Toshiba e-STUDIO 181, e-STUDIO 211 Service manual

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SERVICE MANUAL

MULTIFUNCTIONAL DIGITAL SYSTEMS

e-STUDIO181/211

Model: DP-1810/2110 Publish Date: December 2009 File No. SMJ09001300 R091021I2400-TTEC Ver00_2009-12

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Trademarks

• The official name of Windows 95 is Microsoft Windows 95 Operating System.

• The official name of Windows 98 is Microsoft Windows 98 Operating System.

• The official name of Windows Me is Microsoft Windows Millennium Edition Operating System.

• The official name of Windows 2000 is Microsoft Windows 2000 Operating System.

• The official name of Windows XP is Microsoft Windows XP Operating System.

• Microsoft, Windows, Windows NT, Windows Vista and the brand names and product names of other Microsoft products are trademarks or registered trademarks of Microsoft Corporation in the U.S. and/or other countries.

• Apple, AppleTalk, Macintosh, and Mac are trademarks of Apple Computer, Inc. in the U.S. and other countries.

• PostScript is a trademark of Adobe Systems Incorporated.

• NOVELL, NetWare, and NDS are trademarks or registered trademarks of Novell, Inc.

• Mylar is a registered trademark of DuPont Teijin Films U.S. Limited Partnership.

• Molykote is a registered trademark of Dow Corning Corporation.

• FLOIL is a registrated treadmark of Kanto Kasei Ltd. CORPORATION.

• TopAccess is a trademark of Toshiba Tec Corporation.

• Felica is a trademark of Sony Corporation.

• iCLASS is a trademark of HID Corporation.

• MIFARE is a trademark of Royal Philips Electronics.

• Other company names and product names in this manual are the trademarks of their respective companies.

Under the copyright laws, this manual cannot be reproduced in any form without prior written permission of TOSHIBA TEC CORPORATION. No patent liability is assumed, however, with respect to the use of the information contained herein.

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GENERAL PRECAUTIONS REGARDING THE SERVICE FOR e-STUDIO181/211

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

1) Transportation/Installation

- When transporting/installing the equipment, remove the drawer, employ two persons and be sure

to hold the positions as shown in the figure. The equipment is quite heavy and weighs approximately 34 kg (74.96 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 trans-

porting the equipment

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

V / 8 A for its power source.

- The equipment must be grounded for safety.

- Select a suitable place for installation. Avoid excessive heat, high humidity, dust, vibration and

direct sunlight.

- Provide proper ventilation since 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”) on the rear.

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

- Be sure to fix and plug in the power cable securely after the installation so that no one trips over

it.

- When the equipment is used after the option is removed, be sure to install the parts or the covers

which have been taken off so that the inside of the equipment is not exposed.

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2) General Precautions at Service

- Be sure to turn the power OFF and unplug the power cable during service (except for the service

should be done with the power turned ON).

- Unplug the power cable and clean the area around the prongs of the plug and socket outlet once

a year or more. A fire may occur when dust lies on this area.

- When the parts are disassembled, reassembly is the reverse of disassembly unless otherwise

noted in this manual or other related documents. Be careful not to install small parts such as screws, washers, pins, E-rings, star washers in the wrong places.

- Basically, the equipment should not be operated with any parts removed or disassembled.

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

since the ICs on it may be damaged due to static electricity.

Caution: Before using the wristband, unplug the power cable of the equipment and

make sure that there are no charged objects which are not insulated in the vicinity.

- Avoid expose to laser beam during service. This equipment uses a laser diode. Be sure not to

expose your eyes to the laser beam. Do not insert reflecting parts or tools such as a screwdriver on the laser beam path. Remove all reflecting metals such as watches, rings, etc. before starting service.

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

heater and areas around them.

- Be sure not to touch high-voltage sections such as the chargers, developer, high-voltage trans-

former 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.

- Make sure that the equipment will not operate before touching potentially dangerous places (e.g.

rotating/operating sections such as gears, belts pulleys, fans and laser beam exit of the laser optical unit).

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

underneath.

- When servicing the equipment with the power turned ON, be sure not to touch live sections and

rotating/operating sections. Avoid exposing your eyes to laser beam.

- Use designated jigs and tools.

- Use recommended measuring instruments or equivalents.

- Return the equipment to the original state and check the operation when the service is finished.

3) Important Service Parts for Safety

- The breaker, door switch, fuse, thermostat, thermofuse, thermistor, batteries, IC-RAMs including

lithium batteries, etc. are particularly important for safety. Be sure to handle/install them properly. If these parts are short-circuited and their functions become ineffective, they may result in fatal accidents such as burnout. Do not allow a short-circuit and/or do not use the parts not recommended by Toshiba TEC Corporation.

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4) Cautionary Labels

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

power cable during service”, “CAUTION. HOT”, “CAUTION. HIGH VOLTAGE”, “CAUTION. LASER BEAM”, etc. to see if there is any dirt on their surface and if they are properly stuck to the equipment.

Certification label (For UC)

Explanatory label

Identification label

For UC

For EU

For others

Warning for high-temperature areas (ventilation holes

Warning for high-temperature areas (fuser unit

)

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5) Disposal of the Equipment, Supplies, Packing Materials, Used Batteries and IC-RAMs

- Regarding the recovery and disposal of the equipment, supplies, packing materials, used batter-

ies and IC-RAMs including lithium batteries, follow the relevant local regulations or rules.

Caution:

Dispose of used batteries and IC-RAMs including lithium batteries according to this manual.

Attention:

Se débarrasser de batteries et IC-RAMs usés y compris les batteries en lithium selon ce manuel.

Vorsicht:

Entsorgung der gebrauchten Batterien und IC-RAMs (inclusive der Lithium-Batterie) nach diesem Handbuch.

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ALLEGEMEINE SICHERHEITSMASSNAHMEN IN BEZUG AUF DIE WARTUNG FÜR e-STUDIO181/211

Die Installation und die Wartung sind von einem qualifizierten ServiceTechniker durchzuführen.

1) Transport/Installation

- Zum Transportieren/Installieren des Gerätes werden 2 Personen benötigt. Die Kassette zuerst

herausnehmen und nur an den in der Abbildung gezeigten Stellen tragen. Das Gerät ist sehr schwer und wiegt etwa 34 kg; deshalb muss bei der Handhabung des Geräts besonders aufgepasst werden.

- Beim Transportieren des Geräts nicht an den beweglichen Teilen oder Einheiten halten.

- Eine spezielle Steckdose mit Stromversorgung von AC 110 V / 13.2 A, 115 V oder 127 V / 12 A,

220-240 V / 8 A als Stromquelle verwenden.

- Das Gerät ist aus Sicherheitsgründen zu erden.

- Einen geeigneten Standort für die Installation wählen. Standorte mit zuviel Hitze, hoher Luft-

feuchtigkeit, Staub, Vibrieren und direkter Sonneneinstrahlung sind zu vermeiden.

- Für ausreichende Belüftung sorgen, da das Gerät etwas Ozon abgibt.

- Um einen optimalen Kopierbetrieb zu gewährleisten, muss ein Abstand von mindestens 80 cm

links, 80 cm rechts und 10 cm dahinter eingehalten werden.

- Das Gerät ist in der Nähe der Steckdose zu installieren; diese muss leicht zu erreichen sein.

- Nach der Installation muss das Netzkabel richtig hineingesteckt und befestigt werden, damit nie-

mand darüber stolpern kann.

2) Allgemeine Sicherheitsmassnahmen in bezug auf die Wartung

- Während der Wartung das Gerät ausschalten und das Netzkabel herausziehen (ausser Wartung,

die bei einem eingeschalteten Gerät, durchgeführt werden muss).

- Das Netzkabel herausziehen und den Bereich um die Steckerpole und die Steckdose die Umge-

bung in der Nähe von den Steckerzacken und der Steckdose wenigstens einmal im Jahr reinigen. Wenn Staub sich in dieser Gegend ansammelt, kann dies ein Feuer verursachen.

- Wenn die Teile auseinandergenommen werden, wenn nicht anders in diesem Handbuch usw

erklärt, ist das Zusammenbauen in umgekehrter Reihenfolge durchzuführen. Aufpassen, dass kleine Teile wie Schrauben, Dichtungsringe, Bolzen, E-Ringe, Stern-Dichtungsringe, Kabelbäume nicht an den verkehrten Stellen eingebaut werden.

- Grundsätzlich darf das Gerät mit enfernten oder auseinandergenommenen Teilen nicht in

Betrieb genommen werden.

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- Das PC-Board muss in einer Anti-elektrostatischen Hülle gelagert werden. Nur Mit einer Man-

schette bei Betätigung eines Armbandes anfassen, sonst könnte es sein, dass die integrierten Schaltkreise durch statische Elektrizität beschädigt werden.

Vorsicht: Vor Benutzung der Manschette der Betätigung des Armbandes, das Netzkabel

des Gerätes herausziehen und prüfen, dass es in der Nähe keine geladenen Gegenstände, die nicht isoliert sind, gibt.

- Setzen Sie sich während der Wartungsarbeiten nicht dem Laserstrahl aus. Dieses Gerät ist mit

einer Laserdiode ausgestattet. Es ist unbedingt zu vermeiden, direkt in den Laserstrahl zu blicken. Keine reflektierenden Teile oder Werkzeuge, wie z. B. Schraubendreher, in den Pfad des Laserstrahls halten. Vor den Wartungsarbeiten sämtliche reflektierenden Metallgegenstände, wie Uhren, Ringe usw., entfernen.

- Auf keinen Fall Hochtemperaturbereiche, wie die Belichtungslampe, die Fixiereinheit, die

Heizquelle und die umliegenden Bereiche, berühren.

- Auf keinen Fall Hochspannungsbereiche, wie die Ladeeinheiten, die Entwicklereinheit, den

Hochspannungstransformator, und das Netzgerät, berühren. Insbesondere sollten die Platinen dieser Komponenten nicht berührt werden, da die Kondensatoren usw. auch nach dem Ausschalten des Geräts noch elektrisch geladen sein können.

- Vor dem Berühren potenziell gefährlicher Bereiche (z. B. drehbare oder betriebsrelevante Bere-

iche, wie Zahnräder, Riemen, Riemenscheiben, Lüfter und die Laseraustrittsöffnung der optischen Lasereinheit) sicherstellen, dass das Gerät sich nicht bedienen lässt.

- Beim Entfernen von Abdeckungen vorsichtig vorgehen, da sich darunter scharfkantige Kompo-

nenten befinden können.

- Bei Wartungsarbeiten am eingeschalteten Gerät dürfen keine unter Strom stehenden, drehbaren

oder betriebsrelevanten Bereiche berührt werden. Nicht direkt in den Laserstrahl blicken.

- Ausschließlich vorgesehene Werkzeuge und Hilfsmittel verwenden.

- Empfohlene oder gleichwertige Messgeräte verwenden.

- Nach Abschluss der Wartungsarbeiten das Gerät in den ursprünglichen Zustand zurück

versetzen und den einwandfreien Betrieb überprüfen.

3) Sicherheitsrelevante Wartungsteile

- Der Leistungsschutzschalter, der Türschalter, die Sicherung, der Thermostat, die Ther-

mosicherung, der Thermistor, die IC-RAMs einschließlich der Lithiumakkus usw. sind besonders sicherheitsrelevant. Sie müssen unbedingt korrekt gehandhabt und installiert werden. Wenn diese Teile kurzgeschlossen und funktionsunfähig werden, kann dies zu schwerwiegenden Schäden, wie einem Abbrand, führen. Kurzschlüsse sind zu vermeiden, und es sind ausschließlich Teile zu verwenden, die von der Toshiba TEC Corporation empfohlen sind.

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4) Warnetiketten

- Im Rahmen der Wartung unbedingt das Leistungsschild und die Etiketten mit Warnhinweisen

überprüfen [z. B. „Unplug the power cable during service“ („Netzkabel vor Beginn der Wartungsarbeiten abziehen“), „CAUTION. HOT“ („VORSICHT, HEISS“), „CAUTION. HIGH VOLTAGE“ („VORSICHT, HOCHSPANNUNG“), „CAUTION. LASER BEAM“ („VORSICHT, LASER“) usw.], um sicherzustellen, dass sie nicht verschmutzt sind und korrekt am Gerät angebracht sind.

Certification label (For UC)

Explanatory label

Identification label

For UC

For EU

For others

Warning for high-temperature areas (ventilation holes

Warning for high-temperature areas (fuser unit

)

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5) Entsorgung des Geräts, der Verbrauchs- und Verpackungsmaterialien, alter Akkus und IC-RAMs

- In Bezug auf die Entsorgung und Wiederverwertung des Geräts, der Verbrauchs- und Verpack-

ungsmaterialien, alter Akkus und IC-RAMs, einschließlich Lithiumakkus, sind die einschlägigen nationalen oder regionalen Vorschriften zu befolgen.

Caution:

Dispose of used batteries and IC-RAMs including lithium batteries according to this manual.

Attention:

Se débarrasser de batteries et IC-RAMs usés y compris les batteries en lithium selon ce manuel.

Vorsicht:

Entsorgung der gebrauchten Batterien und IC-RAMs (inclusive der Lithium-Batterie) nach diesem Handbuch.

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• Laseremissionseinheit

Diese Einheit besteht aus der Laserdiode, dem Fokussierungsobjektiv, der Blende und dem Zylinderobjektiv.

- Laserdiode Diese Laserdiode zeichnet sich durch eine geringe Regeldifferenz, eine kleine Laservariation und einen niedrigen Schwellenstrom aus. Die Blende der Laseremissionseinheit ist unter dem Fokussierobjektiv angeordnet, um die Form der Laserstrahlen in der primären und sekundären Scanrichtung festzulegen. Die Laserdiode gibt Laserstrahlen als Reaktion auf die Signale der Laseremissionssteuerung (ein/ aus) von der Lasertreiber-PC-Platine (LDR) aus. Die durch das Fokussierobjektiv geführten Laserstrahlen werden auf die Trommeloberfläche fokussiert.

- Vorsichtsmaßnahmen im Zusammenhang mit Lasern Dieses Gerät enthält eine Laserdiode, die einen unsichtbaren Laserstrahl emittiert. Da man diesen Laserstrahl nicht sehen kann, ist bei der Handhabung der Komponenten der optischen Lasereinheit, bei der Durchführung von Arbeiten und bei der Justierung des Laserstrahls äußerste Vorsicht geboten. Arbeiten dürfen niemals anhand anderer als den vorgeschriebenen Anleitungen durchgeführt werden; andernfalls kann es zu einer Schädigung Exposition durch Laserstrahlung kommen. Die Lasereinheit ist vollständig mit einer Schutzabdeckung versiegelt. Solange ausschließlich die Arbeitsschritte der vorgeschriebenen Anleitungen durchgeführt werden, tritt der Laserstrahl nicht aus, und es besteht keine Gefahr, der Laserstrahlung ausgesetzt zu werden.

Das folgende Laser-Warnetikett ist an der Abdeckung vorne rechts angebracht.

• Warnhinweise:

- Setzen Sie sich während der Wartungsarbeiten nicht dem Laserstrahl aus.

Dieses Gerät ist mit einer Laserdiode ausgestattet. Es ist unbedingt zu vermeiden, direkt in den Laserstrahl zu blicken. Keine reflektierenden Teile oder Werkzeuge, wie z. B. Schraubendreher, in den Pfad des Laserstrahls halten. Vor den Wartungsarbeiten sämtliche reflektierenden Metallgegenstände, wie Uhren, Ringe usw., entfernen.

- Bei Wartungsarbeiten am eingeschalteten Gerät dürfen keine unter Strom stehenden, drehbaren

oder betriebsrelevanten Bereiche berührt werden. Nicht direkt in den Laserstrahl blicken.

- Im Rahmen der Wartung unbedingt das Leistungsschild und die Etiketten mit Warnhinweisen

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e-STUDIO181/211

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

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

1.2 Accessories ......................................................................................................................... 1-4

1.3 Options ................................................................................................................................ 1-5

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............................................................................................................ 2-4

2.2.1 Scanner, control panel ............................................................................................. 2-4

2.2.2 Power supply section, switches................................................................................ 2-5

2.2.3 Laser optical unit, fuser unit, toner cartridge section ................................................ 2-6

2.2.4 Developer unit section .............................................................................................. 2-7

2.2.5 Driving section .......................................................................................................... 2-8

2.2.6 Drawer section ......................................................................................................... 2-9

2.2.7 Bypass unit ............................................................................................................. 2-10

2.3 Symbols and Functions of Various Components............................................................... 2-11

2.4 General Description........................................................................................................... 2-15

2.4.1 System block diagram ............................................................................................ 2-15

2.4.2 Construction of boards ........................................................................................... 2-16

2.5 Disassembly and Replacement of Covers......................................................................... 2-18

2.5.1 Front cover ............................................................................................................. 2-18

2.5.2 Inner tray ................................................................................................................ 2-18

2.5.3 Left cover................................................................................................................ 2-18

2.5.4 Tray rear cover ....................................................................................................... 2-19

2.5.5 Front right cover ..................................................................................................... 2-19

2.5.6 Front upper cover ................................................................................................... 2-19

2.5.7 ADU cover .............................................................................................................. 2-20

2.5.8 Right front cover ..................................................................................................... 2-20

2.5.9 Right rear cover ...................................................................................................... 2-21

2.5.10 Rear cover.............................................................................................................. 2-21

2.6 Disassembly and Replacement of PC boards ................................................................... 2-22

2.6.1 MAIN board (MAIN) ................................................................................................ 2-22

2.6.2 SRAM board (SRAM) ............................................................................................. 2-23

2.6.3 Fuse PC board (FUS)............................................................................................. 2-24

2.6.4 Switching regulator unit (PS) .................................................................................. 2-24

2.6.5 Switching regulator cooling fan (M6) ...................................................................... 2-27

2.7 Removal and Installation of Options .................................................................................. 2-28

2.7.1 MR-2020 (Automatic Document Feeder (ADF))/

MR-3023 (Reversing Automatic Document Feeder (RADF)) ................................. 2-28

2.7.2 MY-1027 (Paper Feed Unit (PFU))......................................................................... 2-30

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 e-STUDIO165/205 ................................................................................. 3-13

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

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

4.2 Description of Operation...................................................................................................... 4-2

4.2.1 Warming-up .............................................................................................................. 4-2

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

CONTENTS

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4.2.3 Drawer feed copying ................................................................................................ 4-3

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

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

4.3 Detection of Abnormality...................................................................................................... 4-5

4.3.1 Types of abnormality ................................................................................................ 4-5

4.3.2 Description of abnormality ........................................................................................ 4-6

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

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

5.2 Items Displayed on Control Panel ....................................................................................... 5-2

5.3 Relation between Equipment State and Operation.............................................................. 5-4

5.4 Operation............................................................................................................................. 5-5

5.4.1 Block diagram........................................................................................................... 5-5

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

5.5 Disassembly and Replacement ........................................................................................... 5-6

5.5.1 Control panel unit ..................................................................................................... 5-6

5.5.2 Control panel PC board (LPNL) ............................................................................... 5-6

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

6.1 General Description............................................................................................................. 6-1

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

6.3 Functions ............................................................................................................................. 6-3

6.4 Description of Operation...................................................................................................... 6-5

6.4.1 Scanning operation .................................................................................................. 6-5

6.4.2 Scan motor drive circuit ............................................................................................ 6-6

6.5 Contact Image Sensor Unit Control Circuit.......................................................................... 6-8

6.5.1 Exposure LED control circuit .................................................................................... 6-8

6.5.2 CCD control circuit ................................................................................................... 6-9

6.6 Disassembly and Replacement ......................................................................................... 6-10

6.6.1 Original glass.......................................................................................................... 6-10

6.6.2 Scanner top cover .................................................................................................. 6-11

6.6.3 Scan motor (M1)..................................................................................................... 6-11

6.6.4 CIS home position sensor (S1) .............................................................................. 6-13

6.6.5 Platen sensor (S2).................................................................................................. 6-13

6.6.6 CIS unit (CIS) ......................................................................................................... 6-14

6.6.7 CIS case ................................................................................................................. 6-16

6.6.8 CIS unit drive belt-1 ............................................................................................... 6-17

6.6.9 CIS unit drive belt-2 ................................................................................................ 6-18

7. LASER OPTICAL UNIT ................................................................................................ 7-1

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

7.2 Structure .............................................................................................................................. 7-2

7.3 Laser Diode Control Circuit..................................................................................................7-5

7.4 Polygonal Motor Control Circuit ........................................................................................... 7-6

7.5 Disassembly and Replacement ........................................................................................... 7-7

7.5.1 Laser optical unit ...................................................................................................... 7-7

8. DRIVE UNIT .................................................................................................................. 8-1

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

8.2 Configuration ....................................................................................................................... 8-2

8.3 Functions ............................................................................................................................ 8-3

8.4 Main Motor Control Circuit...................................................................................................8-4

8.5 Disassembly and Replacement ........................................................................................... 8-6

8.5.1 Main motor (M3) ....................................................................................................... 8-6

8.5.2 Toner motor (M2) ..................................................................................................... 8-6

8.5.3 Main motor drive unit................................................................................................ 8-7

Page 15

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

9.1 General Description............................................................................................................. 9-1

9.2 Configuration ....................................................................................................................... 9-2

9.3 Functions ............................................................................................................................. 9-3

9.4 Operation............................................................................................................................. 9-5

9.4.1 Drawer ...................................................................................................................... 9-5

9.4.2 Bypass tray............................................................................................................... 9-7

9.4.3 General operation..................................................................................................... 9-9

9.5 Disassembly and Replacement ......................................................................................... 9-10

9.5.1 Bypass unit ............................................................................................................. 9-10

9.5.2 Bypass tray............................................................................................................. 9-11

9.5.3 Bypass separation pad .......................................................................................... 9-11

9.5.4 Bypass roller unit .................................................................................................... 9-12

9.5.5 Bypass pickup roller .............................................................................................. 9-14

9.5.6 Bypass feed roller .................................................................................................. 9-14

9.5.7 Bypass paper sensor (S8) ...................................................................................... 9-14

9.5.8 Bypass pickup solenoid (SOL2) ............................................................................. 9-15

9.5.9 Bypass pickup clutch / Bypass feed clutch............................................................. 9-16

9.5.10 Damp heater unit (DH3) / Dummy plate ................................................................. 9-18

9.5.11 Paper empty sensor (S7) ....................................................................................... 9-18

9.5.12 Pickup roller ........................................................................................................... 9-19

9.5.13 Registration clutch (CLT1)...................................................................................... 9-20

9.5.14 Pickup solenoid (SOL1).......................................................................................... 9-20

9.5.15 Drawer pickup clutch .............................................................................................. 9-21

9.5.16 Registration roller (rubber) ..................................................................................... 9-22

9.5.17 Registration roller (metal) ....................................................................................... 9-23

9.5.18 Feed gear unit ........................................................................................................ 9-24

9.5.19 Drawer detection switch (SW5) .............................................................................. 9-24

9.5.20 Registration sensor (S4)......................................................................................... 9-25

10. DRUM RELATED SECTION....................................................................................... 10-1

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

10.2 Configuration ..................................................................................................................... 10-2

10.3 Functions ........................................................................................................................... 10-3

10.4 High-Voltage Output Control Circuit .................................................................................. 10-5

10.4.1 General description ................................................................................................ 10-5

10.4.2 Description of Operation......................................................................................... 10-6

10.5 Drum Temperature Detection Circuit ................................................................................. 10-7

10.5.1 General description ................................................................................................ 10-7

10.5.2 Circuit configuration ................................................................................................ 10-7

10.6 Temperature/Humidity Detection Circuit............................................................................ 10-8

10.6.1 General Description................................................................................................ 10-8

10.6.2 Circuit configuration ................................................................................................ 10-8

10.7 Disassembly and Replacement ......................................................................................... 10-9

10.7.1 Process unit............................................................................................................ 10-9

10.7.2 Drum cleaner unit ................................................................................................. 10-10

10.7.3 Discharge LED (ERS) .......................................................................................... 10-11

10.7.4 Main charger ........................................................................................................ 10-12

10.7.5 Main charger grid ................................................................................................ 10-12

10.7.6 Main charger cleaner............................................................................................ 10-13

10.7.7 Needle electrode ................................................................................................. 10-13

10.7.8 Drum .................................................................................................................... 10-14

10.7.9 Drum cleaning blade ........................................................................................... 10-14

10.7.10Drum separation finger ....................................................................................... 10-14

10.7.11Recovery blade ................................................................................................... 10-15

CONTENTS

Page 16

10.7.12Transfer/Separation charger................................................................................ 10-15

10.7.13Charger wire ....................................................................................................... 10-16

10.7.14Transfer unit......................................................................................................... 10-17

10.7.15Ozone filter ......................................................................................................... 10-18

10.7.16Exhaust fan (M5) ................................................................................................. 10-19

10.7.17Temperature/humidity sensor (S3) ...................................................................... 10-20

10.7.18Toner cartridge interface PC board (CTIF).......................................................... 10-21

11. DEVELOPMENT SYSTEM..........................................................................................11-1

11.1 General Description ........................................................................................................... 11-1

11.2 Construction....................................................................................................................... 11-2

11.3 Functions ........................................................................................................................... 11-3

11.3.1 Function of each unit .............................................................................................. 11-3

11.3.2 Functions of the toner cartridge PC board (CTRG) ................................................ 11-4

11.3.3 Recovered toner supply mechanism ...................................................................... 11-6

11.4 Toner Motor Control Circuit ............................................................................................... 11-7

11.5 Auto-Toner Circuit.............................................................................................................. 11-8

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

11.5.2 Function of auto-toner sensor ................................................................................ 11-9

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

11.6.1 Developer unit ...................................................................................................... 11-11

11.6.2 Developer material .............................................................................................. 11-12

11.6.3 Filling developer unit with developer material....................................................... 11-13

11.6.4 Auto-toner sensor (S6) ......................................................................................... 11-14

11.6.5 Drum thermistor (THMS4) .................................................................................... 11-14

11.6.6 Guide roller / Developer sleeve ............................................................................ 11-14

11.6.7 Mixer ..................................................................................................................... 11-18

11.6.8 Replacement of Oil Seal....................................................................................... 11-20

12. FUSER / EXIT UNIT ....................................................................................................12-1

12.1 General Description ........................................................................................................... 12-1

12.2 Configurations.................................................................................................................... 12-2

12.3 Functions ........................................................................................................................... 12-3

12.4 Operation ........................................................................................................................... 12-4

12.5 Fuser Unit Control Circuit ..................................................................................................12-5

12.5.1 Configuration .......................................................................................................... 12-5

12.5.2 Temperature detection section............................................................................... 12-6

12.6 Disassembly and Replacement ....................................................................................... 12-11

12.6.1 Fuser/Paper exit unit ............................................................................................ 12-13

12.6.2 Pressure roller unit / Fuser roller unit .................................................................. 12-13

12.6.3 Exit roller .............................................................................................................. 12-14

12.6.4 Exit sensor (S5) ................................................................................................... 12-15

12.6.5 Separation finger ................................................................................................ 12-17

12.6.6 Center heater lamp / Side heater lamp (LAMP1/LAMP2)..................................... 12-17

12.6.7 Fuser roller .......................................................................................................... 12-18

12.6.8 Pressure roller ..................................................................................................... 12-19

12.6.9 Center thermistor / Side thermistor / Edge thermistor (THMS1/THMS2/THMS3) 12-20

12.6.10Fuser thermostat (THMO1).................................................................................. 12-21

13. POWER SUPPLY UNIT .............................................................................................. 13-1

13.1 Construction....................................................................................................................... 13-1

13.2 Operation of DC Output Circuit.......................................................................................... 13-2

13.3 Output Channel ................................................................................................................. 13-3

13.4 Fuse................................................................................................................................... 13-4

13.5 Configuration of Power Supply Unit................................................................................... 13-5

13.6 AC Wire Harness ............................................................................................................... 13-6

Page 17

14. EXTERNAL COUNTERS ............................................................................................14-1

14.1 Outline ............................................................................................................................... 14-1

14.2 Signal................................................................................................................................. 14-1

14.2.1 Pin Layout .............................................................................................................. 14-1

14.2.2 Details of the signals .............................................................................................. 14-2

14.3 Notices............................................................................................................................... 14-3

14.3.1 Setting code ........................................................................................................... 14-3

14.3.2 Setting value change and restrictions when using the totalizer (DocuLyzerNW) ... 14-3

14.3.3 Setting value change and restrictions when using the coin controller .................... 14-3

14.3.4 Simultaneous Installation of External Counters...................................................... 14-3

15. PC BOARDS ............................................................................................................... 15-1

CONTENTS

Page 18

Page 19

1. SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES

1.1 Specifications

Values in [ ] are for e- STUDIO211 in case that the specification is different among e-STUDIO181 and e-STUDIO211.

 Copy process Indirect electrophotographic process (dry)  Type Desktop type  Original table Fixed type (the left rear corner used as guide to place originals)  Accepted originals Sheet, book and 3-dimensional object. The automatic document feeder

(ADF) only accepts paper which are not pasted or stapled. (Single-sided

originals: 50 to 127 g/m either. Maximum size: A3/LD

 Copy speed (Copies/min.) e-STUDIO181

Paper size Drawer

A4, B5, LT 18 16 11 16

A5-R, ST-R - 16 11 -

A4-R, B5-R, LT-R 15.5 15.5 11 15.5

B4, LG, FOLIO, COMPUTER 13 13 11 13

A3 , L D 11 11 11 11

/13 to 34 lb. Bond) Carbon paper are not acceptable

Bypass feed

Size specified Size not specified

PFU

e-STUDIO211

Paper size Drawer

A4, B5, LT 21 20 11 20

A5-R, ST-R - 20 11 -

A4-R, B5-R, LT-R 15.5 15.5 11 15.5

B4, LG, FOLIO, COMPUTER 13 13 11 13

A3 , L D 11 11 11 11

Size specified Size not specified

Bypass feed

PFU

* “–” means “Not acceptable”. * The copy speed in the above table are available when originals are manually placed for single side,

multiple copying.

* When the ADF is used, the copy speed of 16[20] 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: 16[20] or more.

• Reproduction ratio: 100%

1 - 1

SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES

Page 20

Copy speed for thick paper (Copies/min.) e-STUDIO181/211

Thick 1 (81 g/m

Thick 2 (106 g/m

to 105 g/m2, 21.3 lb. Bond to 28 lb. Bond): Bypass feed on a sheet by sheet basis only

to 163 g/m2, 28 lb. Bond to 90 lb. Index): Bypass feed on a sheet by sheet basis only

 Copy paper

Drawer PFU Bypass copy Remarks

Size A3, A4, A4-R, B4, B5,

Weight

Special

paper

B5-R, LD, LG, LT, LT-R, FOLIO, COMPUTER, 13"LG, 8.5" x 8.5", 8K, 16K, 16K-R

64 to 80 g/m

– Tracing paper, labels, OHP film

A3 to A5-R, LD to ST-R, FOLIO, COMPUTER, 13"LG, 8.5" x 8.5", 8K, 16K, 16K-R (Non-standard or user-specified sizes can be set.)

50 to 163 g/m2(Single paper feeding) 64 to 80 g/m2(Continuous feeding)

(thickness: 80 µm or thicker),

These special papers recommended by Toshiba Te c

 First copy time ..................... Approx. 7.6 sec. (A4, 100%, original placed manually)

Approx. 7.7 sec. (LT, 100%, original placed manually)

 Warming-up time.................. Approx. 25 sec. (temperature: 20°C)

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

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

Zooming: 25 to 200% in increments of 1%

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

Printing: Equivalent to 2400 dpi x 600 dpi Gradation: 256 steps

 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 ......................... Standard drawer:

1 drawer (stack height 28 mm, equivalent to 250 sheets; 64 to

80 g/m

(17 to 22 lb. Bond))

Bypass feeding:

Stack height 11.8 mm: equivalent to 100 sheets; 64 to 80 g/m (17 to 22 lb. Bond)

Paper Feed Unit (PFU):

Option (One drawer: stack height 28 mm, equivalent to 250

sheets; 64 to 80 g/m

(17 to 22 lb. Bond))

 Capacity of originals in the automatic document feeder (Option)

.................................................. A3 to A5-R, LD to ST-R:

100 sheets / 80 g/m

(Stack height 16 mm or less)

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

Toner cartridge replacing method (There is a recovered toner supply mechanism.)

 Density control........................ Automatic density mode and manual density mode selectable in 7

steps

1 - 2

Page 21

 Weight.................................. Approx. 31.8 kg ( 70.11 lb.) (for NAD and others)

Approx. 32.9 kg ( 72.53 lb.) (for MJD and CND) Approx. 34.2 kg ( 75.40 lb.) (for AUD)

 Power requirements............. AC 110 V / 13.2 A, 115 V or 127 V / 12 A

220-240 V or 240 V / 8 A (50/60 Hz)

* The acceptable value of each voltage is ±10%.

 Power consumption ............. 1.5 kW or less (100 V series)

1.6 kW or less (200 V series)

* The electric power is supplied to the ADF and PFU through the equipment.

 Total counter ........................ Electronical counter

 Dimensions of the equipment

.................................................. W 600 x D 643 x H 462.5 (mm): See the figure below

Fig. 1-1

1 - 3

SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES

Page 22

1.2 Accessories

Unpacking/setup instruction 1 set

Operator’s manual 1 pc.

Operator’s manual pocket 1 pc. (for NAD)

Power cable 1 pc.

CD-ROM 2 pcs.

Rubber cap 6 pcs. (for MJD, ASD, ASU and SAD)

2 pcs. (for NAD, CND, AUD, TWD, KRD and ARD)

Transfer charger wire cleaner (installed inside of the transfer cover)

Drum (installed inside of the equipment) 1 pc.

Developer material 1 pc.

Nozzle 1 pc. (for NAD)

Toner cartridge 1 pc.

Warranty sheet 1 pc. (for NAD and CND)

Setup report 1 set (for NAD, MJD and CND)

Customer satisfaction card 1 pc. (for MJD)

Packing list 1 pc. (for CND)

Customer survey sheet 1 pc. (for CND)

Certificate of conformance 1 pc. (for CND)

1 pc.

* Machine version

NAD: North America ASD: Hong Kong / Latin America AUD: Australia MJD: Europe ASU: Asia / Saudi Arabia SAD: Saudi Arabia ARD: Latin America CND: China TWD: Taiwan KRD: Korea JPD: Japan

1 - 4

Page 23

1.3 Options

Platen Cover KA-1650PC/PCC

Automatic Document Feeder (ADF) MR-2020

Paper Feed Unit (PFU) MY-1027

Expansion Memory GC-1240

Damp Heater MF-1640U/E

Harness Kit GQ-1130

Desk MH-1640

Operator's Manual Pocket KK-1660/1660C

1 - 5

SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES

Page 24

1.4 Supplies

Drum OD-1600 (except for China)

OD-2320 (for China)

Developer material D-2320 (except for China)

D-2320C (for China)

Toner cartridge PS-ZT1810(1)(for North America)

PS-ZT1810A(1)(for Latin America) PS-ZT1810D(1)(for Asia) PS-ZT1810D5k(1)(for Asia) PS-ZT1810C(1)(for China) PS-ZT1810C10k(1)(for China) PS-ZT1810C5k(1)(for China) PS-ZT1810T(1)(for Taiwan) PS-ZT1810T5k(1)(for Taiwan) PS-ZT1810E(1)(for Europe) PS-ZT1810E5K(1)(for Europe)

1 - 6

Page 25

1.5 System List

Expansion

Memory

GC-1240

Platen Cover

KA-1650PC

Paper Feed

Unit (PFU

MY-1027

Automatic

Document Feeder

(

ADF

MR-2020

)

Fig. 1-2

Desk

MH-1640

1 - 7

SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES

Page 26

1 - 8

Page 27

2. OUTLINE OF THE MACHINE

2.1 Sectional View

1. Front side

A2 A1A3

J7J6

J4J5 J8

I4 I3I2I6I8

I11

F1F2F3

I10K1

Fig. 2-1

A1 Original glass

A2 ADF original glass

A3 Contact image sensor unit (CIS)

A4 Scanner damp heater (Left side) DH1

A5 Scanner damp heater (Right side) DH2

A6 Scanner damp heater thermostat THMO2

B1 Laser optical unit

B2 Polygonal motor M4

C1 Pickup roller

C2 Separation claw

C3 Paper empty sensor S7

C4 Registration sensor S4

C5 Registration roller

E1 Bypass pickup roller

E2 Bypass feed roller

E3 Bypass separation pad

E4 Bypass paper sensor S8

E5 Bypass tray

B1B2 C1 C2C3

K5 J3 J9

J1 J2 I7 H4 H5

H1 G2 G1 G3 I1

E2 E1

2 - 1

OUTLINE OF THE MACHINE

Page 28

F1 Needle electrode

F2 Main charger

F3 Main charger grid

F4 Toner cartridge

G1 Transfer charger wire

G2 Separation charger wire

G3 Transfer guide roller

H1 Drum

H2 Discharge LED

H3 Drum cleaning blade

H4 Recovery blade

H5 Drum separation finger

I1 Developer sleeve (Magnetic roller)

I2 Mixer-1

I3 Mixer-2

I4 Mixer-3

I5 Doctor blade

I6 Auto-toner sensor S6

I7 Toner recovery auger

I8 Toner recycle auger

I9 Drum thermistor THMS4

I10 Drum damp heater DH3

I11 Drum damp heater thermostat THMO3

J1 Fuser roller

J2 Pressure roller

J3 Fuser roller separation finger

J4 Center heater lamp LAMP1

J5 Side heater lamp LAMP2

J6 Center/Side/Edge thermistor THMS1/2/3

J7 Fuser thermostat THMO1

J8 Exit roller

J9 Exit sensor S5

K1 Front cover opening/closing switch SW4

K2 Front cover opening/closing interlock switch SW3

K3 Temperature/humidity sensor S3

K4 Switching regulator

K5 ADU cover opening/closing interlock switch SW2

2 - 2

Page 29

2. Rear side

M1 M2

S2 S1

M1 Scan motor

M2 Toner motor

M3 Main motor

M5 Exhaust fan

M6 Switching regulator cooling fan

S1 CIS home position sensor

S2 Platen sensor

SW5 Drawer detection switch

CLT1 Registration clutch

SOL1 Pickup solenoid

SOL2 Bypass pickup solenoid

CLT1

SW5

Fig. 2-2

M3SOL1SOL2 M6

2 - 3

OUTLINE OF THE MACHINE

Page 30

2.2 Electric Parts Layout

2.2.1 Scanner, control panel

DH1

DH2

THMO2

CIS

LPNL

Fig. 2-3

2 - 4

Page 31

2.2.2 Power supply section, switches

SW3

SW2

SW4

SW1

Fig. 2-4

2 - 5

OUTLINE OF THE MACHINE

Page 32

2.2.3 Laser optical unit, fuser unit, toner cartridge section

CTIF

CTRG

SNS

LDR

LAMP1

LAMP2

THMO1

THMS1

THMS2

THMS3

Fig. 2-5

2 - 6

Page 33

2.2.4 Developer unit section

ERS

THMS4

FUS

THMO3

DH3

Fig. 2-6

2 - 7

OUTLINE OF THE MACHINE

Page 34

2.2.5 Driving section

SRAM

MAIN

CLT1

SOL1

Fig. 2-7

2 - 8

Page 35

2.2.6 Drawer section

SW5

Fig. 2-8

2 - 9

OUTLINE OF THE MACHINE

Page 36

2.2.7 Bypass unit

SOL2

Fig. 2-9

2 - 10

Page 37

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 Name Function Remarks P-I

M1 SCAN-MOT

Scan motor

M2 TNR-MOT

Toner motor

M3 MAIN-MOT

Main motor

M4 M/DC-POL

Polygonal motor

M5 EXT-FAN-MOT

Exhaust fan

M6 PS-FAN-MOT

Switching regulator cooling fan

Driving the CIS Fig. 2-3 10-1

Supplying the toner Fig. 2-5 12-15

Driving the drum, developer unit, registration roller, Pickup roller, feed roller, cleaner unit

Driving the polygonal mirror Fig. 2-5 5-13

Exhausting ozone and cooling down the equipment inside

Cooling down the switching regulator Fig. 2-4 5-11

Fig. 2-7 12-2

Fig. 2-6 11-23

2 - 11

OUTLINE OF THE MACHINE

Page 38

2. Sensors and switches

Symbol Name Function Remarks P-I

S1 HOME-SNR

CIS home position sensor

S2 PLTN-SNR

Platen sensor

S3 TEMP/HUMI-SNR

Temperature/humidity sensor

S4 RGST-SNR

Registration sensor

S5 EXIT-SNR

Exit sensor

S6 ATTNR-SNR

Auto-toner sensor

S7 EMP-SNR

Paper empty sensor

S8 SFB-SNR

Bypass paper sensor

SW1 MAIN-SW

Main switch

SW2 ADU-COV-INTLCK-SW

ADU cover opening/closing interlock switch

SW3 FRNT-COV-INTLCK-SW

Front cover opening/closing interlock switch

Detecting CIS home position Fig. 2-3 9-101

Detecting the opening/closing of platen

Fig. 2-3 9-101

cover or RADF

Detecting the temperature and humidity

Fig. 2-4 5-16

inside the equipment

Detecting the transporting paper at the

Fig. 2-7 15-107

registration roller section

Detecting the transporting paper at the

Fig. 2-5 24-8

exit section

Detecting the density of toner in the

Fig. 2-6 21-46

developer unit

Detecting presence/absence of paper

Fig. 2-8 15-107

in the drawer

Detecting presence/absence of paper

Fig. 2-9 13-101

on the bypass tray

Turning ON/OFF of the equipment Fig. 2-4 5-4

Controlling cutoff and supply of the 24V

Fig. 2-4 6-8 voltage by opening/closing of the ADU cover

Controlling cutoff and supply of the 24V

Fig. 2-4 1-5 voltage by opening/closing of the front cover

SW4 FRNT-COV-SW

Front cover opening/closing switch

SW5 CST-SW

Drawer detection switch

Detecting the opening/closing of the front cover

Detecting presence/absence of the drawer

Fig. 2-4 1-101

Fig. 2-8 16-110

3. Electromagnetic clutches

Symbol Name Function Remarks P-I

CLT1 RGST-CLT

Driving the registration roller Fig. 2-7 16-21

Registration clutch

4. Solenoids

Symbol Name Function Remarks P-I

SOL1 CST-SOL

Pickup solenoid

SOL2 SFB-SOL

Bypass pickup solenoid

Controlling the power transmission of the feed roller

Controlling the power transmission of the bypass pickup roller

Fig. 2-7 16-9

Fig. 2-9 14-15

2 - 12

Page 39

5. PC boards

Symbol Name Function Remarks P-I

MAIN PWA-F-MAIN

Main PC board (MAIN board)

SRAM PWA-F-SRAM

SRAM PC board (SRAM board)

LDR PWA-F-LDR

Controlling the whole system and

Fig. 2-7 7-1 image processing

Storing the setting information of the

Fig. 2-7 7-33 equipment

Driving the laser diode Fig. 2-5 5-13

Laser driving PC board (LDR board)

SNS PWA-F-SNS

Detecting the laser beam position Fig. 2-5 5-13

H-sync signal detection PC board (SNS board)

LPNL PWA-F-LPNL

Control panel PC board

Detecting the button entry and controlling LED on the control panel

Fig. 2-3 4-15

(LPNL board)

CTIF PWA-F-CTIF

Toner cartridge interface PC board (CTIF board)

CTRG PWA-F-CTRG

Interface for detecting the toner cartridge (Detecting the CTRG board)

Storing the status of the toner cartridge Fig. 2-5 103-3

Fig. 2-5 7-30

Toner cartridge PC board (CTRG board)

FUS PWA-F-FUS

Fuse PC board (FUS board)

Supplying power to each damp heater * Optional for NAD/MJD/CND model,

Fig. 2-6 7-12

standard for other models

6. Lamps and heaters

Symbol Name Function Remarks P-I

LAMP1 CNTR-LAMP

Center heater lamp

LAMP2 SIDE-LAMP

Side heater lamp

ERS LP-ERS

Discharge LED

DH1 SCN-DH-L

Scanner damp heater (Left)

DH2 SCN-DH-R

Scanner damp heater (Right)

DH3 DRM-DH

Drum damp heater

Heating the center section of the fuser roller

Heating the section of both sides of the fuser roller

Removing the residual charge from the drum surface

Preventing condensation in the scanner unit * Optional for NAD/MJD/CND model,

standard for other models

Preventing condensation in the scanner unit * Optional for NAD/MJD/CND model,

standard for other models

Preventing condensation of the drum * Optional for NAD/MJD/CND model,

standard for other models

Fig. 2-5 23-12

Fig. 2-5 23-13

Fig. 2-6 20-13

Fig. 2-3 9-17

Fig. 2-3 9-18

Fig. 2-6 8-6

2 - 13

OUTLINE OF THE MACHINE

Page 40

7. Thermistors and thermostats

Symbol Name Function Remarks P-I

THMS1 THMS-C-HTR

Center thermistor

Detecting the surface temperature at the center of the fuser roller (for

Fig. 2-5 23-6

controlling the center heater lamp)

THMS2 THMS-S-HTR

Side thermistor

Detecting the surface temperature at the rear side of the fuser roller (for

Fig. 2-5 23-6

controlling the side heater lamp)

THMS3 THMS-EDG-HTR

Edge thermistor

Detecting the surface temperature at the edge of the rear side of the fuser

Fig. 2-5 23-6

roller (for preventing overheating)

THMS4 THMS-DRM

Drum thermistor

THMO1 THERMO-FSR

Detecting the temperature on the drum

Fig. 2-6 21-49 surface

Preventing overheating in the fuser unit Fig. 2-5 23-5

Fuser thermostat

THMO2 THERMO-SCN-DH

Scanner damp heater thermostat

Preventing overheating of the scanner damp heater

Fig. 2-3 9-20

* Optional for NAD/MJD/CND model,

standard for other models

THMO3 THERMO-DRM-DH

Drum damp heater thermostat

Preventing overheating of the drum damp heater

Fig. 2-6 8-7

* Optional for NAD/MJD/CND model,

standard for other models

8. Others

Symbol Name Function Remarks P-I

CIS CIS

Contact image sensor unit

PS PS-ACC

Switching regulator

Reading originals Fig. 2-3 9-8

• Generating DC voltage and

Fig. 2-4 5-2

supplying it to each section of the equipment

• Generating high voltage and supplying it to the main charger, developer, transfer and separation units

• Supplying AC power to the heater lamp

2 - 14

Page 41

2.4 General Description

2.4.1 System block diagram

Control panel

Download JIG

I/O

Solenoids

Sensors

Clutches

Switches

Bypass unit

Motors

PFU

Copy key card /

Coin controller

USB connector (device)

SDRAM bus (16 bit)

AFE

SDRAM

Driver

64 MB

16 MB

SRAM

SRAM board

D/A converter

128 kB

Battery

SoC

(System controller)

CPU bus (16 bit)

: Option

ASIC

(I/O port)

2 MB

Flash ROM

A/D converter

MAIN board

(High voltage)

ASIC

ADF

CIS

Scan motor

LVPS

HVPS

Power supply unit

AC DC

Laser diode

LDR board

Laser optical unit

Laser beam sensor

SNS board

Drum thermistor

Auto-toner sensor

Developer unit

sensor

Thermistors

Temperature/humidity

Fuser unit

Fig. 2-10

OUTLINE OF THE MACHINE

2 - 15

Page 42

2.4.2 Construction of boards

[ 1 ] Construction diagram of boards

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

Control panel

LPNL

Toner cartridge

CTRGCTIF

Laser optical unit

LDR

SNS

AC input

Scanner unit

CIS

FUS

PS-ACC

Main switch Cover opening/closing

SRAM

HVPS

LVPS

interlock switches

DC power supply line

AC power supply line

Signal line

MAIN

Fig. 2-11

[ 2 ] Function of each board

• MAIN board: This is the board taking the leading part in all systems. It consists of the SoC, ASIC, memory (SDRAM, Flash ROM), etc. In the SoC (System control), which is a core of this MAIN board, the functions of the CPU, image processing, page memory control, CODEC, external interface (USB) control, etc. are embedded and performed by one chip. Based on the data input from the control panel, the SoC controls each system, such as the ASIC, each memory, CIS unit and laser optical unit, and thus permitting the scanning of originals and the printing of data.

• SRAM board: This is the board on which the SRAM for storing the user's setting information and counter value and its backup function are mounted. When the MAIN board is replaced, attaching this board to the new MAIN board can assume the data of the previous equipment.

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

• CTRG board: This is the board on which the IC chip for storing information about the toner cartridge (number of prints, identification data, etc.) is mounted.

• CTIF board: This is the interface board with the CTRG board in the toner cartridge. Information written in the IC chip on the CTRG board is read into the SoC on the MAIN board through this board.

• LDR board: This is the board on which the laser diode and the ASIC are mounted. The laser is emitted based on the image data signal output from the SoC on the MAIN board.

2 - 16

Page 43

• 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 the SoC on the MAIN board.

• PS-ACC: This is the unit to generate each DC (high/low) voltage, which is used in the equipment, from the external AC electric power input. This is then provided to each electric part.

• FUS board: This is the board to provide AC electric power for driving the damp heater. * Optional for NAD/MJD/CND model, standard for other models.

•CIS: This is the unit witch performs optical-to-electrical conversion to convert the light reflected by the original into the electrical signals. It consists of a light source (LEDs), optical system, CCD sensor, etc.

2 - 17

OUTLINE OF THE MACHINE

Page 44

2.5 Disassembly and Replacement of Covers

2.5.1 Front cover

(1) Open the front cover. (2) Release the upper hinge. (3) Take off the front cover while lifting it up.

2.5.2 Inner tray

(1) Remove 2 screws and take off the Inner tray.

Front cover

Fig. 2-12

Inner tray

Fig. 2-13

2.5.3 Left cover

(1) Take off the Inner tray.

 P.2-18 "2.5.2 Inner tray"

(2) Remove 4 screws and take off the left cover.

Left cover

Fig. 2-14

2 - 18

Page 45

2.5.4 Tray rear cover

(1) Take off the left cover.

 P.2-18 "2.5.3 Left cover"

(2) Take off the tray rear cover.

2.5.5 Front right cover

(1) Take off the front cover.

 P.2-19 "2.5.5 Front right cover"

(2) Pull out the toner cartridge. (3) Open the ADU cover. (4) Remove 2 screws and take off the front right

cover.

Tray rear cover

Fig. 2-15

Front right cover

2.5.6 Front upper cover

(1) Remove 1 screw and take off the front upper

cover.

Fig. 2-16

Front upper cover

Fig. 2-17

2 - 19

OUTLINE OF THE MACHINE

Page 46

2.5.7 ADU cover

(1) Open the bypass tray. (2) Open the ADU cover. (3) Open the transfer unit and release the ADU

stopper on the front side.

(4) Remove 1 screw and take off the ADU

stopper on the rear side.

Note:

Be careful not to fall off the ADU cover when the screws are removed from the ADU stopper.

(5) Take off the ADU cover while sliding it toward

the right.

ADU stopperADU stopper

Fig. 2-18

ADU cover

2.5.8 Right front cover

(1) Take off the front cover.

 P.2-18 "2.5.1 Front cover"

(2) Open the ADU cover. (3) Pull out the drawer. (4) Remove 2 screws and take off the right front

cover.

Fig. 2-19

Right front cover

Fig. 2-20

2 - 20

Page 47

2.5.9 Right rear cover

(1) Open the ADU cover. (2) Remove 1 screw and take off the ADU

stopper on the rear side.

(3) Take off the 2 screw and take off the right

rear cover.

2.5.10 Rear cover

(1) Remove 5 screws and take off the rear

cover.

Right rear cover

Fig. 2-21

Fig. 2-22

Rear cover

2 - 21

OUTLINE OF THE MACHINE

Page 48

2.6 Disassembly and Replacement of PC boards

Note:

If the PC board has to be replaced due to an operational defect, this may have been caused by a contact failure of the connector. Before replacing the board, disconnect and then reconnect the connector to check if this action eliminates the operational defect.

2.6.1 MAIN board (MAIN)

(1) Take off the rear cover.

 P.2-21 "2.5.10 Rear cover"

(2) Disconnect 15 connectors.

Note:

Connect the flat harness to the MAIN board with its erectrode side down. An error “CA2” will be displayed if the connection is incorrect.

Fig. 2-23

(3) Remove 6 screws and take off the MAIN

board.

Notes:

1. When replacing the MAIN board, also attach the SRAM board to the new MAIN board from the old MAIN board.

2. Be sure to perform “08-389” after the SRAM board has been replaced.

3. Be sure to perform "05-310" with the platen cover or the ADF closed after replacing the MAIN board.

MAIN board

Fig. 2-24

2 - 22

Page 49

2.6.2 SRAM board (SRAM)

(1) Take off the rear cover.

 P.2-21 "2.5.10 Rear cover"

(2) Release 1 lock support and take off the

SRAM board.

Notes:

1. Be sure to perform “08-388” after the SRAM board has been replaced.

2. Perform "05-310" with the platen cover and the ADF closed after replacing the SRAM board.

SRAM board

Fig. 2-25

3. Make sure that the direction of the battery on the SRAM board is correct when replacing it.

SRAM board

Battery

Fig. 2-26

2 - 23

OUTLINE OF THE MACHINE

Page 50

2.6.3 Fuse PC board (FUS)

Note:

This fuse PC board is copacked with the damp heater unit. (The damp heater unit is optional for NAD, CND and MJD.)

(1) Take off the rear cover.

 P.2-21 "2.5.10 Rear cover"

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

Cover

Fig. 2-27

(3) Disconnect 2 connectors, remove 1 screw,

and then take off the fuse PC board by lifting it up.

2.6.4 Switching regulator unit (PS)

Note:

When the fuse PC board is installed as options, remove the rear cover ( P. 2 - 2 1 "2.5.10 Rear cover") and disconnect connectors before performing the procedure below.

Connector

Fuse PC board

Fig. 2-28

Connector

Fig. 2-29

2 - 24

Page 51

(1) Take off the left cover.

 P.2-18 "2.5.3 Left cover"

(2) Disconnect 13 connectors.

Fig. 2-30

Note:

Connect the connectors to the correct faston terminals on the switching regulator board. Connector Harness F. Red - Black-thick E. Blue - White-thick D. White - Black-thin C. White - Red-thin B. White - Red-thick A. White - White-thick

(3) Remove 2 screws, slide the switching

regulator unit with the whole case slightly to the front, and then lift it up to take it off.

Fig. 2-31

Switching regulator unit

Fig. 2-32

2 - 25

OUTLINE OF THE MACHINE

Page 52

(4) Disconnect 3 connectors. (5) Remove 1 screw and 1 ground wire.

Connector Connector

Fig. 2-33

Note:

Make sure that the position is correct when inserting the connector.

(6) Remove 8 screws, release 1 locking

supports, and take off the switching regulator board.

Green/Yellow

Black

White

White Gray

Black Brown

Locking support

Fig. 2-34

Switching regulator board

Fig. 2-35

2 - 26

Page 53

2.6.5 Switching regulator cooling fan (M6)

(1) Take off the left cover.

 P.2-18 "2.5.3 Left cover"

(2) Disconnect 1 connector and take off the

switching regulator cooling fan while sliding it upward.

Switching regulator cooling fan

Connector

Fig. 2-36

2 - 27

OUTLINE OF THE MACHINE

Page 54

2.7 Removal and Installation of Options

2.7.1 MR-2020 (Automatic Document Feeder (ADF))/MR-3023 (Reversing Automatic Document Feeder (RADF))

(1) Turn the power OFF and unplug the power

cable.

(2) Remove 1 screw and take off the connector

cover.

Fig. 2-37

(3) Remove the ground wire.

(4) Disconnect the connector.

Fig. 2-38

Fig. 2-39

2 - 28

Page 55

(5) Remove 1 screw on the rear right side.

(6) Remove 2 screws and take off the bracket on

the rear side.

Fig. 2-40

(7) Remove 1 screw and 1 washer on the rear

left side.

(8) Open the ADF.

Fig. 2-41

Fig. 2-42

Fig. 2-43

2 - 29

OUTLINE OF THE MACHINE

Page 56

(9) Remove 2 screws on the front side.

(10) Slide the ADF backward and take off by

lifting it up.

Fig. 2-44

2.7.2 MY-1027 (Paper Feed Unit (PFU))

(1) Turn the power OFF and unplug the power

cable.

(2) Remove 1 screw and take off the PFU

connector cover.

Fig. 2-45

Fig. 2-46

2 - 30

Page 57

(3) Remove the ground wire.

(4) Disconnect the connector.

Fig. 2-47

(5) Install the PFU connector cover.

(6) Take off the rear cover.

 P.2-21 "2.5.10 Rear cover"

(7) Disconnect 1 connector (optional damp

heater). Release the harness from the harness clamp.

Fig. 2-48

Fig. 2-49

Fig. 2-50

2 - 31

OUTLINE OF THE MACHINE

Page 58

(8) Take off the drawer of the equipment and

PFU drawer.

(9) Remove 1 screw and take off 1 fixing

brackets on the front left side.

Fig. 2-51

(10) Remove 1 screw and take off 1 fixing

brackets on the front right side.

(11) Remove 1 screw and take off 1 fixing

brackets on the rear left side.

Fig. 2-52

Fig. 2-53

Fig. 2-54

2 - 32

Page 59

(12) Remove 1 screw and take off 1 fixing

brackets on the rear right side.

(13) Lift up the equipment and take off the PFU.

Fig. 2-55

Fig. 2-56

2 - 33

OUTLINE OF THE MACHINE

Page 60

2 - 34

Page 61

3. COPY PROCESS

3.1 General Description of Copying Process

Paper exit

(2)

Data reading(scanning)

CIS

600 dpi,7084 pixel

Image processing

(1)

Charging

(grid voltage)

(3)

Data writing

Semiconductive laser

Pw=4.0 nJ/mm

(10)

Discharging

Discharge LED (red)

Wavelength 660nm x10pcs

-448V

(4)

Development

Magnetic roller

Bias -340VDC+AC

Fig. 3-1

(9)

Cleaning

Blade method

Toner

Carrier

(8)

Fusing

Lamp heating method

564W x2

(7)

H -107 µADC C -107 µADC L -70 µADC

(6)

H 340 µADC C 369 µADC L 282 µADC

(5)

DC +565V

Bypass feeding

(

100 sheets

Drawer feeding

(

250 sheets

PFU

(

250 sheets

Separation

Transfer

Transfer bias

)

(1) Charging: Applies negative charge on the

surface of the photoconductive drum.



(2) Data reading: The images on the original

are converted into electrical signals.



(3) Data writing: The electrical signals are

converted into light signal (laser emission) which exposes the surface of the photoconductive drum.



(4) Development: Negatively-charged toner

adheres to the photoconductive drum and forms visible image.



(5) Transfer bias: Improves transfer efficiency.



(6) Transfer: Transfers the visible toner image

on the photoconductive drum onto paper.



(7) Separation: Separates paper with the toner

image from the photoconductive drum.

(8) Fusing: Fuses the toner image onto the

paper by applying heat and pressure.

(9) Cleaning: Scrapes off the residual toner

from the drum.

(10) Discharging: Eliminates the residual

negative charge from the surface of the photoconductive drum.

3 - 1

COPY PROCESS

Page 62

3.2 Details of Copying Process

1. Photoconductive drum

The photoconductive drum consists of two layers.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. The photoconductor has the following property: when it is exposed to light, the electrical resistance it possesses increases or decreases according to the strength of the light. Example:

- Strong light Resistance is decreased (works as a conductor.)

- Weak light Resistance is increased (works as an insulator.)

Photoconductive layer

Base

Structure of the photoconductive drum

(

Example of OPC

Fig. 3-2

[Formation of electrostatic latent image] In the processes of charging, data reading, data writing, discharging described later, negative potential of the areas on the drum corresponding to black areas of the original are eliminated, while the areas on the drum corresponding to white areas retains the negative charge. As this image on the drum formed by the negative potential is not visible, it is called an “electrostatic latent image.”

)

Time (t

)

(

Black area of original

Surface potential

-500

Discharge

Charging

process

Electric potential of the photoconductive drum

Fig. 3-3

White area of original

3 - 2

Page 63

2. Charging Charging is the process to apply charge evenly on the drum surface. The needle electrode produces negative corona discharge is controlled by the grid, allowing the drum surface to be evenly charged with the negative potential. The surface potential on the drum is determined by the grid potential and is controlled to a certain value by the grid control circuit.

Main charger

Drum rotation

Grid control circuitHigh-voltage

transformer

Fig. 3-4

3. Data reading (scanning) Data reading is the process of illuminating the original with light and converting the reflected light into electrical signals. This equipment uses the CIS (Contact Image Sensor) for data reading. The optical image information read by the CIS is converted into electrical signals (image signals), which are then transmitted to the image processing section.

CIS

Image processing

Fig. 3-5

section

(Example)

Light receiving amount

Light

Dark

Value of image signals to be output

255

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

Fig. 3-6

3 - 3

COPY PROCESS

Page 64

4. Data writing Data writing is the process of converting the image signals sent from the image processing section into optical signal and exposing the drum surface with the light. Semiconductive laser element converts image signals transmitted from the image processing section into optical signal (laser emission) to expose the drum surface and form an electrostatic latent image on it.

Image

processing

section

LDR board

Polygonal mirror

Semiconductive laser element

Photo-

conductive

drum

Fig. 3-7

3 - 4

Page 65

5. Development Development is the process of making the electrostatic latent images visible to the eye (visible images). Developer material is supplied to the photoconductive 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 is applied to the magnetic roller (reverse development method).

Magnetic roller

Fig. 3-8

Drum

Magnetic roller

Bias voltage

- 357 VDC

Photoconductive drum

White background

Magnet

Halftone

Fig. 3-9

Toner

Carrier (always attracted onto the magnet

Toner

Photoconductive layer

Aluminum base

Solid

)

White background

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

The (-) potential of the photoconductive drum is lower than the developer bias.

- 440V

- 340V

- 300V

- 200V

- 100V

Fig. 3-10

Image not developed

Image developed by toner

Bias potential

- Charging AC bias

To obtain the stable development characteristics, AC bias (approx. 1,100 V) is charged to the development bias (DC bias).

3 - 5

COPY PROCESS

Page 66

- 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 caused by mixing.

Toner: Mainly consists of the resin and carbon. Carrier: Consists of the ferrite and resin coating on

its surface to provide consistent frictional electrification.

Note:

If the developer material is used for a long time (beyond 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.

Resin (90-95%

[

Toner

Carbon (

5-10%

approx. 12.5 μm

)

]

[

Carrier

Fig. 3-11

Toner

)

Ferrite

approx. 65 μm

]

Carrier

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

Fig. 3-12

3 - 6

Page 67

- Magnetic roller

Magnetic brush development The south and north poles are arranged inside the magnetic roller as shown in the right figure. The developer material forms a brush-like fluff which contacts the photoconductive drum surface.



This is caused by the magnetic force lines between the south and north poles.

Photoconductive drum

Magnetic roller

Fig. 3-13

Magnetic force line

3 - 7

COPY PROCESS

Page 68

- Additional Explanation

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

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

Size and density of originals

The existence of solid black when making prints (when a book is copied and the original cover is partially opened)

Temperature and humidity in the room when making prints.

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.

Is this graph, the toner consumption for copying in TEXT/PHOTO mode using chart “A” is defined as 100%.

Output pages

140%

24,000 or

5,900 pages

Type of originals

100%

80%

43%

36%

A AB C A

TEXT/PHOTO TEXT PHOTO

ABC

Fig. 3-14

3 - 8

Page 69

6. Transfer Transfer is the process of transferring the toner image (visible image) formed on the drum surface 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.

Drum

Transfer charger

Fig. 3-15

- For smooth transfer

In the transfer bias processing of this equipment, bias voltage (+565 VDC) is applied to the registration roller and transfer unit transport guide to prevent the charge produced by the transfer charger from flowing into the transfer unit transport guide through the paper. Output is controlled as follows to realizes the desirable transfability.

Paper position against transfer point Transfer output

Paper

Leading edge (H) 340 µADC

Center (C) 369 µADC

Trailing edge (L) 282 µADC

Direction of transportation

Drum rotation

Transfer charger

Toner

Fig. 3-16

3 - 9

COPY PROCESS

Page 70

7. Separation Separation is the process of separating paper which is temporarily adhering to the drum due to the static electricity during the transfer process.

Method: Apply negative DC bias to the separation

charger.



The positive charge on the paper is decreased.



The electrostatic adherence force between the

Drum rotation

paper and drum becomes weak.



The paper is separated from the drum by its own stiffness.

Separation charger

Direction of transportation

Fig. 3-17

- Output is controlled as follows to realizes the desirable separability.

Paper position against transfer point Separation output

Leading adge -107 µADC

Middle (leading edge side) -70 µADC

Middle (trailing edge side) -107 µADC

Trailing edge -70 µADC

Paper may not be separated from the drum surface because of moisture or malfunction of the transfer/separation charger during printing. As the result, the paper enters into the cleaner and causes jamming. To prevent this, a separation finger is used to forcibly separate the paper which was left around the drum.

Separation finger

Paper movement

Separation

Drum rotation

Fig. 3-18

charger

3 - 10

Page 71

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 90-100°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

Heater lamp

Paper movement

Paper

Fig. 3-19

Fig. 3-20

Pressure

(

Pressure

Pressure roller

)

9. Cleaning Cleaning is the process of removing the residual 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.

Recovery blade

Cleaning blade

Drum rotation

Fig. 3-21

3 - 11

COPY PROCESS

Page 72

10.Discharging Discharging is the process of eliminating the negative charge remaining on the photoconductive drum before the next charging process. If the residual charge is not eliminated, the following phenomenon occurs:

Negative charge remaining on the photoconductive drum surface causes ungiven application of the charge for the next printing.



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 electrically conductive.



All of the negative charge remaining on the photoconductive drum is conducted to the ground.



Preparation for the next printing is completed.

Discharge LED

Photoconductive drum

Ground

Fig. 3-22

3 - 12

Page 73

3.3 Comparison with e-STUDIO165/205

Process e-STUDIO165/205 e-STUDIO181/211

1. Photoconductive drum

• Sensitivity

• Surface potential

2. Charging

• Grid voltage

3. Data writing

•Light source

• Light amount

4. Development

• Magnetic roller

• Auto-toner

• Toner supply

• Toner-empty detection

• Toner

• Developer material

• Developer bias

5. Transfer

• Transfer bias

6. Separation Adjustable output

7. Discharge

• Discharging position

• Discharge LED

8. Cleaning

• Method

• Recovered toner

9. Fusing

• Method

• Cleaning

•Heater

OD-1600 (OPC ø30) Highly sensitized/durable drum

-440 V

Scorotron method

-448 V

Semiconductor laser (Adjustment not required)

4.0 nJ/mm

One magnetic roller Magnetic bridge-circuit method Toner cartridge Density detection method T-1640, T-1640E, T-1640D T-1640C, T-1640T D-2320, D-2320C DC-340 V Adjustable output (during printing) AC 1100 V (Adjustment not required, during printing) No DC+ (positive) output

Adjustable output (Constant current) +565 V (Adjustment not required)

(Constant current)

Exposure after cleaning Red LED

Cleaning blade Reuse (There is the recovered toner supply mechanism.)

Long-life fuser roller method Fuser roller: Thin roller coated with fluoroplastic (ø30) Pressure roller: PFA tube roller (ø25) None Heater lamp Turned ON/OFF by thermistor

  

 



   

T-1810, T-1810E, T-1810D T-1810C, T-1810T, T-1810A

  

 



 

   

3 - 13

COPY PROCESS

Page 74

3 - 14

Page 75

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 - 1

GENERAL OPERATION

Page 76

4.2 Description of Operation

4.2.1 Warming-up

1. Initialization Power ON

→ Heater lamp ON → Set number “0” reproduction ratio “100%” are displayed (LED “START” OFF) → Fan motors ON → Initialization of scanning system

- The CIS unit moves to the home position.

- The CIS unit moves to the peak detection position.

- The LED of CIS is turned ON.

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

- The LED of CIS is turned OFF.

- The CIS unit moves to the home position. → Ready state (LED “START” ON)

2. Pre-running operation (Only when the temperature is at 16 °C or less) The pre-running operation is started when the temperature of the fuser roller surface reaches a certain temperature. → The main motor is turned ON.

- Fuser roller rotated

- Drum rotated → Pre-running operation stops after 15 seconds.

3. When the surface temperature of the fuser roller becomes sufficient for fusing, → Ready state (LED “START” ON)

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” is displayed. Equipment returns to the normal ready state.

4 - 2

Page 77

4.2.3 Drawer feed copying

1. Press the [START] button

→LED “START” ON → OFF → CIS LED ON → Scan motor ON → CIS unit move forward → Polygonal motor rotates in high speed → Main 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. Pickup solenoid ON.

- Pickup roller start to rotate.

→ Pickup solenoid OFF after a certain period of time → Paper reaches the registration roller.

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

3. After the scanning 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 → Copy counter operates

5. Completion of scanning

→ Scan motor OFF → CIS LED OFF → Registration clutch OFF (after the trailing edge of the paper passed the registration roller) → Ready state

6. Paper exit

→ Exit sensor detects the trailing edge of the paper → Main charger, developer bias and discharge LED OFF → Polygonal motor and main motor OFF → Drum, fuser unit and developer unit stop → Fans return to the ready rotation → LED “START” ON and the equipment enters the ready state

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

Main motor

Registration sensor

Registration clutch

MVDEN signal

Exit sensor

(

Unit : ms

)

1000

2000

4000

4 - 3

5000 6000 7000 8000 90003000

GENERAL OPERATION

Page 78

4.2.4 Bypass feed copying

1. Insert a sheet of paper into the bypass tray. → Bypass paper sensor ON

- Bypass feed priority state

2. Press the [START] button

→ LED “START” ON → OFF → CIS LED ON

→ Scan motor ON  CIS unit move forward → Polygonal motor rotates in high speed

→ Main 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 pickup solenoid ON

- The bypass pickup roller start to rotate.

- The bypass pickup roller is lowered.

- The bypass feed roller start to rotate.

→ Paper reaches the registration roller → Aligning operation → After a certain period of time, the bypass pickup solenoid OFF

4. Hereafter, the operation 3) through 6) of  P.4-3 "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. CIS unit return to appropriate positions. → Automatic density and reproduction ratio 100% are set (The set number remains the same)

2. Select the desired copy condition

3. After the interruption copying is finished:

→ LED “INTERRUPT” OFF by pressing the [INTERRUPT] button → Equipment returns to the status before the interruption

4. Press the [START] button → The copying operation before the interruption is resumed.

4 - 4

Page 79

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

1. Abnormality cleared without turning OFF the door switch (A) Add paper (B) Pick-up failure in bypass

2. Abnormality not cleared without turning OFF the door switch (C) Misfeed in equipment (D) Replace the toner cartridge (E) Developer unit not installed properly

3. Abnormality not cleared without turning OFF the main switch (F) Call for service

4 - 5

GENERAL OPERATION

Page 80

4.3.2 Description of abnormality

(A) Add paper

• Drawer empty sensor detects the presence or absence of paper.

[When drawer is not installed] No drawer detected



LED “Add paper” ON



[START] button disabled

[When drawer is installed]



Drawer detected



Paper empty sensor OFF



LED “Add paper” ON



[START] button disabled

(B) Pick-up failure in bypass

• During bypass feeding Bypass pickup solenoid ON



Registration sensor is not turned ON in a fixed period of time



Clear paper symbol is displayed: E12



Copying operation is disabled



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

4 - 6

Page 81

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



Registration clutch ON

Less than the regulation time.



Registration clutch

Exit sensor ON If the exit sensor is not turned ON after the regulation time.



Paper jam (E01)  The copying operation is stopped.

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



Registration clutch OFF

Less than the regulation time.



Registration clutch

Exit sensor OFF If the exit sensor is not turned OFF after the regulation time.



Paper jam (E02)  The copying operation is stopped.

Exit sensor

Timer

Exit sensor

Timer

Fig. 4-1

Fig. 4-2

Regulation time

Paper jam (E01)

OFF

Paper jam (E02)

Regulation time

• Immediately after the power ON



Any of all sensors on paper transport path detects paper (ON)



Paper jam (E03)

• Front cover is opened during copying



Paper jam (E41)

• Registration sensor detects jamming of the leading edge of paper: Registration sensor is not turned ON in a fixed period of time after the feeding starts.



Paper jam (E12, E13 and E21: Error code differs depending on the paper source.) Refer to the error code table in Service Handbook.

4 - 7

GENERAL OPERATION

Page 82

• The PFU paper feed sensor is not turned ON in a fixed period of time after the pickup solenoid is turned ON



Paper jam (E14)

(D) Replace the toner cartridge

• Toner density becomes low



Auto-toner sensor detects the absence of the toner



Control circuit  The toner lamp brinks: the copying operation disabled

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

Toner is supplied  copying operation enabled.

(E) Developer unit not installed properly

• Disconnection of the connectors of the developer unit



The equipment enters the following state: The toner lamp brinks, the start lamp is turned OFF and all buttons disabled.



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

(F) Call for service

Error code is displayed instead of the set number by pressing the [CLEAR] button and [8] button simultaneously when the service call lamp is blinking. Refer to the error code table in the Service Handbook.

4 - 8

Page 83

5. CONTROL PANEL

5.1 Control Panel and LED Display

The control panel consists of button switches to operate the equipment and select various modes, and LEDs to display codes, values and the states (including each mode) of the equipment. The button switches and the LEDs are mounted on the control panel PC board (LPNL) and are installed the inside of the control panel.

Fig. 5-1

5 - 1

CONTROL PANEL

Page 84

5.2 Items Displayed on Control Panel

The following items are displayed in the 7-segment LED at the center of the control panel:

1. Copy quantity The number of copies set (= copy quantities) is displayed in the normal state.

2. Reproduction ratio The display switches from the copy quantities to the reproduction ratio of a job by pressing [%] button. When the [25%] and [100%] buttons are pressed simultaneously, the reproduction ratio is instantly set at 25%. When the [200%] and [100%] buttons are pressed simultaneously, the reproduction ratio is instantly set at 200%.

3. Total counter The total counter value is displayed by pressing the [#] button more than 2 seconds. The total 8 digits can be displayed; the first 2 digits of the value are displayed at first, then the next 3 digits, and then the last 3 digits are displayed in order. e.g.) 12345678: 12345678 When the [25%] button is pressed, the digits shift to the 3 digits of next higher order. When the [200%] button is pressed, they shift to the 3 digits of next lower order.

4. ROM version A ROM version is displayed by pressing the [*] key, the [#] key and the [START] button simultaneously. The total 8 digits can be displayed; the first 2 digits of the ROM version are displayed at first, then the next 3 digits, and then the last 3 digits are displayed in order. e.g.) 12345678: 12345678 When the [25%] button is pressed, the digits shift to the 3 digits of next higher order. When the [200%] button is pressed, they shift to the 3 digits of next lower order.

5. Error code When a paper jam or a service call has occurred, its error code is displayed in 3 digits by pressing the [CLEAR/STOP] button and the [8] key simultaneously.

6. Auto Power Save Mode / Auto Shut Off Mode “ALP” (Auto Low Power) is displayed during the Auto Power Save Mode, and “SLP” (Sleep) is displayed during the Auto Shut Off Mode.

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Page 85

7. Setting mode When the equipment is in each setting mode, “Fnc” is displayed in the 7-segment LED.

• Paper size setting mode The size of the copy paper in the drawer is set in this mode. The equipment enters into the paper size setting mode by pressing the [COPY] and [DRAWER] buttons simultaneously more than 2 seconds. Press the [DRAWER] button to select the drawer. Then press the [COPY] button to select the paper size, and then press the [START] button to perform the setting. When the setting needs to be canceled halfway, press the [FUNCTION CLEAR] button.

When a size other than the ones indicated on the control panel needs to be set, press the [DRAWER] button to select the drawer, and then press the [COPY] button to select “OTHER”, and then key in a code for the desired size as shown below. Then press the [START] button to perform the setting. When the setting needs to be canceled halfway, press the [FUNCTION CLEAR] button.

Paper size Code Paper size Code

A3 01 LT-R 11

A4 02 ST-R 12

A4-R 03 FOLIO 13

B4 04 COMPUTER 14

B5 05

B5-R 06 13”LG 16

A5-R

LD 08

LG 09

LT 1 0

Postcard *

16K

16K-R

*1 *2: These codes can be set only when the bypass tray is used. *2: This code can be set only for JPD models. *3: These codes can be set only for CND models.

• Operation sound setting mode The operation (beep) sound of this equipment is set on or off in this mode. When the density adjustment button “light” and “dark” are pressed simultaneously more than 2 seconds, the equipment enters into the operation sound setting mode. The on or off of this operation sound is switched by pressing the [AUTO] button. When the sound is on, all of the 7 density adjustment lamps are turned on. When the sound is off, all of these lamps are turned off. When the on or off of the sound has been switched, press the [START] button to perform the setting. When the setting needs to be canceled halfway, press the [FUNCTION CLEAR] button.

5 - 3

CONTROL PANEL

Page 86

5.3 Relation between Equipment State and Operation

[START] [CLEAR/

STOP]

Waiting Starts copying Clears copy

quantity

Warming up Reserves

auto start job

Clears copy quantity

Copying --- Pauses copy

job

[FUNCTION

[INTERRUPT] [ENERGY

CLEAR]

Clears each setting

Enters into interrupting copy

Clears each

--- --- Operation

setting

--- Enters into interrupting

Other

SAVER]

Enters into energy saving

buttons/ keys

Operation acceptable

mode

acceptable

--- ---

copy

Pausing copy job

Resumes copy job

Cancels copy job

Clears each setting

Enters into interrupting

--- ---

copy

Downloading

--- --- --- --- --- ---

firmware

In energy saving (low

--- --- --- --- Enters into waiting state

---

power) mode

In sleep mode Enters into

waiting state

Interrupting copy job

Starts interrupting copy

Cover open --- Clears copy

Enters into waiting state

Clears copy quantity

quantity

Enters into waiting state

Cancels interrupting copy

Clears each setting

Enters into waiting state

Cancels interrupting

--- Enters into

waiting state

--- Operation

acceptable

copy

--- --- Operation acceptable

Toner empty --- --- --- --- --- Operation

acceptable

Paper jam --- --- --- --- --- ---

Service call --- --- --- --- --- ---

5 - 4

Page 87

5.4 Operation

5.4.1 Block diagram

The control panel is controlled by the serial data input/output to the SoC on the MAIN board. The input status of each button is output to the SoC as serial data by the parallel-serial conversion IC and detected. Each LED is controlled to be lit by the LED driver based on the information of the serial data output from the SoC.

5.4.2 LED display circuit

<Example> Lighting circuit method of “Cover open lamp”

+5V

LEDM12

Low

Cover open lamp

(LED22)

Low

Fig. 5-2

Current

FET (Q2) is turned ON when the FET control signal (C0) becomes “L” level. Then when the control signal (LEDM12) of the LED driver changes to “L” level, the current flows to the cover open lamp (LED22) to turn ON the LED.

Conditions to turn ON the LED

The LED is turned ON only when the two conditions below are met.

1. The FET connected to the LED anode is ON.

2. The cathode side of the LED is “L” level.

5 - 5

CONTROL PANEL

Page 88

5.5 Disassembly and Replacement

5.5.1 Control panel unit

(1) Remove 3 screws.

(2) Take off the control panel unit while lifting it

up.

(3) Disconnect 1 connector.

Note:

When installing the control panel unit, be sure not to have the harness being caught by the front right cover and the unit.

Fig. 5-3

Connector

5.5.2 Control panel PC board (LPNL)

(1) Take off the control panel unit.

 P.5-6 "5.5.1 Control panel unit"

(2) Remove 2 screws and take off the cover

while sliding it.

Control panel unit

Fig. 5-4

Cover

Fig. 5-5

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Page 89

(3) Take off 2 brackets by removing 2 screws

each.

Bracket

(4) Remove 12 screws and take off the control

panel PC board.

Fig. 5-6

Control panel PC board

Fig. 5-7

5 - 7

CONTROL PANEL

Page 90

5 - 8

Page 91

6. SCANNER

6.1 General Description

In the scanning section, this equipment uses a CIS (Contact Image Sensor) for scanning the image. The surface of an original is irradiated with light from the LED array mounted on the CIS unit and the reflected light is scanned by the CCD where the optical image data are converted into an analog electrical signal, and then transmitted to the MAIN board. After the binarization and the various image processing operations necessary for image formation are performed on the MAIN board, the data are transmitted to the writing section.

Original glass

ADF original glass

CIS home position sensor

CIS unit

Scan motor

Damp heater

Fig. 6-1

6 - 1

SCANNER

Page 92

6.2 Construction

Scanning section

Original glass Original glass

ADF Original glass

CIS unit (CIS) CCD

YG-LED array

RGB-light guiding tube

Micro-lens array

Drive section Scan motor (M1)

CIS home position sensor (S1)

Others Damp heater (DH1, DH2)

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Page 93

6.3 Functions

1. Original glass This is a glass for placing original. Original (image) placed on the original glass is scanned by the CIS. The ADF original glass is used when original is read with the Automatic Document Feeder. Original is transported on the ADF original glass by the Automatic Document Feeder, and the transported original is read under the ADF original glass by the CIS. Do not use such solvents as alcohol when cleaning the surface of the ADF original glass, because it is coated so as not to be scratched by originals.

2. CIS unit (CIS) The CIS unit (CIS) is a sensor unit which consists of an LED array, lens array and CCD array of the same length as that of the original width in the primary scanning direction closely attached and unified. The original is irradiated at one time with the LED light source which consists of LEDs of RGB colors (one for each color), light guiding tube to lead each light to the original and a YG-LED array, and then the reflected light is scanned by the CCD. In the CCD method (reduction optical method), the reflected light of the exposure lamp is LED through mirrors, lens and slit to the CCD where the optical-to-electrical conversion for scanned data is performed. In contrast, in the CIS method (close-contact sensor method), those operations are processed only by the CIS unit. The CIS has characteristics of shallow depth of focus and high lightsensitivity.

Micro-lens array

ADF original glass

Shading correction plate

CIS unit

RGB light guiding tubeYG-LED array CCD

Fig. 6-2

Original glass

-CCD

Scans the light reflected from an original and converts it to an electrical signal. In order to realize the same-to-scale optical system of A3 width and 7084 image pixels, the equipment uses 11 CCDs (each CCD has 644 image pixels per line) to make up a CIS sensor of 600x600 dpi resolution for scanning.

- YG-LED array

Works as an assistant light for the RGB light guiding tube. This YG-LED array is used to reduce the shadow of the original when scanning is performed. This LED array produces the output power of 7.68W.

6 - 3

SCANNER

Page 94

- RGB light guiding tube

A light from the LED array mounted on the CIS unit (CIS) goes through the original glass and lights the original. Then, the reflected light from the original is scanned by the CCD. By adjusting each amount of R, B and YG-LED light with reference to the amount of G-LED light, it is possible to attain a light color which has nearly the same color effect as that of the YG xenon light for the light sensitivity of the CCD. This LED array produces the output power of 0.125W X 3.

3. Scan motor (M1) This is a two-phase stepping motor which drives the CIS unit (CIS). The rotation of the motor is transmitted to the CIS unit through the timing belt to move the unit in the secondary scanning direction.

4. CIS home position sensor (S1) This sensor detects if the CIS unit is at its home position.

6 - 4

Page 95

6.4 Description of Operation

6.4.1 Scanning operation

• Scanning an original on the original glass The rotation of the scan motor (M1) is transmitted to the CIS unit through the timing belt to move the unit to the home position. The home position is detected when the actuator installed on the CIS case passes the CIS home position sensor (S1).

When the [START] button is pressed, the CIS unit starts scanning the original.

• Scanning an original on the ADF The CIS unit (CIS) stops and stays at the shading position during the shading correction, and at the scanning position during the scanning operation.

6 - 5

SCANNER

Page 96

6.4.2 Scan motor drive circuit

The scan motor (M1) is a 2-phase stepping motor and is driven by the motor driver (IC2).

+24V+5V

VDD

+5V

ASIC

IC23

SoC

GND

Excitation mode setting-2 (Fixed at "H")

SCNMD0: Excitation mode Setting-1

SCANRST: Resetting

SCNDIR: Motor rotation direction setting

SCNEN: Cutting off of the drive output

SCNCLK: Clock input

VSS

MODE2

MODE1

RESETB

CWB

ENABLE

CLOCK

IC53

MAIN board

SCNMVR: Voltage to set value for the motor current

GND

Fig. 6-3

VREF

PG1

PG2

Driver IC

IC2

6 - 6

Page 97

Description of input signal

Clock input SCNCLK Input The scan motor is rotated by inputting the pulses (CLK).

* Internal circuit of the motor driver works when the first

pulse of the input becomes ON.

* The maximum input clock is 9000 PPS.

Motor rotation direction setting SCNDIR Input The direction of the motor rotation is determined by setting

the level of the signal. “H”: Clockwise direction “L”: Counterclockwise direction * The rotation direction within 7 µsec. before the first

pulse of the CLK comes should not be changed ON and after the last pulse goes OFF.

Cutting off of the drive output SCNEN Input Forcibly turn ON/OFF the excitation drive.

“H”: Normal operation (Excited) “L”: Excitation drive is forcibly shut off (Not excited)

Excitation mode Setting-1 SCNMD0 Input Sets the excitation mode.

Resetting SCANRST Input Resets the whole system.

Voltage to set value for the

SCNNVR Input Sets the reference current value for the constant current

motor current

* The setting should not be changed within 7µsec. after

the first pulse of the CLK comes ON.

“L” (10 µsec. or more): Internal circuit of the driver is initialized. * The motor drive circuit is automatically reset when the

power is turned ON.

detection. Motor wire current value can be set in the range of 0 to 2.0 (A)/phase by applying the analog voltage of 0 to 5 (V).

6 - 7

SCANNER

Page 98

6.5 Contact Image Sensor Unit Control Circuit

6.5.1 Exposure LED control circuit

The cell guide mounted on the contact image sensor (CIS) unit is the main light source of the red/green/ blue LEDs and is used to expose originals. Also mounted is the LED array which is the subsidiary light source of the yellow-green LEDs. Turning each light source ON/OFF is controlled by the control signal (SCNLEDR/G/B/ASTOFF-1) output from the ASIC on the MAIN board. According to the amount of each light source, white standard generation is performed (reading the reflected light amount of the white shading correction plate). Black standard generation is also performed (reading the light amount when the light source is turned off), and according to the result, adjustment by the light amount adjustment signal (SCNLEDVR1/2/3-1) output through the D/A converter from the SoC is made. However, the light amount of the green light source is not changed because it is the standard value of the adjustment. The other light amount is changed based on the green light source; in this way the total light amount is adjusted.

SoC

ASIC

Serial data

SCNLEDROFF-1

SCNLEDGOFF-1

SCNLEDBOFF-1

SCNLEDASTOFF-1

D/A

converter

SCNLEDVR3-1

SCNLEDVR1-1

SCNLEDVR2-1

+5V

+24V

+4V

Contact image sensor unitMAIN board

Red Green Blue Yellow-Green

Fig. 6-4

6 - 8

Page 99

6.5.2 CCD control circuit

On the contact image sensor (CIS) unit, CCD (Charge Coupled Device) are mounted as the optoelectronic element for converting the light reflected on the original into electrical signals (analog signals). CCD is driven by the clock signals output from the SoC on the MAIN board, and then it divides the photoelectric-converted analog signals into four output signals and outputs to the AFE. The AFE converts the analog signals into 8-bit digital signals and outputs to the SoC.

Optoelectronic conversion

The CCD of the contact image sensor (CIS) unit in this equipment performs photoelectronic conversion and charge transfer by a combination of its shift register and photodiodes (light-receiving sensors) to output signals for a primary scanning direction. Each light-receiving sensor photoelectonically converts the received light into charge and transfers this to each shift register. These shift registers then transfer the charge in the direction of the arrows in the figure at the timing of the transfer clocking. This transfer clock pulse is equally input into every chip, and thus all the shift registers are driven at the same timing. The charge transferred into each chip is then combined into each channel, and then output in a time division system. Furthermore, the 4 channels simultaneously perform this process to output the scanning signals of multiple systems in parallel.

Shading correction

A variation is caused by the following factors in the CCD output.

1. The light source has a variation in its light distribution.

2. Each element varies in photoelectronic conversion efficiency.

These differences need to be corrected and this correction is referred to as a shading correction. The shading correction is performed by applying a normalization process using the following formula on the black data and the white data obtained in advance to correct the lighting variance and element variation of the image data.

(S-K)

(W-K)

I = k

k: Coefficient S: Image data before correction K: Black data (stored in "Black" memory) W: White data (stored in "White" memory)

6 - 9

SCANNER

Page 100

6.6 Disassembly and Replacement

6.6.1 Original glass

(1) Remove 2 rubber caps, 2 screws, and take

off the original glass holder while sliding it to the right.

Note:

The rubber caps are not installed in the equipment for NAD, CND, AUD, TWD, KRD and ARD.

(2) Remove 2 rubber caps, 2 screws, and take

off the original glass.

Notes:

1. When handling the original glass, take care not to contaminate the surface with fingerprints or such.

2. Do not place the original glass directly on the floor.

3. When installing the original glass, fit 2 guides of the original glass in the groove of the scanner top cover.

4. The rubber caps are not installed in the equipment for NAD, CND, AUD, TWD, KRD and ARD.

Rubber cap

Original glass holder

Fig. 6-5

Original glassRubber cap

Fig. 6-6

(3) Take off the ADF original glass.

ADF Original glass

Fig. 6-7

6 - 10

Toshiba e-STUDIO 181, e-STUDIO 211 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

2.2.1 Scanner, control panel

2.2.2 Power supply section, switches

2.2.3 Laser optical unit, fuser unit, toner cartridge section

2.2.4 Developer unit section

2.2.5 Driving section

2.2.6 Drawer section

2.2.7 Bypass unit

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 Disassembly and Replacement of Covers

2.5.1 Front cover

2.5.2 Inner tray

2.5.3 Left cover

2.5.4 Tray rear cover

2.5.5 Front right cover

2.5.6 Front upper cover

2.5.7 ADU cover

2.5.8 Right front cover

2.5.9 Right rear cover

2.5.10 Rear cover

2.6 Disassembly and Replacement of PC boards

2.6.1 MAIN board (MAIN)

2.6.2 SRAM board (SRAM)

2.6.3 Fuse PC board (FUS)

2.6.4 Switching regulator unit (PS)

2.6.5 Switching regulator cooling fan (M6)

2.7 Removal and Installation of Options

2.7.1 MR-2020 (Automatic Document Feeder (ADF))/MR-3023 (Reversing Automatic Document Feeder (RADF))

2.7.2 MY-1027 (Paper Feed Unit (PFU))

3. COPY PROCESS

3.1 General Description of Copying Process

3.2 Details of Copying Process

3.3 Comparison with e-STUDIO165/205

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

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

5. CONTROL PANEL

5.1 Control Panel and LED Display

5.2 Items Displayed on Control Panel

5.3 Relation between Equipment State and Operation

5.4 Operation

5.4.1 Block diagram

5.4.2 LED display circuit

5.5 Disassembly and Replacement

5.5.1 Control panel unit

5.5.2 Control panel PC board (LPNL)

6. SCANNER

6.1 General Description

6.2 Construction

6.3 Functions

6.4 Description of Operation

6.4.1 Scanning operation

6.4.2 Scan motor drive circuit

6.5 Contact Image Sensor Unit Control Circuit

6.5.1 Exposure LED control circuit

6.5.2 CCD control circuit