TOSHIBA 2060, 2860, 2870 SERVICE MANUAL

SERVICE MANUAL

PLAIN PAPER COPIER

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2060/2860/70

AUTOMATIC DUPLEXING UNIT

MD-5002

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GENERAL PRECAUTIONS REGARDING THE INSTALLATION AND SERVICE FOR THE COPIER 2060, 2860/70 AND THE AUTOMATIC DUPLEXING UNIT MD-5002

1. Transportation/Installation

• When transporting/installing the copier, use two persons and be sure to use the positions as indicated below. The copier is fairly heavy and weighs approximately 73 kg (161 lb), therefore pay full attention when handling it. (2870: 84 kg)

4 portions

2. Installation

• Be sure to use a dedicated outlet with AC 115V/15A (220V, 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 oper ation, keep a minim um clearance of 80 cm (32”) on the left, 80 cm (32”) on the right and 10 cm (4”) in the rear.

3. Service of Machines

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

• Be sure not to touch high-temperature sections such as the exposure lamp, the fuser unit, the damp heater and their periphery.

• Be sure not to touch high-voltage sections such as the chargers and the high-voltage tr ansformer .

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

• When servicing the machines with the main switch turned on, be sure not to touch live sections such as the lamp terminal, etc.

• Use suitable measuring instruments and tools.

4. 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.

5. Notice Labels

• Be sure to check the rating plate and the cautionary labels such as “Unplug the power cord during service”, “Hot area” etc. to see if there is any dirt on their surface or if they are properly stuck to the copier during servicing.

6. Disposition of Consumable Parts/Packing Materials

• Regarding the recovery and disposal of the copier, supplies , consumable parts and packing materials, it is recommended to follow the relevant local regulations or rules.

7. 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, toothed washers in the wrong places.

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

9. Precautions Against Static Electricity

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

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

1. SPECIFICATIONS • ACCESSORIES • OPTIONS • SUPPLIES

1.1 Specifications

Copy process Indirect electrophotographic process (dry) Type Desk top (console when the pedestal is used) Exposure Type Slit exposure with fixed table Acceptable originals Kind Sheets, books, and 3-dimensional objects.

When the document feeder is used: Sheet originals only (60 g/m2~90 g/m2) (16 lb.~24 lb.)

Maximum size A3 (Ledger)

Copy paper

Cassette Duplexing Manual Note

Size A3~A5-R A3~A6-R Adjustable to

(Ledger~Statement-R) Unfixed, Arbitary sizes Thickness 64~80 64~130 Unit: g/m (Weight) (17~22) (17~34) (Unit: lb.)

Special _ _ OHP film paper etc.

Dec. 1996 © TOSHIBA 1 - 1 2060, 2860/70 SPECIFICATIONS

Copy speed

System copy speed

Cassette/manual LCF Paper size 2060 2860 2060 2860 A4, B5, A5-R 20 28 20 28 LT, ST-R A4-R, B5-R 20 26 — — LT-R B4, FOLIO 20 22 — — LG, Computer A3 19 19 — — LD Reduction/ 15 15 15 15 Enlargement

Manual feeding represents the value when the size is set.

CPM

(BLI format)

Mode CPM

Original→Copy Number of copies 2060 2860

1 → 1 1 set 19 24

3 set 20 27 5 set 20 28

1 → 2 1 set 10 10

3 set 15 18 5 set 17 21

2 → 2 1 set 8 8

3 set 14 16 5 set 16 19

2 → 1 1 set 16 16

3 set 19 23 5 set 19 25

*Ten originals (A4) are set in the ADF. This includes the first

copy time.

First copy Approx. 4.0 sec. (Actual-size A4 or Letter from upper cassette) Warm-up time Approx. 80 sec. Multiple copying 1~999, keyboard entry Reproduction ratio

Actual ratio 100% or 101% (Setting mode) Zoom ratios 50~200% (Multiple reduction and enlargement in 1% steps)

2060, 2860/70 SPECIFICATIONS 1 - 2 Dec. 1996 © TOSHIBA

Paper supply Cassette or sheet-bypass feeding

Cassette: 600 sheets Sheet-bypass feeding: 50 sheets

Toner supply Automatic density detection and replenishment

Toner cartridge replacement Exposure Automatic control and manually selectable (9 steps) Weight Copier: 73 kg (with 2 cassettes and the platen cover),

ADU: 10 kg Power source 115 V ~ 60 Hz, 12A For the U.S.A. and Canada

220 V ~ 50/60 Hz, 8A

240 V ~ 50 Hz, 8A Power consumption 1.5 kW (115 V), 1.7 kW (220 V/240 V) Counter 6-digit total counter

Machine size

598mm

640mm

For Europe

123

540mm

Dec. 1996 © TOSHIBA 1 - 3 2060, 2860/70 SPECIFICATIONS

1.2 Accessories

Copy receiving tray : 1 pc. Operator’s manual : 1 pc. Set-up report : 1 pc. Drum : 1 pc. Developer : 1 bottle Toner : 1 pc. *Accessories vary according to the destination.

1.3 Options

Automatic duplexing unit: ADU MD-5002 Automatic document feeder: ADF MR-3006 (RADF), MR-2008 (ADF) Paper feed pedestal: PFP KD-1003 (1 cassette), KD-2009 (2 cassettes) Paper feed unit MY-1006 Large capacity feeder: LCF MP-1501 Sorter MG-1003A (10 bins)

Key copy counter MU-8/MU-10 (6 digit)

*Options vary according to the destination.

1.4 Supplies

Drum OD-2060 Developer ZD-2060 Toner ZT-2060

MG-1004 (10 bins staple)

MG-2009 (20 bins)

MG-2010 (20 bins staple)

2060, 2860/70 SPECIFICATIONS 1 - 4 Dec. 1996 © TOSHIBA

2. OUTLINE OF THE MACHINE

2.1 Sectional Views and Electrical Parts Location Diagram

2.1.1 Sectional view [A] Front view

EP ER

ENEM

GK GT

AP AN

AR BK AL

DO CS DT

CR FL DN

DMFN

(This diagram includes an installed ADU. Refer to Chapter 13 concerning the ADU.)

Dec. 1996 © TOSHIBA 2 - 1 2060, 2860/70 GENERAL

No. Name

1 Carriage 1 2 Mirror 1 3 Reflector 4 Light distribution adjustment plates 5 Exposure lamp 6 Carriage 2 7 Mirror 2 8 Mirror 3 9 Mirror unit AT Mirror 4 AK Mirror 5 AL Mirror 6 AM Slit glass AN Auto exposure sensor AO Lens AP Original glass AQ Ozone filter AR Main charger

CQ Cassette CR Manual feed separation pad CS Manual feed roller DT Manual pickup roller DK Cassette separation roller DL Cassette feed roller DM Cassette pickup roller DN Upper transport roller DO Manual feed switch (S6) DP Paper guide DQ Lower transport roller DR Aligning switch (S8) DS Aligning roller (U) ET Aligning roller (L) EK Thermistor-1 (THMS1) EL Thermostat (THERMO) EM Heater lamp

EN Heat roller (upper side) AS Discharge lamp BT Receiving tray BK LED eraser array BL Main blade BM Recovery blade BN Toner recovery auger BO Separation claw (for drum) BP Transfer charger BQ Separation charger BR Drum BS Bias guide CT Transport belt CK Magnetic roller CL Leveller (doctor) CM Auto-toner sensor CN Mixer 1 CO Mixer 2 CP Sheet bypass guide

EO Pressure roller (lower side)

EP Separation claw (for heat roller)

EQ Felt roller

ER Heat roller cleaning blade

ES Fuser exit roller

FT Scraper

FK Fuser cover

FL Paper stop switch-1 (S7)

FM Paper stop switch-2 (S16)

FN Paper-empty switch-2 (S14)

FO Cassette tray

FP Cassette size switch-2 (S15)

FQ Exit/ADU selection gate

FR Exit roller

FS ADU

GT Exit fan (M7)

GK Bottom fan (M8)

2060, 2860/70 GENERAL 2 - 2 Dec. 1996 © TOSHIBA

[B] Rear side view

HP HO IO IP

HLGRHKHTHRITIK

FRES

Dec. 1996 © TOSHIBA 2 - 3 2060, 2860/70 GENERAL

No. Name

GP Scanning motor (M2) GQ Carriage drive wire GR Drum gear GS Aligning clutch (CLT2) HT Drum driving gear HK Drum belt HL Belt for dev-unit, ALGN-roller & paper feeding drive HM Belt for fuser drive HN Main motor (M1) HO Lens motor (M3) HP Mirror motor (M4) HQ Thermistor-2 (THMS2) HR Dev-unit drive gear HS Aligning roller IT Paper feed belt IK Manual feed clutch (CLT4) IL Transport roller clutch (CLT1) IM Transport roller drive belt IN Cassette feed clutch (CLT3, 5) IO Optical fan (M6,12) IP Document motor (M11)

2060, 2860/70 GENERAL 2 - 4 Dec. 1996 © TOSHIBA

2.1.2 Electrical parts layout [A] DC electrical parts (except motors)

[Front side]

AL BP

[Rear side]

Dec. 1996 © TOSHIBA 2 - 5 2060, 2860/70 GENERAL

No. Name

1 Control panel key PC board (PWA-KEY) 2 Display PC board (PWA-DSP) 3 Liquid crystal module (LCD) 4 Total counter (T-CTR) 5 Logic PC board (PWA-LGC) 6 Auto paper sensor-2 (APS-R) 7 Auto paper sensor-3 (APS-C) 8 Auto paper sensor-4 (APS-F) 9 Toner-full switch (T-FUL-SW) (S13)

*AT Size switch 1 (SIZE1-SW) (S5)

AK Discharge lamp PC board (PWA-ERS) AL LED eraser array PC board (K-DCH) AM High-voltage power supply (PS-HVT) AN Home switch (HOME-SW) (S10) AO Platen switch (PTN-SW) (S27) AP Manual feed switch (M-FED-SW) (S6) AQ Aligning switch (PSTPO-SW) (S8) AR Paper stop switch 1 (PSTP1-SW) (S7)

*BK Paper-empty switch-1 (EMP1-SW) (S3)

BL Exit switch (EXIT-SW) (S9) BM Heat-roller thermistor 1 (THMS1-HTR) BN Toner sensor (TNR-ATC) BO Lens switch (LNS-SW) (S11) BP Mirror switch (MRR-SW) (S12) BQ Automatic exposure PC board (PWA-AES) BS Aligning-roller clutch (RGT0-CLT) (CLT2) CT Transport-roller clutch (RGT1-CLT) (CLT1) CK Manual-feed roller clutch (MFED-CLT) (CLT4)

*CL Feed-roller clutch 1 (FED1-CLT) (CLT3)

CM Size switch 2 (SIZE2-SW) (S15) CN Feed-roller clutch 2 (FED2-CLT) (CLT5) CO Paper-empty switch 2 (EMP2-SW) (S14) CP Paper stop switch 2 (PSTP2-SW) (S16) CQ Heat-roller thermistor-2 (THMS2-HTR) CR Drum thermistor (DRM-THMS)

*CS Tray-up switch (T-UP1-SW) (S28) AS Side door switch (U-COV-SW) (S4) BT Auto paper sensor-1 (APS-3B)

*: Option

DT Tray-up switch (T-UP2-SW) (S29)

2060, 2860/70 GENERAL 2 - 6 Dec. 1996 © TOSHIBA

[B] DC electrical parts (motors)

[Front side]

No. Name

DK Main motor (MAIN-MOT) (M1) DL Scanning motor (SCN-MOT) (M2) DM Lens motor (LNS-MOT) (M3) DN Mirror motor (MRR-MOT) (M4) DO Toner motor (TNR-MOT) (M9) DP Document motor (DCM-MOT) (M11)

[Rear side]

No. Name

*DQ Tray-up motor-1 (T-UP1-MOT) (M13)

DR Tray-up motor-2 (T-UP2-MOT) (M14)

DS Optical fan-F (OPT-FAN-F) (M12)

ET Optical fan-R (OPT-FAN-R) (M6)

EK Exit fan (EXIT-FAN) (M7)

EL Bottom fan (BTM-FAN) (M8)

*: Option

Dec. 1996 © TOSHIBA 2 - 7 2060, 2860/70 GENERAL

[C] AC electrical parts

[Front side]

[Rear side]

No. Name

EM SW power supply (PS-ACC) EN Door switch (DOOR-SW) (S2) EO Main switch (MAIN-SW) (S1) EP Lamp regulator PC board (PWA-LRG) EQ Heater lamp (HTR-LAMP) ER Damp heater L (D-HTR-L) (Option)

No. Name

FT Thermostat (Option) FK Damp heater U1 (D-HTR-U1) (Option) FL Exposure lamp (EXPO-LAMP) FM Thermofuse (FU-EXPO) FN Fuse PC board (PWA-FUS) (Option) FO Damp heater U2 (D-HTR-U2) (Option)

ES Thermostat (K-THERMO)

2060, 2860/70 GENERAL 2 - 8 Dec. 1996 © TOSHIBA

2.2 Symbol and Function of Electrical Parts

(1) Motors

Symbol

M1 MAIN-MOT (Main motor) Drives the drum, developer, IC motor 10 31

M2 SCN-MOT (Scanning motor) Scans the optical system Pulse motor 5 23 M3 LNS-MOT (Lens motor) Drives the lens unit Pulse motor 11 23 M4 MRR-MOT (Mirror motor) Drives the mirror unit Pulse motor 11 23 M6 OPT-FAN-R (Optics fan-R) Cools the optical system IC motor: Z80 5 8 M7 EXIT-FAN (Exit-fan) Cools the drum and cleaner IC motor: Z80 4 14 M8 BTM-FAN (Bottom fan) Prevents the paper from floating IC motor: Z80 4 14

M9 TNR-MOT (Toner motor) Replenishes the toner Brush motor 23 30 M11 DCM-MOT (Document motor) Drives copy-area indicators Pulse motor 9 2 M12 OPT-FAN-F (Optical fan-F) Cools the optical system IC motor: Z80 4 14 M13 T-UP1-MOT (Tray-up motor-1) Drives the upper cassette tray to Brush motor 12 36

Code name Remarks

heat roller and transport belt

up through suction

lift up/down

Function

Parts list

Page Item

M14 T-UP2-MOT (Tray-up motor-2) Drives the lower cassette tray to Brush motor 12 36

lift up/down

(2) Electromagnetic spring clutches

Parts list

Symbol

CLT1 RGT1-CLT Transmits transport-roller drive. 13 40

(Transport-roller clutch)

CLT2 RGT0-CLT Transmits aligning-roller drive. 15 16

(Aligning-roller clutch)

CLT3 FED1-CLT Transmits feed-roller clutch 12 24

(Feed-roller clutch-1) drive. (Upper cassette)

CLT4 MFED-CLT Transmits manual-feed roller 14 17

(Manual-feed roller clutch) clutch drive.

CLT5 FED2-CLT Transmits feed-roller clutch 12 24

(Feed-roller clutch-2) drive. (Lower cassette)

Code name Function Remarks

Page Item

(3) Counters

Parts list

Symbol Code name

T T-CTR (Total counter) Total counter 6-digit 3 23

K K-CTR (Key-copy counter) Individual counter 6-digit (option) 101 5

Dec. 1996 © TOSHIBA 2 - 9 2060, 2860/70 GENERAL

Function

Remarks

Page Item

(4) Switches

Parts list

Symbol

S1 MAIN-SW (Main switch) Power supply Tumbler type 6 3 S2 DOOR-SW (Door switch) For safety, cancels abnormal Push switch 6 4

S3 EMP1-SW Detects lack of paper in the upper Photointerruptor 12 32

S4 U-COV-SW For safety, detects open/closed Push switch 2 27

Code name

condition

(Paper-empty switch-1) cassette

Function

Remarks

Page Item

(Side door switch) S5 SIZE1-SW (Size switch-1) Detects upper cassette size Push switch 13 50 S6 M-FED-SW Detects manual feeding Photointerruptor 14 3

(Manual-feed switch) S7 PSTP1-SW Detects paper in front of the Photointerruptor 13 8

(Paper stop switch-1) upper transport roller S8 PSTP0-SW Detects paper in front of the Photointerruptor 15 20

(Aligning switch) aligning roller S9 EXIT-SW (Exit switch) Detects exiting paper Photointerruptor 28 8

S10 HOME-SW (Home switch) Detects home position of the Photointerruptor 11 8

S11 LNS-SW (Lens switch) Detects home position of the lens Photointerruptor 11 8

S12 MRR-SW (Mirror switch) Detects home position of the mirror Photointerruptor 11 8

S13 T-FUL-SW Detects when the used toner bag Push switch 10 25

(Toner-full switch) is full

S14 EMP2-SW Detects lack of paper in the lower Photointerruptor 12 32

condition of paper jam release cover

optical system

unit

(Paper-empty switch-2) cassette

S15 SIZE2-SW Detects lower cassette size Push switch 13 50

(Size switch-2)

S16 PSTP2-SW Detects paper in front of the lower Photointerruptor 2 26

(Paper stop switch-2) transport roller

S27 PTN-SW Detects open/closed condition of Photointerruptor 5 38

(Platen switch) the platen cover

S28 T-UP1-SW Detects the position of the upper Photointerruptor 12 32

(Tray-up-1 switch) cassette tray

S29 T-UP2-SW Detects the position of the lower Photointerruptor 12 32

(Tray-up-2 switch) cassette tray

2060, 2860/70 GENERAL 2 - 10 Dec. 1996 © TOSHIBA

(5) Heaters and lamps

Parts list

Symbol

EXP EXPO-LAMP Exposes the original Halogen lamp 18 13

HTR HTR-LAMP (Heater lamp) Fixing Halogen lamp 25 6

ERS ERS-LAMP Discharges the drum Fuse type 4 12

DCH DCH-LED To interrupt the charge LED 4 10

DHU1

Code name

(Exposure lamp) 300W

(Discharge lamp)

(LED eraser array)

D-HTR-U1 (Damp heater U1) Keeps optical system warm (option)

Function

Remarks

900W (100V series) 1100W (200V series)

Cement resistor 102 4

Page Item

DHU2 DHL D-HTR-L (Damp heater L)

D-HTR-U2 (Damp heater U2) Keeps optical system warm (option)

Keeps the drum and transfer/separation charger case warm (option)

Cement resistor 102 4 Cement resistor 7 30

(6) PC boards

Symbol

LGC PWA-LGC (Logic PC board) Controls the entire copier 8 15 DSP PWA-DSP Controls condition displays 3 20

(Display PC board)

KEY PWA-KEY Controls operation keys 3 21

(Key PC board)

LRG PWA-LRG Controls exposure lamp 5 20

(Lamp regulator PC board)

DCH K-DCH Turns on and drives LED during 4 10

(LED eraser array PC board) reduction

ERS PWA-ERS Discharge lamp 4 12

Code name

Function

Remarks

Parts list

Page Item

(Discharge lamp PC board)

AES PWA-AES Reads dark/light of the original 17 37

(Automatic exposure PC board)

FUS PWA-FUS (Fuse PC board) Fuse for the damp heater circuit 7 31

Dec. 1996 © TOSHIBA 2 - 11 2060, 2860/70 GENERAL

(7) Transformers

Parts list

Symbol

HVT PS-HVT (Charging transformer) Generates high voltage electricity

ACC PS-ACC Power supply for whole copier 8 7

(Power supply for all) power

Code name

for charging (negative voltage) (Transfer/separation Generates high voltage electricity transformer) for transfer/separation and

developing bias voltage (Transfer bias Generates bias voltage to raise transformer) transfer efficiency

Function

Remarks

Mono unit type 7 27

Page Item

(8) Others

Parts list

Symbol

ATS SNR-ATC Reads toner density with a magnetic 23 33

Code name

Function

Remarks

Page Item

(Auto-toner sensor) sensor

THMS1 THMS1-HTR Detects temperature of the heat roller 26 19

(Heat-roller thermistor-1)

THMS2 THMS2-HTR Detects the temperature of the heat roller 26 27

(Heat-roller thermistor-2) end

THERMO K-THERMO Prevents abnormal heating of heat roller 26 8

(Thermostat)

FU FU-EXPO (Thermofuse) Prevents abnormal heating of the 18 12

exposure lamp

2060, 2860/70 GENERAL 2 - 12 Dec. 1996 © TOSHIBA

2.3 Wire Harness Location Diagram

[A] Location diagram for upper unit

Dec. 1996 © TOSHIBA 2 - 13 2060, 2860/70 GENERAL

[B] Location diagram for lower unit

2060, 2860/70 GENERAL 2 - 14 Dec. 1996 © TOSHIBA

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3560/70 S/M

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2.4 Removal of Co vers and PC Boards

2.4.1 Removal of covers [A] Front cover

(1) Open the front cover. (2) Remove the pins on the hinges at both ends

(1 each).

[B] Upper rear cover

(1) Remove the 4 screws.

[C] Lower rear cover

(1) Remove the upper 3 screws. (2) Loosen the lower 2 screws.

Front cover

Upper rear cover

Upper feed cover

[D] Upper feed cover

(1) Open the front cover and the bypass tray and

then remove the 2 screws.

[E] Feed cover (left and right)

(1) Remove the paper feed cover. (2) When removing the left feed cover, open the

front cover.

(3) Remove the screws (2 on each side).

Left feed cover

Right feed cover

Lower rear cover

Loosen

Dec. 1996 © TOSHIBA 2 - 15 2060, 2860/70 GENERAL

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[F] Upper exit cover

(1) Remove the 2 screws. (2) Open the front cover and remove the screw.

[G] Lower exit cover

(1) Lift the upper unit. (2) Remove the 5 screws.

[H] Rear top cover

(1) Remove the original cover. (2) Remove the 4 screws.

Left top cover

Upper exit cover

Lower exit cover

Rear top cover

Right top cover

[I] Right top cover (feed side)

(1) Remove the 2 screws.

[J] Left top cover (exit side)

(1) Remove the 2 screws.

[K] Glass fix

(1) Remove the 2 screws.

[L] Upper inner cover

(1) Remove the process unit. (2) Remove the 3 screws.

Glass fix

Upper inner cover

2060, 2860/70 GENERAL 2 - 16 Dec. 1996 © TOSHIBA

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[M] Middle inner cover

(1) Remove the screw.

[N] Door switch cover

(1) Remove the 2 screws.

Middle inner cover

Door switch cover

[O] Lower inner cover

(1) Remove the toner box. (2) Remove the middle inner cover.

Lower inner cover

(3) Remove the 1 screw.

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2.4.2 Removal of main PC boards [A] Logic PC board (PWA-LGC)

(1) Remove the lower rear cover. (2) Remove the 16 connectors (2860).

(15 connectors for 2060). (3) Remove the lock supports (4 pcs.) (4) Remove the logic PC board.

[B] Power supply PC board (PS-ACC)

(1) Remove the connector bracket (2 screws). (2) Remove the 14 connectors. (3) Remove the 4 screws. (4) Remove the power supply PC board.

[C] Lamp regulator PC board (PWA-LRG)

(1) Remove the upper rear cover. (2) Remove the 2 connectors.

Lock support

PWA-LGC

PWA-LRG

Lock support

PS-ACC

Connector bracket

(3) Remove the lamp regulator PC board (4 lock

supports).

Connectors

Lock support

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[D] ADU drawer connector

(1) Remove the logic PC board. (2) Remove the bracket for the logic PC board (3

screws).

Remove the connector J535 on the PS-ACC. (3) Remove the bracket for the ADU drawer con-

nector (2 screws).

Bracket for PWA-LGC

ADU drawer connector bracket

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3560/70 S/M

3. COPYING PROCESS

3.1 Copying Process

Original exposure

Halogen lamp

Paper exiting

300 W

Fixing

Heat roller

900 W (115V) 1030W (220/240V)

LED eraser array

63 LEDs

Charging

–635V ±5 V

Discharge lamp

1.8W x 9 lamps

Cleaning

Separation AC 3.41 kV

1 kHz

Optical

section

Transfer

–DC 5.25 kV

Toner

Carrier

Black development

Magnetic roller Bias –100 VDC

Sheet-bypass feeding (50 sheets)

Cassette feeding (upper/ lower/PFP)(600 sheets)

LCF feeding (1500 sheets)

Transfer bias

1 Charging :Negatively charges surface of

the photosensitive drum.

2 Exposure : Forms an electrical image on

the drum.

3 Development : toner adheres to surface of

photosensitive drum and forms a visible image.

4 Transfer bias :Increases transfer efficiency.

5 Transfer :Transfers the visible image from

the drum onto the transfer (copy) sheet.

–DC 990 V

6 Separation : Separates the transfer sheet,

along with the toner, from the

drum.

7 Fixing :Fixes the toner on the transfer

sheet by applying heat and

pressure.

8 Cleaning :Mechanically removes any re-

Discharge lamp

maining toner on the drum.

:Discharges any remaining

charge from the drum.

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3.2 Comparison with the 2050 of Copying Process Conditions

Process 2050 2060/2860

1. Drum OD-1710 (OPC ø60) OD-2060 (OPC ø60) (1) Sensitivity Highly sensitized drum (1) (2) Charger grid voltage DC –800V (2)–635 V DC

Scolotron system Scolotron system

Output adjustable by using the ten keys

2. Main charger Variable output (fixed current) using the digital keys

3. Exposure

(1) Light control Automatic exposure/manual (1)Automatic exposure and

slide volume setting manual 9-step setting

(2) Light source 300W halogen lamp stabilized with (2)

regulator (light intensity remains constant even when voltage varies)

4. Development

(1) Magnetic roller One magnetic roller (with two shaft (1)

mixers)

(2) Auto-toner Magnetic bridge-circuit system (2) (3) Toner replenishment Toner cartridge system (3) (4) Toner-empty detection Intensity sensing system (4) (5) Toner T-1710 (Black) (5)T-2060 (Black)

T-1710-R (Red) T-1710-BL (Blue)

(6) Developing material D-1710 (Black) (6)D-2060 (Black)

D-1710-R (Red) D-1710-BL (Blue)

(7) Developer bias –194V DC, volume adjustable (7)–100 V DC, adjustable using the

digital keys

5. Transfer bias –1.4KV DC –990 V DC

6. Transfer Adjustable output (fixed current) using the digital keys

7. Separation Adjustable output (independently adjustable using the digital keys)

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3560/70 S/M

Process 2050 2060/2860

8. Discharge

(1) Discharging position Discharge by exposure after cleaning (1) (2) Discharge lamp Discharge by tungsten lamp (2)

9. Cleaning

(1) System Blade system (1) (2) Recovered toner Non-reusable (2)

10. Fixing

(1) System Long-life heat roller system (1)

• Fixing • Fixing roller: Teflon coated roller • Fixing roller: Aluminum roller coated with Teflon (ø40)

• Pressure • Pressure roller: PFA tube silicon • Pressure roller:

roller (ø28) Silicon rubber roller with

PFA tube. (ø35)

• Lamp rating Infrared heat Infrared heat

• 900W (100V series) • 900W (115V)

• 1100W (200V series) • 1030W (220/240V)

(2) Cleaning Cleaning with silicon impregnated (2)

roller

(3) Heater-temperature control ON/OFF control by thermistor (3)

11. Control Microcomputer

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4. COPIER OPERATION

4.1 Operation Outline

Copier operation Operation during warm up and standby

Automatic-feed copying using PRINT key

Copying operation Bypass-feed copying

Interrupt copying

4.2 Description of Operation

4.2.1 Operation up to standby state after power on

(1) Initial operation

• The main switch is turned ON.

• Copy quantity indicator “0” and “WAIT WARMING UP” are displayed.

• Initialization of the optical system ~ Carriages move to their home position and then stop. ~ Lens and mirror units move to their home position and then stop. ~ Indicators perform the initial operation and move to a position indicating the copy area.

• Initialization of the paper feed section ~ Each slot’s cassette trays move upward. If they were raised already, they are not moved.

(2) Pre-running

65 sec. have elapsed since the power was turned ON ~ Main motor rotates ~ Fuser unit drive section rotates: Pre-running

Pressure roller is warmed

After pre-running for 15 sec., the main motor stops

~ Fuser unit drive section stops

(3) When the heat roller temperature is sufficient for fixing, the heater lamp is turned off , and the copier

enters the standby mode.

4.2.2 Standby (ready)

• Bottom fan motor (M8) and exit fan motor (M7) are running at low speed.

• All keys on the control panel are operable. When there is no key input for a set amount of time, the copy quantity “1” will be shown, the reproduction ratio will indicate “actual size”, and the exposure will be set at automatic.

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