Oki PAGE 6ex User Manual

OKIPAGE 6e/6ex LED Page Printer

Maintenance Manual

ODA/OEL/INT

Approval

All specifications are subject to change without notice.

PREFACE

This Maintenance Manual describes the field maintenance methods for OKIPAGE 6e and OKIPAGE 6ex LED Page Printers.

This manual is written for use by service persons. Please note that you should refer to the Printer Handbook for the handling and operating methods of the equipment.

			CONTENTS
1.	CONFIGURATION .....................................................................................			1 - 1
	1.1	System Configuration ........................................................................		1 - 1
	1.2	Printer Configuration ..........................................................................		1 - 2
	1.3	Optional Configuration .......................................................................		1 - 3
	1.4	Specification ......................................................................................		1 - 5
	1.5	Safety Standards ...............................................................................		1 - 7
		1.5.1	Certification Label ....................................................................................	1	- 7
		1.5.2	Warning Label .........................................................................................	1	- 8
		1.5.3	Warning/Caution Marking ........................................................................	1	- 9
2.	OPERATION DESCRIPTION ....................................................................			2 - 1
	2.1	Control Board.....................................................................................		2 - 4
	2.2	PS Board ...........................................................................................		2 - 6
	2.3	RAM Board ........................................................................................		2 - 7
	2.4	Power Supply Board ..........................................................................		2 - 8
	2.5	Electrophotographic Process .............................................................		2 - 10
		2.5.1	Electrophotographic Process Mechanism ...............................................	2	- 10
		2.5.2	Electrophotographic Process ..................................................................	2	- 13
		2.5.3	Process Operation Descriptions ..............................................................	2	- 16
	2.6	Paper Jam Detection .........................................................................		2 - 27
	2.7	Cover Open .......................................................................................		2 - 30
	2.8	Toner Low Detection..........................................................................		2 - 31
3.	PARTS REPLACEMENT ...........................................................................			3 - 1
	3.1	Precautions for Parts Replacement ...................................................		3 - 1
	3.2	Parts Layout.......................................................................................		3 - 3
	3.3	How to Change Parts.........................................................................		3 - 6
		3.3.1	Upper Cover ............................................................................................	3	- 7
		3.3.2	Stacker ....................................................................................................	3	- 8
		3.3.3	LED Head ................................................................................................	3	- 9
		3.3.4	Eject Roller Assy .....................................................................................	3	- 10
		3.3.5	Pulse Motor (Main) ..................................................................................	3	- 11
		3.3.6	Pulse Motor (Registration) .......................................................................	3	- 12
		3.3.7	Lower Base Unit ......................................................................................	3	- 13
		3.3.8	Motor Assy ..............................................................................................	3	- 14
		3.3.9	Hopping Roller Assy ................................................................................	3	- 15
		3.3.10	Stacker Cover Assy .................................................................................	3	- 16
		3.3.11	Registration Roller ...................................................................................	3	- 17
		3.3.12	Transfer Roller .........................................................................................	3	- 18
		3.3.13	Fusing Unit Assy .....................................................................................	3	- 19
		3.3.14	Back-up Roller .........................................................................................	3	- 20
		3.3.15	Sensor Plate (Inlet) ..................................................................................	3	- 21
		3.3.16	Toner Sensor (Adhesion) ........................................................................	3	- 22
		3.3.17	Sensor Plate (Outlet) ...............................................................................	3	- 23
		3.3.18	Manual Feed Guide Assy ........................................................................	3	- 24
		3.3.19	Sensor Plate (Paper Supply) ...................................................................	3	- 25
		3.3.20	Main Control PCB ....................................................................................	3	- 26
		3.3.21	Power Supply Board and Contact Assy ..................................................	3	- 27

>>>>>

		3.3.22	Transformer .............................................................................................	3	- 28
		3.3.23	Cassette Guide L .....................................................................................	3	- 29
		3.3.24	Cassette Guide R ....................................................................................	3	- 30
4.	ADJUSTMENT ...........................................................................................			4		- 1
	4.1	Adjustment .........................................................................................		4		- 1
		4.1.1	Maintenance Functions ...........................................................................	4	- 1
	4.2	Adjustment .........................................................................................		4		- 10
		4.2.1	Maintenance Modes and Functions ........................................................	4	- 10
	4.3	Adjustment When Replacing a Part ...................................................		4		- 12
		4.3.1	Adjustment at the Time of Part Replacement
			(OKIPAGE6e 300dpi LED head) .............................................................	4	- 12
		4.3.2	Adjustment When Replacing a Part (OKIPAGE6ex 600dpi LED head) ..	4	- 14
		4.3.3	Uploading / Downloading EEPROM data ................................................	4	- 17
5.	PERIODICAL MAINTENANCE .................................................................			5		- 1
	5.1	Periodical Replacement Parts ...........................................................		5		- 1
	5.2	Cleaning.............................................................................................		5		- 1
		5.2.1	Cleaning of LED Lens Array ....................................................................	5	- 1
6.	TROUBLESHOOTING PROCEDURES ....................................................			6		- 1
	6.1	Troubleshooting Tips .........................................................................		6		- 1
	6.2	Check Points before Correcting Image Problems ..............................		6		- 1
	6.3	Tips for Correcting Image Problems ..................................................		6		- 1
	6.4	Preparation for Troubleshooting ........................................................		6		- 2
	6.5	Troubleshooting Flow ........................................................................		6		- 3
		6.5.1	Status Message/Trouble List ...................................................................	6	- 3
		6.5.2	Status Message Troubleshooting ............................................................	6	- 24
		6.5.3	Image Troubleshooting ............................................................................	6	- 36
7.	WIRING DIAGRAM ....................................................................................			7		- 1
	7.1	Interconnect Signal Diagram .............................................................		7		- 1
	7.2	PCB Layout and Connector Signal List .............................................		7		- 3
	7.3	Resistance Check ..............................................................................		7		- 15
	7.4	Short Plug Setting ..............................................................................		7		- 17
8.	PARTS LIST ..............................................................................................			8		- 1
Appendix A			Centronics Parallel Interface .................................................	A - 1
		B LocalTalk (RS422) Serial Interface ........................................		B - 1
		C	Diagnostics Test.....................................................................	C - 1
		D	Maintenance Utility Overview................................................	D - 1
		E	Multi-Purpose Feeder Maintenance ......................................	E - 1
		F High Capacity Second Paper Feeder Maintenance .............		F - 1

1. CONFIGURATION

1.CONFIGURATION

1.1System Configuration

OKIPAGE 6e and OKIPAGE 6ex consist of control and engine blocks in the standard configuration, as shown in Figure 1-1.

In addition, the options marked with asterisk(*) are available.

	Operator Panel
	(OKIPAGE 6ex Only)
		Engine Unit
Paper
Cassette
* Legal/Universal	Paper Feed Mechanism
Paper Tray	(First Tray Unit)	Face
		Down
	Electrophotographic	Stacker
	Processing Unit
		Power Supply
		and Sensor PCB
* Hight Capacity	Main Control PCB
Second Paper Feeder
* Multi-Purpose
Feeder

*OKIPAGE 6ex	: PS Board with RAM	* : Optional
*OKIPAGE 6e/6ex	: RAM Board

Figure 1-1

1 - 1

1.2Printer Configuration

The printer unit consists of the following hardware components:

•Electrophotographic Processor

•Paper Feeder

•Main Control PCB

•Operator Panel (OKIPAGE 6ex Only)

•Power Supply Unit

•PS Board (OKIPAGE 6ex Only)

The printer unit configuration is shown in Figure 1-2.

Upper cover

Operator panel assy

Toner cartridge (consumables)

Stacker cover assy

Fusing unit

Image drum unit (consumable)

PS Board

Main Control PCB
• L5C or L5D:		OKIPAGE6e
• L6A	:	OKIPAGE 6ex

Power supply board

Figure 1-2

1 - 2

1.3Optional Configuration

The options shown below are available for use with OKIPAGE 6e and OKIPAGE 6ex. These are available separately from the printer unit.

(1) 1MB Memory Expansion Board (OKIPAGE 6e/6ex)

(2)SIMM Memory

OKIPAGE 6e :1/2/4/8/16 Mbyte OKIPAGE 6ex :1/2/4/8/16/32 Mbyte

(3) Legal/Universal Paper Cassette/

Legal/Universal cassette

Cassette cover

1 - 3

(4) High Capacity Second Paper Feeder

(5) Multi-Purpose Feeder

1 - 4

1.4Specification

(1)	Type	Desktop
(2)	External dimensions	Height 6.3”	(160 mm)
	(excludes protruding	Width 12.6”	(320 mm)
	portion)	Depth 14.17”	(360 mm)
(3)	Weight	8 kg
(4)	Developing method	Dry electrophotography
	Exposing method	LED stationary head
(5)	Paper used	<Type>

•Standard paper

–Xerox 4200 (20 lbs)

•Application paper (manual face-up feed)

–Label

–Envelope

–OHP paper (Transparency)

<Size>

		•	Standard sizes
			– Letter (ODA)
			– Legal (option)
			– Executive
			– Envelope
			– A4
			– A5
			– B5
			– A6
		•	Applicable sizes
			– Width:	3.94” to 8.5” (100 to 216 mm)
			– Length:	5.83” to 14” (148 to 355.6 mm)
		<Thickness>
			– Automatic feed:	16 to 24 lbs (60 to 90 g/m2)
			– Manual feed:	Label, OHP paper (transparency)
				Envelope
(6)	Printing speed	First print:		17 sec.
		Continuous print:		6 sheets/min. for letter size paper
		Warm-up time:		60 sec. [at room temperature 77˚F
				(25˚C) and rated voltage (120 VAC)]
(7)	Paper feeding method	Automatic feed or manual feed
(8)	Paper delivery method	Face down/face up
(9)	Resolution	300 x 300 dots/inch (OKIPAGE 6e)
		600 x 600 dots/inch (OKIPAGE 6ex)
		600 x 1200 dots/inch (OKIPAGE 6ex)

1 - 5

(10) Power input	120 VAC +5.5%, –15%
	230 VAC +15 %, –15%
(11) Power consumption	Peak:	Approx. 420W
	Typical operation:	Approx. 160W
	Idle:	Approx. 55W
	Power save mode:	Approx. 15W
(12) Temperature and humidity	During operation:	50 to 90°F (10 to 32°C)
	In storage:	14 to 110°F (–10 to 43°C)
(13) Noise	During operation:	48 dB (A) or less
	Standby:	38 dB (A) or less
(14) Consumables	Toner cartridge kit	2,000 (5% duty)
	Image drum cartridge	20,000	(at continuous printing)
		15,000	(3 pages/job)
		10,000	(1 page/job)

1 - 6

1.5Safety Standards

1.5.1Certification Label

The safety certification label is affixed to the printer at the location described below.

OKIPAGE 6e

OKIPAGE 6ex

230V

1 - 7

1.5.2Warning Label

The warning labels are affixed to the sections which may cause bodily injury. Follow the instructions on warning labels during maintenance.

1 - 8

1.5.3Warning/Caution Marking

The following warning and caution markings are made on the power supply board.

CAUTION

ENGLISH

Heatsink and transformer core present risk of electric shock. Test before touching. FRENCH

Le dissipateur thermique et le noyau du transformateur présentent des risques de choc électrique. Testez avant de, manipuler.

SPANISH

Las disipadores de color el núcel del transformador pueden producir un choque eléctrico. Compruebe antes de tocar.

PORTUGUESE

O dissipador de calor e o núcleo do fransiormador apresentam risco de choque elétrico. Teste antes de focar.

ENGLISH

Circuits maybe live after fuses open.

FRENCH

Il se peut que les circuits soient sous tension une fois que les fusibles ont éfé rerirés.

SPANISH

Las circuitos pueden estar activos una vez que se hayan abierio los fusibles.

PORTUGUESE

Os circuitos podem estar energizados após os fusiveis se queimarem.

1 - 9

2.OPERATION DESCRIPTION

2.OPERATION DESCRIPTION

OKIPAGE 6e, OKIPAGE 6ex consists of a Main Control PCB, a power supply/sensor board, a PostScript board (OKIPAGE 6ex), an operator panel and an electrophotographic process mechanism.

The soft operator panel is used for operation and status display of OKIPAGE 6e and OKIPAGE 6ex.

The operator panel is used for operation and status display of OKIPAGE 6ex.

The OKIPAGE 6e and OKIPAGE 6ex receive data via the host I/F, these then decode, edit and store the data in memory. Bit map image data is successively transferred to the LED head in one dot line units.

OKIPAGE 6e block diagram is shown in Figure 2-1.

OKIPAGE 6ex block diagram is shown in Figure 2-2.

2 - 1

	1MB Memory Board
	(Option)
L5Cor L5D		For optional	L5D
		RAM board	Resident RAM
			1M x 16 DRAM(2M Bytes)
Program & Font		L5C
ROM		Resident RAM
4MB Mask ROM	16 bits	256k x 16 DRAM x 2		High Capacity
			(1M Bytes)			Multi-Purpose
				Second Paper
	DATA					Feeder (Option)
				Feeder (Option)
	BUS
EEPROM
Centronics				M	Drum Motor
parallel I/F			Drum motor &
			Registration motor
			drive circuit	M	Registration Motor
7407
	1 Chip CPU
			FAN Driver	FAN
			FAN ALM
		CH TR DB		LED Head
		HEAT ON
+8V -8V 0V +5V +30V
Reset
circuit
			LSI	Thermistor
Power Supply
Board		Cover	+5V
Inlet sensor 1		open		Charge roller
		switch
Inlet sensor 2	Low voltage			Transfer roller
	generation circuit		High voltage
			generation	Developing
			circuit
Paper sensor				roller
				Toner supply
				roller
Outlet sensor
				Cleaning
				roller
Paper out sensor			Heater drive
				Heater
			circuit
Toner low sensor	AC
	transformer		Filter circuit	AC IN

Figure 2-1 OKIPAGE 6e Block Diagram

2 - 2

		or	LocalTalk I/F (RS422 I/F)
		PS Board with RAM
	1MB Memory Board
L6A-		For optional
		RAM board
		16 bit
Program & Font	32 bit		Resident RAM
ROM
4MB Mask ROM	DATA		1M x 16 DRAM	High Capacity
		16 bit	(2MB)			Multi-Purpose
				Second Paper
	BUS			Feeder (Option)		Feeder (Option)
EEPROM
Centronics				M	Drum Motor
parallel I/F			Drum motor &
			Registration motor
			drive circuit	M	Registration Motor
7407
	1 Chip CPU		FAN Driver	FAN
			FAN ALM
			CH TR DB	LED Head
			HEAT ON
+8V -8V 0V +5V +30V
Reset
circuit
				Thermistor
Power Supply				LSI
Board		Cover		+5V
Inlet sensor 1		open		Charge roller
		switch
Inlet sensor 2	Low voltage			Transfer roller
	generation circuit		High voltage
			generation	Developping
			circuit
Paper sensor				roller
				Toner supply
				roller
Outlet sensor
				Cleaning
				roller
Paper out sensor			Heater drive
				Heater
			circuit
Toner low sensor	AC
	transformer		Filter circuit	AC IN

Figure 2-2 OKIPAGE 6ex Block Diagram

2 - 3

2.1Control Board

The control board consists of a single chip CPU, Program & Font ROM's, one or two DRAMs, an EEPROM, a host interface circuit, and a mechanism driving circuit.

(1)Single chip CPU

The single chip CPU is a custom CPU (32-bit internal bus, 16-bit or 32-bit external bus, 25.54 MHz clock with input frequency from a 12.27 MHz clock) which incorporates the RISC CPU and its peripheral devices, and has the following functions:

Built-in device	Function
Chip select controller	Control of ROM, DRAM and I/O device
Bus controller
DRAM controller
DMA controller	Transfer of image data from DRAM to video output port
Parallel interface controller	Control of Centronics parallel interface
Video output port	Control of LED head
LED STB output port
Timer	Generation of various control timing
	Monitoring of paper running and paper size
Serial I/O port	Control of operator panel, EEPROM, and options
I/O port	Input and output of sensor and motor signals

(2)Program & Font ROM OKIPAGE 6e/6ex

The Program & Font ROM store the PCL5e emulation program and various types of fonts. Mask ROM is used for a Program & Font ROM. The mounting location of this Program & Font ROM varies depending on the type of ROM (for the mounting location see 7.2).

PS Board

The Program & Font ROM store the PostScript program and various types of fonts. Mask ROM is used for a Program & Font ROM (for the mounting location see 7.3).

2 - 4

(3)DRAM OKIPAGE 6e/6ex

The DRAM is a resident memory (OKIPAGE 6e: 1MB(L5C) or 2MB(L5D)/OKIPAGE 6ex: 2MB) used as a buffer, and it stores edited data, image data, DLL data and macro data.

OKIPAGE 6ex with PS Board

The DRAM is a resident memory (2MB on the OKIPAGE 6ex main board plus 0.5MB on the PS board) used as a buffer, and it stores edited data, image data, DLL data and macro data. In the Post Script emulation, it is used as VM and font cache also.

(4)EEPROM

1,024 bit-Electrically Erasable PROM (EEPROM), is loaded with the following kinds of data:

•Menu data

•Various counter data (Page counter, Drum counter)

•Adjusting parameters (LED head drive time, print start position, paper feed length)

(5)Parallel Interface

Parallel data is received from the host system via parallel interface which conforms to the Centronics specification. IEEE 1284 Bi-directional parallel is supported.

2 - 5

2.2PS Board (OKIPAGE 6ex option)

The PS board consists of two Program & Font ROM's, DRAM's, an EEPROM, and a host interface circuit.

(1)Program & Font ROM's

The Program & Font ROMs store the PostScript Level II program and its fonts. Mask ROM is used for the Program & Font ROMs.

(2)DRAM

0.5MB of DRAM's reside on the PS board.

(3)EEPROM

4.096 bit-Electrically Erasable PROM (EEPROM) is mounted on the PS board for storing the PostScript's menu settings.

(4)Local Talk I/F

Apple Talk protocol data is received from the host system via LocalTalk interface. The block diagram is shown in Figure 2-3.

(5)SIMM Socket

One SIMM Socket is mounted on the PS board.

		Program & Font				Resident RAM
		ROM
						(0.5MB)
		4MB Mask ROM

LocalTalk I/F

(RS422 I/F)

SCC

SIMM

EEPROM

Socket

(4K)

85C30

Figure 2-3 PS Board Block Diagram

2 - 6

2.3RAM Board (OKIPAGE 6e/6ex option)

The RAM board consists of DRAM's and a SIMM socket.

(1)DRAM

1MB of DRAM's reside on the RAM board.

(2)SIMM Socket

One SIMM socket is mounted on the RAM board.

	SIMM Socket			Resident RAM
				(1MB)

Figure 2-4 RAM Board Block Diagram

2 - 7

2.4Power Supply Board

The power supply board consists of an AC filter circuit, a low voltage power supply circuit, a high voltage power supply circuit, heater drive circuit, and photosensors.

(1)Low Voltage Power Supply Circuit

This circuit generates the following voltages.

Output voltage	Use
+5 V	Logic circuit supply voltage
+30 V	Motor and fan drive voltage and source voltage for high-voltage supply
+8 V	Analog supply voltage
–8 V	PS board and analog circuit supply voltage

(2)High Voltage Power Supply Circuit

This circuit generates following voltages required for electrophotographic process from +5 V, according to the control sequence from the control board. When cover open state is detected, +5 V supply is interrupted automatically to stop the supply of all high-voltage outputs.

Output		Voltage	Use	Remarks
CH	-1.35 KV		Voltage applied to charging roller
DB	-300	V/+300 V	Voltage applied to developing roller
SB	-450	V/ 0 V	Voltage applied to toner supply roller
TR	+500	V to +4 KV/-750 V	Voltage applied to transfer roller	Variable
CB	+400	V	Voltage applied to clearing roller

(3)Photosensor

The photosensor mounted on this power supply board monitors the paper running state during printing.

2 - 8

The sensor layout diagram is shown in Figure 2-3.

Paper running direction

Exit roller

Outlet sensor

Heat roller

		Transfer roller
		Paper sensor
		Inlet sensor 1
Toner	Inlet	Paper
		end sensor	Registration roller
sensor	sensor 2	Hopping
		roller

Figure 2-5

Sensor	Function		Sensing state
Inlet sensor 1	Detects the leading edge of the paper and gives	ON:	Paper exists.
	the supervision timing for switching from	OFF:	No paper exists.
	hopping operation to feeding operation.
	Monitors paper feeding situation and paper size
	based on the paper arrival time and running
	time.
Inlet sensor 2	Detects the form width.	ON:	A4 or larger
		OFF:	Smaller than A4
Paper sensor	Detects the leading portion of the paper.	ON:	Paper exists.
	Monitors the paper feeding situation.	OFF:	No paper exists.
Outlet sensor	Monitors the paper feeding and size according	ON:	Paper exists.
	to the time of arrival to and leaving past the	OFF:	No paper exists.
	sensor.
Paper end sensor	Detects the end of the paper.	ON:	Paper exists.
		OFF:	No paper exists.
Toner low sensor	Detects the lack of toner.	- - - - -

2 - 9

2.5Electrophotographic Process

2.5.1Electrophotographic Process Mechanism

This mechanism actuates the printing of image data supplied by the control board on the paper by electrophotographic process.

The layout of the electrophotographic process mechanism is shown in Figure 2-6.

2 - 10

Heat roller	LED head	Developing roller	Toner cartridge
Eject roller assy
	Charge roller
		Image drum unit

11 - 2	2 Figure
	6-

Outlet sensor lever	Back-up roller		Hopping roller
		Registration
	Cleaning roller
Paper cassette		roller
	Transfer roller	Inlet sensor lever
		Paper sensor lever

(1)Image Drum Unit

The image drum unit consists of a sensitive drum, a charger, and a developer. The unit forms a toner image on the sensitive drum, using a electrostatic latent image formed by the LED head.

(2)Registration Motor

The registration motor is a pulse motor of 48 steps/rotation, that is two-phase excited by the signal from the Main Control PCB. It drives the hopping and registration rollers via two oneway clutches according to the direction of rotation.

(3)Drum Motor

The drum motor is a pulse motor of 48 steps/rotation that is two-phase excited by the signal from the Main Control PCB and is the main motor of this mechanism.

(4)LED Head

Image data for each dot line from the control board is received by the shift register and latch register. The 2496 LED's (OKIPAGE 6e)/4992 LED's (OKIPAGE 6ex) are driven to radiate the image data on the image drum.

(5)Fuser

The fuser consists of a heater, a heat roller, a thermistor and a thermostat.

The AC voltage from the power supply board is applied to the heater controlled by the HEATON signal from the control board. This AC voltage heats the heater. The Main Control

PCB monitors the heat roller temperature via the thermistor, and regulates the heater roller to a predetermined temperature (165°C) by connecting or disconnecting the AC voltage supply to the heater.

When an abnormal rise of the heater roller temperature takes place, the thermostat of the heater voltage supply circuit becomes active and forcibly cuts the AC voltage supply.

2 - 12

2.5.2Electrophotographic Process

The electrophotographic processing is outlined below. The electrophotographic printing process is shown in Figure 2-7.

1 Charging

The surface of the image drum is charged uniformly with a negative charge by applying the negative voltage to the charge roller.

2Exposure

Light emitted from the LED head irradiates the negatively charged surface of the image drum. The surface potential of the irradiated portion of the image drum surface becomes lower, forming the electrostatic latent image associated with the print image.

3Developing and toner recovery

When the negatively charged toner is brought into contact with the image drum, it is attracted to the electrostatic latent image by static electricity, making the image visible.

At the same time, the residual toner on the image drum is attracted to the developing roller by static electricity.

4 Transfer

When paper is placed over the image drum surface, the positive charge which is opposite in polarity to that of the toner, is applied to the reverse side by the transfer roller. The toner is attracted by the positive charge and is transferred onto the paper. This results in the transfer of the toner image formed on the image drum onto the paper.

5Temporary cleaning

Residual toner which remains on the image drum without being transferred is evened out by the cleaning roller and is temporarily attracted to the cleaning roller by static electricity.

6Fusing

The toner image transferred onto the paper is fused to the paper by heat and pressure.

An electrophotographic process timing chart is shown in Figure 2-8.

2 - 13

14 - 2	2 Figure
	7-

Paper eject roller

		Paper		Image data
		eject
		(Face down)
		Power		LED head
		supply
		Charger
		roller
Paper						Power
eject		Power		Exposure	Doctor	supply	Toner
roller					blade	(Bias voltage)	cartridge
		supply
	Paper		Charging
Paper	path	Cleaning			Developing	Toner
	selector	roller	Cleaning	Developing	roller	supply
eject						roller

(Face up)

Outlet sensor	Fusing				Paper sensor		Inlet sensor
									Paper
				Transfer		Paper		Paper
						registration		supply	tray
Heater roller		Back-up roller	Power	Transfer		Registration roller		Hopping
			supply	roller				roller
Paper eject	Fusing	Cleaning		Transfer	Image	Paper feed		Paper hopping
					production
					developing

Path of paper feeding

Direction of rotation of the image drum

15 - 2	2 Figure
	8-

PRINT-N

PRDY-N DM-ON-N

RM-ON

INSNS

OUTSNS-N

Feed start

Inlet Sensor OFF

Outlet Sensor OFF

Feed stop