OKI ES1624n, ES1624MFP Service manual

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Oki Data CONFIDENTIAL

ES1624n/ES1624MFP

Printer Maintenance Manual

050901A

Page 2

Oki Data CONFIDENTIAL

42615101TH Rev.5 2 /

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Oki Data CONFIDENTIAL

PREFACE

This manual describes the procedures of the maintenance of the ES1624n printers.

The document is produced for maintenance personnel use. For details on the procedures for handling the ES1624n of printers, see its user documentation.

Note!

• The descriptions in this manual are subject to change without prior notice.

• In preparing the document, efforts have been made to ensure that the information in it is accurate. However, errors may be crept into the document. Oki Data assumes no responsibility for any damage resulting from, or claimed to be the results of, those repairs, adjustments or modifications to the printers which are made by users using the manual.

• The parts used for the printers are sensitive and, if handled improperly, may be damaged. It is strongly recommended that the products are maintained by maintenance men registered with Oki Data.

• Remove static electricity before working.

42615101TH Rev.5 3 /

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Oki Data CONFIDENTIAL

CONTENTS

1. SPECIFICATIONS ............................................................................................... 7

1.1 System Configuration ........................................................................................................... 7

1.2 Printer Configuration .......................................................................................................... 10

1.3 Option Configuration .......................................................................................................... 13

1.4 Specifications ..................................................................................................................... 14

1.5 INTERFACE SPECIFICATIONS ........................................................................................ 18

1.5.1 Parallel Interface Specifications (ES1624n) ........................................................ 18

1.5.1.1 Parallel Interface ................................................................................... 18

1.5.1.2 Parallel Interface Connector and Cable ................................................ 18

1.5.1.3 Parallel Interface Level .......................................................................... 18

1.5.1.4 Timing Charts ........................................................................................ 19

1.5.1.5 Parallel I/F Signals ................................................................................ 20

1.5.2 Universal Serial Bus (USB) Interface Specifications(ES1624n)............................... 21

1.5.2.1 USB Interface ........................................................................................ 21

1.5.2.2 USB Interface Connector and Cable ..................................................... 21

1.5.2.3 USB Interface Signals ........................................................................... 21

1.5.3 Network Interface Specifications(ES1624n) ..........................................................22

1.5.3.1 Network Interface .................................................................................. 22

1.5.3.2 Network Interface Connector and Cable ............................................... 22

1.5.3.3 Network Interface Signals ..................................................................... 22

2. OPERATION DESCRIPTION ............................................................................ 23

2.1 Electrophotographic Process Mechanism .......................................................................... 23

2.2 Printing Processes ................................................................................................................ 28

3. PRINTER INSTALLATION ................................................................................. 38

3.1 Precautions and Prohibition .................................................................................................. 38

3.2 Printer Unpacking Procedure ................................................................................................40

3.3 Printer Installation Instructions .............................................................................................. 41

3.4 Packed Units and Attachments ............................................................................................. 42

3.5 Assembly Procedure ............................................................................................................. 43

3.5.1 Printer Main Body .................................................................................................... 43

3.5.2 Power Cable Connection ......................................................................................... 48

3.5.3 Installation of Optional Components ........................................................................ 51

3.5.4 Checking of Optional-Component Recognition........................................................ 60

3.6 MenuMap Printing ................................................................................................................. 61

3.7 Connection Procedures ........................................................................................................ 64

3.8 Checking of User Paper ........................................................................................................ 66

4. PARTS REPLACEMENT ................................................................................... 67

4.1 Precautions in Replacing Parts .......................................................................................... 67

4.2 Part Replacement Procedures ........................................................................................... 69

4.2.1 Left Side Cover ..................................................................................................... 69

4.2.2 Right Side Cover .................................................................................................. 70

4.2.3 Face-Up Tray........................................................................................................ 71

4.2.4 Rear Cover ........................................................................................................... 72

4.2.5 LED Assy / LED Assy-Springs.............................................................................. 73

4.2.6 Controller PCB...................................................................................................... 74

4.2.7 Print Engine Controller PCB ................................................................................. 76

4.2.8 Top Cover Assy .................................................................................................... 79

4.2.9 Top Cover ............................................................................................................. 80

4.2.10 Controller Panel Assy ........................................................................................... 81

4.2.11 Board-PRP / Top Cover Handle ........................................................................... 82

4.2.12 Low-Voltage Power Unit / ID-FAN / Low-Voltage Power Unit FAN /

Hopping Motor / Fuser Motor................................................................................ 83

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Oki Data CONFIDENTIAL

4.2.13 Board-PRT............................................................................................................ 84

4.2.14 Guide-Eject Assy / Color Registration Assy / Board-PRM.................................... 85

4.2.15 FAN (Fuser) / Belt Motor / High Voltage Power Supply Board / Cover Open Switch 87

4.2.16 MPT-Assy ............................................................................................................. 88

4.2.17 Feeder Unit / Board-RSF / MPT Hopping Roller / Frame Assy Separator /

Cover-Front .......................................................................................................... 89

4.2.18 Main Motors / Solenoid / Paper-End Sensor ........................................................ 90

4.2.19 Feed Roller ........................................................................................................... 92

4.2.20 Shaft Assy-Eject (FU) / Shaft Assy-Eject (FD) / Eject Sensor .............................. 93

4.2.21 Fuser Unit ............................................................................................................. 94

4.2.22 Belt Unit ................................................................................................................ 95

4.3 Parts to lubricate ................................................................................................................ 96

5. MAINTENANCE MENU ................................................................................... 111

5.1 System Maintenance Menu(For Maintenance Staff) ........................................................ 111

5.2 Maintenance Utility ........................................................................................................... 114

5.3 Changing the display language ........................................................................................ 118

5.4 Maintenance Menu Function of the User Menu ............................................................... 119

5.4.1 Maintenance Menu(For End-Users) ................................................................... 119

5.4.2 Self-diagnostic Mode .......................................................................................... 120

5.4.2.1 Operator panel .................................................................................... 120

5.4.2.2 Normal self-diagnostic mode (level 1) ................................................. 124

5.4.2.2.1 Entering self-diagnostic mode (level 1) ............................... 126

5.4.2.2.2 Exiting self-diagnostic mode ............................................... 126

5.4.2.3 Switch scan test .................................................................................. 127

5.4.2.4 Motor and clutch test ........................................................................... 130

5.4.2.5 Test printing ........................................................................................ 132

5.4.2.6 Color registration adjustment test ....................................................... 137

5.4.2.7 Print density adjustment test ............................................................... 137

5.4.2.8 Consumable counter display ............................................................... 138

5.4.2.9 Counter display of numbers of prints and images ............................... 138

5.4.2.10 Switching between Factory and Shipping modes ............................... 139

5.4.2.11 Self-diagnosis function setting ............................................................ 140

5.4.2.12 Waste toner counter display................................................................ 141

5.4.2.13 LED head serial number display ......................................................... 141

5.4.2.14 Operator panel display ........................................................................ 142

5.4.3 Printing on Controller-Equipped Printer on a Standalone Basis ......................... 147

5.4.4 Switch Press Functions at Printer Power-On ..................................................... 148

5.5 Settings after Parts Replacement .................................................................................... 149

5.5.1 Instructions to exchange the engine control board ............................................. 149

5.5.2 EEPROM Setting after ARC Board/SPY Board/SPA Board Replacement ........ 152

5.5.3 Destination Setting [Check Method: Printing demo page (ES1624n),

Printing Menu Map (ES1624n)] .......................................................................... 153

5.6 Settings by Hand for Print Density Adjustment ................................................................ 155

6. REGULAR MAINTENANCE ............................................................................ 156

6.1 Parts Replaced Regularly ................................................................................................ 156

6.2 Cleaning ........................................................................................................................... 156

6.3 Cleaning the LED Lens Array .......................................................................................... 156

6.4 Cleaning the Pick-up Roller and the Pad ......................................................................... 158

6.5 Cleaning the Printer Inside ............................................................................................... 159

7. TROUBLESHOOTING PROCEDURES .......................................................... 161

7.1 Precautions before troubleshooting ................................................................................. 161

7.2 Precautions before handling an abnormal image ............................................................ 161

7.3 Precautions upon handling an abnormal image............................................................... 161

7.4 Preparing for Troubleshooting ......................................................................................... 161

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Oki Data CONFIDENTIAL

7.5 Troubleshooting Procedure .............................................................................................. 161

7.5.1 LCD message list ............................................................................................... 162

7.5.2 Preparing for troubleshooting ............................................................................. 174

7.5.2.(1)LCD Display Malfunction ................................................................................. 176

7.5.2.(2)Irregular Operation of the device after turning on the power ........................... 179

7.5.2.(3)Paper Feed Jam(Error 391:1st Tray)............................................................... 189

7.5.2.(4)Paper Feed Jam (Error 390:Multi-purpose Tray)............................................. 191

7.5.2.(5)Paper Path Jam(Error 381) ............................................................................. 193

7.5.2.(6)Paper Exit Jam(Error 382)............................................................................... 198

7.5.2.(7)Duplex Print Jam(Error 370,371,372,373,383) ............................................... 201

7.5.2.(8)Paper Size Error (Error 400) ........................................................................... 203

7.5.2.(9)ID Unit Up-Down Error(Service Call 140-143)................................................. 204

7.5.2.(10)Fuser Unit Error(Error 170-177) .................................................................... 205

7.5.2.(11)Motor Fan Error(Error 120,127,051) .............................................................. 206

7.5.2.(12)Print Speed is Slow (Low Performance)........................................................ 207

7.5.2.(13)Option unit is not recognized ......................................................................... 207

7.5.2.(14)LED head is not recognized(Error 131,132,133,134) .................................... 208

7.5.2.(15)Toner cartridge is not recognized(Error 540,541,542,543) ............................ 209

7.5.2.(16)Fuse Cutout Error (Error 150-155) ................................................................ 213

7.5.2.(17)Dew Condensation Errors (Error 123) ........................................................... 213

7.5.3 Image Problem Troubleshooting ........................................................................ 214

7.5.3.(1)Color is totally pale (Fig.7.2 A )........................................................................ 215

7.5.3.(2)Background is dirty (Fig.7.2 B ) ....................................................................... 216

7.5.3.(3)Blank Print (Fig.7.2 C ) .................................................................................... 217

7.5.3.(4)Vertical lines are printed .................................................................................. 218

7.5.3.(5)Cyclic Print Trouble (Refer to Fig.7.2 E )......................................................... 219

7.5.3.(6)Color drift is wide. ............................................................................................ 220

7.5.3.(7)Solid Black Print .............................................................................................. 221

7.5.4 Actions Taken after Forced HDD/Flash Initialization .......................................... 222

7.5.5 Network Troubleshooting.................................................................................... 223

7.5.6 Displaying Details of Service Call Error Codes (ES1624n) ................................ 224

7.6 Fuse Checking ................................................................................................................. 225

8. CONNECTION DIAGRAM ............................................................................... 226

8.1 Resistance Checks .......................................................................................................... 226

8.2 Program/Font ROM Layouts ............................................................................................ 230

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1. SPECIFICATIONS

1.1 System Configuration

ES1624n

Figure 1-1-1 shows the system configuration of ES1624n

IN1 IN2 WR

Oki Data CONFIDENTIAL

HEAT

Color

BELT

HOP

CID

MID

YID

Belt Unit

Registration

Belt Unit Fuse

Board-Right

Registration

Cut-Out

Board-Left

Driver Relay Board

Sensor

Density

Up & Low/

Fuser Fuse Cut-Out/

EXIT

Sensor

Thermistor

Inlet

Fuser

Duplex Board 2nd Tray Board

HDD

LAN, USB, Centro I/F

LVDS

CU Board

Front Sensor Board

CU-FAN

Video

Interface

fsync × 4,

Isync, wclk)

(data8bit × 4,

Driver

KID

Solenoid

Paperfeed

1st

P. E

Sensor

DCON

Command

CU Area

50MHz

DCON I/F, LSYNC

Interface

PU-Board

Humidity Signals

Environment Temperature

8M bit

FLASH

SRAM

MCON CPU

256Kbit

Color Registration,

Fuse Cut-Out,

28MHz

Signals

Density, Thermistor

Exit,

Motor Control

EEPROM

0VL, 0VP

3.3V, 5V, 24V,

Control, etc

Fan, Heater

High Voltage Interface,

Fan Control, Cover-Open

FAN

Thermistor

Heater Frame

AC-SW

FAN

Low-Voltage

Y LED HEAD

K LED HEAD

C LED HEAD

M LED HEAD

Board

Operator Panel

Toner Sensor Board

Sensor

Environment

cut-out

Image drum fuse

sensor

C toner

sensor

M toner

sensor

Y toner

sensor

K toner

Open

Cover-

Belt

Thermistor

Fusing

Sensor

FAN

High Voltage Board Low Voltage Board

Down

ID UP/

K-ID Y-ID M-ID C-ID

Figure 1-1-1

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1.2 Printer Configuration

The inside of ES1624n printers is composed of the following:

• Electrophotographic Processor

• Paper Paths

• Controller Block (CU and PU)

• Operator Panel

• Power Units (High Voltage Unit and Low Voltage Unit)

Figure 1-2-1 shows the configuration of each printer.

Oki Data CONFIDENTIAL

Figure 1-2-1

42615101TH Rev.5 10 /

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1.3 Option Configuration

The following options are available for ES1624n.

(1) 2nd Tray

(2) Duplex Unit

Oki Data CONFIDENTIAL

(3) Expansion Memory 64 MB

Recommend to add an optional memory for duplex print, banner print.

(4) Expansion Memory 64/256 MB

Recommend to add an optional memory for duplex print, banner print.

(5) Hard Disk

(6) Upgrade DIMM

42615101TH Rev.5 13 /

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1.5 INTERFACE SPECIFICATIONS

1.5.1 Parallel Interface Specifications (ES1624n)

1.5.1.1 Parallel Interface

Item Description

Mode Compatibility mode, Nibble mode, ECP mode

Data bit length 8 bits: Compatibility mode, 4bits: Nibble mode,9 bits: ECP mode

1.5.1.2 Parallel Interface Connector and Cable

1) Connector

Printer side: 36-pin receptacle

Type 57LE-40360-12 (D56) (made by Daiichi Denshi) or equivalent

Cable side: 36-pin plug

Type 57FE-30360-20N (D8) (made by Daiichi Denshi) or equivalent

Oki Data CONFIDENTIAL

Connector Pin Arrangement Viewed from Cable Side

2) Cable

Cable length: 1.8 m max.

(A shielded cable composed of twisted pair wires is recommended for noise prevention.)

1.5.1.3 Parallel Interface Level

LOW: 0 V to +0.8 V HIGH: +2.4 V to 5.0 V

118

1936

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1.5.1.4 Timing Charts

Compatible mode

a) Data receiving timing

PARALLEL DATA (DATA BITs 1 to 8)

nStrobe

0.5 µs min.

0.5 µs max.

0.5

s min.

Oki Data CONFIDENTIAL

BUSY

0 min.

nAck

0.5 µs to 3 µs

b) On-line (off-line switching timing by ON-LINE SW)

ON-LINE SW

BUSY

SELECT

100 ms max.

c) Off-line (on-line switching timing by ON-LINE SW)

ON-LINE SW

BUSY

0 min.

SELECT

ACKNOWLEDGE

d) nlnit timing (invalid by default)

* Menu-set

50 µs min.

INPUT. PRIME

BUSY

SELECT

ACKNOWLEDGE

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5µs max.

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Oki Data CONFIDENTIAL

1.5.1.5 Parallel I/F Signals

Table 1-1 shows interface signal names and pin numbers.

Table 1-1 Signals

Pin No. Signal Name Signal Direction Functions

1 Nstrobe (HostClk) →PR Pulse for reading data in at trailing edge.

2 DATA 1

3 DATA 2

4 DATA 3 8-bit parallel data.

5 DATA 4 →PR Each signal is HIGH when data is logical 1 and

6 DATA 5 LOW when it is logical 0.

7 DATA 6

8 DATA 7

9 DATA 8

10 nAck (PtrClk) ←PR Indicates the completion of data reception.

11 Busy (PtrBusy) ←PR Indicates whether the printer is ready for receiving

data. Data cannot be received while the signal is

HIGH.

12 PError (AckDataReq) ←PR Indicates paper error when held HIGH.

13 Select (Xflag) ←PR HIGH without exception when the parallel

interface is enabled.

14 NAutoFd (HostBusy) →PR Used in bidirectional communication.

15 - - Unassigned.

16 GND - Signal ground.

17 FG - Chassis ground.

18 +5V ←PR Used for supplying +5V. Power cannot be

supplied to the outside of the printer.

~ GND - Signal ground.

31 Nlnit (nlnit) →PR Initializes the printer when held LOW.

32 NFault (nDataAvail) ←PR LOW during alarm.

33 GND - Signal ground.

34 - - Unassigned.

35 HILEVEL ←PR Pulled up to +5V at 3.3KΩ inside the printer.

36 Nselectin →PR Used in bidirectional communication. Low without

(IEEE 1284 active) exception in compatible mode.

Note:

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Parenthesized signal names are used in nibble mode. Only functions in compatible mode are listed. This printer supports the IEEE std 1284-1994 nibble mode. Note that, when used with personal computers or cables that do not comply with the standards, the printers may exhibit unpredictable behavior.

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1.5.2 Universal Serial Bus (USB) Interface Specifications(ES1624n)

1.5.2.1 USB Interface

(1) Basic specifications

Conforms to USB specification, revision 1.1.

(2) Transmission mode

Full speed (max. 12 Mbps + 0.25%)

(3) Power Control

Self-power device

1.5.2.2 USB Interface Connector and Cable

(1) Connector

Printer side: Type B receptacle

Upstrem port

UBB-4R-D14T-1 (made by JST) or equivalent

Oki Data CONFIDENTIAL

Connector pin layout

Cable side: Type B plug

(2) Cable

Cable length: 5 m max. (cable compliant with USB specification, revision 1.1)

(A shielded cable must be used.)

1.5.2.3 USB Interface Signals

1 Vbus Power Supply (+5V) (red) 2 D - Data transmission (white) 3 D + Data transmission (green) 4 GND Signal ground (black)

Shell Shield

R1 Function

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1.5.3 Network Interface Specifications(ES1624n)

1.5.3.1 Network Interface

(1) Basic specifications

Network protocol TCP/IPSpecification Network layer

ARP, RARP, IP, ICMP

Transport layer

TCP, UDP

Application layer

LPR, FTP, TELNET, HTTP, BOOTP, SMTP

1.5.3.2 Network Interface Connector and Cable

(1) Connector

100 BASE-TX / 10 BASE-T

Connector pin layout

Oki Data CONFIDENTIAL

(2) Cable

RJ-45 anti-Shield twist pair cable with connector (Category 5 recommended)

1.5.3.3 Network Interface Signals

Pin No. Signals Signal Direction Functions

1 TXD+ FROM PRINTER Send Data +

2 TXD- FROM PRINTER Send Data -

3 RXD+ TO PRINTER Received Data +

4 - - Unassigned

5 - - Unassigned

6 RXD- TO PRINTER Received Data -

7 - - Unassigned

8 - - Unassigned

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2. Operation Description

2.1 Electrophotographic Process Mechanism

(1) Electrophotographic Process

Following describes the outline of an electrophotographic process incorporated into printers.

1. Charging Applying a voltage to a charging (CH) roller charges the surface of an optical photoconductive (OPC) drum.

2. Exposure The surface of the drum having a charge is exposed to light an LED head emits under each image signal. Segments of the surface have a reduced charge according to the intensities of the light they receive, a static latent image being created on the surface based on electrical potentials on the surface

3. Development Charged toner is attracted to the latent image of the drum by static electricity and makes the image visible on the surface of the drum.

Oki Data CONFIDENTIAL

4. Transfer Paper is brought into contact with the drum, and applied with a charge by a transfer roller from the back, the toner image being transferred to the paper.

5. OPC Drum Cleaning A drum cleaning blade removes residual toner from the drum after the transfer.

6. Transfer Belt Cleaning A belt cleaning blade removes residual toner from a transfer belt.

7. Fusing Heat and pressure fuses the toner image to the paper.

(2) Charging

Voltage is applied to a CH roller contacting the surface of an OPC drum, depositing a charge over the surface.

CH Roller

Power

Supply

Unit

OPC Drum

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Oki Data CONFIDENTIAL

(3) Exposure

The surface of the charged drum is exposed to light emitted from an LED head. Charges of segments of the surface are reduced according to the intensities of the light the segments receive, a static latent image being created on the surface.

LED Head

CH Roller

Power

Supply

Unit

OPC Drum

(4) Development

Toner is attracted to the latent image on the surface of the drum, making the image a toner image.

Paper

1. The sponge roller supplies toner onto the developing roller.

Developing Blade

LED Head

OPC Drum

CH Roller

OPC Drum

Developing Roller

2. The latent image on the surface of the drum is made visible by the toner.

Sponge Roller

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Oki Data CONFIDENTIAL

(5) Transfer

The paper made contact with the surface is applied with a charge by the roller from the back. Applying high voltage provided by a power supply to the roller transfers the roller-induced charge to the surface of the paper at the contact between the roller and the paper, attracting the charged toner from the surface of the drum to the surface of the paper.

OPC Drum

-+-

Transfer Roller

-+-+-+-+-+-

-+-

Paper

Transfer Belt

Power

Supply

Unit

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Oki Data CONFIDENTIAL

(6) Fusing

When passing between a heat roller and a backup roller, the toner image transferred to the paper is fused into place with heat and pressure. A safety thermostat is provided and, when the temperature of the heat roller rises to or exceeds a predetermined temperature, it opens, cutting off voltage supply to the heater.

Thermostat

Thermistor

Heat Roller

Halogen Lamp

Paper

Backup Roller

Fusing Temperature Settings

Media Weight

Paper Type Settings

Light

Heavy

Light

Medium

Heavy

U.Heavy

OHP

Thermistor

Temperature Settings

Warm

High

Warm

Low

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Oki Data CONFIDENTIAL

(7) OPC Drum Cleaning

Unfused, residual toner on the drum is scraped off with a drum cleaning blade, and collected in the waste toner area of a toner cartridge.

Waste Toner Area

Toner Cartridge

Image Drum (ID) Unit

Drum Cleaning Blade

-+-

-+-+-+-

-+-

(8) Transfer Belt Cleaning

Residual toner on a transfer belt is scraped off with a belt cleaning blade, and collected in the waste toner box of a transfer belt unit.

Transfer Belt

Waste Toner Box

Belt Cleaning Blade

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2.2 Printing Processes

Paper fed from a tray 1 or 2 is forwarded by Hopping roller, Registration Roller L and Feed roller. When feeding paper from a multiple tray, it is forwarded by a MPT Hopping roller and Registration Roller U. Then, the paper is moved onto a transfer belt and, through K, Y, M and C electrophotographic processes performed taking their turns, a yet-to-be-fused toner image is produced on the paper. While the paper passes through a fuser unit, heat and pressure fuses the toner to the paper. After the fusing process, the paper is ejected to a face-up or face-down stacker, whichever is selected according to whether the face-up stacker is opened.

These operations are performed in single-side printing. Following are operations in two-side (duplex) printing.

In duplex printing, paper passed through a fuser unit after it is first printed on the back is fed into a duplex unit via a dup-in separator. Reversing roller’s reversing operation sends the paper via a paper reversing path into the duplex unit. After Feed rollers on a paper path in the duplex unit pass the paper through the unit, the paper is fed via a paper feeding path routed from the unit. Then, the paper is forwarded to the same route from the tray. After that, the same operation as that performed after the paper moving by the first registration roller L in single-side printing using tray feeding is performed.

Oki Data CONFIDENTIAL

Face-up Stacker

Dup-In Separator

Reversing Roller

Face-down Stacker

Heat Roller

Halogen Lamp

Backup Roller

Paper Reversing Path

MPT Hopping Roller

Transfer Belt

MPT

Registration Roller U

Feed Rollers

Registration Roller L

Hopping Roller

Sub Roller

Feed Roller

Hopping Roller

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Oki Data CONFIDENTIAL

(1) Paper Feed from 1st Tray

1. As indicated in Figure 2-1, when the solenoid is ON, the registration motor rotates (CCW), and transports the paper until IN1 sensor turns ON. (The hopping roller rotates when the solenoid is ON.)

2. When IN1 sensor is ON, a constant number of sheets are transported against registration roller L. (This corrects paper skewing.)

3. As indicated in Figure 2-2, the solenoid is turned OFF and paper is fed with registration roller L. (The registration roller L feeds the paper when the solenoid is OFF.)

Registration Roller U

(Drive)

WR Sensor

Hopping Gear Assy

Solenoid Lever

(Solenoid ON)

Sub Roller

(Drive)

Hopping Roller

(Drive)

Paper

Figure 2-1 Figure 2-2

(2) Paper Feed from MPT

1. As indicated in Figure 2-3, when the solenoid is OFF, the registration motor rotates (CW) and continues to transport paper until IN2 sensor turns ON. (The MPT hopping roller drives the paper until the registration motor rotates in the CW direction.)

2. When IN2 sensor is turned ON, a constant number of sheets are transported against registration roller U. (This corrects paper skewing.)

IN2 Sensor

Registration Roller L

(Stop)

IN1 Sensor

Registration Motor

(CCW)

Registration Roller U

(Drive)

WR Sensor

Solenoid Lever

(Solenoid OFF)

Sub Roller

(Stop)

Hopping Roller

(Stop)

IN2 Sensor

Registration Roller L

(Drive)

IN1 Sensor

Registration Motor

(CCW)

3. As indicated in Figure 2-4, the registration motor rotates (CCW), and transports the paper with registration roller U. (The registration roller U feeds the paper when the registration motor rotates in the CCW direction.)

IN2 Sensor

Registration Roller U

(Stop)

WR Sensor WR Sensor

Hopping Gear Assy

Solenoid Lever

(Solenoid OFF)

MPT Hopping Roller

Paper Paper

Hopping Gear Assy

Solenoid Lever

(Solenoid OFF)

Registration Motor

(CW)

Registration Roller U

(Drive)

IN2 Sensor

Registration Motor

(CCW)

Figure 2-3 Figure 2-4

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Oki Data CONFIDENTIAL

(3) Carrier Belt

1. The running of the carrier belt motor in the direction of the arrow drives the carrier belt. The belt unit sits with one carrier roller immediately below each color’s drum, and the carrier belt between them. By the application of a fixed voltage, the carrier belt and carrier roller feed paper on the carrier belt into the fuser unit, transferring a toner image on each color’s drum.

Drum

Carrier belt

KYMC

Carrier (transfer) roller

Figure 2-5

Carrier (transfer) belt motor

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Oki Data CONFIDENTIAL

(4) ID Unit Up/Down Operations

1. The C-ID motor drives the ID unit up and down.

2. Figure 2-6 indicates ID unit operations during color printing. When the C-ID motor rotates (CCW), the lift uplink slides to the left, and as indicated in Figure 2-6, each ID unit moves DOWN. The printer is now ready for color printing.

3. Figure 2-7 indicates the ID unit operations during monochrome printing. When the C-ID motor rotates (CW), the lift uplink slides to the right, and as indicated in Figure 2-7, all units other than the K-ID moves UP. The printer is now ready for black-and-white printing.

ID Unit Operations During Color Printing

C-ID Unit down

C-ID Unit

M-ID Unit down Y-ID Unit down K-ID Unit down

Lift uplink

C-ID Motor

(CCW)

Figure 2-6

ID Unit Operations During Monochrome Printing

C-ID Unit

C-ID Unit lift up M-ID Unit lift up Y-ID Unit lift up K-ID Unit down

M-ID Unit Y-ID Unit K-ID Unit

M-ID Unit Y-ID Unit

K-ID Unit

Lift uplink

C-ID Motor

(CW)

Figure 2-7

42615101TH Rev.5 31 /

Page 24

Oki Data CONFIDENTIAL

(5) Fuser Unit and Paper Expeller

1. As indicated in Figure 2-8, a single pulse motor drives the fuser unit and expeller roller. The heat drum turns when the fuser motor turns (CCW). This drum transfers the toner image on the paper by high temperature and pressure.

2. At the same time, the expeller roller expels the paper.

Eject Roller

(Drive)

Fuser Unit

Heat Roller

(Drive)

Fuser Motor

(CCW)

Figure 2-8

(6) Operations when the Color Drift Sensor and Density Sensor Cover is Opened

1. As indicated in Figure 2-9, when the fuser motor rotates (CW), the cover open gear rotates and then opens the cover of the color drift sensor and density sensor.

2. When the fuser motor turns in the reverse direction (CCW), the cover open gear bite no longer meshes, and then the color drift sensor and the density sensor cover closes.

Eject Roller

(Stop)

Heat Roller

(Stop)

Cover Open Gear

Fuser Motor

(CW)

Figure 2-9

42615101TH Rev.5 32 /

Page 25

Outline of Color Misalignment Adjustment Method

Adjustment patterns printed on a transfer belt are read using sensors that are installed inside a sensor shutter placed under a transfer belt unit, for adjusting color misalignments. The sensor detects the patterns for adjusting color misalignments. Auto-Start timing for Color registration

• In power-on

• When a cover is closed after the cover is open in a short time

• When printing 400 pages or more after the previous implementation

Toner amounts on the produced patterns, contamination of the sensor with toner, problems with opening or closing of the sensor shutter, or other reasons, a color misalignment adjustment error may occur. No control panel display of the error is provided. In such cases, adjustments on any color misalignments (Section 5.4.2.6) are forced to be executed by the Self-diagnostic Mode and displayed errors must be checked.

Oki Data CONFIDENTIAL

Transfer Belt

Belt Motor

Sensor Shutter

Color Registration Sensor

Belt Waste Toner Box

Color Registration Sensor

Right Color Misalignment Adjustment Pattern

Left Color Misalignment Adjustment Pattern

Belt Cleaning Blade

Color Registration Sensor

42615101TH Rev.5 33 /

Page 26

Oki Data CONFIDENTIAL

How to check errors and Handling of the errors Confirm with the color registration adjustment test of the self-diagnostic mode (Section 5.4.2.6) Handling for each error

• CALIBRATION(L or R), DYNAMICRANGE(L or R) Check 1 Check a connection state of a sensor cable (FFC) if the above description

appears. Correct to a normal state if the connection state is wrong.

Check 2 Check that the surface of the sensor is clean without paper dust and toner.

Wipe it off if it is dirty.

Check 3 Check whether an opening-closing motion of the sensor shutter is normal with

MOTOR&CLUTCH TEST of the self-diagnostic mode. Exchange the shutter unit when the opening-closing motion is not complete.

• BELT REFLX ERR Check 4 Check a cleaning state of the toner left on a belt surface besides the above

Check 1, 2, and 3 if this message appears. Take the belt unit out of the device and check that the belt surface is clearly cleaned by rotating a drive gear in the back at the left side. Exchange a belt unit when a toner of the belt surface is left and it is not clean even if the drive gear rotates.

• (Y or M or C) LEFT, (Y or M or C) RIGHT, (Y or M or C) HORIZONTAL Check 5 Check that a toner is not deficient due to NG color when the above message

appears. Exchange a toner cartridge if needed.

42615101TH Rev.5 34 /

Page 27

Outline of Print Density Adjustment Method

Adjustment patterns printed on a transfer belt are read using sensors that are installed inside a sensor shutter placed under a transfer belt unit, for adjusting print density. Auto-Start timing of Print Density Adjustment

• When environment is different considerably compared to the previous implementation in power-on

• At least 1 or more from 4 ID count values is almost new in power-on

• When ID count value is over 500 from the previous implementation

Toner amounts on produced patterns, contamination of optical sensors with toner, problems with opening or closing of the sensor shutter, or other reasons, a print density adjustment error may occur. No control panel display of the error is provided. In such cases, print density adjustments (Section 5.4.2.7) on defective colors are forced to be executed by the Self-diagnostic Mode and displayed errors must be checked.

Oki Data CONFIDENTIAL

Transfer Belt

Belt Motor

Sensor Shutter

Density Sensor

Belt Waste Toner Box

Belt Cleaning Blade

Print Density Adjustment Pattern

42615101TH Rev.5 35 /

Page 28

Oki Data CONFIDENTIAL

How to check errors and Handling of the errors Confirm with the color registration adjustment test of the self-diagnostic mode (Section 5.4.2.7) Handling for each error

• CALIBRATION ERR, DENS SENSOR ERR Check 1 Check a connection state of the sensor cable when the above message

appears. Correct to a normal state if the connection state is wrong.

Check 2 Check that the surface of the sensor is clean without paper dust and toner.

Wipe it off if it is dirty.

• EDENS SHUTTER ERR Check 3 Check whether an opening-closing motion of the sensor shutter is normal with

MOTOR&CLUTCH TEST of the self-diagnostic mode.

• DENS ID ERR Check 4 Check that there is no abnormal blushing on a drum surface by taking an ID unit

out. Exchange a LED head (Defocusing) or exchange an ID unit. Apply FUSE KEEP MODE of the maintenance menu when a new ID unit is used as a test.

42615101TH Rev.5 36 /

Page 29

Principle of Detection by Toner Sensors

Movements of that sensor lever of a toner cartridge which is powered by an image drum (ID) motor are read by a toner sensor for detecting that the cartridge is low on toner. The lever moves concurrently with movement of a mixing bar placed in the cartridge. With the lever, or the sensor, contaminated with toner etc., or the cartridge not facing the sensor properly due to improper ID unit or toner cartridge installation, the sensor may not properly detect the cartridge being low on toner, causing a toner sensor error.

Sensor Lever

Oki Data CONFIDENTIAL

Principle of the toner counter

After image data is developed to binary data which is printable, Dot counter counts the data as print dots in LSI. Calculate the amount of the used toner with this count value to display a remaining amount. Meanwhile, the toner LOW detection by the toner sensor has a function that Toner LOW is detected when toner quantity in side of the toner cartridge is under a certain amount physically.

Principle of ID, Belt andFuser counter

ID counter : One third of the amount of drum rotation when three sheets of A4 paper is

printed continuously is regarded as one count.

Belt counter : One third of the amount of belt rotation when three sheets of A4 paper is printed

continuously is regarded as one count.

Fuser counter: On the basis of paper length of Leagal 13 inch, if it is 13 inch or less, it is

regarded as 1 count. If it is over 13 inch , the number of counters is determined by multiples of Leagal 13 inch.(Round off to an integer value)

Toner Sensor

Side Plate

Toner Cartridge

42615101TH Rev.5 37 /

Page 30

Oki Data CONFIDENTIAL

3. Printer Installation

3.1 Precautions and Prohibition

• Keep away from high temperatures and open flames.

• Please do not install in a place from which a chemical reaction is started (laboratory etc.).

• Do not install near inflammable solutions such as alcohol or thinner.

• Keep out of reach of children.

• Do not install on an unstable surface (the shaky stand, leaning place, etc.).

• Keep away from dust, humidity and direct sunlight.

• Keep away from the sea breeze and corrosive gases.

• Keep away from sources of vibration.

• Pull the power plug out of the socket and contact with a customer's service centre when the printer

is dropped or the cover is damaged. There is a risk of getting an electric shock and/or causing fire leading to personal injury.

• Do not use a power code, a printer cable, or a ground wire other than those that are indicated in User's Manual. Doing so may case fire.

• Do not insert materials in a vent hole. Doing so may cause an electric shock and/or fire leading to personal injury.

• Do not put a cup with liquids such as water on the printer. Doing so may cause an electric shock and/or fire leading to personal injury.

• Do not touch the fuser and other parts when opened the cover. Doing so may result in getting burns.

• Do not throw toner cartridges and image drum cartridges into fire. Doing so may cause dust explosion leading to get burns.

• Do not use an inflammable spray near the printer. Failure to follow may cause fire since there is an area heating up within the printer.

• Pull the power plug out of the socket and contact with a customer's service centre when the cover is unusually hot, smoking, giving off questionable odour, or making a strange noise. There is a risk of fire.

• Pull the power plug out of the socket and contact with a customer's service centre when a liquid such as water enters in the internal parts of the printer. There is a risk of fire.

• Pull the power plug out of the socket and remove foreign materials such as clips when they fall inside the printer. There is a risk of getting an electric shock and/or causing fire leading to personal injury.

• Do not operate and/or disassemble the printer other than that which is directed in User's Manual. Doing so may cause an electric shock and/or fire leading to personal injury.

42615101TH Rev.5 38 /

Page 31

Oki Data CONFIDENTIAL

• Do not block the vents on the printer.

• Do not place printer directly onto a carpet.

• Ensure printer has adequate ventilation.

• Keep printer way from sources of noise and magnetic fields.

• Do not install near a monitor or television.

• Please lift both sides when moving the printer.

Since this printer has about 25kg of weight, please raise by two or more persons

•

Do not come closer to the paper's exit area when the power is turned on, and while in printing.

Doing so may result in personal injury.

Explain instructions for use and settings to customers, showing instructions of the user’s manual. Especially, explain the power cord and earth cable carefully.

42615101TH Rev.5 39 /

Page 32

3.2 Printer Unpacking Procedure

Personal injuries may occur.

Each printer weighs about 25 kg. Lift it by more than one person.

• Punch four handle holes each on the side, or the end, of the carton box as shown below, to lift it.

Oki Data CONFIDENTIAL

Handle Holes

(each on side or on end)

42615101TH Rev.5 40 /

Page 33

3.3 Printer Installation Instructions

• Printers must be installed in a place that meets the following temperature and humidity conditions:

Ambient Temperature : 10 to 32°C Ambient Humidity : 20 to 80% relative humidity Maximum Wet-Bulb Temperature: 25°C

• Take care not to allow dew condensation on printers.

• When installing printers in an area of which ambient humidity is 30% or less, use a humidifier or

antistatic mat.

Installation Space

• Place printers on a flat table having the size that allows their legs to fit on the table.

• Leave sufficient space around each printer.

Top View

Oki Data CONFIDENTIAL

Side View

60cm

20cm

100cm

20cm

70cm

42615101TH Rev.5 41 /

Page 34

3.4 Packed Units and Attachments

• Check the packed units are free of flaws and dirt.

• Check there are no missed attachments, or damage to the packed attachments.

• Should any defective or unusual conditions are found, contact the section in charge.

Personal injuries may occur.

Each printer weighs about 25 kg. Lift it by more than one person.

■■Printer (main body)

Oki Data CONFIDENTIAL

■■Image Drum Cartridges with Starter Toner Cartridges (four sets) (contained in printer)

Explain that a toner cartridge and image drum cartridge is separable to customers.

■■Printer Software CD-ROM

■■LED Lens Cleaner

■■Power Cord

■■Warranty and Registration Card

■■Users Manual (Setup Guide)

■■Users Manual on CD-ROM

■■Quick Guide

■■Quick Guide Bag

Note!

No printer cables are included in printer packages.

42615101TH Rev.5 42 /

Page 35

3.5 Assembly Procedure

3.5.1 Printer Main Body

Remove Protective Equipment

(1) Remove protection tapes (5) of the front of the printer and protection tapes (2) of the back.

(2) Remove the paper cassette. (3) Pull out the retainer frontward.

Oki Data CONFIDENTIAL

Paper

Protective Tape

OPEN button

(4) Press the OPEN button to open the top cover. (5) Pulling down the lever (blue) of the fuser unit in the direction of the arrow 1, remove the

stopper release (orange color).

Note!

Instruct the user of the printer to be sure to keep the stopper release, which is used for transporting the printer, at hand.

Lever (blue) of Fuser Unit

Retainer

Stopper Release (orange color)

42615101TH Rev.5 43 /

Page 36

Install Image Drum Cartridges

(1) Take image cartridges (Four cartridges) with toner cartridges softly.

Oki Data CONFIDENTIAL

Note!

• Take sufficient care in handling the image drums (green cylindrical parts), which are very sensitive.

• Do not expose the image drum cartridges to direct sunlight, strong light (of about 1500 lux. or more) or, for five minutes or more, room light.

• Make sure that a blue lever of the toner cartridge should not be moved here.

Toner Cartridge

Image Drum Cartridge

(2) Put an image cartridge on a flat desk and remove tape holding a protection sheet. Then,

pull it in the direction of an arrow.

Note!

Make sure to work with an image drum putting on a desk.

Protective sheet 1

Tape

Protective sheet 1

Protective sheet 2

(3) Pull protective sheet 2 in the arrow direction from image drum cartridge.

Protective sheet 2

42615101TH Rev.5 44 /

Page 37

Oki Data CONFIDENTIAL

(4) Make sure the labels of the image drum cartridges have the same colors as the labels

beside the places of the cartridges, respectively.

(5) Reinstall the four image drum cartridges carefully.

Image Drum Cartridge

Label

(6) Turn the blue lever of the toner cartridge in the arrow direction until it stops completely.

Note!

• 1500 pages are printable with Starter toner (a toner cartridge which is attached at the time of purchase) under the condition of A4 and 5% print density.

• Make sure that a lever of the toner cartridge turn in the arrow direction until it stops completely when [REPLACE THE TONER] remains displayed.

• It is invalid to use Starter toner once a regular toner cartridge is used. Use Starter toner up first, and then a regular toner should be used.

• The starter toner should be replaced after displaying [ORDER TONER]. If it is replaced before the display, the correct remaining amount of the toner is not displayed.

Blue Lever

42615101TH Rev.5 45 /

Page 38

Load Paper in Paper Cassette

(1) Slide out the paper cassette.

Note!

Do not remove the rubber from the plate.

(2) Place the paper stopper in the position of the size of print paper.

Paper Stopper

Oki Data CONFIDENTIAL

Paper Guide

Plate

(3) Sufficiently loosen the paper, and jog the paper so as that its edges line up.

(4) Load the paper face down in the paper cassette.

Note!

• Print paper must be placed in the paper cassette so as to touch sides of the paper cassette.

• Loaded print paper must not exceed the position pointed by the inverted triangles

▼▼)(300 sheets for 70-kg paper).

(

(5) Secure the paper with the paper guide. (6) Slide the paper cassette back in.

Place Print side down.

Paper guide

42615101TH Rev.5 46 /

Paper life display

Page 39

Load Paper in MP (Multipurpose) Tray

(1) Open the MP tray and then the paper supporter.

(2) Align the manual feeding paper guide with the size of print paper. (3) Jog the paper so as that its edges line up.

Oki Data CONFIDENTIAL

MP Tray

Manual Feeding Paper Guide

MP Tray

Paper Supporter

Manual Feeding Paper Guide

(4) Insert the paper face up, straight along the paper guides for manual feeding, as far as it

will go.

(5) Press the setup button.

Setup Button

42615101TH Rev.5 47 /

Page 40

Oki Data CONFIDENTIAL

3.5.2 Power Cable Connection

Conditions for Power Supplies

• The following conditions apply to the power supplies of printers: Alternate Current (AC) : 100 V ±10% Power Supply Frequency : 50, or 60 ±2 Hz

• For unstable power supplies, use voltage regulators etc.

• The maximum power consumptions of printers are 950 W. Be sure power supplies have power

supply capacities adequate for the printers.

It may expose you to electric shocks or cause a fire.

• Make sure to turn off printers before attaching and detaching power supply cords and grounding wires to the printers.

• Grounding wires must be connected to dedicated grounding terminals. Never connect them to water or gas pipes, or telephone grounds, lighting conductors or other lines.

• Be sure to insert or remove power supply cords by pushing or pulling on the plugs.

• Insert power supply plugs into receptacle outlets as far as they will go.

• Do not insert or pull out power supply plugs with wet hands.

• Install power supply cords in a location where they will not be trodden, and do not place things on

them.

• Do not tie, in bundles, or knot power supply cords in use for printers.

• Do not use damaged power supply cords for printers.

• Do not use star-burst connections for printers.

• Do not connect a printer to the same receptacle outlet being used for electrical equipment other

than the printer. Connecting a printer such a receptacle outlet, particularly being used for air conditioning, copying or shredding equipment, may cause a malfunction in the printer due to electrical noises. If a printer is connected to such a receptacle outlet by necessity, use a commercially available noise filter or noise-cut transformer.

• For power supply cords of printers, use only those packed with the printers.

• Do not use extension cords for printers. If they are used by necessity, select cords with a rating

of 15 A or more.

• Printers may not function correctly when used with extension cords.

• Do not turn off printers or pull out their power supply plugs while the printers are printing.

• Please disconnect printers from the mains supply if they will not be used for an extended period

of time.

Explain connections of the power cord and earth cable to customers carefully, showing the user’s manual.

42615101TH Rev.5 48 /

Page 41

Connect Power Supply Cord

Oki Data CONFIDENTIAL

Note!

Be certain the power switch is placed in the OFF (O) position. (1) Plug the power supply cord in the printer. (2) After the grounding wire is connected to the grounding terminal. Insert the power supply

cord into the receptacle socket.

Press ON (I) of Power Switch

Grounding Terminal

Grounding Wire

The control panel provides messages as shown below and, after the printer is activated completely, it displays [ONLINE].

R A M C H E C K

I N T I A L I Z I N G

[ONLINE] and [CHECK] lamps, and the backlight blink.

O N L I N E

T R A Y 1

42615101TH Rev.5 49 /

Page 42

Turning off the Printer

Turn off the printer without an internal hard disk (option) and in ES1624n.

Oki Data CONFIDENTIAL

Note!

Do not turn OFF the printer while printing.

In case that an internal hard disk (option) is installed, follow the procedure as shown below without turning off the printer immediately.

Note!

• The internal hard disk may be damaged and unusable if the printer is switched off immediately.

• [SHUTDOWN MENU] is displayed only when an optional internal hard disk is installed.

(1) Press the "MENU +" switch a couple times to show [SHUTDOWN MENU].

(2) Press the "ENTER" switch to show [SHUT DOWN START/EXECUTE].

(3) Press the "ENTER" switch.

[SHUTDOWN] is displayed and shutdown process is executed.

(4) Press the power switch OFF(O) after [TURN OFF POWER/ SHUTDOWN IS COMPLETED]

is displayed.

42615101TH Rev.5 50 /

Page 43

3.5.3 Installation of Optional Components

(1) Extension Memory Installation

ES1624n Expansion Memory

Model name

Memory Size (total memory size)

Oki Data CONFIDENTIAL

None (standard)

MLMEM64C

Note!

• Be sure to use Oki Data genuine memory. Printers do not operate using memory

64MB (64MB)

+64MB (128MB)

other than Oki Data genuine memory.

•Installing 64-MB extension memory in printers is recommended for the printers to print both sides of paper.

• Installing 64-MB extension memory in printers is recommended for the printers to print banner-sheet paper.

• One memory slot is provided.

•

Power Off Printer and Remove Power Supply Cord

Note!

nstalling options to printers while the printers are powered on may cause a problem with the printers.

Open Top Cover and Front Cover

Top Cover

Front Cover

OPEN Button

Handle

42615101TH Rev.5 51 /

Front Cover

Page 44

Remove Side Cover

(1) Loosen the screw (at one place). (2) Remove the side cover. It can become detached by moving it upward and outward.

Front Cover

Screw

Oki Data CONFIDENTIAL

Top Cover

Side Cover

Install Memory

ES1624n

(1) Remove static electricity by bringing a bag into contact with a metal part before the memory

is taken out of the bag. (2) Insert the memory into an empty slot. (3) Make sure that the memory is completely held by the right and left lock lever.

Note!

• Do not touch electronic components and connector terminals.

• Be careful of the memory direction. There is a cutting part to adapt to the connector of

the slot.

Lock Levers

42615101TH Rev.5 52 /

Page 45

Oki Data CONFIDENTIAL

(1) Remove static electricity by bringing a bag into contact with a metal part before the memory

is taken out of the bag. (2) Insert the memory into an empty slot. (3) Make sure that the memory is held completely by the top and bottom lock lever.

Note!

• Do not touch electronic components and connector terminals.

• Be careful of the memory direction. There is a cutting part to adapt to the connector of

the slot.

Lock Levers

Reinstall Side Cover

(1) Reinstall the side cover. (2) Fasten the cover with the one screw. (3) Close the top cover and the front cover.

Front Cover

Screw

Top Cover

Side Cover

42615101TH Rev.5 53 /

Page 46

(2) Second Tray Installation

A second tray expands the printer’s paper holding capacity, and can hold 530 sheets of 70-kg paper in it. A printer equipped with the tray can continuously print those 930 sheets of the paper, using the paper cassette and MP tray that are standard on the printer.

Type: MLTRY-C4C1

Power Off Printer to Remove Power Supply Cord

Oki Data CONFIDENTIAL

Note!

Installing the second tray with the printer powered on may cause a problem with the printer.

Place Printer on Second Tray Unit

Note!

Each printer weighs about 25 kg. Lift it by more than one person.

(1) Align the cuts on the bottom surface of the printer with the protrusions of the second tray

unit. (2) Put the printer on the second tray unit carefully.

For removing the second tray, reverse the installation procedure.

Cut on Bottom Surface of Printer

Protrusion

42615101TH Rev.5 54 /

Page 47

(3) Duplex-Unit Installation

A duplex unit is used for a printer to print both sides of paper.

Note!

Installing extension memory in printers is recommended for the printers to print both sides of paper.

Type: MLDXU-C4C

Power Printer Off to Remove Power Supply Cord

Oki Data CONFIDENTIAL

Note!

nstalling the duplex unit with the printer powered on may cause a problem with the printer.

Remove Protective Tape from Duplex Unit

Install Duplex Unit

(1) Slide the duplex unit into the rear of the printer as far as the unit will go. (2) Be sure the lock piece of the unit is completely engaged in the cut on the rear on each side.

Protective Tape (at two places)

Holes

Lock Pieces

Duplex Unit

42615101TH Rev.5 55 /

Page 48

(4) Internal Hard Disk (ES1624n)

It is an internal hard disk which is added to the printer. It is used when printing for validation, authentication, saving of the print job or buffer printing are implemented or [COLLATE FAIL] is shown in collation copy printing. It is not available to download a font.

Note!

Turn off the power after Shut down menu is executed when an internal hard disk is installed. The hard disk may be damaged and unusable if the printer is switched off immediately.

Oki Data CONFIDENTIAL

Memo

The hard disk is divided into three partitions such as "PCL", "SHARING" and "PSE", and each partition size is allocated as below.

PCL

SHARING

PSE

20%

50%

30%

Power Printer Off to Remove Power Supply Cord, the printer cable

Note!

nstalling the duplex unit with the printer powered on may cause a problem with the printer.

42615101TH Rev.5 56 /

Page 49

Open the top cover and the front cover

(1) Press OPEN button to open the top cover.

OPEN button

Handle

Oki Data CONFIDENTIAL

Top cover

Front cover

(2) Lift up the handle in the center of the front cover, and then, pull the front cover.

Front cover

Note!

It differs from how to open multi-purpose tray (See the following figure.)

Multi-purpose tray

42615101TH Rev.5 57 /

Page 50

Detach the side cover

(1) Slacken a screw. (2) Detach the side cover.

Slide out lifting the top part of the side cover.

Front cover

Screw

Oki Data CONFIDENTIAL

Top cover

Side cover

Memo

Make sure the front cover is open when the side cover is not detached.

[The condition where the front cover is open] [The condition where Multi-purpose tray is open]

Install an internal hard disk

(1) Pull a lock lever of the internal hard disk. (2) Insert the cable of the internal hard disk into the connector on the control base. (3) Sets the internal hard disk to fit the line displayed in "HDD". (4) Fold the lock lever until you hear it click.

Front cover

Multi-purpose tray

Displayed "HDD"

Lock lever

Click

42615101TH Rev.5 58 /

Page 51

Attach the side cover

(1) Attach the side cover. (2) IFix it with a screw. (3) Close the top cover and the front cover.

Oki Data CONFIDENTIAL

Top cover

Front cover

Screw

Side cover

Connect the power code and printer cable to the printer and turn ON the printer

Print MenuMap and confirm that an internal hard disk is appropriately installed

(1) Print MenuMap.

Refer to “ Chapter 3.6 Menu Map Printing” to print MenuMap.

(2) Check the capacity of the internal hard disk is displayed in HDD.

Memo

Note!

In addition, a setting to recognize the internal hard disk in the printer driver is required.

Please refer to Chapter 3-9 if the printer driver is not set up, proceed after the printer driver is installed.

42615101TH Rev.5 59 /

The capacity of the hard disk may differ from the example of the left figure.

Reinstall the internal hard disk when the capacity of HDD is not displayed.

Page 52

3.5.4 Checking of Optional-Component Recognition

Please refer to “3.6 Menu Map Printing” to print MenuMap to confirm that options are correctly installed.

(1) Checking for Proper Extension Memory Recognition

Check Information Contained in MenuMap

Check the total memory size appearing at Total Memory Size on the header of MenuMap.

Oki Data CONFIDENTIAL

(2) Checking for Proper Second Tray Recognition

<Checking for Proper Second Tray Recognition> Check Information Contained in MenuMap Check Tray 2 is in the header part.

(3) Checking for Proper Duplex Unit Recognition

<Checking for Proper Duplex Unit Recognition> Check Information Contained in MenuMap Check [Duplex printing : installed] is in the header of MenuMap.

42615101TH Rev.5 60 /

Page 53

3.6 MenuMap Printing

Make sure that the printer operates normally.

For ES1624n

(1) Set A4 papers in a tray.

(2) Press the "MENU +" switch a couple times to show [Information menu].

(3) Press the "ENTER" switch to show [Menu map Printing/ EXECUTE].

(4) Press the "ENTER" switch.

Menu map printing is started (2pages for ES1624n, Following it, Network Information is printed (4 pages.)

Oki Data CONFIDENTIAL

(Sample) In case of ES1624n

42615101TH Rev.5 61 /

Page 54

3.7 Connection Procedures

Prepare a USB Cable.

Oki Data CONFIDENTIAL

Note!

• No cables are included with the product. Prepare a cable.

• A cable to be prepared must be a USB cable.

• For connecting the printer in USB 2.0 Hi-Speed mode, use a Hi-Speed USB cable.

Power off Printer and Personal Computer

Memo

The USB cable can be plugged in and off with the printer powered on. For the purpose of printer driver and USB driver installation to be performed later, power off the printer.

Connect Personal Computer and Printer

(1) Plug a prepared USB cable in the USB interface connector of the printer. (2) Plug the cable in the USB interface connector of the personal computer.

Note!

Be careful not to plug the USB cable in the network interface connectors; a problem with the printer may result.

USB Interface Connector

42615101TH Rev.5 64 /

Page 55

Prepare a LAN Cable and Power Off Printer and Personal Computer

Connect Personal Computer and Printer

(1) Remove the misplugging prevention cover fitted into the network interface connector of the

printer.

Misplugging Prevention Cover

Oki Data CONFIDENTIAL

(2) Plug the prepared Ethernet cable in the network interface connector of the printer. (3) Plug the cable in the hub.

Network Interface Connector

Prepare a Parallel Port Cable and Power Off Printer and Personal Computer

Connect Personal Computer and Printer

(1) Plug the prepared parallel port cable in the parallel interface connector of the printer, and

secure the cable with the metal fitting. (2) Plug the cable in the parallel interface connector of the computer, and secure the cable with

the screw.

Screw

Metal Fitting

42615101TH Rev.5 65 /

Page 56

3.8 Checking of User Paper

Load the paper in printers used by users, select the settings at MEIDA TYPE and MEDIA WEIGHT and print MenuMap and Demo Page to check no occurrence of peeled off toner.

Oki Data CONFIDENTIAL

Setting values of the operation

WeightTypes

Media weight

Regular

paper*

Postcard*

Envelope*

Label paper

55-64kg (64-74g/m

65-89kg (75-104g/m

90-103kg (105-120g/m

104-172kg (121-200g/m

Less than 0.1-0.17mm

)

0.17-0.2mm

Transparency

film

: [Light] is set as factory-default of media type.

: Media weight and type can be set by the operation panel and the printer driver. The printer

Light

Medium

Heavy

Ultra heavy

Thicker paper

Thickest paper

panel

Media type *

Light

Label paper

Transparency

film

Setting *

[Media weight] of the

printer driver

Ultra heavy

Label paper 1

Label paper 2

Transparency

Light

Medium

Heavy

film

for

driver takes priority if it is set in the printer driver. Images are printed out by the setting of

the operation panel when [Auto selection] is set in [Feed tray] or [Printer setting] is set in

[Media weight].

: The ream weight of the paper for duplex print is 55-90kg (64-105g/m2).

42615101TH Rev.5 66 /

Page 57

4. PARTS REPLACEMENT

This section describes the procedure for replacing the parts, assemblies and units in the field. The replacing procedure is given for detachment. To attach, use the reverse procedure. The Parts No. (1, 2, etc.) appearing in this manual vary from the numbers appearing in the diagram numbering of the Disassembly for Maintenance Configuration (********TL) and RSPL (********TR).

4.1 Precautions in Replacing Parts

(1) Before replacing the parts, be sure to remove the AC cord and the interface cable.

(a) To remove the AC cord, always use the following procedure.

i) Flip the power switch of the printer off (to “O”). ii) Pull the AC inlet plug of the AC cord out of the AC plug. iii) Remove the AC cord and the interface cable from the printer.

(b) To connect the printer again, always use the following procedure.

Oki Data CONFIDENTIAL

Disconnect

(2) Do not disassemble the printer so long as it operates properly.

(3) Minimize the disassembly. Do not detach parts other than those shown in the replacing procedure.

(4) For maintenance, use designated tools.

i) Connect the AC cord and the interface cable to the printer. ii) Insert the AC inlet plug into the AC plug. iii) Flip the power switch of the printer on (to “I”).

Connect

(5) Follow the order instructed to disassemble the printer. Incorrect order may damage the parts.

(6) Small parts such as screws and collars tend to get lost, so temporarily place and fix them in

their original positions.

(7) When handling ICs and circuit boards such as microprocessors, ROMs and RAMs, do not use

gloves that likely to have static.

(8) Do not place the printed circuit boards directly on the printer or the floor.

42615101TH Rev.5 67 /

Page 58

Oki Data CONFIDENTIAL

[Maintenance Tools]

Table 4-1-1 lists tools necessary to replace the printed circuit boards and the units.

Table 4-1-1 Maintenance Tools

No. Q' ty Place of use RemarksService Tools

No. 2-200 Philips screwdriver, Magnetized

No. 3-100 screwdriver

No. 5-200 screwdriver

Digital multimeter

Pliers

Handy cleaner

LED Head cleaner P/N 4PB4083-2248P001

E-ring pliers

3~5 mm screws

Cleans LED head

Required tools for the maintenance utility are shown in Table 4-1-2.

Table 4-1-2 Maintenance Tools

No. Q' ty Place of use RemarksService Tools

1 Laptop computer 1

2 USB cable 1

42615101TH Rev.5 68 /

Page 59

4.2 Part Replacement Procedures

This section describes the procedures for replacing the parts and assemblies shown in the following disassembly chart:

4.2.1 Left Side Cover

(1) Open the top cover 1.

(2) Open the feeder unit 2.

(3) Remove the screw (golden) 3 to detach the left side cover 4.(Tool No.1)

Oki Data CONFIDENTIAL

Figure 4-2-1 Left Side Cover

42615101TH Rev.5 69 /

Page 60

4.2.2 Right Side Cover

(1) Open the top cover 1.

(2) Open the feeder unit 2.

(3) Loosen the screw 3 to detach the right side cover 4.(Tool No.1)

Oki Data CONFIDENTIAL

(loosen)

Figure 4-2-2 Right Side Cover

42615101TH Rev.5 70 /

Page 61

4.2.3 Face-Up Tray

(1) Open the face-up tray 1 in the direction of the arrow, and disengage it at its two places to

detach it with bowing down.

Oki Data CONFIDENTIAL

Figure 4-2-3 Face-Up Tray

42615101TH Rev.5 71 /

Page 62

4.2.4 Rear Cover

(1) Slide out the face-up tray.

(2) Remove the two screws (golden) 1.(Tool No.1)

(3) As shown in Fig.2, insert a flat- blade driver (Tool No.3) into the hole A to disengage the claw A,

at each of the two places.

(4) Disengage the two claws B and pull in an arc the rear cover 2 in the direction of the allow A.

(5) As shown in Fig.3, push the lower part of the rear cover 2 in the direction of the allow B to

disengage the three claws C, then detach the rear-cover.

Oki Data CONFIDENTIAL

Fig.1

Claw B

Claw A

Claws A

Hole A

Fig.2

Claws B

Claws C

Claw A

Hole A

Claws C

42615101TH Rev.5 72 /

Fig.3

Figure 4-2-4 Rear Cover

Page 63

4.2.5 LED Assy / LED Assy-Springs

(1) Open the top cover 1.

(2) As shown in Fig.2, push in the direction of the allow after removing a cable. Then, disengage

the hook A first and the hook B to detach LED Assy 2 (the two springs 3 become detached together with the LED Assy 2).

Oki Data CONFIDENTIAL

Hook A

Fig.1

Hook A

Fig.2

Hook B

Figure 4-2-5 LED Assy / LED Assy-Springs

42615101TH Rev.5 73 /

Page 64

4.2.6 Controller PCB

ES1624n

(1) Remove the Print Engine Controller PCB (see section 4.2.7).

(4) Remove the screw 1 and then the head cable 2.(Tool No.1)

(5) Remove the eight screws (golden) 3, then detach the controller PCB 4(SPA-4 PCB).

(Tool No.1)

Oki Data CONFIDENTIAL

Figure 4-2-6-1 Controller PCB (ES1624n)

42615101TH Rev.5 74 /

Page 65

4.2.7 Print Engine Controller PCB

ES1624n

(1) Open the top cover.

(2) Remove the right side cover (see section 4.2.2).

(3) Remove the connector 1, and disengage the two hooks A of to detach the FAN (CU) 2.

(4) Remove the three screws (golden) 3 disengage the claws B and remove

the plate-shield Assy (PCL) 4.(Tool No.1)

(5) Remove the three screws (golden) 5 and all the connectors to detach

the print engine controller PCB 6.(Tool No.1)

Oki Data CONFIDENTIAL

SSNS

OPE

FSNS

Print engine

controller PCB

2ND

DUP

FAN

HVDLT

Claws

Claws B

Air

HOPKID HCL

COLORID

DRPOW

DRSIG

POWER

Figure 4-2-7-1 Print Engine Controller PCB (ES1624n)

42615101TH Rev.5 76 /

Page 66

Control panel

FSNS cable

PE cable

Option (dup & 2nd)

Paperfeed & K ID monitor

Toner sensor relay

SSNS

OPE

Driver board

FSNS PE

YMC ID moror

2ND DUP

COLORID

HOPKID

HCL

High voltage power unit

FAN

HVOLT

POWER

Oki Data CONFIDENTIAL

DRSIG

ID fan

Figure 4-2-7-3 Print Engine Controller Board Cable Route

PRT PCB SSNS connector

PRP PCB/PRO PCB CN connector

RSF PCB CN connector

Tray-1 paper-end sensor

2nd Tray I/F square connector

Duplex I/F square connector

Solenoid

Low voltage fan

Low voltage power unit

Option (2nd) cable

SSNS

OPE

Print Engine Controller PCB

FSNS

(PRN PCB)

151

SPA-4 PCB PUIF connector/

CUIF

ARC-3 PCB CN3 connector/ ARC-2 PCB CN3 connector

2ND

DUP

HOPKID

COLORID

HCL

DRPOW

HVOLT

FAN

DRSIG

POWER

1 2

19 20

ID cooling fan High-voltage power supply PCB

CN1 connector

Paper feeding motor

K ID motor Y ID motor

M ID motor

C ID motor

Low-voltage power supply PCB CN4 connector Driver relay board PCB PUIF connector Driver relay board PCB POW connector Paper feed solenoid

Figure 4-2-7-4 Print Engine Controller Board Connection Figure

42615101TH Rev.5 78 /

Page 67

4.2.8 Top Cover Assy

(1) Remove the left side cover (see section 4.2.1).

(2) Remove the right side cover (see section 4.2.2).

(3) Remove the rear side cover (see section 4.2.4).

(4) Remove the plate-shield Assy (GDI) [see section 4.2.6, step (2)].

(5) Remove the LED head cable.

(6) Remove the two E-shaped rings 1 and the two Spring-Torsions 2, then detach

the top cover Assy 3.(Tool No.8)

Oki Data CONFIDENTIAL

Figure 4-2-8 Top Cover Assy

42615101TH Rev.5 79 /

Page 68

4.2.9 Top Cover

(1) Open the top cover assy.

(2) Remove the ten screws (black) 1 to remove the guide-paper eject 2.(Tool No.1)

(3) Remove the ten screws (black) 3 to detach the cable cover 4 and the top cover 5.

(Tool No.1)

Oki Data CONFIDENTIAL

Figure 4-2-9 Top Cover

42615101TH Rev.5 80 /

Page 69

4.2.10 Controller Panel Assy

(1) Open the top cover.

(2) Open the feeder unit.

(3) Remove the right side cover (see section 4.2.3).

(4) Remove the plate-shield Assy [see section 4.2.7, step (2)].

(5) Make Control Panel Assy connector removal.

(6) Remove the four screws (golden) 1, then detach the Control Panel Assy 2.(Tool No.1)

Oki Data CONFIDENTIAL

ES1624n

Figure 4-2-10 Control Panel Assy

42615101TH Rev.5 81 /

Page 70

4.2.11 Board-PRP / Top Cover Handle

(1) Remove the Control Panel Assy (see section 4.2.10).

(2) As shown in Fig.2, disengage the two claws A of the lover-lock 2 to remove the Frame-OP 1,

and remove the lever lock 2 and the spring-compression 3.

(3) Disengage the two claws B of the Cover-Assy-OP 4 with inserting a flat- blade driver (Tool

No.3) to remove the Cover-Assy-OP 4 and the sprint-torsions 5.

(4) As shown in Fig.3, inserting a flat- blade driver (Tool No.3) to the two hooks of

the Cover-Assy-OP 4, detach the Board-PRP 6 and the cable 7.

Oki Data CONFIDENTIAL

Claws A

Claw A

Fig.2

Figure 4-2-11-1 Board-PRP (ES1624n) / Top Cover Handle

Fig.1

Claws B

Hook

Fig.3

42615101TH Rev.5 82 /

Page 71

Oki Data CONFIDENTIAL

Air

4.2.12 Low-Voltage Power Unit / ID-FAN / Low-Voltage Power Unit FAN / Hopping Motor / Fuser Motor

(1) Remove the print controller PCB (see section 4.2.7).

(2) Remove the controller PCB (see section 4.2.6).

(3) Boost up the three claws A of the Guide Assy Side R 1 to remove the film 2 and

the Frame-Duct 3. Remove the two claws B of Duct 3 to demount the ID-FAN 4.

(4) Remove the two screws (golden) 5 and the four connectors (CN2, CN3, CN4, CN6) to

demount the Low-voltage Power Unit 6 (Tool No.1).

(5) Demount the Low-voltage Power Unit FAN 7 by releasing the claw C.

(6) Remove the two screws (black) 8 and the connector to detach the hopping motor 9 (Tool No.1).

(7) Remove the two screws (black) 0 and the connector to detach the fuser motor A (Tool No.1).

Note!

• When reassembling the ID FAN 4, Low-voltage Power Unit FAN 7, check the attachment direction.

• When reassembling the Low-voltage Power Unit6, check the setting of AC input voltage.

100V series: Install a short plug to the connector CN5 230V series: Do not install a short plug to the connector CN5

Claw A

Claw C

Claw B

Figure 4-2-12 Low-voltage Power Unit / ID-FAN / Low-Voltage Power Unit FAN / Hopping Motor /

42615101TH Rev.5 83 /

PRN PCB POWER connector

Low-voltage Power Unit FAN7

Note) CN5: Connector to switch over the setting of AC input voltage

100V series: A short plug is installed. / 230V series: A short plug is not installed.

CN4

CN3

Fuser Motor

Short plug for CN5

CN5

I/F connector of the fuser unit

Low-voltage

power supply board

CN2

CN6

AC switch

Page 72

4.2.13 Board-PRT

× 9

(1) Remove the right side cover (see section 4.2.2).

(2) Remove the print engine controller-PCB and the controller-PCB (see sections 4.2.6 and

4.2.7).

(3) Remove the film and the low voltage power unit (see section 4.2.12).

(4) Remove the four screws (golden) 1 and the two E-snaps 2 to remove the plate-outer 3.

(Tool No.1, No.8)

(5) Remove the gear-idle-ID-K 4, Y and C 5, each in one piece, and M 6, and the spring 7

of the solenoid.

(6) Unlatch, and remove by sliding the guide assy-side R 8, the assy and detach

the Board-PRT 9 and the nine springs 0.

Note!

When reassembling the board-PRD, do not forget to attach the spring of the solenoid 7.

Oki Data CONFIDENTIAL

Latch

Figure 4-2-13 Board-PRT

42615101TH Rev.5 84 /

Page 73

4.2.14 Guide-Eject Assy / Color Registration Assy / Board-PRM

(1) Remove the left side cover, the write side cover, the rear cover and the top cover Assy (see

sections 4.2.1, 4.2.2, 4.2.4 and 4.2.8).

(2) Remove the engine controller PCB, the controller PCB and the film [see sections 4.2.6 and

4.2.7, and step (3) of section 4.2.12].

(3) Unscrew the two screws (golden) 1 to remove the Plate-Heat 2.(Tool No.1)

(4) Remove the two Spring-Torsions 3 and disengage the four claws to remove

the cover-driver 4 with a flat-blade driver (Tool No.3).

(5) Make screw (golden) 5 and connector removal to detach the board-PRM 6.(Tool No.1)

(6) Make two-screw (golden) 7 removal to detach the color registration assy 8.(Tool No.1)

Oki Data CONFIDENTIAL

(7) Make three-screw (golden) 9

Claws

, the connector 0 and the guide cable A to detach the

Claw

POW

HEAT

DENS

RCR

Board-PRM

PUIF

BELT

FUSER

EXIT

LCR

guide eject assy

42615101TH Rev.5 85 /

B.(Tool No.1)

Page 74

Oki Data CONFIDENTIAL

EXIT sensor

Color registration sensor

Flame-thermistor

Belt-thermistor

Belt-motor

Heater-thermistor & Fuse cut-out

LCR RCR

EXIT

PUIF

Density sensor

FUSER

BELT

DENS

POW

HEAT

Heater-AC

Belt thermistor

Color registration sensor

Heater-moter

PRN PCB DRPOW connector

Fuser motor

Density sensor

Right color adjustment sensor PCB

Board-PRM

Figure 4-2-14-2 Board-PRM Cable Route

POW

HEAT

RCR

SNS

(PRC PCB)

Driver Relay PCB

DENS

(PRM PCB)

BELT

FUSER

Left color adjustment sensor PCB

PUIF

EXIT

LCR

SNS

(PRC PCB)

PRN PCB DRSIG connector

Exit sensor

Belt motor

Fuser unit I/F connector

Figure 4-2-14-3 Board-PRM Connection Figure

42615101TH Rev.5 86 /

Page 75

Oki Data CONFIDENTIAL

Figure 4-2-14-1 Guide-Eject Assy / Color Registration Assy / Board-PRM

4.2.15 FAN (Fuser) / Belt Motor / High Voltage Power Supply Board / Cover Open Switch

(1) Remove the left side cover (see section 4.2.1).

(2) Make screw (golden) 1 and connector removal to detach the belt motor 2.(Tool No.1)

(3) Remove the Rear-Cover 3 (see section 4.2.4).

(4) Remove the connector and detach the FAN (Fuser) 4 , turning it clockwise.

(5) Remove the connector and claws to detach the cover open switch 5.

(6) Remove the screws (golden 6 and black 7), seven claws and connector to remove the high

FAN(Fuser)

Belt thermistor

Heater flame thermistor

Air

Claws

CN3

Claws

High-voltage power supply board

CN2

TR-YTR-C

CN1

Cover open switch

CN4

TR-KTR-M

CN5

voltage power supply board 8.

42615101TH Rev.5 87 /

Page 76

Oki Data CONFIDENTIAL

Figure 4-2-15 FAN (Fuser) / Belt Motor / High Voltage Power Supply Board / Cover Open Switch

4.2.16 MPT-Assy

(1) Open the MPT-Assy 1.

(2) Remove the two stoppers with opening the two arms of MPT-Assy 1 out and remove the two

supports to detach MPT Assy 1, pulling the two supports in the direction of the allow.

Stopper (each side)

Support (each side)

Figure 4-2-16 MPT-Assy

Arms

42615101TH Rev.5 88 /

Page 77

Oki Data CONFIDENTIAL

4.2.17 Feeder Unit / Board-RSF / MPT Hopping Roller / Frame Assy Separator / Cover-Front

(1) Open the top cover.

(2) Remove the left side cover (see section 2.2.2).

(3) Make plate-shield and connector removal (see section 2.2.6).

(4) Disengage the claws of the stay L 1 and the stay R 2, sliding the feeder unit 3 to the right,

detach the feeder unit.

(5) Remove the cover sensor 4 by releasing claw engagement.

(6) Make connector removal to detach the Board-RSF 5.

(7) Remove the lever 6 by turning it until it is unlocked.(Tool No.1)

(8) Remove the two screws (black) 7 to remove the stay L 1.(Tool No.1)

(9) Remove the four screws (black) 8, disengage the front two claws A and remove

the feed Assy 9.(Tool No.1)

(10) Remove the two lock-shafts 0 and the two springs A and disengage the four claws to detach

the Hopping Roller Assy B.

(11) Remove the hopping roller shaft C.

(12) Remove the two supports to detach the frame Assy separator D, and remove the spring E.

Claws A

Figure 4-2-17 Feeder Unit / Board-RSF / MPT Hopping Roller / Frame Assy Separator / Cover-Front

42615101TH Rev.5 89 /

Page 78

Oki Data CONFIDENTIAL

4.2.18 Main Motors / Solenoid / Paper-End Sensor

(1) Remove the left side cover, the right side cover, the rear side cover, the top cover unit and the

feeder unit (see sections 4.2.1, 4.2.2, 4.2.4, 4.2.8 and 4.2.17).

(2) Remove the print engine controller PCB, the controller PCB and the film [see sections 4.2.6,

4.2.7 and 4.2.12 (3)].

(3) Remove the Fan(ID), the frame duct, the Fan(Pow L) and the low voltage power unit (see

section 4.2.12).

(4) Remove the Plate-Heat, the Eject Assy, the Cover-Driver, the Color-Registration Assy and the

Board-PRM (see section 4.2.14).

(5) Unscrew the two screws (golden) 1 to remove the plate-driver 2.(Tool No.1)

(6) Disengage the latch to remove the cover-hopping 3.

(7) Remove the Fan(fuser) (see section 4.2.15).

(8) Remove the E-snap 4, Disengage the latch to remove the gear assy-planet 5, the shaft 6

and the three rollers 7.

(9) Unscrew the two screws (golden) 8 to remove the side plate R assy 9.(Tool No.1)

(10) Remove the four screws (golden) 0 and the two E-snaps A, then remove the Plate-Outer B,

the Gear-Idle-K C, and Y and C D, and M E.(Tool No.1)

(11) Remove the three screws (golden) F to remove the plate-lock-out-ID T and the Plate-Inner G.

(Tool No.1)

(12) Remove the screws (golden) H (one screws each Motor-ID I) and the connectors, then uninstall

the Motor-IDs I.(Tool No.1)

(13) Remove the screw (golden) J and the two screws (black) U to remove the Gear Assy-HP K.

(Tool No.1)

(14) Remove the screw (golden) L to uninstall the solenoid M.(Tool No.1)

(15) Remove the spring N, disengage the claw and remove the bush O, the hopping roller shaft P

and the Frame-Hopping Q.

(16) Detach the paper-end sensor R and the paper-end lever S.

42615101TH Rev.5 90 /

Page 79

C ID motor

Position the motor and the connector to the arrows.

M ID motor

Y ID motor

K ID motor

Oki Data CONFIDENTIAL

Figure 4-2-18 Main Motors / Solenoid / Paper-End Sensor

42615101TH Rev.5 91 /

Page 80

4.2.19 Feed Roller

(1) Remove the cassette.

(2) Unlatch and detach the feed roller 1.

Oki Data CONFIDENTIAL

Latch

Figure 4-2-19 Feed Roller

42615101TH Rev.5 92 /

Page 81

4.2.20 Shaft Assy-Eject (FU) / Shaft Assy-Eject (FD) / Eject Sensor

(1) Detach the Eject Assy 1 (see section 4.2.14).

(2) Remove the two claws to separate the Guide-Eject-Lower 2 and the Guide-Eject-Upper 3.

(3) Remove the Gear-Idle-Eject 4 and Stopper-Shaft 5, then detach the Shaft Assy-Eject (FU) 6

and the Shaft Assy-Eject (FD) 7.

(4) Detach the Lever-Eject Sensor 8 and then the eject sensor 9.

(5) Remove cables 0, A and B and the guide cable C.

Oki Data CONFIDENTIAL

Claws

Figure 4-2-20 Shaft Assy-Eject (FU) / Shaft Assy-Eject (FD) / Eject Sensor

42615101TH Rev.5 93 /

Page 82

Oki Data CONFIDENTIAL

4.2.21 Fuser Unit

(1) Open the top cover 1.

(2) Rise the Fuser-Unit-Lock-Levers (two blue portions) 2 in the directions of the arrows to detach

the fuser unit 3.

(Blue)

Figure 4-2-21 Fuser Unit

42615101TH Rev.5 94 /

Page 83

Oki Data CONFIDENTIAL

4.2.22 Belt Unit

(1) Open the top cover 1.

(2) Remove the image drum unit.

(3) Turn the lock levers (two blue portions) 2 in the direction of the arrow ( ) and, grasping the

lever (blue) 3, detach the belt unit 4.

(Blue)

Figure 4-2-22 Belt unit

42615101TH Rev.5 95 /

Page 84

4.3 Parts to lubricate

This section shows parts to lubricate. It means that lubricating to parts other than mentioned is prohibited. It is not necessary to lubricate in removing or installing. However, specified lubrication oil has to be used to lubricate if oil is wiped off.

Inbrication work

(1) Mark and name of the Iubrication oil

EM-30L : Molycoat EM-30L HP-300 : Molycoat HP-300 PM : Panmotoroil 10W-40 or ZOA 10W-30

(2) Standard of amount of grease

Oki Data CONFIDENTIAL

Class

Amount of grease(cc)

W(mm)

Sample

SABCDEF

0.0005 0.003 0.005 0.01 0.03 0.05 0.1

1.24 2.25 2.67 3.37 4.86 5.76W7.26

42615101TH Rev.5 96 /

Page 85

1 42049501 Plate-Assy.-Base

Post EM-30L Class A

Both side EM-30L Class A

Oki Data CONFIDENTIAL

Gear-Z24-50-HP

Gear-Planet-HP

Bearring portion

EM-30L Class A

Stopper-Z45-48-HP

Bearring portion

EM-30L Class A

Holder-Planet

Gear bottom surface EM-30L Class C

Stopper-HP

Post EM-30L Class A

Both side EM-30L Class A

End surface EM-30L Class C

Shaft-Hopping

The side of groove EM-30L Class C

Cog surface abnd end surface EM-30L Class C

Ratch portion(Hatching portion) EM-30L Class C

42615101TH Rev.5 97 /

Page 86

2 42049701 Guide-Assy.-Cassette-L

Guide-Casette-L

Oki Data CONFIDENTIAL

Apply a normal amount of Molycoat(EM-30L) to the hatched portions

EM-30L Class C

3 42050101 Guide-Assy.-Cassette-R

Apply a normal amount of Molycoat(EM-30L)

Guide-Casette-R

to the hatched portions

EM-30L Class C

42615101TH Rev.5 98 /

Page 87

4 42057301 Gear-Assy.-HP

Holder-Gear-A

Oki Data CONFIDENTIAL

Apply a normal amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class C

5-1 42053501 Plate-Ass.-Side-R

Apply a normal amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class C

Bracket-Inner(Caulking)

42615101TH Rev.5 99 /

Page 88

5-2 42053501 Plate-Ass.-Side-R

Oki Data CONFIDENTIAL

Gear-Idle-Drum-M

Gear-Idle-Drum-K

Gear-Idle-Drum-YC

Gear-Idle-Drum-Liftup

Apply a normal amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class C

Apply a normal amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class C

Enlarged figure

Link-Liftup-R

Apply a small amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class A

Apply a small amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class A

(5) (15)

Apply a small amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class A

42615101TH Rev.5 100 /

Page 89

6 42060001 Plate-Ass.-Side-L

Apply a small amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class A

Link-Liftup-L

(15) (5)

Oki Data CONFIDENTIAL

Apply a small amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class A

Gear-Planet

7 42071401 Holder Assy.-Regist-L

Apply a small amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class A

Apply a normal amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class C

Holder-Regist-L

Apply a normal amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class C

42615101TH Rev.5 101 /

Page 90

8 42071901 Holder Assy.-Regist-R

Oki Data CONFIDENTIAL

Holder-Regist-R

Apply a normal amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class C

9 42087001 Cassette-Assy

The standard amount of Molycoat(EM-30L) should be applied to the shaded portions shown in the figure below before assembly.

Frame-Separation-Assy

Fulcrum of rotation and side Class C

The application of grease protruding over on the paper carriage surface is not permitted

42615101TH Rev.5 102 /

Page 91

0 42064301 Guide-Assy.-Eject-U

Apply a normal amount of Molycoat(EM-30L) to the surface of gear teeth, shaft, and the flange portions.(8 places) No Molycoat at the paper running face.

Shaft-Assy.-Eject(FD)

Oki Data CONFIDENTIAL

EM-30L Class C

Guide-Eject-Upper

Shaft-Assy.-Eject(FU)

Apply a normal amount of Molycoat(EM-30L) to the surface of post.

EM-30L Class C

Grease is not applied to this hatching portion.

Detail X Detail Y

Apply a small amount of Molycoat(EM-30L) to the surface of shaft.(6 places) No Molycoat at the paper running face.

Portion Y Portion X

EM-30L Class A

42615101TH Rev.5 103 /

Page 92

A 42621601 Guide-Assy.-Eject-L

Post-G.B.L.-Z33

Apply a normal amount of Molycoat(EM-30L) to the hatched areas

EM-30L Class C

Oki Data CONFIDENTIAL

B 42464901 Frame-Assy.-Base

Apply PM to the hatched portion in a small quantity. (1) The application mathod : wipe with the cloth with which PM sank in a small quantity. (2) After applying PM, check that there is no creaking noise when taking out and inserting a cassette several times.

PM Class C

Cassette-Assy.

42615101TH Rev.5 104 /

Page 93

C-1 42621701 Printer-Unit-ES1624n

Apply a normal amount of Molycoat(EM-30L)(4 portions)

EM-30L Class C

Oki Data CONFIDENTIAL

Plate-Ass.-Side-L

Apply areas to grease(4 points)

Gear-Idle-Belt

Apply a normal amount of Molycoat(EM-30L)

EM-30L Class C

Plate-Driver-PU(Caulking)

Apply a normal amount of Molycoat(EM-30L)

EM-30L Class C

Apply a normal amount of Molycoat(EM-30L)

EM-30L Class C

42615101TH Rev.5 105 /

Page 94

C-2 42621701 Printer-Unit-ES1624n

Apply a normal amount of Molycoat(EM-30L) to the hatched areas

Oki Data CONFIDENTIAL

EM-30L Class C

Plate-Ass.-Side-R

PM is applied to the portion of the slot of solid coiling of this torsion-spring using a bros

(2 places)(At both Sides)

Spring-Torsion-L

Spring-Torsion-R

42615101TH Rev.5 106 /

Page 95

C-3 42621701 Printer-Unit-ES1624n

Oki Data CONFIDENTIAL

Grease is not applied to a metal shaft.

Apply a normal amount of Molycoat(EM-30L)

EM-30L Class C

Gear-Idle-Heat

42615101TH Rev.5 107 /

Page 96

D 42626501 Sensor-Assy-Color-Regist

Oki Data CONFIDENTIAL

Plate-Sensor-C.Regist

Shaft-Cover-Sensor

Apply a small amount of Molycoat(ME-30L) to the hatching areas(4 places)

EM-30L Class A

Molycoat shall not adhere to the surface of Cover-Sensor-C.Regist

Cover-Sensor-C.Regist

42615101TH Rev.5 108 /

Page 97

E 42076601 Roller-Assy.-Idle(FD)

Oki Data CONFIDENTIAL

Exploded View

Method of amount of grease

Before 1 assemble at 2, apply small amount of Molycoat(EM-30L) to the sliding portions(hatching portion) of 1 and 2.(Class S)

Not allowed to stain the area with grease.

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F 42077801 Roller-Assy.-BIAS(FU)L

Oki Data CONFIDENTIAL

No.01

Left-Side

Method of amount of grease

No.02

Reft-Side

No.01 No.02 No.03

No.03

Center-Side

Not allowed to stain the area with grease. Not allowed to stain the area with grease.

After 2 or 4 assemble at 3 or 5, apply small amount of Molycoat(EM-30L) to the sliding portions(hatching portion) of 2 and 4.(Class S)

42615101TH Rev.5 110 /

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5. MAINTENANCE MENU

Adjustments of ES1624n printers can be made using maintenance utility software and key input from their operator panels. In addition to a standard menu, there is a maintenance menu in the display of their operator panels. The menu that serves the purpose of intended adjustment is to be selected.

5.1 System Maintenance Menu(For Maintenance Staff)

Turning on printer power while holding the MENU+ and MENU- keys down activates System Maintenance menu. The menu is only displayed in English on a printer to any destination.

Oki Data CONFIDENTIAL

Note!