Oki 24DX - page 14

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2. OPERATION DESCRIPTION

OKIPAGE24DX / OKIPAGE24dx consists of a main control board, a power supply unit (120V/

230V), a power supply unit (high voltage), an operator panel and an electro-photographic process

mechanism.

The control board receives data through a host I/F, decodes and edits the data, and stores the

edited data in a memory. After completing edition of one page of data, it references the font

memory and generates bit data on the same memory. At the same time, it transfers the bit image

data to an LED head in units of one dot line.

The electro-photographic process mechanism prints data on paper.

The operator panel is used for operations and status display.

Fig. 2-1 shows an OKIPAGE24DX / OKIPAGE24dx block diagram.

Contents

Main Page CONTENTS 2. OPERATION DESCRIPTION ...................................................................... 14 6. TROUBLESHOOTING PROCEDURES ...................................................... 120 APPENDIX D MULTI FEEDER MAINTENANCE................................................ 218 Page 40930701TH DRAFT Vesion 7 / 1. CONFIGURATION 1.1 System Configuration Figure 1-1 Printer : Paper feeding : Singal flow *: Consumables : produced by third vender 1.2 Printer Configuration Page Page 1.4 Specification Page Page Page Figure 2-1 OKIPAGE24DX / OKIPAGE24dx block diagram 2.1 Main Control Board (BOARD-FFF) Page Page Board-FSL or Board-FSL-2 (4MB) (8MB) 2.2 Power Supply Unit Figure 2-3 Figure 2-3 shows the sensor layout diagram. 2.3 Electro-photographic Process Page Page Figure 2-5 Figure 2-6 Figure 2-7 Page Page Page Page Page Page Page Page Page Page Page Page 40930701TH DRAFT Vesion 40 / (i) Read of correction data (ii) Transfer of correction data to head driver correction data Page (i) Read of correction data (ii) Transfer of correction data to head driver correction data Page Page 2.4 Paper Jam Detection Page 2.6 Toner Low Detection Magnet Protrusion Stirring Bar Stirring Gear Page 2.7 Stacker-full Detection 2.8 Page Size Detection 3.1 Precautions for Parts Replacement Table 3-1 shows the tools required for field replacement of printed circuit boards and units. Figure 3-1 3.2 Parts Layout Figure 3-2 Figure 3-3 Figure 3-4 3.3 How to Change Parts This section explains how to change parts and assemblies appearing in the disassembly diagram below. Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 5. PERIODIC MAINTENANCE 5.1 Periodic Replacing Part 5.2 Cleaning Page Page 6.4 Preparation for Troubleshooting 6.5 Troubleshooting Flow Page Page Page Page Page Page Page Page Page Page Page Page 1The printer does not work normally after being turned on. Page 40930701TH DRAFT Vesion 136 / FRONT IC5 IC6 IC31 IC7 IC8 IC30 Figure 6-1 Connector and Pin Location C2C3 C1 INLET L3 SW1 L4 Figure 6-3 Connector and Pin Location [JAM error] 2-1 Paper input jam (1st tray) A 2-2 Paper input jam (front feeder) B A 2-3 Paper feed jam Page Page 2-4 Paper exit jam 2-5 Duplex INPUT JAM 2-6 Duplex FEED JAM1 2-7 Duplex FEED JAM 2 2-8 Duplex FEED JAM 3 3Paper size error 4Fuser unit error (ERROR 71), (ERROR 72), (ERROR 73) A B A B 7I/F time-out occurs between the printer and the operator panel (ERROR 80) . 5I/F time-out between printer and optional tray (ERROR 81) . 6I/F time-out between printer and Duplex Unit (ERROR 83) 8Message cannot be received through the parallel interface. 9Message cannot be received through the serial interface. 0Data cannot be received through the OKI HSP interface ASynchronous serial I/O error (ERROR 74) C 1Image are light or blurred a whole. 2Dark background density 3Black paper is output. 4Black belts or stripes in the vertical direction 5Cyclic error Notes: 6Print voids 7Poor fusing 8White belts or streaks in the vertical direction 9Snowy print of high density pattern 0Blockly faded print Page Page 40930701TH DRAFT Vesion 165 / 7. WIRING DIAGRAM 7.1 Interconnect Signal Diagram SENSOR STUKKER FULL 3P STKFULL BOARD-LEX to Printer Unit 40930701TH DRAFT Vesion 167 / 7.2 PCB Layout Socket for FLASH SIMM PCL ROM (EVEN1) PS ROM (EVEN) PCL ROM (ODD1) (2) Power supply board (AC120V/230V) (3) Power supply board (High voltage) 40930701TH DRAFT Vesion 169 / (4) LEX-PCB 12 1 ROM CPU MAIN M 7.3 Resistance Check M 40930701TH DRAFT Vesion 172 / 7.4 Program/Font ROM Location (1) In case of EP ROM or OTP ROM 40439501 40439601 40439701 40439801 Note Note: short plug (TA1) setting setting: 1pin2pin (2) In case of MASK ROM IC7 IC8 IC30 RS232C MUPIS FANENDLOW2NDTRAY CLRCLH 8. PARTS LIST Figure 8-1 Printer Unit Table 8-1 Printer Unit Figure 8-2 Frame-Main Unit Table 8-2 Frame-Main Unit (1/2) 40930701TH DRAFT Vesion 178 / Table 8-2 Frame-Main Unit (2/2) 40930701TH DRAFT Vesion 179 / Figure 8-3 Base Unit 40930701TH DRAFT Vesion 180 / Table 8-3 Base Unit (1/2) Table 8-3 Base Unit (2/2) 40930701TH DRAFT Vesion 182 / Figure 8-4 Duplex Unit Table 8-4 Duplex Unit (1/2) Table 8-4 Duplex Unit (2/2) 40930701TH DRAFT Vesion 185 / Appendix A CENTRONICS PARALLEL INTERFACE Connector pin arrangement Cable is not provided. 3) Table of parallel I/F signals C R1 R2 +5V 74LS19 or equivalent 6) Timing charts Compatible mode a) Data receiving timing b) On-line off-line switching timing by ON-LINE SW c) Off-line on-line switching timing by ON-LINE SW SELECT ACKNOWLEDGE ON-LINE SW BUSY Page Appendix B RS-232C SERIAL INTERFACE Page Page 2. DESCRIPTION OF OPERARTION 2.1 Driving Mechanism Page Page 3.1 Precautions Concerning Parts Replacement Page Page 3.3 Parts Replacement Methods Page Page Page Page Page Page Page Page Page Page Page Page 4.3 Troubleshooting Method Page 40930701TH DRAFT Vesion 213 / 5. CONNECTION DIAGRAM 5.1 Interconnection Diagram BOARD-BBB to PRINTER UNIT / 2nd TRAY 2nd tray/ 3rd tray auto setting switch to 3rd TRAY 5.2 PCB Layout BBB-PCB IC1 CPU 6. PARTS LIST 40930701TH DRAFT Vesion 216 / Table 6-1 High Capacity Second/ Third Paper Feeder (1/2) 40930701TH DRAFT Vesion 217 / Table 6-1 High Capacity Second/ Third Paper Feeder (2/2) Appendix D MULTI FEEDER MAINTENANCE 1. OUTLINE 1.1 Functions 1.2 External View and Component Names * approximately 50 sheets of envelopes can be set at a time. 2. MECHANISM DESCRIPTION 2.1 General Mechanism 2.2 Hopper Mechanism 3.1 Precautions Concerning Parts Replacement Page Page Page Page Page Page Page Page Page Page Page Page Page Page 5. CONNECTION DIAGRAM 5.1 Interconnection Diagram AOLE - PCB M 5.2 PCB Layout 6. PARTS LIST 40930701TH DRAFT Vesion 236 / 40930701TH DRAFT Vesion 237 / Table 6-1 Multi Feeder 40930701TH DRAFT Vesion 237 / 237