Oki OKIPAGE 14e User manual

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41605601TH Rev.2 1 / 182
OKIPAGE 14e
LED Page Printer
Service Manual
ODA
Based on: 2001-03-19 Rev.2

41605601TH Rev.2 2 /
Rev.No. Date No.
Corrected items
Page Description of change Person in
charge
Document Revision History
1 2000-12-08 ISSUE ODC Miyashita
2 2001-03-19 NP39 H Ono
3 06-15-2001 ODA Revision ODA Training

41605601TH Rev.2 3 /
PREFACE
This Maintenance Manual describes the field maintenance methods for OKIPAGE 14e LED Page Printers.
This manual is written for use by the maintenance personnel. Please note that you should refer to the
Printer Handbook and Printer Setup for the handling and operating methods of the equipment.

41605601TH Rev.2 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. OPERATION DESCRIPTION............................................................................. 15
2.1 Main Control Board..................................................................................... 17
2.2 Power Supply/Sensor Board....................................................................... 18
2.3 Electrophotographic Process...................................................................... 20
2.3.1 Electrophotographic Process Mechanism ............................................................... 20
2.3.2 Electrophotographic Process................................................................................... 22
2.3.3 Process Operation Descriptions .............................................................................. 25
2.4 Paper Jam Detection .................................................................................. 35
2.5 Cover Open ................................................................................................ 37
2.6 Toner Low Detection ................................................................................... 38
3. PARTS REPLACEMENT.................................................................................... 40
3.1 Precautions for Parts Replacement ............................................................ 40
3.2 Parts Layout................................................................................................ 42
3.3 How to Change Parts.................................................................................. 45
3.3.1 Upper Cover Assy.................................................................................................... 46
3.3.2 IC Card Cover.......................................................................................................... 47
3.3.3 LED Head ................................................................................................................ 48
3.3.4 Operator Panel Assy................................................................................................ 49
3.3.5 Lower Base Unit ...................................................................................................... 50
3.3.6 Pulse Motor (Main/Drum) ........................................................................................ 51
3.3.7 Pulse Motor (Registration)....................................................................................... 52
3.3.8 Face Up Stacker Assy ............................................................................................. 53
3.3.9 Eject Roller Assy...................................................................................................... 54
3.3.10 Motor Assy............................................................................................................... 55
3.3.11 Hopping Roller ShaftAssy....................................................................................... 56
3.3.12 Stacker Cover Assy ................................................................................................. 57
3.3.13 Registration Roller ................................................................................................... 58
3.3.14 Roller Transfer Assy ................................................................................................ 59
3.3.15 Fusing Unit .............................................................................................................. 60
3.3.16 Back-up Roller ......................................................................................................... 61
3.3.17 Sensor Plate (Inlet).................................................................................................. 62
3.3.18 Sensor Plate (Outlet), Sensor Wire Assy................................................................. 63
3.3.19 Manual Feed Guide Assy ........................................................................................ 64
3.3.20 Sensor Plate (Paper Supply) ................................................................................... 65
3.3.21 M7G-PCB ................................................................................................................ 66
3.3.22 Power Supply/Sensor Board, High Voltage Unit and Contact Assy......................... 67
3.3.23 Cassette Guide LAssy ............................................................................................ 68
3.3.24 Cassette Guide R Assy............................................................................................ 69
3.3.25 Spacer Bearing (L/R)............................................................................................... 70
4. ADJUSTMENT ................................................................................................... 71
4.1 Adjustment Types and Functions................................................................ 71
4.1.1 Status Monitor ......................................................................................................... 71

41605601TH Rev.2 5 /
4.1.2 Engine Maintenance Utility ...................................................................................... 71
4.2 Adjustment When Replacing a Part............................................................ 72
4.2.1 Setting of LED Head Drive Time.............................................................................. 72
4.2.2 Uploading and Downloading EEPROM Data .......................................................... 73
5. PERIODICAL MAINTENANCE........................................................................... 74
5.1 Periodical Replacement Parts .................................................................... 74
5.2 Cleaning...................................................................................................... 74
5.2.1 Cleaning of LED Lens Array .................................................................................... 74
6. TROUBLESHOOTING PROCEDURES............................................................. 76
6.1 Troubleshooting Tips................................................................................... 76
6.2 Check Points Before Correcting Image Problems ...................................... 76
6.3 Notes When Correcting Image Problems ................................................... 76
6.4 Preparation Before Troubleshooting ........................................................... 76
6.5 Troubleshooting .......................................................................................... 78
6.5.1 Status Monitor Message List ................................................................................... 78
6.5.2 Status Message Troubleshooting ............................................................................ 82
6.5.3 Image Troubleshooting ............................................................................................ 90
7. WIRING DIAGRAM ........................................................................................... 99
7.1 Interconnect Signal Diagram ...................................................................... 99
7.2 PCB Layout and Connector Signal List .................................................... 100
7.3 Resistance Check......................................................................................110
8. PARTS LIST ......................................................................................................112
Appendix A RS-232C SERIAL INTERFACE (option).........................................119
Appendix B CENTRONICS PARALLEL INTERFACE....................................... 121
Appendix C UNIVERSAL SERIAL BUS (USB).................................................. 125
Appendix D MAINTENANCE UTILITY GUI MANUAL....................................... 129
1. Overview .................................................................................................... 129
1.1 System Requirements ............................................................................................... 129
2. Utility Starting-Time Operation ................................................................... 129
3. Main Set Property Sheet ............................................................................ 130
3.1 Printer Status Group.................................................................................................. 130
3.2 LED Head Marking No............................................................................................... 133
3.3 Descriptions on Buttons............................................................................................. 134
4. Menu Property Sheet................................................................................ 136
4.1 Setting Items.............................................................................................................. 137
5. Local Print Property Sheet ......................................................................... 140
6. Product Set Property Sheet........................................................................ 142
7. About Property Sheet ................................................................................. 143
8. For Invalid Events....................................................................................... 144
8.1 Failed Printer Setting ................................................................................................. 144
8.2 RAM Check Error....................................................................................................... 144
Appendix E MULTI-PURPOSE FEEDER.......................................................... 134
1. OUTLINE.................................................................................................... 145
1.1 Functions ................................................................................................................... 145
1.2 External View and Component Names...................................................................... 145

41605601TH Rev.2 6 /
2. MECHANISM DESCRIPTION.................................................................... 146
2.1 General Mechanism .................................................................................................. 146
2.2 Hopper Mechanism ................................................................................................... 146
3. PARTS REPLACEMENT............................................................................ 147
3.1 Precautions Concerning Parts Replacement............................................................. 147
3.2 Parts Layout .............................................................................................................. 149
3.3 Parts Replacement Methods ..................................................................................... 150
3.3.1 Link................................................................................................................ 151
3.3.2 Separator....................................................................................................... 152
3.3.3 OLEV-11-PCB ............................................................................................... 153
3.3.4 Pulse Motor ................................................................................................... 154
3.3.5 Planet Gear ................................................................................................... 155
3.3.6 Roller-A and B ............................................................................................... 156
4. TROUBLESHOOTING ............................................................................... 157
4.1 Precautions Prior to the Troubleshooting .................................................................. 157
4.2 Preparations for the Troubleshooting ........................................................................ 157
4.3 Troubleshooting Method ............................................................................................ 158
4.3.1 LED Status Message List .............................................................................. 158
5. CONNECTION DIAGRAM ......................................................................... 160
5.1 Interconnection Diagram ........................................................................................... 160
5.2 PCB Layout ............................................................................................................... 160
6. PARTS LIST ............................................................................................... 161
Appendix F HIGH CAPACITY SECOND PAPER FEEDER MAINTENANCE... 163
1. OUTLINE.................................................................................................... 163
1.1 Functions ................................................................................................................... 163
1.2 External View and Component Names...................................................................... 163
2. MECHANISM DESCRIPTION.................................................................... 164
2.1 General Mechanism .................................................................................................. 164
2.2 Hopper Mechanism ................................................................................................... 164
3. PARTS REPLACEMENT............................................................................ 165
3.1 Precautions Concerning Parts Replacement............................................................. 165
3.2 Parts Layout .............................................................................................................. 167
3.3 Parts Replacement Methods ..................................................................................... 168
3.3.1 Stepping Motor (Hopping) ............................................................................. 169
3.3.2 TQSB-2 PCB ................................................................................................. 171
3.3.3 Hopping Roller Shaft Assy and One-way Clutch Gear .................................. 171
4. TROUBLESHOOTING ............................................................................... 172
4.1 Precautions Prior to the Troubleshooting .................................................................. 172
4.2 Preparations for the Troubleshooting ........................................................................ 172
4.3 Troubleshooting Method ............................................................................................ 173
4.3.1 LED Status Message List .............................................................................. 173
5. CONNECTION DIAGRAM ......................................................................... 175
5.1 Interconnection Diagram ........................................................................................... 175
5.2 PCB Layout ............................................................................................................... 175
6. PARTS LIST ............................................................................................... 176

41605601TH Rev.2 7 /
1. CONFIGURATION
1.1 System Configuration
OKIPAGE14econsistsofcontrolandengineblocksinthestandardconfiguration,asshowninFigure
1-1.
In addition, the options marked with asterisk(*) are available.
Figure 1-1
High Voltage Unit
and Sensor Board
Electrophotographic
Processing Unit
Fuser Unit
Paper Feeding Mechanism
(First Tray Unit)
RS-232C Serial*
Interface Board
1 DRAM SIMM Socket
1 Flash SIMM Socket
Main Control Board
Operator Panel
Paper
Cassette
Face
Down
Stacker
Engine Unit
* : Optional
*High Capacity
Second Paper
Feeder
*Multi Purpose
Feeder
Centronics
Face Up
Stacker
or
Flash SIMM*
(Flash memory)
DRAM SIMM*
RS-232C
Expansion Board
1 DRAM SIMM Socket
1 Flash SIMM Socket
USB
Power Supply AC

41605601TH Rev.2 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
Fusing unit
Power supply
Legal/universal paper cassette
High Voltage Unit/sensor board
Main control board
Image drum unit(Type 8)
(consumable)
Toner-cartridge(Type 5)
(consumable)

41605601TH Rev.2 9 /
(3) Expansion Board
1.3 Optional Configuration
The options shown below are available for use with OKIPAGE 14e. These are available separately
from the printer unit.
(1) High Capacity Second Paper Feeder
(2) Multi Purpose Feeder

41605601TH Rev.2 10 /
(4) RS-232C Serial Interface Board
(5) DRAM SIMM Memory
DRAM SIMM memory is available with memory of 8MB,16MB,32MB [Oki Data genuine].
The access time of SIMM memories are 60ns, 70ns, 80ns, and 100ns.
(6) Flash SIMM
Flash SIMM is available with memory of 4MB, 8MB and 16MB.

41605601TH Rev.2 11 /
1.4 Specification
(1) Type Desktop
(2) External dimensions Height 7.9”(200 mm)
Width 13.0”(330 mm)
Depth 15.6”(395 mm)
(3) Weight Approx. 19.85 lbs.
(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-10** [**manual feed and Multi Purpose Feeder
(Option) only]
–Monarch**
–DL**
–C5**
–A4
–A5
–B5 (JIS)
–A6
•Applicable sizes
–Width: 3.4”to 8.5”(86 to 216 mm)
–Length: 5.5”to 14”(140 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 28lbs)
(6) Printing speed Continuous printing: 14 pages per minute with Letter size
paper. [Except Multi purpose Feeder
(10.7ppm)]
Warm-up time: 45secondstypicalatroomtemperature
[68˚F (20˚C), AC 120/230 V].
First page print time: 7.5 seconds typical for the Letter size
paper after warm-up.
(7) Paper feeding method Automatic feed or manual feed
(8) Paper delivery method Face down/face up
(9) Resolution 300 ×300 dots/inch
300 ×1200 dots/inch

41605601TH Rev.2 12 /
(10)Power input 120 V + 6%, – 15%
230 VAC ±10%
(11)Power consumption 120VAC 230VAC
Peak : Approx. 600W Approx. 600W
Typical operation : Approx. 340W Approx. 340W
Idle : Approx. 75W Approx. 66W
Power save mode : Approx. 10W Approx. 11W
(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 difference
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 ODA :2,000 (5% duty)
OEL/INT : 2,500 (5%duty)
Image drum cartridge 20,000 (at continuouts printing)
14,000 (3 page/job) without Power Save
9,000 (1 page/job) without Power Save
8,000 (1 page/job) without Power Save
(Minimum)
10
28
32
Temperature
(
° C)
20 80 Humidity (%)
Operation range

41605601TH Rev.2 13 /
1.5 Safety Standards
1.5.1 Certification Label
The safety certification label is affixed to the printer in the position shown 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.
ODA AC : 120V model ODA AC : 230V model
INT AC : 230V model

41605601TH Rev.2 14 /
1.5.3 Warning/Caution Marking
The following warning and caution markings are made on the power supply/sensor board.
ENGLISH
Heat sink 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
Lasdisipadoresdecolorelnúceldeltransformadorpuedenproducirunchoqueeléctrico.Compruebe
antes de tocar.
PORTUGUESE
Odissipadordecaloreonúcleodofransiormadorapresentamriscodechoqueelétrico.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 éférerirés.
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

41605601TH Rev.2 15 /
2. OPERATION DESCRIPTION
OKIPAGE14e consistsof amain controlboard, apowersupply/sensorboard,anoperatorpanel,an
electrophotographic process mechanism, and controls for the illumination of the LED head.
The main control board receives data via the host I/F, it then decodes, edits and stores the data in
memory. After completing the editing of a single page of data, it references the font memory and
generates bit image data, which is transferred to the LED head in one dot line units.
Through the electrophotographic process mechanism, the data is printed on the paper.
The operator panel is used for operations and status display.
OKIPAGE 14e block diagram is shown in Figure 2-1.

41605601TH Rev.2 16 /
Figure 2-1 OKIPAGE 14e Block Diagram
Expansion Board
(Option) RS232C Interface Board (Option)
or
Program & Font ROM
8MB Mask ROM Resident RAM
2MB x 2 DRAM
(4MB)
For optional board
Main Control Board
High Voltage
Unit
DATA
BUS
(32bit)
EEPROM
74LS07
ML60851
Inlet sensor 1
Inlet sensor 2
Paper sensor
Outlet sensor
Paper out sensor
Toner low sensor
Reset
circuit
Centronics
parallel I/F
USB I/F 1 Chip CPU
Drum motor &
Registration motor
drive circuit
FAN Driver FAN ALM
HEAT ON
LSI
AC-DC
Converter
High voltage
generation
circuit
Charge roller
Sub-
Charge roller
Transfer roller
Developping
roller
Toner supply
roller
Cleaning
roller
FAN
LED Head
M
M
Registration Motor
Drum Motor
High Capacity
Second Paper
Feeder (Option)
Multi-Purpose
Feeder (Option)
Operation Panel
Cover
open
switch
Fusing temperature
control circuit
Heater drive
circuit
Filter circuit AC IN
Heater
Thermistor
Power Supply Unit
5V
12V
30V
5V
5V

41605601TH Rev.2 17 /
2.1 Main Control Board
The main control board consists of a single chip CPU, two program/font ROMs, four DRAMs, an
EEPROM, a host interface circuit, and a mechanism driving circuit.
(1) Single chip CPU
ThesinglechipCPUisacustomCPU(32-bitinternalbus,32-bitexternalbus,49.766-MHzclock)
which incorporates the RISC CPU and its peripheral devices, and has the following functions:
(2) Program and Font ROMs
The Program and Font ROMs store the equipment program and various types of fonts. Mask
ROM is used as Program and Font ROMs. The mounting locations of these Program and Font
ROMs vary depending on the type of the ROMs.
(3) DRAM
The DRAM is a 4MB resident memory on the main control board that stores edited data, image
data, DLL data and macro data.
(4) EEPROM
4,096-bit Electrically Erasable PROM (EEPROM), is loaded with the following kinds of data:
•Menu data
•Various counter data (page counter, drum counter)
•Adjusting parameters (LED head drive time, print start position, paper feed length)
(5) Parallel Interface
Parallel data is received from a host system via parallel interface which conforms to the
IEEE1284 specification.
(6) USB Interface
SerialdataisreceivedfromahostsystemviaUSBwhichconformstotheUSB 1.1specification.
Built-in device Function
Chip select controller
Bus controller
DRAM controller
DMA controller
Parallel interface controller
Serial interface controller
Video output port
LED STB output port
Timer
Serial I/O port
I/O port
Control of ROM, DRAM and I/O device
Transfer of image data from DRAM to video output port
Control of Centronics parallel interface
Control of RS-232C serial interface
Control of LED head
Generation of various control timing
Monitoring of paper running and paper size
Control of operator panel, EEPROM, and options
Input and output of sensor and motor signals

41605601TH Rev.2 18 /
2.2 Power Supply/Sensor Board
The power supply/sensor board consists of an AC filter circuit, a low voltage power supply circuit, a
high voltage power supply circuit, heater drive circuit, and photosensors.
(1) Low Voltage Power Supply Circuit
This circuit generates the following voltages.
(2) High Voltage Power Supply Circuit
This circuit generates the following voltages required for electrophotographic process from +5
V, according to the control sequence from the main control board. When cover open state is
detected, +5 V supply is interrupted automatically to stop the supply of all high-voltage outputs.
Output voltage Use
+5 V
+30 V
+12 V
Logic circuit supply voltage and LED head supply voltage
Motor and fan drive voltage
Source voltage for high-voltage supply
(3) Photosensor
Thephotosensormountedonthispowersupply/sensorboardmonitorsthestatusofpaperbeing
fed through the printer during printing.
Output Voltage Use Remarks
CH
Sub CH
DB
SB
TR
CB
Voltage applied to charge roller
Voltage applied to sub-charge roller
Voltage applied to developing roller
Voltage applied to toner supply roller
Voltage applied to transfer roller
Voltage applied to cleaning roller Variable
–1.3 KV
–1.5 KV to –1.8 KV
–265 V/+300 V
–500 V/ 0 V
+500 V to +4.5 KV/–1100 V
+400 V/–1350 V

41605601TH Rev.2 19 /
Figure 2-2
The sensor layout diagram is shown in Figure 2-2.
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
Sensor Function Sensing state
Inlet sensor 1
Inlet sensor 2
Paper sensor
Outlet sensor
Paper end sensor
Toner low sensor
Detects the leading part of the paper and gives the monitor timing
for switching from hopping operation to feeding operation.
Monitors paper feeding situation and paper size based on the
paper arrival time and running time.
Detects the paper width.
Detects the leading portion of the paper.
Monitors the paper feeding situation.
Monitors the paper feeding and size according to the time of
arrival to and leaving past the sensor.
Detects the end of the paper.
Detects the lack of toner.
ON: Paper exists.
OFF: No paper exists.
ON: larger than A4
OFF: Smaller than A4
ON: Paper exists.
OFF: No paper exists.
ON: Paper exists.
OFF: No paper exists.
ON: Paper exists.
OFF: No paper exists.
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