TOSHIBA e-STUDIO350, e-STUDIO450 Service Manual

MULTIFUNCTIONAL DIGITAL SYSTEMS

e-STUDIO350/450

File No. SME03002800 R03092140700-TTEC Ver00 2003-11

GENERAL PRECAUTIONS REGARDING THE INSTALLATION

AND SERVICE FOR e-STUDIO350/450

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

1. Transportation / Installation

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

tions as indicated below.

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

attention when handling it.

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

transporting the equipment.

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

/ 8A for its power source.

• The equipment must be grounded for safety.

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

• Select a suitable place for installation.

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

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

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

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

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

2. Service of Machines

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

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

damp heater and their periphery.

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

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

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

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

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

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

underneath.

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

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

• Use suitable measuring instruments and tools.

• Avoid exposure to laser radiation during servicing.

- Avoid direct exposure to the beam.

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

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

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

A fire may occur when dust lies on this area.

3. Main Service Parts for Safety

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

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

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

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

by Toshiba TEC Corporation.

4. Cautionary Labels

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

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

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

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

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

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

regulations or rules.

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

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

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

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

8. Precautions Against Static Electricity

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

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

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

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

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

to this manual.

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

selon ce manuel.

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

der Lithium-Batterie) nach diesem Handbuch.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

1. SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES

1.1 Specifications

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

e-STUDIO450.

• Copy process Indirect electrophotographic process (dry)

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

ity feeder (LCF) are installed)

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

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

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

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

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

Maximum size : A3/LD

• Copy speed (Copies/min.)

e-STUDIO350

Paper supply

Paper size

A4, LT, B5

A4-R, B5-R,

A5-R, LT-R, ST-R

B4, LG

A3, LD

Drawer

Size specified

Bypass feed

Size not specified

PFP

LCF

–

e-STUDIO450

Paper supply

Paper size

A4, LT, B5

A4-R, B5-R,

A5-R, LT-R, ST-R

B4, LG

A3, LD

“–” means “Not acceptable”.

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

Drawer

Size specified

Bypass feed

Size not specified

PFP

LCF

–

multiple copying.

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

following conditions:

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

• Number of sheets: 35[45] or more.

• Paper feeding: LCF

• Reproduction ratio: 100%

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

* System copy speed

Copy mode

Single-sided originals

↓

Single-sided copies

Single-sided originals

↓

Double-sided copies

Double-sided originals

↓

Double-sided copies

Double-sided originals

↓

Single-sided copies

• Copy paper

1 set

3 sets

5 sets

1 set

3 sets

5 sets

1 set

3 sets

5 sets

1 set

3 sets

5 sets

Sec.

e-STUDIO350

20.85

57.95

91.20

27.42

62.18

97.55

55.47

126.21

196.93

48.22

117.44

184.96

e-STUDIO450

17.49

46.68

73.50

25.71

57.41

89.03

54.68

118.07

181.36

48.20

102.18

155.06

The system copy speed, including

scanning time, is available when 10

sheets of A4/LT size original are

set on RADF and one of the copy

modes in the left table is selected.

The period of time from pressing

[START] to the paper exit com-

pletely out of the equipment based

on the actually measured value.

Upper drawer is selected and

copying is at the non-sort mode.

Automatic copy density, APS/AMS

are turned off.

Finisher is not installed.

Drawer ADU PFP LCF Bypass copy Remarks

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

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

specified sizes can be set.)

Weight

64 to 105 g/m

17 to 28 lb.

Special Tracing paper, labels,

paper – OHP film (thickness: 80 µm

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

e-STUDIO450: Approx. 3.9sec. or less

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

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

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

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

Zooming: 25 to 400% in increments of 1%

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

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

(Continuous feeding)

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

(Single paper feeding)

or thicker)

(25 to 200% when using RADF)

These special papers recommended by Toshiba Tec

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

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

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

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

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

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

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

22 lb.))

PFP–Option (One drawer or two : stack height

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

(17 to 22 lb.))

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

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

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

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

• Capacity of originals in the reversing automatic document feeder (Option)

................. A3 to A5-R, LD to ST-R : 100 sheets / 80 g/m2 (Stack height 16mm or less)

• Automatic duplexing unit ... Stackless, Switchback type

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

Toner cartridge replacing method

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

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

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

220-240V (±10%) or 240V (±10%) / 8A

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

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

through the equipment.

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

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

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

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

Fig. 1-101

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

1.2 Accessories

Unpacking/setup instruction 1 set

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

Operator's manual pocket 1 pc.

Power cable 1 pc.

Warranty sheet 1 pc. (for NAD)

Setup report 1 set (for NAD and MJD)

Customer satisfaction card 1 pc. (for MJD)

PM sticker 1 pc. (for MJD)

Drum (installed inside of the equipment) 1 pc.

Toner bag 1 pc.

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

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

Operation panel stopper 1 pc.

Blind seal 4 pcs.

Rubber plug 4 pcs.

CD-ROM 5 pcs.

* Machine version

NAD: North America

MJD: Europe

AUD: Australia

ASD: Asia

TWD: Taiwan

SAD: Saudi Arabia

JPD: Japan

CND: China

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

1.3 Options

Platen Cover KA-3511 PC/PC-C

Reversing Automatic Document Feeder (RADF) MR-3015

Drawer Module MY-1021 /-C

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

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

Finisher (Hanging type) MJ-1022 /-C

Finisher (Console type) MJ-1023 /-C

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

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

Staple Cartridge STAPLE-1600 (for MJ-1022)

STAPLE-2000 (for MJ-1023/1024)

STAPLE-600 (for MJ-1024)

Bridge Kit KN-3520 /-C

Job Separator MJ-5004 /-C

Offset Tray MJ-5005 /-C

Key Counter MU-8, MU-10

Work Tray KK-3511

Damp Heater MF-3520 U/E

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

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

Wireless LAN Adapter GN-1010

PCI Slot GO-1030

Scrambler Board GP-1030

Printer Kit GM-1010

Printer/Scanner Kit GM-2010

Scanner upgrade Kit GM-3010

Desk MH-1700

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

Notes:

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

1024).

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

6004N/E/F/S).

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

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

1.4 Supplies

Drum OD-3500

Toner bag PS-TB3520 /E/N *2

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

Developer D-3500

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

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

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

1.5 System List

KA-3511

Platen Cover

)

RADF

(

MR-3015

Document Feeder

Reversing Automatic

KK-3511

Work Tray

Key Counter

MU-8, MU-10

KN-3520

Bridge Kit

Damp Heater

MF-3520 U/E

MJ-5004

Job Separator

GM-1010

Printer Kit

MJ-5005

Offset Tray

Printer/

GM-2010

Scanner Kit

Scanner

GM-3010

Upgrade Kit

Adapter

GN-1010

Wireless LAN

PCI Slot

GO-1030

GD-1160

FAX Board

2nd Line for

NA/EU/TW/C

Desk

MH-1700

Feeder (LCF)

Large Capacity

KD-1012 A4/LT

KD-1011

Paper Feed

Pedestal (PFP)

MY-1021

Drawer Module

Board

GP-1030

Scrambler

Hole Punch Unit

MJ-6004 N/E/F/S

)

Finisher

MJ-1022

Hanging type

(

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

STAPLE-1600

Staple Cartridge

STAPLE-2000

Staple Cartridge

)

Finisher

Console type

(

Fig. 1-501

MJ-1023

GD-1150

TW/C/AS

FAX Board

NA/AU/EU/

Finisher

stitcher type)

Console saddle

(

MJ-1024

STAPLE-600

Staple Cartridge

2. OUTLINE OF THE MACHINE

2.1 Sectional View

70 71

11 72

53 22

678

46 47

56,59 57 58

20,21

61 6263 64

27 28

52 41 31

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

3334

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

4950

20,21

Fig. 2-101

Original glass

ADF original glass

Mirror-1

Mirror-2

Mirror-3

Reflector

Lens

Exposure lamp

Automatic original detection sensor

Toner cartridge switch

Laser unit

Laser unit cooling fan

Drawer pickup roller

Drawer feed roller

Drawer separation roller

Drawer transport roller

Drawer

Drawer tray

Drawer tray-up sensor

Drawer empty sensor

Drawer paper stock sensor

Drawer damp heater (JPD only)

Registration roller

Registration sensor

Upper drawer feed sensor

Lower drawer feed sensor

Exit sensor

ADU upper transport roller

ADU middle transport roller

ADU lower transport roller

ADU entrance sensor

ADU exit sensor

Bypass pickup roller

Bypass feed roller

Bypass separation roller

Bypass tray

Bypass paper sensor

Bypass feed sensor

Temperature/humidity sensor

Transfer charger

Separation charger

Drum

Developer unit

Cleaning blade

Recovery blade

Main charger

Discharge LED

Drum thermistor

Drum damp heater thermostat

Drum damp heater

Separation finger for drum

Toner bag full detection sensor-2

Auto-toner sensor

Toner recovery auger

Developer sleeve (magnetic roller)

Heat roller

Pressure roller

Cleaning roller

IH coil

Main thermistor / Edge thermistor

Separation finger for heat roller

Separation finger for pressure roller

Exit roller

Fuser thermostat

Middle fan

Exhaust fan

Sub-separation fan

Power supply cooling fan

Main switch

Front cover opening/closing switch

Cover opening/closing interlock switch

Polygonal motor

11 10

24 26

Fig. 2-102

27 26

Platen sensor

Scan motor

Carriage home position sensor

Scanner damp heater (Left)

Scanner damp heater (Right)

Scanner damp heater thermostat

IH board cooling fan

Developer unit cooling fan-1

Toner motor

Developer drive clutch

Main motor

Exit motor

Toner bag full detection sensor-1

ADU opening/closing switch

Fuser unit cooling fan

Registration clutch

ADU motor

ADU clutch

Bypass pickup solenoid

Bypass feed clutch

Side cover opening/closing switch

Transport clutch (High speed)

Transport clutch (Low speed)

Lower drawer feed clutch

Tray-up motor

Drawer detection switch

Upper drawer feed clutch

Developer unit cooling fan-2

2.2 Electric Parts Layout

[A] Unit construction

Drive unit

PC board unit

Scanner unit

Control panel unit

Fuser unit

Automatic duplexing unit

Bypass unit

Transport unit

Process unit

Laser unit

Paper feeder unit

Fig. 2-201

Front side

[B] Scanner unit

(B-1) Motor, sensor, lamp

A4 series

LT series

EXP

Fig. 2-202-1

Front side

EXP

Fig. 2-202-2

Front side

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

THMO2*

DH1*

INV

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

NAD/MJD models : Option

DH2*

CCD

SLG

Front side

Fig. 2-203

[C] Control panel unit

DSP

KEY

LCD

Front side

Fig. 2-204

[D] Process unit

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

LRL

S32

S31

S30

Fig. 2-205

S12

S10

Front side

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

THMO3*

M16

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

NAD/MJD models : Option

ERS

THM3

S11

DH3*

Front side

Fig. 2-206

[E] Laser unit

SNS

[F] Paper feeder unit

S23

S21

S22

S20

Fig. 2-207

CLT1

LDR

Front side

CLT2

S16

S18

S17

S19

Front side

Fig. 2-208

[G] Transport unit

S13

S14

S33

M10

M11

S15

[H] Bypass unit

Front side

Fig. 2-209

SFB

CLT3

SOL1

S24

S25

Fig. 2-210

Front side

[I] Automatic duplexing unit

S26

ADU

S27

[J] Fuser unit

S28

CLT4

Front side

Fig. 2-211

THMO1

S29

M12

IH-COIL

THM1

THM2

Front side

Fig. 2-212

[K] Drive unit

M13

M15

CLT5

M14

CLT6

CLT7

CLT8

HVT

Front side

Fig. 2-213

[L] PC board unit

LGC

SYS

HDD

NIC

FIL or FUS*

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

ASD/AUD/CND models : FUS (Standard)

MJD model : FUS (Option)

BRK

Front side

Fig. 2-214

2.3 Symbols and Functions of Various Components

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

(1) Motors

Symbol

M10

M11

M12

M13

M14

M15

M16

Name

SCAN-MOT

Scan motor

M/DC-POL

Polygonal motor

ADU-MOT

ADU motor

EXIT-MOT

Exit motor

MAIN-MOT

Main motor

TRY-MOT

Tray-up motor

TNR-MOT

Toner motor

LSU-FAN-MOT

Laser unit cooling fan

MID-FAN-MOT

Middle fan

EXIT-FAN-MOT

Exhaust fan

SP-FAN-MOT

Sub-separation fan

FUS-FAN-MOT

Fuser unit cooling fan

IH-FAN-MOT

IH board cooling fan

DEV-FAN-MOT1

Developer unit cooling fan-1

DEV-FAN-MOT2

Developer unit cooling fan-2

PS-FAN-MOT

Power supply cooling fan

Function

Driving the carriages

Driving the polygonal mirror

Driving the automatic duplexing unit

Driving the exit roller

Driving the drum, developer unit, fuser

unit, registration roller, transport

rollers, feed rollers and pickup rollers

Driving the lifting movement of trays in

upper/lower drawer

Supplying the toner

Cooling down the laser unit

Cooling down the inside of the

equipment

Exhausting ozone

Assisting the paper separation process

(Absorbing the paper from the drum)

Cooling down the fuser unit

Cooling down the IH board

Cooling down the developer unit

Cooling down the power supply unit

Remarks

B-1

D-1

D-2

P- I

P13 - I8

P9 - I5

P32 - I18

P6 - I20

P12 - I26

P4 - I26

P28 - I9

P9 - I3

P11 - I2

P30 - I13

P7 - I12

P6 - I18

P6 - I39

P9 - I7

+ 256 hidden pages