Tray, PFP and LCF

through the equipment.

• Total counter ...................... Electronical counter

November 2003 © TOSHIBA TEC 1 - 3 e-STUDIO350/450 SPECIFICATIONS

Page 12

• Dimensions of the equipment ...... See the figure below (W660 x D718 x H739 mm)

* When the tilt angle of the control panel is 45 degrees.

Fig. 1-101

e-STUDIO350/450 SPECIFICATIONS 1 - 4 November 2003 © TOSHIBA TEC

Page 13

1.2 Accessories

Unpacking/setup instruction 1 set

Operator’s manual 4 pcs. (except for MJD)

Operator's manual pocket 1 pc.

Power cable 1 pc.

Warranty sheet 1 pc. (for NAD)

Setup report 1 set (for NAD and MJD)

Customer satisfaction card 1 pc. (for MJD)

PM sticker 1 pc. (for MJD)

Drum (installed inside of the equipment) 1 pc.

Toner bag 1 pc.

Toner cartridge 1 pc. (except for NAD,MJD)

Developer material 1 pc. (except for NAD,MJD)

Operation panel stopper 1 pc.

Blind seal 4 pcs.

Rubber plug 4 pcs.

CD-ROM 5 pcs.

* Machine version

NAD: North America

MJD: Europe

AUD: Australia

ASD: Asia

TWD: Taiwan

SAD: Saudi Arabia

JPD: Japan

CND: China

November 2003 © TOSHIBA TEC 1 - 5 e-STUDIO350/450 SPECIFICATIONS

Page 14

1.3 Options

Platen Cover KA-3511 PC/PC-C

Reversing Automatic Document Feeder (RADF) MR-3015

Drawer Module MY-1021 /-C

Paper Feed Pedestal (PFP) KD-1011 /-C

Large capacity feeder (LCF) KD-1012 A4/LT/A4-C

Finisher (Hanging type) MJ-1022 /-C

Finisher (Console type) MJ-1023 /-C

Finisher (Console saddle stitcher type) MJ-1024 /-C

Hole Punch Unit MJ-6004 N/E/F/S *1

Staple Cartridge STAPLE-1600 (for MJ-1022)

STAPLE-2000 (for MJ-1023/1024)

STAPLE-600 (for MJ-1024)

Bridge Kit KN-3520 /-C

Job Separator MJ-5004 /-C

Offset Tray MJ-5005 /-C

Key Counter MU-8, MU-10

Work Tray KK-3511

Damp Heater MF-3520 U/E

Fax Board GD-1150 NA/AU/EU/TW/C/AS

2nd Line for Fax Board GD-1160 NA/EU/TW/C

Wireless LAN Adapter GN-1010

PCI Slot GO-1030

Scrambler Board GP-1030

Printer Kit GM-1010

Printer/Scanner Kit GM-2010

Scanner upgrade Kit GM-3010

Desk MH-1700

* 1) N : North America E : Europe F : France S : Sweden

Notes:

1. The bridge unit (KN-3511) is necessary for installation of the finisher (MJ-1022, MJ-1023 or MJ-

1024).

2. The finisher (MJ-1023 or MJ-1024) is necessary for installation of the hole punch unit (MJ-

6004N/E/F/S).

3. The PCI slot (GO-1030) is necessary for installation of the scrambler board (GP-1030).

e-STUDIO350/450 SPECIFICATIONS 1 - 6 November 2003 © TOSHIBA TEC

Page 15

1.4 Supplies

Drum OD-3500

Toner bag PS-TB3520 /E/N *2

Toner cartridge PS-ZT3520 /T/D/C/E *3

Developer D-3500

* 2) N : Asia E : Europe NONE : North America

* 3) T : Taiwan D : Asia C : China E : Europe NONE : North America

November 2003 © TOSHIBA TEC 1 - 7 e-STUDIO350/450 SPECIFICATIONS

Page 16

1.5 System List

KA-3511

Platen Cover

)

RADF

(

MR-3015

Document Feeder

Reversing Automatic

KK-3511

Work Tray

Key Counter

MU-8, MU-10

KN-3520

Bridge Kit

Damp Heater

MF-3520 U/E

MJ-5004

Job Separator

GM-1010

Printer Kit

MJ-5005

Offset Tray

Printer/

GM-2010

Scanner Kit

Scanner

GM-3010

Upgrade Kit

Adapter

GN-1010

Wireless LAN

PCI Slot

GO-1030

GD-1160

FAX Board

2nd Line for

NA/EU/TW/C

Desk

MH-1700

Feeder (LCF)

Large Capacity

KD-1012 A4/LT

KD-1011

Paper Feed

Pedestal (PFP)

MY-1021

Drawer Module

Board

GP-1030

Scrambler

Hole Punch Unit

MJ-6004 N/E/F/S

)

Finisher

MJ-1022

Hanging type

(

e-STUDIO350/450 SPECIFICATIONS 1 - 8 November 2003 © TOSHIBA TEC

STAPLE-1600

Staple Cartridge

STAPLE-2000

Staple Cartridge

)

Finisher

Console type

(

Fig. 1-501

MJ-1023

GD-1150

TW/C/AS

FAX Board

NA/AU/EU/

Finisher

stitcher type)

Console saddle

(

MJ-1024

STAPLE-600

Staple Cartridge

Page 17

2. OUTLINE OF THE MACHINE

2.1 Sectional View

70 71

11 72

53 22

678

46 47

56,59 57 58

20,21

61 6263 64

27 28

52 41 31

67 66 40 29 42 55 23 23 32 24 30 25

3334

November 2003 © TOSHIBA TEC 2 - 1 e-STUDIO350/450 OUTLINE OF THE MACHINE

4950

20,21

Fig. 2-101

Page 18

Original glass

ADF original glass

Mirror-1

Mirror-2

Mirror-3

Reflector

Lens

Exposure lamp

Automatic original detection sensor

Toner cartridge switch

Laser unit

Laser unit cooling fan

Drawer pickup roller

Drawer feed roller

Drawer separation roller

Drawer transport roller

Drawer

Drawer tray

Drawer tray-up sensor

Drawer empty sensor

Drawer paper stock sensor

Drawer damp heater (JPD only)

Registration roller

Registration sensor

Upper drawer feed sensor

Lower drawer feed sensor

Exit sensor

ADU upper transport roller

ADU middle transport roller

ADU lower transport roller

ADU entrance sensor

ADU exit sensor

Bypass pickup roller

Bypass feed roller

Bypass separation roller

Bypass tray

Bypass paper sensor

Bypass feed sensor

Temperature/humidity sensor

Transfer charger

Separation charger

Drum

Developer unit

Cleaning blade

Recovery blade

Main charger

Discharge LED

Drum thermistor

Drum damp heater thermostat

Drum damp heater

Separation finger for drum

Toner bag full detection sensor-2

Auto-toner sensor

Toner recovery auger

Developer sleeve (magnetic roller)

Heat roller

Pressure roller

Cleaning roller

IH coil

Main thermistor / Edge thermistor

Separation finger for heat roller

Separation finger for pressure roller

Exit roller

Fuser thermostat

Middle fan

Exhaust fan

Sub-separation fan

Power supply cooling fan

Main switch

Front cover opening/closing switch

Cover opening/closing interlock switch

Polygonal motor

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 2 November 2003 © TOSHIBA TEC

Page 19

11 10

24 26

November 2003 © TOSHIBA TEC 2 - 3 e-STUDIO350/450 OUTLINE OF THE MACHINE

Fig. 2-102

27 26

Page 20

Platen sensor

Scan motor

Carriage home position sensor

Scanner damp heater (Left)

Scanner damp heater (Right)

Scanner damp heater thermostat

IH board cooling fan

Developer unit cooling fan-1

Toner motor

Developer drive clutch

Main motor

Exit motor

Toner bag full detection sensor-1

ADU opening/closing switch

Fuser unit cooling fan

Registration clutch

ADU motor

ADU clutch

Bypass pickup solenoid

Bypass feed clutch

Side cover opening/closing switch

Transport clutch (High speed)

Transport clutch (Low speed)

Lower drawer feed clutch

Tray-up motor

Drawer detection switch

Upper drawer feed clutch

Developer unit cooling fan-2

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 4 November 2003 © TOSHIBA TEC

Page 21

2.2 Electric Parts Layout

[A] Unit construction

Drive unit

PC board unit

Scanner unit

Control panel unit

Fuser unit

Automatic duplexing unit

Bypass unit

Transport unit

Process unit

Laser unit

Paper feeder unit

Fig. 2-201

November 2003 © TOSHIBA TEC 2 - 5 e-STUDIO350/450 OUTLINE OF THE MACHINE

Front side

Page 22

[B] Scanner unit

(B-1) Motor, sensor, lamp

A4 series

LT series

EXP

Fig. 2-202-1

Front side

EXP

Fig. 2-202-2

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 6 November 2003 © TOSHIBA TEC

Front side

Page 23

(B-2) PC board, heater, thermostat, other part

THMO2*

DH1*

INV

* ASD/AUD/CND/SAD/TWD models : Standard

NAD/MJD models : Option

DH2*

CCD

SLG

Front side

Fig. 2-203

[C] Control panel unit

DSP

KEY

LCD

Front side

Fig. 2-204

November 2003 © TOSHIBA TEC 2 - 7 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 24

[D] Process unit

(D-1) Motor, sensor, switch, PC board

LRL

S32

S31

S30

Fig. 2-205

S12

S10

Front side

(D-2) Motor, sensor, lamp, heater, thermistor, thermostat

THMO3*

M16

* ASD/AUD/CND/SAD/TWD models : Standard

NAD/MJD models : Option

ERS

THM3

S11

DH3*

Front side

Fig. 2-206

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 8 November 2003 © TOSHIBA TEC

Page 25

[E] Laser unit

SNS

[F] Paper feeder unit

S23

S21

S22

S20

Fig. 2-207

CLT1

LDR

Front side

CLT2

S16

S18

S17

S19

Front side

Fig. 2-208

November 2003 © TOSHIBA TEC 2 - 9 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 26

[G] Transport unit

S13

S14

S33

M10

M11

S15

[H] Bypass unit

Front side

Fig. 2-209

SFB

CLT3

SOL1

S24

S25

Fig. 2-210

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 10 November 2003 © TOSHIBA TEC

Front side

Page 27

[I] Automatic duplexing unit

S26

ADU

S27

[J] Fuser unit

S28

CLT4

Front side

Fig. 2-211

THMO1

S29

M12

IH-COIL

THM1

THM2

Front side

Fig. 2-212

November 2003 © TOSHIBA TEC 2 - 11 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 28

[K] Drive unit

M13

M15

CLT5

M14

CLT6

CLT7

CLT8

HVT

Front side

Fig. 2-213

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 12 November 2003 © TOSHIBA TEC

Page 29

[L] PC board unit

LGC

SYS

HDD

NIC

FIL or FUS*

* NAD/SAD/TWD models : FIL (Standard)

ASD/AUD/CND models : FUS (Standard)

MJD model : FUS (Option)

BRK

Front side

Fig. 2-214

November 2003 © TOSHIBA TEC 2 - 13 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 30

2.3 Symbols and Functions of Various Components

The column "P-I" shows the page and item number in the parts list.

(1) Motors

Symbol

M10

M11

M12

M13

M14

M15

M16

Name

SCAN-MOT

Scan motor

M/DC-POL

Polygonal motor

ADU-MOT

ADU motor

EXIT-MOT

Exit motor

MAIN-MOT

Main motor

TRY-MOT

Tray-up motor

TNR-MOT

Toner motor

LSU-FAN-MOT

Laser unit cooling fan

MID-FAN-MOT

Middle fan

EXIT-FAN-MOT

Exhaust fan

SP-FAN-MOT

Sub-separation fan

FUS-FAN-MOT

Fuser unit cooling fan

IH-FAN-MOT

IH board cooling fan

DEV-FAN-MOT1

Developer unit cooling fan-1

DEV-FAN-MOT2

Developer unit cooling fan-2

PS-FAN-MOT

Power supply cooling fan

Function

Driving the carriages

Driving the polygonal mirror

Driving the automatic duplexing unit

Driving the exit roller

Driving the drum, developer unit, fuser

unit, registration roller, transport

rollers, feed rollers and pickup rollers

Driving the lifting movement of trays in

upper/lower drawer

Supplying the toner

Cooling down the laser unit

Cooling down the inside of the

equipment

Exhausting ozone

Assisting the paper separation process

(Absorbing the paper from the drum)

Cooling down the fuser unit

Cooling down the IH board

Cooling down the developer unit

Cooling down the power supply unit

Remarks

B-1

D-1

D-2

P- I

P13 - I8

P9 - I5

P32 - I18

P6 - I20

P12 - I26

P4 - I26

P28 - I9

P9 - I3

P11 - I2

P30 - I13

P7 - I12

P6 - I18

P6 - I39

P9 - I7

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 14 November 2003 © TOSHIBA TEC

Page 31

(2) Sensors and switches

Symbol

S1-5

S10

S11

S12

S13

S14

S15

S16

S17

S18

S19

S20

S21

Name

APS1-3, APS-C, APS-R

Automatic original detection sensor

HOME-SNR

Carriage home position sensor

PLTN-SNR

Platen sensor

TNR-SW

Toner cartridge switch

USD-TNR-FLL-SNR1

Toner bag full detection sensor-1

USD-TNR-FLL-SNR2

Toner bag full detection sensor-2

ATTNR-SNR

Auto-toner sensor

TEMP/HUMI-SNR

Temperature/humidity sensor

RGST-SNR

Registration sensor

FED-U-SNR

Upper drawer feed sensor

FED-L-SNR

Lower drawer feed sensor

CST-U-TRY-SNR

Upper drawer tray-up sensor

CST-L-TRY-SNR

Lower drawer tray-up sensor

EMP-U-SNR

Upper drawer empty sensor

EMP-L-SNR

Lower drawer empty sensor

NEMP-U-SNR

Upper drawer paper stock sensor

NEMP-L-SNR

Lower drawer paper stock sensor

Function

Original size detection

Carriage home position detection

Opening/closing detection of platen

cover or RADF

Toner cartridge presence/absence

detection

Detecting if the used toner is full in the

toner bag

Detecting the presence/absence of

the toner bag

Used toner amount defection in the

toner bag

Detecting the density of toner in the

developer unit

Detecting the temperature and

humidity inside of the equipment

Detecting the paper transport at the

registration roller section

Detecting paper jam and paper

transport at upper drawer feeding

section

Detecting paper jam and paper

transport at lower drawer feeding

section

Position detection of the lifting tray of

the upper drawer

Position detection of the lifting tray of

the lower drawer

Paper presence/absence detection in

the upper drawer

Paper presence/absence detection in

the lower drawer

Paper amount detection in the upper

drawer

Paper amount detection in the lower

drawer

Remarks

B-1

D-1

D-2

D-1

P-I

S1-4:P10 - I12

S-5:P10 - I13

P10 - I17

P13 - I10

P28 - I23

P12 - I28

P25 - I59

P26 - I19

P5 - I15

P19 - I11

P19 - I5

P14 - I30

November 2003 © TOSHIBA TEC 2 - 15 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 32

Symbol

S22

S23

S24

S25

S26

S27

S28

S29

S30

S31

S32

S33

CST-U-SW

Upper drawer detection switch

CST-L-SW

Lower drawer detection switch

SFB-SNR

Bypass paper sensor

SFB-FED-SNR

Bypass feed sensor

ADU-SET-SW

ADU opening/closing switch

ADU-TRU-SNR

ADU entrance sensor

ADU-TRL-SNR

ADU exit sensor

EXIT-SNR

Exit sensor

MAIN-SW

Main switch

FRNT-COV-SW

Front cover opening/closing switch

COV-INTLCK-SW

Cover opening/closing interlock switch

SIDE-COV-SW

Side cover opening/closing switch

Name

Function

Detecting presence/absence of the

upper drawer

Detecting presence/absence of the

lower drawer

Detecting presence/absence of paper

on the bypass tray

Detecting the transporting paper fed

from the bypass tray

Automatic duplexing unit opening/

closing detection

Detecting the transporting paper at

automatic duplexing unit entrance

section

Detecting the transporting paper in

automatic duplexing unit

Detecting the transporting paper at

the exit section

Turning ON/OFF of the equipment

Detecting opening/closing of the front

cover

Controlling cutoff and supply of the

24V voltage by opening/closing of the

front cover or jam access cover

Side cover opening/closing detection

Remarks

D-1

P-I

P4 - I101

P18 - I5

P32 - I43

P32 - I31

P31 - I21

P5 - I10

P5 - I7

P5 - I19

P19 - I2

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 16 November 2003 © TOSHIBA TEC

Page 33

(3) Electromagnetic clutches

Symbol

CLT1

CLT2

CLT3

CLT4

CLT5

CLT6

CLT7

CLT8

Name

CST-U-FEED-CLT

Upper drawer feed clutch

CST-L-FEED-CLT

Lower drawer feed clutch

SFB-FEED-CLT

Bypass feed clutch

ADU-CLT

ADU clutch

RGST-CLT

Registration clutch

DEV-CLK

Developer drive clutch

CST-TR-L-CLT

Transport clutch (Low speed)

CST-TR-H-CLT

Transport clutch (High speed)

Function

Driving the upper drawer pickup roller

Driving the lower drawer pickup roller

Driving the bypass pickup roller and

bypass feed roller

Driving the automatic duplexing unit

Driving the registration roller

Driving the magnetic roller of the

developer unit

Driving the transport roller

(Low speed)

Driving the transport roller

(High speed)

Remarks

P-I

P14 - I29

P17 - I20

P32 - I16

P19 - I31

P12 - I36

P15 - I20

P15 - I16

(4) Solenoids

Symbol

SOL1

SFB-SOL

Bypass pickup solenoid

Name

Function

Driving the bypass pickup roller

Remarks

P-I

P18 - I11

November 2003 © TOSHIBA TEC 2 - 17 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 34

(5) PC boards

Symbol

CCD

SLG

DSP

KEY

LRL

LDR

SNS

SFB

ADU

SYS

LGC

NIC

FIL

FUS

PWA-F-CCD

CCD driving PC board (CCD board)

PWA-F-SLG

Scanning section control PC board

(SLG board)

PWA-F-DSP

Display PC board (DSP board)

PWA-F-KEY

Key control PC board (KEY board)

PWA-F-LRL

Laser control signal relay PC board

(LRL board)

PWA-F-LDR

Laser driving PC board (LDR board)

PWA-F-SNS

H-sync signal detection PC board

(SNS board)

PWA-F-SFB

Bypass tray slide guide width detection

PC board (SFB board)

PWA-F-ADU

ADU driving PC board (ADU board)

PS-IH

IH control PC board (IH board)

PWA-F-SYS

System control PC board (SYS board)

PWA-F-LGC

Logic PC board (LGC board)

PWA-F-NIC

NIC board

PWA-F-FIL

Filter PC board (FIL board)

PWA-F-FUS

Fuse PC board (FUS board)

Name

Function

Controlling CCD and outputting the

analog signal

Controlling the original scanning

section and RADF

Controlling LCD and the touch panel

on the control panel

Detecting the button entry and

controlling LED on the control panel

Relaying the control signals of the

laser unit

Driving the laser diode

Detection of the laser beam position

Detection of the bypass tray slide

guide width

Controlling the automatic duplexing

unit

Controlling each IH coil in the fuser

unit

Controlling the whole system and

image processing

Controlling the print engine section

Network connection interface

Cutting noise of the AC power

Power supplying to each damp heater

*NAD/SAD/TWD models: Standard

Supplying the power to each damp

heater

*ASD/AUD/CND models: Standard

*MJD model: Option

Remarks

B-2

D-1

P-I

P10 - I10

P10 - I38

P3 - I26

P3 - I25

P9 - I23

P9 - I5

P16 - I13

P32 - I30

P7 - I2

P7 - I34

P8 - I7

P7 - I22

P6 - I24

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 18 November 2003 © TOSHIBA TEC

Page 35

(6) Lamps and heaters

Symbol

EXP

ERS

IH-COIL

DH1

DH2

DH3

Name

LP-EXPO

Exposure lamp

LP-ERS

Discharge LED

IH-COIL

IH coil

SCN-L-DH

Scanner damp heater (Left)

SCN-R-DH

Scanner damp heater (Right)

DRM-DH

Drum damp heater

Function

Exposing the original to the light

Removing the residual charge from

the drum surface

Heating the fuser roller

Preventing condensation of the

mirrors of the carriages

*ASD/AUD/CND/SAD/TWD models:

Standard

*NAD/MJD models: Option

Preventing condensation of the lens

*ASD/AUD/CND/SAD/TWD models:

Standard

*NAD/MJD models: Option

Preventing condensation of the drum

*ASD/AUD/CND/SAD/TWD models:

Standard

*NAD/MJD models: Option

Remarks

B-1

D-2

B-2

D-2

P-I

P21 - I6

P25 - I33

P31 - I23

P10 - I22

P10 - I32

P27 - I7

(7) Thermistors and thermostats

Symbol

THM1

THM2

THM3

THMO1

THMO2

THMO3

THMS-C-HTR

Main thermistor

THMS-S-HTR

Edge thermistor

THMS-DRM

Drum thermistor

THERMO-FSR

Fuser thermostat

THERMO-SCN-DH

Scanner damp heater thermostat

THERMO-DRM-DH

Drum damp heater thermostat

Name

Function

Detecting the surface temperature at

the center part of the fuser roller

Detecting the surface temperature at

the edge of the fuser roller

Detecting the temperature at the drum

surface

Preventing overheating in the fuser

unit

Controlling the temperature of the

scanner damp heater

Controlling the temperature of the

drum damp heater

Remarks

D-2

B-2

D-2

P-I

P29 - I10

P26 - I29

P29 - I9

P10 - I22

P27 - I7

November 2003 © TOSHIBA TEC 2 - 19 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 36

(8) Transformer

Symbol

HVT

PS-HVT

High-voltage transformer

Name

Function

Generating high-voltage and supply-

ing it to the following sections

• Main charger wire

• Main charger grid

• Developer bias

• Transfer bias

• Separation bias

Remarks

P-I

P4 - I29

(9) Others

Symbol

INV

LCD

HDD

BRK

INV-EXP

Inverter board

LCD

LCD panel

PS-ACC

Switching power supply

HDD

Hard disk

NS-FIL

Noise filter

BREAKER

Breaker

Name

Function

Controlling the exposure lamp

Displaying and entering each informa-

tion

Generating DC voltage and supplying

it to each section of the equipment

Storing the program data and image

data

Cutting noise of AC power

Preventing the inflow of overcurrent to

the equipment

Remarks

B-2

D-2

P-I

P21 - I7

P3 - I19

P9 - I7

P7 - I25

P6 - I13

P6 - I14

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 20 November 2003 © TOSHIBA TEC

Page 37

2.4 General Description

2.4.1 System block diagram

Laser diode

SNS

LRL Laser unit

LGCSYSSLGCCD

LDR

Laser beam sensor

ASIC

RS-232C

Finisher

Download jig

Bus transceiver

Data-bus

512KB

)

32MB

SDRAM

Page memory

ASIC

(

NVRAM

256KB

Flash ROM

24MHz

Engine-CPU

Data-bus

PCI-bus

Bridge unit

IPC

SRAM

128KB

888

8KB

NVRAM

ASIC

266MHz

3232

System-CPU

Job separator/Offset tray

Clutches

Sensors Solenoids

Switches

I/O

HVT

ADU Motors

Bypass

unit

Key copy

counter

Copy key

PFP/LCF

Data-bus

Bus transceiver

SRAM

512KB

Battery

RTC

ASIC

card

)

DIMM

128MB

(

Main memory

Flash ROM

32 32

Flash ROM

32 16

4MB x 2

2MB x 2

Option

Download jig

)

NIC

IEEE-1284

Parallel port

(

LAN connector

Printer kit,

Printer/Scanner kit,

Scanner upgrade kit

ASIC

FAX

)

NCU

NCU LINE-1 (

PSTN

10BASE-T/100BASE-TX

(

PSTN

External TEL

)

LINE-2

(

Modem

)

Odd (

A/D

Amp

ASIC

CCD

Motors

22MHz

16168

Scanner-CPU

A/D

Data-bus

Amp

)

Even (

512KB

Flash ROM

SRAM

128KB

RADF

Download jig

Control panel

Scrambler board

PCI external slot

Scrambler board

ASIC

)

host-1

device

(

USB connector

HDD

Dongle

)

host-2 (

USB connector

Dongle

Fig. 2-401

November 2003 © TOSHIBA TEC 2 - 21 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 38

2.4.2 Construction of boards

(a) Construction diagram of boards

This system consists of the following including the SYS board as a main board.

AC input

Control panel

KEY

Scanner unit

CCD

INV

Main switch

FIL

FUS

DSP

NIC

SLG

PS-ACC

Cover opening/closing interlock switch

SYS

DC power supply line

AC power supply line

Signal line

Fig. 2-402

LRL

LGC

Laser unit

ADU

SFB

HVT

(b) Function of each board

CCD board:

This is the board to convert the reflected light by the original to electrical signals. It consists of the

CCD, and its peripheral circuitry. The CCD converts the reflected light by the original to analog signal

and outputs it to the SLG board.

LDR

SNS

SLG board:

This is the board to mainly control the scanning function (scanner unit) and consists of the Scanner-

CPU, ASIC, memory (Flash ROM and SRAM), A/D converter, driver for motor drive, etc. When

scanning the original, the exposure lamp and scan motor are driven by the command from the

Scanner-CPU. The analog signal output from the CCD board is then converted to digital signal by

the A/D converter. Image processing is performed by ASIC.

INV board:

This is the board on which the lighting control circuit of the exposure lamp is mounted. The exposure

lamp lights by the command from the Scanner-CPU.

DSP board:

This is the board to mainly control the control panel. The panel processing CPU detecting the input

from each button and touch panel, and the lighting control circuit for the backlight of the LCD are

mounted. And it relays the control signal of the control panel from the SYS board to the LCD and KEY

board.

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 22 November 2003 © TOSHIBA TEC

Page 39

KEY board:

This is the board on which each button switch and each LED on the control panel are mounted.

LDR board:

This is the board on which the laser diode and the ASIC are mounted. The laser is emitted based on

the output image data signal from the ASIC on the LGC board.

SNS board:

This is the board on which the light sensor for detecting the radiating position of the laser is mounted.

It outputs the H-sync signal to ASIC on the LGC board.

LRL board:

This is the board to relay each signal transmitted between the LGC board and laser unit (LDR and

SNS boards).

SFB board:

This is the board on which the circuit pattern is printed. It detects the position of the slide guide of the

bypass unit.

ADU board:

This is the board to relay each signal between the ASIC on the LGC board and the electric parts

(motor, sensor, clutch) in the ADU.

IH board:

This is the board to generate the electric power for driving the IH coil of the fuser unit from the AC

electric power input via the switching power supply. And then it is provided.

SYS board:

This is the main board taking a leading part in all systems. It consists of the System-CPU, ASIC,

memory (DIMM, SDRAM, Flash ROM, SRAM, NVRAM), RTC (Real Time Clock IC), etc. The Sys-

tem-CPU controls each ASIC to perform the control of the image processing, image memory (page

memory, main memory, HDD), external interface (RS-232C, IEEE-1284, USB, PCI), NIC and FAX.

Based on the input data from the control panel, the System-CPU communicates with the Scanner-

CPU on the SLG board and Engine-CPU on the LGC board, and then issues an operation command

to the scanner and printer engine section.

LGC board:

This is the board to mainly control the printing function (printer engine). It consists of the Engine-

CPU, ASIC, memory (Flash ROM, SRAM, NVRAM), driver for motor drive, etc. The Engine-CPU

controls each ASIC to drive I/O (for the electrical parts) of each section in the system. It leads to the

operation of the laser unit, developer unit, drum, drawers, bypass unit, ADU, etc. Thus printing is

performed.

November 2003 © TOSHIBA TEC 2 - 23 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 40

NIC board:

This is the interface board to connect this equipment to the LAN environment (10BASE-T, 100BASE-

TX) to communicate with PCs, etc.

FIL board:

This is the board to cut off the noise of AC power from outside, and supply the driving AC power to

the damp heater for condensation prevention of each section (scanner and drum).

FUS board:

This is the board to provide the AC electric power for driving to the damp heater for preventing of the

condensation of each section (scanner and drum).

HVT:

This is the board to generate the DC high voltage from +24V to provide the bias to the section of the

main charger, developer, transfer, and separation.

PS-ACC:

This is the unit to generate each DC voltage, which is used in the equipment, from external AC

electric power input. And then it is provided to each electrical part.

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 24 November 2003 © TOSHIBA TEC

Page 41

2.5 Installation and Replacement of Covers and PC boards

2.5.1 External covers

[A] Front cover

(1) Open the front cover.

(2) Remove the toner bag.

Fig. 2-501

Fig. 2-502

(3) Pull up the hinge pin and extract it.

(4) Take off the front cover.

[B] Front left cover

(1) Open the front cover.

(2) Remove 1 screw and front left cover.

Fig. 2-503

Guide

Fig. 2-504

November 2003 © TOSHIBA TEC 2 - 25 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 42

[C] Rear cover

(1) Remove 7 screws and take off the rear cover.

Fig. 2-505

[D] Left upper cover

(1) Remove 2 screws and take off the left upper

cover.

[E] Front upper cover

(1) Take off the left upper cover

( Chapter 2.5.1 [D]).

(2) Remove 2 screws and take off the front upper

cover.

[F] Right upper cover

(1) Remove 3 screws and take off the right upper

cover.

Fig. 2-506

Fig. 2-507

Fig. 2-508

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 26 November 2003 © TOSHIBA TEC

Page 43

[G] Upper rear cover

(1) Take off the RADF or platen cover.

(2) Take off the left upper cover

( Chapter 2.5.1 [D]).

(3) Take off the right upper cover

( Chapter 2.5.1 [F]).

(4) Remove 2 screws and upper rear cover.

[H] Receiving tray

(1) Remove 2 screws and take off the receiving

tray.

Fig. 2-509

[I] Tray back cover

(1) Take off the receiving tray ( Chapter 2.5.1

[H]).

(2) Remove 1 screw and take off the receiving

tray back cover.

[J] Left cover

(1) Remove 3 screws and take off the left cover.

Fig. 2-510

Fig. 2-511

Fig. 2-512

November 2003 © TOSHIBA TEC 2 - 27 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 44

[K] Left rear cover

(1) Take off the left upper cover

( Chapter 2.5.1 [D]).

(2) Remove 3 screws and take off the left rear

cover.

Fig. 2-513

[L] IH terminal cover

(1) Open the ADU, jam access cover and fuser

unit cover.

(2) Remove 2 screws and take off the IH terminal

cover.

[M] Right front hinge cover

(1) Pull out the upper and lower drawers.

(2) Remove 2 screws and take off the right front

hinge cover.

[N] Right rear hinge cover

(1) Remove 2 screws and take off the right rear

hinge cover.

Fig. 2-514

Fig. 2-515

Fig. 2-516

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 28 November 2003 © TOSHIBA TEC

Page 45

[O] Right lower cover

(1) Take off the right rear hinge cover

( Chapter 2.5.1 [N]).

(2) Remove 2 screws and take off the right lower

cover.

[P] Right rear cover

(1) Take off the right upper cover

( Chapter 2.5.1 [F]).

(2) Take off the IH terminal cover

( Chapter 2.5.1 [L]).

(3) Take off the right rear hinge cover

( Chapter 2.5.1 [N]).

(4) Remove 2 screws and take off the right rear

cover.

Fig. 2-517

[Q] Front right cover

(1) Take off the front cover

( Chapter 2.5.1 [A]).

(2) Take off the receiving tray

( Chapter 2.5.1 [H]).

(3) Take off the right upper cover

( Chapter 2.5.1 [F]).

(4) Take off the upper drawer. Open the bypass

tray and ADU.

(5) Remove 2 screws and take off the front right

cover.

Fig. 2-518

Fig. 2-519

November 2003 © TOSHIBA TEC 2 - 29 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 46

2.5.2 PC boards

[A] Logic PC board (LGC board)

(A-1) LGC board

(1) Take off the rear cover (

Chapter 2.5.1 [C]).

(2) Loosen 8 screws and take off the LGC board

cover.

Fig. 2-520

(3) Disconnect 15 connectors and 1 connector

with lock.

(4) Remove 4 screws and release 2 locking sup-

ports. Then take off the LGC board.

(A-2) LGC board unit

(1) Take off the rear cover ( Chapter 2.5.1 [C]).

(2) Loosen 8 screws and take off the LGC board

cover.

(3) Disconnect 15 connectors, 1 connector with

lock and 1 joint connector fixed to the case.

Lock connector

Fig. 2-521

Fig. 2-522

Lock connector

Fig. 2-523

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 30 November 2003 © TOSHIBA TEC

Page 47

(4) Release all the harnesses from the harness

clamps and holders on the case.

(5) Remove 5 screws and take off the LGC board

with the whole case.

Fig. 2-524

[B] Hard disk

(1) Take off the rear cover ( Chapter 2.5.1 [C]).

(2) Loosen 9 screws and take off the SYS board

upper cover.

(3) Disconnect 2 connectors.

(4) Loosen 5 screws and take off the hard disk

with the whole SYS board lower cover.

Fig. 2-525

Fig. 2-526

Fig. 2-527

November 2003 © TOSHIBA TEC 2 - 31 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 48

(5) Remove 4 screws and take off the hard disk.

Fig. 2-528

[C] System control PC board (SYS board)

(1) Take off the rear cover ( Chapter 2.5.1 [C]).

(2) Take off the hard disk with the whole SYS

board lower cover ( Chapter 2.5.2 [B]).

(3) Disconnect 4 connectors.

(4) Release all the harnesses from harness

clamps and holders on the case.

(5) Remove 5 screws and take off the SYS board

with the whole case.

Fig. 2-529

Fig. 2-530

Fig. 2-531

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 32 November 2003 © TOSHIBA TEC

Page 49

(6) Remove 12 screws, take off the NIC board

and SYS board.

[D] Switching power supply

(1) Take off the left cover ( Chapter 2.5.1 [J]).

(2) Remove 2 screws. Disconnect 2 connectors

with lock on the front side and 1 connector

while releasing the harness from the holder

on the right side of the bracket.

SYS board

NIC board

Fig. 2-532

(3) Disconnect 3 connectors while the switching

power supply is pulled out to the front and take

off the switching power supply.

[E] Power supply cooling fan

(1) Take off the left cover ( Chapter 2.5.1 [J]).

(2) Remove 2 screws and take off the power sup-

ply cooling fan on the switching power sup-

ply.

Note:

When installing, pay attention to the direction

of the wind from the fan.

Fig. 2-533

Fig. 2-534

Fig. 2-535

November 2003 © TOSHIBA TEC 2 - 33 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 50

[F] High-voltage transformer

(1) Take off the rear cover ( Chapter 2.5.1 [C]).

(2) Disconnect 7 connectors.

(3) Remove 2 screws and release 2 locking sup-

ports. Then take off the high-voltage trans-

former.

Note:

When installing, make sure to match the col-

ors of connectors and harnesses according

to the color instruction on the board.

Fig. 2-536

[G] Noise filter

(1) Take off the rear cover and right lower cover

( Chapter 2.5.1 [C][O]).

(2) Disconnect 4 connectors. Remove 1 screw and

1 washer. Then take off the noise filter.

White Black

Fig. 2-537

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 34 November 2003 © TOSHIBA TEC

Page 51

2.6 Options

[A] MR-3015 (Reversing Automatic Document

Feeder (RADF))

(1) Turn OFF the power and unplug the power

cable.

(2) Take off the connector cover.

(3) Disconnect the connector.

Fig. 2-601

(4) Remove 2 screws on the rear side.

(5) Open the RADF.

Fig. 2-602

Fig. 2-603

Fig. 2-604

November 2003 © TOSHIBA TEC 2 - 35 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 52

(6) Remove 2 screws on the front side.

Fig. 2-605

(7) Slide the RADF backward and take off by lift-

ing it up.

[B] KD-1011 (Paper Feed Pedestal (PFP))

(1) Turn OFF the power and unplug the power

cable.

(2) Remove 7 screws and take off the rear cover

of the equipment.

Note:

Disconnect the connector of the RADF first

when the RADF is installed.

(3) Remove 1 screw and the ground wire, and then

disconnect 2 connectors (3 if the optional

damp heater is installed).

Fig. 2-606

Fig. 2-607

Connector of optional damp heater

Fig. 2-608

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 36 November 2003 © TOSHIBA TEC

Page 53

(4) Remove 2 screws and take off 2 fixing brack-

ets on the rear side.

(5) Take off the lower drawer of the equipment and

PFP upper drawer.

Fig. 2-609

(6) Remove 4 screws and take off 2 fixing brack-

ets on the front side.

(7) Lift up the equipment and take off the PFP.

Fig. 2-610

Fig. 2-611

Fig. 2-612

November 2003 © TOSHIBA TEC 2 - 37 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 54

[C] KD-1012 (Large Capacity Feeder (LCF))

(1) Turn OFF the power and unplug the power

cable.

(2) Remove 7 screws and take off the rear cover

of the equipment.

Note:

Disconnect the connectors of the RADF first

when the RADF is installed.

Fig. 2-613

(3) Remove 1 screw and the ground wire, and

then disconnect 2 connectors (3 if the optional

damp heater is installed).

Connector of optional damp heater

(4) Remove 2 screws and take off 2 fixing brack-

ets on the rear side.

(5) Take off the lower drawer of the equipment.

Fig. 2-614

Fig. 2-615

Fig. 2-616

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 38 November 2003 © TOSHIBA TEC

Page 55

(6) Pull out the LCF drawer.

(7) Remove 4 screws and take off 2 fixing brack-

ets on the front side.

Fig. 2-617

(8) Lift up the equipment and take off the LCF.

Fig. 2-618

Fig. 2-619

November 2003 © TOSHIBA TEC 2 - 39 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 56

[D] MJ-1022 (Hanging finisher)

(D-1) When PFP/LCF is not installed

(1) Turn OFF the power and unplug the power

cable.

(2) Take off the connector cover and disconnect

the connector.

Fig. 2-620

(3) Remove 2 screws and take off the safety

bracket on the rear side and the cover.

(4) Remove 2 screws and take off the safety

bracket on the front side and the cover.

(5) Remove 2 screws.

Fig. 2-621

Fig. 2-622

Fig. 2-623

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 40 November 2003 © TOSHIBA TEC

Page 57

(6) Lift up the finisher and take it off.

(D-2) When PFP/LCF is installed

(1) Turn OFF the power and unplug the power

cable.

(2) Take off the connector cover and disconnect

the connector.

Fig. 2-624

(3) Remove 2 screws and take off the cover on

the rear side.

(4) Remove 2 screws and take off the cover on

the front side.

Fig. 2-625

Fig. 2-626

Fig. 2-627

November 2003 © TOSHIBA TEC 2 - 41 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 58

(5) Remove 2 screws.

Fig. 2-628

(6) Lift up the finisher and take it off.

[E] MJ-1023 (Console finisher)

(1) Turn OFF the power and unplug the power

cable.

(2) Take off the connector cover and disconnect

the connector.

(3) Remove 1 screw and take off the finisher lower

cover.

Fig. 2-629

Fig. 2-630

Fig. 2-631

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 42 November 2003 © TOSHIBA TEC

Page 59

(4) Remove 3 screws and take off the finisher front

cover.

(5) Remove 1 screw.

Fig. 2-632

(6) Remove 1 screw and take off the cover of the

finisher rear side.

(7) Remove 1 screw.

Fig. 2-633

Fig. 2-634

Fig. 2-635

November 2003 © TOSHIBA TEC 2 - 43 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 60

(8) Take off the finisher.

Note:

Be careful not to fell the finisher when moving

the finisher unit only.

Fig. 2-636

[F] MJ-1024 (Console finisher)

(1) Turn OFF the power and unplug the power

cable.

(2) Take off the connector cover and disconnect

the connector.

(3) Open the finisher front cover and remove

1 screw.

(4) Remove 1 screw and take off the cover of the

finisher rear side.

Fig. 2-637

Fig. 2-638

Fig. 2-639

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 44 November 2003 © TOSHIBA TEC

Page 61

(5) Remove 1 screw.

(6) Take off the finisher.

Note:

Be careful not to fell the finisher when moving

the finisher unit only.

Fig. 2-640

[G] MJ-6004 (Hole punch unit)

(1) Turn OFF the power and unplug the power

cable.

(2) Take off the connector cover and disconnect

connector.

(3) Open the front cover of the hole punch unit

and remove 1 screw.

Fig. 2-641

Fig. 2-642

Fig. 2-643

November 2003 © TOSHIBA TEC 2 - 45 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 62

(4) Take off the cover of the punch unit lower side.

Fig. 2-644

(5) Remove 1 screw.

(6) Remove 3 screws and take off the punch unit

rear cover.

(7) Remove 1 screw.

Fig. 2-645

Fig. 2-646

Fig. 2-647

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 46 November 2003 © TOSHIBA TEC

Page 63

(8) Take off the finisher with the hole punch unit.

Note:

Be careful not to fell the finisher when moving

the finisher unit only.

(9) Disconnect 2 connectors.

Fig. 2-648

(10) Remove 2 screws.

(11) Lift up the punch unit and take it off.

Fig. 2-649

Fig. 2-650

Fig. 2-651

November 2003 © TOSHIBA TEC 2 - 47 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 64

[H] KN-3520 (Bridge unit)

(1) Turn OFF the power and unplug the power

cable.

(2) Remove 2 screws and take off the cover.

Fig. 2-652

(3) Disconnect 1 connector.

(4) Open the bridge unit. Remove 1 screw and

take off the cover.

(5) Close the bridge unit and remove 1 screw.

Fig. 2-653

Fig. 2-654

Fig. 2-655

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 48 November 2003 © TOSHIBA TEC

Page 65

(6) Remove 4 screws and take off the bracket.

(7) Lift up the bridge unit and release the hook.

Take off the bridge unit toward the front.

Fig. 2-656

[I] MJ-5004 (Job separator)

(1) Turn OFF the power and unplug the power

cable.

(2) Take off the tray.

(3) Remove 2 screws and take off the cover.

Fig. 2-657

Fig. 2-658

Fig. 2-659

November 2003 © TOSHIBA TEC 2 - 49 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 66

(4) Disconnect 2 connectors.

Fig. 2-660

(5) Loosen 2 screws and take off the cover.

(6) Remove 1 screw.

(7) Lift up the job separator and release the hook.

Take off the job separator toward the front.

Fig. 2-661

Fig. 2-662

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 50 November 2003 © TOSHIBA TEC

Page 67

[J] MJ-5005 (Offset tray)

(1) Turn OFF the power and unplug the power

cable.

(2) Take off the tray.

(3) Remove 2 screws and take off the cover.

Fig. 2-663

(4) Disconnect 2 connectors.

(5) Remove 1 screw and take off the cover.

Fig. 2-664

Fig. 2-665

Fig. 2-666

November 2003 © TOSHIBA TEC 2 - 51 e-STUDIO350/450 OUTLINE OF THE MACHINE

Page 68

(6) Remove 1 screw.

(7) Lift up the offset tray and release the hook.

Take off the offset tray toward the front.

Fig. 2-667

e-STUDIO350/450 OUTLINE OF THE MACHINE 2 - 52 November 2003 © TOSHIBA TEC

Page 69

3. COPY PROCESS

3.1 General Description of Copying Process

Original exposure

(2)

Xenon lamp

16W

Discharging

Data reading(scanning)

(3)

CCD

600 dpi,7400 pixel

Image processing

(1)

(4)

Semiconductive laser

(11)

Charging

–790V

(grid voltage)

Data writing

Pw=4.3 nJ/mm

(5)

Discharge LED (red)

Wavelength 660nm x14pcs

Development

Magnetic roller

Bias –550VDC

+150VDC

Fig.3-101

(10)

Cleaning

Blade method

Toner

Carrier

Paper exit

(9)

Fusing

Induction heating (IH) method

700~1240W

(8)

ACH 5.5kV

(7)

Transfer

H 286 uA C 286 uA L 137 uA

(6)

Bypass feeding

(100 sheets)

Drawer feeding

(upper/lower)

(550 sheets)

PFP (upper/lower)

(550 sheets) or

LCF

(1250 sheets x 2)

Separation

C 4.0kV

L 2.5kV

DC -100V

1kHz

Transfer bias

DC+580V

(1) Charging: Applies negative charge on the surface

of the photoconductive drum.

(2) Original exposure: Converts images on the

original into optical signals.

(3) Data reading: The optical signals are converted

into electrical signals.

(4) Data writing: The electrical signals are converted

into light signal (laser emission) which exposes the

surface of the photoconductive drum.

(5) Development: Negatively-charged toner adheres

to the photoconductive drum and forms visible

image.

(6) Transfer bias: Improves transfer efficiency.

(7) Transfer: Transfers the visible toner image on

the photoconductive drum onto paper.

(8) Separation: Separates paper with the toner

image from the photoconductive drum.

(9) Fusing: Fuses the toner image onto the pa-

per by applying heat and pressure.

(10) Cleaning : Scrapes off the residual toner from

the drum.

(11) Discharging : Eliminates the residual nega-

tive charge from the surface of the

photoconductive drum.

November 2003 © TOSHIBA TEC 3 - 1 e-STUDIO350/450 COPY PROCESS

Page 70

3.2 Details of Copying Process

(1) Photoconductive drum

The photoconductive drum consists of two lay-

ers. The outer layer is a photoconductive layer

made of an organic photoconductive carrier

(OPC), and the inner layer is an aluminum

conductive base in a cylindrical form.

Structure of the photoconductive drum

(Example of OPC)

The photoconductor has the following prop-

erty: when it is exposed to light, the electrical

resistance it possesses increases or de-

creases according to the strength of the light.

Example:

· Strong lightn

Resistance is decreased (works as a conductor.)

– 500

· Weak lightn

Surface potential (V)

Resistance is increased (works as an insulator.)

Photoconductive layer

Base

Fig.3-201

Time (t)

Black area of original

[Formation of electrostatic latent image]

In the processes of charging, data reading,

data writing, discharging described later, nega-

tive potential of the areas on the drum corre-

sponding to black areas of the original are

eliminated, while the areas on the drum corre-

sponding to white areas retains the negative

charge.

As this image on the drum formed by the nega-

tive potential is not visible, it is called an “elec-

trostatic latent image.”

(2) Charging

Charging is the process to apply charge

evenly on the drum surface.

The charger wire produces negative corona

discharge is controlled by the grid, allowing

White area of original

Discharge

Charging

process

– 1000

Electric potential of the photoconductive drum

process

Fig.3-202

Main charger

Drum rotation

the drum surface to be evenly charged with

the negative potential.

The surface potential on the drum is deter-

mined by the grid potential and is controlled to

transformer

Grid control circuitHigh-voltage

Fig.3-203

a certain value by the grid control circuit.

e-STUDIO350/450 COPY PROCESS 3 - 2 November 2003 © TOSHIBA TEC

Page 71

(3) Data reading (scanning)

Data reading is the 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 into

electrical signals (image signals), which are

then transmitted to the image processing sec-

tion.

CCD

Image processing

section

Fig.3-204

(Example)

(4) Data writing

Data writing is the process of converting the

image signals sent from the image process-

ing section into optical signal and exposing the

drum surface with the light.

Semiconductive laser element converts image

signals transmitted from the image process-

ing section into optical signal (laser emission)

to expose the drum surface and form an elec-

trostatic latent image on it.

CCD light receiving amount

Light 255

Dark 0

Fig.3-205

Image processing section

Polygonal mirror

Photo-

conductive

drum

Value of image signals to be output

Difference between "light " and "dark" is divided into 256 steps.

LDR board

Semiconductive laser element

Fig.3-206

Page 72

(5) Development

Development is the process of making the

electrostatic latent images visible to the eye

(visible images).

Drum

Developer material is supplied to the photo-

conductive drum surface by the magnetic roller.

The toner in the developer material adheres

to the areas on the drum surface where the

potential is lower than the developer bias which

Magnetic roller

is applied to the magnetic roller (reverse de-

velopment method).

Magnet

Magnetic roller

Bias voltage –550 VDC

Photoconductive drum

Toner

Carrier (always attracted onto the magnet)

Toner

Photoconductive layer

Aluminum base

White background

Fig.3-207

Halftone

Solid

Fig.3-208

The (–) potential of the photoconductive drum is higher than the developer bias.

White background

– 600V

750V

– 400V

550V

Image not developed

Image developed by

Bias potential

toner

– 300V

The (–) potential of the photoconductive drum is lower than

– 200V

the developer bias.

– 100V

Fig.3-209

Page 73

• Switching of developer bias polarity

With the area which has no negative charge,

background fogging is decreased by switching the

bias to the positive polarity (approx. +150 V).

• Developer material

The developer material consists of a mixture of

the toner and carrier. The toner is charged to

the negative polarity and the carrier to positive

polarity due to the friction with each other

Resin (90-95%)

[Toner]

Carbon (5-10%)

5-20 µm

Ferrite

caused by mixing.

Tone : Mainly consists of the resin and carbon.

Carrier : Consists of the ferrite and resin coating

on its surface to provide consistent fric-

tional electrification.

Note:

If the developer material is used for a long time (be-

yond its normal life span),

the toner is caked onto the carrier.

The charging performance of the carrier is lowered.

Symptom : 1.Image density is lowered.

2.Toner scattering occurs.

3.Background fogging occurs.

Solution : Replace the developer material.

[Carrier]

Fig.3-210

Toner

No frictional electrification occurs on the area where the toner is caked.

Fig.3-211

Carrier

30-100 µm

• Magnetic roller

- Magnetic brush development -

The south and north poles are arranged inside

Photoconductive drum

the magnetic roller as shown in the right figure.

The developer material forms a brush-like fluff

which contacts the photoconductive drum sur-

face.

Magnetic roller

Magnetic force line

This is caused by the magnetic force lines be-

tween the south and north poles.

Fig.3-212

Page 74

Additional Explanation

The life of the toner cartridge (number of output pages) varies depending on the following conditions.

1. Coverage of originals (printing image ratio of the original size) and density of original background

2. Size and density of originals

3. The existence of solid black when making prints (when a book is copied and the original cover is

partially opened)

4. Temperature and humidity in the room when making prints.

5. Prints density and image quality mode

As indicated in the figure below, the life of the toner cartridge varies depending on the copy mode

and coverage of originals.

6. A full block in the figure below denotes approx. 10,000 output pages.

Type of originals

A A ABC

Block

Fig.3-213

Page 75

(6) Transfer

Transfer is the process of transferring the toner

image (visible image) formed on the drum sur-

face onto paper. Method : A paper passing the side of the

drum is charged to the opposite polarity to the that of toner by the corona discharge of the transfer charger.

The toner moves from the drum

surface onto the paper.

*For smooth transfer

In the transfer bias processing of this equipment,

bias voltage (+580 VDC) is applied to the

pretransfer guide to prevent the charge pro-

duced by the transfer charger from flowing into

the pre-transfer guide through the paper.

The corona discharge applied to the paper is

normally 286 µA DC. However, to improve trans-

ferability at the trailing edge of the paper, lower

output (137 µA DC) is applied to the part

10 mm from the trailing edge.

Drum

Drum rotation

Fig.3-214

Toner

Paper

Transfer charger

Direction of transportation

Transfer charger

(7) Separation

Separation is the process of separating paper

which is temporaily adhering to the drum due

to the static electricity during the transfer pro-

cess. Method : Apply AC voltage to which the nega

tive DC bias is added to the separa tion charger.

The positive charge on the paper

is decreased.

The static electricity (adherence power) between the paper and

drum becomes weak.

The paper is separated from the drum by its own stiffness and ab sorption by the fan.

Fig.3-215

Suction fan (Sub-separation fan)

쩪

Absorbing

Drum rotation

Separation charger

Direction of transportation

Fig.3-216

Page 76

* Output is controlled as follows to realizes the desirable separability and transferability.

Paper position against transfer point

From leading edge to 10 mm from leading edge

From 10 mm from leading edge to 17 mm from trailing edge

From 17 mm from trailing edge to trailing edge

Separation output

(H) 5.5kV AC/–100 V DC

(L) 2.5kV AC/–100 V DC

Separation finger

Paper may not be separated from the drum sur-

face because of moisture or malfunction of the

Paper movement

transfer/separation charger during printing. As

the result, the paper enters into the cleaner and

causes jamming. To prevent this, a separation

Drum rotation

Separation charger

finger is used to forcibly separate the paper

which was left around the drum.

Fig.3-217

(8) Fusing

Fusing is the process of melting the toner on

the paper and fixing it firmly on the paper.

Method : The melting point of the toner (main

ingredient : resin) is 100-110°C.

(Heat) Toner is melted by the heat of the

surface of the fuser roller.

(Pressure) The pressure roller is pressed

against the fuser roller by the

springs to increase the adherence

of the melted toner onto the paper.

Heat and pressure are applied to

the paper when it passes between

the fuser roller and pressure roller.

(Fusing) The toner is fused on the paper.

Fuser roller

Separation finger

Fuser roller

IH coil

Paper movement

Pressure

Paper

Fig.3-218

Separation finger

(Pressure)

Pressure roller

Fig.3-219

Page 77

(9) Cleaning

Cleaning is the process of removing the re-

sidual toner from the photoconductive drum.

The edge of the urethane rubber cleaning

blade is pressed against the photoconductive

drum surface to scrape off the residual toner

on it. The toner is then caught by the recovery

blade.

(10) Discharging

Discharging is the process of eliminating the

negative charge remaining on the photocon-

ductive drum before the next charging process.

If the residual charge is not eliminated, the fol-

lowing phenomenon occurs:

Uneven charge is applied to the drum during

the next printing.

Recovery blade

Cleaning blade

Drum rotation

Fig.3-220

Discharge LED

Photoconductive drum

The next print will have a double image. (The

preceding image appears.)

Solution :

The entire surface of the photoconductive drum

is illuminated with light by the discharge LED

array.

The photoconductive drum becomes electri-

cally conductive.

All of the negative charge remaining on the

photoconductive drum is conducted to the

ground.

Preparation for the next printing is completed.

Ground

Fig.3-221

Page 78

3.3 Comparison with DP4500/3500

Process

1. Photoconductive drum

(1) Sensitivity

(2) Surface potential

2. Charging

(1) Grid voltage

OD-3500 (OPCø60)

Highly sensitized/durable drum

-750 V

Scorotron method

-790 V

DP4500/3500

←

e-STUDIO350/450

3. Data writing

(1) Light source

Semiconductor laser (Adjustment not

←

required)

(2) Light amount

4.0 nJ/mm

4.3 nJ/mm

4. Development

(1) Magnetic roller

(2) Auto-toner

(3) Toner supply

(4) Toner-empty detection

(5) Toner

One magnetic roller

Magnetic bridge-circuit method

Toner cartridge

Density detection method

T-3500, T-3500E, T-3500D

←

T-3520, T-3520E, T-3520D, T-3520C,

T-3520T

(6) Developer material

(7) Developer bias

D-3500

DC-550 V Adjustable output (during

D-3500, D-3500C

←

printing)

5. Transfer

(1) Transfer bias

6. Separation

DC+150 V Fixed (others)

Adjustable output (Constant current)

+580 V (Adjustment not required)

AC:

Adjustable output (Constant voltage)

DC: Adjustment not required

←

7. Discharge

(1) Discharging position

(2) Discharge LED

Exposure after cleaning

Red LED

←

8. Cleaning

(1) Method

(2) Recovered toner

Cleaning blade

Not reusable

←

9. Fusing

(1) Method

(2) Cleaning

(3) Heater

Long-life fuser roller method

Fuser roller:

Coated with fluoroplastic (ø40)

Pressure roller:

PFA tube roller (ø30)

Cleaning roller for pressure roller

(ø14)

IH coil (Induction-heating method)

←

Thin roller coated with fluoroplastic(ø40)

←

Turned ON/OFF by thermistor

Page 79

4 GENERAL OPERATION

4.1 Overview of Operation

Operation of equipment Operation during initializing, pre-running and ready

Drawer feed copying by [START] button

Copying operation Bypass feed copying

Interrupt copying

4.2 Description of Operation

4.2.1 Warming-up

(1) Initialization

• Power ON

• IH coil ON

• Set number “1” reproduction ratio “100%” and “WAIT WARMING UP” are displayed

• Fan motors ON

• Initialization of scanning system

– The carriage moves to the home position.

– The carriage moves to the peak detection position.

– The exposure lamp is turned ON.

– Peak detection (white color is detected by the shading correction plate)

– The exposure lamp is turned OFF.

• “READY (WARMING UP)” is displayed

(2) Pre-running operation

The pre-running operation is started when the temperature of the fuser roller surface reaches a

certain temperature.

• Fuser roller rotated

• Drum rotated

– The main motor is turned ON.

• Initialization of feeding system

– Each drawer tray goes up.

• Pre-running operation stops after five seconds.

(3) When the surface temperature of the fuser roller becomes sufficient for fusing,

• “READY” is displayed.

Page 80

4.2.2 Ready state (ready for copying)

• Buttons on the control panel enabled

• When no button is pressed for a certain period of time,

– Set number “1” and reproduction ratio “100%” are displayed. Equipment returns to the normal

ready state.

4.2.3 Drawer feed copying (Upper drawer paper feeding)

(1) Press the [START] button

• “READY” changes to “COPYING”

• Exposure lamp ON

• Scan motor ON → carriages -1 and -2 move forward

• Polygonal motor rotates in high speed

• Main motor and exit motor ON

– The drum, fuser unit, developer unit and exit roller are driven.

(2) Drawer paper feeding

• Main charger, developer bias and discharge LED ON

• Fans are rotated in high speed

• Drawer feed clutch ON

– The pickup roller, feed roller, separation roller and transport roller start to rotate.

• Paper reaches the upper drawer feed sensor

– The upper drawer feed sensor is turned ON.

• Paper reaches the registration roller.

– The registration sensor is turned ON and aligning is performed.

• Drawer feed clutch OFF after a certain period of time

(3) After the carriage operation:

• Registration clutch ON after a certain period of time → paper is transported to the transfer area.

• Copy counter operates

(4) After the registration clutch is turned ON:

• Transfer charger ON after a certain period of time

(5) Completion of scanning

• Scan motor OFF

• Exposure lamp OFF

• Registration clutch OFF (after the trailing edge of the paper passed the registration roller)

• “READY (PRINTING)” is displayed

Page 81

(6) Paper exit

• Exit sensor detects the trailing edge of the paper

• Main charger, developer bias and discharge LED OFF

• Polygonal motor, main motor and exit motor OFF

• Drum, fuser unit and developer unit stop

• Fans return to the ready rotation

• “READY” is displayed and the equipment enters the ready mode

Page 82

5000

246

366

1306 2316

1284

3908

0 228 1398 2394

2278 3378

4156 4296

4296

2280

2246

2066

402

154

458 1658 1714

154

4156

1710

2296

1000 1500 2000 2500 3000 3500 4000 4500 5000

Timing chart for copying one A4 size sheet fed from the upper drawer

(ms)

fwd.

rev.

–

Scanner motor

Exposure lamp

Main motor

Upper drawer feed

clutch

Upper drawer feed

sensor

Registration sensor

Registration clutch

MVDEN signal

Main charger

Developer bias

Discharge LED

Exit sensor

Page 83

4.2.4 Bypass feed copying

(1) Insert a sheet of paper into the bypass tray.

• Bypass paper sensor ON

– “Ready for bypass feeding” is displayed.

• Carriages move to the home position

(2) Press the [START] button

• “Ready for bypass feeding” changes to “COPYING”

• Exposure lamp ON

• Scan motor ON → Carriages -1 and -2 move forward

• Polygonal motor rotates in high speed

• Main motor and exit motor ON

– The drum, fuser unit, developer unit and exit roller are driven.

(3) Bypass feeding

• Main charger, developer bias and discharge LED ON

• Fans are rotated in high speed

• Bypass feed clutch ON

– The bypass pickup roller and bypass feed roller start to rotate.

– The bypass pickup roller is lowered.

• Aligning operation

• Paper reaches the registration roller

• After a certain period of time, the bypass feed clutch OFF

(4) Hereafter, the operation (3) through (6) of “4.2.3. Drawer feed copying” is repeated.

4.2.5 Interruption copying

(1) Press the [INTERRUPT] button

• LED “INTERRUPT” ON

• Copying operation in progress is temporarily stopped

• Carriages -1 and -2 return to appropriate positions

• “Job interrupted job 1saved” is displayed.

• Automatic density and reproduction ratio 100% are set (The set number remains the same)

(2) Select the desired copy condition

Page 84

(3) After the interruption copying is finished:

• LED “INTERRUPT” OFF by pressing the [INTERRUPT] button

• Equipment returns to the status before the interruption

• “Ready to resume job 1” is displayed

(4) Press the [START] button

The copying operation before the interruption is resumed.

4.3 Detection of Abnormality

When something abnormal has occurred in the equipment, the symbols corresponding to the type of

abnormality are displayed.

4.3.1 Types of abnormality

A) Abnormality cleared without turning OFF the door switch

(1) Add paper

(2) Paper misfeed in bypass

B) Abnormality not cleared without turning OFF the door switch

(1) Misfeed in equipment

(2) Add toner

(3) Developer unit not installed properly

(4) Toner bag replacement

C) Abnormality not cleared without turning OFF the main switch

(1) Call for service

Page 85

4.3.2 Description of abnormality

A-1) Add paper

Drawer empty sensor detects the presence or absence of paper.

[When drawer is not installed]

No drawer detected

↓

Tray not going up (drawer empty sensor OFF)

↓

“Add paper” displayed

↓

[START] button disabled

[When drawer is installed]

Drawer detected

↓

Tray going up (drawer empty sensor OFF)

↓

“Add paper” displayed

↓

[START] button disabled

Page 86

• When the power is turned ON or the LCF drawer is inserted (when the power is turned ON or

equipment drawer / 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 the

tray is in abnormal condition.

→ “Add paper” is displayed regardless of presence/absence of paper.

↑ ↓

Cleared by turning the power ON / OFF

Tray-up sensor is turned ON in a fixed period of time.

→

– The tray motor stops.

At this time, if the empty sensor is ON: It is judged that there is paper.

OFF: It is judged that there is no paper.

↓

Drawer area of the illustration blinks (When the drawer is selected)

• When the paper in the drawer runs out during copying,

→ The tray-up sensor turned OFF → The tray-up motor turned ON → Tray goes up

The tray-up sensor turned ON → Tray-up motor stopped.

• Empty sensor turned OFF during the copying in spite of the tray-up sensor is ON

It is judged that there is no paper.

↓

Drawer area of the illustration blinks (When the drawer is selected)

↓

The copying operation is stopped.

Page 87

A-2) Bypass misfeeding ( )

• During bypass feeding

Bypass feed clutch ON

↓

Registration sensor ON

* Registration sensor is not turned ON in a fixed period of time (E120)

↓

Bypass misfeeding (E120)

↓

Bypass misfeeding symbol is displayed ( )

↓

Copying operation is disabled

↓

Solution: The bypass paper sensor is turned OFF by removing the paper from the bypass tray.

A-3) Set key copy counter

• When the key copy counter (optional) is pulled out from the equipment which installs it:

“Set key copy counter” displayed

↓

Copying operation disabled

→

    

• When the counter is pulled out during copying:



Copying is stopped when the key copy counter is pulled out.

B-1) Misfeed in equipment ( )

• Exit sensor detects jamming of the leading edge of paper.

↓

Registration clutch ON

Registration clutch

↓ Less than 1.056 sec.

Exit sensor ON

If the exit sensor is not turned ON after

1.056 seconds,

↓

Paper jam (E010) → The copying operation is stopped.

Exit sensor

Timer

Paper jam (E010)

Fig. 4-301

1.056sec.

Page 88

• Exit sensor detects jamming of the tailing edge of paper.

↓

Registration clutch OFF

Registration clutch

OFF

↓ Less than 1.116 sec.

Exit sensor OFF

If the exit sensor is not turned OFF after

1.116 seconds,

↓

Paper jam (E020) → The copying operation is stopped.

• Immediately after the power ON

Exit sensor

Timer

Paper jam (E020)

Fig. 4-302

1.116sec.

↓

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 detects jamming of the leading edge of paper:

↓

Registration sensor is not turned ON in a fixed period of time after the leading edge of paper

passed the transport roller.

↓

Paper jam (E120, E200, E210, E300, E330 and E3C0)

• During paper feeding from ADU:

Registration sensor is not turned ON in a fixed period of time after the ADU clutch is turned

ON.

↓

Paper jam (E110)

• During paper transporting from ADU:

ADU entrance/exit sensors do not detect the paper at the fixed timing

↓

Paper jam (E510 or E520)

Page 89

• During paper feeding from the equipment or PFP:

Registration sensor is not turned ON in a fixed period of time after the feed clutch is turned

↓

Paper jam (E220, E310, E320, E340– E360, E3D0 and E3E0: Error code differs depending on

the paper source.)

B-2) Add toner ( )

Toner density becomes low

↓

Auto-toner sensor detects the absence of the toner

↓

Control circuit → “Add toner” displayed: the copying operation disabled

Solution: Open the front cover and replace the toner cartridge with a new one.

Toner is supplied → copying operation enabled.

B-3) Developer unit not installed properly

Disconnection of the connectors of the developer unit

↓

“Developer unit not installed” is displayed.

Solution: Connect the connectors of the developer unit and close the front cover.

B-4) Dispose of used toner ( )

• Toner bag becomes full of toner

↓

Toner recovery auger shifts to the rear side: Toner bag full detection sensor (1) ON or Toner bag

detection sensor (2) ON

↓

“Dispose of used toner” is displayed.

• Toner bag full detection sensor ON during printing

↓

Printing is stopped after the paper being printed is exited.

Solution: Replace the toner bag with a new one and close the front cover.

C-1) Call for service

Error code is displayed instead of the set number by pressing the [CLEAR] button and [8] button

simultaneously when the “Call for service” is blinking.

Refer to the error code table in the Service Handbook.

Page 90

4.4 Flow Chart

4.4.1 Immediately after the power is turned ON

Main switch ON

Restart

YES

DC power ON

Cover is open?

IH coil ON

Registration sensor

ON?

Exit sensor

ON?

Scan motor ON

Home position

detected?

YES

2.5 seconds elapsed?

YES

entrance/exit sensors

YES

Paper jam

ADU

ON?

Call for service

Upper drawer feed

sensor ON?

Lower drawer feed

sensor ON?

A B

“C260”

Peak detected?

YES

Call for service

“C270” “C280”

Page 91

Temperature of the

fuser roller ready

for pre-running?

YES

Main motor ON Tray-up motor ON

Fuser roller

reached ready

temp.?

YES

Main motor OFF

READY

Thermistor

broken?

Call for service

“C410” “C430”

YES

IH coil broken?

NO NO

YES

Call for service

“C440” “CA10”

Polygonal

motor in abnormal

condition?

YES

IH error

YES

Call for service

“C470” “C480” “C490”

Page 92

4.4.2 Automatic paper feed copying

Press [START] button

Developer bias ON Main charger ON

Processing system control

Polygonal motor

Discharge LED ON

Transport system control

Main motor ON Exit motor ON Polygonal motor ON

Scanning system control

normal rotation?

YES

Call for service

“CA10”

Laser ON

Transfer charger ON

Feed clutch ON

Feed clutch OFF

Registration clutch ON

Exposure lamp ON

Carriages move forward

Carriages stopped

Counter ON/OFF

Transfer charger OFF

Call for service

“CA20”

Remaining set

Laser OFF

Processing system

control completed

H-Sync

OK?

YES

number=0?

YES

Registration clutch OFF

Remaining set

number=0?

YES

Exit sensor

detected leading

edge of paper?

Exposure lamp OFF

Carriages move

backward

Carriages stopped

Scanning system control completed

Paper jam

“E010”

Page 93

Paper jam

“E020”

Exit sensor

detected trailing

edge of paper?

Polygonal motor OFF Main charger OFF Discharge LED OFF Developer bias OFF Exit motor OFF

Drum rotation reversed

Main motor OFF

READY

Page 94

Page 95

5. CONTROL PANEL

5.1 Control Panel and Display Panel

The control panel consists of button switches and touch-panel switches to operate equipment and select

various 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 appear with messages explaining the condition

of the equipment in the LCD panel.

This equipment has a movable control panel which enables to adjust its angle to the operator. It also has

improved its operatability and visibility with the enlarged LCD panel.

[Control Panel Outside View]

Fig. 5-101

Page 96

5.2 Items Shown on the Display Panel

Fig. 5-201

Fig. 5-202

Page 97

5.2.1 Display

No. Message State of equipment Note

Saving energy -

press START button Wait Warming Up

Wait Warming Up

Auto Start WAIT

Wait adding toner

Performing Auto

Calibration READY

READY

Press START button to copy READY

(WARMING UP) READY

(PRINTING) READY

(ADDING TONER) READY

(INNER TRAY FULL)

READY

(CHECK STAPLER) READY

(CHECK SADDLE STITCH STAPLER) READY

(ADD PAPER) Press JOB STATUS button READY

(FINISHER FULL) READY

(HOLE PUNCH DUST BIN IS FULL)

Power is OFF (at Sleep Mode)

At Energy Saving Mode

Scanner warming up

- Displayed until the equipment becomes ready to start scanning

Scanner warming up

- Displayed when Auto Start is set

Displayed when performing the controlling function to keep the equipment at the best condition Supplying toner

- Equipment becomes the toner supply state

Displayed at image quality control

Ready for copying

- Waiting for the operation

Copying job interrupted

Scanner warming up

- Ready to scan the original

Printing out the data

- Scanning is enabled

Supplying toner

- Scanning is enabled

Receiving tray in the equipment is full

- Scanning is enabled

No staples in finisher

- Scanning is enabled

Stapling jam occurred in finisher

No staples in saddle stitcher

- Scanning is enabled

No paper in drawer

- Scanning is enabled

Finisher is full of paper

- Scanning is enabled

Punching dust box is full

- Scanning is enabled

Press [START] button or [FUNCTION] button to clear Press [START] button to clear

Auto Start can be set

Press [STOP] button to clear the Auto Start.

Recovers when the toner supply has finished Recovers when the image quality control has finished

Press [START] button to resume copying or press [MEMORY CLEAR] button to delete the job

- When the bridge unit is installed

- Resumes printing by removing papers from the tray

Cleared by supplying the staples

Cleared by supplying staples

Cleared by supplying papers

Resumes printing by removing paper from the finisher Resumes printing by removing punching dust from the dust box

Page 98

No. Message State of equipment Note

READY (SADDLE STITCH TRAY FULL)

READY (CHANGE DRAWER TO CORRECT PAPER SIZE) Ready for bypass

feeding

COPYING

Auto Start

Close Large Capacity Feeder

Close Large Capacity Feeder Door

Place Doc. Feeder in the down position Insert key copy

counter

Place originals in the document feeder

Change direction of original

Place last %d originals in doc. feeder entrance tray

Add paper

Cannot duplex this size

Cannot use this media type

Copy size: A4/LT only

Copy size: A4/LT and A4-R/LT-R

CHANGE DRAWER TO CORRECT PAPER SIZE

Change drawer to correct media type Select a paper size

for bypass feeding

Saddle stitcher tray is full of paper

- Scanning is enabled

Incorrect paper size setting

Paper is set on the bypass tray

At the copying state

Auto Start is set during printing

LCF drawer is not installed when feeding from LCF is set LCF cover is open when feeding from LCF is set RADF is open when original is placed on RADF Key copy counter not inserted

Displayed when the conditions are set and START button is pressed with no original placed Displayed when the direction of original placed is different from the setting Paper jam occurred during copying (RADF scanning)

Displayed when the paper in selected drawer is running out Displayed when the paper size which is not specified for duplex copying is set Displayed when the paper size which is not specified for the functions such as stapling or hole punching is set Displayed when the paper size which is not specified for “Book-type duplex copying” or “Dual-page” is set Displayed when the paper size which is not specified for “Rotate Sort” Displayed when the selected paper size is not in the drawer

Displayed when the selected media type is not in the drawer Displayed when paper size needs to be specified for bypass feeding such as duplex copying

Cleared by pressing [RESET] button or [STOP] button Cleared by installing LCF drawer

Cleared by closing the cover

Cleared by closing RADF

Cleared by inserting key copy counter Cleared by setting the original

Page 99

No. Message State of equipment Note

Place the blank sheets in bypass tray and select the paper size Place the blank

sheets in the same direction as the originals Place the same size

blank sheets as the originals Place insertion

sheets in the bypass tray and select the paper size Select the same size

insert1 sheets as the originals Select the same size

insert2 sheets as the originals Set insert1 sheets in

the same direction as the originals Set insert2 sheets in

the same direction as the originals Set transparency film

in A4/LT direction CHECK PAPER IN

LARGE CAPACITY FEEDER CANNOT PUNCH

THIS SIZE PAPER Remove paper from

the finisher Cannot staple this

size Remove paper from

the saddle stitch unit Examine stapler

Displayed when no paper is in the selected feeder at Cover Copying Mode

Displayed when the direction of cover page is different from that of other pages at Cover Copying Mode

Displayed when the paper size of cover page is different from that of other pages at Cover Copying Mode Displayed when no insertion sheet is in the selected drawer at Sheet Insertion Mode

Displayed when the size of insertion sheet (sheet 1) is different from that of other pages at Sheet Insertion Mode Displayed when the size of insertion sheet (sheet 2) is different from that of other pages at Sheet Insertion Mode Displayed when the direction of insertion sheet (sheet 1) is different from that of other pages at Sheet Insertion Mode Displayed when the direction of insertion sheet (sheet 2) is different from that of other pages at Sheet Insertion Mode Displayed when the selected paper size is other than A4/LT at OHP mode Papers in LCF are set incorrectly

Displayed when the selected paper size is not specified for hole punching Displayed when the paper sizes are mixed at Staple Sorting Mode Displayed when the paper size is not specified for stapling at Staple Sorting Mode Finisher is full of papers

Trouble in the stapler unit in finisher

Check staple

cartridge Check staple cartridge

in the saddle stitch unit Job interrupted job 1

saved Ready to resume job

No stapler in finisher section

No stapler in saddle stitch unit

Interrupt copying is accepted

Interrupt copying is cancelled (finished)

Page 100

No. Message State of equipment Note

Cannot use AMS mode More than 200% is

not available

Updated the template setting

Enter Department Code Cannot copy Check

DEPARTMENT COUNTER Not enough memory

to store original(s) Will you print out stored originals?

Not enough memory to store original(s) Will you send stored originals in?

Not enough memory to store original(s) Will you save stored originals in? The number of

originals exceeds the limits Will you copy stored originals?

The number of originals exceeds the limits. Will you send stored originals? The number of

originals exceeds the limits. Will you save stored originals?

Install new toner cartridge

Time for periodic maintenance

READY (CHANGE DRAWER TO CORRECT MEDIA TYPE)

PRESS [BASIC] and select normal paper size

Displayed when reproduction ratio is set to be over 200% at AMS Mode on RADF Displayed when reproduction ratio is set manually to be over 200% on RADF Displayed when the template stored is recalled by pressing [TEMPLATE] button Displayed when a button is pressed while the department management setting is available Displayed when the number of printouts exceeds the limit number of department counter Displayed when confirming the user to print out the data as much as stored at memory

- full state

Displayed when confirming the user to send the FAX data as much as stored at memory

- full state

Displayed when confirming the user to save the scanning data as much as stored at memory-full state

Displayed when confirming the user to print out the data as much as stored at memoryfull state

Displayed when confirming the user to send the FAX data as much as stored at memoryfull state

Displayed when confirming the user to save the scanning data as much as stored at memory-full state

No toner in the cartridge

PM cycle

- Displayed at the time for maintenance

- Copying is available Displays when the printing is stopped because of media type mismatch

Dsiplays the warning that the copy is not enabled when any drawer but bypass feed is selected at Cover Sheet Mode or Sheet Insertion Mode.

Set the reproduction ratio 200% or below manually Set the reproduction ratio 200% or below

Displayed only in FAX Function

Displayed only in Scanning Function

Displayed when toner is running out. Copying not enabled Maintenance and inspection are performed by qualified service technician.

TOSHIBA e-STUDIO350, e-STUDIO450 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

1. SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES

1.1 Specifications

1.2 Accessories

1.3 Options

1.4 Supplies

1.5 System List

2. OUTLINE OF THE MACHINE

2.1 Sectional View

2.2 Electric Parts Layout

2.3 Symbols and Functions of Various Components

2.4 General Description

2.4.1 System block diagram

2.4.2 Construction of boards

2.5 Installation and Replacement of Covers and PC boards

2.5.1 External covers

2.5.2 PC boards

2.6 Options

3. COPY PROCESS

3.1 General Description of Copying Process

3.2 Details of Copying Process

3.3 Comparison with DP4500/3500

4 GENERAL OPERATION

4.1 Overview of Operation

4.2 Description of Operation

4.2.1 Warming-up

4.2.2 Ready state (ready for copying)

4.2.3 Drawer feed copying (Upper drawer paper feeding)

4.2.4 Bypass feed copying

4.2.5 Interruption copying

4.3 Detection of Abnormality

4.3.1 Types of abnormality

4.3.2 Description of abnormality

4.4 Flow Chart

4.4.1 Immediately after the power is turned ON

4.4.2 Automatic paper feed copying

5. CONTROL PANEL

5.1 Control Panel and Display Panel

5.2 Items Shown on the Display Panel

5.2.1 Display