Oki 4M - Manuals

1 - 2 Upper Cover Assy EP Unit Heat Assy Main Control Board Top Cover Assy Power Supply Unit High-Voltage Power Supply Board 1.2 Printer Configuration The printer unit consists of the following five hardware components: • Electro-Photographic Processor• Paper Feeder• Main Control Board• High-Voltage...

1 - 3 1.3 Option (1) 2MB HBRB-PCB Option Memory Board(Only OKIpage 4m)

1 - 4 1.4 Specification (1) Type Desktop (2) Outside dimensions Height 5.9” (150 mm) (excludes protruding Width 12.2” (310 mm) portion) Depth 7.5” (191 mm) (3) Weight 3.8 kg (4) Development method Dry non-magnetic development system Exposure method LED stationary head (5) Paper used <Type>• St...

1 - 5 (12) Temperature and humidity Temperature During operation In storage 10 to 32 ˚C –10 to +43 ˚C 20 to 80% RH (relative humidity) 10 to 90% RH (relative humidity)No condensation is permissible. Humidity Caution: Temperature and humidity in storage are measured with the OKIPAGE 4w plus/4m being ...

1 - 6 For OEL For OEL, OKI-INT For China, TAIWAN For Korea OKI-INT 4w Plus 1.5 Safety Standards 1.5.1 Certification Label The safety certification label is affixed to the following location of the OKIPAGE 4w: 1.5.2 Warning Label Warning labels are affixed to the locations that may cause bodily injur...

2 - 4 Controls DRAM. Built-in Device Function DRAM controller Transfers image data from Parallel I/F to DRAM, from DRAM to a video output port and between CPU and DRAM. Video output portLED STB output port Generates various control timings for monitoring paper feeding and a paper size. Inputs the fe...

2 - 5 Used to generate a logic circuit and a high voltage. Used to drive the motor and electromagnetic clutch. Output voltage Application +5 V +24 V Output Application CH DB SB CB TR Voltage –1.35 KV –300 V/+300 V –450 V/ 0 V +400 V +500 V ~ +3.5 KV/–750 V Voltage to be applied to a charge roller. V...

2 - 6 Sensor Function Sensing State Manual feed sensor ON: Paper exists.OFF: No paper exists. Monitors whether paper was inserted into the manual feed sensor section. Detects the leading part of the paper.Monitors paper feeding. Monitors paper feeding and the paper size according to the paper sensor...

2 - 7 2.4 Electro-Photographic Processor The electro-photographic processor prints out the image data to be sent from the main controlboard on sheets of paper. Figure 2-3 shows the layout drawing of the electro-photographicprocessor. (1) Image drum unit The image drum unit makes a toner adhere to th...

2 - 8 Figure 2-3 Layout Drawing of Electro-Photographic Processor Exit roller Heat roller (ø 19.910) 6.85 10 OFF ON 26.50 Outlet sensor Cleaning roller (ø 9.000) Charge roller (ø 9.000) 6.77 LED head Drum roller (ø 16.000) Developing roller (ø 14.000) 17.23 12.72 23.18 20.32 64.60 Single tray Transf...

2 - 10 Figure 2-4 Schematic Drawing of OKIPAGE4w Plus/4m Paper Feeding Exit roller Heat roller Transfer roller Cleaning roller CH roller Drum roller Developing roller Outlet sensor Paper sensor Hopping roller TRAY printing Feed roller Manual feed sensor Manual printing 2 Roller to be driven by rever...

2 - 11 2.5 Electro-Photographic Process (1) Electro-photographic process The electro-photographic process is outlined below. 1 Charging The surface of the OPC drum is charged negatively and uniformly by applying the DCvoltage to the CH roller. 2 Exposure Light emitted from the LED head irradiates th...

2 - 12 Figure 2-5 Flow for Electro-Photographic Process Control signal Exposure Transfer Paper supply Charging Paper delivery Paper feeding Fusing Cleaning Development Paper sensor LED head Power supply Charge roller Power supply Transfer roller Cleaning roller Paper eject roller Outlet sensor Power...

2 - 14 Rotate the pulse motor (main) in the a direction. The planetary gear rotates in the a’ direction,dislocating its position in the a” direction. This causes the planetary gear to be separated fromgear A. The hopping gear will not rotate. The triple gear and transfer gear rotate via the idlegear...

2 - 19 2.6 Paper Jam Detection The OKIPAGE 4w Plus/4m monitors the paper status when the power supply is on and duringprinting. In the following cases, the OKIPAGE 4w Plus/4m interrupts the printing process as apaper jam. Printing can be recovered by opening the cover, removing the jammed paper, and...

2 - 21 Paper Feed Check List 2.7 Toner Low Detection • Hardware configuration of toner sensor The figure below shows the hardware configuration of the toner sensor. Caution: The toner sensor is not monitored when the drum is inactive. (a) When the toner-low state continues twice, Toner Low occurs. (...

2 - 22 (2) The basic rotation cycle of the toner sensor is as follows: 2.8 Cover Open Opening the stacker cover turns off the microswitch on the high-voltage power supply board tosuspend +5 V supply to the high voltage power supply. This results in the stop of all high-voltageoutputs. At the same ti...

3 - 1 3. PARTS REPLACEMENT This chapter explains how to replace parts, assemblies, and units in the field. The replacement procedures to be explained here include dismounting, not mounting. Whenmounting parts, assemblies, and units, reverse the dismounting steps. 3.1 Precautions for Parts Replacemen...

3 - 3 3.2 Parts Layout This section explains the layout of main parts. [Upper Cover Assy] Upper cover Guide slide (L) Spur gear (A) Guide slide (R) Hopper plate Figure 3-1

3 - 6 3.3 Replacing Parts This section explains how to replace parts and assemblies. 3.3.1 Hopper Plate (1) Remove two claws and dismount hopper plate 1 . 1

3 - 18 3.3.11 Pressure Roller B (Back Up Roller) (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Dismount the heat assy. (See Section 3.3.9.) (4) Dismount the engagement with the left ground, then pressure roller B 1 ...

3 - 24 3.3.16 Paper Sensor E, Paper Sensor Exit and Toner Sensor Assy (1) Dismount the upper cover assy. (See Section 3.3.4.) (2) Dismount the high-voltage power supply board. (See Section 3.3.5.) (3) Dismount the base frame. (See Section 3.3.12.) (4) Dismount the paper holder assy. (See Section 3.3...

4 - 1 4. ADJUSTMENT This chapter explains adjustment necessary when a part is replaced. This adjustment is made by changing the parameters values set in EEPROM on the main controlboard. The printer driver or maintenance utility can be used to change these values. Only servicemen and maintenance pers...

4 - 3 4.1.2 Engine Maintenance Utility See Appendix D. 4.2 Adjustment When Replacing a Part The table below lists the parts that requires adjustment when they are replaced. Luminous intensity display 070 314 Figure 4-2 Part to be Replaced Adjustment LED head EP unit Reset the drum counter. (Refer to...

4 - 5 4.2.3 Uploading and Downloading EEPROM Data When the main control board is replaced, EEPROM data must be reflected on a new main controlboard. Use “EEPROM Operations” in the option tab of the maintenance utility to reflect EEPROMdata on the new main control board. (See Figure 4-4.) Reflect EEP...

5 - 1 5. PERIODICAL MAINTENANCE 5.1 Periodical Replacement Parts Table 5-1 lists the part and unit to be replaced periodically. Table 5-1 Routine Replacement Parts Toner cartridge Part Name Replacement Time Part to be Checked Simultaneously Remarks EP unit When "Toner Low" is displayed. When...

5 - 2 Figure 5-2 LED head cleaner LED lens array (1) Set the LED head cleaner in the LED lens array, as shown in the figure below, and slide the cleaner left and right several time to clean the head. Caution: Do not press the LED head cleaner against the LED lens array.

6 - 1 6. TROUBLESHOOTING PROCEDURES 6.1 Troubleshooting Tips (1) Check the basic check points written in the user’s manual. (2) Gather detailed failure information as much as possible from the customer. (3) Check the printer under the condition close to that under which the failure occurred. 6.2 Che...

6 - 2 Trouble Trouble indicated by the message displayed on the status monitor. Image problem (or trouble not displayed on the status monitor) Perform detailed troubleshooting according to the troubleshooting flow.(See Section 6.5.2.) Troubleshoot according to Section 6.5.3. Troubleshoot according t...

6 - 3 Status Code Category Status Message Display Content Remedy Table 6-1 Warming-up status Online (ready) status Power save status The toner amount of the toner cartridge is small. The EP unit is not installed or the toner sensor isfaulty. Life of EP drum The paper is in the manual feed mode. Prin...

6 - 6 6.5.2 Status Message Troubleshooting Some failures cannot be corrected according to the status message trouble list. Troubleshootthese failures according to the following troubleshooting flowcharts: Caution: When replacing the main control board troubleshooted according to the troubleshoot- in...

6 - 8 [JAM error] 2 -1 Paper input jam • Does a paper input jam occur when the power supply is turned on? • Yes Is the jammed paper on paper sensor E? • Yes Remove the jammed paper. • No Is paper sensor E (manual feed/paper) operating normally? • No Replace paper sensor E (manual feed or paper). • Y...

6 - 11 3 Paper size error • Is the paper of the specified size being use? • No Use paper of the specified size. • Yes Is paper sensor E (paper) operating normally? • No Replace paper sensor E (paper) or clean the inlet sensor on the high-voltagepower supply board. • Yes Is the paper sensor (exit) op...

6 - 12 4 Heat assy error • Turn the power supply off, then on again. • Does the Halogen lamp of the heat assy go on? • No Is the Halogen lamp or thermostat disconnected? • Yes Replace the heat assy, Halogen lamp, or thermostat. • No Replace the power supply unit. • Yes Are the CN2 connectors of the ...

6 - 13 A Light or blurredimages entirely B Dark backgrounddensity C Blank paper D Black vertical stripes E Cyclical defect F White vertical belts or streaks Figure 6-3 Image Problems 6.5.3 Image Troubleshooting This section explains how to troubleshoot when an image problem is output as a result of ...

6 - 14 1 An image is light or blurred entirely. • Is the toner low? (Is "Toner Low" being displayed?) • Yes Supply a toner. • No Is the specified paper being used? • No Use the specified paper. • Yes Is the lens of the LED head dirty? • Yes Clean the LED head. • No Is the LED head installed ...

6 - 15 2 Dark background density • Has the OPC drum being exposed to external light? • Yes Set the OPC drum in the OKIPAGE 4w Plus/4m and wait for about 30 min-utes. • No Is the heat roller of the heat assy dirty? • Yes Clean the heat roller. • No Is the terminal of the EP unit in correct contact wi...

6 - 16 4 Vertical black belt/stripe • Replace the EP unit. • Has this error been recovered? • Yes End Caution: After replacing the EP unit, reset the drum counter. (Refer to "Replacing the Drum Cartridge" in "User's Manual".) • No Replace the LED head. • Has this error been recovered...

6 - 17 6 A blank paper is output. • Is the contact plate of the transfer roller in correct contact with the high-voltage power supply board? • No Contact the contact plate of the transfer roller correctly. • Yes Replace the transfer roller. • Has this error been recovered? • Yes End • No Is the term...

6 - 18 7 Poor fusing • Is the specified paper being used? • No Use the specified paper. (xerox 4200 (20 lbs)) • Yes Is the bias spring normal? (Tension: 2.5 kg) • No Replace the bias spring. • Yes Are the heater connector of the heat assy and the CN1 connector of the powersupply unit connected corre...

6 - 19 8 Vertical white belt/spripe • Is the lens of the LED head dirty? • Yes Clean the LED head. • No Is the contact plate of the transfer roller in correct contact with the high-voltagepower supply board? (See Figure 6-5 E .) • No Contact the contact plate of the transfer roller correctly. • Yes ...

6 - 20 Figure 6-4 Contents A : Toner Supply Roller B : Developing Roller C : Charge Roller D : Cleaning Roller E : Transfer Roller F : Heat Roller

7 - 1 7. WIRING DIAGRAM 7.1 (a)Interconnect Signal Diagram (OKIPAGE 4w Plus) 14 30 1 16 CN9 (Not Used) Main Control Board (HBMC-2 PCB) Power Supply Unit High-Voltage Power Supply Board CN4 (Parallel Interface) CN6 (LED Head) 13 29 2 17 36 18 19 1 1 STB-N 2 PDATA1-P 3 PDATA2-P 4 PDATA3-P 5 PDATA4-P 6...

7 - 3 7.2 PCB Layout 7.2.1 Main Control Board (HBMC-2 PCB) (OKIPAGE 4w Plus) Short Plug SP1 Plug Setting A External EPROM is valid. Mask ROM in the CPU is valid. B Content Remarks For a Chinese product and all maintenance parts. For all products except Chinese product. S W I 1 2

8 - 1 8. PARTS LIST Figure 8-1 Cover Assy Upper 6 5 4 1 2 3 *1

8 - 2 1 Upper Cover 1PP4128-1251P1 1 2 Lamp 3PP4128-1255P1 1 3 Guide Slide (L) 2PP4128-1256P1 1 4 Guide Slide (R) 2PP4128-1257P1 1 5 Spur Gear (A) 4PP4128-1260P1 1 6 Hopper Plate 40249301 1 Table 8-1 Cover Assy Upper No. Part Name Part No. Q'ty Remarks

8 - 3 Figure 8-2 Base Frame Unit e c X d f d T T g T U Z k [ Z \ Y ] b l V T R S Q P ^ a O N E 8 o 7 5 4 D 3 i C B A 3 M L I G 0 6 9 H F J K 1 2 L W

8 - 4 Table 8-2 Base Frame Unit No. Part Name Part No. Q'ty Remarks 1 Base Frame Assy 2PP4083-1502G1 1 2 High-Voltage Power Supply Board 4YA4130-1024G1 1 3 Paper Sensor E 3PP4083-1191P1 2 4 Friction Pad 4PB4083-1245P1 1 5 Separator Guide 3PP4083-1244P1 1 6 Compression Spring S 4PP4083-1246P1 1 7 Ton...

8 - 8 Figure 8-4 Base Plate Unit 7 7 7 7 3 4 2 6 1 8 9

8 - 9 1 Base Plate Assy 3PA4083-1135G1 1 2 Insulation Sheet 3PB4083-1251P1 1 3 Power Supply Unit 4YB4049-1853P1 1 120V Power Supply Unit 4YB4049-1854P1 1 230V 4 Main Control Board 4YA4121-2516G2 1 For OP4W Plus (HBMC-2 PCB) Without ROM Main Control Board 4YA4121-2516G3 1 For OP4m (HBMC-3 PCB) With M...

B - 2 (3) Parallel I/F signals Pin No. Signal Name Direction Function (Compatible Mode) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 19 30 31 32 33 34 35 36 DATA STROBE DATA BIT - 1 DATA BIT - 2 DATA BIT - 3 DATA BIT - 4 DATA BIT - 5 DATA BIT - 6 DATA BIT - 7 DATA BIT - 8 ACKNOWLEDGE BUSY PAPER END SEL...

C - 1 AppendixC Macintosh INTERFACE (OKIPAGE 4m) 1) Connector • Printer side : 8-pin mini DIN receptacle Type TCS7187-01-201 (made by HOSHIDEN) or equivalent • Cable side : 8-pin mini DIN plug Type TCP7180-01-110 (made by HOSHIDEN) or equivalent 2) Cable Apple system peripheral-8 cable (M0197 LL / B...

C - 2 (As viewed from the cable side) 8 7 6 5 4 3 2 1 5) Connector Pin Arrangement

D - 2 4. DETAIL OF EACH FUNCTION 4.1 Engine Menu Setting Engine Menu Setting is used to set, display, and change the following menu items: (See FigureD-1.) (1) Print Position Used to adjust the print start position. (2) LED Head Marking No. Used to adjust the exposure time of the LED head. (3) LED H...

D - 4 4.6 About About is used to display the following information: Engine maintenance utility version informationPrinter version information and memory size informationPrinter device ID information See figure D-4. 4.7 Reload Reload is used to reload menu setting values. 4.8 Exit Clicking the Exit b...