Manuals / Oki / Computer Equipment / Printer

Oki 24DX manual 171

Models: 24DX

1 218

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40930701TH DRAFT Vesion

Unit

Circuit Diagram	Illustration	Resistance
Orange

1

Hopping motor

M

Yellow

2

Brown

3

Black

4

Between pins 1 and 2: 6.7Ω

Between pins 3 and 4: 6.7Ω

1

Red

+38 V

3

Yellow

FANALM-N

Fan

2

M

Black

171 /

0 V

Image 152

Oki 24DX manual 171

Contents

LED Page Printer Draft VersionPreface Contents Connector IMSA-9714N-14A Lever-Paper end & Lever-Paper near end101 105Interconnection Diagram 213 PCB Layout 214 191Functions 191 Appearance and Parts Name 192Parts List System Configuration OKI HSPPrinter Configuration Shows the printer unit configurationOptional Configuration 40930701TH Draft Vesion Specification Temperature and humidity Safety Standards Shows an OKIPAGE24DX / OKIPAGE24dx block diagram OKIPAGE24DX / OKIPAGE24dx block diagram Main Control Board BOARD-FFF Program/font ROMsPCL ROM PS ROMEeprom MenuON/X-OFF Rbst X-ON LANBoard-FSL or Board-FSL-2 4MB 8MB Power Supply Unit Shows the sensor layout diagram OFFElectro-photographic Process LED Head40930701TH 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 RegistrationPrinter Stacker Duplex Printing Timing Chart Duplex UnitDUPRSNS-N Rear Sensor inDUPLEX Unit DUPFSNS-N Front Sensor Duplex Unit OFF Paper Tray PrinterHopping Motor Front Feeder Duplex Unit 1st Tray Pressure Roller Regist Roller Start printing. after the paper turns off the Write Sensor Home position ~30Front Hopping Shaft 180 FF Cam Micro SW Front Feeder PlateGear 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 Retracting paper Sending out paper SNS DUPRoller STRB4-N STRB3-N Data LSI EepromClock LED LED LED LED LED LED LEDRead DataClock Load STRB1-N STRB2-N STRB3-N STRB4-NDirect STRB4~1One side wire-bonding head CPUCorrection Total 5200 clocks LED Correction Data Printing operation timing chart is shown below Clock Load DATA3~0 STRB1-N STRB2-N STRB3-N STRB4-NPaper Jam Detection Cover Open Toner Low Detection Stirring GearT1 2.727/4 727 SEC Toner Full stateToner LOW state Stacker-full Detection Size DetectionPaper size SW1 SW2 SW3 SW4Precautions 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 below40930701TH 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 118 CleaningPeriodic Replacing Part 119 Troubleshooting Tips Points to Check before Correcting Image ProblemsTips for Correcting Image Problems 120121 Preparation for TroubleshootingTroubleshooting Flow DUPLEX, Simplex 122Category LCD status message Trouble or status Remedy 123 Received and abandoned until the completion of a job124 125 Manual A4 Size Request126 Load the requested paper in tray127 FFF128 DUP Insns onDUP Insns OFF DUP R SNS on ~ DUP F SNS onIf the error occurs frequently, see chapter 129130 CategoryLCD Ready Trouble or status Remedy Message131 Trouble or status Remedy132 Category LCDERROR74 ERROR80133 Time-out between the printer and the operator panelYES END Printer does not work normally after being turned on134 135 Yes IsInitializing Message shown in the LCD display? Replace the Main boardINLETSW1 Power Connector136 137 Replace the Gear ASSY-CLUTCH Z50 JAM error Paper input jam 1st tray138 139 Replace the front feeder paper sensor assemblyPaper input jam front feeder Paper feed jam 140141 Go to on the next page a142 Paper exit jam 143Duplex Input JAM 144145 Duplex Feed JAM1Duplex Feed JAM Sensor F/R 146Is the Duplex Front sensor lever operating normally? Does the outlet sensor lever operate smoothly Paper size error147 Fuser unit error Error 71, Error 72, Error 148149 150 F time-out between printer and optional tray ErrorF time-out between printer and Duplex Unit Error Message cannot be received through the parallel interface 151Message cannot be received through the serial interface 152Synchronous serial I/O error Error Data cannot be received through the OKI HSP interface153 OK?154 Abnormal imagesReplace the Main board or Power Supply Unit High Voltage Image are light or blurred a whole155 Replace the image drum cartridgeDark background density Black paper is output156 Enter keys. Set the LED head drive time. Refer to SectionBlack belts or stripes in the vertical direction 157Enter keys. Set the LED head drive time Refer to SectionCyclic error 158Print voids 159Poor fusing 160Yes Replace the LED head Has the trouble been removed? White belts or streaks in the vertical direction161 162 Snowy print of high density patternBlockly faded print 163 164 Interconnect Signal Diagram 165166 To Printer UnitMain board BOARD-FFF PCB Layout167 168 Power supply board AC120V/230VPower supply board High voltage 169 LEX-PCBCPU ROMResistance Check 170171 Case of EP ROM or OTP ROM Program/Font ROM Location172 173 Case of Mask ROM174 Printer UnitDuplex Unit ODA 175SMCD6X280BDX10BL 176 Frame-Main177 Frame-Main Unit 1/2178 Frame-Main Unit 2/2Roller ASS.-BK PLATE-FG F179 Base Unit180 Base Unit 1/2GEAR-Z38 NK3-16SUS GEAR-Z58BRACKET-AC 181Base Unit 2/2 182 183 Duplex Unit 1/2GEAR-Z40S6 PULLEY-MXL25184 Duplex Unit 2/2SPRING-SL NK2-12SUSConnector pin arrangement 185High 186LOW Timing charts Compatible mode Data receiving timing On-line → off-line switching timing by ON-LINE SWOff-line → on-line switching timing by ON-LINE SW 187INPUT. Prime Busy Select Nibble Mode Conforms to Ieee 1284 spec ECP Mode188 Appendix B RS-232C Serial Interface 189Input 190Input Output 191 FunctionsAppearance and Parts Name Driving Mechanism 192193 Hopper Mechanism 194Precautions Concerning Parts Replacement 1954PP4076-5395P1 196OKI P/N 197 This section describes the layout of the main componentsParts Replacement Methods 198199 200 201 202 203 204 205 206 207 208 209 210 Precautions Prior to the TroubleshootingPreparations for the Troubleshooting Troubleshooting Method 211212 YESInterconnection Diagram 2nd tray/ 3rd Tray auto Setting switchTo Printer Unit 2nd Tray To 3rd Tray214 BBB-PCB215 216 High Capacity Second/ Third Paper Feeder 1/2217 High Capacity Second/ Third Paper Feeder 2/2External View and Component Names 218Main functions are the followings Paper that can be used Approximately 50 sheets of envelopes can be set at a timeGeneral Mechanism 219220 221 222 223 Check at the time of assembly 224225 226 227 228 229 230 231 232 Checkfeeder 233Check Feeder 234 Interconnection Diagram 235236 237 /237