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OKIDATA Okipage 16n, Service Manual

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Troubleshooting

6 - 40

OKIPAGE 16n

Service Manual, P/N 59274401

6

Print voids

•

Is the contact plate of the transfer roller contacted with the power/sensor board properly?
(See Figure 6-5.)

•

No

Adjust the contact plate contact to contact the power/sensor board properly and
the shaft of the transfer roller.

▼

•

Yes

Replace the transfer roller.  (See 3.3.36.)

•

Has the trouble been removed.

• Yes

End

▼

•

No

Are the contacts of the toner supply roller, developing roller, image drum and
charging roller contacted with the contact assy properly?

(See Figure 6-5 

A

, 

B

, 

C

, 

D

, 

E

.)

•

No

Adjust the contacts to contact the contact assy properly.

▼

•

Yes

Replace the image drum cartridge.

•

Has the trouble been removed?

•

Yes

End

Note:

After replacing the image drum cartridge, set the printer in the user
maintenance mode by turning the power on while pressing the MENU
key, and reset the drum counter.   (Refer to User’s Manual.)

▼

•

No

Is the LED head installed properly?

(Check connector HEAD1(14p), HEAD2
(12p) on the Main board and PC Connector
on the LED head.)

•

No

Install the LED head properly.

▼

•

Yes

Replace the LED head or the head cable.

•

Has the trouble been removed?

•

Yes

End

Note:

After replacing the LED head, set the printer in the engine mainte-
nance mode by turning the power on while pressing  the FORM FEED
and ENTER keys. Set the LED head drive time.  (Refer to Section
4.2.)

▼

•

No

Replace the Main board or Power/sensor board.

Summary of Contents for Okipage 16n

Page 1: ...Thank You for purchasing this Factory Service Manual on EBAY from PCTECHINFO Click Here for more Factory Service Manuals for other Computer and Printer Copier Manufacturers from PCTECHINFO ...

Page 2: ...All specifications are subject to change without notice OKIPAGE 16n Service Manual P N 59274401 ...

Page 3: ...81 3 5445 6188 Revised by Okidata Training and Publications Contact Please address any comments on this publication to OKIDATA Training and Publications 532 Fellowship Road Mount Laurel NJ 08054 3499 Okilink Login Name Technical Training Internet Web Site okidata com Copyright Listing OKIDATA is a registered trademark of Oki America Inc OKIDATA est une marque déposée de Oki America Inc Adobe and P...

Page 4: ...tion 2 28 2 10 PostScript Board BOARD PSBA Optional 2 28 3 PARTS REPLACEMENT 3 1 3 1 Precautions for Parts Replacement 3 1 3 2 Parts Layout 3 3 3 3 How to Change Parts 3 7 3 3 1 Rear cover side cover L Assembly face up stacker Assembly and I F cover Assembly 3 8 3 3 2 Contact Assembly 3 9 3 3 3 DC fan motor 3 10 3 3 4 Manual feed hopper Assembly 3 11 3 3 5 Side cover R operator panel Assembly 3 12...

Page 5: ...When Replacing A Part 4 15 4 2 1 Setting of LED head drive time 4 15 4 2 2 Resetting the fuser counter 4 18 4 2 3 Destination setting 4 18 5 PERIODIC MAINTENANCE 1 5 1 Periodic Part Replacement 1 5 2 Cleaning 1 5 2 1 Cleaning of LED lens array 1 6 TROUBLESHOOTING PROCEDURES 6 1 6 1 Troubleshooting Tips 6 1 6 2 Points to Check before Correcting Image Problems 6 1 6 3 Tips for Correcting Image Probl...

Page 6: ...ignal Diagram 7 1 7 2 PCB Layout 7 2 7 3 Resistance Check 7 5 7 4 Program Font ROM Location 7 7 8 PARTS LIST 8 1 Printer Unit Figure 8 1 8 2 Main Chassis Unit Figure 8 2 1 of 2 8 4 Main Chassis Unit Figure 8 2 2 of 2 8 6 Front Feeder Unit Figure 8 3 8 8 Base Unit Figure 8 4 8 10 APPENDIX A CENTRONICS PARALLEL INTERFACE A 1 APPENDIX B HIGH CAPACITY SECOND PAPER FEEDER MAINTENANCE B 1 Preface B 1 1 ...

Page 7: ...eral Mechanism C 3 2 2 Hopper Mechanism C 4 3 Parts Replacement C 5 3 1 Precautions Concerning Parts Replacement C 5 3 2 Parts Layout C 7 3 3 Parts Replacement Methods C 8 3 3 1 Separator C 9 3 3 2 AOLE PCB C 10 3 3 3 Square shaped connector C 11 3 3 4 Hopping Motor C 12 3 3 5 Planet gear C 13 3 3 6 Roller B C 14 3 3 7 Roller A C 15 3 3 8 Mini pitch belt Feed roller C 16 4 Troubleshooting C 17 4 1...

Page 8: ...ce up stacker Power Sensor Board DC Fan Main control PC etc Centronics Parallel interface Bidirection OKI HSP interface board Option LAN etc Extension RAM Option Paper feeding Singal flow Consumables High Capacity Second Paper Feeder Option Multi Feeder Option Paper size detection switch Paper tray LED head Drum motor Registration motor Hopping motor Front Feeder Printer Mechanism I D unit AC IN 1...

Page 9: ... N 59274401 1 2 Printer Configuration The printer unit consists of the following hardware components Electrophotographic processor Paper feeder Controller Operator panel Power Supply board Figure 1 2 shows the printer unit configuration Figure 1 2 ...

Page 10: ... Service Manual P N 59274401 1 3 Optional Configuration The options below are available for use with OKIPAGE16n OKIPAGE16n PS They are sold separately from the printer unit 1 Multi Purpose Feeder 2 High Capacity Second Paper Feeder ...

Page 11: ...Configuration 1 4 OKIPAGE 16n Service Manual P N 59274401 3 RAM module 72 pin SIMM 1 MB 2 MB 4 MB 8 MB 16 MB 32 MB 16 MB RAM module 8 MB RAM module ...

Page 12: ...el Envelope OHP paper Transparency Size Standard sizes Letter Legal Executive Envelope A4 A5 B5 A6 Applicable sizes Width 3 4 to 8 5 86 to 216 mm Length 5 5 to 14 140 to 355 6 mm Thickness Automatic feed 16 to 28 lbs 60 to 105 g m2 Manual feed Label OHP paper transparency Envelope 6 Printing speed First print 10 sec Continuous print 16 sheets min Warm up time 90 sec at room temperature 77 F 25 C a...

Page 13: ...Image drum cartridge 30 000 at continuous printing 18 000 3 page job 11 000 1 page job Temperature 50 90 32 110 14 110 F In operation Power off mode During Storage Unit Maximum wet bulb temperature Minimum difference of wet and dry bulb temperatures Humidity 35 6 35 6 F 77 80 4 F 10 32 0 43 10 43 C 20 80 10 90 10 90 RH 25 26 8 C 2 2 C Notes 1 Storage conditions specified above apply to printers in...

Page 14: ... Standards 1 5 1 Certification Label The safety certification label is affixed to the printer in the position below 1 5 2 Warning Label The warning label is affixed to the portion which may cause bodily injury Follow the instructions on warning labels during maintenance ...

Page 15: ...Configuration 1 8 OKIPAGE 16n Service Manual P N 59274401 This page was intentionally left blank ...

Page 16: ... data through a host I F decodes and edits the data and stores the edited data in 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 the LED head in units of one dot line The electrophotographic process mechanism prints data on paper The operator panel is used for operations...

Page 17: ...l Board BOARD COM Parallel Interface 8V 8V Inlet sensor 1 Outlet sensor Inlet sensor 2 Paper sensor Paper out sensor Toner sensor AOLS Relay Drive Board AOLC PCB 5V High voltage generation circuit Cover open MS Low voltage generation circuit Filter circuit Power Sensor board Driver Charge roller Transfer roller Developing roller Toner supply roller Cleaning roller Thermistor Heat on Heat on TH1 TH...

Page 18: ...l EEPROM and options I O port Inputting outputting of sensor signal and motor signal Option I O interface Control of OKI HSP interface 2 1 Main Control Board BOARD COM ThecontrolboardconsistsofanonechipCPU LSIs program fontROM s DRAM s anEEPROM a host interface circuit and a mechanism driving circuit 1 One chip CPU The one chip CPU is a custom CPU 32 bit internal bus 32 bit external bus 32 MHz clo...

Page 19: ...ed as a peripheral device of the CPU and performs smoothing compensation OST of print image data In addition it transfers serially bit image data for each dot line to the LED head 6 Host interface This printer has the following interfaces to the host Centronics bidirectional parallel interface OKI HSP interface Option LocalTalk interface Option PostScript Version The single effective interface or ...

Page 20: ... transmits and receives 1 byte data using eight data signal leads under the semi duplex control by the host When the power is turned on the compatibility mode is automatically selected The change to another mode from the compatibility mode is made through negotiation WhentheBIDIRECTIONissettoENABLEinthemenu thischangecanbeperformed For the electrical physical characteristics of this interface see ...

Page 21: ...ription 2 6 OKIPAGE 16n Service Manual P N 59274401 7 RAM module Pin layout Basic specification Type 72 pins SIIM 32 bits buss width Access time 60ns 70ns 80ns 100ns Capacity 1 2 4 8 16 or 32MB Parity None 1 36 37 72 ...

Page 22: ...ng roller 2 2 Power Supply Board The power supply board consists of an AC filter circuit a low voltage power supply circuit a high voltage power supply circuit heater drive circuit and photosensors 1 Low voltage power supply circuit This circuit generates the following voltages 2 High voltage power supply circuit This circuit generates the following voltages necessary for electrophotographic proce...

Page 23: ... feeding opera tion Supervises the paper running state and the paper size accord ing to the paper reach time and running time Detects the form width Detects the leading part of the paper Supervises the paper running state Supervises the paper feed and size according to the time of arrival to the sensor and the time of passage of paper Detect the end of the paper Detects the lack of toner Sensing s...

Page 24: ...on 2 9 OKIPAGE 16n Service Manual P N 59274401 2 3 Relay Driver Board AOLC board This board relays signals between the Control board and the Power supply board and includes the registration motor and drum motor driver IC ...

Page 25: ... process mechanism This mechanism prints image data from the control board on the paper by electrophotographic process The Figure 2 4 shows the layout of the electrophotographic process mechanism Figure 2 4 Hopping Motor LED Head Fuser Face Up Stacker Drum Motor Image Drum Unit Registration Motor Hopping Roller Front Feeder ...

Page 26: ...pulse motor of 48 steps rotation that is two phase excited by the signal from the control board and is the main motor of this mechanism 5 LED head Image data for each dot line from the control board is received by the shift register and latch register The 4992 LEDs are driven to radiate the image data to the image drum 6 Fuser The fuser consists of a heater a heat roller a thermistor and a thermos...

Page 27: ...um it is attracted to the electrostatic latent image by static electricity making the image visible At the same time the residual toner on the image drum is attracted to the developing roller by static electricity 4 Transfer When paper is placed over the image drum surface and a positive charge opposite in polarity to the toner is applied to the reverse side of the paper from the transfer roller t...

Page 28: ...oller Power supply Bias voltage Doctor blade Transfer roller Paper registration Registration roller Paper supply Hopping roller Toner cartridge Power supply Paper eject Fusing Cleaning Transfer Image production developing Paper feed Paper hopping Path of paper feeding Direction of rotation of the image drum Transfer Charging Exposure Developing Cleaning Outlet sensor Inlet sensor Paper eject rolle...

Page 29: ...Operation Description 2 14 OKIPAGE 16n Service Manual P N 59274401 Figure 2 6 RMON N RMON N DMON N INSNS WRSNS OUTSNS LEDSTB IN Sensor OFF Paper Sensor OFF Feed Stop Out Sensor OFF Feed start ...

Page 30: ...g motor in the a direction drives the hopping roller of the first tray Turning the Hopping motor in the b direction drives the Hopping roller of the front feeder Both hopping gears contain one way bearings so that turning each of these gears in reverse direction will not be transmitted to the corresponding roller Hopping Motor a b Registration Roller One way Clutch Gear A Hopping Roller First Tray...

Page 31: ...r turns on At the same time the one way clutch gear B also rotates However the hopping roller of the front feeder will not rotate due to the one way bearing 2 After turning on the inlet sensor the paper advances further by a predetermined length until it hits the registration roller The skew of the paper can thus be corrected One way Clutch Gear B a Hopping Roller Front feeder Paper Hopping Roller...

Page 32: ...roller shaft These cams push down the front feeder plate when the hopping operation is not performed so as to facilitate the setting of paper into the tray A microswitch is provided under the front feeder plate to detect that the front feeder plate is at the lower position When the front feeder plate is at the lower position this microswitch causes the motor to stop 2 After turning on the inlet se...

Page 33: ...g Roller 2 Feeding After the end of hopping the pulse motor dedicated for driving the registration roller rotates to drive the registration roller The driven registration roller advances the paper until it comes out of the registration roller When the leading edge of the paper causes the paper sensor to turn on the printing is started synchronously ...

Page 34: ...e image drum surface Image drum Charge roller Power supply 4 Exposure Light emitted from the LED head irradiates the image drum surface with negative charges The surface potential of the irradiated part of the image drum drops thereby forming an electrostatic latent image associated with the image signal Paper Image drum LED head Image drum Charge roller LED head Power supply ...

Page 35: ...rated between the developing roller and the toner allowing the toner to be attracted to the developing roller The developing roller surface is charged positive and the toner negative 2 The toner attracted to the developing roller is scraped off by the doctor blade forming a thin coat of toner on the developing roller surface 3 Toner is attracted to the exposed part low potential part of the image ...

Page 36: ...oner is applied to the paper from its reverse side The application of a high positive voltage from the power supply to the transfer roller causes the positive charge induced to the transfer roller surface to be transferred to the paper at the contact between the transfer roller and the paper As a results toner charged negative that is attracted to the image drum surface is transferred to the upper...

Page 37: ...s a 400W heater Halogen lamp which heats the heat roller A thermistor which is in contact with the heater roller regulates the heater roller at a predetermined temperature about 185 188 C A safety thermostat cuts off voltage supply to the heater by opening the thermostat in the event of abnormal temperature rises The backup roller is held under a pressure of 2 5 kg from the pressure spring at each...

Page 38: ...oller Image Drum Cleaning Roller Power Supply 9 Cleaning of rollers The charge roller transfer roller and cleaning roller are cleaned in the following cases In warming up at power on time In warming up after the cover is opened and closed When the number of accumulated sheets is 10 or more and the printout operation ends Changes in bias voltage applied to each roller move adhesive toner from the r...

Page 39: ...not pass over the outlet sensor within a predetermined time after the leading part of the paper has reached the outlet sensor The paper size check with the manual feed specified considers the reference size as free size Paper size error The size of the paper is supervised by the inlet sensors 1 It is detected that the paper does not pass over the inlet sensor 1 within predetermined range of distan...

Page 40: ...oswitch on the power supply board is turned off to cut the supply of 30V to the high voltage power supply circuit As a result all high voltage outputs are interrupted At the same time the CVOPN signal is sent to the control board to notify it of the off state of the microswitch and the control board performs the cover open processing ...

Page 41: ...ed in the toner the stirring bar is pushed by the stirring gear Operation during toner low state When the stirring bar reaches the maximum height since there is no resistance provided by the toner on the other side it falls to the minimum height due to its own weight Be cause of this the time interval during which it encounters the magnet of the sensor lever becomes long By monitoring this time in...

Page 42: ...98 4 When the toner low state is detected 2 times consecutively Toner Low is established When the toner full state is detected 2 times consecutively Toner Low is cancelled When there is no change with the toner sensor for 2 cycles 3 398 sec x 2 or more then the Toner Sensor Alarm is activated The toner sensor is not monitored while the drum motor is stopped ...

Page 43: ...paper size 2 10 PostScript Board BOARD PSBA Optional The PostScript board consists of program font ROM s an EEPROM and a LocalTalk interface control circuit 1 Program font ROM s The program font ROM s store the PostScript Level II program and its fonts MASK ROM is used as the program font ROM s 2 EEPROM The EEPROM has a 4 kbit capacity and stores the PostScript s menu settings 3 LocalTalk interfac...

Page 44: ... Reconnect the printer in the following procedure i Connect the AC cable and interface cable to the printer ii Connect the AC inlet plug to the AC receptacle iii Turn on l the power switch of the printer OFF ON Disconnect Connect 2 Do not try disassembly as long as the printer is operating normally 3 Do not remove unnecessary parts try to keep disassembly to a minimum 4 Use specified service tools...

Page 45: ... 3 1 Service Tools No No 1 100 Philips screwdriver Q ty Place of use Remarks Service Tools 1 2 3 4 5 6 8 9 No 2 200 Philips screwdriver Magnetized No 3 100 screwdriver No 5 200 screwdriver Digital multimeter Pliers Handy cleaner LED Head cleaner 1 1 1 1 1 1 1 1 2 2 5 mm screws 3 5 mm screws Cleans LED head 7 1 Disconnector for Jack in connector Disconnect Jack in connector ...

Page 46: ...Parts Replacement 3 3 OKIPAGE 16n Service Manual P N 59274401 Figure 3 1 3 2 Parts Layout ...

Page 47: ...Parts Replacement 3 4 OKIPAGE 16n Service Manual P N 59274401 Figure 3 2 ...

Page 48: ...Parts Replacement 3 5 OKIPAGE 16n Service Manual P N 59274401 Figure 3 3 Paper supply guide A Hopping motor Earth plate Earth plate Earth plate Paper supply guide C Paper supply guide B FF roller ...

Page 49: ...Parts Replacement 3 6 OKIPAGE 16n Service Manual P N 59274401 Figure 3 4 Relay Drive board AOLC PCB Power Supply Board AOLS PCB Guide rail R assy Guide rail L assy Insulator ...

Page 50: ... 3 7 Damper Stacker full sensor Cable cover Eject roller Paper supply guide D Main chassis unit 3 3 8 3 3 9 3 3 10 3 3 11 3 3 12 3 3 17 Separator F Front feeder roller assy Hopping motor Front feeder paper end sensor Registration roller Drum motor Idle gear Fusing assy Fuser Pressure roller EP lock shaft Hopping roller assy Outlet sensor lever Toner sensor lever Paper sensor lever Insensor lever S...

Page 51: ... the face up stacker Assembly 8 Disconnect the engagement at the left and right protrusions 8A Remove the face up stacker Assembly 8 Flex the Assembly 8 in the middle to disengage 8A from the Rear cover 0 4 Open the stacker cover 2 and the manual feed hopper Assembly3 Remove three screws 4 Remove the side cover L Assembly 5 5 Remove two screws 6 Remove the I F cover Assembly 7 6 Remove two screws ...

Page 52: ...t 2 Remove the side cover L Assembly see 3 3 1 1 to 4 3 Remove two screws 1 Remove the contact plate cover 2 and the contact Assembly 3 Pull bottom of Assembly 3 out first then the top of Assembly Remove fan connector cables from location 4 Caution Be careful not to deform the electrodes of the contact Assembly when removing the contact Assembly 1 2 4 1 3 ...

Page 53: ...ce Manual P N 59274401 3 3 3 DC fan motor 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the side cover L Assembly see 3 3 1 1 to 4 3 Unplug the connector of the DC fan motor 1 and remove the DC fan motor 1 1 ...

Page 54: ...opper Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Open manual feed hopper Assembly 1 Disengage the lower portion of this Assembly 3 Hold manual feed hopper Assembly 1 vertically and remove the left and right levers 2 with a downward motion 1 2 2 ...

Page 55: ...wer cord from the outlet 2 Remove interface cable 1 3 Open stacker cover 2 Remove two screws 3 Remove I F cover Assembly 4 4 Remove two screws 5 and flexible cable 6 use care to not damage flexible cable Remove operator panel Assembly 7 5 Open manual feed hopper Assembly 8 Remove three screws 9 and then remove side cover R 10 6 7 3 3 5 5 10 1 2 8 9 9 4 ...

Page 56: ...rd from the outlet 2 Remove side cover R see 3 3 5 3 Remove a screw 1 Remove BOARD PSBA 2 OKIPAGE16n PS only 4 Remove five screws 3 and seven connectors 4 Remove BOARD COM 5 5 Remove two screws 6 Remove IC card cover 7 6 Remove four screws 8 Remove side plate R 9 by pulling up and out on top part of plate 7 Remove the claws and then remove Earth plate BK R 10 ...

Page 57: ...utlet 2 Remove the rear cover see 3 3 1 3 Remove the side cover R see 3 3 5 4 Remove the side plate R see 3 3 6 1 to 6 5 Disconnect the engagement of backup release lever 1 with the protrusion on the light side surface on the right side of the stacker cover 6 Remove screw 2 and washer 3 Remove two claws Remove stacker cover Assembly 4 at this time the damper arm 5 is also removed ...

Page 58: ...r 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the damper arm see 3 3 7 3 Remove two screws 1 and then remove two dampers 2 1 2 2 1 When replacing damper be sure elongated hole is to rear of printer This hole is elongated This hole is round ...

Page 59: ...itch off Unplug the AC power cord from the outlet 2 Remove the stacker cover Assembly see 3 3 7 3 Remove four screw 1 Remove stacker mount 2 by releasing the tabs at position 2A 4 Remove stacker full sensor Assembly 3 by releasing spreading the plastic tabs on each side of sensor Assembly 3 and lifting switch from cover ...

Page 60: ... B 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the stacker cover Assembly see 3 3 7 3 Remove two screws 1 release tabs at position 1A Remove cable cover 2 cable guide A 3 Note Use care when replacing cable cover Do not pinch crimp or cut cables or protective sheet ...

Page 61: ...ch off Unplug the AC power cord from the outlet 2 Remove the rear cover se 3 3 1 3 Remove the side cover R see 3 3 5 4 Remove the side plate R see 3 3 6 1 to 6 5 Remove the stacker cover Assembly see 3 3 7 6 Release the latch on the right side of eject roller Assembly 1 Lift up and remove the eject roller Assembly 1 ...

Page 62: ...switch off Unplug the AC power cord from the outlet 2 Remove the side cover R see 3 3 5 3 Remove five screws 1 Lift up and remove front feeder roller Assembly 2 4 Lift up and remove paper supply guide D 3 At this time two bias rollers 4 and bias spring 5 are also removed Be careful not to lose them 1 3 1 1 2 4 5 ...

Page 63: ...ector 6 8 Turn idle gear 8 in the direction of arrow A until front feeder plate 9 is elevated 9 Remove front feeder gear and then remove two springs F A Be careful not to lose the springs 10 Remove four screws B and then remove paper supply guide A C At this time front feeder earth plate D G H are also removed 11 Remove front feeder plate 9 by releasing the engagement at two parts 9A Switch Assemb...

Page 64: ...Parts Replacement 3 21 OKIPAGE 16n Service Manual P N 59274401 A H 9 7 F E C A G B B B D 8 B 6 1 4 3 1 2 A 5 15A 9A 9A ...

Page 65: ...nd spring 4 At this time knock pin 5 and bearing F 6 are also removed Be careful not to lose them Do not mix these parts with those from the left side of Assy 7 Pull out the front feeder shaft 7 toward the left and then remove front feeder roller Assy 8 8 Remove knock pin 9 and then remove front feeder cam on the left L side release lever L A and spring B At this time the bearing F C on the left L...

Page 66: ...3 3 5 4 Remove the front feeder Assembly see 3 3 12 1 to 3 5 Remove the inner cover and square shaped connector see 3 3 13 5 and 6 6 Using a dedicated tool remove the connector of hopping motor 1 from the square shaped connector 7 Remove the paper supply guide A see 3 3 13 7 to 10 8 Remove the lever R see 3 3 10 6 9 Remove two screws 2 and then remove side plate R Assembly 3 10 Remove two screws 4...

Page 67: ...Parts Replacement 3 24 OKIPAGE 16n Service Manual P N 59274401 This page was intentionally left blank ...

Page 68: ...5 Remove the side plate R Assembly see 3 3 15 1 to 9 6 Using a dedicated tool remove the connector of front feeder paper end sensor 1 from the square shaped connector 7 Remove two screws 2 and then remove paper supply guide C 3 8 Remove paper supply guide B 4 9 Remove four claws and then remove front feeder paper end sensor 1 10 Remove two screws 5 and then remove square shaped connector 6 from pa...

Page 69: ...over Assembly see 3 3 7 7 Remove the front feeder roller Assembly see 3 3 12 1 to 3 At this time it is not required to remove the manual feed hopper Assembly 8 Remove the earth plate HP 9 Lift gear TR 1 to unlock it Remove gear TR 1 and transfer roller 2 At this time two bearings TR 3 and two transfer springs 4 are also removed Do not lose bearings or springs 10 Remove connector cover 5 in directi...

Page 70: ...Parts Replacement 3 27 OKIPAGE 16n Service Manual P N 59274401 A 9 8 6 7 5 1 3 4 2 3 4 ...

Page 71: ...Parts Replacement 3 28 OKIPAGE 16n Service Manual P N 59274401 This page was intentionally left blank ...

Page 72: ...ront feeder roller Assembly see 3 3 12 1 to 3 3 Remove four screws 1 Lift and remove the registration roller Assembly 2 left side first then right side 4 Release the latch and remove registration roller gear 3 and pressure roller gear 4 5 Remove left and right side registration roller bearing Assemblys 5 and then remove resist roller 6 and pressure roller 7 1 6 2 7 5 4 3 1 5 ...

Page 73: ...sembly 5 Release the latch of fuser pressure roller release lever 1 and pull out it toward the right At this time idle gear H 2 is also removed 6 Remove spring 3 and then remove pressure release lever 4 Be careful do not lose or damage spring 7 Remove EP lock spring 5 and then remove ED lock lever 6 8 Release two latches and remove motor Assembly 7 9 Remove two screws 8 and then remove drum motor ...

Page 74: ...Parts Replacement 3 31 OKIPAGE 16n Service Manual P N 59274401 9 8 8 5 3 4 6 2 1 A 7 ...

Page 75: ... Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 3 Remove the motor Assembly see 3 3 19 1 to 8 4 Remove three screws 1 and then remove motor bracket B 2 5 Remove idler gear E 3 idle gear D 4 idle gear B 5 idle gear C 6 idle gear A 7 and two resist idle gears 8 1 7 8 5 6 4 3 2 ...

Page 76: ...al P N 59274401 3 3 21 Fusing Assembly 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the side cover L Assembly see 3 3 1 1 to 3 3 Unplug connector 1 4 Remove four screws 2 and then remove fusing Assembly 3 2 3 2 1 ...

Page 77: ... fusing Assembly see 3 3 21 4 Remove the fuser pressure roller release lever see 3 3 19 5 5 Remove two screws 2 and release three locks on the fusing guide Remove the fusing guide 1 by pushing it upward from the lower side 6 Release the engagement with earth plate L BK 3 Lift and remove fuser pressure roller 4 At this time two fuser pressure roller bearings 5 and two bias springs 6 are also remove...

Page 78: ...er switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 3 Remove screw 1 Turn EP lock level L Assembly 2 in the direction of arrow A 4 Remove spring 3 5 Drop EP lock shaft 4 down and turn in the direction of arrows B and remove it 3 4 2 1 A Spring located here B ...

Page 79: ...e the latch Remove hopping roller gear 1 and bearing P 2 Then remove idle gear HF 3 4 Remove the left side of hopping roller shaft 4 from the groove Pull out hopping roller shaft 4 and hopping roller Assembly 5 toward the left 5 Release the latch and remove bearing L 6 6 Release the latch and remove hopping roller Assembly 5 At this time knock pin 7 is also removed Be careful not to lose the knock...

Page 80: ... 3 25 Outlet sensor lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 3 Press the clamp part of outlet sensor lever 1 Remove the outlet sensor lever 1 by pushing it upward from the lower side 1 1 ...

Page 81: ... 3 26 Toner sensor lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 3 Squeeze the clamp part of toner sensor lever 1 and remove the toner sensor lever 1 by pushing it upward from the lower side 1 ...

Page 82: ... 2 27 Paper sensor lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 3 Squeeze the clamp part of the paper sensor lever 1 Remove the paper sensor lever 1 by pushing it upward from the lower side 1 ...

Page 83: ...Parts Replacement 3 40 OKIPAGE 16n Service Manual P N 59274401 This page was intentionally left blank ...

Page 84: ...274401 3 3 28 Inlet sensor lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 3 Squeeze the clamp part of two inlet sensor levers 1 Remove the inlet sensor levers 1 by pushing them downward ...

Page 85: ...Remove the main chassis unit see 3 3 17 3 Remove two screws 1 and then remove inlet holder 2 At this time remove inlet 3 from inlet holder 2 4 Remove eight screws 4 connector 5 and two screws 6 Remove Power Supply Board 7 together with AOLC PCB 8 5 Unplug connector 9 and remove PowerSupply Board 7 6 Remove insulator 10 Caution Be careful not to deform the paper end lever A ...

Page 86: ...Parts Replacement 3 43 OKIPAGE 16n Service Manual P N 59274401 1 10 A 1 7 4 4 4 9 8 6 5 6 4 4 4 3 4 2 ...

Page 87: ...Parts Replacement 3 44 OKIPAGE 16n Service Manual P N 59274401 This page was intentionally left blank ...

Page 88: ...KIPAGE 16n Service Manual P N 59274401 3 3 30 Paper end lever 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove the main chassis unit see 3 3 17 3 Release the lock and remove paper end lever 1 1 ...

Page 89: ...3 17 3 Remove the insulator see 3 3 29 4 Remove screw 1 and then remove base plate 2 5 Remove two screws 3 and then remove guide rail L Assembly 4 6 Remove cassette lock spring 5 and then remove bias link 6 and pull block 7 Pay attention the direction of hook of cassette lock spring 5 7 Remove spring 8 and then remove cassette stopper 9 8 Remove screw 0 from bias link 6 and then remove link suppor...

Page 90: ...Parts Replacement 3 47 OKIPAGE 16n Service Manual P N 59274401 4 8 9 7 5 6 A 2 1 3 3 ...

Page 91: ...y 4 6 Removecassettelockspring5andthenremovebiaslink6andpullblock7 Atthistime earth plate 8 is also removed Pay attention the direction of hook of cassette lock spring 5 7 Remove spring 9 and then remove cassette stopper 8 Remove screw A and then remove detector spring B 9 Remove screw C and then remove AOLS PCB D 10 Remove screws E from bias link 6 and then remove link support F 11 Remove two scr...

Page 92: ...Parts Replacement 3 49 OKIPAGE 16n Service Manual P N 59274401 1 9 D 7 5 6 8 F I H B 2 C E 3 4 3 G A ...

Page 93: ...PAGE 16n Service Manual P N 59274401 3 3 33 Cover Frame 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Remove interface cable 1 3 Open stacker cover 2 Remove two screws 3 and then remove Cover Frame 4 ...

Page 94: ...ff Unplug the AC power cord from the outlet 2 Open stacker cover 1 3 Remove PC connectors 2 and two LED cables 3 from LED head 4 4 Push the hook on the left side of stacker cover 1 in the direction of arrow and remove LED head 4 Take care not to lose head springs 5 5 Pull out the head spring 5 from the post ...

Page 95: ... 1 Turn the AC power switch off Unplug the AC power cord from the outlet 2 Pull out the paper cassette Assembly 1 from the printer 3 Release two locks and remove separator Assembly 2 At this time leaf spring 3 and coil spring 4 are also removed Be careful not to lose these springs 3 2 4 1 ...

Page 96: ...wer cord from the outlet 2 Open stacker cover 1 3 Lift the left side of the gear TR 2 and release the lock Remove gear TR 2 and transfer roller 3 At this time two bearings TR 4 and two transfer roller springs 5 are also removed 4 Remove diselectrification bar 6 and diselectrification film 7 from the chassis unit 5 4 2 6 5 4 7 3 7 6 1 ...

Page 97: ...Parts Replacement 3 54 OKIPAGE 16n Service Manual P N 59274401 This page was intentionally left blank ...

Page 98: ...sary when replacing a part Adjustment is made by changing a parameter value set in EEPROM on the controller PCB A parameter is set with the key operation on the operator panel This printer has three kinds of maintenance modes It is required to select one of the maintenance modes necessary when replacing a part ...

Page 99: ...erator panel menu disable X adjust Y adjust Setting System maintenance mode Note This mode is used only by service persons and it should not be released to the end users To enter the system maintenance mode turn on the POWER switch while pressing the RECOVER key Function There are 8 functions as follows Page count display Page count printing enable disable Rolling ASCII continuous printing EEPROM ...

Page 100: ...s as follows Head drive time setting Setting of Head drive timing compensation while OST is on Compensated head type setting Printing start position setting Drum counter total display Drum count display Setting of standard paper feed length Setting of front feeder paper feed length Setting of second tray paper feed length Selection of second tray feeder download table Setting of envelope feeder pa...

Page 101: ...the ON LINE key Automatic activation of printing even when the received data is less than one page by selecting the Auto Eject function on the menu Exit from this mode by turning the power OFF 3 Drum counter reset This function resets the drum life data when the user replaces the image drum unit The operation mode starts automatically upon completion of resetting 4 Operator panel menu disable This...

Page 102: ...essing Menu key Power ON End of processing is performed by the power supply OFF 0 mm 0 25 mm 0 75 mm 1 00 mm 1 25 mm 1 50 mm 1 75 mm 2 00 mm 2 00 mm 1 75 mm 0 25 mm X ADJUST 0 mm Press the Menu key Press the or key 0 mm 0 25 mm 0 75 mm 1 00 mm 1 25 mm 1 50 mm 1 75 mm 2 00 mm 2 00 mm 1 75 mm 0 25 mm Y ADJUST 0 mm Press the Menu key Press the or key INITIALIZING ON LINE Press the ON LINE key Writing...

Page 103: ...Adjustment 4 6 OKIPAGE 16n Service Manual P N 59274401 This page was intentionally left blank ...

Page 104: ...ual P N 59274401 4 1 2 System maintenance mode ThesystemmaintenancemodeissetwhenthepoweristurnedONwhilepressingtheRecover key This mode adopts the menu for function selection The system maintenance mode is provided with the listed functions ...

Page 105: ...de 4 EEPROM reset All EEPROM areas including Menu level 2 are set to the factory default values The following items are excluded Head drive time setting Fine adjustment of printing start position Standard tray paper feed amount setting Transition to the operation mode occurs upon completion of resetting Press the Menu key to update each category The operation returns to the first category after up...

Page 106: ...e Menu key Press the Enter key Press the Enter key After the end of processing PAGE CNT nnnnnn Press the Menu key Writing into the EEPROM is performed when the Enter key is pressed Press the or key Press the Menu key RECOVER key Power ON STOP HSP ERR RECOVER HSP ERR CNT nnn Press the or key DISABLE SIDM ENABLE Press the or key HSP ERR RESET NG HSP ERR CNT RST Press the Enter key Press the ON LINE ...

Page 107: ...ion sets type of the compensated head 4 Printing start position setting Sets the printing start position 5 Drum count total display Displays on the LCD the total number of drum revolutions in the unit counted at the engine 6 Drum count display Displays on the LCD the total number of EP drum revolutions counted at the engine 7 Setting of standard tray paper feed length This function sets the paper ...

Page 108: ...reset When the fuser unit is replaced the maintenance person uses this fuser count reset function to reset the fuser lifetime Afterthefusercounterisreset theengineentersintotheoperationmodeautomatically 15 Engine reset All EEPROM areas used by the engine are reset to the factory default values The following items are excluded Menu level 1 Menu level 2 Operator panel menu disable enable Page print ...

Page 109: ...ey FORM FEED Power ON HEADTYPE TYPE 1 Press the Menu key Press the or key 0 mm 0 5 mm 3 5 mm 4 0 mm 0 5 mm Writing into the EEPROM is performed when the Enter key is pressed 0 5 mm intervals PRINTPOS 0 mm Press the Menu key Press the or key Press the Menu key TYPE 1 TYPE2D4 TYPE2D2 DRUM CNT T nnnnnn Press the Menu key DRUM CNT nnnnnn Press the Menu key Press the Menu key Writing into the EEPROM is...

Page 110: ... Menu key Press the or key FUSR CNT nnnnnn Press the Menu key INITIALIZING ON LINE XXX Writing into the EEPROM is performed when the Enter key is pressed Writing into the EEPROM is performed when the Enter key is pressed Writing into the EEPROM is performed when the Enter key is pressed Press the ON LINE key FUSR CNT RESET NG ON LINE Upon completion of processing Press the Enter key 0 mm 1 mm 7 mm...

Page 111: ...r system maintenance Engine resetting for engine maintenance Firmware revision check error LCD display EEPROM RESETTING This intialization occurs when the existing ROM is replaced by a ROM whose revision No is different from the existing ROM Engine revision error LCD display ENGINE RESET Engine ID error LCD display ENGINE RESET Setting of data for destination User information error LCD display EEP...

Page 112: ...nter Refer to Chapter 4 2 2 EEPROM Set the LED head drive time Refer to Chapter 4 2 1 4 2 Adjustment When Replacing A Part Adjustment becomes necessary when replacing one of the following parts 4 2 1 Setting of LED head drive time Note When the luminous intensity marking of the replaced LED head new part is the same as that of the used LED head old part do not set the LED head drive time Luminous ...

Page 113: ...74 0 79 10 0 36 0 37 21 0 80 0 84 9 0 38 0 40 20 0 85 0 90 8 0 41 0 43 19 0 91 0 96 7 0 44 0 46 18 0 97 1 03 6 0 47 0 49 17 1 04 1 10 5 0 50 0 52 16 1 11 1 18 4 0 53 0 57 15 1 19 1 26 3 0 58 0 60 14 1 27 1 35 2 Setting of LED head drive time Drive time of the LED head is to set parameter of drive time setting values corresponding to the lumious intensity displays marked on the LED head to EEPROM a...

Page 114: ...ter 14 is set to EEPROM is displayed on LCD LED HEAD No 14 LED HEAD No 14 Press ENTER key Press the ON LINE key After initializing process is completed the printer enters into the operation mode and the setting operation is finished Do not turn the power off until the printer enters into the on line state OST AJST No 0 Press MENU key HEADTYPE TYPE 1 Press MENU key b Setting Example Setting method ...

Page 115: ...L MENU OKI INT A MENU PAPER SIZE Australia etc OKI INT L MENU TRAY TYPE Singapore etc LCD display ENG MNT FUSER COUNT RESET Operation With the ENTER and FORM FEED keys pressed turn the printer power on Press the MENU key 15 times Press the ENTER key to reset the fuser count After the initializing process is completed the printer enters into the operation mode 4 2 2 Resetting the fuser counter 1 Th...

Page 116: ...Cleaning Remove any toner and dust Clean inside and around the printer with a piece of cloth when necessary Use the handy cleaner VACCUM for cleaning the printers interior Note Do not touch image drum LED lens array and LED head connector block 5 2 1 Cleaning of LED lens array Clean the LED lens array or replace the toner cartridge when white lines or stripes void light printing are generated vert...

Page 117: ...Periodic Maintenance 5 2 OKIPAGE 16n Service Manual P N 59274401 This page was intentionally left blank ...

Page 118: ...Is the printer being run in proper ambient conditions 2 Have the supplies toner and the routine replacement part image drum cartridge been replaced properly 3 Is the paper normal See paper specifications section 4 Has the image drum cartridge been loaded properly 6 3 Tips for Correcting Image Problems 1 Do not touch or bring foreign matter into contact with the surface of the image drum 2 Do not e...

Page 119: ...ssage list See 6 5 1 6 4 Preparation for Troubleshooting Operator Panel Display The failure status of this printer is displayed on the liquid crystal display LCD in the operator panel Take proper corrective action as directed by messages that are displayed on the LCD 6 5 Troubleshooting Flow If trouble should develop in this printer troubleshoot based on the following procedure flow 6 5 1 LCD Stat...

Page 120: ...ne mode xxx Emulation in use HP4 PS HEX AUT tttttt Tray being selected TRAY 1 TRAY 2 FRONT MANUAL FEEDER mmmmmmmmm Paper size in the tray being selected LETTER EXECUTIVE LEGAL 14 LEGAL 13 A4 SIZE A5 SIZE A6 SIZE B5 SIZE COM 10 MONARCH COM 9 DL ENV C5 ENV C4 ENV The printer is in the off line mode The data remains unprinted in the buffer Data On The printer is in the on line mode Data Flash The pri...

Page 121: ...he data that remains unprinted in the buffer is deleted and the printer is initialized to the user default settings The temporary DLL Macro and User pattern are deleted The printer is processing data and can not go to off line OKIPAGE16n PS only READY MANFEED ATTENTION DATA POWER SAVING PRINTING Daily status READY MANFEED ATTENTION DATA TONER SENSOR READY MANFEED ATTENTION DATA TONER LOW RESET REA...

Page 122: ...ing printed Ready ON Executed by command entry Ready flashing Executed by key operation The demo page is being printed Ready ON Executed by command entry Ready flashing Executed by key The current menu setting is being printed Ready ON Executed by command entry Ready flashing Executed by key operation The drum count is near end of life This message is displayed in combination with other message in...

Page 123: ...quested paper in the manual feeder and press the Form Feed button The fuser is nearing end of life This message is displayed in combination with other message indicated on the first line Normal operation can be continued When the number of copies being printed is two or more the number of copies being printed is displayed The face down stacker is full of paper Manual loading of paper indicated by ...

Page 124: ...open close operation the toner cartridge should be replaced Loading of paper indicated by the first line message is requested Either there is no paper tray or the tray has run out of paper tttttt Tray being selected TRAY1 TRAY2 FRONT MANUAL FEEDER Indicates that A6 size paper can not be used with the second paper tray A6 size paper shall be used with the first paper tray or with the front feeder D...

Page 125: ...on completion of resetting Indicates that an error critical failure occurred with OKI HSI I F Continues the operation when RECOVER key is pressed xx 10 I F time out 20 other error Install the first paper tray Press the RECOVER key on the operator panel to release the error display Install an expansion optional RAM or reduce the amount of print data Press the RECOVER key on the operator panel to re...

Page 126: ... ATTENTION DATA PAPER EXIT JAM REMOVE THE PAPER Check the paper in the tray or check to see if more than one sheet was fed simultaneously Open the cover then close it to perform recovery printing and the error display is released If this error occurs frequently see chapter 6 5 2 Check the paper in the cassette Open the cover then close it to perform recovery printing and the error display is relea...

Page 127: ...DATA EEPROM RESETTING Menu operation The upper cover was opened An error was detected by EEPROM ID No check Normal operation in menu mode Close the cover to release the error display If the display does not change after the cover is closed check for correct operation of cover open switch and lever Replace the Power sensor board It displays the message for a few seconds It resets the EEPROM to the ...

Page 128: ...te When replacing the Main board install the EEPROM mounted on the replaced Main board Replace the EEPROM Location Q12 Replace the Main board BOARD COM Replace the optional software ROM Location BOARD COM 02C 02D Replace the PostScript board BOARD PSBA Check the optional RAM for proper connection Replace the optional RAM A fault occurred in the printer Turn the power off then on to release the err...

Page 129: ...e optional tray 2nd tray envelope feeder etc 90 A watchdog timer timeout occurred F0 Monitor error double weight F1 Monitor error argument error F2 Optional timeout error F3 Optional status error F4 BG program error F5 System timer program error F6 IPT2 program error Controller error Remedy Connect the fan motor cable properly Replace the fan motor Replace the Power sensor board See chapter 6 5 2 ...

Page 130: ...ore instruction 6 Bus Error Exception Instruction Fetch 7 Bus Error Exception Load instruction store instruction 8 System Call Exception 9 Breakpoint Exception A Reserved Instruction Exception B Coprocessor Unusable Exception C Arithmetic Overflow Exception Processor error READY MANFEED ATTENTION DATA ERROR CONTROLLER On aaaaaaaa Exception Error code Turn the power off then on Replace the Main boa...

Page 131: ...Troubleshooting 6 14 OKIPAGE 16n Service Manual P N 59274401 This page was intentionally left blank ...

Page 132: ...Paper feed jam 2 3 Paper exit jam 2 4 3 Paper size error 3 4 Fusing unit error 4 5 SSIO Synchronous Serial I O error 9 between the Main board and the Power sensor board 6 I F time out between the printer and the operator panel 6 7 I F time out no response between the printer and an 5 optional tray High Capacity Second Paper Feeder Power envelope feeder 8 Messages cannot be received through the par...

Page 133: ...tch to the ON position Measure the resistance between L and N pins of the AC inlet using a multimeter Is there continuity between L and N pins normal resis tance 554 kΩ For measuring points see Fig 6 2 No Replace the fuse F1 or the Power sensor board Yes Are POWER connector of the Main board and CN9 connector on the Driver board connected properly Are CN8 connector on the Driver board and CN3 conn...

Page 134: ...cable defective Yes Replace the connecting cable No Replace the operator panel assembly Is the printer recovered No Replace the Main board YES END Yes Is message shown in the LCD display No Replace the Control board YES message shown in the LCD display No Take the proper action following the message shown in the LCD display For details see the chapter 6 5 1 LCD STATUS message trouble list YES END ...

Page 135: ...leshooting 6 18 OKIPAGE 16n Service Manual P N 59274401 Fig 6 1 Connector and Pin Location INLET L3 SW1 L4 L N FG Z1 R1 C1 C2 C3 F1 Fig 6 2 Measurement by a Multimeter Main control board BOARD COM FRONT CN9 ...

Page 136: ...Troubleshooting 6 19 OKIPAGE 16n Service Manual P N 59274401 Fig 6 3 Connector and Pin Location Power Sensor board CN3 23 1 24 2 ...

Page 137: ...r operate smoothly No Replace the inlet sensor lever Yes Clean the inlet sensor on the Power sensor board or replace the Power sensor board See Fig 2 3 Sensor Layout Diagram No Replace the hopping roller assembly or paper cassette assembly No Is the hopping roller rotating Yes Set the paper cassette properly No Is the hopping motor rotating Yes Replace the hopping roller gear one way or idle gear ...

Page 138: ... Power sensor board See Fig 2 3 Sensor Layout Diagram No Does a jam error occur after paper feeding Yes Is the paper fed on the inlet sensor lever Yes Go to A No Go to B No Does the front feeder paper sensor lever operate smoothly No Replace the lever of the front feeder paper sensor Yes Clean the front feeder paper sensor Is the printer recovered YES END No Replace the front feeder paper sensor a...

Page 139: ...or rotating No Is there any defective gear in the motor bracket assembly Yes Replace the defective gear No Are the connections for CN3 connector on the Power sensor board between CN8 and CN7 connectors on the Control board and registra tion motor and for POWER connector and FRONT connector white 9 pin or 7 pin connector made properly No Connect these connectors properly If a defective cable is fou...

Page 140: ...nsor board See Fig 2 3 Sensor Layout Diagram Is the printer recovered No Replace the Power sensor board YES END No Is the drum motor rotating No Is there any defective gear in the motor bracket assembly Yes Replace the defective gear No Are the connections for CN3 connector on the Power sensor board between CN8 and CN6 connectors and drum motor and for POWER connector and FRONT connector white 9 p...

Page 141: ...eplace the transfer roller Yes Is the fuser unit installed properly No Install the fuser unit properly Yes Is the image drum cartridge set properly No Set the image drum cartridge properly Yes Does the paper sensor lever operate smoothly No Replace the paper sensor lever Yes Clean the paper sensor on the Power sensor board See Fig 2 3 Sensor Layout Diagram Is the printer recovered No Replace the P...

Page 142: ...let sensor lever Yes Clean the outlet sensor on the Power sensor board See Fig 2 3 Sensor Layout Diagram Is the printer recovered No Replace the Power sensor board YES END No Is the face up stacker drawn out or pushed into the printer completely No Draw the face up stacker out the printer completely or push it into the printer completely Yes Is the eject roller assembly installed properly No Insta...

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Page 144: ...he Power sensor board See Fig 2 3 Sensor Layout Diagram Is the printer recovered No Replace the Power sensor board YES END YES END YES Does the outlet sensor lever operate smoothly No Replace the outlet sensor lever Is the printer recovered No Clean the outlet sensor on the Power sensor board See Fig 2 3 Sensor Layout Diagram Is the printer recovered No Replace the Power sensor board YES END YES E...

Page 145: ...e thermistor contact so as to touch the contact assembly properly Yes Does the heat on signal appear at pin 31 HEAT ON signal 0 V in heater on state of the POWER connector on the Main board No Replace the Main board Yes Replace the Power sensor board No Does a fuser unit error occur after more than 90 seconds from the power on No Go to A Yes Turn the power OFF ON Is the heater of the fuser unit tu...

Page 146: ...tance 220 kΩ 25 C between pins 1 and 2 2 3 Ω 120 V and 8 5 Ω 240 V between pins 3 and 4 See chapter 7 3 Yes Replace the fuser unit No Is the AC voltage applied to the CN2 connector on the Power sensor board See Fig 4 No Is CN2 connector connected to the Power sensor board No Connect the CN2 connector to the Power sensor board properly Yes Is Pin 31 HEAT ON signal of the POWER connector of the Main...

Page 147: ... or envelope feeder used Yes Is the connection between the Main board and the optional tray connected properly See chapter 7 1 No Connect the cable properly Yes Replace the Main board Is the printer recovered No Isolate the trouble by following the 2nd tray or envelope feeder maintenance manual See appendix C or D YES END No Replace the Main board ...

Page 148: ...he operator panel connected to the PANEL connector of the Main board properly See chapter 7 1 No Connect the connecting cord of the operating panel to the PANEL connector of the Main board properly Yes Is the connecting cord defective Yes Replace the connecting cord No Replace the operator panel assembly Is the printer recovered No Replace the Main board YES END ...

Page 149: ...tional communication enable state DISABLE ENABLE in menu level 2 No Set the parallel I F to the bidirectional communication disable state ENABLE DISABLE in menu level 2 Is the printer recovered Yes END No Is the connector of the parallel interface cable connected to the printer properly No Connect the connector of the parallel interface cable to the printer properly Yes Is there any defect in the ...

Page 150: ...connector on the Main board properly No Connect the interface board option to the OKI HSP interface connector properly Yes Is there any broken or bent pin in the interface board option Yes Ask the user to replace the interface board option No Replace the Main board OK No A trouble may exist in the interface board option interface cable or host side Ask the user to check these items ...

Page 151: ...river board con nected properly Are CN8 connector on the Driver board and CN3 connector of the Power sensor board connected properly No Connect the connectors properly Yes Is there 30V on pins 19 and 20 of POWER connector on the main board No Replace the Power sensor board Yes Replace the Main board Is the printer recovered No Replace the Power sensor board Yes END ...

Page 152: ...3 Black stripes in the vertical direction Figure 6 4 D 4 Cyclical defect Figure 6 4 E 5 Print voids 6 Poor fusing 7 images are blurred or peeled off when touched by hands White streaks in the vertical direction Figure 6 4 F 8 Snowy print of high density pattern Figure 6 4 H 9 Blockly faded print Figrue 6 4 I 0 Light or blurred images as a whole A Black stripes in the vertical direction D Dark back...

Page 153: ... No Make the contact plate of the transfer roller contact with the power sensor board and Shaft of the transfer roller properly Yes Are the contact of the developing roller and the contact of the toner supply roller of the image drum cartridge contacted with the contact assembly properly See Figure 6 5 A and B No Adjust the contacts of the developing and toner supply roller to contact the contact ...

Page 154: ...wer on while pressing the MENU key and reset the drum counter Refer to User s Manual No Replace the Main board Power Sensor board 3 Black paper is output Is the LED head connected properly Check connector HEAD1 14P HEAD2 12p on the Main board and PC connector on the LED head No Connect the LED head properly or replace the head cable Yes Is the contact of the image drum cartridge contacted with the...

Page 155: ...r in the user maintenance mode by turning the power on while pressing the MENU key and reset the drum counter Refer to User s Manual No Replace the LED head Has the trouble been removed Yes End Note After replacing the LED head set the printer in the engine mainte nance mode by pressing the FORM FEED and ENTER keys while powering on the printer Set the LED head drive time Refer to Section 4 2 No R...

Page 156: ...e the image drum cartridge Transfer roller 2 30 58 4 mm Replace the transfer roller Heat roller 3 49 88 5 mm Replace the fusing unit assy Back up roller 3 52 89 5 mm Replace the back up roller Notes 1 After replacing the image drum cartridge set the printer in the user maintenance mode by turning the power on while pressing the MENU key and reset the drum counter Refer to User s Manual 2 After rep...

Page 157: ...he contact assy properly Yes Replace the image drum cartridge Has the trouble been removed Yes End Note After replacing the image drum cartridge set the printer in the user maintenance mode by turning the power on while pressing the MENU key and reset the drum counter Refer to User s Manual No Is the LED head installed properly Check connector HEAD1 14p HEAD2 12p on the Main board and PC Connector...

Page 158: ...pring of the back up roller normal No Replace the spring Yes Is the contact of the fusing unit assy contacted with the contact assy properly See Figure 6 5 G No Adjust the contact of the fusing unit assy to contact the contact assembly properly Yes Replace the fusing unit assy Has the trouble been removed Yes End No Replace the Main board or power sensor board ...

Page 159: ... HEAD1 14p HEAD2 12p on the Main board and PC connector on the LED head No Install the LED head properly Yes Replace the LED head Has the trouble been removed Yes End Note After replacing the LED head set the printer in the engine mainte nance mode by turning the power on while pressing the FORM FEED and ENTER keys Set the LED head drive time Refer to Section 4 2 Yes Replace the image drum cartrid...

Page 160: ...lens No Is the LED head installed properly No Install the head properly Yes Increase the printer setting number 0 1 Refer to User s manual 10 Blockly faded print Is toner low Yes Supply toner No Is paper of the specified grade used No Use paper of the specified grade Yes Is the lens of the LED head dirty Yes Clear the lens No Is the LED head installed properly No Install the head properly Yes Decr...

Page 161: ...Troubleshooting 6 44 OKIPAGE 16n Service Manual P N 59274401 Figure 6 5 Thermistor Thermistor Charge Roller Ground Cleaning Roller Developing Roller Toner Supply Roller F F E D C B A ...

Page 162: ...Troubleshooting 6 45 OKIPAGE 16n Service Manual P N 59274401 Figure 6 6 ...

Page 163: ...Troubleshooting 6 46 OKIPAGE 16n Service Manual P N 59274401 This page was intentionally left balnk ...

Page 164: ...21 22 23 24 NC NC NC NC TR P RMON N RM PRPH2 P RM PMPH1 P DMON N TR P XDMPH1 P XDMPH2 P THERMCHK N PAPERIN1 8V 8V FANON FANALARM 30V 30V 0VP 0VP 5V 5V 5V 0V 0V 0V 0V COVEROPEN HEATON WRPOSITION DATAOUT DATAIN SCLK SQCLR PAPERSIZE3 PAPERSIZE2 PAPERSIZE1 PAPERSIZE0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 4P 5P 24P 40P AOLC PCB 6P...

Page 165: ...Wiring Diagrams 7 2 OKIPAGE 16n Service Manual P N 59274401 7 2 PCB Layout 1 Main board BOARD COM ...

Page 166: ...Wiring Diagrams 7 3 OKIPAGE 16n Service Manual P N 59274401 2 Power Supply board 3 Driver board AOLC PCB ...

Page 167: ...Wiring Diagrams 7 4 OKIPAGE 16n Service Manual P N 59274401 4 PostScript board BOARD PSBA OKIPAGE16n PS only ...

Page 168: ...hermostat Heater Thermistor Unit Circuit Diagram Illustration Resistance Between pins 1 and 2 6 7Ω Between pins 3 and 4 6 7Ω Between pins 1 and 2 4 3Ω Between pins 3 and 4 4 3Ω Between pins 1 and 2 220kΩ at 25 C Between pins 3 and 4 2 3Ω 120V 8 5Ω 240V Registration motor Drum motor Fusing Unit Brown Oragne Red Yellow M 1 2 3 4 ...

Page 169: ... Manual P N 59274401 Orange Yellow Brown Black M 1 2 3 4 Unit Circuit Diagram Illustration Resistance Between pins 1 and 2 6 7Ω Between pins 3 and 4 6 7Ω Between pins 1 and 2 4 9KΩ Hopping motor Fan Red Black 38 V 1 FANALM N 3 0 V 2 M Yellow ...

Page 170: ...16n Service Manual P N 59274401 7 4 Program Font ROM Location 1 BOARD COM Q19 FRONT Q18 LH537U01 ODD LH537U02 EVEN CN9 Fuse NOTE If the fuse on this board opens the operator panel display will display the message INPUT JAM TRAY 1 ...

Page 171: ...Wiring Diagrams 7 8 OKIPAGE 16n Service Manual P N 59274401 This page was intentionally left blank ...

Page 172: ...nstructions on accessing Okilink II refer to the Service Center Reference Guide which is sent to your Dealership as part of the Service Authorization process Faxable Facts Faxable Facts is an automated fax document retrieval system Part numbers and pricing are available through Faxable Facts For instructions on accessing Faxable Facts refer to the Service Center Reference Guide which is sent to yo...

Page 173: ...Parts List 8 2 OKIPAGE 16n Service Manual P N 59274401 Printer Unit Figure 8 1 19 17 18 8 6 7 4 22 14 15 10 12 5 11 13 11 3 20 21 9 2 16 1 ...

Page 174: ...G1 1 1 3 6 53073501 1PP4128 1065P1 1 1 3 6 53073601 40033501 1 1 3 6 40033501 2PA4128 1066G1 1 1 3 6 53073801 1PP4128 1069P1 1 1 3 6 53073901 40035401 1 1 3 6 40035401 40035502 1 1 3 6 40035502 40035403 1 1 3 6 40035403 238A1071P0012 1 2 5 10 56629112 2PA4128 1074G1 1 1 3 6 50108201 2PA4128 1076G1 1 1 3 6 55700401 3PP4076 5052P1 1 0 3 6 53073301 4PP4076 5035P1 2 0 3 6 51608501 4PP4076 5036P1 1 0 3...

Page 175: ...P N 59274401 52 53 48 46 53 45 42 47 39 37 43 41 40 55 2 22 21 62 62 25 1 36 34 26 36 35 3 24 23 23 6 5 27 31 60 51 30 33 35 29 61 32 54 4 44 59 19 17 20 58 50 18 13 12 11 10 9 14 15 16 38 8 7 49 28 57 64 63 Main Chassis Unit Figure 8 2 1 of 2 ...

Page 176: ...43 4535P1 1 0 3 6 51234301 4PA4076 5755G1 1 1 3 6 50407901 4PP4076 5345P1 1 0 3 6 51608101 4PP4076 5308P1 1 0 3 6 51608201 4PB4076 5327P1 1 0 3 6 51235501 4PP4076 5061P1 1 0 3 6 51233701 4PP4076 5062P1 1 0 3 6 51233801 4PP4076 5063P1 1 0 3 6 51233901 4PP4076 5064P1 1 0 3 6 51234001 40045101 1 0 3 6 40045101 4PP4076 5068P1 2 0 6 12 51234201 4PB4076 5075P2 1 1 3 6 56511802 4PB4076 5076P1 1 1 3 6 504...

Page 177: ...P N 59274401 52 53 48 46 53 45 42 47 39 37 43 41 40 55 2 22 21 62 62 25 1 36 34 26 36 35 3 24 23 23 6 5 27 31 60 51 30 33 35 29 61 32 54 4 44 59 19 17 20 58 50 18 13 12 11 10 9 14 15 16 38 8 7 49 28 57 64 63 Main Chassis Unit Figure 8 2 2 of 2 ...

Page 178: ...6 5070G1 1 0 3 6 56513801 1YX4076 5300G1 1 0 3 6 50115901 4PB4076 5015P1 1 1 3 6 53350401 3PB4083 6089P4 1 1 3 6 52203804 40033001 2 0 6 12 40033001 4YS4011 4463P1 1 2 5 10 56731001 4YS4011 4448P3 1 2 5 10 56730803 40 Roller Eject Assy 41 Arm Damper 42 Cover Stacker Assy 43 Washer 44 Lever Backup Release 45 Head LED 46 Cable LED Head Assy for Normal HEAD 47 Cover Cable 48 Guide Cable B 49 Drum Ima...

Page 179: ...Parts List 8 8 OKIPAGE 16n Service Manual P N 59274401 Front Feeder Unit Figure 8 3 13 14 11 19 16 10 7 6 3 2 12 8 4 6 9 17 20 18 15 18 5 1 ...

Page 180: ... 5 10 56730621 220A1866P0140 1 2 5 10 56730640 4PB4078 1412P1 1 2 5 10 56212901 3PP4076 5389P1 1 0 3 6 50809801 4LB 190500 5 2 1 3 6 50925905 4PP4043 4742P1 2 1 3 6 50932101 4PP4076 5391P1 1 0 3 6 50932201 4PP4076 5308P1 2 1 3 6 51608201 1 Guide Paper Supply A 2 Guide Paper Supply B 3 Guide Paper Supply C 4 Roller Front Feed Assy 5 Plate Front Feeder 6 Cam Front Feeder 7 Gear Front Feeder One Way ...

Page 181: ...Parts List 8 10 OKIPAGE 16n Service Manual P N 59274401 Base Unit Figure 8 4 14 13 11 12 19 15 8 5 6 2 4 17 3 9 16 7 3 10 1 18 2 4 6 5 ...

Page 182: ...uide R Assy 1PA4076 5410G1 1 1 3 6 51016701 4PP4122 1217P1 2 2 6 12 51500301 4PP4076 5358P1 2 2 6 12 50516801 4PP4076 5417P1 2 0 6 12 50927302 4PP4076 5359P1 2 2 6 12 50607201 4PP4043 4526P1 2 0 6 12 50928801 1PA4076 5420G1 1 1 3 6 51016801 4YA4046 1621G11 1 2 5 10 55077101 220A1866P0140 1 2 5 10 56730640 4PP4076 5360P1 1 1 3 6 50928901 3PB4076 5144P1 1 1 3 6 51711001 4PP4076 5154P1 1 1 3 6 508082...

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Page 184: ... or equivalent Cable side 36 pin plug Male Type 57 30360 made by Daiichi Denshi or equivalent Plug 552274 1 AMP 552073 1 AMP or equivalent 2 Cable Cable length 6 ft 1 8 m max A Shielded cable composed of twisted pair wires is recommended for noise prevention IEEE 1284 compatible cable is strongly recommended and is required for use with Windows 3 1x and Windows 95 Enhancement Software Note Cable i...

Page 185: ...ion Functions 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 30 31 32 33 34 35 36 Parallel data sampling strobe Parallel input data During print processing or during alarm End of paper Select state ON LINE Request to change Mode Not used Signal ground Chassis ground 50 mA max Signal ground Initializing signal End of paper or during alarm Signal ground Not used High level 3 3 kΩ Request to change ...

Page 186: ... to 0 8 V HIGH 2 4 V to 5 0 V 5 Specifications Item Description Mode Compatibility mode Nibble mode ECP mode Data bit length 8 bits Compatibility mode 4 bits Nibble mode 9 bits ECP mode Input prime Valid Invalid Receive buffer 8K 20K 50K 100K 1M Bytes Control Handshaking control is performed in each mode Data received from the host is stored in the receive buffer Busy control is performed Signal l...

Page 187: ...Centronics Parallel Interface A 4 OKIPAGE 16n Service Manual P N 59274401 This page was intentionally left blank ...

Page 188: ...APPENDIX B HIGH CAPACITY SECOND PAPER FEEDER MAINTENANCE Preface This appendix describes the field maintenance methods for High Capacity Second Paper Feeder option of OKIPAGE16n OKIPAGE16n PS Page Printer Refer to the USER S MANUAL for the equipment handling and operation methods ...

Page 189: ...sent from the printer The main functions are the followings Paper that can be used Paper Type Cut Sheet Size A4 A5 B5 Letter Executive Legal13 Legal14 Special Size Paper Width 148 to 216mm Paper length 210 to 356mm Weight 64 81 g m2 Paper setting quantity 500 sheets of paper weighing 64 g m2 1 2 External View and Component Names Upper plate Motor assy Second side frame R assy Control board AOLT PC...

Page 190: ...the direction of the arrow E roller G turns the paper is fed for a predesignated distance until its leading edge reaches roller G 2 Next the hopping motor rotates in the direction of arrow B While the hopping gear also turns at the same time due to the one way bearing being engaged at the hopping gear the roller C does not turn The planet gear D moves to the direction of the arrow F drives the Rol...

Page 191: ...he printer with the paper being set single sheet at a time When the paper is loaded in the paper cassette it is then transported by the hopping motor carrying forward only a single sheet caught by the brake shoe at a time Printer Back up roller Transfer roller Hopping roller High Capacity Second Paper Feeder Idle roller Feed roller ...

Page 192: ...ond Paper Feeder from the printer 2 Do not disassemble the Second Paper Feeder if it is operating normally 3 Establish the extent of disassembly suitable for the purpose of the procedure and do not disassemble any more than necessary 4 Only specified service tools may be used 5 Disassembly must be carried out according to the prescribed procedures Parts may be damaged if such procedures are not fo...

Page 193: ...inted circuit boards and units in the field Table 3 1 Service Tools No 1 100 Philips screwdriver No 2 100 Philips screwdriver No 3 100 screwdriver No 5 200 screwdriver Digital multimeter Pliers Handy cleaner Connector remover 2 2 5 mm screws 3 5 mm screws OKI P N 4PP4076 5395P1 1 1 1 1 1 1 1 1 No Service Tools Q ty Place of use Remarks 1 2 3 4 5 6 7 8 ...

Page 194: ... P N 59274401 3 2 Parts Layout This section describes the layout of the main components Control board AOLT PCB Upper plate Hopping motor Idle roller Front panel Hopping gear One way Feed gear One way Second side frame R Feed roller Second side frame L Hopping roller ...

Page 195: ...thods This section describes the parts replacement methods for the components listed in the disassembly order diagram below High Capacity Second Paper Feeder Idle rollers 3 3 1 AOLT PCB 3 3 2 Hopping motor 3 3 3 Feed roller 3 3 4 Hopping roller rubber 3 3 5 Sideframe L assy 3 3 6 Sideframe R assy 3 3 7 ...

Page 196: ...High Capacity Second B 9 OKIPAGE 16n Paper Feeder Service Manual P N 59274401 3 3 1 Idle rollers 1 Remove two screws 1 and remove the front panel assy 2 2 Remove two idle rollers 3 3 1 2 ...

Page 197: ...y Second B 10 OKIPAGE 16n Paper Feeder Service Manual P N 59274401 3 3 2 AOLT PCB 1 Remove the screw 1 and remove the PCB cover 2 2 Remove three connectors 3 and two screws 4 then remove the AOLT PCB 5 1 2 3 4 4 5 ...

Page 198: ...3 3 1 step1 2 Remove the PCB cover see 3 2 2 step1 3 Remove two connectors 1 and two screws 2 then remove the hopping motor assy 3 Three gears 4 and the connecting lever 5 as well as the wave washer 6 all come off at the same time so be careful not to lose them 4 Remove two screws 7 and remove the hopping motor 8 1 1 3 8 7 4 4 5 6 2 ...

Page 199: ... step1 2 Remove the AOLT PCB see 3 3 2 3 Remove the hopping motor assy see 3 3 3 4 Remove the latch on the feed roller gear 1 and remove the feed roller gear 1 5 Remove the latch on the feed roller bearing 2 and remove the feed roller bearing 2 6 Shift the feed roller 3 to the right side and lift it out holding it on the left side 2 3 1 ...

Page 200: ...ed roller see 3 3 4 2 Remove the latch on the hopping roller gear 1 and remove the hopping roller gear 1 The bearing F 2 comes off at the same time so be careful not to lose it 3 Remove the latch on bearing L 3 and remove the bearing L 3 4 Remove the hopping roller 4 and remove the hopping roller rubber 5 from it 3 4 5 2 1 ...

Page 201: ...Remove three screws 1 and remove the upper plate 2 3 Remove two screws 3 and remove the side frame L assy 4 4 Remove the cassette lock spring 5 link 6 pull block 7 note the directions of the hooks of the cassette lock spring 5 5 Remove the spring 9 and cassette stopper 0 6 Remove the screw A and remove the link support B 9 0 7 5 6 B A 4 2 1 3 ...

Page 202: ...3 and remove the side frame R assy 4 4 Remove the cassette lock spring 5 link 6 pull block 7 and earth plate 8 note the directions of the hooks of the cassette lock spring 5 5 Remove the spring 9 and remove the cassette stopper 0 6 Remove the screw A and remove the link support B 7 Remove the screw C and remove the detector spring D 8 Remove the screw E and remove the AOLD PCB F 1 2 7 5 6 B A 4 F ...

Page 203: ...High Capacity Second B 16 OKIPAGE 16n Paper Feeder Service Manual P N 59274401 This page was intentionally left blank ...

Page 204: ...in detailed information concerning the problem from the user 3 Go through the checking in the conditions similar to that in which the problem occurred 4 2 Preparations for the Troubleshooting 1 Display on the Operator panel The status of the problem is displayed on the LCD Liquid Crystal Display on the Operator panel Go through the appropriate troubleshooting procedures according to the messages d...

Page 205: ...te of the High Capacity Second Pa per Feeder Notifies of occurrence of interface timeout between the printer and the High Capacity Second Paper Feeder Check the paper in the High Capacity Second Paper Feeder Carry out the recovery printing by opening the cover removing jammed paper and closing the cover and then turning the error display off Whentheproblemoccursfrequently to through the Troublesho...

Page 206: ...ing fed to above sensor plate Inlet YES Is the sensor plate Inlet operating normally NO Replace the sensor plate Inlet YES Clean the inlet sensor on the power sensor board or replace the power sensor board or inlet sensor NO Replace the hopping roller shaft assy or paper cassette NO Is the hopping roller shaft rotating YES Set the paper properly NO Is the stepping motor turning YES Replace the one...

Page 207: ...Connection Diagram 5 1 Interconnection Diagram AOLT PCB CN24 1 OP M1A 2 OP M1B 3 OP M2A 4 OP M2B M CN23 OP PSZ1 N OP PSZ2 N OP PSZ3 N OP PSZ4 N OV 5V 1 2 3 4 5 6 Hopping motor To Cassette switch board AOLD PCB CN22 PAPERIN N SCLK N DATA N OPTSDP N OVD 30V 1 2 3 4 5 6 To Printer 5V 7 ...

Page 208: ...High Capacity Second B 21 OKIPAGE 16n Paper Feeder Service Manual P N 59274401 5 2 PCB Layout AOLT PCB ...

Page 209: ...High Capacity Second B 22 OKIPAGE 16n Paper Feeder Service Manual P N 59274401 6 Parts List 10 11 9 15 9 8 13 12 1 3 4 6 14 17 16 2 7 5 ...

Page 210: ...901 6 Gear Feed Roller 2nd Tray 4PB4043 4488P1 1 51235401 7 Bearing Feed Roller 4PP4076 5035P1 1 51608501 8 Gear Idle 2nd Tray 4PP4076 5712P1 1 51235201 9 Gear Planet 2nd Tray 4PP4043 4491P1 3 51235301 10 PCB AOLT 2nd Tray 4YA4046 1645G11 1 55077511 11 Cord Connector 7p 2nd T 4YS4011 4448P3 1 56730803 12 Connector Square shaped 220A1866P0141 1 56730641 13 Plate FG Shaft 2nd Tray 4PP4076 5717P1 1 5...

Page 211: ...High Capacity Second B 24 OKIPAGE 16n Paper Feeder Service Manual P N 59274401 This page was intentionally left blank ...

Page 212: ...NDIX C MULTI FEEDER MAINTENANCE Preface This section is intended for the service personnel and describes the field maintenance methods for Multi Feeder option of OKIPAGE16n OKIPAGE16n PS LED Page Printer Refer to the USER S MANUAL for equipment handling and operation methods ...

Page 213: ...s are the followings Paper that can be used approximately 50 sheets of envelopes can be set at a time 1 2 External View and Component Names Plain paper Thick paper OHP film Post card label sheet Envelope A6 106 x 148 mm A4 Post card A4 size equivalent C5 DL COM 10 COM 9 Monarch 64 90 g m2 64 90 g m2 64 128 g m2 64 90 g m2 Paper type Paper size Quantity of paper Square shaped connector Cover frame ...

Page 214: ...as roller A The paper is fed for a predesignated distance until the leading edge reaches roller C 2 Next the hopping motor rotates in the direction of arrow E The planet gear F moves to the direction of arrow H and drives idle gear J The rotation of idle gear J is transmitted to the gears linked to it and drives pulley I on the same shaft as roller A turning roller C to feed the paper into the pri...

Page 215: ...E 16n Maintenance Service Manual P N 59274401 2 2 Hopper Mechanism The hopper automatically feeds the printer with the paper being set single sheet at a time Printer Multi Feeder Roller B Roller A Roller C Registration roller ...

Page 216: ...eder from the printer 2 Do not disassemble the Multi Feeder if it is operating normally 3 Establish the extent of disassembly suitable for the purpose of the procedure and do not disassemble any more than necessary 4 Only specified service tools may be used 5 Disassembly must be carried out according to the prescribed procedures Parts may be damaged if such procedures are not followed 6 Small part...

Page 217: ...d circuit boards and units in the field Table 3 1 Service Tools No 1 100 Philips screwdriver No 2 100 Philips screwdriver No 3 100 screwdriver No 5 200 screwdriver Digital multimeter Pliers Handy cleaner Connector remover 2 2 5 mm screws 3 5 mm screws OKI P N 4PP4076 5395P1 1 1 1 1 1 1 1 1 No Service Tools Q ty Place of use Remarks 1 2 3 4 5 6 7 8 ...

Page 218: ... Maintenance Service Manual P N 59274401 3 2 Parts Layout This section describes the layout of the main components Separator Sensor lever Roller B Roller A Planet gear Control board AOLE PCB Hopping motor Hopping cover Upper cover ...

Page 219: ...ods This section describes the parts replacement methods for the components listed in the disassembly order diagram below Multi Feeder Separator 3 3 1 AOLE PCB 3 3 2 Square shaped connector 3 3 3 Hopping motor 3 3 4 Planet gear 3 3 5 Roller B 3 3 6 Roller A 3 3 7 Mini pitch belt Feed roller 3 3 8 ...

Page 220: ...e paper stay 7 and disengage it from the separator bracket 8 then remove the separator 9 The spring 0 comes off at the same time so be careful not to lose it Check at the time of assembly When the secondary stage of idle gear A is turned in the A direction after engaging the plate and the frame the inclination of the pressure roller B is less than 0 1 mm against the plate C as shown in the right f...

Page 221: ... 59274401 3 3 2 AOLE PCB 1 Remove the upper cover see 3 1 1 1 to 3 2 Remove two screws 1 and remove the AOLE PCB 2 3 Remove the connector 3 4 Remove the connector 4 Caution Be careful to set the sensor plate properly when mounting AOLE PCB 2 2 3 1 4 Sensor plate ...

Page 222: ...ove the AOLE PCB see 3 3 2 3 Remove the screw 1 and remove the square shaped connector 2 4 Using the connector remover remove the nylon cord 3 from the square shaped connector 2 5 1 4 2 3 Confirmation after assembly 1 The square connector 2 should be horizontal to the cover frame 5 2 The square connector 2 should be hooked on the connector spring 4 and move smoothly 2 5 2 4 5 ...

Page 223: ...er C 12 OKIPAGE 16n Maintenance Service Manual P N 59274401 3 3 4 Hopping Motor 1 Remove the upper cover see 3 3 1 1 to 3 2 Remove the AOLE PCB see 3 3 2 3 Remove two screws 1 then remove the hopping motor 2 2 1 ...

Page 224: ...GE 16n Maintenance Service Manual P N 59274401 3 3 5 Planet gear 1 Remove the upper cover see 3 3 1 1 to 3 2 Remove the AOLE PCB see 3 3 2 3 Remove two screws 1 then remove the motor bracket assy 2 and the planet gear 3 3 2 1 ...

Page 225: ...ove the AOLE PCB see 3 3 2 5 Remove the motor bracket assy see 3 3 5 6 Remove the gear 1 7 Shift the roller B 2 to the right lift it by holding on its left side and pull it out to the left side The bearing 3 also comes off at the same time so be careful not to lose it Further pay special attention to make sure that you do not damage the sensor lever 4 while going through this procedure 3 2 1 4 Fra...

Page 226: ...ame 4 4 Remove four screws 5 and remove the frame 4 see 3 3 6 5 Move the belt to the right and remove it from the one way pulley 6 6 Move the carrier roller assembly to the right and remove it from the shaft 7 7 Move the roller A 8 to the right lift its left side and then pull it off to the left Be careful not to lose the shaft 7 being removed together Belt Carrier roller assy 7 6 8 3 8 6 7 1 2 1 ...

Page 227: ...nual P N 59274401 3 3 8 Mini pitch belt Feed roller 1 Remove the roller A see 3 3 7 2 Remove the bearing 1 and remove the feed roller assy 2 3 Remove two bearings 3 and remove the plate 4 4 Remove the mini pitch belt 5 and the feed roller 6 1 5 4 6 3 3 2 ...

Page 228: ...ons for Troubleshooting 1 Display on the operator panel The status of the problem is displayed on the LCD Liquid Crystal Display on the operator panel Go through the appropriate troubleshooting procedures according to the messages displayed on the LCD 4 3 Troubleshooting Method When a problem occurs go through the troubleshooting according to the following procedure Problem occurs Carry out detail...

Page 229: ...per state of the Multi Feeder Notifies of occurrence of interface timeout between the printer and the Multi Feeder Check the paper in the Multi Feeder Carry out the recovery printing by openingthecover removingjammed paperandclosingthecover andthen turning the error display off When the problem occurs frequently to through the Troubleshooting Check the paper in the Multi Feeder Also check to see i...

Page 230: ...being fed to above sensor plate Inlet YES Is the sensor plate Inlet operating normally NO Replace the sensor plate Inlet YES Clean the Inlet sensor on the power sensor board or replace the power sensor board or Inlet sensor NO Replace the feed roller roller A or roller B NO Are the feed roller roller A and roller B rotating YES Set the paper properly NO Is the belt torn YES Replace belt NO Is the ...

Page 231: ...16n Maintenance Service Manual P N 59274401 5 Connection Diagram 5 1 Interconnection Diagram AOLE PCB CN3 2 M T3 1 M T4 4 M T1 3 M T2 M CN1 OPTPSIN N OPTSCLK N OPTSD P OPTSDR N OVP 30V 5V 7 6 5 4 3 2 1 Pulse motor To the Printer ...

Page 232: ...Multi Feeder C 21 OKIPAGE 16n Maintenance Service Manual P N 59274401 5 2 PCB Layout AOLE PCB ...

Page 233: ...Multi Feeder C 22 OKIPAGE 16n Maintenance Service Manual P N 59274401 2 3 12 4 9 8 6 1 11 10 5 7 12 6 Parts List ...

Page 234: ... 5520P1 1 51229601 4 Motor Registration Stepper 4PB4083 6075P1 1 56510701 5 Roller B Multi Prps Fdr 3PB4083 5524P1 1 53343901 6 Pulley One Way MPFdr 4PB4043 4614P1 1 51235701 7 Belt Mini Pitch MPFdr 4LP 1313 338 1 51304901 8 Roller Feed MPrps Fdr 4PB4043 4743P1 1 50409701 9 PCB AOLE MPrps Fdr 4YA4046 1647G11 1 55077601 10 Connector Square Shaped 220A1866P0141 1 56730641 11 Cord Connector MPFdr 4YS...

Page 235: ...Multi Feeder C 24 OKIPAGE 16n Maintenance Service Manual P N 59274401 This page was intentionally left blank ...

Page 236: ...le length LocalTalk Defined max length 1 000 ft 305 m It is the maximum length for a LocalTalk network Recommended max length 10 ft 3 m For noise prevention 3 Interface signal Pin No 1 2 3 4 5 6 7 8 Signal Name Sync signal Transmit data minus Signal ground Receive data minus Transmit data plus Receive data plus Abfreviation SYNC TxD SG RxD TxD RxD Signal Direction PR PR PR PR PR Description Not us...

Page 237: ...e side 4 Signal level Differential output 5V Differential input 7V 5 Interface circuit a Receiving circuit b Transmitting circuit OUTPUT DIFFERENTIAL INPUT 26LS32 or equivalent 6 Receive margin 7 Communication protocol LocalTalk I F LocalTalk protocol 8 7 6 5 4 3 2 1 INPUT DIFFERENTIAL OUTPUT ENABLE 26LS30 or equivalent ...

Page 238: ...OKIPAGE 16n Service Manual Part Number 59274401 Printed in the USA ...

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