Toshiba DP8110, DP-5510, DP6510, 810, 550 Service Manual

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SERVICE MANUAL

DIGITAL PLAIN PAPER COPIER

e-STUDIO550/650/810

(DP-5510/6510/8110)

File No.31100202

2002-06

TOSHIBA TEC CORPORATION

GENERAL PRECAUTIONS REGARDING THE INSTALLATION AND SERVICE FOR THE COPIER e-STUDIO550/650/810

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

1. Transportation/Installation

• When transporting/installing the copier, move it by the casters while lifting the stoppers. The copier is quite heavy and weighs approximately 200 kg (441 lb), therefore pay full attention when handling it.

• Be sure to use a dedicated outlet with AC 115V or 120V/20A (220V, 230V, 240V/10A) or more for its power source.

• The copier 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 copier 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 copier and shall be easily accessible.

2. Service of Machines

• Basically, be sure to tur n 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, high-voltage transformer, exposure lamp control inverter, inverter for the LCD bac klight and pow er supply unit. Especially, the board of these components should not be touched since the electirc charge may remain in the condensers, 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 main switch 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, par ts, etc. that are reflective into the path of the laser beam.

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

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 dir t on their surface and whether they are properly stuck to the copier.

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

• Regarding the recovery and disposal of the copier, supplies , consumable parts, packing materials, used batteries and RAM-ICs including litium batteries, it is recommended to 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 copier and

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

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

ies 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 R A M -ICs (inklusive

der Lithium-Batterie) nach diesem Handbuch.

1. SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES

1. 1 . Specifications

1. 2 . Accessories

1. 3. Options

1. 4. Supplies

1. 5. System List

1. SPECIFICATIONS / A CCESSORIES / OPTIONS / SUPPLIES

1. 1. Specifications

When the specification is different among e-STUDIO550, 650 and 810, the value for e-STUDIO650 is shown by [ ] and the value for e-STUDIO810 is shown by { }.

• Copy process ...............Indirect electrophotographic process (dry system)

• Type ..............................Console type

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

• Acceptable originals .....Sheets, books and 3-dimensional objects

The automatic document feeder only accepts paper (single-sided originals: 50~127g/m2/13~34Ib.Bond, double-sided originals: 50~104g/m2/13~28Ib.Bond) excluding carbon paper , pasted sheet and stapled sheet. Maximum size : A3/LD

• Copy speed

e-STUDIO550 (Copies/min.)

Paper supply Tandem

Paper size Size specified Size not specified

A4, LT, B5

A4-R, B5-R,

A5-R, L T-R, ST-R

B4, LG

A3, LD

T op side discharging Back side discharging T op side discharging Back side discharging T op side discharging Back side discharging T op side discharging Back side discharging

Cassette

55 55 48 33 55 55 48 30 44 — 42 33 42 — 42 30 39 — 37 33 35 — 35 30 34 — 33 33 30 — 30 30

LCF

Bypass feeding

e-STUDIO650

Paper supply Tandem

Paper size Size specified Size not specified

A4, LT, B5

A4-R, B5-R,

A5-R, L T-R, ST-R

B4, LG

A3, LD

JUNE 2002 © TOSHIBA TEC 1 - 1 e-STUDIO550/650/810 SPECIFICATIONS

T op side discharging Back side discharging T op side discharging Back side discharging T op side discharging Back side discharging T op side discharging Back side discharging

Cassette

65 65 48 33 65 65 48 33 50 — 42 33 48 — 42 33 43 — 37 33 40 — 37 33 37 — 33 33 34 — 33 33

LCF

Bypass feeding

(Copies/min.)

e-STUDIO810

(Copies/min.)

Paper supply

Paper size Size specified Size not specified

A4, LT, B5

A4-R, B5-R,

A5-R, L T-R, ST-R

B4, LG

A3, LD

“–” means “Not acceptable”.

Each copy speed described in the table of the previous page is available when doing a multiple copying

of the manually placed single-sided originals, and in this mode, only the top side discharging is carried out.

When using the automatic document f eeder, each copy speed of 55 [65] {81} copies/min. is a vailable

only when the following conditions are met:

• Original/Mode : Single-sided original, A4/LT size, 1 sheet/APS and automatic

• Preset number of sheets: 55 [65] {81} or more.

• Reproduction ratio : 100%

T op side discharging Back side discharging T op side discharging Back side discharging T op side discharging Back side discharging T op side discharging Back side discharging

Cassette

81 81 50 34 81 81 50 34 61 — 44 34 56 — 44 34 52 — 39 34 45 — 39 34 43 — 34 34 37 — 34 34

density are not selected.

Tandem

LCF

Bypass feeding

System copy speed

Copy mode

e-STUDIO e-STUDIO e-STUDIO

550 650 810

Single-sided originals 1 set 18"86 16"81 15"96

훹 3 sets 40"17 35"99 30"52

Single-sided copies 5 sets 61"92 53"56 45"19

Single-sided originals 1 set 21"28 20"70 20"46

훹 3 sets 42"91 39"47 36"37

Double-sided copies 5 sets 64"89 57"70 49"48

Double-sided originals 1 set 35"32 35"21 34"36

훹 3 sets 78"61 71"70 63"89

Double-sided copies 5 sets 121"96 108"01 95"06

Double-sided originals 1 set 31"77 31"49 30"88

훹 3 sets 74"75 67"97 60"58

Single-sided copies 5 sets 117"88 104"64 90"02

e-STUDIO550/650/810 SPECIFICATIONS 1 - 2 JUNE 2002 © TOSHIBA TEC

sec.

System copy speed, including

scanning time, is available when 10 sheets of A4-sized original are set on RADF and one of the copy modes in the left table is selected. 1st cassette is selected and copying

is at the sort mode. Finisher, hole-punch unit and inserter

are installed. Measurement deviation is included

since the system copy speed was measured by actual measurement.

• Copy paper

Cassette Duplex copy LCF Bypass copy Remarks

Size A3~A5R, A4, LT A3~A5-R, LD~ST-R, No guarantee for 8K,

LD~ST-R, 13"LG, 8.5"x8.5", 8.5"x8.5", 8K, 16K, 16K-R 16K, 16K-R at duplex

8K, 16K, 16K-R

(Non-standard or user-

copy

specified sizes can be set.)

Weight 64~209g/m2, 17~110lb. -inde x 64~209g/m

17Ib~110Ib -index

Special Tab paper _

paper

(2nd casette only) OHP film (thickness: should be recommanded

T racing paper , labels, Special types of paper

80µm or thicker), tab paper by T oshiba.

• First copy time ..................3.3 seconds or less (A4/LT , LCF, 100%, original placed manually)

• Warming-up time ................Approx.160 seconds (e-STUDIO550/650/810, Temperature: 20°C)

Notes: 1. This is at the condition not entering the toner supply operation.

2. The auto job start is not operated.

• Multiple copying.................Up to 9999 copies; set number entered with digital keys

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

Zooming: 25~400% in increments of 1%

(25~200% when using the RADF)

• Resolution/Gradation ......... Read: 600 dpi

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

(primary scanning only : 4 division smoothing)

• Eliminated image width......Leading edge: 3.0±1.0 mm, Trailig edge: 2.0±1.0 mm, Side edges: 2.0±2.0 mm

• P aper f eeding.....................Automatic feeding: Copier cassettes–2 cassettes (Paper stac k height

55 mm, equivalent to 550 sheets; 64 to 80 g/m2 (17 to 22 lb.Bond)) LCF (Paper stac k height 137 mm: equiv alent to 2500 sheets; 64 to 80 g/m2, 17 to 22 lb.Bond)

Bypass feeding: (Paper stac k height 11 mm : equivalent to 100 sheets;

64 to 80 g/m2, 17 to 22 lb.Bond)

• Capacity of originals in the automatic document feeder

.................A3~A5-R, LD~ST-R

: 100 sheets

• Automatic duplexer............Stackless, Switchback type

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

T oner cartridge replacing method (There is a recycle toner supplying system.)

JUNE 2002 © TOSHIBA TEC 1 - 3 e-STUDIO550/650/810 SPECIFICATIONS

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

• Weight ............................... Approx. 200kg, 441lb

• P ow er requirements ........... AC 115V/15A, AC 220 – 240V/10A

• Power consumption ...........2.0 kW or less (115V series, 200V series)

The electric power is supplied to the finisher and external LCF (optional) through the copier .

• T otal counter ......................Electronic counter

• Dimensions of the copier ... See the figure below . (W698x D778 x H1207 mm)

1207 mm

778 mm

698 mm

e-STUDIO550/650/810 SPECIFICATIONS 1 - 4 JUNE 2002 © TOSHIBA TEC

1. 2. Accessories

Unpacking/setup instruction 1 pc. Operator’s Manu al 1 pc. (not available for MJD) PM sticker 1 pc. (for MJD) Setup report 1 set. (for NAD and MJD) Customer satisfaction card 1 pc. (for MJD) Operator’s Manual pocket 1 pc. P ow er cable 1 pc. (for ASD, AUD and MJD) Warr anty sheet 1 pc. (for NAD) Drum 1 pc. Drum cover 1 pc. Original feeding tray 1 pc. Tab paper end guide 1 pc.

* Machine version

NAD: North America MJD: Europe AUD: Australia ASD: Asia

JUNE 2002 © TOSHIBA TEC 1 - 5 e-STUDIO550/650/810 SPECIFICATIONS

1. 3. Options

Finisher MJ-1017, MJ-1018 Hole punch unit MJ-6003N/E/F/S Inserter MJ-7001 Staple cartridge STAPLE-600/STAPLE-700 (for saddle stitcher) External large capacity feeder MP-4003A/L Key copy counter/Key copy counter socket MU-8/MU-10 Damp heater kit MF-6510U/E Printer controller GL-1020 Printer board GA-1140

1. 4. Supplies

Drum OD- 6510 Developer material D-6510 T oner PS-ZT6510/PS-ZT6510/PS-ZT -6510D T oner bag PS-TB6510/PS-TB6510E

e-STUDIO550/650/810 SPECIFICATIONS 1 - 6 JUNE 2002 © TOSHIBA TEC

1. 5. System List

Ke y counter

Key counter socke t

MU-10

MU-8

LCF

MP-4003

Printer board

GA-1140

Finisher

MJ-1017

Staple cartridge

STAPLE-600

Inserter

MJ-7001

Hole punch unit

MJ-6003

Finisher

MJ-1018

Staple cartridge

STAPLE-700

Printer controller

GL-1020

JUNE 2002 © TOSHIBA TEC 1 - 7 e-STUDIO550/650/810 SPECIFICATIONS

2. OUTLINE OF THE MACHINE

2. 1. Sectional View

2. 2. Electric Parts Layout

2. 3. Symbols and Functions of Various Components

2. 4. Symbols and Functions of RADF Various Components

2. 5. System Block Layout

2. 6. Disassembly and Replacement of Covers and PC Boards

2. 6 . 1. Covers

2. 6. 2. PC boards

2. OUTLINE OF THE MACHINE

2. 1. Sectional View

[A] Front side vie w

32 33 34 35 36 43

44 37 38 39

5 6

47 48 49 50

40 41

17 18

30 31

1213

1415

10 11

20 21

26 272829

23 22 24 25 52 54

55 53 56

57 58

61 62

JUNE 2002 © TOSHIBA TEC 2 - 1 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

65 66

1 Exposure lamp

41 Thermostat 2 Reflector 3 Mirror 1 4 Mirror 2 5 Mirror 3 6 Original glass 7 Lens 8 CCD driving PC board 9 Scanner control PC board

10 Drum 11 Drum thermistor 12 Charger wire cleaner 13 Main charger 14 Discharge LED 15 Drum cleaning b lade 16 Drum cleaning brush 17 Drum recov erly blade 18 Image quality sensor 19 Drum separation finger

42 Pressure roller thermistor

43 Exit roller

44 R e verse/e xit s witching gate

45 R e verse path roller 1

46 R e verse path roller 2

47 Transfer roller 1

48 Transfer roller 2

49 Transfer roller 3

50 Transfer roller 4

51 Registr ation roller

52 Bypass tr ansf er roller

53 Bypass separ ation roller

54 Bypass feed roller

55 Bypass pic kup roller

56 Intermiditate transf er roller

57 1st cassette tr ansf er roller

58 1st cassette feed roller

59 1st cassette separ ation roller

21 Upper de v eloper sleev e 22 L ower de v eloper sleev e

(Magnetic roller)

(Magnetic roller 23 Doctor b lade 24 Scattered toner reco v ery roller 25 A uto-toner sensor 26 Transfer belt driv en roller 27 Transfer belt po wer supply roller 28 Transfer belt 29 Transfer belt driv e roller 30 Transfer belt cleaning b lade 31 Transfer belt cleaning brush 32 Cleaning w eb 33 Cleaning w eb pushing roller 34 Fuser roller 35 Separ ation finger 36 Fuser exit roller 37 Pressure roller 38 Cleaning roller (metal)

60 1st cassette pic kup roller

)

61 2nd cassette transfer roller 62 2nd cassette feed roller 63 2nd cassette separ ation roller 64 2nd cassette pic kup roller 65 Tandem LCF transfer roller 66 Tandem LCF feed roller 67 Tandem LCF separation roller 68 Tandem LCF cassette pickup roller 69 1st cassette 70 2nd cassette 71 Tandem LCF tra y

39 Cleaning roller (f elt) 40 Fuser roller thermistor

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 2 JUNE 2002 © TOSHIBA TEC

[B] Rear side view (Drive system)

1234

JUNE 2002 © TOSHIBA TEC 2 - 3 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

1 Scanner motor 2 Drive pulley 3 Drive belt 4 Driven pulley 5 Drum motor 6 Dev eloper unit motor 7 Registration motor 8 Fuser motor

9 Web motor 10 Exit motor 11 R e v erse motor 12 LCF tr ay-up motor 13 LCF end fence motor

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 4 JUNE 2002 © TOSHIBA TEC

2. 2. Electric Parts Layout

[A] Unit construction

Reversing automatic document f eeder unit

Scanner unit

Laser unit

T r ansfer/Transport unit

Copier unit

Fuser unit

Rear side

JUNE 2002 © TOSHIBA TEC 2 - 5 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

[B] Scanner unit (B-1) Motor/Exposure lamp

(B-2) Sensor/Switch

A4 series

M31

S1-5

EXP

Rear side

S1-5

Rear side

S1-4

LT series

S1-4

Rear side

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 6 JUNE 2002 © TOSHIBA TEC

(B-3) PC board

SLG

(B-4) Other parts

CCD

INV

Rear side

DHR

DHL

THMO4

Rear side

JUNE 2002 © TOSHIBA TEC 2 - 7 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

[C] Laser unit

LDR1

GLV

LDR2

PLG

[D] T ransfer/Transport unit

DHT

FUSE

THMO3

SNS

Rear side

CLT3

CLT1CLT2

Rear side

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 8 JUNE 2002 © TOSHIBA TEC

[E] Fuser unit

THM1

THMO2

THM2

THMO1

M30

THM5

THM3

IHCOIL

Rear side

JUNE 2002 © TOSHIBA TEC 2 - 9 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

[F] Copier unit (F-1) Motor/Fa n

M19

M20

M26

M27 M28

M29

M18

M17

M25

M24

M16

M15

M21 M22

M14

M13 M23

M12

M11

M10 M9

M32

Rear side

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 10 JUNE 2002 © TOSHIBA TEC

(F-2) Clutch/Solenoid

SOL1

CLT4

SOL2

SOL3

CLT5

CLT6

SOL5 CLT8

CLT10

CLT7

CLT9

CLT11

SOL4

Rear side

JUNE 2002 © TOSHIBA TEC 2 - 11 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

(F-3) Sensor/Switch

S25

S26

S32

S38

S27

S33

S39

S28

S34

S40

S49

S29

S35

S41

S52

S50

S14

S51

S15

S31

S37

S42

S21

S30

S36

S16S17

S20

S19

S22

S24

S23

S18

S13

S10

S11

S12

S43

S44

S47

Rear side

S46S45

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 12 JUNE 2002 © TOSHIBA TEC

(F-4) PC board

SYS

HDD

MOT

LGC

HVT

MOT2

Rear side

JUNE 2002 © TOSHIBA TEC 2 - 13 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

(F-5) Other parts

THM4

S48

ERS

NF1

BRK1

Rear side

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 14 JUNE 2002 © TOSHIBA TEC

[G] Reversing automatic document f eeder

APS

RMOT

DLMTS

SIZE2

TLMOT

FMOT

SIZE1

COPSW

LMOT

SSOL

SMOT

COPS

EMPS

LLMTS

DFOPSW

READS

LNGS

TRYS

LOES

DFOPEN

TRVR

SOES

SSBS

REGS

ITFS

RSOL

SIZE3

LSOL

JUNE 2002 © TOSHIBA TEC 2 - 15 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

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 P-I Remarks

M1 SCAN-MOT Driving of the carriages 33-6 (B-1)

Scanner motor

M2 M/DC-POL Driving of the polygonal mirror 31-10 [C]

Polygonal motor

M3 WEB-MOT Cleaning web take-up 25-29 [E]

Web motor

M4 FEED-MOT Driving of the feeding section 6-2 (F-1)

Feed motor

M5 CST-TRY-MOT1 Driving ups of the 1st and 6-20 (F-1)

Cassette tray-up motor 2nd cassettes

M6 CST -TRY-MOT2 Driving ups of the tandem LCF tray 6-20 (F-1)

Casette tray-up motor 2

M7 RGST-MOT Driving of the registration roller 6-26 (F-1)

Registration motor

M8 DEV-MOT Driving of the developer unit 40-22 (F-1)

Developer unit motor

M9 DRUM-MOT Driving of the drum 39-18 (F-1)

Drum motor

M10 TRB-CAM-MOT Contact/Release of the transfer belt 18-7 (F-1)

Transfer belt cam motor

M11 REV-MOT Dr iving of the reverse section 13-5 (F-1)

Reverse motor

M12 USTNR-AUG-MOT Recovery of the toner scraped with 45-2 (F-1)

Used toner transport motor the transfer belt cleaning blade

M13 EXIT-MOT Driving of the exit roller 13-25 (F-1)

Exit motor

M14 FUSER-MOT Driving of the fuser unit 24-5 (F-1)

Fuser motor

M15 TRB-MOT Driving of the transfer belt 18-26 (F-1)

Transfer belt motor

M16 FUR-MOT Dr iving of the transfer belt cleaning 30-12 (F-1)

Cleaning brush drive motor brush

M17 CH-CLN-MOT Driving of the charger wire cleaner 37-8 (F-1)

Charger wire cleaner drive motor

M18 TNR-MOT Toner supply 44-27 (F-1)

New toner supply motor

M19 TNR-RCY-HOP-MOT Driving of the recycle toner hopper 46-15 (F-1)

Toner recycle hopper motor

M20 RCY-TNR-MOT Transpor ting of the recycle toner 46-19 (F-1)

Recycle toner transport motor

M21 HTR-FAN-MOT Cooling down of the copier inside 31-7 (F-1)

Heater fan motor

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 16 JUNE 2002 © TOSHIBA TEC

Symbol Name Function P-I Remarks

M22 ADU-FAN-MOT1 Cooling down the reverse section 15-12 (F-1)

Reverse section fan motor 1

M23 ADU-FAN-MOT2 Cooling down the reverse section 15-12 (F-1)

Reverse section fan motor 2

M24 EXIT-FAN-MOT Cooling down of the exit section 31-7 (F-1)

Exit fan motor

M25 DUCT-OUT-FAN-MOT Sucking of ozone 31-7 (F-1)

Duct out fan motor

M26 LSU-FAN-MOT Cooling down of the laser unit 31-7 (F-1)

Laser unit fan motor

M27 DUCT-IN-FAN-MOT Cooling down of the copier inside 40-25 (F-1)

Duct in fan motor

M28 SYS-FAN-MOT Cooling down of the copier inside 52-24 (F-1)

System fan motor

M29 DEV-FAN-MOT Sucking of the toner in the developer 40-13 (F-1)

Developer unit fan motor unit

M30 IH-FAN-MOT Cooling down of the IH board 24-17 [E]

IH fan motor

M31 SLG-FAN-MOT Cooling down of the SLG board 32-10 (B-1)

SLG fan motor

M32 END-F-MOT Moving of the end fence 9-22 (F-1)

End fence motor

JUNE 2002 © TOSHIBA TEC 2 - 17 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

(2) Sensos and switches

Symbol Name Function P-I Remarks

S1-5 APS 1-5 Original size detection 36-6 (B-2)

Automatic original detection sensor

S2 HOME-SNR Carriage home position detection 36-12 (B-2)

Carriage home position sensor

S3 TR-SNR 1 Paper detection at the reversed 20-23 [D]

Transpor t sensor 1 paper transport path

S4 TR-SNR 2 Paper detection at the reversed 20-23 [D]

Transpor t sensor 2 paper transport path

S5 TR-SNR 3 Paper detection at the reversed 20-23 [D]

Transpor t sensor 3 paper transport path

S6 WEB-SNR Cleaning web take-up amount 25-8 [E]

Web detection sensor detection

S7 FUS-EXIT-SNR Paper detection at the fuser unit 25-8 [E]

Fuser unit exit sensor

S8 MAIN-SW ON/OFF of the copier AC power 28-11 (F-5)

Main switch supply

S9 DOOR-SW Turning OFF of the AC power supply 28-24 (F-5)

Front door switch when opening the front cover

Interlock switch

S10 EXIT-SNR Paper detection at the exit section 15-25 (F-3)

Exit sensor

S11 RVS-SNR Paper detection at the reverse section 15-14 (F-3)

Reverse sensor 1

S12 RVS-SNR Paper detection at the reverse section 15-14 (F-3)

Reverse sensor 2

S13 EXIT-COV-SW Cover open/close detection at the 15-11 (F-3)

Exit cover switch exit cover

S14 DEV-SW Detection of the developer unit 5-16 (F-3)

Developer unit switch presence or absence

S15 TNR-SW Toner car tridge detection 44-18 (F-3)

Toner cartridge switch

S16 DRUM-SUF-SNR Detection of the drum surface 5-13 (F-3)

Drum surface potential sensor potential

S17 ATTNR-SNR Toner density detection 42-26 (F-3)

Auto-toner sensor

S18 TNLVL-SNR Toner adhesion amount detection 49-16 (F-3)

Image quality sensor

S19 CH-HOME-SW Detection of the wire cleaner home 37-13 (F-3)

Wire cleaner home position switch position

S20 MID-TR-SNR Paper detection at the feeding section 17-6 (F-3)

Intermediate transport sensor

S21 RGST-SNR Paper detection at the registration 16-6 (F-3)

Registration sensor section

S22 TR-BELT-SW 1 Transfer belt release position 18-3 (F-3)

Transfer belt release switch detection

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 18 JUNE 2002 © TOSHIBA TEC

Symbol Name Function P-I Remarks

S23 TR-BELT-SW 2 Transfer belt contact position 18-2 (F-3)

Transfer belt contact switch detection

S24 TNR-FULL-SNR Used toner full detection 45-17 (F-3)

Toner bag full detection sensor

S25 COV-R-SNR Feed cover open/close detection 28-7 (F-3)

Feed cover sensor

S26 CST1-TR-SNR 1st cassette paper detection 7-18 (F-3)

1st cassette transport sensor

S27 CST1-TRY-SNR 1st cassette tray position detection 7-18 (F-3)

1st cassette tray-up sensor

S28 CST1-FED-SNR 1st cassette paper detection 7-18 (F-3)

1st cassette feed sensor

S29 CST1-EMP-SNR Detection of 1st cassette paper 7-18 (F-3)

1st cassette empty sensor presence or absence

S30 CST1-BTM-SNR 1st cassette position lower limit 7-18 (F-3)

1st cassette bottom sensor detection

S31 CST1-SNR Detection of 1st cassette presence or 7-18 (F-3)

1st cassette detection sensor absence

S32 CST2-TR-SNR 2nd cassette paper detection 7-18 (F-3)

2nd cassette transport sensor

S33 CST2-TRY-SNR 2nd cassette tray position detection 7-18 (F-3)

2nd cassette tray-up sensor

S34 CST2-FED-SNR 2nd cassette paper detection 7-18 (F-3)

2nd cassette feed sensor

S35 CST2-EMP-SNR Detection of 2nd cassette paper 7-18 (F-3)

2nd cassette empty sensor presence or absence

S36 CST2-BTM-SNR 2nd cassette position lower limit 7-18 (F-3)

2nd cassette bottom sensor detection

S37 CST2-SNR Detection of 2nd cassette presence 7-18 (F-3)

2nd cassette detection sensor or absence

S38 LCF-TR-SNR Paper detection at the tandem LCF 7-18 (F-3)

Tandem LCF transpor t sensor feeder section

S39 LCF-TRY-SNR Tandem LCF tray position detection 7-18 (F-3)

Tandem LCF tray-up sensor

S40 LCF-FED-SNR Paper detection at the tandem LCF 7-18 (F-3)

Tandem LCF feed sensor feeder section

S41 LCF-EMP-SNR Detection of paper presence or 7-18 (F-3)

Tandem LCF empty sensor absence at tandem LCF

S42 LCF-SNR Detection of the tandem LCF tray 7-18 (F-3)

Tandem LCF detection sensor presence or absence

S43 LCF-BTM-SNR Tray home position detection 8-14 (F-3)

Tandem LCF bottom sensor

S44 END-F-STP-SNR End fence stop position detection 8-14 (F-3)

End fence stop position sensor

JUNE 2002 © TOSHIBA TEC 2 - 19 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

Symbol Name Function P-I Remarks

S45 EMP-SNR-SS Paper position detection at the 18-14 (F-3)

Standby side empty sensor standby side

S46 END-F-HP-SNR End fence home position detection 18-14 (F-3)

End fence home position sensor

S47 PR-MST-SS Detection of the paper mis-stacking 18-16 (F-3)

Standby side paper mis-stacking sensor at the standby side

S48 HTR-SW Detection of the fuser unit presence 24-7 (F-5)

Fuser unit switch or absence

S49 SFB-COV-SNR Open/close detection of the bypass 28-7 (F-3)

Bypass feed unit cover sensor feed unit cover

S50 SFB-FED-SNR Paper detection at the bypass feeding 10-23 (F-3)

Bypass sensor

S51 SFB-SIZE-SNR Paper size detection at the bypass 12-9 (F-3)

Bypass paper size detection sensor feed width detection

S52 TEMP/HUMI-SNR Detection of the temperature and 3-103 (F-3)

Temperature/humidity sensor humidity of the copier inside

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 20 JUNE 2002 © TOSHIBA TEC

(3) Electromagnetic spring clutches

Symbol Name Function P-I Remarks

CLT1 TR-DRV-CLT Dr iving of the reversed paper 19-21 [D]

Reversed paper transport driving clutch transpor t section

CLT2 REV-TR1-CLT Reversed paper transporting 20-21 [D]

Reversed paper transport clutch 1

CLT3 REV-TR2-CLT Reversed paper transporting 20-21 [D]

Reversed paper transport clutch 2

CLT4 MDL-TR-CLT Paper transporting 17-23 (F-2)

Intermediate transport clutch

CLT5 SFB-FEED-CLT Driving of the bypass pickup roller 11-13 (F-2)

Bypass feed clutch

CLT6 CST1-TR-CLT 1st cassette paper transporting 7-26 (F-2)

1st cassette transport clutch

CLT7 CST1-FED-CLT Driving of 1st cassette pickup roller 7-26 (F-2)

1st cassette feed clutch

CLT8 CST2-TR-CLT 2nd cassette paper transporting 7-26 (F-2)

2nd cassette transport clutch

CLT9 CST2-FED-CLT Driving of 2nd cassette pickup roller 7-26 (F-2)

2nd cassette feed clutch

CLT10 LCF-TR-CLT Tandem LCF paper transpor ting 7-26 (F-2)

Tandem LCF transpor t clutch

CLT11 LCF-FED-CLT Driving of the tandem LCF pickup 7-26 (F-2)

Tandem LCF feed clutch roller

(4) PC boards

Symbol Name Function P-I Remarks

SLG PWA-F-SLG Control of the scanning section and 36-1 (B-3)

Scanning section control PC board (SLG board) image processing

CCD PWA-F-CCD Preprocessing control of the CCD 32-17 (B-3)

CCD driving PC board (CCD board) image data

SYS PWA-F-SYS Control of the whole copier 52-10 (F-4)

System PC board (SYS board) Data processing

LGC PWA-F-LGC Control of the whole copier 52-14 (F-4)

Logic PC board (LGC board)

LDR1 PWA-F-LDR1 Driving of the laser diode 31-10 [C]

Laser driving PC board 1 (LDR board 1)

LDR2 PWA-F-LDR2 Driving of the laser diode 31-10 [C]

Laser driving PC board 2 (LDR board 2)

SNS PWA-F-SNS Detection of the laser beam position 31-10 [C]

H-Sync detection PC board

IH PS-IH Control of the fuser unit IH coil 24-16 [E]

IH control board

FUSE PWA-F-FUS Cutting of the electric current to the 21-30 [D]

Fuse PC board damp heater

JUNE 2002 © TOSHIBA TEC 2 - 21 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

Symbol Name Function P-I Remarks

MOT PWA-F-MOT Driving of the drum motor and 24-21 (F-4)

Motor driving PC board transfer belt motor

MOT2 PWA-F-MOT2 Driving of the reverse motor 13-19 (F-4)

Motor driving PC board 2

PLG PWA-F-PLG Control of the printing section and 31-16 [C]

Laser control PC board (PLG board) image processing

(5) Heaters and lamps

Symbol Name Function P-I Remarks

EXP LP-EXPO Exposing of original to the light 34-3 (B-1)

Exposure lamp

DHR DNP- HTR-R Preventing of the condensation in the 36-11 (B-4)

Scanner damp heater (R) scanning section (for mirrors)

DHL DNP-HTR-L Preventing of the condensation in the 36-9 (B-4)

Scanner damp heater (L) scanning section (for lens)

DHD D-HTR Keeping of the drum warm 21-28 [D]

Drum damp heater

IHCOIL IH-COIL Heating up of the fuser roller 25-36 [E]

IH coil

(6) Solenoid

Symbol Name Function P-I Remarks

SOL1 SFB-SOL Driving of the bypass pickup roller 10-8 (F-2)

Bypass pickup solenoid

SOL2 GATE-SOL Switching of the gate at the reverse 15-2 (F-2)

Gate solenoid section

SOL3 SEP-FING-SOL Driving of the dr um separation finger 30-17 (F-2)

Drum separation finger solenoid

SOL4 END-F-SOL Moving of the lever to detect the 8-9 (F-2)

End fence solenoid paper mis-stacking at the standby

side tray

SOL5 LCF-PICK-SOL Driving of the Tandem LCF pickup 7-36 (F-2)

Tandem LCF pickup solenoid roller

(7) Transformer

Symbol Name Function P-I Remarks

HVT PS-HVT Generating of the voltages for the 51-19 (F-4)

High-voltage transformer followings:

• main charger wire

• main charger grid

• developer bias

• drum cleaning brush

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 22 JUNE 2002 © TOSHIBA TEC

(8) Others

Symbol Name Function P-I Remarks

INV INV-EXP Control of the exposure lamp 34-4 (B-3)

Lamp inverter

HDD HDD Storing of the image data 52-16 (F-4)

Hard disk

GLV MIR-GLV Control of the laser 31-10 [C]

Galvanometer mirror

PS PS-ACC Power supplying 51-18 (F-5)

Switching power supply

THMO1 THERMO-HTR Preventing of the fuser unit 26-4 [E]

Center thermostat over-heating

THMO2 THERMO-S-HTR Preventing of the fuser unit 26-4 [E]

Side thermostat over-heating

THMO3 DAMP-HTR Preventing of the dump heater 21-31 [D]

Dump heater thermostat over-heating

THMO4 THERMO-EXP Preventing of the dump heater 36-9 (B-4)

Expousre lamp thermostat over-heating in scanner section

THM1 THMS-S-HTR Detection of the surface temperature 26-6 [E]

Fuser roller side thermistor (front) at the drum edges/Abnormal detection

THM2 THMS-HTR Detection of the surface temperature 26-6 [E]

Fuser roller center thermistor at the drum center

THM3 THMS-S-HTR Detection of the surface temperature 26-6 [E]

Fuser roller side thermistor (rear) at the drum edges

THM4 THMS-DRM Detection of the drum surface 49-12 (F-5)

Drum thermistor

THM5 THMS-L-HTR Detection of the surface temperature 26-28 [E]

Pressure roller thermistor of the pressure roller

NF1 NOIZ-FILTER1 Noize cut 51-7 (F-5)

Noize filter 1

BRK1 BREAKER1 Safety switch 51-6 (F-5)

Breaker 1

BRK2 BREAKER2 Safety switch 51-6 (F-5)

Breaker 2

ERS CD-ERS Removing of the residual charge from 37-11 (F-5)

Discharge lamp the drum surface

JUNE 2002 © TOSHIBA TEC 2 - 23 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

2. 4. Symbols and Functions of RADF Various Components

(1) Motors

Symbol Name Function Remarks

RMOT RMOT ·Driving of the transport roller Stepping motor

Read motor (P83-I27)

SMOT SMOT ·Driving of the small original exit roller Stepping motor

Small original exit motor and small original reverse roller (P87-I14)

TLMOT UDMOT ·Driving of the tray lift motor Stepping motor

Tray lift motor (P86-I20)

FMOT FMOT ·Driving of the f eed roller , pic kup roller Stepping motor

Feed motor and registration roller (P86-I19)

LMOT LMOT ·Driving of the large original e xit roller Stepping motor

Large original exit motor and large original reverse roller (P87-I13)

(2) Solenoids

Symbol Name Function Remarks ESSOL ESSOL ·Disengagement of the large original DC solenoid

Disengagement solenoid exit roller (P89-I4)

LSOL LSOL ·Switching of the large original exit DC solenoid

Large original exit solenoid

SSOL SSOL ·Switching of the small original exit DC solenoid

Small original exit solenoid

flapper (P89-I3)

flapper and reverse flapper (P87-I1)

(3) PC boards

Symbol Name Function Remarks

DFLG PW A-F-ADF ·Control of the ADF (P88-I13)

ADF PC control board (ADF board)

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 24 JUNE 2002 © TOSHIBA TEC

(4) Switches and sensors

Symbol Name Function Remarks

COPSW COV-OPN-SW Detecting if the jam access cover is Mi cro switch

Cover open/close s witch opened/closed (Interlock switch) (P86-I13)

DFOPSW DF-OPN-SW Detecting if RADF is opened/closed Micro switch

RADF open/close switch (Interlock switch) (P88-I101)

DFOPNS DF-OPN-SNS Detecting if RADF is opened/closed Semiconductive

RADF open/close sensor photosensor (P89-101)

APS AUTO-PS-SNS Detecting the angle opened and Semiconductive

APS operation sensor switching ON/OFF of the APS sensor photosensor (P86-I105)

COPS COV-OPN-SNS Detecting if the jam access cover is Semiconductiv e

Cover open/close sensor opened/closed photosensor (P81-I29)

EMPS EMP-SNS Detecting the presence or absence of Semiconductive

Empty sensor original during feeding photosensor (P81-I29)

ULMTS UP-LMT-SNS Detecting the upper limit of the lifting tra y Semiconductive

Upper limit sensor photosensor (P81-I29)

SIZES1 SIZE-SNS1 Detecting the original width Semiconductiv e

Original width sensor 1 photosensor (P91-I103)

SIZES2 SIZE-SNS2 Detecting the original width Semiconductiv e

Original width sensor 2 photosensor (P91-I103)

SIZES3 SIZE-SNS3 Detecting the original width Semiconductiv e

Original width sensor 3 photosensor (P91-I103)

REGS REG-SNS Detecting original at the registering Semiconductive

Registration sensor section photosensor (P91-I103)

TRYS TRY-SNS Detecting the original length on the tray Semiconductive

Tray sensor photosensor (P93-I102)

LLMTS LO-LMT-SNS Detecting the lower limit of the lifting tray Semiconductive

Lower limit sensor photosensor (P82-I36)

ITFS INT-F-SNS Detecting original on the small original Semiconductive

Intermediate transpor t sensor

transport path photosensor (P90-I103)

SOES SO-EX-SNS Detecting original at the small original Semiconductiv e

Small original exit sensor e xit photosensor (P84-I105)

READS READ-SNS Detecting original at the scanning Semiconductive

Read sensor section photosensor (P83_I36)

LNGS LENG-SNS Detecting the original length Semiconductive

Original length sensor photosensor (P82-I31)

SSBS SO-SB-SNS Detecting original at the small original Semiconductive

Small original reverse sensor

reverse section photosensor (P84-I31)

TRV R TRY-VR Detecting the original width on the trayRotary volume

Tray width sensor (P93-I6)

LOES LO-EX-SNS Detecting original at the large original Semiconductive

Large original exit sensor exit photosensor (P85-I15)

JUNE 2002 © TOSHIBA TEC 2 - 25 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

2. 5. System Block Layout

ADF

CCD

Serial-I/F

PWA-F-SLG-340

Flash

ROM

AmpAmp

CPU

ASIC

S-CPU

SRAM

Serial-I/F

Controller Printer

A/DA/D

SDRAM

Image Data

ASIC

ADR/DAT-Bus

Image Data

SRAM

PCI-Bus

ASIC

IDE-I/F

Laser Unit

PWA-F-CCD2-340

PWA-F-PLG-340

JIG

Download

ROM

Flash

Local-

Bus

RTC

D/A

ROM

Flash

NVRAM

ASIC

PWA-F-LDR-340

ASIC

Image Data

ASIC

SDRAM

PWA-F-LDR-340

ASIC

PWA-F-SCN-340

8 8

PWA-F-SYS-340

SRAM

Laser

ROM

Flash

Image Data

Beam

ASIC

D/A

ADR/DAT-Bus

Serial-I/F

Sensor

PWA-F-SNS-340

PWA-F-LGC-340

L-CPU

SRAM

Gate

Mirror

Galvanic

DRV

Galvano

D/A

ROM

Flash

NVRAM

Serial-I/F

ADR/DAT-Bus

Array

ROM

Flash

M-CPU

Serial-I/F

ADR/DAT-Bus

PFC

IPC

LCF

Printer Board

HDD

123 456

LCD

789

-C

TANDEM LCF

Finisher

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 26 JUNE 2002 © TOSHIBA TEC

2. 6. Disassembly and Replacement of Covers and PC boards

2. 6. 1. Covers

[A] Front co v er/Front side right inner cover (1) Open the front cov er. (2) Pull out 2 L-shaped pins and take off the front

cover.

L-shaped pin

Front cover

(3) Remove 2 screws and take off the front side

right inner cover .

[B] Feed side rear cov er/Feed side top cover/ Feed side center cov er (1) Remov e 1 scre w and take off the feed side

rear cover.

(2) Remove 2 screws and take off the feed side

top cover.

(3) Open the bypass unit tr a y and remo ve 2

screws. Then remo ve 6 screws and take off the feed side center cov er.

Front side right inner cover

Feed side top cover

Feed side center cover

Feed side rear cover

[C] Exit side top cover/Exit side rear cover/ Exit side bottom cover (1) Remove 2 screws and take off the exit side

Exit side rear cover

Exit side top cover

top cover.

(2) Remove 1 screw and take off the exit side

rear cover.

(3) Remove 6 screws and take off the exit side

bottom cover.

Exit side bottom cover

JUNE 2002 © TOSHIBA TEC 2 - 27 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

[D] Rear cover (1) Loosen 1 screw (sho wn by a white arrow),

remove 6 scre ws, release 2 hooks and take off the rear cover.

Hook

[E] Right top cover (1) Remov e 1 screw and take off the right top

cover.

[F] Left top cover (1) Remov e 1 screw and take off the left top

cover.

Right top cover

Left top cover

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 28 JUNE 2002 © TOSHIBA TEC

2. 6. 2. PC boards

[A] System control board (SYS board)/Hard disk/ Logic board (LGC board) (1) Remove the rear co ver. (2) Disconnect 1 connector . (3) Remov e 2 scre ws (shown by 2 white arrows),

loosen 14 screws and take off the rear feed side inner cover (plate co v er).

(4) Remove 1 screw (shown by a white arrow),

loosen 8 screws and take off the rear e xit side inner cover (plate co v er).

(5) Disconnect 7 connectors, remov e 6 screws

and take off the SYS board.

(6) Disconnect 2 connectors, remov e 4 screws

and take off the hard disk with the brac k et.

(7) Remove 4 screws and release the hard disk

from the bracket.

Rear feed side inner cover

SYS board Hard disk bracket

Rear exit side inner cover

(8) Disconnect 19 connectors, remove 6 screws

and take off the LGC board.

[B] High-voltage transformer (1) Disconnect 7 connectors to the SYS board

and hard disk.

(2) Remove 9 screws and take off the brack et

with the LGC board and hard disk.

LGC board

SYS board

Hard disk

JUNE 2002 © TOSHIBA TEC 2 - 29 e-STUDIO550/650/810 OUTLINE OF THE MACHINE

(3) Disconnect 19 connectors to the LGC board. (4) Remov e 6 screws and take off the bracket

with the LGC board.

LGC board

(5) Disconnect 6 connectors, remov e 1 screw ,

release 3 lock supports and take off the highvoltage transf ormer.

[C] Po wer supply unit (1) Remov e the SYS board, hard disk and LGC

board with the bracket.

(2) Remov e 4 screws and take off the bracket of

the power supply unit.

High-voltage transformer

Lock support

(3) Disconnect 1 link connector . (4) Remov e 9 connectors and pull out the po wer

supply unit.

Note: Be careful not for the power supply unit to be

caught by harnesses.

Link connector (3)

e-STUDIO550/650/810 OUTLINE OF THE MACHINE 2 - 30 JUNE 2002 © TOSHIBA TEC

3. COPY PROCESS

3. 1. General Description

3. 2. Details of Copy Process

3. 3. Comparison of Copy Process to 6570/5570

3. COPY PROCESS

3. 1. General Description

Image processing

Discharging

Original exposure

2 3

Xenon lamp

29W

-733V (grid voltage)

Discharging

LED array (wavelength 660nm x 16)

Blade cleaning

Fur brush cleaning

Fusing

Fuser roller

700~1450W

Charging

–

Scanning

CCD

600dpi, 7500pixel

–

– –

++++

–

Transfer/Separation

80µA

Writing

Semiconductor laser

Pw=3.8nJ/mm

Toner

Carrier

–

Bias -500VDC+AC

Development

Magnetic roller

Bypass feeding

Cassette feeding

(1) Charging: Negatively charges the surface of the

photoconductive drum.

훹

(2 ) Original exposure: Converts images into optical

signals.

훹

(3) Scanning: Converts image optical signals into

electrical signals.

훹

(4 ) Writing: Conv erts image electrical signals into

optical signals (laser emission) and exposes them to the surface of the photoconductive drum.

훹

(5) Development: Makes the negatively-charged

toner adhere to the photoconductive drum and forms a visible image.

훹

Cleaning brush + Blade

LCF feeding

5µA

(6) Transfer: Transfers the visible image on the

photoconductive drum onto a paper . Separation: Separates the paper from the drum together with the toner.

훹

(7) Fusing: Fuses the toner on the paper by applying

heat and pressure.

훹

(8 ) Fur brush cleaning: Cleans dirt and paper dust

on the drum.

훹

(9 ) Blade cleaning: Forcibly removes the residual

toner on the drum.

훹

(10) Discharging: Discharges any remaining

negative charge on the drum.

JUNE 2002 © TOSHIBA TEC 3 - 1 e-STUDIO550/650/810 COPY PROCESS

3. 2. Details of Copy Process

(1) Photoconductive drum The photoconductive drum has two layers, an outer and an inner lay er. The outer la yer is a photoconductive layer made of an organic photoconductive carrier (OPC). The inner layer is an aluminum conductive base in a cylindrical form. The photoconductive carrier has the characteristic that its electrical resistance changes depending on the strength of the light exposed. Example:

· Strong light촞

Resistance is decreased (works as a conductor.)

· Weak light촞

Resistance is increased (works as an insulator.)

[Formation of electrostatic latent image] In the processes of charging, scanning, printing and discharging described below , negative potential on the areas of the drum corresponding to black areas of the original is eliminated, while the areas of the drum corresponding to white areas remains the negative charge. As this image on the drum formed by the negative potential is invisible, it is called an “electrostatic latent image.”

Photoconductive layer

Aluminum conductive base

Structure of the photoconductive drum (OPC)

Time (t)

– 500

Black area of original

Surface potential (V)

Discharging process

– 1000

Charging process

White area of original

Electric potential on the photoconductive drum

Main charger

(2) Charging Charging is a process of uniformly applying a charge uniformly to the photoconductive drum surface. The charger wire produces a negative corona dis-

Rotation of drum charge, which is controlled by the grid so that the drum surface is uniformly charged with negative potential. The surface potential on the drum is determined by the grid potential and controlled to a certain value by the grid control circuit.

e-STUDIO550/650/810 COPY PROCESS 3 - 2 JUNE 2002 © TOSHIBA TEC

Discharge transformer

Grid control circuit

(3) Scanning Scanning is a process of exposing the original to the light and converting the reflection into electrical signals. The light reflected from the original is impor ted to the charge coupled device (CCD) and this optical image information is converted into electrical signals (image signals), which are then sent to the image processing section.

CCD

Image processing

section

(Example)

(4) Writing Writing is a process of converting the image signals sent from the image processing section into optical signals and exposing the drum surface to the light. Semiconductor laser element converts image signals sent from the image processing section into optical signals (laser emission) and exposes the drum surface to the light to form an electrostatic latent image on it.

CCD light receiving amount

Light

쩪

Dark 0

Image

processing

section

Polygonal mirror

Photo-

conductive

drum

V alue of image signals to be output

255

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

Laser Drive

board

Semiconductor laser element

JUNE 2002 © TOSHIBA TEC 3 - 3 e-STUDIO550/650/810 COPY PROCESS

(5) Development Development is a process of making the electrostatic latent images visible to the eye (visible images). Developer material is supplied to the photoconductive drum surface by 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).

Magnet

Magnetic roller

Bias voltage –500 VDC

Photoconductive drum

Toner

Carrier (always attracted onto the magnet)

Toner

The (–) potential of the drum being higher than the developer bias

The (–) potential

Toner

of the drum being lower than the developer bias

Photoconductive layer

Aluminum conductive base

Dru m Magnetic roller

White background Half tone Solid

– 700V – 600V – 500V

– 400V – 300V

– 200V – 100V

White background

Image not developed

Image is developed by

toner

Bias potential

e-STUDIO550/650/810 COPY PROCESS 3 - 4 JUNE 2002 © TOSHIBA TEC

• Developer material The developer material is a mixture of toner and carrier. The toner is charged to negative polarity and the carrier to positive polarity , due to the friction with each other caused by mixing. Toner :Mainly consists of resin and carbon. Carrier : Consists of ferrite and resin coating on its

surface to provide consistent frictional electrification.

Resin (90~95%)

[Toner]

Carbon (5~10%)

5~20µm

Ferrite

30~100µm

[Carrier]

Note:

If the developer material is used for a long time (beyond its normal life span), the toner is caked onto the carrier.

훹

The carrier’s (charging) performance is lowered. Symptom: 1. Image density is decreased.

2. Toner scattering occurs.

3. Background fogging occurs.

Solution: Replace new developer material.

• Magnetic roller

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

훹

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

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

Photoconductive drum

Toner

Lines of magnetic force

Carrier

Magnetic roller

JUNE 2002 © TOSHIBA TEC 3 - 5 e-STUDIO550/650/810 COPY PROCESS

Additional Explanation

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

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

2. Size and density of originals

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

partially open)

4. Temperature and humidity in the room when making copies

5. Copy 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

74,000

70,000

60,000

50,000

40,000

30,000

20,000

46,000 40,000

30,000

20,000

27,000

20,000

15,000

38,000

30,000

20,000

Type of originals

e-STUDIO550/650/810 COPY PROCESS 3 - 6 JUNE 2002 © TOSHIBA TEC

(6) T ransfer/Separation Transfer: Transfer is a process of transfering the toner image (visible image) formed on the drum surface onto the paper. An electric charge applied by the high voltage power supply flows to the transfer belt from the power supply roller. Then it flows to the paper and photo conductor. The toner, which has been developed on the photo conductor, is transfered to this paper with an electric charge. Separation: The paper is absorbed to the belt and separated from the drum by the electrostatic attraction acting between the belt (plus charge) and the polarization charge (minus charge) on the bottom surface of the paper.

Toner

Drum

Transfer belt

Paper

Drum

Aluminum conductive base

Photoconductive layer

Paper

Transfer belt

Reference

Combined use of transfer belt and

• separation finger To prevent the copy paper from failing to be separated during the operation, due to incomplete transfer belt charging or absorption of moisture, and thus jamming up the cleaner, a separation finger mechanically separates any copy paper which fails to be separated.

Power supply roller

Separation finger

Rotation of drum

Paper movement

Transfer belt

JUNE 2002 © TOSHIBA TEC 3 - 7 e-STUDIO550/650/810 COPY PROCESS

(7) Fusing Fusing is a process of melting and fixing the toner on the paper. Method : The melting point of the toner (main

ingredient: resin) is 100~110°C.

훹

(Heat) The 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 adherence of the melted toner to the paper.

훹

Heat and pressure are applied to the paper when it passes between the fuser roller and pressure roller.

(Fusing) The toner is fixed on the paper.

Fuser roller

Paper

Pressure

IH coil Fuser roller

Separation finger

Paper mov ement

Pressure

(8) Cleaning Cleaning is a process of recovering the residual toner on the photoconductive drum.

1. The cleaning brush scrapes off the excessive toner and paper wastes. The flicker scrapes off the toner on the brush. Also, too pervent the cleaning b lade from scratching the surface of the drum to make a circumferential streak, the varistor is attached between the brush and earth.

2. Cleaning blade scrapes off the residual toner on the drum.

3. The reco very blade pic ks up the scraped toner .

Pressure roller

Cleaning blade

Drum rotation

Cleaning brush

Flicker

Recovery blade

e-STUDIO550/650/810 COPY PROCESS 3 - 8 JUNE 2002 © TOSHIBA TEC

(9) Discharging Discharging is a process of eliminating the (–) charge remaining on the photoconductive drum before the next charging process begins. If discharging does not occur, the following phenomenon will occur:

The (–) charge remains on the photoconductive drum.

훹

Uneven charge is applied to the drum during the next copy.

훹

The next copy has a double image. (Preceding image appears.)

Solution : Expose the entire surface of the photoconductive drum to the light by the discharge LED array.

훹

The photoconductive drum becomes electrically conductive.

훹

All the (–) charges remaining on the photoconductive drum are conducted to the ground.

훹

The preparation for the next copy is completed.

Dischage LED array

Drum

JUNE 2002 © TOSHIBA TEC 3 - 9 e-STUDIO550/650/810 COPY PROCESS

3. 3. Comparison of Copy Process to 6570/5570

Process

1. Photoconductive drum (1) Sensitivity (2) Surface potential

2. Charging

OD-6570 (OPC drum) OD-6510 (OPC drum) Highly sensitized drum Same as 6570/5570 –650 V (grid voltage –720V) –700 V (grid voltage –733V) Scolotron method (constant current) Same as 6570/5570

6570/5570 e-STUDIO550/650/810

Grid output variable Same as 6570/5570

3. Surface potential controlling

Non e Surface potential sensor

4. Writing (1) Light source Semiconductor laser (adjustment Same as 6570/5570

not required)

(2) Light amount 4.0 nJ/mm

3.8nJ/mm

5. Image density control Image quality sensor Same as 6570/5570

6. Development (1) Magnetic roller Two magnetic rollers Same as 6570/5570

(2) Auto-toner Magnetic bridge-circuit method Same as 6570/5570 (3) Toner supply Toner hopper system Toner cartridge system

(There is a toner recycle system.)

(4) Toner-empty detection Density detection method/lever joint Density detection system

use (5) Toner T-6570/6570E T-6510/6510E/6510D (6) Developer material D-6570J D-6510 (7) Developer bias DC-400V + AC DC-500V + AC

7. Transfer (1) Transfer Transfer belt Transfer belt

(Electrical resistance is lower than

6570/5570.) (2) Power supply roller Power supply roller Power supply roller Separation auxiliary roller Separation auxiliary roller

8. Separation Transfer belt charging Same as 6570/5570

Separation finger applied Same as 6570/5570

9. Discharging (1) Discharging position Discharge by exposure after cleaning Same as 6570/5570 (2) Discharge lamp Discharge by red LED Same as 6570/5570 (3) Pre-cleaning discharge N one Same as 6570/5570

10. Cleaning (1) System Blade + Brush Same as 6570/5570 (2) Recovered toner Not acceptable Reuse (by the toner recycle system)

11. Cleaning brush bias Earth Varistor 430V

e-STUDIO550/650/810 COPY PROCESS 3 - 10 JUNE 2002 © TOSHIBA TEC

Process 6570/5570 e-STUDIO550/650/810

12. Fusing (1) System Long-life heat roller system Same as 6570/5570

· Fuser roller: · Fuser roller: Fluoroplastic-coated roller (ø60) Fluoroplastic-coated roller (ø60)

· Pressure roller: · Pressure roller:

PFA tube roller (ø60) PFA tube roller (ø60)

(2) Cleaning · Fuser roller cleaning roller (ø33) · Cleaning web (for fuser roller cleaning)

· Cleaning felt roller (ø27)

· Pressure roller cleaning felt roller (ø28) · Pressure roller cleaning felt roller

· Cleaning metal roller · Pressure roller cleaning metal roller

(3) Heater Halogen lamp (Lamp system) IH coil (Induction heating system)

(Lamp rating: 800W + 300W) ON/OFF control by thermistor Same as 6570/5570

JUNE 2002 © TOSHIBA TEC 3 - 11 e-STUDIO550/650/810 COPY PROCESS

4. GENERAL OPERATION

4. 1 . Overview of Operation

4. 2. Operation

4. 2. 1. Warming-up

4. 2. 2. Standby state (ready for copying)

4. 2. 3. Cassette feed copying with [ST ART] key ON

4. 2. 4. Bypass copying

4. 2. 5. Interrupt copying

4. 3. Abnormality Detection

4. 3. 1. Abnormality classification

4. 3. 2. Abnormality description

4. 4. Flow Chart

4. 4. 1 . Power ON to ready

4. 4. 2. Automatic feed copying

4. GENERAL OPERATION

4. 1. Overview of Operation

Copier operation Operation during warming-up, pre-running and standby

Automatic f eed copying by pressing [ST AR T] key

Copying operation Bypass copying

Interrupt copying

4. 2. Operation

4. 2. 1. Warming-up

(1) Initialization

• Power turned ON

• IH coil turned ON

• Set number “1” and “WAIT W ARMING UP” displayed

• Fan motors turned ON

• Scanning section initialization ~Carriage moving to home position and stopping there ~Carriage moving to peak detection position ~Exposure lamp turned ON ~ P eak detection (White color is detected b y the shading correction plate.) ~ Exposure lamp turned OFF ~Carriage moving to home position

• Feed unit initialization ~Each cassette tray going up

• Writng section initialization ~Polygonal motor rotating ~Beam position controlled

• Other ~Main charger cleaner operating

(2) Pre-running operation

Pre-running operation is started when the temperature of the fuser roller reaches a certain temperature. (Pre-running is not carried out when the fuser roller has been already hot enough.)

• Fuser roller rotating

• Drum rotating ~Drum motor, used toner transport motor turned ON

• Image quality control ~Patch formed on drum and its reflective ratio read out to set an optimal condition.

(3 ) When fuser roller temperature becomes sufficient for fusing:

• IH coil turned OFF

• Set number “1” and “READ Y” displayed

JUNE 2002 © TOSHIBA TEC 4 - 1 e-STUDIO550/650/810 GENERAL OPERATION

4. 2. 2. Standby state (ready for copying)

• Keys on control panel enab led

• When no key is pressed f or a certain period of time: ~ Set number “1” and reproduction ratio “100%” displayed and copier returning to normal standby

state

4. 2. 3. Cassette feed copying with [START] key ON

(1) [START] key ON

• “READ Y” displa y changed to “COPYING”

• Main charger, de veloper bias and discharge lamp turned ON/Each fan rotating at a high speed

• Drum, transfer belt, fuser unit and developer unit rotating

(2 ) Cassette paper feeding

• Feed motor and feed clutch turned ON ~ Pickup roller, feed roller and tr ansport roller rotating

• Paper reaching transport roller ~Cassette transport sensor turned ON

• Feed clutch turned OFF after a certain period of time

• Paper reaching registration roller ~Registration sensor turned ON and aligning performed

• Feed motor stopping after a certain period of time

(3) Carriage operation

• Exposure lamp turned ON → White shading compensation is carried out.

• Scanning motor turned ON → Carriages 1 and 2 start to advance.

• Copier entering toner supply operation with developer material toner density being lower than pre-set

value

(4 ) In a certain time after carriage operation:

• Registration motor turned ON → Paper is sent to the transfer section.

• Copies counted

(5 ) In a certain time after registration motor is turned ON:

• T ransf er charger ON

(6 ) Carriage scanning termination

• Scanning motor turned OFF

• Exposure lamp turned OFF

• Registration motor turned OFF (after paper trailing edge has passed registration sensor)

e-STUDIO550/650/810 GENERAL OPERATION 4 - 2 JUNE 2002 © TOSHIBA TEC

(7) Paper discharging

• Exit sensor detecting passing of paper trailing edge

• Main charger, dev eloper bias and discharge lamp turned OFF

• Each operation of drum, transfer belt, fuser unit and developer unit stopping and each fan returning

to standby mode rotation

• “READY” displa yed and copier entering standby mode

JUNE 2002 © TOSHIBA TEC 4 - 3 e-STUDIO550/650/810 GENERAL OPERATION

536

1365

1423

1906

236

1365

250

3680

220

830

260 830

890

1790

1280

1830

1270

1780

260

3240

3330

430

260 4040

2980

2470

Timing chart for copying one A4 sized sheet fed from the 1st cassette

(ms)

Forward rotation

Reverse rotation

Scanner motor

Exposure lamp

Drum motor

1st cassette feed clutch

1st cassette feed sensor

Registration sensor

Registration motor

MVDEN signal

Main charger

Developer bias

Discharge lamp

Exit sensor

e-STUDIO550/650/810 GENERAL OPERATION 4 - 4 JUNE 2002 © TOSHIBA TEC

4. 2. 4. Bypass copying

(1) Paper inserted into bypass feed tra y.

• SFB feed sensor turned ON ~ “READY FOR BYPASS FEEDING” displa y ed

(2) [START] key pressed

• “READY FOR BYPASS FEEDING” displa y changed to “COPYING”

• Main charger, de veloper bias and discharge lamp turned ON/Each fan rotating at a high speed

• Drum, developer unit, transfer belt, and fuser roller rotating

(3 ) Sheet-bypass feeding

• Bypass pickup solenoid turned ON and feed motor rotating in reverse ~ Bypass pickup roller lowered

• Bypass feed clutch turned ON ~ Bypass feed roller, paper f eed roller , and separation roller rotating

• Aligning operation

• Paper reaching registration roller

• Bypass pickup solenoid, feed motor and bypass feed clutch turned OFF in a certain period of

time later

(4 ) Same operations as (3) through (6) of cassette feed cop ying with [START] k ey ON carried out

4. 2. 5. Interrupt copying

(1 ) [INTERRUPT] key pressed

• Interruption lamp turned ON

• Copying operation temporarily halted and carriages-1 and -2 returning to their home position

• “JOB INTERRUPTED JOB 1 SA VED” displa y ed

• Copying mode set to automatic density and 1-to-1 reproduction ratio and copy quantity indicator

unchanged

(2 ) Preferred copying modes specified

(3 ) After an interrupt copying is terminated:

• “PRESS INTERRUPT T O RESUME JOB 1” displayed

• Interruption lamp turned OFF/Copier returning to conditions before interruption when [INTERRUPT]

key is pressed again

• “READY TO RESUME JOB 1” displa yed

(4) [START] key pressed

• Back to copying operation before interruption

JUNE 2002 © TOSHIBA TEC 4 - 5 e-STUDIO550/650/810 GENERAL OPERATION

4. 3. Abnormality Detection

When an abnormality occurs in the copier, a symbol corresponding to the type of the abnormality is displayed to dr aw the operater’s attention.

4. 3. 1. Abnormality classification

A) Abnormalities which can be cleared without resetting the door switch

(1) Add paper (2 ) Paper misf eed in bypass (3) Set key copy counter

B) Abnormalities which cannot be cleared without resetting the door switch.

(1 ) Misfeed in copier (2 ) Developer unit not installed properly (3 ) Add toner

C ) Abnormalities which cannot be cleared without turning OFF the main switch

(1 ) Call for service

4. 3. 2. Abnormality description

A-1) Add paper

Empty sensor detects the presence or absence of paper. [When cassette is not installed]

No Cassette detected

훹

Tray not going up (empty sensor OFF)

훹

“Add paper” displayed

훹

[START] key disabled

[When cassette is installed] Cassette detected

훹

Tray going up (empty sensor OFF)

훹

“Add paper” displayed

훹

[START] key disabled

e-STUDIO550/650/810 GENERAL OPERATION 4 - 6 JUNE 2002 © TOSHIBA TEC

• When power is turned ON or feed unit initializing is operated:

↓

Presence or absence of paper detected Tray motor ON ~ Tray going up

When tray-up sensor is not turned ON within a certain period of time: T ra y being abnormal “Add paper” displayed regardless of paper being present

↓

or not

↔

Turn ON and OFF the power to clear this condition.

When tray-up sensor is turned ON within a certain period of time: ~ Tray motor stopping

At this time, if empty sensor is ON ~ Determined there is a paper

   

if empty sensor is OFF ~ Determined there is no paper



↓

“Add paper” display blinked

• When the remaining sheets of paper are getting short during copying: →Tray-up sensor turned OFF → Tray-up motor turned ON ~ Tray going up →Tray-up sensor turned ON → Tray motor stopping

• When empty sensor is turned OFF despite tray-up sensor being ON during copying:

↓

Determined there is no paper

↓

“Add paper” display blinked

↓

Copying stopped

JUNE 2002 © TOSHIBA TEC 4 - 7 e-STUDIO550/650/810 GENERAL OPERATION

A-2) Bypass misfeed ( )

• When doing a bypass feeding:

Bypass feed pickup solenoid turned ON

↓

Registration sensor turned ON * When the registration sensor is not turned ON after a certain period of time (E12):

↓

Bypass misfeeding

↓

“Clear paper” symbol ( ) displayed

↓

Copying operation disabled

Solution: Remove paper from the bypass tray, and the bypass sensor will be turned OFF.

A-3) Set key copy counter

• When the key copy counter (optional) is pulled out from the copier which installs it: “Set key copy counter” displayed

↓

Copying operation disabled

• When the counter is pulled out during copying: Copying is stopped when the key copy counter is pulled out.

e-STUDIO550/650/810 GENERAL OPERATION 4 - 8 JUNE 2002 © TOSHIBA TEC

B-1) Misfeed in copier ( )

• Paper leading edge jam detected by e xit sensor Registration motor turned ON

↓

Exit sensor not turned ON within 0.975 sec.

↓

“Clear paper” symbol ( ) displayed (E01)

↓

Copying stopped

Registration

motor

Exit sensor

Timer

0.975sec.

• Paper trailing edge jam deteced by exit sensor Registration motor OFF

↓

Exit sensor not turned OFF within 0.952 sec.

↓

“Clear paper” symbol ( ) displayed (E02)

↓

Copying stopped

• Immediately after power is turned ON:

↓

Any of all sensors at transport path detecting paper (ON)

↓

“Clear paper” symbol ( ) displayed (E03)

• Front cover opened during copying

↓

“Clear paper” symbol ( ) displayed (E41)

Registration

motor

Exit sensor

Timer

Misfeed in copier (E01)

OFF

Misfeed in copier (E02)

0.952sec.

• Paper leading edge jam detected by registration sensor Registration sensor not turned ON within a certain period of time after paper leading edge has passed transport roller

↓

“Clear paper” symbol ( ) displayed (E20, 22, 25, 30, 34, 3C)

• When a sheet of paper is fed at reverse section: Registration sensor not turned ON within a certain period of time after reverse motor has been turned ON

↓

“Clear paper” symbol ( ) displayed (E11)

JUNE 2002 © TOSHIBA TEC 4 - 9 e-STUDIO550/650/810 GENERAL OPERATION

• When a sheet of reversed paper is transported: Transport sensor 1 not detecting paper in a certain timing

↓

“Clear paper” symbol ( ) displayed (E51, 52, 53, 54)

• When a sheet of paper is fed: Feed sensor not turned ON after feed clutch has been turned ON

↓

“Clear paper” ( ) symbol display ed (E13, 14, 15, 16, 18, 19: Error codes change depending on the cassette used.)

B-2 ) Add toner ( )

Toner density lowered

↓

Toner empty detected: Auto toner sensor

↓

Control circuit “Replace toner cartridge” symbol ( ) displayed: Cop ying cannot be started.

↓

Solution: Open the front cover and replace the toner cartridge.

Toner supply operation: copying can be started.

B-3) Replace toner bag ( )

Toner bag becoming full with used toner

↓

Used toner transport auger moving to feed side: Toner bag full detection sensor ON

↓

“Replace toner bag” symbol ( ) displayed

• T oner bag full detection sensor turned ON during copying

↓

Copying stopped after the last sheet copied has been discharged Solution: Replace to a new toner bag by a service technician.

B-4 ) Developer unit not installed properly

Developer unit desconnected

↓

“Developer unit not installed properly” displayed Solution: Connect the de v eloper unit connector and close the front cov er .

C-1) Call for service

When the [CLEAR] and “8” keys are pressed simultaneously when the “Call for service” symbol is blinking, an error code appears on the message display. For the contents of the error codes, ref er to the “SER VICE HANDBOOK”.

e-STUDIO550/650/810 GENERAL OPERATION 4 - 10 JUNE 2002 © TOSHIBA TEC

4. 4. Flowchart

4. 4. 1. Power ON to ready

Restart

Main SW ON

DC power supply ON

YES

Is cover opened?

IH coil ON

· Scanner motor ON

· Cassette tray-up motor ON

Is registration sensor ON?

Is exit sensor ON?

(Start initializing)

YES

Is transport

YES

sensor 1 ON?

JUNE 2002 © TOSHIBA TEC 4 - 11 e-STUDIO550/650/810 GENERAL OPERATION

Jam

"E03"

Polygonal motor rotating Scanning section initialization

Is toner full detection sensor ON?

Is toner empty?

YES

Toner supply

Is initialization finished?

YES

Drum motor ON for 6 sec.

Is toner full detection sensor ON?

Have 20sec. passed after initialization started?

YES

Call for service

(used toner full clear operation)

YES

T oner bag replacement

Is fuser roller temperature high enough to start pre-running?

YES

Pre-running started

Is fuser roller temperature high enough to be ready?

YES

Pre-running finished

Ready

"C26"

Is thermistor cut down?

YES

NO NO NO

Is heater cut down?

YES

polygonal motor NG?

YES

Call for service Call for service Call for service

"C41" "C44" "CA1"

e-STUDIO550/650/810 GENERAL OPERATION 4 - 12 JUNE 2002 © TOSHIBA TEC

4. 4. 2. Automatic feed copying

Press [START] key

Developer bias ON Fuser motor ON Main charger ON Developer unit motor ON Discharge lamp ON T ransfer belt motor ON Drum motor ON Used toner transport motor ON Recycle toner transport motor ON

Process system control

Is polygonal motor ON?

YES

Laser ON

T ransf er belt bias ON

T ransf er belt bias OFF

Transport system control

Call for service

"CA1"

Intermediate transport clutch ON

Intermediate transport clutch OFF

Registration motor ON

Drum separation finger solenoid ON

Scanning system control

Exposure lamp ON

Carriege moving forward

Carriage stopped

Exposure lamp OFF

Drum separation finger solenoid OFF

Is H-sync OK?

Registration motor OFF

Carriage moving

Call for service

"CA2"

remaining set number

Laser OFF

Is 0?

YES

remaining set number

fuser unit exit sensor ON?

Is 0?

YES

backward

Carriage stopped

Scanning system control finished

Paper jam

"E01"

Process system control finished

JUNE 2002 © TOSHIBA TEC 4 - 13 e-STUDIO550/650/810 GENERAL OPERATION

Paper jam

"E02"

Is fuser unit exit sensor ON?

YES

Main charger OFF Discharge lamp OF F Developer bias OF F Drum motor OFF Transfer belt motor OFF Fuser motor OFF Developer unit motor OFF Recycle toner transport motor OFF Used toner transport motor O FF

Drum reversed

Standby

e-STUDIO550/650/810 GENERAL OPERATION 4 - 14 JUNE 2002 © TOSHIBA TEC

5. CONTROL PANEL

5. 1. Control Panel and Display Panel

5. 2. Items Shown on Display Panel

5. 2. 1. Display during normal copying

5. 2. 2. Display in abnormal condition

5. 3. Relation between Copier State and Operator's Action

5. 4. Operation

5. 4. 1. Dot matrix LCD circuit

5. 4. 2. LED display circuit

5. 5. Disassembly and Replacement

5. CONTROL PANEL

5. 1. Control Panel and Display Panel

The display unit consists of key switches and touch-panel switches to operate the copier and select various modes, and LEDs and an LCD to display the state of the copier or the messages. When the operator’s attention is reguired, g raphic symbols appear with messages explaining the condition of the copier in the LCD panel.

Control Panel Exterior View

JUNE 2002 © T OSHIBA TEC 5 - 1 e-STUDIO550/650/810 CONTROL P ANEL

5. 2. Items Shown on Display Panel

Fig. 5.2-1

Fig. 5.2-2

e-STUDIO550/650/810 CONTROL PANEL 5 - 2 JUNE 2002 © TOSHIBA TEC

5. 2. 1. Display during normal copying

No. Message

1 WAIT W ARMING UP

2 READY(WARMING

UP)

3 READY

4 COPYING

5 Saving energy

- Press [START]

6 Place next original

Press [START] to copy

7 —

8 READY (PRINTING)

9 READY

(ADD PAPER)

10 READY

(FINISHER FULL)

11 READY

(HOLE PUNCH DUST FULL)

State of copier

Scanner warming up

- Displayed when the power is turned ON until the copier becomes ready to start scanning.

Ready for scanning

- The copier is ready for scanning and waiting for operator to select the copying conditions.

- Returns to default setting if no key is operated within 45 seconds.

Ready for copying

- The copier is ready for copying and waiting for the operator to select the copying conditions.

- Returns to default setting if no key is operated within 45 seconds.

The original is being scanned

- Displayed by pressing the [START] key.

The copier is in the energy saver mode.

Ready for the next original

- Displayed by pressing the [Next original; YES] key.

Pow er is OFF

- Nothing is displayed in the display panel.

- Timer LED is lit.

Ready for scanning

- The copier is ready for scanning and waiting for the operator to select the copying conditions.

Background printing is in progress. Ready for scanning

- The copier is ready for scanning and waiting for the operator to select the copying conditions.

Paper in the cassette has run out during printing. Ready for scanning

- The copier is ready for scanning and waiting for the operator to select the copying conditions.

The finisher is full of paper. Ready for scanning

- The copier is ready for scanning and waiting for operator to select the copying conditions.

The punching dust box is full.

Note

- The set number “1” and the reproduction ratio “100%” are displayed when the power is turned ON.

- The set n umber “1” is display ed. Press the digital key to change the number.

- The number is reset to “1” by pressing the [CLEAR] key.

- Bypass feed copying is enabled.

- The set n umber “1” is display ed. Press the digital key to change the number.

- The number is reset to “1” by pressing the [CLEAR] key.

- Bypass feed copying is enabled.

- After scanning is completed, the copier becomes ready for the next scanning.

- Can be cleared by pressing the [START] key, function select key.

- Displayed for SADF and manually placed originals.

- Press the [START] key or function select key.

- Since background printing is in progress, the scanned image is not output immediately.

- Printing is resumed by adding paper to the cassette.

- Printing is resumed by removing paper from the finisher.

- Printing is resumed by removing punching dust from the dust box.

No. Message

12 READY

(SADDLE STITCH TRAY FULL)

State of copier Note

Ready for scanning

- The copier is ready for scanning and waiting for the operator to select the copying conditions.

The saddle stitcher is full of paper.

Printing is resumed by removing paper from the saddle stitcher unit.

13 READY

(SET CORRECT CASSETTE)

14 READY (ADDING

TONER)

15 READY (CHECK

STAPLER)

16 READY (CHECK

SADDLE STITCH STAPLER)

17 READY (USE

GENUINE TOSHIBA TONER)

18 ENTER DEPART-

MENT CODE

19 READY (ADD

INSERTER PAPER)

20 READY (ADD TAB

SHEET)

21 READY (FINISHER

IN USE)

Ready for scanning

- The copier is ready for scanning and waiting for the operator to select the copying conditions.

Cassette not installed during printing Ready for scanning

- The copier is ready for scanning and waiting for the operator to select the copying conditions.

The receiving tray is full of paper. Ready for scanning

- The copier is ready for scanning and waiting for the operator to select the copying conditions.

The finisher unit runs out of the staples. Ready for scanning

- The copier is ready for scanning and waiting for the operator to select the copying conditions.

The saddle stitcher unit runs out of the staples.

Ready for scanning

- The copier is ready for scanning and waiting for the operator to select the copying conditions.

Toner other than Toshiba’s has been used. The copier is waiting for the operator to

enter the department code.

- Displayed when the department management function has been used

Ready for scanning

- The copier is ready for scanning and waiting for the operator to select the copying conditions.

No inserter paper Ready for scanning

- The copier is ready f or scanning and waiting for the operator to select the copying conditions.

No tab paper Ready for scanning

-The copier is ready for scanning and waiting for the operator to select the copying conditions.

Finisher manual operating

- Printing is resumed by changing the setting for cassette selection, then pressing the [START] key.

- Printing is resumed automatically when the toner supply is completed.

- Printing is resumed automatically when the staple cartridge is replaced with a new one.

The display is made to disappear by using the toner provided by Toshiba.

The copier becomes ready to start copying when the correct department code is entered.

Printing is resumed when the [START] key is pressed under the condition the printing UI is displayed ([JOB STATUS] key pressed) after adding inserter paper.

Printing is resumed when the [ST AR T] key is pressed under the condition the printing UI is displayed ([JOB STA TUS] key pressed) after adding

tab paper. Printing is started when pressing the [START] key.

5. 2. 2. Display in abnormal condition

No. Message

1 Add paper

2 Add toner

Press [HELP]

3 Set key copy

counter

4 Paper misfeed in

bypass

5 Misfeed in copier

Press [HELP]

6 Misfeed in copier

Press [HELP]

Abnormal state and indication on display panel

Paper run out [Fig.5.2-1 A]

- The cassette with no more paper flashes. Toner r un out [Fig.5.2-2 B]

- The toner cartridge is empty.

- The message is displayed and the copier is stopped.

Key copy counter not installed [Fig.5.2-1 C]

- The key copy counter was pulled out when copier was ready for scanning.

- The copier is stopped when the key copy counter is pulled out after the [START] key was pressed.

Bypass paper jam [Fig.5.2-2 D]

- Paper jam at the bypass tray

Paper jam in the copier [Fig.5.2-2 E]

Misfeeding of cassette paper [Fig.5.2-2 F]

- Paper fed from the cassette does not reach the feed sensor in a fixed time.

Solution

- Add paper to the cassette.

- Select a different cassette.

- Replace the toner cartridge and close the front door.

- Insert the key copy counter (option).

- Remove the paper from the bypass tray.

- Press the [HELP] key and remove the paper following the messages shown on the display panel.

7 Misfeed in doc.

feeder Press [HELP]

8 Misfeed in finisher

Press [HELP]

9 Misfeed in

INSERTER

10 Call for service

11 Time for periodic

maintenance

12 Check paper in LCF

13 —

14 Select the same

sized Tab sheets as the originals

Original jam [Fig.5.2-2 G]

- Original jamming in RADF

Paper jam in the finisher [Fig.5.2-2 H]

Paper jam in the inserter [Fig.5.2-2 I]

Motors, sensors, switches, etc. do not work properly. [Fig.5.2-2 J]

PM cycle

- Time for maintenance

- Copying is possible. Paper misloading in the tandem LCF

- Displayed when a paper is set out of alignment Toner bag full

- The toner bag is full of used toner. The copier stops its operation. [Fig.5.2-2 K]

Displayed when the paper sizes for the tab sheets and originals are different

- Open the jam-access cover and RADF unit to remove the original.

- Press the [HELP] key and remove the paper following the messages shown on the display panel.

- Turn OFF the power and solve the problem, then turn ON the power again.

- Maintenance and inspection are performed by a qualified service technician.

- Set the paper correctly.

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

- Select the same size for tab sheets and originals.

No. Message

15 Select the same

sized Inserter sheets as the originals

Abnormal state and indication on display panel Solution

Displayed when the paper sizes for inserter paper and original are different

- Select the same size for the inserter sheets and originals.

16 Set Tab sheets in the

same direction as the originals

17 Set Inserter sheets in

the same direction as the originals

18 Only one paper

source can be used with Cover Sheet feature.

19 Only two paper

sources can be used with Sheet Insertion feature.

20 ADD PAPER TO

INSERTER FEEDER

21 Set the paper source

for T ab sheet

22 Cannot use OHP

Displayed when the paper directions for tab paper and original are different

Displayed when the paper directions for inserter paper and original are different

Displayed when both the cover mode and inserter cover mode are selected

Displayed when all the sheet insertion mode, tab insertion mode and inserter sheet insertion mode are selected

Displayed when the inserter mode is valid and the [START] key is pressed without papers on the tray

Displayed when the tab paper mode is valid and the tab cassette is not selected

Displayed when the paper is OHP and duplex printing is carried out

- Set the tab sheets in the same direction as the originals.

- Set the inserter sheets in the same direction as the originals.

- Release either the cover mode or inserter cover mode.

- Release any of three modes

- Release the inserter mode

- Set papers on the inserter tray

- Select the 2nd cassette property to the tab to release this state.

- The display is released when either the setting for OHP or for dupulex printing is released.

23 Wait Saving f orm

24 Fuser cleaning web

decreased

25 Time for periodic

maintenance (Fuser cleaning web)

26 Tab size: A4/LT only

27 Please divide and set

the documents which is loading over

28 Service

recommended for SPC

Displayed during inputting the form combination original

Displayed when the fuser unit cleaning web gets decreased

* This message is set not to be displayed

at shipment, but the setting can be changed at the setting mode (08-938).

Displayed when the fuser unit cleaning web gets run out

Displayed when the tab paper mode is valid and other than A4/LT is selected for the tab paper size

Displayed when originals on the RADF are loading over

Displayed when the surface potential control error occurs

- The display is released when the saving has finished.

- Replace the cleaning web.

- Select A4 or LT for tab paper.

- Remove originals from RADF.

- The condition is released when the surface potential control has finished normally.

5. 3. Relation between Copier State and Operator’s Action

STOP

JOB ST A TUS

---

Function select

Bypass Touch

ENERGY SA VER

INTERRUPT

-------

----

Operation START CLEAR Digital Cassette

State of copier key key keys s el e ction key key feeding panel key key key

Scanner warming up

Printer warming up

Ready for copying

Printing

Scanning -

Paper run out

T oner empty

Key cop y counter not inserted -

(optional)

Paper misfeed in bypass copying -----------

Paper jammed inside the machine -----------

Service call indicated -----------

Ready for interrupt copying

In energy saver mode

Power OFF

: Operation enabled - : Operation disabled

Manual operating

5. 4. Operation

5. 4. 1. Dot matrix LCD circuit

(1 ) Structure

(320 x 240)

The DSP-LCD-320 is an STN blue mode transmissive type LCD with a 320 x 240-dot display capacity. It consists of a driver LSI, frame, printed circuit board, and lateral type CFL backlight. * STN:Super Twisted Nematic

(2 ) Block diagram

XSCL

UD0 UD1 UD2 UD3

IC2

LCD PANEL

IC3 IC4

LCDEN

IC5

IC6

IC1

80 80 80 80

320 x 240 DOTS

VDD GND V0 VEE

Power supply

IC7

(3 ) LCD drive operation The following describes the drive operation to displa y the message “READY”.

PWA-F-SYS-300

PWA-F-SYS-340

LCD

controller

(c)

System

CPU

R A M

(a)

PROM

(b)

(a) The System CPU requests the

PROM data to display “READY”.

(b) The PROM outputs data to display

the message to the System CPU.

be displayed on the LCD into the RAM.

(d ) The LCD controller/driver reads the

display data from the RAM, and outputs the data to the LCD .

LED

driver

(d)

LED

PWA-F-DSP-300

PWA-F-DSP-340, PWA-F-MKEY-340, PWA-F-SKEY-340

LCD

KEY CPU

Key switches

and

touch panel

(4 ) Data transmission

FRAME

240 1 2 240

LOAD

FRAME

1/tF1/tF

240

LOAD

D0-D3

CP x(320/4) pulses

5. 4. 2. LED display circuit

(1 ) Method of LED display

ex) Displaying “COPY”

5VL

LDON0

"L"

Current

(COPY)

LED4

"L" 17

IC8(7932)

The transistor is turned ON when the LDON 0 signal becomes “L” le vel. Also, when IC8-17pin (D7) changes to “L”, the current flows from 5VL via the transistor to LED4 (“COPY”) to turn ON LED4 (“COPY”).

Conditions to turn ON the LED (a ) The transistor (Q3) connected to the LED anode is ON. (b) The output from the cathode side of the LED is “L” lev el.

The LED is turned ON when (a) and (b) are satisfied.

5. 5. Disassembly and Replacement

[A] Control panel unit (1 ) Open the front cover and take off the front side

right inner cover , toner cartridge drive unit and toner recycle unit.

(2 ) Remove 2 screws and take off the control panel

bottom cover.

Control panel bottom cover

(3 ) Disconnect 3 connecters, remove 2 screws,

release harnesses from 2 clamps and take off the control panel unit.

(4 ) Remove 10 screws, disconnect 2 connectors

and release the braket after disconnecting 1 connector at the counter.

Clamp

Connector

(5 ) Disconnect 7 connectors, remove 6 screws and

take off the DSP board.

Connector

DSP board

Connector

(6 ) Remove 9 screws and take off the MKEY board. (7 ) Remove 8 screws and take off the SKEY board. (8 ) Remove 4 screws and take off the LCD panel.

MKEY board

LCD panel

SKEY board

6. SCANNING SECTION

6. 1 . Function

6. 2. Construction

6. 3. Operation

6. 3. 1. Scanner motor

6. 3. 2. T wo-phase motor drive circuit (fixed-current type)

6. 4. Control for Exposure Lamp

6. 4. 1. General description

6. 4. 2. Exposure lamp

6. 4. 3 . Control circuit for exposure lamp

6. 5. CCD control

6. 5. 1. Opto-electronic conversion

6. 5. 2. Shading correction

6. 6. Automatic Original Size Detection Circuit

6. 6. 1. Principle of original size detection

6. 6. 2. Process of original size detection

6. 7. Disassembly and Replacement

6. SCANNING SECTION

6. 1. Function

In the scanning section of this copier, the surface of an original is irradiated with a direct light and the reflected light is led through mirrors and lens to the CCD where the optical-to-electrical conversion is performed, converting the optical image data into an electrical signal. This analog signal is changed to a digital signal, and then undertakes various corrective processes necessary for image formation. After that, an arithmetic operation is performed on the digital signal, which is then sent to the data writing section.

Exposure lamp Carriage-1 Drive pulley

Reflector

Shading correction plate

Rail for carriage-1 Original glass

Carriage-2

Lens

Rail for carriage-2

CCD sensor

CCD board

SLG board

6. 2. Construction

The construction and purpose of the scanning system are described in this section.

(1 ) Original glass This is the glass on which originals to be copied are placed. The light from the e xposure lamp is irradiated to the original through this glass.

(2) Carriage-1 The carriage-1 consists of the exposure lamp, lamp inverter, reflector, mirror-1, etc. It is driven by the scanner motor and scans the original on the glass.

a. Exposure lamp

This lamp is the light source to irradiate the original on the glass (one 29W Xenon lamp).

b . Lamp inverter

This inverter controls lighting of the Xenon lamp.

c. Reflector

This is a plate to direct the light from the exposure lamp efficiently to the surface of the original on the glass.

d. Mirror-1

This is a mirror to direct the reflected light from the original to the mirror-2 that is described later.

Original glass

Exposure lamp

Original

Reflector

Mirror-1

(3) Carriage-2 The carriage-2 consists of mirror-2, mirror-3, etc. and directs the reflected light from the mirror-1 through mirrors-2 and -3 to the lens. This carriage-2 is driven by the scanner motor as the carriage-1, at half the scanning speed of carriage-1 (the scanning distance is also half of carriage-1).

(4 ) Lens unit The light reflected from mirror-3 is led to the CCD placed at the focal point of the lens which is fixed in position.

(5) CCD board Processes such as the signal amplification, signal integration, A/D conversion and shading correction are applied on the electrical signal which has been converted by the CCD .

(6 ) Automatic original detection sensor The size of the original placed on the glass is instantly detected using the automatic original detection sensors (APS sensor) fixed on the base frame without carriage-1 having to move.

6. 3. Operation

2GT-Z24

6. 3. 1. Scanner motor

Carriage-1Carriage wireScanner motor Pulley for carriage-2

Ø20

Motor pulley

2GT-Z24

Wire pulley

Ø30.83／2GT-Z84

Idler pulley

Ø20

Carriage-2

(a ) Scanning original on original glass

This motor drives the carriages-1 and -2 through the timing belt and carriage wire. The scanner motor first drives carriages-1 and -2 to their respective home positions. The home positions are detected when carriage-1 passes the home position sensor. When the [START] key is pressed, both carriages start to move and scan the original on the glass.

(b ) Scanning original on RADF

Carriage-1 stays at the shading position during the shading correction, and at the scanning position during the scanning operation.

6. 3. 2. Two-phase motor drive circuit (fixed-current type)

The scanner motor with the unipolar fixed current chopper method is driven by the stepping motor driver STK672-080 (IC4).

PG 1

5 4 3 2

Vcc2 Vref A AB B BB

SUB

Switching

current

fraction ratio

Generation

of pseudo

sine wave

Generation of phase

excitation signal

6 7

Excitation

mode setting

Phase

counter

Switching pulse

ON/OFF detection

Excitation

status monitor

PWM control

Generation of

reference clock

CR oscillation

CWB

CLOCK

RESET

Mol

ENABLE

PWA-F-SLG

Scanner CPU

SCNREF-0A

SCNEN-0

SCNRST

SCNDIR-0

SCNCLK-0 SCNMD1-0

SCNMD2-0 SCNMD3-0

Motor driver

1 2 3 4 5 6

SCN-MOT

321

IC9

Input signals

SCNCLK-0 CLK input Input

SCNDIR-0

SCNEN-0

SCNREF-0A

SCNMD1~3-0

SCNRST Reset Input

Sets the direction of motor rotation

Cuts OFF the drive output

Voltage to set value for the motor current

Sets the exicitation mode (1)–(3)

Input

IC4

+36V

Circuit diagram

The motor is rotated by setting the number of pulses. * The internal circuit of the motor driver works at the rising and falling edge of pulse.

The direction of the motor rotation is determined by the setting level of signal

“H”…Clockwise direction (as seen from the output shaft) “L”…Counterclockwise direction (as seen from the output shaft) Note: When SCNMD3-0 is “L”, do not change the rotation direction

within 6.25µs before and after the rising and falling edge of the pulse of SCNCLK-0.

“H” …Normal operation (The motor has been excited.) “L”…Excitation drive output is forcibly shut OFF (the motor has not been excited).

Motor wire current value is set in the range of 0 to 2.25 (A)/phase by applying the analog voltage 0 to 5 (V).

Sets the excitation mode. Note: Do not change the setting wihin 5µs before and after the

rising and falling edge of the pulse of SCNCLK-0.

Internal circuit of the driver is initialized by setting the motor to “L” level (pulse interval: 10µs or more). The motor drive circuit is automatically reset when the power is turned ON.

6. 4. Control for Exposure Lamp

6. 4. 1. General description

Control circuit of the exposure lamp consists of the following 3 blocks. (1 ) Lighting device for the Xenon lamp (Inv erter)

Turns the exposure lamp ON/OFF.

(2 ) CCD sensor circuit

This circuit works to the convert the reflected light amount from the original surface and the shading correction plate to the electrical signals. The reflected light amount from the shading correction plate is read to control the exposure amount.

(3 ) Image processing circuit

The output signals from the CCD are digitized and the image processing such as gamma correction and shading correction is applied to them.

PWA-CCD

Original

Shading correction plate

Exposure lamp (Xenon lamp)

CCD sensor

PWA-CCD

A/D

Image processing circuit

Construction of exposure lamp control circuit

Lighting device for Xenon lamp

(Inverter)

PWA-SLG

Scanner

Main CPU

CPU

IC37

6. 4. 2. Exposure lamp

External electrode type Xenon fluorescent lamp is used as an exposure lamp in this copier . (1 ) Structure

The fluorescer is applied to the inside surface of the lamp pipe (except for a part which serves as an opening) which is filled with the Xenon gas. A pair of the external electrodes covered by film with adhesive agent is attached around the pipe.

PET film

Aluminum tape electrode

Adhesive agent

Fluorescer

Xenon gas

Glass valve

(2 ) Behavior inside the lamp The electron inside the pipe is led to the electric field by applying voltage to the pair of the external electrodes, and the discharge is started. The electrons then flow and clash with the Xenon atoms inside the pipe to excite them and allow them to generate ultraviolet r ays. This ultraviolet rays con vert the fluorescer into visible light.

(6)

(5)

(7)

(1)Electrode (2)Electron (3)Xenon atom (4)Ultraviolet ray (5)Fluorescer (6)Visible light (irradiated from the opening to outside the pipe) (7)Opening (8)Harness

(2)

(4)

(3)

(1)

(8)

6. 4. 3. Control circuit for exposure lamp

P24

WDTOUT

P23

EXPON–0

WDTOUT–0 WDTEN–0

HCT00

IC16

+5V

HCT00

IC16

HC14 IC17

HCT00

IC16

D1:1SS184

Q3:RN2401

Scanner CPU

IC9

PWA–F–SLG–340

Working conditions

EXPON-0

WDTOU T-0 WDTEN-0

(Lamp drive signal)

+5VSW Q2 Xenon lamp State of copier

HH H ON OFF OFF HH L ON ON ON

LX X OFF OFF OFF

+5VSW

Q2:RN1401

EXPON–0A

Normal operation

Scanner CPU

Xenon lamp

Xenon lamp lighting device

overdriving

HL X OFF OFF OF F Call for Service

6. 5. CCD Control

6. 5. 1. Opto-electr onic conversion

A CCD (charge-coupled device) is used to produce an electrical signal corresponding to the reflected light amount from the original. The CCD is a one-chip opto-electronic con version de vice, comprised of se veral thousand light-receiving elements arranged in a line; each one of them is a few microns square. This model is equipped with a CCD which has 7,500 light-receiving elements. Each element of the light-receiving section consists of the semiconductive lay ers P and N. When the light irradiates the element, the light energy produces a (-) charge in the layer P; the amount of the charge produced is proportional to the energy and irradiating time. The charges produced in the light-receiving section are then sent to the transfer section where they are shifted by the transfer clock from left to right as shown in the figure below , and are finally output from the CCD . At this time , to increase the transfer speed of the CCD, image signals in the even-number and odd-number elements are separated and output in parallel via two channels.

Transfer section

Light receiving

section

Transfer section

Shift register

Transfer clock

7497 7498 7499 7500

Transfer clock

Light energy

layer N layer P

Details of light receiving element

[Principle of the opto-electronic conver sion by CCD]

6. 5. 2. Shading correction

Signal voltages read by the CCD have the following characteristics.

(1 ) Light source has variation in its light distribution. (2) Since the light beam reflected from the original is converged using a lens, the light path is the

shortest at the center of the CCD and the longest at ends. This causes difference in the amount of light reaching the CCD (i.e. the light amount is maximum at the CCD center, gradually decreases toward ends).

(3 ) Each of the 7,500 elements varies in the opto-electronic conversion efficiency.

These variations need to be corrected and this correction is referred to as shading correction. Based on the black and white data obtained in advance, a normalization process using the following formula is applied to the raw image data to correct lighting variance and element variation of the image data.

I = k ×

(S — K)

(W — K)

k : Coefficient S : Image data before correction K : Black data (stored in “black” memory) W : White data (stored in “white” memory)

6. 6. Automatic Original Size Detection Circuit

This circuit detects the size of original (standard sizes only) using the reflection type photosensors arranged on the base frame of the scanner unit.

6. 6. 1. Principle of original size detection

The reflection type photosensors are placed on the base frame of the scanner unit as shown in the Fig. 6.6-

1. Each sensor consists of an infrared light emitting diode (LED) on the light emitting side, and a phototransistor on the light receiving side. When there is an original on the original glass, light beams from the LEDs are reflected by the original and led to the phototransistors. This means that the size of the original is detected by checking which phototransistors are turned on or are not.

[A4 Series]

Original

APS-4

Original glass

APS-5

[LT Series]

Original glass

Original

APS-5

APS-4

APS-2 APS-3

APS-1

APS-3APS-2

Fig. 6.6-1

6. 6. 2. Process of original size detection

(1 ) When the copier is in the original size detection mode, the carriage-1 is set at its home position. (2) When the RADF is opened, the sensors receive the light reflected from the original and if one of the

matrix conditions shown in (4) for original sizes is satisfied, the size of the original is instantly detected.

(3 ) The output signal from each sensor is input to the CPU on the scanner control PC board to determine

the size of the original.

APS-5

P81

[LT Ser ies][A4 Series]

APS-5

P81

P80

P96

P95

P94

PWA-SLG

GND

Reflection type photosensor

APS-4

APS-3

APS-2

P80

P96

P95

PWA-SLG

GND

Reflection type photosensor

APS-4

APS-3

APS-2

APS-1

Fig. 6.6-2 Original size detection circuit

[A4 Series]

A5 B5 A4

APS-5

[LT Series]

APS-4

APS-3

APS-1

APS-2

ST LT

A5–R

B5–R

A4–R

APS-4

APS-5

ST–R

APS-3

LT–R

APS-2

Fig.6.6-3 Sensor detection points

(4 ) Original size is determined by the combination of the presense/absence of signals which are output at

each detection point. The combination chart for size determination of A4 series and LT series are as followed.

[A4 Series]

Size APS-1 APS-2 APS-3 APS-4 APS-5

A300000 A400001 B400010 B510011

A4-R 0 0 1 1 0

A510111 B5-R 0 1 1 1 0 A5-R 0 1 1 1 1

[LT Ser ies]

Size APS-2 APS-3 APS-4 APS-5

LD 0 0 0 0

LT 0 0 0 1

LG 0 0 1 0

LT-R 0 0 1 1

ST 1 0 1 1

ST-R 0 1 1 1

Code

1 H Absent 0 L Present

* When the APS operation sensor is OFF;

• The following points are determined by the output signals from APS sensors Size (The combination of the signals satisfy the above chart)

Size retention (The combination of the signals do not satisfy the above chart) No original (output from all the sensors are “1”.)

• Size change is always observed and detected.

• Carriage-1 stays at the standby position even if the reproduction ratio changes corresponding to the change of the original size.

* When the APS operation sensor is ON;

Retains the latest original size (or no original state) recognized right before the APS operation sensor is turned ON regardless of the state of the APS sensor output signals.

Output signal

: Size is displayed on the control panel and an appropriate paper and reproduction ratio are selected.

:Retains the latest original size recognized (or no original state) until a new paper size is recognized. :Reproduction ratio and paper size are not selected.

Original

About reflection type photosensor The reflection type photosensor is comprised of an infrared light emitting diode and a phototransistor . It uses the pulse modulation to detect an original.

Original

8µsec

130µsec

LED

Phototransistor

The light emitting diode is driven by a pulse having a 130-µsec cycle and an 8-µsec ON time . When the phototransistor receives the same signal as this pulse, it is determined that there is an original. The pulse modulation is performed inside the reflection type phototransistor .

6. 7. Disassembly and Replacement

[A] Original glass (1) Take off the right top cover.

(2) Remove 2 screws and take off the glass retainer . (3) Lift the feed side of the original glass and tak e it

off toward the f eed side.

Glass retainer

[B] Lens cover (1) Remov e the original glass.

(2) Remov e 9 screws and take off the lens cover.

(Disconnect 1 connector of APS sensor at this time.)

[C] Automatic original detection sensor (APS sensor) (C-1) A4 series (1) Remov e the original glass.

(2) T ak e off 4 APS sensors each with disconnecting

1 connector and removing 1 screw.

Lens cover

APS sensor

(3) Remove the lens co ver.

APS sensor

(4) Remove 2 scre ws and take off the APS sensors

with brackets .

(5) Remove 1 scre w and release the APS sensors

from the brack ets.

(C-2) LT series (1) Remov e the original glass.

(2) T ak e off 3 APS sensors each with disconnecting

1 connector and removing 1 screw.

(3) Remov e the lens cover. (4) Remov e 1 screw and tak e off the APS sensors

with brackets .

(5) Remov e 1 screw and release the APS sensors

from the brackets .

APS sensor

[D] SLG fan motor (1) Remov e the lens cover.

(2) Disconnect 1 connector, remove 2 screws and

take off the SLG fan motor.

[E] Exposure lamp (1) Move the carriages toward the exit side,

disconnect 1 connector of the exposure lamp and remove 1 scre w.

SLG fan motor

Connector

Toshiba DP8110, DP-5510, DP6510, 810, 550 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

GENERAL PRECAUTIONS REGARDING THE INSTALLATION AND SERVICE FOR THE COPIER e-STUDIO550/650/810

1. SPECIFICATIONS / ACCESSORIES / OPTIONS / SUPPLIES

1. 1. Specifications

1. 2. Accessories

1. 3. Options

1. 4. Supplies

1. 5. System List

2. OUTLINE OF THE MACHINE

2. 1. Sectional View

2. 2. Electric Parts Layout

2. 3. Symbols and Functions of Various Components

2. 4. Symbols and Functions of RADF Various Components

2. 5. System Block Layout

2. 6. Disassembly and Replacement of Covers and PC boards

2. 6. 1. Covers

2. 6. 2. PC boards

3. COPY PROCESS

3. 1. General Description

3. 2. Details of Copy Process

3. 3. Comparison of Copy Process to 6570/5570

4. GENERAL OPERATION

4. 1. Overview of Operation

4. 2. Operation

4. 2. 1. Warming-up

4. 2. 2. Standby state (ready for copying)

4. 2. 3. Cassette feed copying with [START] key ON

4. 2. 4. Bypass copying

4. 2. 5. Interrupt copying

4. 3. Abnormality Detection

4. 3. 1. Abnormality classification

4. 3. 2. Abnormality description

4. 4. Flowchart

4. 4. 1. Power ON to ready

4. 4. 2. Automatic feed copying

5. CONTROL PANEL

5. 1. Control Panel and Display Panel

5. 2. Items Shown on Display Panel

5. 2. 1. Display during normal copying

5. 2. 2. Display in abnormal condition

5. 3. Relation between Copier State and Operator’s Action

5. 4. Operation

5. 4. 1. Dot matrix LCD circuit

5. 4. 2. LED display circuit

5. 5. Disassembly and Replacement

6. SCANNING SECTION

6. 1. Function

6. 2. Construction

6. 3. Operation

6. 3. 1. Scanner motor

6. 3. 2. Two-phase motor drive circuit (fixed-current type)

6. 4. Control for Exposure Lamp

6. 4. 1. General description

6. 4. 2. Exposure lamp

6. 4. 3. Control circuit for exposure lamp

6. 5. CCD Control

6. 5. 1. Opto-electr onic conversion

6. 5. 2. Shading correction

6. 6. Automatic Original Size Detection Circuit

6. 6. 1. Principle of original size detection

6. 6. 2. Process of original size detection

6. 7. Disassembly and Replacement