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Oki
24DX
manual
40930701TH Draft Vesion
Models:
24DX
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218 pages
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Troubleshooting
Specs
Parts list
Interconnect Signal Diagram
ERROR74
One side wire-bonding head
System Configuration
Connector IMSA-9714N-14A
Check at the time of assembly
Tray auto Setting switch
Page 10
Image 10
(4) Flash ROM module (72 pin SIMM, 4MB/8MB)
See 7.2 (1) for where to install.
40930701TH DRAFT Vesion
10 /
Page 9
Page 11
Page 10
Image 10
Page 9
Page 11
Contents
LED Page Printer
Draft Version
Preface
Contents
101
Connector IMSA-9714N-14A
Lever-Paper end & Lever-Paper near end
105
Functions 191 Appearance and Parts Name
Interconnection Diagram 213 PCB Layout 214
191
192
Parts List
System Configuration
OKI HSP
Printer Configuration
Shows the printer unit configuration
Optional Configuration
40930701TH Draft Vesion
Specification
Temperature and humidity
Safety Standards
Shows an OKIPAGE24DX / OKIPAGE24dx block diagram
OKIPAGE24DX / OKIPAGE24dx block diagram
PCL ROM
Main Control Board BOARD-FFF
Program/font ROMs
PS ROM
Eeprom
Menu
ON/X-OFF Rbst X-ON
LAN
Board-FSL or Board-FSL-2 4MB 8MB
Power Supply Unit
Shows the sensor layout diagram
OFF
Electro-photographic Process
LED Head
40930701TH Draft Vesion
40930701TH Draft Vesion
Paper Eject roller
DMON-N Drum Motor HMON-N Hopping Motor
PWM1-P Cluch for hopping PWM2-P Cluch for Registration
DUPRSNS-N Rear Sensor inDUPLEX Unit DUPFSNS-N Front Sensor
Printer Stacker Duplex Printing Timing Chart
Duplex Unit
Duplex Unit OFF Paper Tray Printer
Hopping Motor Front Feeder Duplex Unit 1st Tray
Pressure Roller Regist Roller
Start printing. after the paper turns off the Write Sensor
Front Hopping Shaft
Home position
~30
180 FF Cam Micro SW Front Feeder Plate
Gear E Clutch Feed Gear D Align Roller Main Motor
Power Supply
40930701TH Draft Vesion
Image drum Paper Transfer roller
Heater Separation Claw
Image Drum Cleaning Roller Power Supply Transfer Roller
Roller
SNS DUP
Retracting paper Sending out paper
Clock
STRB4-N STRB3-N Data
LSI Eeprom
LED LED LED LED LED LED LED
Clock Load
Read
Data
STRB1-N STRB2-N STRB3-N STRB4-N
Direct
STRB4~1
One side wire-bonding head
CPU
Correction
Total 5200 clocks
LED Correction Data
Printing operation timing chart is shown below
Clock Load DATA3~0 STRB1-N STRB2-N STRB3-N STRB4-N
Paper Jam Detection
Cover Open
Toner Low Detection
Stirring Gear
Toner LOW state
Toner Full state
T1 2.727/4 727 SEC
Paper size
Stacker-full Detection
Size Detection
SW1 SW2 SW3 SW4
Precautions for Parts Replacement
Service Tools Place of use
Parts Layout
Roller
Guide
Photo sensor Motor Solenoid Assy
How to Change Parts
This section explains how to below
40930701TH Draft Vesion
Unlock this part before removing 40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
View a
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
40930701TH Draft Vesion
Pull the Duplex Unit out of the unit
Printer Groove
PLATE-Earth F/R 40930701TH Draft Vesion
40930701TH Draft Vesion
From the results of installation
View
40930701TH Draft Vesion
Periodic Replacing Part
Cleaning
118
119
Tips for Correcting Image Problems
Troubleshooting Tips
Points to Check before Correcting Image Problems
120
Troubleshooting Flow
Preparation for Troubleshooting
121
Category LCD status message Trouble or status Remedy
122
DUPLEX, Simplex
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Received and abandoned until the completion of a job
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Manual A4 Size Request
126
Load the requested paper in tray
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FFF
DUP Insns OFF
128
DUP Insns on
DUP R SNS on ~ DUP F SNS on
If the error occurs frequently, see chapter
129
LCD Ready
130
Category
Trouble or status Remedy Message
131
Trouble or status Remedy
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Category LCD
133
ERROR74
ERROR80
Time-out between the printer and the operator panel
134
Printer does not work normally after being turned on
YES END
Initializing
135
Yes Is
Message shown in the LCD display? Replace the Main board
136
Power Connector
INLETSW1
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JAM error Paper input jam 1st tray
Replace the Gear ASSY-CLUTCH Z50
Paper input jam front feeder
Replace the front feeder paper sensor assembly
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Paper feed jam
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Go to on the next page a
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Paper exit jam
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Duplex Input JAM
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Duplex Feed JAM
Duplex Feed JAM1
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Is the Duplex Front sensor lever operating normally?
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Sensor F/R
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Paper size error
Does the outlet sensor lever operate smoothly
Fuser unit error Error 71, Error 72, Error
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F time-out between printer and Duplex Unit Error
F time-out between printer and optional tray Error
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Message cannot be received through the parallel interface
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Message cannot be received through the serial interface
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Synchronous serial I/O error Error
Data cannot be received through the OKI HSP interface
OK?
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Abnormal images
155
Replace the Main board or Power Supply Unit High Voltage
Image are light or blurred a whole
Replace the image drum cartridge
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Dark background density
Black paper is output
Enter keys. Set the LED head drive time. Refer to Section
Enter keys. Set the LED head drive time
Black belts or stripes in the vertical direction
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Refer to Section
Cyclic error
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Print voids
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Poor fusing
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White belts or streaks in the vertical direction
Yes Replace the LED head Has the trouble been removed?
Blockly faded print
Snowy print of high density pattern
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Interconnect Signal Diagram
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To Printer Unit
167
PCB Layout
Main board BOARD-FFF
Power supply board High voltage
Power supply board AC120V/230V
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CPU
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LEX-PCB
ROM
Resistance Check
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Program/Font ROM Location
Case of EP ROM or OTP ROM
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Case of Mask ROM
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Printer Unit
SMCD6X280BDX10BL
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Duplex Unit ODA
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Frame-Main
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Frame-Main Unit 1/2
Roller ASS.-BK
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Frame-Main Unit 2/2
PLATE-FG F
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Base Unit
GEAR-Z38 NK3-16SUS
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Base Unit 1/2
GEAR-Z58
Base Unit 2/2
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BRACKET-AC
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GEAR-Z40S6
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Duplex Unit 1/2
PULLEY-MXL25
SPRING-SL
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Duplex Unit 2/2
NK2-12SUS
Connector pin arrangement
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LOW
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High
Off-line → on-line switching timing by ON-LINE SW
Timing charts Compatible mode Data receiving timing
On-line → off-line switching timing by ON-LINE SW
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Nibble Mode Conforms to Ieee 1284 spec ECP Mode
INPUT. Prime Busy Select
Appendix B RS-232C Serial Interface
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Input Output
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Input
Appearance and Parts Name
Functions
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Driving Mechanism
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Hopper Mechanism
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Precautions Concerning Parts Replacement
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OKI P/N
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4PP4076-5395P1
197
This section describes the layout of the main components
Parts Replacement Methods
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Preparations for the Troubleshooting
Precautions Prior to the Troubleshooting
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Troubleshooting Method
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YES
To Printer Unit 2nd Tray
Interconnection Diagram 2nd tray/ 3rd
Tray auto Setting switch
To 3rd Tray
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BBB-PCB
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High Capacity Second/ Third Paper Feeder 1/2
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High Capacity Second/ Third Paper Feeder 2/2
Main functions are the followings Paper that can be used
External View and Component Names
218
Approximately 50 sheets of envelopes can be set at a time
General Mechanism
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Check at the time of assembly
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Check Feeder
233
Checkfeeder
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Interconnection Diagram
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