Olivetti PG L22 Special Service Manual

PG L22 Special

Printer

SERVICE MANUAL

Code Y103920-3

PUBLICATION ISSUED BY:

Olivetti Tecnost S.p.A.

77, Via Jervis - 10015 Ivrea (TO)
Italy

Copyright © 2004, Olivetti
All rights reserved

Y103920-3 Service Manual 3

PREFACE

This Maintenance Manual describes the field maintenance methods for this Monochrome LED Page Printer
model.

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.

Y103920-3 Service Manual 4

CONTENTS

1. CONFIGURATION ....................................................................................................7

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

1.2 Printer Configuration ......................................................................................... 8

1.3 Optional Configuration ...................................................................................... 9

1.4 Specification ................................................................................................... 11

1.5 Safety Standards ............................................................................................ 13

1.5.1 Certification Label ..................................................................................................... 13

1.5.2 Warning Label ........................................................................................................... 13

1.5.3 Warning/Caution Marking ......................................................................................... 14

2. PARTS REPLACEMENT ........................................................................................ 15

2.1 Precautions for Parts Replacement ................................................................ 15

2.2 Parts Layout .................................................................................................... 17

2.3 How to Change Parts ...................................................................................... 20

2.3.1 Upper Cover Assy ..................................................................................................... 21

2.3.2 LED Head ................................................................................................................. 22

2.3.3 Operator Panel Assy ................................................................................................. 23

2.3.4 Lower Base Unit........................................................................................................ 24

2.3.5 Pulse Motor (Main/Drum) .......................................................................................... 25

2.3.6 Pulse Motor (Registration) ........................................................................................ 26

2.3.7 Pulse Motor (Hopping) .............................................................................................. 27

2.3.8 Face Up Stacker Assy .............................................................................................. 28

2.3.9 Eject Roller Assy ....................................................................................................... 29

2.3.10 Motor Assy ................................................................................................................30

2.3.11 Hopping Roller Shaft Assy ........................................................................................ 31

2.3.12 Stacker Cover Assy .................................................................................................. 32

2.3.13 Registration Roller .................................................................................................... 33

2.3.14 Roller Transfer Assy ................................................................................................. 34

2.3.15 Fusing Unit ................................................................................................................ 35

2.3.16 Back-up Roller .......................................................................................................... 36

2.3.17 Sensor Plate (Inlet) ................................................................................................... 37

2.3.18 Sensor Plate (Outlet), Sensor Wire Assy .................................................................. 38

2.3.19 Manual Feed Guide Assy .......................................................................................... 39

2.3.20 Sensor Plate (Paper Supply) .................................................................................... 40

2.3.21 GRV-2 PCB ............................................................................................................... 41

2.3.22 Power Supply Board and High Voltage/Sensor Board .............................................. 42

2.3.23 Cassette Guide L Assy ............................................................................................. 43

2.3.24 Cassette Guide R Assy ............................................................................................. 44

3. ADJUSTMENT ........................................................................................................ 45

3.1 Maintenance Modes and Functions ................................................................ 45

3.1.1 User Maintenance Mode (Administrator Menu)......................................................... 45

3.1.2 System Maintenance Mode (System Maintenance Menu) ........................................ 46

3.1.3 EEPROM Initial Setting Range for Events ................................................................ 48

3.2 Adjustment When Replacing a Part ................................................................ 49

3.2.1 Uploading/Downloading EEPROM data .................................................................... 49

4. PERIODICAL MAINTENANCE ............................................................................... 50

4.1 Periodical Replacement Parts......................................................................... 50

Y103920-3 Service Manual 5

4.2 Cleaning .......................................................................................................... 50

4.2.1 Cleaning of LED Lens Array ..................................................................................... 50

4.2.2 Cleaning Page Function ............................................................................................ 51

5. TROUBLESHOOTING PROCEDURES.................................................................. 52

5.1 Troubleshooting Tips ...................................................................................... 52

5.2 Points to Check before Correcting Image Problems ....................................... 52

5.3 Tips for Correcting Image Problems ............................................................... 52

5.4 Preparation for Troubleshooting ..................................................................... 53

5.5 Troubleshooting Flow...................................................................................... 53

5.5.1 LCD Status Message/Problem List ........................................................................... 53

5.5.2 LCD Message Troubleshooting ................................................................................. 59

5.5.3 Image Troubleshooting ............................................................................................. 67

6. WIRING DIAGRAM ................................................................................................ 76

6.1 Interconnect Signal Diagram........................................................................... 76

6.2 PCB Layout and Connector Signal List ........................................................... 77

6.3 Resistance Check ........................................................................................... 89

APPENDIX A RS-232C SERIAL INTERFACE (OPTION) .......................................... 91

APPENDIX B CENTRONICS PARALLEL INTERFACE ............................................ 96

APPENDIX C UNIVERSAL SERIAL BUS (USB) .....................................................105

APPENDIX D LOOP TEST (RS-232C INTERFACE) ............................................... 111

APPENDIX E DIAGNOSTICS TEST ........................................................................ 112

APPENDIX F MULTI PURPOSE FEEDER MAINTENANCE ................................... 122

1. OUTLINE ...................................................................................................... 122

1.1 Functions ................................................................................................................ 122

1.2 External View and Component Names ................................................................... 122

2. MECHANISM DESCRIPTION ...................................................................... 123

2.1 General Mechanism ................................................................................................ 123

2.2 Hopper Mechanism ................................................................................................. 123

3. PARTS REPLACEMENT ..............................................................................124

3.1 Precautions Concerning Parts Replacement .......................................................... 124

3.2 Parts Layout ............................................................................................................ 125

3.3 Parts Replacement Methods ................................................................................... 126

3.3.1 Link ........................................................................................................... 126

3.3.2 Separator .................................................................................................. 127

3.3.3 OLEV-11-PCB .......................................................................................... 128

3.3.4 Pulse Motor ............................................................................................... 129

3.3.5 Planet Gear ............................................................................................... 130

3.3.6 Roller-A and B .......................................................................................... 131

4. TROUBLESHOOTING .................................................................................. 132

4.1 Precautions Prior to the Troubleshooting ................................................................ 132

4.2 Preparations for the Troubleshooting ...................................................................... 132

4.3 Troubleshooting Method ......................................................................................... 133

4.3.1 LCD Status Message List ......................................................................... 133

Y103920-3 Service Manual 6

5. CONNECTION DIAGRAM ............................................................................ 135

5.1 Interconnection Diagram ......................................................................................... 135

5.2 PCB Layout ............................................................................................................. 135

6. PARTS LIST ................................................................................................. 136

APPENDIX G HIGH CAPACITY SECOND PAPER FEEDER .................................. 138

1. OUTLINE ...................................................................................................... 138

1.1 Functions ................................................................................................................ 138

1.2 External View and Component Names ................................................................... 138

2. MECHANISM DESCRIPTION ...................................................................... 139

2.1 General Mechanism ................................................................................................ 139

2.2 Hopper Mechanism ................................................................................................. 139

3. PARTS REPLACEMENT ..............................................................................140

3.1 Precautions Concerning Parts Replacement .......................................................... 140

3.2 Parts Layout ............................................................................................................ 141

3.3 Parts Replacement Methods ................................................................................... 142

3.3.1 Stepping Motor (Hopping) ......................................................................... 143

3.3.2 TQSB-2 PCB ............................................................................................ 145

3.3.3 Hopping Roller Shaft Assy and One-way Clutch Gear .............................. 145

4. TROUBLESHOOTING .................................................................................. 146

4.1 Precautions Prior to the Troubleshooting ................................................................ 146

4.2 Preparations for the Troubleshooting ...................................................................... 146

4.3 Troubleshooting Method ......................................................................................... 147

4.3.1 LCD Status Message List ......................................................................... 147

5. CONNECTION DIAGRAM ............................................................................ 149

5.1 Interconnection Diagram ......................................................................................... 149

5.2 PCB Layout ............................................................................................................. 149

6. PARTS LIST ................................................................................................. 150

APPENDIX H NETWORK INTERFACE (OPTION) .................................................. 156

Y103920-3 Service Manual 7

1. CONFIGURATION

1.1 System Configuration

This printer model consists of control and engine blocks in the standard configuration, as shown
in Figure 1-1.

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

Figure 1-1

Operator Panel

LCD : 1
LED : 1
SW : 8

Drum Motor

Paper

Cassette

ID

Unit

Paper Feeding

Mechanism

(First Tray Unit)

Registration

Motor

Hopping Motor

LED Head

Electrophotogarphic

Processing Unit

Fuser Unit

Halogen-Lamp

High Voltage /

Sensor Board

ROM DIMM

*

High Capacity
Second Paper

Feeder

*

Multi Purpose

Feeder

IEEE1284

USB

Network

RS232C

*

Network

Board

OR

*

RS232C

Board

*

* : Optional

AC

INPUT

Power Supply

Board

Face Down

Stacker

FAN

RAM

DIMM

*

Main Control Board

Y103920-3 Service Manual 8

1.2 Printer Configuration

The printer unit consists of the following hardware components:

• Electrophotographic Processor

• Paper Feeder

• Controller

• Operator Panel

• Power Supply Unit

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

Figure 1-2

Upper cover

Operator panel assy

Stacker assy

Optional board

Legal/universal paper cassette

Image drum unit(Type 9)

(consumable)

Toner-cartridge(Type 9)

(consumable)

Power supply

High Voltage / Sensor board

Main control board

Y103920-3 Service Manual 9

1.3 Optional Configuration

The options shown below are available for this printer model. These are available separately from the
printer unit.

(1) High Capacity Second Paper Feeder

(2) Multi Purpose Feeder

(3) RS-232C Serial Interface Board

Y103920-3 Service Manual 10

(5) SDRAM DIMM

(6) Flash DIMM

(4) Network Interface Board(Soft NIC CARD)

(7) Postscript 3 Emulation DIMM

(i) 16MB (ii) 32MB (iii) 64MB

(iv) 128MB (v) 256MB

(i) 8MB (ii) 16MB

Y103920-3 Service Manual 11

1.4 Specification

(1) Type Desktop

(2) External dimensions Height 8.5” (215 mm)

Width 14.0” (355 mm)
Depth 15.7” (400 mm)

(3) Weight Approx. 9 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
– Legal* [* Without Multi Purpose Feeder (Option)]
– Legal-13*
– Executive
– COM-9 **
– COM-10** [** manual feed and Multi Purpose Feeder
– Monarch** (option) only]
– DL**
– C5**
– A4
– A5
– B5 (JIS)
– A6

• Applicable sizes
– Width : 3.5” to 8.5” (90 to 216 mm)
– Length : 5.8” to 14” (148 to 355.6 mm)

<Thickness>

– Automatic feed : 16 to 28 lbs (60 to 105 g/m2)
– Manual feed : Label, OHP paper (transparency)

Envelope (24 to 28 lbs)

(6) Printing speed Continuous printing : 23 pages per minute with Letter size paper.

22 pages per minute with A4 size paper.
[Except, Multi purpose Feeder (14ppm) with
Letter size paper]

Warm-up time : 35 seconds typical at room temperature

[68½F (20½C), AC 120/230 V].

First page print time : 6.0 seconds typical for the Letter size paper

(6.2 seconds for the A4 size) after warm-up.

(7) Paper feeding method Automatic feed or manual feed

(8) Paper delivery method Face down/face up

(9) Resolution 600 ∞ 600 dots/inch

600 ∞ 1200 dots/inch

Y103920-3 Service Manual 12

(10) Power input 110~127 VAC ± 10%

220~240 VAC ± 10%

(11) Power consumption 120VAC 230VAC

Peak : Approx. 700W Approx. 700W
Typical operation : Approx. 360W Approx. 360W
Idle : Approx. 68W Approx. 66W
Power save mode : Approx. 9W Approx. 10W
(Without option)
Power save mode : Approx. 13W Approx. 14W
(With full option)

(12) Temperature and humidity

1. Storage conditions specified above apply to printers in packed condition.

2. Temperature and humidity must be in the range where no condensation occurs.

In operation Power off mode During Storage Unit

Temperature

Humidity

Maximum wet bulb
temperature

Minimum diference
between wet and dry
bulb temperatures

50-90

(10-32)

20-80

77

(25)

35.6
(2)

°F

(°C)

%RH

°F

(°C)

°F

(°C)

32-110

(0-43)

10-90

80.4

(26.8)

35.6
(2)

14-110

(–10-43)

10-90

(13) Noise During operation : 53 dB (A) or less

Standby : 38 dB (A) or less
Quiet mode : Back ground level

(14) Consumables Toner cartridge kit 2,500 (5% duty) 6,000 (Optional 6K Toner 5%

duty)

Image drum cartridge 25,000 (at continuouts printing)

17,000 (3 page/job) without Power Save
11,000 (1 page/job) without Power Save
7,000 (1 page/job) with Power Save

(Minimum)

10

28

32

Temperature

(

°

C)

20 80

Humidity (%)

Operation range

Y103920-3 Service Manual 13

1.5 Safety Standards

1.5.1 Certification Label

The safety certification label is affixed to the printer in the position described below.

1.5.2 Warning Label

The warning labels are affixed to the sections which may cause bodily injury.

Follow the instructions on warning labels during maintenance.

Serial No.

Made In China

Y103920-3 Service Manual 14

1.5.3 Warning/Caution Marking

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

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.

CAUTION

Y103920-3 Service Manual 15

2. PARTS REPLACEMENT

The section explains the procedures for replacement of parts, assemblies, and units in the field. Only
the disassembly procedures are explained here. For reassembly, reverse the disassembly procedure.

2.1 Precautions for Parts Replacement

(1) Before starting to replace parts, remove the AC cord and interface cable.

(a) Remove the AC cord in the following sequence:

i) Turn off (“o”) the power switch of the printer
ii) Disconnect the AC inlet plug of the AC cord from the AC receptacle.
iii) Disconnect the AC cord and interface cable from the printer.

(b) Reconnect the printer in the following procedure.

i) Connect the AC cord and interface cable to the printer.
ii) Connect the AC inlet plug to the AC receptacle.
iii) Turn on (“l”) the power switch of the printer.

(2) Do not disassemble the printer as long as it is operating normally.

(3) Do not remove parts which do not have to be touched; try to keep the disassembly to a minimum.

(4) Use specified service tools.

(5) When disassembling, follow the laid out sequences. Parts may be damaged if these sequences are

not followed.

(6) Since screws, collars and other small parts are likely to be lost, they should temporarily be attached

to the original positions during disassembly.

(7) When handling IC’s such as microprocessors, ROMs and RAMs, or circuit boards, do not wear

gloves that are likely to generate static electricity.

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

Disconnect

Reconnect

OFF

ON

Y103920-3 Service Manual 16

[Service Tools]

The tools required for field replacement of printed circuit boards, assemblies and units are listed in Table
2-1.

Table 2-1 Service Tools

No. Q’ ty Application RemarksService Tools

1

2

3

4

5

6

7

8

1

1

1

1

1

1

1

1

2~2.5 mm screws

3~5 mm screws

Cleans LED head

No. 1-100 Philips screwdriver

No. 2-100 Philips screwdriver

No. 3-100 screwdriver

No. 5-200 screwdriver

Digital multimeter

Pliers

Handy cleaner

LED Head cleaner

Y103920-3 Service Manual 17

2.2 Parts Layout

This section explains the layout of main components of the equipment.

[Lower base unit]

Figure 2-1

Image drum unit (Type 9)

(consumable)

Toner cartridge (Type 9)

(consumable)

LED head

Stacker cover assy

View A

Pulse motor
(main/drum)

Pulse motor
(registration)

Pulse motor
(hopping)

Stacker cover assy

Eject roller assy

Registration

roller Assy

Back-up roller

Diselectrification bar

Transfer roller

Lower base unit

Hopping roller rubber

Hopping roller shaft

Manual feed guide assy

View A

Y103920-3 Service Manual 18

[Upper cover unit]

Figure 2-2

Upper cover

Y103920-3 Service Manual 19

[Base unit]

Figure 2-3

Paper cassette

Cassette guide (L) Assy

Cassette guide (R) Assy

DC fan assy

Face up stacker assy

Operator panel assy

Power supply/sensor board

(Low voltage)

High voltage /

sensor board

Main control board

Network Interface board

Y103920-3 Service Manual 20

2.3 How to Change Parts

This section explains how to change parts and assemblies listed in the disassembly diagram below.

In the parts replacement procedure, those parts marked with the part number inside ● with white letters
are RSPL parts.

Printer unit Upper cover assy

(2.3.1)

LED head
(2.3.2)

Transfer roller
(2.3.14)

Face up stacker assy
(2.3.8)

Lower base unit
(2.3.4)

Operator panel assy
(2.3.3)

Manual feed guide assy
(2.3.19)

Pulse motor (main/drum)
(2.3.5)

Pulse motor (registration)
(2.3.6)

Pulse motor (hopping)
(2.3.7)

Eject roller assy
(2.3.9)

Motor assy
(2.3.10)

Sensor plate (inlet)
(2.3.17)

Sensor plate (outlet),
sensor wire assy
(2.3.18)

Sensor plate (paper supply)
(2.3.20)

GRV-2 PCB
(2.3.21)

1

Hopping roller shaft assy
(2.3.11)

Stacker cover assy
(2.3.12)

Registration roller
(2.3.13)

Fusing unit
(2.3.15)

Back up roller
(2.3.16)

2

Power supply board, high voltage / sensor board
(2.3.22)

Cassette guide (L)
(2.3.23)

Cassette guide (R)
(2.3.24)

To

1

To

2

Y103920-3 Service Manual 21

2.3.1 Upper Cover Assy

(1) With the power switch turned off, unplug the AC power cord from the outlet.

(2) Disconnect the interface cable 1.

(3) Press the button 2 on right side of the Upper cover and open the stacker cover assy 3.

(4) Take out the image drum unit 4.

(5) Remove one screw 5, and remove the I/F cover 6 from the back side of the printer.

(6) Open the manual feed guide assy 7. Unlock the latches at two locations on the front side. Lift the

front side of the upper cover 8 up and unlock the latches at two locations on the back side. Lift and
remove the upper cover assy 8.

Note :

When removing or reinstalling the upper cover, be careful not to get the motor cables tangled
or caught.

7

8

6

3

4

1

2

5

LATCH

LATCH

Y103920-3 Service Manual 22

2.3.2 LED Head

(1) Press the button on right side of the upper cover and open the stacker cover assy 1.

(2) Open the hook section on the left side of the head holder and remove the LED head 2.

(3) Remove the head cable 3 from the head connector.

Note:

Be sure not to touch directly or push on the SLA part of the LED head.

SLA

(Seltoc Lens Array)

1

2

3

Y103920-3 Service Manual 23

2.3.3 Operator Panel Assy

(1) Unlock two latches on the upper cover from the rear side, lift the operator panel assy 1 from the

back and remove it.

(2) Remove the Sumi card (operator panel) 2 from the connector (CN1) 3.

Note :

You can remove the operator panel assy while the upper cover installed on the unit. However,
it is much easier to remove the panel assy after removal of upper cover.

Unlock two latches with a tip of
screw driver. For the purpose,
insert a driver through faceup
paper outlet as shown.

2

1

3

Rear view

Y103920-3 Service Manual 24

2.3.4 Lower Base Unit

(1) Remove the upper cover assy (see 2.3.1).

(2) Remove the operator panel assy (see 2.3.3).

(3) Remove the face up stacker assy (see 2.3.7).

(4) Remove the transfer roller assy (see 2.3.14).

(5) Remove the connecting cables 1, 2 and 3 of the pulse motors from the connectors (DM, RM, HM)

of the GRV-2 PCB 1.

(6) Remove the LED head cables 4 from the connector (HEAD).

(7) Remove the Thermistor cable 5 from the connector (THERM).

(8) Remove the connecting cable 8 of the heater from the connector (CN2).

(9) Open the manual feed guide assy, remove seven screws 7, then remove the lower base unit 6.

6

3

1

7

7

2

4

5

8

7

7

1

Y103920-3 Service Manual 25

2.3.5 Pulse Motor (Main/Drum)

(1) Remove the upper cover assy (see 2.3.1).

(2) Remove the lower base unit (see 2.3.4).

(3) Remove two screws 1 and remove the pulse motor (main/drum) 2 from the motor bracket 3.

3

1

2

1

View A

View A

Y103920-3 Service Manual 26

2.3.6 Pulse Motor (Registration)

(1) Remove the upper cover assy (see 2.3.1).

(2) Remove the lower base unit (see 2.3.4).

(3) Remove two screws 1 and remove the pulse motor (registration) 2 from the motor bracket 3.

2

3

1

View A

View A

Y103920-3 Service Manual 27

2.3.7 Pulse Motor (Hopping)

(1) Remove the upper cover assy (see 2.3.1).

(2) Remove the lower base unit (see 2.3.4).

(3) Remove two screws 1 and remove the pulse motor (hopping) 2 from the motor bracket 3.

2

3

1

1

View A

View A

Y103920-3 Service Manual 28

2.3.8 Face Up Stacker Assy

(1) Remove the upper cover assy (see 2.3.1).

(2) Remove the operator panel assy (see 2.3.3).

(3) Remove three screws 1 and remove both the shield plate 2 and face up stacker 3 together.

(4) Unlock the latches at two locations, and remove the face up stacker 3.

1

2

3

1

Y103920-3 Service Manual 29

2.3.9 Eject Roller Assy

(1) Remove the upper cover assy (see 2.3.1).

(2) Remove the operator panel assy (see 2.3.3).

(3) Remove the face up stacker assy (see 2.3.8).

(4) Remove the stacker cover assy (see 2.3.12).

(5) Disengage the eject roller assy 1 from the lower base 2 by pressing the latch section of the eject

roller assy 1 in the direction of the arrow shown below, and remove the eject roller assy 1.

1

2

LATCH

Y103920-3 Service Manual 30

2.3.10 Motor Assy

(1) Remove the upper cover assy (see 2.3.1).

(2) Remove the operator panel assy (see 2.3.3).

(3) Remove the face up stacker assy (see 2.3.8).

(4) Remove the lower base unit (see 2.3.4).

(5) Stand the lower base unit on its side as shown, and unlock two latches, then remove the motor assy

1.

(6) Remove screw 2 and remove the bracket-Motor-Sub 3 from the Motor bracket.

1

2

3

Y103920-3 Service Manual 31

2.3.11 Hopping Roller Shaft Assy

(1) Remove the upper cover (see 2.3.1).

(2) Remove the operator panel assy (see 2.3.3).

(3) Remove the face up stacker assy (see 2.3.8).

(4) Remove the lower base unit (see 2.3.4).

(5) Remove the motor assy (see 2.3.10).

(6) With the lower base unit 1 standing on its side, remove the one-way clutch gear 2 and the bearing

(A) 3.

(7) Remove the hopping roller shaft assy 4 (the bearing (B) 5 comes off, so be careful not to lose it).

2

3

1

4

5

Y103920-3 Service Manual 32

2.3.12 Stacker Cover Assy

(1) Remove the upper cover assy (see 2.3.1).

(2) Remove the operator panel assy (see 2.3.3).

(3) Remove the face up stacker assy (see 2.3.8).

(4) Remove the motor assy (see 2.3.10).

(5) Remove the reset lever R 1.

(6) Remove one screw, detach the reset spring 2 from the lower base unit 3, turn the reset lever L

4 in the direction of arrow A until it stops, and remove it in the direction of arrow B.

(7) Unlock two latches of the lower base unit 3, then remove the stacker cover assy 5.

Note :

When reinstalling the reset lever L 4, fit it onto the guide of the lower base unit 3, turn it in the
direction of arrow C while pressing down the shaft of back up roller, and engage the reset lever
L 4.

5

1

A

4

2

B

A

C

3

4

Y103920-3 Service Manual 33

2.3.13 Registration Roller

(1) Remove the upper cover (see 2.3.1).

(2) Remove the operator panel assy (see 2.3.3).

(3) Remove the face up stacker assy (see 2.3.8).

(4) Remove the lower base unit (see 2.3.4).

(5) Remove the motor assy (see 2.3.10).

(6) Unlock the latch at the left side of the paper guide (R) 1 and remove the paper guide (R) 1.

(7) With the lower base unit standing on its side, remove the one-way clutch gear 2 and the bearing 3.

(8) Remove the Registration Gear by unloking the latch of the Gear 4.

(9) Remove the Registration Bearing L 5.

(10) Press the registration roller 6 in the direction of arrow A and lift up the left side of it, then remove

the registration roller Assy 7.

(11) Pull out the registration roller Assy 7 in the direction of arrow B.

(12) Remove the pressure roller Assy gear 8 by unloking the latch of the gear 8.

(13) Remove the bearing-Registration L 9 and bearing Registration R 0.

(14) Remove the Spring A from the bearing 9, 0.

2

3

8

9

5

A

A

1

0

7

4

View A

6

View A

A

B

Y103920-3 Service Manual 34

2.3.14 Roller Transfer Assy

(1) With the power switch turned off, unplug the AC cord from the outlet.

(2) Open the stacker cover.

(3) Remove the spacer 1.

(4) Release the roller transfer assy 2 by unlocking two latches of the bearing TR (never apply excessive

force when unlocking the latch) and slide the roller transfer assy left to remove the gear from the
bracket.

(5) Lift the right side of the roller transfer assy 2, and shift it to the right side, then pull it out from the

main unit (at this time, the bearings 3 of the left side and holder-TR 4 of the right side of the roller
transfer assy 2 will also come off).

1

1

2

1

3

4

Latches

Y103920-3 Service Manual 35

2.3.15 Fusing Unit

(1) Remove the upper cover (see 2.3.1).

(2) Remove the operator panel assy (see 2.3.3).

(3) Remove the face up stacker assy (see 2.3.8).

(4) Remove the lower base unit (see 2.3.4).

(5) Remove the stacker cover assy (see 2.3.12).

(6) Remove the connecting cable 1 of the heater and connecting cable 2 of the thermistor from the

hooks of the lower base.

(7) Remove four screws 3, lift and remove the fusing unit 4.

Caution: Fusing unit may be hot. Use care when handling.

Notes : 1.

When reinstalling or removing the fusing unit, tighten or loosen the screws while holding
the fusing unit assy 4 down with your hand (it is being pushed up by back up roller).

2.

When reinstalling the screws 3, be sure to direct the screws into preexisting thread and
avoid damaging the threads.

3.

Do not apply excessive torque when tightening the screws 3.

4

1

3

3

2

Y103920-3 Service Manual 36

2.3.16 Back-up Roller

(1) Remove the fusing unit assy (see 2.3.15).

(2) Lift the left side of the back-up roller 1, and pull it out to the left side (at this time, two bearing Holders

(back-up) 2 and the bias springs (back-up) 3and the two ball-bearings 4, washer C 5 will also
come off).

3

5

2

4

1

2

3

4

Y103920-3 Service Manual 37

2.3.17 Sensor Plate (Inlet)

(1) Remove the upper cover (see 2.3.1).

(2) Remove the operator panel assy (see 2.3.3).

(3) Remove the face up stacker assy (see 2.3.8).

(4) Remove the lower base unit (see 2.3.4).

(5) Unlock the latch at the left side of the paper guide (R) 1 and remove the paper guide (R) 1.

(6) Press the clamps of three sensor plates (inlet and paper) 2, and remove them by pressing them

upward from the bottom. When removing the sensor plates, take care not to lose the springs.

Sensor plate (inlet)

Sensor plate (paper)

Sensor plate (inlet)

Spring sensor IN

Spring sensor IN

Spring sensor write

2

2

2

2

1

Y103920-3 Service Manual 38

2.3.18 Sensor Plate (Outlet), Sensor Wire Assy

(1) Remove the upper cover assy (see 2.3.1).

(2) Remove the operator panel assy (see 2.3.3).

(3) Remove the eject roller assy (see 2.3.9).

(4) Remove the face up stacker assy (see 2.3.8).

(5) Remove the lower base unit (see 2.3.4).

(6) Remove the fusing unit assy (see 2.3.15).

(7) Press the clamps of the sensor plate (outlet) 1, and remove the sensor plate by pushing it up.

(8) Turn the clamps of the sensor wire assy 2 remove the sensor wire assy from the lower base unit.

1

1

2

2

Y103920-3 Service Manual 39

2.3.19 Manual Feed Guide Assy

(1) Remove the upper cover assy (see 2.3.1).

(2) Open the manual feed guide assy 1, and release the engagement on both sides with the main unit

by carefully bending the manual feed guide assy 1.

Note :

When remounting, verify the proper the engagements as shown in the diagram.

Put the post into the groove.

Put the post into the groove.

1

Y103920-3 Service Manual 40

2.3.20 Sensor Plate (Paper Supply)

(1) Remove the upper cover assy (see 2.3.1).

(2) Remove the operator panel assy (see 2.3.3).

(3) Remove the face up stacker assy (see 2.3.8).

(4) Remove the lower base unit (see 2.3.4).

(5) Press the clamps of the sensor plate (paper supply) 1 to unlock the latch, and remove it from the

base plate 2.

View A

1

View A

1

2

Y103920-3 Service Manual 41

2.3.21 GRV-2 PCB

(1) Remove the upper cover assy (see 2.3.1).

(2) Remove the operator panel assy (see 2.3.3).

(3) Remove the face up stacker assy (see 2.3.8).

(4) Remove the lower base unit (see 2.3.4).

(5) Remove three screws 1 and two screws 2.

(6) Remove the connector FAN, and disconnect the fan motor 3.

(7) Remove the three connectors PW_1, PW_2 and HVIF.

(8) Remove the GRV-2 PCB 4 and plate earth A 5 and plate earth (Env) 6 .

Note :

When reinstalling the GRV-2 PCB 4 onto the base plate 7, insert the edge of the GRV-2 PCB
4 in two slots of the base plate 7.

3

5

4

1

7

2

6

Y103920-3 Service Manual 42

2.3.22 Power Supply Board and High Voltage/Sensor Board

(1) Remove the upper cover assy (see 2.3.1).

(2) Remove the lower base unit (see 2.3.4).

(3) Remove two screws 1 and the guide plate 2.

(4) Remove the AC inlet 3 from the guide plate 2.

(5) Remove the screw 4 and remove the grounding (earth) wire 5.

(6) Remove the connectors CN2 from power supply board 6 and CN1 from high voltage/sensor board 0.

(7) Remove ten screws 7, and remove the power supply board 6 and high voltage/sensor board 0.

(8) Remove the Insulation plate 8 from the base plate 9.

Notes : 1.

Be careful about the sensor (paper supply) when reinstalling the lower base.

2.

Make sure that no excessive force is applied to the power supply switch.

3.

When installing the power supply board onto the base plate, be careful not to bend the
base plate (it is desirable to place a block underneath it to prevent bending).

0

6

8

7

7

7

7

1

1

5

3

4

2

9

Y103920-3 Service Manual 43

2.3.23 Cassette Guide L Assy

(1) Remove the paper cassette.

(2) Remove the upper cover assy (see 2.3.1).

(3) Remove the lower base unit (see 2.3.4).

(4) Remove two screws 1, and remove the beam plates 2.

(5) Remove the cassette guide L Assy 3 by shifting it in the direction of the arrow as shown below.

(6) Remove the earth plate 4.

2

1

3

4

Y103920-3 Service Manual 44

2.3.24 Cassette Guide R Assy

(1) Remove the paper cassette.

(2) Remove the upper cover assy (see 2.3.1).

(3) Remove the lower base unit (see 2.3.4).

(4) Remove two screws 1, and remove the beam plates 2.

(5)

Remove the cassette guide R Assy 3 by shifting it in the direction of arrow.

(6) Remove the earth plate 4 and the cassette lock spring 5.

5

2

1

1

3

4

Y103920-3 Service Manual 45

3. ADJUSTMENT

This chapter provides explanations concerning the adjustment necessary when replacing a part. The
adjustment is made by changing the parameter value set in EEPROM on the main control board. The
parameter can be set by the key operation from the operator panel. This printer has three kinds of
maintenance modes, and it is necessary to select one of the modes when replacing any parts.

3.1 Maintenance Modes and Functions

3.1.1 User Maintenance Mode (Administrator Menu)

In order to enter Admin MENU, turn the printer on while holding down the ITEM+/ITEM- switch.

Function

There are seventeen functions as follows:

Functions

Sets All Category Enable/Disable of User Menu.
Set to Disable, User Menu is not shown. Subsequent Items are
not displayed if the Categories are disabled. Panel Lock is
available when this MENU is set to DISABLE.

Sets Category INFORMATION MENU Enable/Disable.
Set to Disable, Category INFORMATION MENU of User Menu is
not displayed.

Sets Category PRINT MENU Enable/Disable.
Sets to Disable, Category PRINT MENU of User Menu is not
displayed.

Sets Category MEDIA MENU Enable/Disable.
Sets to Disable, Category MEDIA MENU of User Menu is not
displayed.

Sets Category SYSTEM CONFIG MENU Enable/Disable.
Set to Disable, Category SYSTEM CONFIG MENU of User Menu is
not displayed.

Sets Category PCL EMULATION MENU Enable/Disable.
Set to Disable, PCL EMULATION MENU of User Menu is not
displayed.

Sets Category PPR EMULATION MENU Enable/Disable.
Set to Disable, PPR EMULATION MENU of User Menu is not
displayed.

Sets Category FX EMULATION MENU Enable/Disable.
Set to Disable, FX EMULATION MENU of User Menu is not
displayed.

Sets Category ESC/P EMULATION MENU Enable/Disable.
Set to Disable, ESC/P EMULATION MENU of User Menu is not
displayed. (Displayed only for Domestic market)

Sets Category PARALLEL MENU Enable/Disable.
Set to Disable, Category PARALLEL MENU of User Menu is not
displayed.

Sets Category RS232C MENU Enable/Disable.
Set to Disable, Category RS232C MENU of User Menu is not
displayed. Displayed only if RS232C is intalled.

Sets Category USB MENU Enable/Disable.
Set to Disable, Category USB MENU of User Menu is not
displayed.

Sets Category NETWORK MENU Enable/Disable.
Set to Disable, Category NETWORK MENU of User Menu is not
displayed.
Displayed only if a NIC is installed.

Item

ALL

INFO.

PRINT

MEDIA

SYS CONF

PCL
MENU

PPR
MENU

FX MENU

ESC/P

PARALLEL

RS232C

USB

NETWORK

Value

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

Category

OP MENU

Y103920-3 Service Manual 46

Functions

Sets Category MEMORY MENU Enable/Disable.
Set to Disable, Category MEMORY MENU of User Menu is not
displayed.

Sets Category SYSTEM ADJUST MENU Enable/Disable.
Set to Disable, Category SYSTEM ADJUST MENU of User Menu is
not displayed.

Sets Category MAINTENANCE MENU Enable/Disable.
Set to Disable, Category MAINTENANCE MENU of User Menu is
not displayed.

Sets Category USAGE MENU Enable/Disable.
Set to Disable, Category USAGE MENU of User Menu is not
displayed.

Item

MEMORY

ADJUST

MAINTE

USAGE

Value

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

ENABLE

DISABLE

Category

OP MENU

Detailed descriptions of these functions are provided in Appendix E, DIAGNOSTICS TEST.

3.1.2 System Maintenance Mode (System Maintenance Menu)

Note:

This mode is used only by maintenance personnel and it should not be released to the end­users.

The printer enters System Maintenance Menu when the power supply switch is turned ON while the
Menu/Item+/Value-/Cancel switches are held down.

Function

There are functions as follows:

Functions

Sets brands;
JPOEM1:Japanese OEM(1)
JPOEM2:Japanese OEM(2)
OEMA:Overseas OEM for A4 default
OEML:Overseas OEM for Letter default
Selecting brand will automatically prompt reboot.

Initializes Flash ROM forcedly.
Every Flash ROM installed is subject to initialization.

Initializes EEPROM.
Special items, such as MAC Address, are not initialized.

Sets Russian/Greek and view/not view.
TYPE1: Not view Russian/Greek.
TYPE2: View Russian/Greek.
Use a panel that supports Russian/Greek to view Russian/Greek.

Selecting by the Select switch, then pressing the On-line switch will
prompt initialization and printing Engine information.

Sets printing or not printing the total page count in PRINT MENU MAP.

Item

OKIUSER

FL FOR­MAT

EEPROM

CODESET

ENG STAT

PAGE PRT

Value

ODA
OEL
APS
JP1
JPOEM1
JPOEM2
OEMA
OEML

EXECUTE

RESET

TYPE1
TYPE2

PRINT

ENABLE
DISABLE

Category

OKIUSER

MAINTE
MENU

CONFIG
MENU

ENG STAT

PAGE PRT

Y103920-3 Service Manual 47

Functions

Changes the default PDL for each brand. PDLs that are disabled in this
menu will not be displayed at EMULATE of User Menu or OP MENU of
Admin Menu. (No specific to PCL XL is provided; thus, when DISABLE
is set, there is not visual change.)
When print data in the PDL language set to DISABLE is received, the
printer will desplay INVALID DATA and discard received data.
PS3 EMU will be displayed only when PSE is installed.
For this model, PCL cannot be set to DISABLE. (ENABLE must be set
to make it always usable. Even if set to DISABLE, received data will
be processed.)

Displayed only if an RS232C is installed.
Loop Test runs Serial I/F function test without connecting the host PC.
The printer alone sends/receives “00”FFH” data.
Loop Test requires attachment of a Loop connector (pin2: TD and pin3:
RD are shorted) prior to execution.
A Loop count is displayed real-time on LCD, and if an error occurs, an
error message will be displayed.
This mode can be ended only by turning the power off. Following this
operation, the power is shut down; thus, the printer cannot go back in
Operation Mode or other Maintenance Mode.

PRINTING Rolling ASCII Continuous Print Continuously prints Rolling
ASCII patterns for various types continuos testing on the maker side.
(Noise test, engine test).
This mode can be ended by pressing the “ONLINE” SW.Following this
operation, the power turns off, thus, the printer cannot return to either
operation mode or any of other maintenance modes.

Set the dot shift for the horizontal direction when printing from Tray 1.
This area will not be initialized by the EEPROM reset operation.

Set the dot shift for the horizontal direction when printing from Tray 2.
This item is displayed even when Tray 2 is not set. This area will not be
initialized by the EEPROM reset operation. (At first, it is initialized by
default.)

Set the dot shift for the horizontal direction when printing from MPF.
This item is displayed even when MPF is not set. This area will not be
initialized by the EEPROM reset operation. (At first, it is initialized by
default.)

Set the dot shift for the horizontal direction when printing from the
manual slot.
This area will not be initialized by the EEPROM reset operation. (At first,
it is initialized by default.)

Details depend on NETWORK.

Enters Engine Maintenance Menu.

Item

PCL

IBM PPR

EPSONFX

PS3 EMU

ESC/P

PCL XL

RS232C

CONT PRT

TRAY1

TRAY2

MPF

MANUAL

Value

ENABLE
DISABLE

ENABLE
DISABLE

ENABLE
DISABLE

ENABLE
DISABLE

ENABLE
DISABLE

ENABLE
DISABLE

EXECUTE

EXECUTE

-4.0 mm

˜

-0.5 mm
0 mm
+0.5 mm

˜

+3.5 mm

-4.0 mm

˜

-0.5 mm
0 mm
+0.5 mm

˜

+3.5 mm

-4.0 mm

˜

-0.5 mm
0 mm
+0.5 mm

˜

+3.5 mm

-4.0 mm

˜

-0.5 mm
0 mm
+0.5mm

˜

+3.5 mm

Category

EMULATE

LOOPTEST

COMT
PRT

DOTSHIFT

NETWORK

ENG DIAG

Detailed descriptions of these functions are provided in Appendix E, DIAGNOSTICS TEST.

Y103920-3 Service Manual 48

3.1.3 EEPROM Initial Setting Range for Events

As for initialization of EEPROM, ranges differ the whole phenomenon.
"O" is initialized. "–" is not initialized.

Table 3-1 The Initial-Setting domain of EEPROM

CU EEPROM Area PU EEPROM Area

No Events

(*1) The model (forcing) which operated before is for operating as another model (forcing), and a Brands check is
recognized as an error and resets change of the Brands point by the PJL command, operation at the time of
the power supply injection by new EEPROM, etc.
(*2) It restricts to the time when whose page counter is 500 or less sheets, and is reset by 0. (ENGINE RESET by
the PJL command is not this limitation.)
(*3) Although a DOT SHIFT setting menu exists in a system maintenance menu, since setting value preservation
area is arranged at PU EEPROM AREA, even when the system maintenance menu item is initialized, a DOT
SHIFT setup is not initialized. On the contrary, when PU EEPROM AREA is initialized, a DOT SHIFT setup is
also initialized.

1

2

3

4

5

6

—

—

O

O

—

—

User Maintenance
Menu EEPROM
RESET Operation

F/W Revision
check error at the
time of a power
on.

CU EEPROM area
mapping Revision
check error at the
time of a power
on.

Brands area check
error at the time of
a power on.(*1)

Engine
Maintenance
Menu ENGINE
RESET Operation

PU EEPROM area
mapping check
error at the time of
a power on.

Factory

Default

Area

O

O

O

O

—

—

User

Menu

Area

—

O

—

O

—

—

F/W

Revision

Area

—

—

—

—

O

O

Drum

Counter

—

—

—

—

O

(*2)

O

Page

Counter

—

—

—

—

O

O

Toner Dot

Counter

—

O

O

O

—

—

Administrator Menu

/ System

Maintenance Menu

Area(*3)

—

—

—

—

—

O

(*3)

Engine Maintenance Menu Area

—

—

—

O

—

—

Brands

Area

Y103920-3 Service Manual 49

3.2 Adjustment When Replacing a Part

Adjustment is necessary when replacing any of the following parts.

Part Replaced Adjustment

Image Drum Cartridge

Main Control Board

Reset the image drum counter
(refer to User's manual).

EEPROM data Upload / Download

3.2.1 Uploading/Downloading EEPROM data

When the controller printed circuit board is replaced, the contents of the old EEPROM shall be copied
to the new EEPROM on the new board to preserve customer settings. For the purpose, use the
Maintenance Utility.

A operation method of Maintenance Utility, please refer to Maintenance Utility Operating Specifications.

The maintenance utility is designed to be used only by field engineer and it should not be released to
the end-users.

Y103920-3 Service Manual 50

4. PERIODICAL MAINTENANCE

4.1 Periodical Replacement Parts

The parts are to be replaced periodically as specified below:

White lines or stripes

(void, light printing)

4.2 Cleaning

Remove any toner or dust accumulated inside the printer. Clean in and around the printer with a piece
of cloth when necessary. Use the handy cleaner (service tool) to clean inside the printer.

Note:

Do not touch the image drum, LED lens array, or LED head connector block.

4.2.1 Cleaning of LED Lens Array

Clean the LED lens array or replace the toner cartridge when white lines or stripes (void, light printing)
are generated vertically down the page, as shown below.

Note:

The LED lens array must be cleaned with an LED head cleaner included in the replacement toner

kit.

Part name Condition for replacement Cleaning Remarks

Toner cartridge 2.5K

(Type 9)

Toner cartridge 6K

(Type 9)

Image drum cartridge

(Type 9)

LED head

LED head

About 2,500 sheets of paper have been printed.

About 6,000 sheets of paper have been printed.

About 25,000 sheets of paper have been printed.
See 1.4. (14)

Consumables

Consumables

Consumables

(1) Set the LED head cleaner to the LED lens array as shown in the figure, then slide the cleaner back

and forth horizontally several times to clean the head.

Note:

Gently press the LED head cleaner onto the LED lens array.

(2) Throw the cleaner pad away.

LED lens array

LED head clean pad

Y103920-3 Service Manual 51

4.2.2 Cleaning Page Function

There is a charge roller cleaning function with this printer, which can be executed by the user.

(1) 1 Press the MENU key several times, and the LCD displays "MAINTE MENU".

2 Press the ITEM key, and the LCD displays "CLEANING PRINT".

3 Press the SELECT key. The printer enters the cleaning mode.

(2) The LCD displays "MANUAL" on the upper line, and on the lower line, "LETTER REQUEST" is

displayed, scrolling one character width at a time from right to left "LETTER" on the lower line may
instead be "A4" depending on the printer designation.

When the above messages appear on the LCD, the user can verify that the printer has entered the
cleaning mode and that it is requesting insertion of a letter (or A4) size paper into the manual
feederslot.

(3) Insert a sheet of paper into the manual feeder slot.

(4) Toner attached to the image drum is transferred onto the inserted sheet, and the sheet is ejected

with the toner residues printed. While this process is going on, the LCD displays "PRINT
CLEANING" message.

(5) The printer returns to "MAINTE MENU".

The LCD displays "CLEANING PRINT".

Y103920-3 Service Manual 52

5. TROUBLESHOOTING PROCEDURES

5.1 Troubleshooting Tips

(1) Check the troubleshooting section in the Printer Handbook.

(2) Gather as much information about the situation as possible.

(3) Inspect the equipment under the conditions close to those in which the problem had occurred.

5.2 Points to Check before Correcting Image Problems

(1) Is the printer being run in proper ambient conditions?

(2) Are supplies (toner) and routine replacement part (image drum cartridge) being replaced properly?

(3) Is the printing paper normal (acceptable quality)?

(4) Is the image drum cartridge being loaded properly?

5.3 Tips for Correcting Image Problems

(1) Do not touch, or bring foreign matter into contact with the surface of the image drum.

(2) Do not expose the image drum to direct sunlight.

(3) Keep hands off the fuser unit as it heats up during operation.

(4) Do not expose the image drum to light for longer than 5 minutes at room temperature.

Y103920-3 Service Manual 53

5.4 Preparation for Troubleshooting

(1) Operator panel display

The failure status of the printer is displayed by the liquid crystal display (LCD) of the operator panel.
Take proper corrective action as directed by messages which are being displayed on the LCD.

Status message display

Ready LED display

: Off : Blinking

: On : Undefined

5.5 Troubleshooting Flow

Should there be a problem with the printer, carry out troubleshooting according to the following procedure
flow:

5.5.1 LCD Status Message/Problem List

The status and problems which may be displayed by messages on the LCD are listed in Table 5-1.

Problems

Problems
indicated by LCD
message

Image problems
(and problems which
are not indicated by
LCD message)

Carry out a detailed
troubleshooting with the
troubleshooting chart.
See Section 5.5.2.

Carry out a troubleshooting
with the troubleshooting chart.
See Section 5.5.3.

Troubleshoot from the LCD
status message list.
See Section 5.5.1.

Y103920-3 Service Manual 54

LEDStatus level

Table 5-1 (1/5)

Light

No Light

Varies

Varies

Blink

Varies

Varies

Varies

Blink

Blink

Blink

Blink

Varies

Varies

Varies
or Blink

Normal

Normal

Normal

Normal

Normal

Normal

Normal

Normal

Normal

Normal

Normal

Warn­ing

Normal

Normal

Warn­ing

The following are the meaning of the symbols in the LCD display.

“TRAY2” is indicated only when the second tray is set, and “MPF” is displayed only when the
multipurpose feeder is set.

xxxx: Emulation (AUTO, PCL, PSE, PPR, FX)
tttt: Trays (TRAY1, TRAY2, MPF, MANUAL)
mmmm: Paper Size (LETTER, A4 SIZE, ..., B5 SIZE, A6 SIZE)
pppp: Media type (Plain, Transparency, ...)
cccc: COVER (UPPER, TRAY2)

The following are indicated in the contents section of the displayed table.

(Job Account-related): Displayed only when the Job Account function is valid.
(PSE-related): Displayed only when PSE is set.

(PSE stands for Postscript3 Emulation. Only when PSE is set.)
(TRAY2-related): Displayed only when TRAY2 is set.
(RS232C-related): Displayed only when an RS232C card is set.
(NIC items): Displayed only when an NIC card is set.

LCD

ON-LINE
xxxx

OFF-LINE
xxxx

FILE
ACCESS

ARRIVE
xxxx

ACTIVE
xxxx

DATA
xxxx

PRINTING

■

■kkk/lll

FLUSHING

FLUSHING
(JAM)

FLUSHING
(DENIED)

FLUSHING
(LOG)

■

WARM UP

■

PWR SAVE

■

TONERLOW

Descroption

Shows on-line status.

Shows off-line status.

Accessing to an accounting file. (Job Account-related)

Data receiving, process not started yet. Displayed mainly during
PJL process without text print data or during job spooling.

Data receiving output processing

Un-printed data remains in Buffer. Waiting for data to follow.

Printer is printing.

Printing a copy. kkk indicates the number of sheet being printed. lll
indicates the total number of sheets that have been printed.
The display for normal printing is applied when the number of
copies is one sheet. This item is displayed combined with a
different message in the first line.

Job cancellation has been instructed. Data is being ignored till the
end of the job.

Indicates a status of discarding data until the end of a job after a
job is cancelled when a jam is generated upon turning jam recov­ery OFF. MSG blinks only on the top LCD line.

Cancelled as permission for printing has not been received. (Job
Account-related)

1. MSG blinks only on the top LCD line when a job is received from
a user who has not received permission for printing.

Indicates that a job has been cancelled as the area storing logs
inside the printer has been drained and furthermore, a “cancel job”
instruction appears when logs are full.
(Job Account-related) MSG blinks only on the top LCD line.

Indicates that the printer is now warming up. This item is displayed
combined with a different message in the first line.

A printer is in power save mode. Displayed combined with other
messages in the first line.

Toner amount is low. Displayed combined with other messages in
the first line. Normal operation is possible. Not displayed, when a
drum counter is in 200 or less state or a "CHG DRUM" state.

• In the case of “LOW TNR” of a menu is "STOP", TONER LOW
is usually detected from a state, LED is blinked, and it once
becomes OFF-LINE. It will be in an ON-LINE state by cover
opening and closing under push ON-LINE SW. If blink will be in
an ON-LINE state, it will usually return to a state.

Y103920-3 Service Manual 55

LEDStatus level

Table 5-1 (2/5)

Varies

Varies

Varies

Varies
or Blink

Varies
or Blink

Varies
or Blink

Varies
or Blink

Varies
or Blink

Varies

Blink

Varies

Varies

Varies

Varies

Varies

Varies

Varies

Light

Warn­ing

Warn­ing

Warn­ing

Normal

Normal

Normal

Normal

Normal

Warn­ing

Warn­ing

Warn­ing

Warn­ing

Warn­ing

Warn­ing

Warn­ing

Warn­ing

Warn­ing

Error

LCD

■

TONEREMP

■

TONERSNS

■

CHG DRUM

PRINT
DEMO

PRINT
FONTS

PRINT
MENU MAP

PRINT
FILELIST

PRINT
CLEANING

INVALID
DATA

■

ERR PSE

■

tttt EMPTY

■

TRAY2 COVER OPEN

■

FILE SYSTEM IS FULL

■

FILE IS WRITE
PROTECTED

■

INVALD ID.JOB
REJECTED

■

LOG BUFFER FULL.
JOB REJECTED

■

FILE OPERATION
FAILED nnn

MANUAL
mmmm REQUEST

Descroption

Toner near empty. (This state occurs after printing 100 sheets from
TONERLOW.)
Displayed combined with other messages in the first line.
Not displayed when “CHG DRUM” for drum life is displayed,
however. Possible to cancel print job or continue normal operation.

Something is wrong with the toner sensor. Displayed combined
with other messages in the first line when the engine is set to
Shipping mode. Normal operation is possible.
Error, explained later, is displayed when the engine is set to
Factory mode.(ERR 163)

Drum cartridge life (Warning). Displayed combined with other
messages of the first line.
TONER EMP ERROR status code is set to 10969 in the state of
warning which has restored temporarily CHG DRUM ERROR
(40996) when the drum life has occurred at the same time by
cover open/close presses "ON-LINE" switch.
A status code is set to 10060 in the state of CHG DRUM inde­pendent warning.

Demo page printing.

Fonts sample printing.

Menu map printing.

File list printing.

Cleaning page printing.

Received invalid data. Prompts the user to press ON-LINE switch
to clear Warning display. Displayed when the printer receives an
unsupported PDL command.

Interpreter detects an error due to following reasons.
Data received after this is ignored till the end of the job.
When the job is received completely, this is automatically cleared.

- The job has a grammatical error.

- The page is complicated, and VM was used up.

Tray tttt has run out of paper. Handled as Warning until the user
designates the tray that has run out of paper. * Scroll display

Second Tray Cover Open
* Scroll display

Flash Full has occurred. This is a transient warning.
Displayed until the job is completed, then, cleared. * Scroll display

An attempt to write in a write-protected file was made.
Because this is a transient warning, it is displayed until the job is
completed. then, cleared. * Scroll display

Notifies a user that the job has been cancelled as permission for
printing has not been received. (Job Account-related) This is
displayed until the ON LINE key is pressed. * Scroll display.

Notifies a user that the job has been cancelled as the log buffer is
full. (Job Account-related) This is displayed until the ON LINE key
is pressed. * Scroll display.

A FLASH error other than No.26 and No.27 has occurred.
Operation that does not use FLASH is possible. * Scroll display

Manual print request. Prompts the user to set paper indicated by
mmmm manually. * Scroll display

Y103920-3 Service Manual 56

DescroptionLED

Table 5-1 (3/5)

Indicates that a print request was sent to the tttt tray that has
become empty. A message for setting mmmm paper.
TRAY1
TRAY2
MPF * Scroll display.

Print request has been made to the 2nd tray route cover open. To
continue, close cover. * Scroll display

The media type in the tray and the edit media type do not match.
TRAY1
TRAY2
MPF * Scroll display

The paper size in the tray and the edit size do not match.
TRAY1
TRAY2
MPF * Scroll display

RS232C Overflow has Occurred.
To continue, press ON-LINE switch(RS232C related)

RS232C Over Run has Occurred.
To continue, press ON-LINE switch(RS232C related)

RS232C Parity Error has Occurred.
To continue, press ON-LINE switch(RS232C related)

RS232C Framing Error has Occurred.
To continue, press ON-LINE switch(RS232C related)

Initializing (rebooting) a section related to NIC.
MSG blinks only on the top LCD line. (NIC-related)

Toner Low has passed, and almost no toner is left in the cartridge. For
temporary operation, open/close the cover or press “ON-LINE” switch, to
recover the printer operation. But basically you must change the toner
cartridge.
Displayed after printing 100 sheets after Toner Low was sensed, to
prompt the user to change the cartridge. after this, the printer
recovers with Cover Open/Close or when user presses “ON-LINE”
switch, then, after printing 30 pages, this message is displayed.
Even after this, the printer recovers when the user opens and
closes the cover, or he presses the “ON LINE” switch, but this
message is displayed for each sheet ejected.
During Change Drum Alarm, however, “CHG DRUM /(the lower line
spaces), not this message, is displayed, to prompt the operator to
replace the drum, and prevent him from replacing the toner.

Memory capacity has overflowed due to the following reasons. To
continue, press ON-LINE switch. Install expansion RAM or de­crease the data amount.

- Too much print data in a page.

- Too much Macro data.

- Too much DLL data.

- After frame buffer compression, overflow has occurred.
* Scroll display

Warns that paper of the inappropriate size has been fed from the
tray. Check whether Multi-feed has happened.
To continue for Recovery Print, open and close the cover.
* Scroll display

Paper jam occurred when paper was being fed from tttttt tray.
TRAY1
TRAY2
MPF * Scroll display

Jam has occurred in the paper path.
Paper Feed
Transport (Message of 10.5 is displayed)
* Only Exit jam is identified.
* Scroll display

No Light

No Light

No Light

No Light

No Light

No Light

No Light

No Light

Varies

No Light

No Light

No Light

No Light

No Light

Status level

Error

Error

Error

Error

Error

Error

Error

Error

Error

Error

Error

Error

Error

Error

LCD

LOAD mmm
tttt EMPTY

CLOSE COVER
TRAY2 COVER OPEN

CHANGE PAPER TO
mmmm/pppp
tttt MEDIA MISMATCH

CHANGE PAPER TO
mmmm/pppp
tttt SIZE MISMATCH

RS232C
OVERFLOW

RS232C
OVER RUN

RS232C
PRY ERR

RS232C
FRM ERR

NETWORK
INITIAL

TONEREMP
CHG CART

MEMORY
OVERFLOW

OPEN UPPER COVER
PAPER SIZE ERROR

CHECK tttt
PAPER JAM

OPEN UPPER COVER
PAPER JAM

Y103920-3 Service Manual 57

LCD

OPEN UPPER COVER
EXIT JAM

CHG DRUM

CHECK IMAGE DRUM
DRUM MISSING

CLOSE COVER
UPPER COVER OPEN

DL MODE
xxxx

POWER OFF/ON
NETWORK ERROR

REBOOT
X

ERR nnn

LED

Table 5-1 (4/5)

No Light

No Light

No Light

No Light

Varies

No Light

No Light

No Light

Status level

Error

Error

Error

Error

-

Error

-

Fatal

020

030

034

035

040

041

042

043

050

051

063

070

072

073

074

075

076

077

102

103

106

120

121

Descroption

Jam occurred when paper was exiting.
Open the cover and remove the paper inside the printer.
Close the cover to continue for Recovery Print. * Scroll display

Notifies the user of the drum life. For temporary operation, open/
close the cover or press “ON-LINE” switch, to recover the printer
operation. But basically you must change the drum.
If Change Drum Alarm occurs at Toner Empty display timing, this
message is displayed. This prompts the user to replace the drum,
and prevent him from replacing the toner.

Indicates that the drum is not set properly.

The cover is open.
UPPER Stacker * Scroll display

Downloading via NIC. The download status is indicated in the
bottom line. Refer to the Network specifications for details. (NIC­related)

Network error has occurred.
* Scroll display

This message is displayed when the printer is rebooted. The lower
display shows the code indicating the reason for the reboot.
Reason Codes (X):
0: Factor(s) other than those shown below
1: PJL command reception
2: Operation panel operation
3: PostScript quit operator
4: Specification mode via network

Note: The following error names are not displayed:
* Scroll display

CU ROM Hash Check Error 1

CU Slot1 DIMM RAM Check Error

RAM configration error

Slot1 RAM Spec error

CU EEPROM ERROR

CU FLASH ERROR

FLASH FILE SYSTEM ERROR

FLASH FILE SYSTEM VERSION MISMATCH

Operator Panel Error

CU FAN ERROR

HOST_IF_NO_DRIVER:PCI

CANT_HAPPEN

Engine communication error

H/W overrun detect

F/W Overrun detect

VIC Limutter

VIC decomp write error (reserved: for monochrome product only)

VIC illegal decomp error (reserved: for monochrome product only)

Engine RAM Error (Reserved)

Engine SRAM Error (Reserved)

Engine Control Error

PU Board Fan Motor Error

Power Supply LSI Error (Reserved)

Y103920-3 Service Manual 58

Power Supply Fan Motor Error (Reserved)

Humidity Sensor (Reserved)

Temperature Sensor (Reserved)

Multi purpose tray home error (Reserved)

LED Head Over Temperature

LED Head Missing, Color: Black (Reserved)

Drum Up/Down, Color: Black (Reserved)

Toner Sensor Error, Color: Black

Upper Thermistor, State: Short

Upper Thermistor, State: Open

Upper Heater Temp, State: High

Upper Heater Temp, State: Low

Fuser Mismatch (Reserved)

I/F Error, Loc: Envelop feeder

I/F Error, Loc: Tray2

I/F Error,Loc: Control Panel (Reserved)

System Memory Overflow

PU F/W download check SUM error (Reserved)

PU F/W Flash write error (Reserved)

PU F/W Flash data missing (Reserved)

IMAGE ACK illegal page ID

IMAGE SET Trans error (Reserved)

No page at DUP IN (Reserved)

No page at PPOUT

Illegal function call

Parameter error

EM Null page cargo

EM Null page

EM No video queue

EM Illegal sequence

Machine check Exception

DSI Exception

ISI Exception

Alignment Exception

Program Exception

Floating-point unavailable Exception

Instruction address breakpoint Exception

Thermal management interrupt Exception

Instruction TLB miss

Data TLB miss

Data TLB store miss

Indicates that the controller side is initializing.

Indicates that EEPROM is initializing.

Indicates that the RAM is being checked.
* is indicated after each time one-eighth of the total space is checked.

Displayed at power ON.

LED

Table 5-1 (5/5)

No Light

No Light

No Light

No Light

No Light

Status level

122

123

124

125

130

134

143

163

170

171

172

173

179

180

182

187

190

200

201

202

203

204

205

206

207

208

210

211

212

213

001

002

003

004

005

006

007

008

009

010

011

Normal

Normal

-

Normal

DescroptionLCD

ERR nnn

INITIAL­IZING

EEPROM
RESET’NG

RAM CHK
********

■■■■■■■■

■■■■■■■■

Y103920-3 Service Manual 59

5.5.2 LCD Message Troubleshooting

If the problems cannot be corrected by using the LCD status message/problem list, follow the
troubleshooting flowcharts given here to deal with them.

1.

2.

3.

4.

5.

6.

Trouble

The printer does not work normally after the power is turned on.

Jam alarm

Paper size error

Fusing unit error

SSIO (Synchronous Serial Input/Output) error I/F timeout
(no response) between the printer and an optional tray
(High Capacity Second Paper Feeder, Power Envelope Feeder).

Fan error

Flowchart number

1

2

-1

2

-2

2

-3

3

4

5

6

No.

Paper input jam

Paper feed jam

Paper exit jam

Y103920-3 Service Manual 60

1 The printer does not work normally after the power is turned on.

• Turn the power off, then back on.

• Is all black message being displayed by the LCD display?

• No Is the AC cord being connected properly?

• No Connect the AC cord properly.

• Yes Is +5 V being applied between Pins 3 and 1 of PW_2 connector on the main control
board?

Pin 1 : 0 V
Pin 3 : +5 V

• No Is the connection between PW_1/PW_2 connector on the main control board

and connector CN2 on the power supply board board being made properly?

No Correct the connection.

• Yes Replace the power supply board.

• Yes Is +3.3 V being applied between Pins 5 (GND) and 8 of IC13?

Pin 5 :0 V
Pin 8 :+3.3 V

• No Replace the main control board.

• Yes Is the flexible cable for the operator panel assy being connected to the LCDPNL
connector on the main control board and the connector CN on the OPE board properly?

• No Connect the flexible cable properly.

• Yes Replace the operator panel assy or flexible cable.

• Has the problem been solved?

• No Replace the main control board.

• Yes End

• Yes Is message being displayed by the LCD display?

• No Replace the main control board.

• Yes Is message being displayed by the LCD display?

XXX: PCL, AUTO, PSE*, HEX DUMP, PPR, FX
* PSE means Postscript 3 Emulation.

• No Take actions according to the LCD status message/problem list (see Section

5.5.1 for corrective actions).

• Yes End

INITIAL­IZING

ON-LINE

XXX

■■■■■■■■

■■■■■■■■

Y103920-3 Service Manual 61

[JAM error]

2 - 1 Paper input jam

• Does the JAM error occur when the power is turned on?

• Yes Is the paper at the inlet sensor?

• Yes Remove the paper.

• No Is the operation of the inlet sensor plate normal (moves freely when it is touched)?

• No Replace the inlet sensor plate.

• Yes Clean the inlet sensor on the high voltage/sensor board, or replace the high voltage/
sensor board.

• No Does the JAM alarm occur after paper feeding?

• Yes Is the paper fed to the inlet sensor plate?

• Yes Is the operation of the input sensor plate normal (moves freely when it is touched)?

• No Replace the inlet sensor plate.

• Yes Clean the inlet sensor on the high voltage/sensor board or replace the high voltage/
sensor board.

• No Replace the hopping roller rubber or paper cassette.

• No Is the hopping roller rotating?

• Yes Set the paper tray properly.

• No Is the hopping motor rotating?

• Yes Replace the one-way clutch gear of the hopping roller assembly.

• No Is HM connector on the main control board being connected properly?

• No Connect HM connector properly.

• Yes Is the coil resistance (normal resistance: both between
Pins 1 and 2, as well as Pins 3 and 4 are about 10.3 ý) of
the hopping motor normal?

• No Replace the hopping motor.

• Yes Replace the main control board.

Outlet sensor

Exit roller

Heat roller

Transfer roller

Paper sensor

Registration roller

Inlet sensor 1

Inlet
sensor 2

Toner
sensor

Paper end sensor

Hopping

roller

Paper feeding direction

Y103920-3 Service Manual 62

[JAM error]

2 - 2 Paper feed jam

• Does the paper feed jam occur when the power is turned on?

• Yes Is the paper on the paper sensor plate?

• Yes Remove the paper.

• No Is the operation of the paper sensor plate normal (moves freely when it is
touched)?

• No Replace the paper sensor plate.

• Yes Replace the high voltage/sensor board.

• No Has the paper reached the paper sensor plate?

• No Is the hopping roller rotating?

• No Check the hopping roller assembly or tray or hopping motor.

• Yes Is the image drum cartridge being set properly?

• No Set the image drum cartridge properly.

• Yes Has the paper reached the outlet sensor plate?

• Yes Is the operation of the outlet sensor plate normal (moves freely when it is
touched)?

• No Replace the outlet sensor plate.

• Yes Clean the outlet sensor on the high voltage/sensor board or replace the high
voltage/sensor board.

• No Is the main/drum motor rotating?

• No Is DM connector on the main control board being connected properly?

• No Connect DM connector properly.

• Yes Is the coil resistance (normal resistance: both between Pins l and 2, as well as
Pins 3 and 4 are about 8.6ý) of the main/drum motor correct ?

• No Replace the main/drum motor.

• Yes Replace the main control board.

• Yes Is the transfer roller rotating?

2-2-a

Y103920-3 Service Manual 63

2-2-a

• No Check the gears (transfer roller gear, idle gear and reduction gear).

• Yes Is the fusing unit being installed properly?

• No Install the fusing unit properly.

• Yes Is the image drum cartridge being set properly?

• No Set the image drum cartridge properly.

• Yes Clean the paper sensor on the high voltage/sensor board or replace the high voltage/sensor
board.

[JAM error]

2 - 3 Paper exit jam

• Does the paper exit jam error occur when the power is turned on?

• Yes Is the paper on the outlet sensor plate?

• Yes Remove the paper.

• No In the operation of the outlet sensor plate normal (moves freely when it is touched)?

• No Replace the outlet sensor plate.

• Yes Clean the outlet sensor on the high voltage/sensor board or replace the high voltage/
sensor board.

• No Is the face-up stacker pulled out completely from the printer or, pushed into the printer
completely?

• No Pull the face-up stacker out of the printer completely or push it into the printer completely.

• Yes Is the eject roller assembly being installed properly?

• No Install the eject roller assembly properly.

• Yes Has the coil spring come off the eject roller assembly?

• Yes Install the coil spring to the eject roller assembly.

• No Replace the eject roller assembly.

Y103920-3 Service Manual 64

3 Paper size error

• Is paper of the specified size being used?

• No Use paper of the specified size.

• Yes Are inlet sensor plates 1 and 2 operating properly (moves freely when they are touched)?

• No Replace the inlet sensor plate or clean the inlet sensor on the high voltage/sensor board.

• Yes Does the outlet sensor plate operate properly (moves freely when it is touched)?

• No Replace the outlet sensor plate or clean the outlet sensor on the high voltage/sensor
board.

• Yes Replace the high voltage/sensor board.

Outlet sensor

Exit roller

Heat roller

Transfer roller

Paper sensor

Registration roller

Inlet sensor 1

Inlet
sensor 2

Toner
sensor

Paper end sensor

Hopping

roller

Paper feeding direction

Y103920-3 Service Manual 65

4 Fusing unit error (ERROR 170) (ERROR 171) (ERROR 172) (ERROR 173)

• Turn the power off, then back on again.

• Yes Is the thermistor open or shorted? Measure the resistance between thermistor contacts (heater
contacts 120V/2Ω or 240V/7Ω, and thermistor contacts 200KΩ at room temperature) (see
Figure 5-2).

• Yes Replace the fusing unit.

• No Do the thermistor connector is connected to the main control board connector?

• No Connect the thermistor connector property.

• Yes Is the heater of the fusing unit turned on (when the heater is turned on, light is emitted)?

• Yes Check the thermistor connector or replace the main control board or the fusing unit.

• No Is the AC voltage being supplied to the connector for the heater of the power supply board?

(see Figure 5-2)

• No Replace the main control board or the power supply board.

• Yes Check the heater connector cord and the heater connector for poor contact .

Heater connector

Thermistor connector

Figure 5-2

Y103920-3 Service Manual 66

5 Synchronous serial I/O error or I/F timeout between printer and optional tray

(ERROR 180, 182)

• Is an option tray (High Capacity Second Paper Feeder or Multi Purpose Feeder) being used?

• Yes Is the cable between the main control board and the optional tray being connected
properly?

• No Connect the cable properly.

• Yes Replace the main control board.

• Has the problem been solved?

• No Check the problem by following the Multi Purpose Feeder maintenance manual

of Appendix F or the High Capacity Second Paper Feeder maintenance manual
of Appendix G.

• Yes End

• No Replace the main control board.

6 Fan error (ERROR 120)

• Is the fan rotating?

• Yes Replace the main control board.

• No Is FAN connector on the main control board being connected properly?

• No Connect FAN connector properly.

• Yes Replace the fan or main control board.

Y103920-3 Service Manual 67

5.5.3 Image Troubleshooting

Procedures for troubleshooting for abnormal image printouts are explained below. Figure 5-3 below
shows typical abnormal images.

Figure 5-3

Problem Flowchart number

Images are light or blurred entirely (Figure 5-3

A

)

Dark background density (Figure 5-3

B

)

Blank paper is output (Figure 5-3

C

)

Black vertical belts or stripes (Figure 5-3

D

)

Cyclical defect (Figure 5-3 E )

Prints voids

Poor fusing (images are blurred or peels off when the printed
characters and images on the paper are touched by hand)

White vertical belts or streaks (Figure 5-3

F

)

1
2
3
4
5
6
7

8

A Light or blurred

images entirely

B Dark background

density

C Blank paper

D Black vertical belts

or stripes

E Cyclical defect F White vertical belts

or streaks

Y103920-3 Service Manual 68

1 Images are light or blurred entirely.

• Is toner low (is the TONER LOW message displayed)?

• Yes Supply toner.

• No Is paper of the specified grade being used?

• No Use paper of the specified grade.

• Yes Is the lens surface of the LED head dirty?

• Yes Clean the lens.

• No Is the LED head being installed properly (check the
HEAD connector of the main control board and PC
connector on the LED head for proper connection)?

• No Install the LED head properly.

• Yes Is the contact plate of the transfer roller in contact with the
contact assembly of the power supply/sensor board prop­erly (see Figure 5-5)?

• No Adjust the contact plate of the transfer roller to make a proper contact with the high
voltage/sensor board and shaft of the transfer roller.

• Yes Are the contact of the developing roller and the contact of the toner supply roller of the image
drum cartrige in contact with the contact assembly properly (see Figure 5-4 A and B )?

• No Adjust the contacts of the developing and toner supply roller to make a proper contact
with the contact assembly.

• Yes Replace the transfer roller.

• Has the problem been solved?

• Yes End

• No Replace the image drum cartridge.

• Has the problem been solved?

• Yes End

Note:

After replacing the image drum cartridge, reset the drum counter (see User's
Manual).

• No Is the tension between the back-up roller (7.52kg) and the surface of back-up roller normal?

• No Replace the back-up roller or bias spring.

• Yes Replace the main control board or high voltage/sensor board.

PC connector

LED head cable

HEAD Main control board

LED head

Y103920-3 Service Manual 69

2 Dark background density

• Has the image drum been exposed to external light?

• Yes Install the image drum in the printer and wait about 30 minutes.

• No Perform the cleaning page function (see Section 4.2.2).

• Has the problem been solved?

• Yes End

• No Is the heat roller of the fusing unit dirty?

• Yes Clean the heat roller.

• No Is the contact of the cleaning roller of the image drum cartridge in contact with the contact
assembly properly (see Figure 5-4 C )?

• No Adjust the contact of the cleaning roller to make a proper contact with the contact
assembly.

• Yes Replace the image drum cartridge.

• Has the problem been solved?

• Yes End

Note:

After replacing the image drum cartridge, reset the drum counter (see User's
Manual).

• No Replace the main control board or high voltage/sensor board.

3 Blank paper is output.

• Is the LED head being connected properly (check the HEAD connector on the main control board and
PC connector on the LED head)?

• No Connect the LED head properly or replace the head cable.

• Yes Is the contact of the image drum cartrige in proper contact with the ground contact properly (see

Figure 5-4 C )?

• No Adjust the ground contact (Drum) of the contact assembly.

• Yes Replace the LED head.

• Has the problem been solved?

• Yes End

• No Replace the main control board or high voltage/sensor board.

Y103920-3 Service Manual 70

4 Black vertical belts or stripes

• Perform the cleaning page function (see Section 4.2.2).

• Has the problem been solved?

• Yes End.

• No Replace the image drum cartridge.

• Has the problem been solved?

• Yes End

Note:

After replacing the image drum cartridge, reset the drum counter (see User's
Manual).

• Clean the LED lens array of the LED head.

• Has the problem been solved?

• Yes End.

• No Replace the LED head.

• Has the problem been solved?

• Yes End

• No Replace the main control board or high voltage/sensor board.

5 Cyclical defect

Notes:

After replacing the image drum cartridge, reset the drum counter (see User's Manual).

Frequency Remedy

Image drum

Developing roller

Toner supply roller

Charging roller

Cleaning roller

Transfer roller

Heat roller

Back-up roller

Replace or clean the image drum cartridge.

Replace the image drum cartridge.

Replace the image drum cartridge.

Replace the image drum cartridge.

Replace the image drum cartridge.

Replace the transfer roller.

Replace the fusing unit assy.

Replace the back-up roller.

3.71" (94.2mm)

1.86" (47.12mm)

2.96" (75.27mm)

1.21" (30.63mm)

0.93" (23.56mm)

1.95" (49.6mm)

2.44" (62.0mm)

2.73" (69.4mm)

Y103920-3 Service Manual 71

6 Prints voids

• Is the contact plate of the transfer roller in proper contact with the high voltage/sensor board (see Figure
5-5)?

• No Adjust the contact plate so that it touches the high voltage/sensor board and the shaft
of the transfer roller properly.

• Yes Replace the transfer roller.

• Has the problem been solved?

• Yes End

• No Is the tension between the back-up roller (7.52kg) and the surface of back-up roller normal?

• No Replace the back-up roller or bias spring.

• Yes Are the contacts of the toner supply roller, developing roller, image drum and charging roller
in proper contact with the contact assy (see Figure 5-4 A , B , C , D , E )?

• No Adjust the contacts so that they touch the contact assy properly.

• Yes Replace the image drum cartridge.

• Has the problem been solved?

• Yes End

Note:

After replacing the image drum cartridge, reset the drum counter (see User's
Manual).

• No Is the LED head being installed properly (check HEAD connector on the main control board
and PC Connector on the LED head)?

• No Install the LED head properly.

• Yes Replace the LED head or the head cable.

• Has the problem been solved?

• Yes End

• No Replace the main control board or high voltage/sensor board.

Y103920-3 Service Manual 72

7 Poor fusing (images are blurred or peels off when the printed characters and im-

ages on the paper are touched by hand)

• Is paper of the specified grade being used?

• No Use paper of the specified grade.

• Yes Is the tension between the back-up roller (7.52kg) and the surface of back-up roller normal?

• No Replace the back-up roller or bias spring.

• Yes Is the connector of the fusing unit assy on the power supply board being connected properly?

• No Connect the fusing unit connector properly.

• Yes Replace the fusing unit assy.

• Has the problem been solved?

• Yes End

• No Replace the main control board or power supply board.

Y103920-3 Service Manual 73

8 White vertical belts or streaks

• Are the LED lens dirty?

• Yes Clean the LED lens.

• No Is the contact plate of the transfer roller in proper contact with the high voltage/sensor board
(see Figure 5-5)?

• No Adjust the contact plate to make a proper contact with the high voltage/sensor board.

• Yes Replace the transfer roller.

• Has the problem been solved?

• Yes End

• No Is the tension between the back-up roller (7.52kg) and the surface of back-up roller normal?

•No Replace the back-up roller or bias spring.

• Yes Is the LED head being installed properly (check HEAD connector on the main control board

and PC connector on the LED head)?

• No Install the LED head properly.

• Yes Replace the LED head.

• Has the problem been solved?

• Yes End

• Yes Replace the image drum cartridge.

• Has the problem been solved?

• Yes End

Note:

After replacing the image drum cartridge, reset the drum counter (see User's
Manual).

• No Replace the main control board or high voltage/sensor board.

Y103920-3 Service Manual 74

Figure 5-4

Contact

s

Charge Roller

Groun

d(

D

rum

)

C

leani

ng Roll

er

Develop

i

ng Roller

Toner Supply Roller

E

D

C

B

A

Y103920-3 Service Manual 75

Figure 5-5

Contact

High voltage/sensor board

Contact plate
for transfer roller

Y103920-3 Service Manual 76

6. WIRING DIAGRAM

6.1 Interconnect Signal Diagram

HVIFPW_1

USB

RM

DM

FA N

USB I/F

CENT

CN1

OPTION

CN2

ENVE

LOPE

2ND

TRAY

ROM-DIMM

ROM DIMM

PW_2

CN1CN2

CN1

*1: Option

HM

TRSBDBCBGND

CH

S5/S6

S7S8S9

S10

S11

*1

*1 *1*1

RAM-DIMM

RAM DIMM

*1

LCDPNL CN

HEAD

THERM

High Voltage Output

Pulse Motor

(Hopping)

Pulse Motor

(Registration)

Pulse Motor

(Main)

FAN

Centronics I/F

Network Board

Network I/F

Multi

Purpose

Feeder

Second

Paper

Feeder

Operator Panel

Assy

LED Head Unit

to Thermister in Fuser Unit

Main Control Board

High Voltage / Sensor Board

Power Supply Board

(Low Voltage)

AC

Input

to Fuser Unit

(supplies AC)

Y103920-3 Service Manual 77

6.2 PCB Layout and Connector Signal List

(1) Main Control Board (GRV-2 PCB)

LED Head

Printer front side

Printer front side

Contact face

Contact face

1– 26

14 – 1

Operator panel

Printer front side

Y103920-3 Service Manual 78

(2) Power Supply Board/High Voltage and Sensor Board

CN2

CN1

CN1

SW2

PS2

PS1

PS3

PS4

PS5

PS6

Y103920-3 Service Manual 79

• HEAD Connector Pin Assignment
(To LED head)

1

3

5

7

9

11

13

15

17

19

21

23

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

C

O

C

C

O

O

O

O

O

O

O

O

O

O

C

O

C

O

C

O

C

O

C

O

Signal Function

SG

HDCLK-P

HDCLK-N

SG

HDLD

HDSTB1

HDDATA3

HDDATA2

HDDATA1

HDDATA0

HDSTB0

HDSTB3

HDSTB2

+3.3V

0VPHD

HEAD

0VPHD

HEAD

0VPHD

HEAD

0VPHD

HEAD

0VPHD

HEAD

Ground for Logic

Clock

Clock

Ground for Logic

Load

Hsync/CSN

Data 3

Data 2

Data 1

Data 0

Strobe/SI

SCLK

SO

+3.3V for Logic

Ground for LED

+5V for LED

Ground for LED

+5V for LED

Ground for LED

+5V for LED

Ground for LED

+5V for LED

Ground for LED

+5V for LED

PIN NO. I/O*

2

4

6

8

10

12

14

16

18

20

22

24

* O: Out

C: Common

Y103920-3 Service Manual 80

• LCDPNL Connector Pin Assignment
(To Operator Panel)

1

3

5

7

9

11

13

1

2

3

4

5

6

7

8

9

10

11

12

13

14

O

O

I

I

O

C

O

O

O

O

O

O

I

I

Signal Function

+5V

LED-P

SW-DATA1

SW-DATA0

LCD_D3

SG

LCD_D2

LCD_D1

LCD_D0

LCD_IRN

LCD_WRN

LCD_E

SW-DATA2

SW-DATA3

+5V

LED ON

Switch Data 1

Switch Data 0

LCD Data 3

Ground

LCD Data 2

LCD Data 1

LCD Data 0

LCD Register Select

LCD Write/Read

LCD Enable

Switch Data 2

Switch Data 3

PIN NO. I/O*

2

4

6

8

10

12

14

* I: In

O: Out
C: Common

• ENVELOPE Connector Pin Assignment
(To Multi Purpose Feeder)

8

7

4

6

1

2

3

4

5

6

7

8

O

O

O

I

C

O

C

O

Signal Function

OPPAP-N

OPSCK-N

OPSD-N

OPSDP-N

OVP

+38V

SG

+5VA

Paper Sensor 1

Clock

Data

OPT send data

Analog Ground

+38V

Logic Ground

+5V

PIN NO. I/O*

5

2

1

3

* I: In

O: Out
C: Common

Y103920-3 Service Manual 81

• 2NDTRAY Connector Pin Assignment
(To 2nd Tray)

8

7

4

6

1

2

3

4

5

6

7

8

O

O

O

I

C

O

C

O

Signal Function

OPPAP-N

OPSCK-N

OPSD-N

OPSDP-N

OVP

+38V

SG

+5VA

Paper Sensor 1

Clock

Data

OPT send data

Analog Ground

+38V

Logic Ground

+5V

PIN NO. I/O*

5

2

1

3

* I: In

O: Out
C: Common

Y103920-3 Service Manual 82

• HVIF Connector Pin Assignment
(To High Voltage Unit/Sensor Board)

1

3

5

7

9

11

13

15

17

19

21

23

25

27

29

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

I

I

I

I

I

C

O

O

O

C

O

C

I

I

I

I

I

I

I

C

O

O

O

O

O

O

C

C

I

I

Signal Function

WRSNS-N

IN1SNS-N

TONER-N

IN2SNS-N

PAPER-N

SG

SBPWN-P

CB2PWN-P

DB1PWM

SG

CB1PWM

SG

TRI_FB

TRV_FB

DB2_V_FB

CHI

CH_V_FB

DB_I

SB_V_FB

SG

CHPWM-P

DB2PWM

TR2PWM-P

TR1PWM-P

+5V

+5V

SG

SG

OUTSNS-N

CVOPN-N

Write Sensor

Paper Sensor 1

Toner Sensor

Paper Sensor 2

Paper Out Sensor

Ground

SB2 Output

CB2 Output

DB1 Output

Ground

Cb1 Output

Ground

TR1 Current Feedback

TR1 Voltage Feedback

DB2 Voltage Feedback

CH Current Feedback

CH Voltage Feedback

DB Current Feedback

SB2 Voltage Feedback

Ground

CH Output Control

DB2 Output

TR2 output

TR1 Output Control

+5V

+5V

Ground

Ground

Out Sensor

Cover Open

PIN NO. I/O*

2

4

6

8

10

12

14

16

18

20

22

24

26

28

30

* I: In

O: Out
C: Common

Y103920-3 Service Manual 83

• PW_1 Connector Pin Assignment
(To Power Supply Unit)

• PW_2 Connector Pin Assignment
(To Power Supply Unit)

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

I

I

C

C

I

I

I

I

Signal Function

+38V

+38V

0VP

0VP

0VPHD

0VPHD

HEAD

HEAD

+38V

+38V

Analog Ground

Analog Ground

Ground for LED

Ground for LED

+5V for LED

+5V for LED

PIN NO. I/O*

* I: In

O: Out
C: Common

1

2

3

4

5

1

2

3

4

5

C

C

I

I

O

Signal Function

SG

SG

+5V

+5V

HEATON_N

Ground for Logic

Ground for Logic

+5V for Logic

+5V for Logic

Heater On

PIN NO. I/O*

* I: In

O: Out
C: Common

• THERM Connector Pin Assignment
(To Thermistor)

1

2

1

2

O

I

Signal Function

+5V

THERM

+5V

Heater

PIN NO. I/O*

* I: In

O: Out

Y103920-3 Service Manual 84

• OPTION Connector Pin Assignment
(To Option Board [Network or RS232C])

*O

I
C

: Out
: In
: Common

Pin No.

01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

I/O*

C
C

O
I/O
I/O
I/O

O

O
I/O
I/O

I
O
O

I/O
I/O

C
C

I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O

I
O

C
C
O

Signal
SG
SG
PPGNT0-N
PPDVSL-N
PPTRDY-N
PPFRM-N
NC
NC
NC
OPSCC_RXD
OPSCC_DSR
PPC_BE3
PPC_BE1
PRINT0-N
PERIWR-N
NICFROM_CS
SDT22
SDT20
SG
SG
SDT18
SDT16
SDT25
SDT27
SDT29
SDT31
SDT9
SDT11
SDT13
SDT15
SDT6
SDT4
SDT2
SDT0
OPNIC-N
RESET-N
NC
SG
SG
+5V

Function
Ground
Ground
Bus Grant (PCI)
Device select (PCI)
Target Ready (PCI)
Frame (PCI)
N.C.
N.C.
N.C.
RXD (RS232C)
DSR (RS232C)
Command/Byte Enable 3 (PCI)
Command/Byte Enable 1 (PCI)
Interrupt (PCI)
FlashROM Write Enable
FlashROM Chip Select
AD Bus 22
AD Bus 20
Ground
Ground
AD Bus 18
AD Bus 16
AD Bus 25
AD Bus 27
AD Bus 29
AD Bus 31
AD Bus 9
AD Bus 11
AD Bus 13
AD Bus 15
AD Bus 6
AD Bus 4
AD Bus 2
AD Bus 0
NIC Detect
Reset
N.C.
Ground
Ground
+5V

Pin No.

41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80

I/O*

C

C
I/O
I/O
I/O
I/O
I/O

I
I

O
I/O
I/O

I

O
I/O
I/O

C

C
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O

I

I
C
C
O
O

Signal
SG
SG
PPPERR-N
PPSERR-N
PPSTOP-N
PPIRDY-N
PPPAR
NC
NC
OPSCC_TXD
OPSCC_DTR
PPCLK0
PPC_BE2
PPC_BE0
PPREQ0-N
PERIRD-N
SDT23
SDT21
SG
SG
SDT19
SDT17
SDT24
SDT26
SDT28
SDT30
SDT8
SDT10
SDT12
SDT14
SDT7
SDT5
SDT6
SDT1
OPNICSW-N
OPSCC-N
SG
SG
+5V
+5V

Function
Ground
Ground
Parity Error (PCI)
System Error (PCI)
Stop (PCI)
Initiator Ready
Parity (PCI)
N.C.
N.C.
TXD (RS232C)
DTR (RS232C)
Clock (PCI)
Command/Byte Enable 2 (PCI)
Command/Byte Enable 0 (PCI)
Bus Request (PCI)
FlashROM Read Enable
AD Bus 23
AD Bus 21
Ground
Ground
AD Bus 19
AD Bus 17
AD Bus 24
AD Bus 26
AD Bus 28
AD Bus 30
AD Bus 8
AD Bus 10
AD Bus 12
AD Bus 14
AD Bus 7
AD Bus 5
AD Bus 3
AD Bus 1
NIC Push Switch
RS232C Detect
Ground
Ground
+5V
+5V

01

03

05

07

09

11

13

15

17

19

21

23

25

27

29

31

33

35

37

39

41

43

45

47

49

51

53

55

57

59

61

63

65

67

69

71

73

75

77

79

42

44

46

48

50

52

54

56

58

60

62

64

66

68

70

72

74

76

78

80

02

04

06

08

10

12

14

16

18

20

22

24

26

28

30

32

34

36

38

40

• FAN Connector Pin Assignment
(To Fan)

1

2

3

1

2

3

O

C

I

Signal Function

FANPOW

SG

FANALM-P

Power Supply for Fan driving

Ground

Fan Alarm

PIN NO. I/O*

* I: In

O: Out
C: Common

Y103920-3 Service Manual 85

• USB Connector Pin Assignment
(USB I/F)

1 3

2 4

1

2

3

4

I

I/O

I/O

C

Signal Description

VCC

D-

D+

SG

VCC

D-

D+

Ground

PIN NO. I/O*

* I: In

O: Out
C: Common

• CENT Connector Pin Assignment
(IEEE1284 I/F)

*O

I
C

: Out
: In
: Common

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

Pin No.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

I/O*

I

C

C

C

C

C

C

C

C

O

O

O

O

I

C

C

O

Signal

STB-N

DATA0-P

DATA1-P

DATA2-P

DATA3-P

DATA4-P

DATA5-P

DATA6-P

DATA7-P

ACK-N

BUSY-P

PE-P

SEL-P

AUTOFEED-N

NC

SG

FG

5VA

Function

Strobe

Data0

Data1

Data2

Data3

Data4

Data5

Data6

Data7

Acknowledge

Busy

Paper End

Select

Auto Feed

N.C.

Logic Ground

Frame Ground

+5V

Pin No.

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

I/O*

C

C

C

C

C

C

C

C

C

C

C

C

I

O

C

O

I

Signal

SG

SG

SG

SG

SG

SG

SG

SG

SG

SG

SG

SG

IPRIM-N

FAULT-N

SG

NC

HILEVEL

SELIN-N

Function

Logic Ground

Logic Ground

Logic Ground

Logic Ground

Logic Ground

Logic Ground

Logic Ground

Logic Ground

Logic Ground

Logic Ground

Logic Ground

Logic Ground

Iprime

Fault

Logic Ground

N.C.

High Level

Select In

Y103920-3 Service Manual 86

1

2

3

4

1

2

3

4

O

O

O

O

Signal Function

HMPH1-P

HMPH1-N

HMPH2-P

HMPH2-N

Coil 1-P

Coil 1-N

Coil 2-P

Coil 2-N

PIN NO. I/O*

* O: Out

• HM Connector Pin Assignment
(To Hopping Motor)

1

2

3

4

1

2

3

4

O

O

O

O

Signal Function

RMPH1-P

RMPH1-N

RMPH2-P

RMPH2-N

Coil 1-P

Coil 1-N

Coil 2-P

Coil 2-N

PIN NO. I/O*

* O: Out

• RM Connector Pin Assignment
(To Resistration Motor)

• DM Connector Pin Assignment
(To Main Motor)

1

2

3

4

1

2

3

4

O

O

O

O

Signal Function

DMPH1-P

DMPH1-N

DMPH2-P

DMPH2-N

Coil 1-P

Coil 1-N

Coil 2-P

Coil 2-N

PIN NO. I/O*

* O: Out

Y103920-3 Service Manual 87

• ROM_DIMM Connector Pin Assignment

*O

I
C

: Out
: In
: Common

Pin No.

01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

I/O*

C

O

C
C

I/O
I/O
I/O
I/O
I/O
I/O

C
C

I/O

O
I/O
I/O
I/O
I/O
I/O
I/O

Signal
SG
NC
NC
NC
NC
NC
NC
NC
NC
+3.3V
NC
NC
NC
NC
SG
SG
NC
NC
NC
NC
DBUS11
DBUS4
DBUS3
DBUS12
DBUS10
DBUS5
SG
SG
DBUS2
+3.3V
DBUS9
DBUS13
DBUS1
DBUS6
DBUS8
DBUS14

Function
Ground
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
+3.3V
N.C.
N.C.
N.C.
N.C.
Ground
Ground
N.C.
N.C.
N.C.
N.C.
Data Bus 11
Data Bus 4
Data Bus 3
Data Bus 12
Data Bus 10
Data Bus 5
Ground
Ground
Data Bus 2
+3.3v
Data Bus 9
Data Bus 13
Data Bus 1
Data Bus 6
Data Bus 8
Data Bus 14

01

03

05

07

09

11

13

15

17

19

21

23

25

27

29

31

33

35

02

04

06

08

10

12

14

16

18

20

22

24

26

28

30

32

34

36

Pin No.

37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72

I/O*

I/O
I/O

C
C

O

I/O

O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
C

Signal
DBUS0
DBUS7
SG
SG
WBEN0
DBUS15
CPU_CS3-N
CPU_OE-N
ABUS14
CPU_CS2-N
ABUS15
ABUS30
ABUS16
ABUS29
ABUS17
ABUS28
ABUS18
ABUS27
ABUS19
ABUS26
ABUS20
ABUS25
ABUS21
ABUS24
+3.3V
ABUS23
ABUS22
ABUS13
ABUS11
ABUS12
ABUS10
ABUS9
ABUS8
ABUS7
RESET-N
SG

Function
Data Bus 0
Data Bus 7
Ground
Ground
Write Enable
Data Bus 15
Chip select 3
Output Enable
Address Bus 14
Chip select 2
Address Bus 15
Address Bus 30
Address Bus 16
Address Bus 29
Address Bus 17
Address Bus 28
Address Bus 18
Address Bus 27
Address Bus 19
Address Bus 26
Address Bus 20
Address Bus 25
Address Bus 21
Address Bus 24
+3.3v
Address Bus 23
Address Bus 22
Address Bus 13
Address Bus 11
Address Bus 12
Address Bus 10
Address Bus 9
Address Bus 8
Address Bus 7
Reset
Ground

37

39

41

43

45

47

49

51

53

55

57

59

61

63

65

67

69

71

38

40

42

44

46

48

50

52

54

56

58

60

62

64

66

68

70

72

Y103920-3 Service Manual 88

• RAM_DIMM Connector Pin Assignment

*O

I
C

: Out
: In
: Common

Pin No.

01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36

I/O*

C

O

C
C

O

O
O
O
C
C
O
O
O
O
O
O
O
O

Signal
SG
NC
NC
NC
NC
NC
NC
NC
NC
+3.3V
NC
NC
NC
NC
SG
SG
NC
NC
PERIRD-N
NC
NC

RAM_CS2-N

NC
SAD3
RAM_CLK1
SAD2
SG
SG
SAD4
+3.3V
SAD5
SAD1
SAD6
SAD0
SAD7
SAD10

Function
Ground
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
+3.3V
N.C.
N.C.
N.C.
N.C.
Ground
Ground
N.C.
N.C.
N.C.
N.C.
N.C.
Chip select 2
N.C.
Address Bus 3
Clock
Address Bus 2
Ground
Ground
Address Bus 4
+3.3v
Address Bus 5
Address Bus 1
Address Bus 6
Address Bus 0
Address Bus 7
Address Bus 10

01

03

05

07

09

11

13

15

17

19

21

23

25

27

29

31

33

35

02

04

06

08

10

12

14

16

18

20

22

24

26

28

30

32

34

36

Pin No.

37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72

I/O*

O
O
C
C
O
O
O
O

O
O
C
O
O
O
O

I/O

O
I/O
I/O
I/O
I/O
I/O
I/O

O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O

I

C

Signal
SAD8
SAD13
SG
SG
SAD9
SAD12
SAD11
RAM_CS1-N
PERIWR-N
RAM_RAS-N
RAM_CKE-N
SG
RAM_CLK1
RAM_CAS-N
RAM_DQM1
RAM_WE-N
SDT8
RAM_DQM0
SDT9
SDT7
SDT10
SDT6
SDT11
SDT5
+3.3V
SDT4
SDT12
SDT3
SDT13
SDT2
SDT14
SDT1
SDT15
SDT0
OPRAM-N
SG

Function
Address Bus 8
Address Bus 13
Ground
Ground
Address Bus 9
Address Bus 12
Address Bus 11
Chip select 1
Address Bus 14
Row Address
Clock Enable
Ground
Clock

Column Address Strobe

Byte Enable 1
Write Enable
Data Bus 8
Write Enable 0
Data Bus 9
Data Bus 7
Data Bus 10
Data Bus 6
Data Bus 11
Data Bus 5
+3.3v
Data Bus 4
Data Bus 12
Data Bus 3
Data Bus 13
Data Bus 2
Data Bus 14
Data Bus 1
Data Bus 15
Data Bus 0
RAM-DIMM Detect
Ground

37

39

41

43

45

47

49

51

53

55

57

59

61

63

65

67

69

71

38

40

42

44

46

48

50

52

54

56

58

60

62

64

66

68

70

72

Y103920-3 Service Manual 89

6.3 Resistance Check

Orange

Yellow

Brown

Black

M

1

2

3

4

Orange

Yellow

Brown

Black

M

1

2

3

4

Unit

Registration motor

Main/drum motor

Hopping motor

Circuit Diagram Illustration Resistance

Between Pins 1 and 2: 7.9

Ω

Between Pins 3 and 4: 7.9ΩBetween Pins 1 and 2: 8.6

Ω

Between Pins 3 and 4: 8.6ΩBetween Pins 1 and 2: 10.3

Ω

Between Pins 3 and 4: 10.3

Ω

Orange

Yellow

Brown

Black

M

1

2

3

4

Yellow

White

White

Y103920-3 Service Manual 90

Unit

Fusing unit

Fan

Circuit Diagram Illustration Resistance

Red

Black

+30 V

1

FANALM-N

3

0 V

2

M

1

2

3

4

Thermostat

Heater

Thermistor

Between Pins 1 and 2: 120V 2

Ω

240V 7

Ω

Between Pins 3 and 4: 200KΩ(at room temperature)

1

2

3

4

Y103920-3 Service Manual 91

APPENDIX A RS-232C SERIAL INTERFACE (option)

1) Connector

• Printer side : 25-pin receptacle
Type DB-25S (made by Canon) or equivalent

• Cable side : 25-pin plug
Type DB-25S (made by Canon)
Shell
Type DB-C8-J10-F2-1 (made by Nihon Kouku Denshi) or equivalent

Note:

Plug shall be fixable with a lock screw.

2) Cable

• Cable length : 6 ft (1.8 m) max. (cable shall be shielded)

Note:

Cable is not provided.

3) Interface signal

Pin No. Signal name Abbreviation Signal direction Functions

1 Frame Ground FG Frame Ground

2 Transmitted Data TD PR Transmitted Data

3 Received Data RD PR Received Data

4 Request to Send RTS PR Stay space level

5 - (Not connected)

6 - (Not connected)

18 - (Not connected)

7 Signal Ground SG Signal Ground

9

- (Not connected)

17

19 - (Not connected)

20 Data Terminal Ready DTR PR Data terminal ready

21

25

- (Not connected)

~~

• Connector pin arrangement

When the Ready/Busy protocol is used for the buffer busy control method, the busy signal can be
set to Pin-20 (DTR) in the menu.

13

25

1

(View from the cable side)

14

Y103920-3 Service Manual 92

4) Signal Level

• MARK polarity : -3V to -15V (LOGIC = 1)

• SPACE polarity : +3V to +15V (LOGIC = 0)

5) Interface Circuit

a) Receiving Circuit

14C232 or equivalent

INPUT

OUTPUT

+3V

-3V

+9V

-9V

OUTPUT

45 ns 55 ns

14C232 or equivalent

INPUT

OUTPUT

+3V

-3V

INPUT

+12V

-12V

b) Sending Circuit

Note:

The signal levels described above is for the case where 3K ý x 15pF is connected to the
terminal.

6) Receive Margin

37% min. at all reception rates.

7) Communications Protocol

a) READY/BUSY protocol
b) X-ON/X-OFF protocol

Y103920-3 Service Manual 93

"RS232C MENU" is displayed on the LCD.

Press the SELECT key.

Ready

Ready

RS232C
MENU

FLOW CTL

Ready

ON-LINE
XXX

Item Flow CTL

Contents of Display Function

DTR HI
DTR LO
XONXOFF
RbstXON

SPACE-READY
MARK-READY

Sending at intervals of 1 sec.

Factory Setting: DTR HI

Press MENU key several times.

Press ITEM key to display the item on the LCD to set up.

Press VALUE key to display the value on the LCD to set up.

Press SELECT key, and display "*" mark on the right side of the value:

By pressing the ON LINE key, menu setting mode is completed and the printer returns to on­line state.

Press the MENU key 9 times.

XXX : PCL, AUTO, PSE*, HEX DUMP, PRR or FX

* PSE means POSTSCRIPT 3 EMULATION.

Press the ITEM + key.

Ready

RS232C

Item RS232C I/F

Contents of Display Function

ENABLE
DISABLE

ENABLE
DISABLE

Factory Setting: ENABLE

Press the ITEM + key.

8) Interface Parameter Setting

Y103920-3 Service Manual 94

Ready

Press the ITEM + key.

Ready

Press the ITEM + key.

Item Bit Length

Contents of Display Function

8 BITS
7 BITS

Factory Setting: 8 bit

8 bits
7 bits

Item Parity

Contents of Display Function

NONE

EVEN

ODD

Factory Setting: NONE

No parity

Even parity

Odd parity

DATABITS

PARITY

Ready

Press the ITEM + key.

Item Minimum BUSY Time

Contents of Display Function

200 m SEC
1 SEC

Factory Setting: 200 m SEC

200 ms
1 sec (1000 ms)

(PCL only)

MIN. BUSY

Ready

Item Baud Rate

Contents of Display Function

300

600
1200
2400
4800
9600

19200
38400
57600
76800

115200

Factory Setting: 9600 baud

300 baud

600 baud
1200 baud
2400 baud
4800 baud
9600 baud

19200 baud
38400 baud
57600 baud
76800 baud

115200 baud

BAUDRATE

Y103920-3 Service Manual 95

Ready

Press the ON LINE key.

Setting completed.

ON-LINE
XXX

XXX : PCL, AUTO, PSE, HEX DUMP, PRR or FX

Ready

OFF REC

Item RS232C I/F OFF-LINE RECEIVE

Contents of Display Function

ENABLE
DISABLE

ENABLE
DISABLE

Factory Setting: ENABLE

Press the ITEM + key.

Y103920-3 Service Manual 96

APPENDIX B CENTRONICS PARALLEL INTERFACE

1) Connector

• Printer side : 36-pin receptacle
(single port) Type 57RE-40360-730B-D29A (made by Daiichi Denshi), CN­AX05841A36AT (made by Ougat) or equivalent

• Cable side : 36-pin plug
Type 57-30360 (made by Daiichi Denshi) or equivalent
Plug-552274-1 (AMP), 552073-1 (AMP) or equivalent

2) Cable

• Cable length : 6 ft (1.8 m) max.

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

Note:

Cable is not supplied with the printer.

Y103920-3 Service Manual 97

• Connector pin arrangement

Pin No. Signal name Signal direction Functions

1

2

3

4

5

6

7

8

9

11

12

13

14

15

16

18

19

30

31

32

33

34

35

36

DATA STROBE

DATA BIT - 1

DATA BIT - 2

DATA BIT - 3

DATA BIT - 4

DATA BIT - 5

DATA BIT - 6

DATA BIT - 7

DATA BIT - 8

BUSY

PAPER END

SELECT

AUTOFEED

-

0V

+5V

0V

INPUT PRIME

FAULT

-

-

-

SELECT IN

10

PR

PR

PR

PR

PR

PR

PR

PR

PR

PR

Parallel data sampling strobe

PR Parallel input and output data

During print processing or alarm

End of paper

Select state (ON-LINE)

Request to change mode

(Not used)

Signal ground

50 mA max.

Signal ground

Initializing signal

End of paper or during alarm

Signal ground

(Not used)

High level (3.3 kΩ)

Request to change mode

ACKNOWLEDGE PR

Completion of data input or end of a
function

17

CHASSIS
GROUND

Chassis ground

:
:

3) Table of Parallel I/F Signals

Y103920-3 Service Manual 98

4) Signal Level

• INPUT

Low : 0 V to +0.4 V
High : +2.4 V to 5.0 V

• OUTPUT

Low : 0 V to +0.4 V
High : +2.0 V to 5.0 V

5) Specifications

Item Description
Mode
Data bit length
Input prime
Receive buffer
Control

Compatibility mode, Nibble mode, ECP mode
8 bits (in the compatibility mode)
Valid/Invalid

0.1M, 0.2M, 0.5M Bytes
Handshaking control is performed in each mode.

Data received from the host is stored in the receive buffer.
Busy control is performed.
Signal lead control is performed.

6) Interface circuit
a) Receiving circuit

LVC161284

b) Sending circuit

LVC161284

c) Other

+5V

35Pin

7) Timing charts
a) Power-ON (Menu Setting: PARALLEL=ENABLE)

Power OFF Initializing H/W Initializing F/W Idle

Power ON

Notice of Transition to On-line

H
L

H
L

H
L

H
L

H
L

Printer
Status

PError

nAck

Busy

nFault

Select

Printer
Status

Power OFF Initializing H/W Initializing F/W DISABLE

Power ON

PError

H
L

nAck

H
L

Busy

H
L

nFault

H
L

Select

H
L

nStrobe

H
L

Busy

NARROW MEDIUM WIDE

H
L

nAck

T(ACK)

Menu Setting

(Ack Width)

T(ACK ) 0.5µs 1.0µs 3.0µs

H
L

b) Power-ON (Menu Setting: PARALLEL=DISABLE)

c) Data Reception (Menu Setting: Ack/Busy Timing=Ack in Busy)

Y103920-3 Service Manual 99

d) Data Reception (Menu Setting: Ack/Busy Timing=Ack while Busy)

nStrobe

H
L

Busy

H
L

nAck

T(ACK)/2 T(ACK)/2

H
L

Printer
Status

Idle Clearing Send/Receive Buffer Canceling Job Idle

I/F Initialization

nInit

H
L

Busy

3 MICRON SEC

H
L

T(INIT)

Menu Setting

(I-PRIME)

T(INIT ) 2.0µs

50 MICRON SEC

33.3µs

Idle Off-line On-line

Notice of Transition to Off-line

Notice of Transition to On-line

H
L

H
L

H
L

H
L

Printer
Status

Busy

PError

nFault

Select

* The T (ACK) values are the same as those shown in the section c).

e) I-Prime (Not at menu-set I-PRIME=DISABLE)

f) Off-line

Y103920-3 Service Manual 100