Okidata OL610e-S Service Manual
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OL600e/610e/610e-PS/OL610e-S
Service Manual
All specifications are subject to change without notice.
P/N 59271602
Disclaimer
This document may not be reproduced without the written permission of Okidata Training and
Publications. Every effort has been made to ensure the accuracy of the information ocntained in this
training course. Okidata is not responsible for errors beyond its control.
Copyright / About Information
1996 by Okidata. All rights reserved.
First Release P/N 59271601 November, 1995
Second Release P/N 59271602 September, 1996
Written by:
OKI Data Corporation
11-22, Shibaura 4-chome, Minato-ku, Tokyo 108, Japan
Tel: +81 (Japan)-3 (Tokyo)-5445-6159 Fax: +81-3-5445-6188
Revised by Okidata Training and Publications
Contact
Please address any comments on this publication to:
OKIDATA
Training and Publications
532 Fellowship Road
Mount Laurel, NJ 08054-3499
Okilink Login Name: Technical Training
Internet Web Site: okidata.com
Copyright Listing
OKIDATA is a registered trademark of Oki America, Inc.
OKIDATA est une marque déposée de Oki America, Inc.
Adobe and PostScript are trademarks of Adobe Systems Incorporated, which may be registered in certain
jurisdictions.
Centronics is a registered trademark of Centronics Data Corporation.
HP and LaserJet are registered trademarks of Hewlett-Packard Company.
LocalTalk is a registered trademark of Apple Computer Inc.
Contents
1. CONFIGURATION.....................................................................................................1 - 1
1.1 System Configuration ........................................................................................1 - 1
1.2 Printer Configuration......................................................................................... 1 - 3
1.3 Optional Configuration......................................................................................1 - 4
1.4 Specifications.....................................................................................................1 - 6
1.5 Safety Standards ................................................................................................1 - 8
1.5.1 Certification Label ................................................................................ 1 - 8
1.5.2 Warning Labels .....................................................................................1 - 9
1.5.3 Warning/Caution Markings.................................................................1 - 10
2. OPERATION DESCRIPTION...................................................................................2 - 1
OL600e Block Diagram (Figure 2-1) ................................................... 2 - 2
OL610e Block Diagram (Figure 2-2) ................................................... 2 - 3
OL610e/PS Block Diagram (Figure 2-3).............................................. 2 - 4
OL610e/S Block Diagram ....................................................................2 - 5
2.1 Control Board ....................................................................................................2 - 6
Single Chip CPU...................................................................................2 - 6
Program and Font ROM........................................................................ 2 - 6
OL600e/610e .........................................................................................2 - 6
OL610e/PS.............................................................................................2 - 6
DRAM ..................................................................................................2 - 7
OL600e/610e .........................................................................................2 - 7
OL610e/PS.............................................................................................2 - 7
EEPROM ..............................................................................................2 - 7
Parallel Interface ...................................................................................2 - 7
2.2 PS Board (OL610e/PS)......................................................................................2 - 9
Program & Font ROMs.........................................................................2 - 9
DRAM ..................................................................................................2 - 9
EEPROM ..............................................................................................2 - 9
LocalTalk Interface ............................................................................... 2 - 9
2.3 Power Supply Board........................................................................................ 2 - 10
Low Voltage Power Supply Circuit.....................................................2 - 10
High Voltage Power Supply Circuit.................................................... 2 - 10
Photosensor......................................................................................... 2 - 10
Sensor Layout Diagram .......................................................................2 - 11
Sensor Functions and Sensing States...................................................2 - 11
2.4 Electrophotographic Process ........................................................................... 2 - 12
2.4.1 Electrophotographic Process Mechanism........................................... 2 - 12
Electrophotographic Process Mechanism Layout (Figure 2-6)........... 2 - 13
2.4.2 Electrophotographic Process...............................................................2 - 14
Electrophotographic Printing Process Timing Chart (Figure 2-8)...... 2 - 14
Electrophotographic Printing Process Diagram (Figure 2-7) .............2 - 15
Table of Contents i OL600e/610e/610e-PS/610e-S
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2.4.3 Process Operation Descriptions ..........................................................2 - 16
Hopping and Feeding...........................................................................2 - 16
Hopping .........................................................................................2 - 17
Feeding .......................................................................................... 2 - 17
Charging ........................................................................................ 2 - 19
Exposure ........................................................................................ 2 - 20
Developing.....................................................................................2 - 22
Transfer..........................................................................................2 - 24
Fusing ............................................................................................ 2 - 25
Cleaning.........................................................................................2 - 26
Cleaning of Rollers........................................................................ 2 - 26
2.5 Paper Jam Detection ........................................................................................ 2 - 27
Paper Feed Timing Chart .................................................................................2 - 28
Paper Feed Check List..................................................................................... 2 - 29
Paper Length List.............................................................................................2 - 29
2.6 Cover Open...................................................................................................... 2 - 31
2.7 Toner Low Detection ....................................................................................... 2 - 32
Device ................................................................................................. 2 - 32
Toner Low............................................................................................2 - 32
Operation ............................................................................................2 - 32
Toner Full ............................................................................................ 2 - 32
TONER FULL State............................................................................ 2 - 33
TONER LOW State............................................................................. 2 - 33
3. PARTS REPLACEMENT...........................................................................................3 - 1
3.1 Precautions for Parts Replacement ....................................................................3 - 1
Service Tools .....................................................................................................3 - 2
3.2 Parts Layout....................................................................................................... 3 - 3
Lower Base Unit................................................................................................ 3 - 3
Upper Cover Unit .............................................................................................. 3 - 4
Base Unit ........................................................................................................... 3 - 5
3.3 How to Change Parts ......................................................................................... 3 - 6
3.3.1 Upper Cover..........................................................................................3 - 7
3.3.2 Stacker ..................................................................................................3 - 8
3.3.3 LED Head .............................................................................................3 - 9
3.3.4 Eject Roller Assembly ........................................................................ 3 - 10
3.3.5 Pulse Motor (Main).............................................................................3 - 11
3.3.6 Pulse Motor (Registration)..................................................................3 - 12
3.3.7 Lower Base Unit ................................................................................. 3 - 13
3.3.8 Motor Assembly..................................................................................3 - 14
3.3.9 Hopping Roller Assembly................................................................... 3 - 15
3.3.10 Stacker Cover Assembly ..................................................................... 3 - 16
3.3.11 Registration Roller.............................................................................. 3 - 17
3.3.12 Transfer Roller.................................................................................... 3 - 18
3.3.13 Fusing Unit Assembly.........................................................................3 - 19
3.3.14 Fusing Pressure Roller ........................................................................3 - 20
3.3.15 Sensor Plate (Inlet).............................................................................. 3 - 21
3.3.16 Toner Sensor (Adhesion) .................................................................... 3 - 22
Table of Contents ii OL600e/610e/610e-PS/610e-S
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3.3.17 Sensor Plate (Outlet)........................................................................... 3 - 23
3.3.18 Manual Feed Guide Assembly ............................................................ 3 - 24
3.3.19 Sensor Plate (Paper Supply) ...............................................................3 - 25
3.3.20 Main Control Board ............................................................................3 - 26
3.3.21 Power Supply Board and Contact Assembly ...................................... 3 - 27
3.3.22 Transformer.........................................................................................3 - 28
3.3.23 Cassette Guide L................................................................................. 3 - 29
3.3.24 Cassette Guide R.................................................................................3 - 30
4. ADJUSTMENT............................................................................................................ 4 - 1
4.1 Maintenance Menus and Functions ................................................................... 4 - 1
4.1.1 User Maintenance Menu—OL610e/PS ................................................4 - 1
4.1.2 System Maintenance Menu—OL610e/PS ............................................4 - 1
4.1.3 Engine Maintenance Menu—OL610e/PS ............................................4 - 2
4.1.4. DOS Operator Panel—OL600e, OL610e ............................................. 4 - 2
Settings Tab ...........................................................................................4 - 2
Service Tab ............................................................................................ 4 - 2
4.2 Adjustment When Replacing a Part................................................................... 4 - 3
4.2.1 Setting of LED Head Drive Time ......................................................... 4 - 3
Luminous Intensity Marking Label ....................................................... 4 - 3
Setting of LED Head Drive Time .......................................................... 4 - 4
Table of Lumious Intensity Marking and Drive Time Parameter ..........4 - 4
Setting.................................................................................................... 4 - 5
OL610e/PS.......................................................................................4 - 5
OL600e, OL610e .............................................................................4 - 5
5. PERIODICAL MAINTENANCE ..............................................................................5 - 1
5.1 Periodical Replacement Parts ............................................................................ 5 - 1
5.2 Cleaning.............................................................................................................5 - 1
5.2.1 Cleaning the LED Lens Array .............................................................. 5 - 1
5.3 Lubrication.........................................................................................................5 - 3
5.3.1 General Information..............................................................................5 - 3
6. TROUBLESHOOTING PROCEDURES.................................................................. 6 - 1
6.1 Troubleshooting Tips .........................................................................................6 - 1
6.2 Points to Check before Correcting Image Problems ......................................... 6 - 1
6.3 Tips for Correcting Image Problems .................................................................6 - 1
6.5 Troubleshooting Flow........................................................................................ 6 - 2
6.4 Preparation for Troubleshooting........................................................................ 6 - 2
6.5.1 Status Message/Trouble List................................................................. 6 - 3
6.5.2 Message Troubleshooting ...................................................................6 - 17
6.5.3 Image Troubleshooting ....................................................................... 6 - 28
Diagram: Contact Points of Contact Assembly ..................................6 - 37
Diagram: Contact Plate for Transfer Roller to Power Supply ............ 6 - 37
7. WIRING DIAGRAM ................................................................................................. 7 - 1
7.1 Interconnect Signal Diagram .............................................................................7 - 1
7.2 PCB Layout and Connector Signal List ............................................................ 7 - 2
7.3 Resistance Check............................................................................................. 7 - 13
7.4 Short Plug Setting............................................................................................ 7 - 15
Table of Contents iii OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
8. PARTS LIST ................................................................................................................ 8 - 1
8.1 General Information .......................................................................................... 8 - 1
Table 8-1 Lower Base Unit........................................................................................... 8 - 2
Table 8-2 Upper Cover Unit .........................................................................................8 - 4
Table 8-3 Base Unit ......................................................................................................8 - 6
APPENDIX A: CENTRONICS PARALLEL INTERFACE.............................................. A - 1
APPENDIX B: LOCALTALK (RS422) SERIAL INTERFACE (OL610E/PS ONLY) ... B - 1
APPENDIX C: SOFTWARE DIAGNOSTICS AND ADJUSTMENTS ........................... C - 1
C.1. Maintenance Menus—OL610e/PS ................................................................... C - 1
C.1.1 User Maintenance Menu...................................................................... C - 2
Diagram of User Maintenance Mode ................................................... C - 3
C.1.2 System Maintenance Menu.................................................................. C - 4
Diagram of System Maintenance Menu (Figure. C-1) ......................... C - 5
C.1.3 Engine Maintenance Menu .................................................................. C - 6
Diagram of Engine Maintenance Menu (Figure C-2) .......................... C - 7
C.1.4 Factory User Setting Operation ........................................................... C - 8
C.2. DOS Software Operating Panel—OL600e & OL610e..................................... C - 9
C.2.1 Settings Tab.......................................................................................... C - 9
C.2.2 Service Tab......................................................................................... C - 10
APPENDIX D: MULTI-PURPOSE FEEDER....................................................................D - 1
D.1. PREFACE ......................................................................................................... D - 1
D.1.1 Functions.............................................................................................. D - 2
D.1.2 External View and Component Names ................................................ D - 2
D.2. MECHANISM DESCRIPTION....................................................................... D - 3
D.2.1 General Mechanism ............................................................................. D - 3
D.2.2 Hopper Mechanism.............................................................................. D - 3
D.3. PARTS REPLACEMENT ................................................................................ D - 4
D.3.1 Precautions Concerning Parts Replacement ........................................ D - 4
D.3.2 Parts Layout ......................................................................................... D - 6
D.3.3 Parts Replacement Methods................................................................. D - 7
Link....................................................................................................... D - 8
Separator............................................................................................... D - 9
OLEV-11 PCB .................................................................................... D - 10
Pulse Motor......................................................................................... D - 11
Planet Gear ......................................................................................... D - 12
Roller-A and -B .................................................................................. D - 13
D.4. TROUBLESHOOTING.................................................................................. D - 14
D.4.1 Precautions Prior to Troubleshooting ................................................ D - 14
D.4.2 Preparations for Troubleshooting....................................................... D - 14
D.4.3 Troubleshooting Method.................................................................... D - 16
Status Message List ............................................................................ D - 16
D.5. CONNECTION DIAGRAM .......................................................................... D - 18
D.5.1 Interconnection Diagram ................................................................... D - 18
D.5.2 PCB Layout........................................................................................ D - 19
D.6. PARTS LIST................................................................................................... D - 20
Table of Contents iv OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
APPENDIX E: SECOND PAPER FEEDER ...................................................................... E - 1
E.1. PREFACE ......................................................................................................... E - 1
E.1.1 Functions.............................................................................................. E - 2
Paper Type ............................................................................................ E - 2
Weight................................................................................................... E - 2
E.1.2 External View and Component Names ................................................ E - 3
E.2. MECHANISM DESCRIPTION ....................................................................... E - 4
E.2.1 General Mechanism ............................................................................. E - 4
E.2.2 Hopper Mechanism .............................................................................. E - 4
E.3. PARTS REPLACEMENT ................................................................................ E - 5
E.3.1 Precautions Concerning Parts Replacement ........................................ E - 5
Service Tools ........................................................................................ E - 6
E.3.2 Parts Layout ......................................................................................... E - 7
E.3.3 Parts Replacement Methods................................................................. E - 8
Pulse Motor (Hopping)......................................................................... E - 9
OLEV-12 PCB .................................................................................... E - 10
Hopping Roller Shaft Assembly and One-way Clutch Gear .............. E - 11
E.4. TROUBLESHOOTING.................................................................................. E - 12
E.4.1 Precautions Prior to Troubleshooting ................................................ E - 12
E.4.2 Preparations for Troubleshooting....................................................... E - 12
E.4.3 Troubleshooting Method.................................................................... E - 14
LCD Status Message List ................................................................... E - 14
E.5. CONNECTION DIAGRAM .......................................................................... E - 16
E.5.1 Interconnection Diagram ................................................................... E - 16
E.5.2 PCB Layout........................................................................................ E - 17
E.6. PARTS LIST................................................................................................... E - 18
Table of Contents v OL600e/610e/610e-PS/610e-S
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Table of Contents vi OL600e/610e/610e-PS/610e-S
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1. CONFIGURATION
1.1 System Configuration
The printer consists of control and engine blocks in the standard configuration shown below.
In addition, the options marked with an asterisk (*) are available.
Operator Panel
(OL610e/PS only)
Paper
Cassette
Engine Unit
* Legal/Universal
Paper Tray
* High-Capacity
Second Paper Feeder
(See Note)
* Multi-Purpose
Feeder
(See Note)
Paper Feed Mechanism
(First Tray Unit)
Electrophotographic
Processing Unit
Main Control PCB
Face
Down
Stacker
Power Supply
and Sensor PCB
OL610e/PS
OL600e/610e
: PS Board with RAM
: *RAM Board
* : Optional
Figure 1-1
Configuration 1 - 1 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
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Configuration 1 - 2 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
1.2 Printer Configuration
The printer unit consists of the following hardware components:
• Electrophotographic Processor
• Paper Feeder
• Main Control PCB
• Operator Panel (OL610e/PS and OL610e/S)
• Power Supply Unit
• PS Board (OL610e/PS)
The printer unit configuration is shown in Figure 1-2.
Operator panel assy
(OL610e/PS)
Fusing unit
PS Board (OL610e/PS)
Upper cover
Toner cartridge
(consumables)
Stacker cover assy
Image drum unit
(consumable)
Main Control PCB
• LQ5C: OL600e
• LQ6C: OL610e and
OL610e/PS
Power supply board
Figure 1-2
Configuration 1 - 3 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
1.3 Optional Configuration
The options shown below are available for use with the printer.
These are available separately from the printer unit.
(1) 1MB Memory Expansion Board (OL600e/610e)
(2) SIMM (Single In-line Memory Module)
(3) Legal/Universal Paper Cassette
Legal/Universal cassette
Cassette cover
Configuration 1 - 4 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
(4) High Capacity Second Paper Feeder
(5) Multi-Purpose Feeder
Configuration 1 - 5 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
1.4 Specifications
(1) Type Desktop
(2) External Dimensions Height 6.3 inches (160 millimeters)
(3) Weight 17 pounds (7.7 kilograms)
(4) Developing Method Dry electrophotography
Exposing Method LED stationary head
(5) Paper Used Type
Width 12.6 inches (320 millimeters)
Depth 14.17 inches (360 millimeters)
• Standard paper
– e.g. Xerox 4200 (20 pound)
• Application paper (manual face-up feed)
– Label
– Envelope
– OHP paper (Transparency)
Size
• Standard sizes
– Letter (ODA)
– Legal (option)
– Executive
– Envelope
– A4
– A5
– B5
– A6
• Applicable sizes
– Width: 3.94 to 8.5 inches
(100 to 216 millimeters)
– Length: 5.83 to 14 inches
(148 to 355.6 millimeters)
Thickness
– Automatic feed: 16 to 24 pound
2
(60 to 90 g/m
)
– Manual feed: Label, OHP paper (transparency)
Envelope
(6) Printing Speed First print: 25 seconds
Continuous print: 6 pages/minute for letter size paper
Warm-up time: 60 seconds
[at room temperature
77 degrees Fahrenheit
(25 degrees Celsius)
and rated voltage (120 VAC)]
Configuration 1 - 6 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
(7) Paper Feeding Method Automatic feed or manual feed
(8) Paper Delivery Method Face down/face up
(9) Resolution OL600e: 300 x 300 dots/inch
OL600e (Hiper-W driver), OL610e, OL610e/PS:
600 x 600 dots/inch
(10)Power Input 120 VAC +5.5%, –15% (ODA)
230 VAC +15%, –15% (ODA)
(11)Power Consumption Peak: Approximately 420W
Typical operation: Approximately 160W
Idle: Approximately 55W
Power save mode: Approximately 15W
(12)Temperature and Humidity During operation: 50 to 90 degrees Fahrenheit
(10 to 32 degrees Celsius)
In storage: 14 to 110 degrees Fahrenheit
(–10 to 43 degrees Celsius)
(13) Noise During Operation: 48 dB (A) or less
Standby: 38 dB (A) or less
(14)Consumables Toner cartridge kit 2,000 pages (5% duty)
Image drum cartridge 20,000 pages (at continuous printing)
15,000 pages (3 pages/job)
10,000 pages (1 page/job)
Configuration 1 - 7 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
1.5 Safety Standards
1.5.1 Certification Label
The safety certification label is affixed to the printer at the location shown below.
Configuration 1 - 8 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
1.5.2 Warning Labels
The warning labels are affixed to the sections that may cause bodily injury.
Follow the instructions on warning labels during maintenance.
Configuration 1 - 9 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
1.5.3 Warning/Caution Markings
The following warning and caution markings appear on the power supply board.
CAUTION
ENGLISH
Heatsink and transformer core present risk of electric shock. Test before touching.
FRENCH
Le dissipateur thermique et le noyau du transformateur présentent des risques de
choc électrique. Testez avant de, manipuler.
SPANISH
Las disipadores de color el núcel del transformador pueden producir un choque
eléctrico. Compruebe antes de tocar.
PORTUGUESE
O dissipador de calor e o núcleo do fransiormador apresentam risco de choque
elétrico. Teste antes de focar.
ENGLISH
Circuits may be live after fuses open.
FRENCH
Il se peut que les circuits soient sous tension une fois que les fusibles ont été 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.
Configuration 1 - 10 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
2. OPERATION DESCRIPTION
The printer consists of a main control board, a PostScript board (OL610e/PS), a power supply/
sensor board, an operator panel (OL610e/PS, OL610e/S), and an electrophotographic process
mechanism.
The control board and the PostScript board receive data via the host interface; these then
decode, edit and store the data in memory. After a single page of data is completely edited,
they reference the font memory and generate bit image data, which is transferred to the LED
head in one-dot line units.
The data is printed on the paper by means of the electrophotographic process mechanism.
The OL600e and OL610e use proprietary software to control printer operations and status
monitoring. The OL610e/PS and the OL610e/S have an operator panel to perform these
functions.
Block diagrams for each printer are on the following pages.
Operation Description 2 - 1 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
1MB Memory Board
(Option)
Charge roller
Transfer roller
Developing
roller
Toner supply
roller
Cleaning
roller
Heater
High voltage
generation
circuit
Heater drive
circuit
LED Head
FAN
Drum Motor
Registration Motor
Thermistor
Resident RAM
256k x 16 DRAM x 2
(1M Bytes)
1 Chip CPU
Reset
circuit
Low voltage
generation circuit
AC
transformer
Toner low sensor
Paper out sensor
Outlet sensor
Paper sensor
Inlet sensor 2
Inlet sensor 1
Cover
open
switch
AC IN
+8V -8V 0V +5V +30V
CH TR DB
HEAT ON
Filter circuit
Centronics
parallel I/F
EEPROM
Power Supply
Board
FAN ALM
FAN Driver
Fusing temperature
control circuit
M
M
Drum motor &
Registration motor
drive circuit
LQ5C-
For optional
RAM board
16 bits
DATA
BUS
Program & Font
ROM
1MB Mask ROM
7407
High Capacity
Second Paper
Feeder (Option)
(Note 1)
Multi-Purpose
Feeder (Option)
(Note 1)
OL600e Block Diagram (Figure 2-1)
Operation Description 2 - 2 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
OL610e Block Diagram (Figure 2-2)
LQ6C-
Program & Font
4MB Mask ROM
EEPROM
Centronics
parallel I/F
ROM
7407
1MB Memory Board
16bit
DATA
BUS
1 Chip CPU
For optional
RAM board
16bit
CH TR DB
HEAT ON
2MB Memory Board
or
Resident RAM
1M x 16 DRAM
(2MB)
Drum motor &
Registration motor
drive circuit
Fusing temperature
control circuit
FAN Driver
(Option)
Max. 4MB
FAN ALM
High Capacity
Second Paper
Feeder (Option)
M
M
Thermistor
FAN
LED Head
Drum Motor
Registration Motor
Multi-Purpose
Feeder (Option)
Reset
circuit
Power Supply
Board
Inlet sensor 1
Inlet sensor 2
Paper sensor
Outlet sensor
Paper out sensor
Toner low sensor
+8V -8V 0V +5V +30V
Low voltage
generation circuit
AC
transformer
Cover
open
switch
High voltage
Heater drive
circuit
Filter circuit
generation
circuit
Charge roller
Transfer roller
Developping
roller
Toner supply
roller
Cleaning
roller
Heater
AC IN
Operation Description 2 - 3 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
PS Board with RAM
LocalTalk I/F (RS422 I/F)
Charge roller
Transfer roller
Developping
roller
Toner supply
roller
Cleaning
roller
Heater
High voltage
generation
circuit
Heater drive
circuit
LED Head
FAN
Drum Motor
Registration Motor
Thermistor
Resident RAM
1 Chip CPU
Reset
circuit
Low voltage
generation circuit
AC
transformer
Toner low sensor
Paper out sensor
Outlet sensor
Paper sensor
Inlet sensor 2
Inlet sensor 1
Cover
open
switch
AC IN
+8V -8V 0V +5V +30V
CH TR DB
HEAT ON
Filter circuit
Centronics
parallel I/F
EEPROM
(1K)
Power Supply
Board
FAN ALM
FAN Driver
Fusing temperature
control circuit
M
M
Drum motor &
Registration motor
drive circuit
LQ6C-
DATA
BUS
Program & Font
ROM
3MB Mask ROM
7407
High Capacity
Second Paper
Feeder (Option)
Multi-Purpose
Feeder (Option)
OL610e/PS Block Diagram (Figure 2-3)
Operation Description 2 - 4 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
OL610e/S Block Diagram
Picture Not Available at Press Time
Operation Description 2 - 5 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
2.1 Control Board
The control board consists of a single chip CPU, Program & Font ROMs—one DRAM for the
OL600e, two DRAMs for the OL610e—an EEPROM, a host interface circuit, and a mechanism
driving circuit.
Single Chip CPU
The single chip CPU is a custom CPU (32-bit internal bus, 16-bit external bus, 25.54 MHz
clock with input frequency from a 12.27 MHz clock) which incorporates the MIPS 3000
RISC CPU and its peripheral devices, and has the following functions:
Built-in Device Function
Chip select controller Control of ROM, DRAM and I/O device
Bus controller
DRAM controller
DMA controller Transfer of image data from DRAM to video output port
Parallel interface controller Control of Centronics parallel interface
Serial interface controller Control of RS-232C serial interface
Video output port Control of LED head
LED STB output port
Timer Generation of various control timing signals
Monitoring of paper running and paper size
Serial I/O port Control of operator panel, EEPROM, and options
I/O port Input and output of sensor and motor signals
Program and Font ROM
OL600e/610e
The Program & Font ROM stores the equipment program and various types of fonts.
EPROM or Mask ROM is used for a Program & Font ROM. The mounting location of this
Program & Font ROM varies depending on the type of ROM (for the mounting location, refer
to Section 7.2).
OL610e/PS
The Program ROM & Font ROM store the HP4 emulation program and various types of fonts.
Mask ROM is used for a Program & Font ROM.
Operation Description 2 - 6 OL600e/610e/610e-PS/610e-S
Service Manual, P/N 59271602
DRAM
OL600e/610e
The DRAM is a resident memory—1MB in the OL600e, 2MB in the OL610e—used as a buffer; it
stores edited data, image data, DLL data, and macro data.
OL610e/PS
The DRAM is resident memory (2MB on the board plus 0.5MB on the PS board) used as a
buffer; it stores edited data, image data, DLL data, and macro data.
In PostScript mode, it is used as VM and font cache also.
EEPROM
1,024-bit Electrically Erasable PROM (EEPROM), is loaded with the following data:
• Menu data
• Various counter data (Page counter, Drum counter)
• Adjusting parameters (LED head drive time, print start position, paper feed length)
Parallel Interface
Parallel data is received from the host system via parallel interface which conforms to the
Centronics specification. IEEE 1284 specification bidirectional parallel is supported.
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2.2 PS Board (OL610e/PS)
The PS Board consists of two Program & Font ROMs, DRAMs, an EEPROM, and a host
interface circuit.
Program & Font ROMs
The Program & Font ROMs store the PostScript Level II program and its fonts. Mask
ROM is used for the Program & Font ROMs.
DRAM
0.5MB of DRAMs reside on the PS board.
EEPROM
4,096 bit-Electrically Erasable PROM (EEPROM) is mounted on the PS board for storing
the PostScript menu settings.
LocalTalk Interface
AppleTalk protocol data is received from the host system via LocalTalk interface. The
block diagram is shown in Figure 2-4.
LocalTalk I/F
(RS422 I/F)
Program & Font
ROM
4MB Mask ROM
SCC
85C30
Figure 2-4 PS Board Block Diagram
LQ6C
Resident RAM
(0.5MB)
EEPROM
(4K)
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2.3 Power Supply Board
The power supply board consists of an AC filter circuit, a low voltage power supply circuit, a
high voltage power supply circuit, heater drive circuit, and photosensors.
Low Voltage Power Supply Circuit
This circuit generates the following voltages.
Output voltage Use
+5 V Logic circuit supply voltage
+30 V Motor and fan drive voltage and source voltage for high-voltage supply
+8 V Analog supply voltage
–8 V PS board and analog circuit supply voltage
High Voltage Power Supply Circuit
This circuit generates following voltages required for electrophotographic process from
+5 V, according to the control sequence from the control board. When cover open state
is detected, +5 V supply is interrupted automatically to stop the supply of all high-voltage
outputs.
Output Voltage Applied To Remarks
CH -1.35 KV Charging Roller
DB -300 V/+300 V Developing Roller
SB -450 V/ 0 V Toner Supply Roller
TR +500 V to +4 KV/-750 V Transfer Roller Variable
CB +400 V Cleaning Roller
Photosensor
The photosensor mounted on this power supply board monitors the paper running state
during printing.
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Sensor Layout Diagram
Toner
sensor
Inlet
sensor 2
Paper sensor
Paper
end sensor
Exit roller
Outlet sensor
Heat roller
Transfer roller
Inlet sensor 1
Resist roller
Hopping
roller
Paper running diretion
Sensor Functions and Sensing States
Sensor Function Sensing State
Inlet Sensor 1 Detects the leading edge of the paper and gives ON: Paper Exists
the supervision timing for switching from OFF: No Paper Exists
hopping operation to feeding operation.
Monitors paper feeding situation and paper size
based on the paper arrival time and running time.
Inlet Sensor 2 Detects the form width. ON: A4 or larger
OFF: Smaller than A4
Paper Sensor Detects the leading portion of the paper. ON: Paper Exists
Monitors the paper feeding situation. OFF: No Paper Exists
Outlet Sensor Monitors the paper feeding and size ON: Paper Exists
according to the time of arrival to and OFF: No Paper Exists
leaving past the sensor.
Paper End Sensor Detects the end of the paper. ON: Paper Exists
OFF: No Paper Exists
Toner Low Sensor Detects the lack of toner.
Operation Description 2 - 11 OL600e/610e/610e-PS/610e-S
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