190, Input Output | Oki 24DX instruction

5)Interface circuit

a) Receiving circuit

75189 or equivalent

INPUT

OUTPUT

+12V

+3V -3V

INPUT

-12V

b) Sending circuit

75188 or equivalent
INPUT		OUTPUT
OUTPUT		+3V	+9V
		+3V
	-3V
45ns	55ns		-9V

Note: The above signal level is for the case where 3KΩ x 15pF is being connected to the terminal.

6)Communications protocol

a)READY/BUSY protocol

b)X-ON/X-OFF protocol

40930701TH DRAFT Vesion

190 /

Image 171

Oki 24DX manual 190, Input Output

Contents

Draft Version LED Page Printer Preface Contents 105 Connector IMSA-9714N-14ALever-Paper end & Lever-Paper near end 101 192 Interconnection Diagram 213 PCB Layout 214191 Functions 191 Appearance and Parts Name Parts List OKI HSP System Configuration Shows the printer unit configuration Printer Configuration Optional Configuration 40930701TH Draft Vesion Specification Temperature and humidity Safety Standards Shows an OKIPAGE24DX / OKIPAGE24dx block diagram OKIPAGE24DX / OKIPAGE24dx block diagram PS ROM Main Control Board BOARD-FFFProgram/font ROMs PCL ROM Menu Eeprom LAN ON/X-OFF Rbst X-ON Board-FSL or Board-FSL-2 4MB 8MB Power Supply Unit OFF Shows the sensor layout diagram LED Head Electro-photographic Process 40930701TH Draft Vesion 40930701TH Draft Vesion Paper Eject roller PWM1-P Cluch for hopping PWM2-P Cluch for Registration DMON-N Drum Motor HMON-N Hopping Motor Duplex Unit OFF Paper Tray Printer Printer Stacker Duplex Printing Timing ChartDuplex Unit DUPRSNS-N Rear Sensor inDUPLEX Unit DUPFSNS-N Front Sensor Hopping Motor Front Feeder Duplex Unit 1st Tray Pressure Roller Regist Roller Start printing. after the paper turns off the Write Sensor 180 FF Cam Micro SW Front Feeder Plate Home position~30 Front Hopping Shaft 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 SNS DUP RollerRetracting paper Sending out paper LED LED LED LED LED LED LED STRB4-N STRB3-N DataLSI Eeprom Clock STRB1-N STRB2-N STRB3-N STRB4-N ReadData Clock Load STRB4~1 Direct CPU One side wire-bonding head Correction Total 5200 clocks LED Correction Data Clock Load DATA3~0 STRB1-N STRB2-N STRB3-N STRB4-N Printing operation timing chart is shown below Paper Jam Detection Cover Open Stirring Gear Toner Low Detection Toner Full state Toner LOW stateT1 2.727/4 727 SEC SW1 SW2 SW3 SW4 Stacker-full DetectionSize Detection Paper size Precautions for Parts Replacement Service Tools Place of use Parts Layout Roller Guide Photo sensor Motor Solenoid Assy This section explains how to below How to Change Parts 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 Cleaning Periodic Replacing Part118 119 120 Troubleshooting TipsPoints to Check before Correcting Image Problems Tips for Correcting Image Problems Preparation for Troubleshooting Troubleshooting Flow121 122 Category LCD status message Trouble or status RemedyDUPLEX, Simplex Received and abandoned until the completion of a job 123 124 Manual A4 Size Request 125 Load the requested paper in tray 126 FFF 127 DUP R SNS on ~ DUP F SNS on 128DUP Insns on DUP Insns OFF 129 If the error occurs frequently, see chapter Trouble or status Remedy Message 130Category LCD Ready Trouble or status Remedy 131 Category LCD 132 Time-out between the printer and the operator panel ERROR74ERROR80 133 Printer does not work normally after being turned on 134YES END Message shown in the LCD display? Replace the Main board 135Yes Is Initializing Power Connector 136INLETSW1 137 JAM error Paper input jam 1st tray 138Replace the Gear ASSY-CLUTCH Z50 Replace the front feeder paper sensor assembly Paper input jam front feeder139 140 Paper feed jam Go to on the next page a 141 142 143 Paper exit jam 144 Duplex Input JAM Duplex Feed JAM1 Duplex Feed JAM145 146 Is the Duplex Front sensor lever operating normally?Sensor F/R Paper size error 147Does the outlet sensor lever operate smoothly 148 Fuser unit error Error 71, Error 72, Error 149 F time-out between printer and optional tray Error F time-out between printer and Duplex Unit Error150 151 Message cannot be received through the parallel interface 152 Message cannot be received through the serial interface OK? Synchronous serial I/O error ErrorData cannot be received through the OKI HSP interface 153 Abnormal images 154 Replace the image drum cartridge Replace the Main board or Power Supply Unit High VoltageImage are light or blurred a whole 155 Enter keys. Set the LED head drive time. Refer to Section Dark background densityBlack paper is output 156 Refer to Section Black belts or stripes in the vertical direction157 Enter keys. Set the LED head drive time 158 Cyclic error 159 Print voids 160 Poor fusing White belts or streaks in the vertical direction 161Yes Replace the LED head Has the trouble been removed? Snowy print of high density pattern Blockly faded print162 163 164 165 Interconnect Signal Diagram To Printer Unit 166 PCB Layout 167Main board BOARD-FFF Power supply board AC120V/230V Power supply board High voltage168 ROM 169LEX-PCB CPU 170 Resistance Check 171 Program/Font ROM Location 172Case of EP ROM or OTP ROM Case of Mask ROM 173 Printer Unit 174 175 SMCD6X280BDX10BLDuplex Unit ODA Frame-Main 176 Frame-Main Unit 1/2 177 PLATE-FG F 178Frame-Main Unit 2/2 Roller ASS.-BK Base Unit 179 GEAR-Z58 180Base Unit 1/2 GEAR-Z38 NK3-16SUS 181 Base Unit 2/2BRACKET-AC 182 PULLEY-MXL25 183Duplex Unit 1/2 GEAR-Z40S6 NK2-12SUS 184Duplex Unit 2/2 SPRING-SL 185 Connector pin arrangement 186 LOWHigh 187 Timing charts Compatible mode Data receiving timingOn-line → off-line switching timing by ON-LINE SW Off-line → on-line switching timing by ON-LINE SW Nibble Mode Conforms to Ieee 1284 spec ECP Mode 188INPUT. Prime Busy Select 189 Appendix B RS-232C Serial Interface 190 Input OutputInput Functions Appearance and Parts Name191 192 Driving Mechanism 193 194 Hopper Mechanism 195 Precautions Concerning Parts Replacement 196 OKI P/N4PP4076-5395P1 This section describes the layout of the main components 197 198 Parts Replacement Methods 199 200 201 202 203 204 205 206 207 208 209 Precautions Prior to the Troubleshooting Preparations for the Troubleshooting210 211 Troubleshooting Method YES 212 To 3rd Tray Interconnection Diagram 2nd tray/ 3rdTray auto Setting switch To Printer Unit 2nd Tray BBB-PCB 214 215 High Capacity Second/ Third Paper Feeder 1/2 216 High Capacity Second/ Third Paper Feeder 2/2 217 Approximately 50 sheets of envelopes can be set at a time External View and Component Names218 Main functions are the followings Paper that can be used 219 General Mechanism 220 221 222 223 224 Check at the time of assembly 225 226 227 228 229 230 231 232 233 Check FeederCheckfeeder 234 235 Interconnection Diagram 236 237 /237