TOSHIBA 2060, 2860, 2870 SERVICE MANUAL

SERVICE MANUAL 2060/2860/70

PLAIN PAPER COPIER

AUTOMATIC DUPLEXING UNIT MD-5002

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Copyright TOSHIBA CORPORATION 1995

ALL RIGHTS RESERVED

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 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.

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 transformer.

•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/m2
(Weight)			(17~22)		(17~34)	(Unit: lb.)
Special		_		_	OHP film
paper					etc.

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2060, 2860/70 SPECIFICATIONS

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											CPM
		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.
System copy speed
(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)

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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	123	For Europe
	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

540mm

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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)
	MG-1004 (10 bins staple)
	MG-2009 (20 bins)
	MG-2010 (20 bins staple)
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

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Dec. 1996 © TOSHIBA

2.OUTLINE OF THE MACHINE

2.1 Sectional Views and Electrical Parts Location Diagram

2.1.1Sectional view

[A] Front view

	1
		AS
2 5	4 3	AO AP AN		AM
		AR	BK	AL

7

6

8		AT
		9
	EP ER	AK
AQ		ENEM

			GK						DO
	FK	EQ EL	GT			CL			CS
				BL					DT CP
FR			BN	BM		CK CN	CO
	ES	EK	CT	BO	BR
FR
	ES					DS
		EO
	FQ				BS	ET
									CR
				BQ	BP
							CM		FL
		FT				DR	DP		DN
			FS
BT
									FM
									DQ
									DK
			CQ				FN DM	DL
						FO

FP

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

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2060, 2860/70 GENERAL

No.	Name	No.	Name
1	Carriage 1	CQ	Cassette
2	Mirror 1	CR	Manual feed separation pad
3	Reflector	CS	Manual feed roller
4	Light distribution adjustment plates	DT	Manual pickup roller
5	Exposure lamp	DK	Cassette separation roller
6	Carriage 2	DL	Cassette feed roller
7	Mirror 2	DM	Cassette pickup roller
8	Mirror 3	DN	Upper transport roller
9	Mirror unit	DO	Manual feed switch (S6)
AT	Mirror 4	DP	Paper guide
AK	Mirror 5	DQ	Lower transport roller
AL	Mirror 6	DR	Aligning switch (S8)
AM	Slit glass	DS	Aligning roller (U)
AN	Auto exposure sensor	ET	Aligning roller (L)
AO	Lens	EK	Thermistor-1 (THMS1)
AP	Original glass	EL	Thermostat (THERMO)
AQ	Ozone filter	EM	Heater lamp
AR	Main charger	EN	Heat roller (upper side)
AS	Discharge lamp	EO	Pressure roller (lower side)
BT	Receiving tray	EP	Separation claw (for heat roller)
BK	LED eraser array	EQ	Felt roller
BL	Main blade	ER	Heat roller cleaning blade
BM	Recovery blade	ES	Fuser exit roller
BN	Toner recovery auger	FT	Scraper
BO	Separation claw (for drum)	FK	Fuser cover
BP	Transfer charger	FL	Paper stop switch-1 (S7)
BQ	Separation charger	FM	Paper stop switch-2 (S16)
BR	Drum	FN	Paper-empty switch-2 (S14)
BS	Bias guide	FO	Cassette tray
CT	Transport belt	FP	Cassette size switch-2 (S15)
CK	Magnetic roller	FQ	Exit/ADU selection gate
CL	Leveller (doctor)	FR	Exit roller
CM	Auto-toner sensor	FS	ADU
CN	Mixer 1	GT	Exit fan (M7)
CO	Mixer 2	GK	Bottom fan (M8)
CP	Sheet bypass guide

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[B] Rear side view

HP

HO

IO

IP

GP

GQ

IK IT	HR HT	HK	GR HL	HN	ES	FR

HQ

EN

HM

HS

CT

GS

IT

IT

IN

IM

IL

IN

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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)

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2.1.2Electrical parts layout

[A] DC electrical parts (except motors)

1

4

7

BO

AK8

AL

BP

BN

AQ

AT

[Front side]

AS

AP

36	BT	BQ
2		BL

9

		CR
		AM
		BS
		5
		CL
	BK CM	CN
	AR CS
		[Rear side]
	CP
	CODTCK	CT

BMAN AO

CQ

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2060, 2860/70 GENERAL

No.	Name	No.		Name
1	Control panel key PC board (PWA-KEY)	*BK		Paper-empty switch-1 (EMP1-SW) (S3)
2	Display PC board (PWA-DSP)	BL		Exit switch (EXIT-SW) (S9)
3	Liquid crystal module (LCD)	BM		Heat-roller thermistor 1 (THMS1-HTR)
4	Total counter (T-CTR)	BN		Toner sensor (TNR-ATC)
5	Logic PC board (PWA-LGC)	BO		Lens switch (LNS-SW) (S11)
6	Auto paper sensor-2 (APS-R)	BP		Mirror switch (MRR-SW) (S12)
7	Auto paper sensor-3 (APS-C)	BQ		Automatic exposure PC board (PWA-AES)
8	Auto paper sensor-4 (APS-F)	BS		Aligning-roller clutch (RGT0-CLT) (CLT2)
9	Toner-full switch (T-FUL-SW) (S13)	CT		Transport-roller clutch (RGT1-CLT) (CLT1)
*AT	Size switch 1 (SIZE1-SW) (S5)	CK		Manual-feed roller clutch (MFED-CLT) (CLT4)
AK	Discharge lamp PC board (PWA-ERS)	*CL		Feed-roller clutch 1 (FED1-CLT) (CLT3)
AL	LED eraser array PC board (K-DCH)	CM		Size switch 2 (SIZE2-SW) (S15)
AM	High-voltage power supply (PS-HVT)	CN		Feed-roller clutch 2 (FED2-CLT) (CLT5)
AN	Home switch (HOME-SW) (S10)	CO		Paper-empty switch 2 (EMP2-SW) (S14)
AO	Platen switch (PTN-SW) (S27)	CP		Paper stop switch 2 (PSTP2-SW) (S16)
AP	Manual feed switch (M-FED-SW) (S6)	CQ		Heat-roller thermistor-2 (THMS2-HTR)
AQ	Aligning switch (PSTPO-SW) (S8)	CR		Drum thermistor (DRM-THMS)
AR	Paper stop switch 1 (PSTP1-SW) (S7)	*CS		Tray-up switch (T-UP1-SW) (S28)
AS	Side door switch (U-COV-SW) (S4)	DT		Tray-up switch (T-UP2-SW) (S29)
BT	Auto paper sensor-1 (APS-3B)

*: Option

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[B] DC electrical parts (motors)

DS

EK

DP

DL

DO

[Front side]

ET

EL

DK

DM

DQDN

DR

[Rear side]

No.	Name	No.	Name
DK	Main motor (MAIN-MOT) (M1)	*DQ	Tray-up motor-1 (T-UP1-MOT) (M13)
DL	Scanning motor (SCN-MOT) (M2)	DR	Tray-up motor-2 (T-UP2-MOT) (M14)
DM	Lens motor (LNS-MOT) (M3)	DS	Optical fan-F (OPT-FAN-F) (M12)
DN	Mirror motor (MRR-MOT) (M4)	ET	Optical fan-R (OPT-FAN-R) (M6)
DO	Toner motor (TNR-MOT) (M9)	EK	Exit fan (EXIT-FAN) (M7)
DP	Document motor (DCM-MOT) (M11)	EL	Bottom fan (BTM-FAN) (M8)

*: Option

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2060, 2860/70 GENERAL

[C] AC electrical parts

	FO
	FM
	FL
	EN
FK	ES
EP	EQ

FT

FN

[Front side]

EO

EM

ER

[Rear side]

No.	Name	No.	Name
EM	SW power supply (PS-ACC)	FT	Thermostat (Option)
EN	Door switch (DOOR-SW) (S2)	FK	Damp heater U1 (D-HTR-U1) (Option)
EO	Main switch (MAIN-SW) (S1)	FL	Exposure lamp (EXPO-LAMP)
EP	Lamp regulator PC board (PWA-LRG)	FM	Thermofuse (FU-EXPO)
EQ	Heater lamp (HTR-LAMP)	FN	Fuse PC board (PWA-FUS) (Option)
ER	Damp heater L (D-HTR-L) (Option)	FO	Damp heater U2 (D-HTR-U2) (Option)
ES	Thermostat (K-THERMO)

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2.2 Symbol and Function of Electrical Parts

(1) Motors

	Symbol	Code name	Function	Remarks	Parts list
					Page	Item
	M1	MAIN-MOT (Main motor)	Drives the drum, developer,	IC motor	10	31
			heat roller and transport belt
	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
			up through suction
	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
			lift up/down
	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	Code name	Function	Remarks
						Page	Item
	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)

(3) Counters

					Parts list
	Symbol	Code name	Function	Remarks
					Page	Item
	T	T-CTR (Total counter)	Total counter	6-digit	3	23
	K	K-CTR (Key-copy counter)	Individual counter	6-digit (option)	101	5

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2060, 2860/70 GENERAL

(4) Switches

					Parts list
	Symbol	Code name	Function	Remarks
					Page	Item
	S1	MAIN-SW (Main switch)	Power supply	Tumbler type	6	3
	S2	DOOR-SW (Door switch)	For safety, cancels abnormal	Push switch	6	4
			condition
	S3	EMP1-SW	Detects lack of paper in the upper	Photointerruptor	12	32
		(Paper-empty switch-1)	cassette
	S4	U-COV-SW	For safety, detects open/closed	Push switch	2	27
		(Side door switch)	condition of paper jam release cover
	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
			optical system
	S11	LNS-SW (Lens switch)	Detects home position of the lens	Photointerruptor	11	8
			unit
	S12	MRR-SW (Mirror switch)	Detects home position of the mirror	Photointerruptor	11	8
			unit
	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
		(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

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(5) Heaters and lamps

				Remarks	Parts list
	Symbol	Code name	Function
					Page	Item
	EXP	EXPO-LAMP	Exposes the original	Halogen lamp	18	13
		(Exposure lamp)		300W
	HTR	HTR-LAMP (Heater lamp)	Fixing	Halogen lamp	25	6
				900W
				(100V series)
				1100W
				(200V series)
	ERS	ERS-LAMP	Discharges the drum	Fuse type	4	12
		(Discharge lamp)
	DCH	DCH-LED	To interrupt the charge	LED	4	10
		(LED eraser array)
	DHU1	D-HTR-U1 (Damp heater U1)	Keeps optical system warm (option)	Cement resistor	102	4
	DHU2	D-HTR-U2 (Damp heater U2)	Keeps optical system warm (option)	Cement resistor	102	4
	DHL	D-HTR-L (Damp heater L)	Keeps the drum and transfer/separation	Cement resistor	7	30
			charger case warm (option)

(6) PC boards

	Symbol	Code name	Function	Remarks	Parts list
					Page	Item
	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
		(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

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2060, 2860/70 GENERAL

(7) Transformers

				Remarks	Parts list
	Symbol	Code name	Function
					Page	Item
	HVT	PS-HVT (Charging transformer)	Generates high voltage electricity	Mono unit type	7	27
			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
	ACC	PS-ACC	Power supply for whole copier		8	7
		(Power supply for all)	power

(8) Others

					Parts list
Symbol	Code name	Function	Remarks
					Page	Item
ATS	SNR-ATC	Reads toner density with a magnetic			23	33
	(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

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Dec. 1996 © TOSHIBA

2.3 Wire Harness Location Diagram

[A] Location diagram

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2060, 2860/70 GENERAL

[B] Location diagram for lower unit

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Dec. 1996 © TOSHIBA

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3560/70 S/M

2.4 Removal of Covers and PC Boards

2.4.1Removal 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.

[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).

Front cover

Upper rear cover

Upper feed cover

Left

	feed	Lower
		rear
	cover
		cover
	Right feed cover
		Loosen

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2060, 2860/70 GENERAL

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3560/70 S/M

[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.

[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.

Upper exit cover

Lower exit cover

	Rear top cover
Left top cover	Right top cover
	Glass fix

Upper inner cover

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[M] Middle inner cover

(1) Remove the screw.

[N] Door switch cover

(1) Remove the 2 screws.

[O] Lower inner cover

(1)Remove the toner box.

(2)Remove the middle inner cover.

(3)Remove the 1 screw.

Middle inner cover

Door switch cover

Lower inner cover

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2.4.2Removal 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.

Lock support PWA-LGC

Lock support

[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.

PS-ACC

Connector bracket

[C] Lamp regulator PC board (PWA-LRG)
(1) Remove the upper rear cover.	Lock support	PWA-LRG

(2)Remove the 2 connectors.

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

Lock support

Connectors

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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 connector (2 screws).

Bracket for PWA-LGC

ADU drawer connector bracket

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3.COPYING PROCESS

3.1 Copying Process

	Original exposure
2	Halogen lamp
	300 W	LED eraser array	Optical section
		63 LEDs
		Charging	Toner

1

				–635V ±5 V					Carrier
		9	Discharge lamp		_	_
			1.8W x 9 lamps				_
							_		3
	8		Cleaning	+
				+ +			_	+	Black development
							_	+	Magnetic roller
							+		Bias –100 VDC
	7					_	_
						+	+		Sheet-bypass feeding
Paper exiting	Fixing								(50 sheets)
	Heat roller			Separation		Transfer			Cassette feeding (upper/
									lower/PFP)(600 sheets)
	900 W (115V)			AC 3.41 kV
						–DC 5.25 kV			LCF feeding
	1030W (220/240V)
				1 kHz			5		(1500 sheets)
				6					4
									Transfer bias
									–DC 990 V

1 Charging

: Negatively charges surface of

Dthe photosensitive drum.

2 Exposure

: Forms an electrical image on

Dthe drum.

3 Development : toner adheres to surface of

photosensitive drum and forms

D

a visible image.

4 Transfer bias : Increases transfer efficiency.

D
5 Transfer	: Transfers the visible image from
	the drum onto the transfer
	(copy) sheet.

6	Separation	: Separates the transfer sheet,
	D	along with the toner, from the
		drum.
7	Fixing	: Fixes the toner on the transfer
	D	sheet by applying heat and
		pressure.
8	Cleaning	: Mechanically removes any re-

Dmaining toner on the drum.

9 Discharge lamp : 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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	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

4.2.1Operation 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.

4.2.2Standby (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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