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OKIDATA Microline 395, Service Handbook

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%2.1.07 Line Feed Circuit

                                                                                                                                                
2.1.07 Line Feed Circuit
The Line Feed Motor Shaft is held stationary by +8 vdc supplied according to the pulse duty cycle of the 
LFCHOP signal (the holding current is approximately 30 ma) whenever in a stopped position.
During line feed operation, the Line Feed Motor is driven by +38 vdc in accordance with the LFOVDV-N 
signal. The signals LFf1 through LFf4 establish the proper phase relationship for driving the motor.

                                                                                                                                                

ML395 ( 96-02-03 )

Summary of Contents for Microline 395

Page 1: ...Chapter 0 Front Cover ML395 96 02 03...

Page 2: ...RS232 C Serial Interface and a Centronics Parallel Interface The printer is available in either a standard version Microline 395 single color output or a color capable version Microline 395C multiple...

Page 3: ...06 Symbol Sets Standard ASCII Epson Character Set IBM Character Set I and Set II IBM Proprinter All Character Set International Characters Line Graphics Code Page 850 863 437 1 2 07 Standard Fonts Uti...

Page 4: ...Labels Bottom feed only Continuous Forms Envelopes Card Stock Transparency 1 3 02 Weight 12 24 lb Continuous Form Paper 16 24 lbs Cut Sheet Paper 1 3 03 Number of Copies 1 4 4 Part Form Maximum 1 3 04...

Page 5: ...1 4 Physical Specifications 1 4 PHYSICAL SPECIFICATIONS 1 4 01 Printer Dimensions Width 16 42 Height 7 09 Length 22 44 1 4 02 Printer Weight 37 lbs ML395 96 02 03...

Page 6: ...wer Requirements 1 5 POWER REQUIREMENTS 1 5 01 Input Power Input Voltage 120 VAC 10 15 220 240 10 15 Frequency 50 60 hz 2 1 5 02 Power Consumption During Self Test 180 VA During Standby 60 VA ML395 96...

Page 7: ...mbient Temperature and Relative Humidity While in operation 41 F to 104 F 20 80 Relative Humidity While in storage 14 F to 122 F 5 95 Relative Humidity 1 6 02 Printer Noise Level 10 cpi LQ Mode Standa...

Page 8: ...t Sheet Feeder 1 8 02 Pull Tractor Assembly The Pull Tractor Assembly is required for bottom feeding if the optional Bottom Push Tractor Unit is not installed 1 8 03 Bottom Push Tractor Unit Card Stoc...

Page 9: ...Color Ribbon Cartridge Microline 395C Type Four band color ribbon Yellow Magenta Cyan Black Ribbon Life Black 2 1 million characters Cyan 1 9 million characters Magenta 1 9 million characters Yellow 1...

Page 10: ...1 10 01 ROM Resident Program ROM 128 Kbytes Resident Fonts 384 Kbytes 1 10 02 RAM Total RAM 64 Kbytes Print Buffer 23 Kbytes I F Buffer 8 K bytes DLL Buffer 22 Kbytes Command Buffer 11 Kbytes 1 10 03...

Page 11: ...F 8 000 hours 25 Duty Cycle 35 Page Density 1 11 02 Mean Time To Repair MTTR 15 minutes major sub assembly level 1 11 03 Printer Life 12 000 hours 25 Duty 35 Page Density 1 11 04 Printhead Life 200 Mi...

Page 12: ...ral Information The Control Board consists of the microprocessor and its peripheral circuits the drive circuits The power to the Control Board is supplied by the power supply unit The power to the oth...

Page 13: ...This LSI controls the following functions Space Motor Speed Control To obtain the carriage speed instructed by the Microprocessor the LSI generates the pulse switch timing and overdrive time Dot ON Ti...

Page 14: ...ML395 96 02 03...

Page 15: ...ircuit to the MPUs and LSIs When RST P is generated ROM program execution starts with the mode setting of Q8 Q9 Q12 and Q13 Next ROM and RAM are checked for errors RAM is initialized and the carriage...

Page 16: ...USY signal is turned ON as the data is processed When processing is completed the BUSY signal is turned OFF and an ACK signal is sent to the host to request more data The BUSY signal is also turned ON...

Page 17: ...ML395 96 02 03...

Page 18: ...ion is determined by an RC integrating circuit which modifies the HD ON pulse width The pulse width of the HD ON signal varies with the number of pins being driven Printhead Drive Time The drive time...

Page 19: ...lse duty cycle according to the speed data from the Slave MPU The SPMO FOW or SPMO REV signal from the Head Control LSI Q8 changes the current direction in the DC motor to run the motor in either the...

Page 20: ...he pulse duty cycle of the LFCHOP signal the holding current is approximately 30 ma whenever in a stopped position During line feed operation the Line Feed Motor is driven by 38 vdc in accordance with...

Page 21: ...thead coils this circuit monitors the printhead temperature by using a thermistor contained in the printhead The CPU senses this circuit every time a line is printed When printing the printhead temper...

Page 22: ...itch on the Push Tractor rear feed or the Paper End sensor on the sensor board bottom feed Whenever the Release Lever is in the Sheet Feed position Paper End is detected by a photosensor located in th...

Page 23: ...F Motor Bail Ribbon Motor Drive Voltage POW ALM Output from the Power Supply in the event of an abnormal temperature rise in the power supply unit or an overcurrent condition of the 38 vdc The Main Co...

Page 24: ...of the permanent magnet The armature can then spring forward and the print wire which is attached to the armature strikes the ribbon and imprints a dot on the paper When current is removed from the co...

Page 25: ...ML395 96 02 03...

Page 26: ...ve Pulley Idle Pulley Carriage Shaft Carriage Frame Space Belt Spacing Operation The carriage containing the printhead moves parallel to the platen along the main carriage shaft Power from the space m...

Page 27: ...feed is used Ink is supplied from an ink tank which is built in to the ribbon cartridge Ribbon Feed Operation The rotation of the space motor is transmitted to the drive gear in the ribbon cartridge...

Page 28: ...ase lever is set to the SHEET FEED position the change gear is disengaged from the tractor gear At the same time the release lever applies pressure to push the pressure rollers against the platen allo...

Page 29: ...ML395 96 02 03...

Page 30: ...on the left push tractor and the paper end sensor on the sensor board are active If paper is detected by either of these sensors paper end is inhibited When bottom feed paper is installed it moves the...

Page 31: ...Since the switch is turned ON paper is detected ML395 96 02 03...

Page 32: ...se NOTE If the paper does not move the Auto Load motion becomes invalid and is treated like an ordinary paper end Continuous Sheet Rear Feed SASF 1 Push the Paper Release Lever to the Continuous Sheet...

Page 33: ...e operates as follows The PARK TOF switch is pressed Reverse line feed retracts the paper until a paper end condition exists or until 14 inches of paper has been retracted The paper will remain on the...

Page 34: ...form disassembly on a malfunctioning unit until you have followed the failure analysis procedures in Section Four of this Service Handbook Follow the procedures listed in Adjustments and Service Setti...

Page 35: ...p Straight slot Screwdriver Needle Nose Pliers 4 inch Diagonal Cutters Tension Gauge capable of measuring 1 pound of pressure 7 mm open ended wrench Ruler capable of measuring 1 16 inch increments 3 3...

Page 36: ...ded maintenance tools 6 When disassembling follow the listed sequence Failure to follow the correct sequence may result in damaged parts 7 Since screws collars and other small parts are easily lost th...

Page 37: ...operating normally If you decide to perform disassembly during this training Okidata recommends that you perform only the disassembly procedures for RSPL items All other procedures are provided to as...

Page 38: ...connector to remove it NOTE When installing the printhead pull the printhead towards the stopper in the direction of Arrow A P N 50099905 Printhead Assembly RSPL B 2 02 P N 52103601 Ribbon Cartridge...

Page 39: ...2 02 Ribbon Guide 3 2 02 Ribbon Guide 1 Remove the printhead 3 2 01 2 Remove the two mounting screws 1 3 Lift the ribbon guide 2 and remove it P N 53055901 Guide Ribbon Black RSPL B 2 04 ML395 96 02...

Page 40: ...3 2 03 Ribbon Protector 1 Remove the printhead 3 2 01 2 Remove the ribbon guide 3 2 02 3 Remove the two mounting screws 1 4 Lift the ribbon protector 2 and remove it P N 53527001 Protector Ribbon RSPL...

Page 41: ...to remove it NOTE When installing the upper cover assembly Move the release lever 5 towards the front of the printer Move the bail arm lever 6 towards the back of the printer Check that the paper bai...

Page 42: ...ML395 96 02 03...

Page 43: ...moving it upward and then pulling toward the front of the printer 5 Open the eleven claws and detach the operator panel 5 from the operator panel holder P N 50100001 Panel Operator ML395 RSPL B 2 03...

Page 44: ...ield cover 6 Detach the remaining connectors from the control board 7 Loosen the mounting screw and remove the control board NOTES When assembling the printer Do not allow cables to get caught under t...

Page 45: ...ML395 96 02 03...

Page 46: ...serial interface connector 1 Remove the upper cover assembly 3 2 04 2 Disconnect connectors CN102 1 and CN103 2 3 Remove the two mounting screws 3 4 Lift the interface connector board 4 5 Detach conne...

Page 47: ...screws and brackets 5 There are two on the left side of the printer mechanism and one on the right side CAUTION Do not grasp the ribbon cartridge bracket paper chute or the guide shaft of the sheet fe...

Page 48: ...detach the gear pulley washer and bushing 6 6 Remove the screw and detach the gear and bushing 7 7 Push in the platen lever 8 lift the bail and remove the platen assembly NOTE Perform the line feed be...

Page 49: ...three mounting bolts and washers 1 3 Remove the line feed motor 2 NOTE When installing the line feed motor the cable should be positioned toward the top Adjust the line feed belt tension 3 3 02 after...

Page 50: ...me and remove the cable holder 2 5 Remove the two ribbon cartridge bracket mounting screws 3 6 Detach the cartridge bracket 4 7 Remove the mounting screw 5 8 Detach the connector clamp 6 9 Detach the...

Page 51: ...r mechanism 3 Disconnect cables CN2 1 and CN3 2 from the sensor board 3 4 Remove the three sensor board mounting screws 4 5 Disconnect connector CN1 5 and detach the sensor board P N 55050501 PCB Sens...

Page 52: ...ge bracket mounting screws 1 3 Detach the cartridge bracket 2 4 Remove the two mounting screws 3 5 Detach the ribbon feed assembly 4 NOTE When assembling install the ribbon drive assembly so that the...

Page 53: ...pushing the belt pulley bracket 2 to the left temporarily tighten the two screws This will ease the tension on the space belt 5 Remove the three space motor mounting screws 3 6 Using needle nosed pli...

Page 54: ...mbly 3 2 14 4 Remove the mounting screw 1 5 Detach the belt clamp 2 6 Remove the belt pulley 3 from the bracket 4 and detach the space belt 5 NOTE When installing the belt clamp Place the ribbed side...

Page 55: ...1 3 Detach the cartridge bracket 2 4 Using needle nosed pliers detach the nylon cable clamp 3 from the fan cover 4 5 Remove the two fan cover mounting screws 5 6 Remove the cooling fan fan cover asse...

Page 56: ...Disconnect connector CN2 1 3 Remove the two mounting screws 2 4 Detach the bail ribbon motor assembly 3 NOTE When assembling install the bail ribbon motor assembly so that the gear teeth contact prope...

Page 57: ...open cam 3 6 Detach the E snap ring 4 and remove the left bail arm 5 from the indicator shaft assembly 6 by pulling to the left 7 Remove the right bail arm 7 by pulling to the right while expanding t...

Page 58: ...ML395 96 02 03...

Page 59: ...the two rubber carriage bumpers 6 6 Slide the carriage shaft 7 to the right and remove the carriage 8 7 Continue sliding the carriage shaft to the right then remove the carriage shaft NOTE When instal...

Page 60: ...the paper pressure bar faces up 6 Using needle nose pliers squeeze the nylon latch 6 to release the switch harness 7 which is located at the left side of the printer mechanism 7 Lift and remove the p...

Page 61: ...lever microswitch 1 2 Push down on the mounting tab and remove the printhead gap microswitch 2 3 Using a needle nose pliers detach the nylon cable clamp 3 and remove the harness and switches from the...

Page 62: ...tall the friction ring in the upper center guide If the upper center guide moves easily along the locking shaft you must rotate the friction ring 45 degrees using a standard screwdriver 12 2 Check the...

Page 63: ...ML395 96 02 03...

Page 64: ...r You must raise the power supply unit slightly so it will become detached from the two guides A in the lower cover NOTE Be careful not to damage the cables with the power supply unit mounting bracket...

Page 65: ...el Only 1 Detach the printer access cover 2 Remove the ribbon cartridge 1 3 Remove the shift arm spring 2 4 Remove the 7 mm mounting bolt 3 and detach the ribbon shift arm 4 P N 50315401 Screw Color R...

Page 66: ...oller Lever 1 Open the printer access cover 2 Remove the ribbon cartridge 3 Remove the shift arm spring 3 2 23 4 Remove the two 7 mm bolts 1 and detach the roller lever 2 P N 53479001 Lever Roller Col...

Page 67: ...1 and detach the ribbon shift arm 2 from projection A of the ribbon guide 3 3 Remove the two printhead mounting screws 4 Lift the printhead from the printer As you lift the printhead the ribbon guide...

Page 68: ...ML395 96 02 03...

Page 69: ...alling make sure that the plastic ring is positioned against the rim on the bail open cam Installation may be easier if the bail open cam is installed on the shaft first followed by the bail open gear...

Page 70: ...4 Remove the washer 5 Remove the ribbon shift cam 3 NOTE Assembly Hold back the spring 4 while pushing the gear and cam on the shaft Place the roller 5 in the groove 6 of the ribbon shift cam Perform...

Page 71: ...hanism 3 2 08 2 Remove the ribbon shift cam and ribbon shift gear 3 2 27 3 Remove the mounting screw 1 4 Detach the ribbon shift cam lever 2 from the cartridge bracket 3 NOTE After assembly perform th...

Page 72: ...Printer Unit Bottom Push Tractor Unit Optional 1 Turn the power switch OFF and remove the AC power cord from the outlet 2 Remove the DIN connector 1 3 Lift the printer unit 2 from the bottom push tra...

Page 73: ...TFD Printed Circuit Board 1 Remove the printer unit 3 2 30 2 Disconnect the two cables 1 CN1 and CN2 from the BTFD board 2 3 Remove the two mounting screws 3 4 Detach the BTFD board P N 55066102 PCB B...

Page 74: ...nsion Spring 3 2 32 Tension Spring 1 Remove the printer unit 3 2 30 2 Detach the tension spring 1 from between the bottom cover 2 and the blind plate 3 P N 50922001 Spring BTF Option RSPL B 2 15 ML395...

Page 75: ...3 2 33 Sheet Guide 3 2 33 Sheet Guide 1 Remove the printer unit 3 2 30 2 Remove the sheet guide 1 P N 51002201 Guide Sheet BTF Option RSPL B 2 15 ML395 96 02 03...

Page 76: ...printer unit 3 2 30 2 Detach connector CN1 1 from the BTFD board 2 3 Remove the tension spring 3 2 32 4 Remove the four mounting screws 3 5 Remove the bottom push mechanism 4 6 Detach the door assemb...

Page 77: ...2 34 Steps 2 3 4 5 3 Detach the lock flange 1 of the drive pulley 2 4 Remove the mini pitch belt 3 5 Remove the drive pulley NOTE If you are only removing the mini pitch belt it is not necessary to r...

Page 78: ...he printer unit 3 2 30 2 Remove the bottom push mechanism 3 2 34 Steps 2 3 4 5 3 Detach connector CN2 1 from the BTFD board 4 Remove the two mounting screws 2 5 Detach the line feed motor 3 P N 565094...

Page 79: ...1 the balancer 2 and the E clip 3 4 Remove the four mounting screws 4 and detach the side frame 5 5 Pull the tractor lock levers 6 in the direction of Arrow A 6 Slide the tractor assemblies 7 from the...

Page 80: ...g collar until you obtain a 015 002 gap between the printhead and the platen 10 Place the printhead at the right side of the platen 11 Rotate the right adjusting collar until you obtain a 015 002 gap...

Page 81: ...ML395 96 02 03...

Page 82: ...at least once before making the adjustment 1 Loosen the three line feed motor mounting bolts 1 2 Using a tension gauge apply 5 pound of pressure at point A 3 Adjust the line feed motor 2 position to...

Page 83: ...ate the ribbon shift cam 1 so the ribbon guide 2 is at the top of the post 3 4 The gap from the end face of the ribbon sensor 4 to the shift cam lever 5 must be 020 5 If adjustment is necessary loosen...

Page 84: ...Resets Printer Menu to factory defaults QUIET LINE FEED Hold during power ON Resets Top of Form to factory default LINE FEED Hold during power ON Activate Font Test To end Font Test press SELECT QUIET...

Page 85: ...Step A to print the current menu Go to Step B to change the menu Step A Press PRINT to print the current Menu Press EXIT to exit Menu Mode The printer will go ON LINE SELECT will light Step B Press GR...

Page 86: ...SELECT and place the printer OFF LINE SELECT will not be lit 4 Press QUIET to enter Menu Mode 5 The line shown below will print Printer Control Emulation Mode Epson LQ 6 Press PRINT to print the curr...

Page 87: ...Sample Menu Sample Menu ML395 96 02 03...

Page 88: ...Bi directional uni directional Paper Out Override No Yes Print Registration 5 4 3 2 1 0 1 2 3 4 5 Operator Panel Function Full Operation Limited Operation Ribbon Selection Appears for Color Ribbon Mod...

Page 89: ...dish Italian Spanish I Japanese Norwegian Danish II Spanish II Latin American French Canadian Dutch Publisher Code Page USA Multilingual Canada French Zero Character Slashed Unslashed General Interfac...

Page 90: ...Busy Time 200 mS 1 sec ML395 96 02 03...

Page 91: ...lts ALL customized settings are lost when the menu is reset to factory defaults 1 Print the Menu When the menu is reset to factory defaults ALL customized settings WILL BE lost 2 Power OFF the printer...

Page 92: ...CTER PITCH on the operator panel do not work when the printer is set for LIMITED OPERATION Procedure CAUTION Check with the system manager BEFORE changing the setting for the operator panel function 1...

Page 93: ...3 Press SELECT until the printer is OFF LINE SELECT will NOT be lit 4 The red line on the plastic ribbon protector indicates the base of the printing line Use this red line as a guide 5 Press and hold...

Page 94: ...er park cannot be used when the optional pull tractor is installed Procedure 1 Tear off any printed pages 2 Make sure the printer is selected The SELECT lamp must be lit 3 Press PARK 4 The paper will...

Page 95: ...fy that the printer is ON LINE SELECT lamp is lit 5 Press SELECT and place the printer OFF LINE SELECT will not be lit 6 Press QUIET to enter Menu Mode 7 The line shown below will print Printer Contro...

Page 96: ...power OFF the printer and detach the AC power cable from the printer and the AC outlet Cleaning Interval Every six months or 300 hours of operation Cleaning Tools Lint free cloth Soft cloth Vacuum cle...

Page 97: ...hours of operation Recommended Lubricant Machine Oil 10w 30 or equivalent shown as PM on lubrication diagrams Moly grease Alvania grease 2 EP or equivalent shown as GEP on lubrication diagrams Lubric...

Page 98: ...Lubrication Points Monochrome and Color Lubrication Points Monochrome and Color ML395 96 02 03...

Page 99: ...Lubrication Points Monochrome and Color Continued Lubrication Points Monochrome and Color ML395 96 02 03...

Page 100: ...Lubrication Points Monochrome and Color Continued Lubrication Points Monochrome and Color ML395 96 02 03...

Page 101: ...Lubrication Points Color Lubrication Points Color ML395 96 02 03...

Page 102: ...Lubrication Points Options Lubrication Points Options ML395 96 02 03...

Page 103: ...e Be sure to secure the printhead so it will not move during shipment 9 Locate the original packaging or order replacement packaging from Okidata Refer to Appendix B 10 Make sure the printhead is secu...

Page 104: ...sure to secure the printhead so it will not move during shipment 1 Locate the original packaging or order replacement packaging from Okidata Refer to Appendix B 2 Locate the originally supplied facto...

Page 105: ...e product being operated under the proper ambient conditions 2 Does the paper being used meet the specifications for this product 3 Has the ribbon been replaced as recommended 4 Has the ribbon been in...

Page 106: ...the bail arm 2 Check for a paper jam 3 Verify that the printhead moves freely 4 Record the status of the PRINT QUALITY FONT and CHARACTER PITCH Lamps 5 Refer to the Alarm Lamp Codes Table Section 4 6...

Page 107: ...fter the unit is powered ON YES Which of the following resembles the problem Power is not supplied to the printer Refer to RAP 01 No spacing operation Refer to RAP 02 ALARM lamp is blinking Refer to S...

Page 108: ...t If the printer output is faded install a new ribbon then print another sample 2 Make sure that the paper you are using is within specifications Paper specifications can be found in Section 1 of this...

Page 109: ...aper to stick In cold dry weather static charges can build up on continuous form paper This can make the paper cling to the paper separator If this problem occurs during high volume printing jobs try...

Page 110: ...ar the bottom of the list If the software does NOT offer any driver on the list check with the software manufacturer to see if additional drivers have been added since the software was purchased Verif...

Page 111: ...Place the lever in correct position 3 Paper is not within specification Refer to Section One for paper specification Uneven Print Density Possible Causes 1 Printhead gap not within specification Perfo...

Page 112: ...es not remove the cause of the binding 2 Make sure that the line feed belt tension is within specification If it is not tighten the line feed belt 3 Defective line feed motor Replace the line feed mot...

Page 113: ...m Codes Table ORA UTL NLQ 10 15 20 PROP Alarm Description Code Corrective Action ON ON MPU Internal RAM Error 11 Replace controller board ON ON Program ROM Error 12 Replace Master ROM ON ON ON Residen...

Page 114: ...ON ON Print Overrun Error 52 Replace controller board ON ON ON ON Head Homing Error 53 See RAP 03 ON ON ON Slave CPU Initial Error 54 Replace controller board ON ON ON ON Thermistor Open Error 55 Repl...

Page 115: ...Using the RAPs When using the Repair Analysis Procedures follow these steps 3 Go to the RAP Index 4 Find the RAP which is associated with the printers problem 5 Go to the appropriate RAP 6 All RAPs b...

Page 116: ...4 7 02 RAP Index 4 7 02 RAP Index ML395 96 02 03...

Page 117: ...ply unit open YES Replace the fuse F1 If it opens again replace the power supply unit Has the problem been resolved YES End of procedure NO Go to the next step listed below NO Are the 5Vdc and 38Vdc p...

Page 118: ...he problem been resolved YES End of procedure NO Go to A A Is 38Vdc present on the control board Check on both ends of the capacitor C2 YES Are cables CN1 and CN5 on the control board correctly connec...

Page 119: ...ctly install the connector Has the problem been resolved YES End of procedure NO Contact Okidata Technical Support NO Are cables CN3 and CN7 on the control board correctly connected to the power suppl...

Page 120: ...ing No friction at each fulcrum of the carriage bracket roller lever and ribbon shift arm YES Is cable CN2 on the sensor board connected correctly NO Connect it correctly YES Is cable CN4 on the contr...

Page 121: ...s cable CN4 on the control board connected correctly NO Connect it correctly YES Are cables CN2 CN3 on the sensor board connected correctly NO Connect them correctly YES Is there dirt or dust on any o...

Page 122: ...ge Check at both ends of C8 for the negative voltage YES Replace the printhead Has the problem been resolved YES End of procedure NO Go to A NO Are cables CN3 and CN7 on the control board properly con...

Page 123: ...echanism has been disengaged NO Replace the ribbon cartridge Manually shift the carriage to the left and to the right Does the ribbon feed shaft rotate NO Replace the ribbon feed assembly After the re...

Page 124: ...of platen gear idle gear and drive gear 4 Remove any foreign matter or dust on the platen gear idle gear or drive gear YES Is cable CN6 on the control board connected correctly NO Connect it correctl...

Page 125: ...RT Is cable CN1 on the operator panel connected correctly NO Connect it correctly YES Is cable CN10 on the operator panel connected correctly NO Connect it correctly YES Replace the operator panel Has...

Page 126: ...ECT lamp ON NO Place the printer ON LINE YES Is the interface cable connected correctly NO Connect it correctly YES Is cable CN101 on the interface connector board connected correctly NO Connect it co...

Page 127: ...r and Slave Program ROMs Has the problem been resolved YES End of procedure NO Replace the control board Has the problem been resolved YES End of procedure NO Perform the following 1 Replace the inter...

Page 128: ...YES End of procedure NO Are 8vdc outputs provided on the control board NO Replace the power supply unit YES Refer to RAP 10B Has the problem been resolved YES End of procedure NO Replace the power sup...

Page 129: ...place the sheet feeder assembly L YES Does the single sheet end sensor function correctly NO Perform the operations listed below 1 Check that there is no dirt or dust on the sensor surface 2 Correctly...

Page 130: ...the ribbon bail motor assembly Has the problem been resolved YES End of procedure NO Go to A C Check the parts listed below 1 Shoulder screw 2 Ribbon shift arm and spring 3 Roller lever 4 Ribbon cart...

Page 131: ...CAUTION If 13 6 inch Paper Width is selected in the Menu and you run this test with 8 5 inch wide paper loaded the Microline 395 will print on the platen This may damage the platen ribbon and printhe...

Page 132: ...th Height LQ SWISS Proportional LQ ROMAN Proportional LQ ORATOR 10 cpi 12 cpi LQ COURIER Proportional Procedure 1 Verify that the printer is loaded with paper 2 Power OFF the printer 3 Press and hold...

Page 133: ...ML395 96 02 03...

Page 134: ...P TEST will be printed 7 The size of the Message Buffer will be printed 8 One of the following messages will be printed next If the message OK is printed the serial interface function has been tested...

Page 135: ...n example of hexadecimal dump Below is the same line as it would appear in Hex Dump Mode 1B 30 1E 54 68 69 73 20 69 73 20 61 6E 20 65 78 0 This is an ex 61 6D 70 6C 65 20 66 20 61 20 68 65 78 61 64 am...

Page 136: ...Information 4 9 RESISTANCE CHECKS 4 9 01 General Information The following resistance charts are included in this section Printhead Resistance Line Feed Motor Resistance Space Motor Resistance Ribbon...

Page 137: ...4 9 02 Printhead Resistance Check 4 9 02 Printhead Resistance Check The resistance of each coil should be about 4 5 ohms ML395 96 02 03...

Page 138: ...4 9 03 Line Feed Motor Resistance Check 4 9 03 Line Feed Motor Resistance Check The resistance of each coil should be about 5 6 ohms ML395 96 02 03...

Page 139: ...4 9 04 Space Motor Resistance Check 4 9 04 Space Motor Resistance Check The resistance of the motor should be about 11 4 ohms ML395 96 02 03...

Page 140: ...4 9 05 Ribbon Motor Resistance Check 4 9 05 Ribbon Motor Resistance Check The resistance of each coil should be about 34 ohms ML395 96 02 03...

Page 141: ...ral Information This section describes the characteristics of the printed circuit boards used in the product The following areas are covered Firmware Fuses Jumpers Sensors Switches Test Points Where a...

Page 142: ...INDEX TO CHARTS Description Board Designation Section Main Controller Board TFCB 1 2 A 2 01 Power Supply Board POW A 2 02 Interface Board TFIF A 2 03 Sensor Board LQEW A 2 04 Operator Panel Board TFO...

Page 143: ...ML395 96 02 03...

Page 144: ...U Q 11 B Side indicates that the Font ROM is located in IC socket Q 7 SP3 OPEN Monochrome Model SHORTED Color Model Sensors NONE Switches NONE Test Points 38 vdc Printhead space linefeed bail ribbon m...

Page 145: ...ard POW Firmware NONE Fuses F1 10 0 Amp 125V AC line fuse Jumpers NONE Sensors NONE Switches NONE Test Points 38 vdc Check CN1 Pin 6 8 vdc Check CN2 Pin 6 8 vdc Check CN2 Pin 7 5 vdc Check CN2 Pin 4 S...

Page 146: ...ML395 96 02 03...

Page 147: ...ignal of Centronics I F invalid SP102 A Side I Prime signal of Centronics I F is valid B Side I Prime signal of Centronics I F is invalid SP103 A Side 5 vdc is output to pin 18 of Centronics I F B Sid...

Page 148: ...NE Sensors Bottom Paper Sensor BES Bail Arm Sensor BHS Ribbon Shift Sensor RHS Located on sensor board in color model ONLY CN1 Connector for Cut Sheet Paper Photosensor The Cut Sheet Paper Photosensor...

Page 149: ...he following functions Select Deselect SEL Line Feed LF Form Feed FF Top of Form Set Park TOF Quite Mode Select QU Print Quality PQ Character Pitch CP Font Select FSEL Micro Feed Up UP Micro Feed Down...

Page 150: ...B 2 Charts B 2 CHARTS Index to Charts Below is an index to the illustrated parts breakdown charts Description Section ML395 96 02 03...

Page 151: ...nit Black and White 2 of 3 B 2 07 Printer Unit Black and White 3 of 3 B 2 08 Printer Unit Color 1 of 3 B 2 09 Printer Unit Color 2 of 3 B 2 10 Printer Unit Color 3 of 3 B 2 11 Cables and Connectors B...

Page 152: ...Item Okidata P N Oki J P N Description Comments Refer to B 1 02 Disassembly Procedure 1 50212441 2PA4016 4723G41 Cover Middle Assembly ML395 RSPL 3 2 04 1 50212442 2PA4016 4723G42 Cover Middle Assembl...

Page 153: ...3 50215801 1PA4094 5841G1 Cover Rear Assembly RSPL 3 2 04 ML395 96 02 03...

Page 154: ...2 02 Printer Unit General Assembly Part numbers are subject to change Refer to Okilink II for current part numbers and pricing information Item Okidata P N Oki J P N Description Comments Refer to B 1...

Page 155: ...RSPL 3 2 04 9 55071811 4YA4050 3085G11 PCB TFCB 1 w o ROM ML395 Black RSPL 3 2 06 10 55071812 4YA4050 3085G12 PCB TFCB 2 w o ROM ML395C Color RSPL 3 2 06 11 56619201 3YS4011 7912G1 Cord I F Main PCB C...

Page 156: ...er to B 1 02 Disassembly Procedure 1 55071701 4YA4050 3106G1 PCB TFOP Op Panel RSPL 3 2 05 2 50100001 3PP4043 2712G5 Panel Operator ML395 RSPL 3 2 05 3 50910505 4LB 192200 5 Spring Cover Open RSPL 3 2...

Page 157: ...ription Comments Refer to B 1 02 Disassembly Procedure 1 53055901 4PP4043 2643G1 Guide Ribbon Black RSPL 3 2 02 2 53527001 4PP4043 3954G1 Protector Ribbon RSPL 3 2 03 3 N A N A Clamp 3 2 11 4 56614201...

Page 158: ...P N Oki J P N Description Comments Refer to B 1 02 Disassembly Procedure 1 53056002 3PP4043 2477P2 Guide Ribbon Color RSPL 3 2 26 2 53527001 4PP4043 3954G1 Protector Ribbon RSPL 3 2 03 3 N A N A Clam...

Page 159: ...19 10 50315401 4PP4043 2745P1 Screw Color RSPL 3 2 24 11 50924001 4PP4043 3803P1 Spring Shift Arm Color RSPL 3 2 24 12 53478901 4PP4043 2776G1 Arm Ribbon Shift Color RSPL 3 2 24 13 53479001 4PP4043 27...

Page 160: ...sassembly Procedure 1 N A 3PB4043 4227P1 Bottom Rear Guide N A 2 N A 3PB4043 4357P1 Bottom Guide N A 3 50054101 4PA4043 2556P1 Platen Assembly RSPL 3 2 09 4 51214501 3PP4043 2466P1 Gear Platen A RSPL...

Page 161: ...601P1 Motor Step Bail Arm Assembly RSPL 3 2 17 13 50054401 4PA4043 2711G1 Assembly Indicator Shaft RSPL 3 2 18 14 50910701 4PP4043 2628P1 Spring Bail Arm Left RSPL 3 2 18 15 50910801 4LB 193100 2 Spri...

Page 162: ...ge Assembly Black 3 2 19 2 50703701 4PP4043 2507P1 Collar Eccentric Carriage Rail RSPL 3 2 19 3 51110301 4PB4043 2565P1 Shaft Carriage RSPL 3 2 19 4 53478401 3PP4043 2504P1 Lever Adjust Printhead Gap...

Page 163: ...3478706 3PP4043 2459P6 Lever Release RSPL 3 2 20 12 55034801 4YX4043 2576G1 Sensor Cut Sheet Paper End RSPL 3 2 20 13 53068602 3PP4043 2505P2 Indicator PH Gap Adj Bracket RSPL 3 2 21 14 56209901 4YX40...

Page 164: ...actor Push Left Assembly RSPL 3 2 22 2 50054601 3PA4043 2562G1 Tractor Push Right Assembly RSPL 3 2 22 3 51002301 4PP4043 2451P1 Friction Piece RSPL 3 2 22 4 51002401 3PP4043 2451P1 Guide Center Upper...

Page 165: ...ocedure 1 N A 3PB4043 4227P1 Bottom Rear Guide N A 2 N A 3PB4043 4357P1 Bottom Guide N A 3 50312103 4LB 130100 3A Screw Shoulder Left Color RSPL N A 4 50312106 4LB 130100 6A Screw Shoulder Right Color...

Page 166: ...2 12 11 55050502 4YA4042 146262 PCB Sensor LQEW Z RSPL 3 2 12 12 56619104 4YS4011 4321P1 Cord Sensor PCB Connection RSPL 3 2 12 13 50054301 4PA4043 2584G1 Assembly Ribbon Feed RSPL 3 2 13 14 56506205...

Page 167: ...4401 4PA4043 2711G1 Assembly Indicator Shaft RSPL 3 2 18 2 50910701 4PP4043 2628P1 Spring Bail Arm Left RSPL 3 2 18 3 50910801 4LB 193100 2 Spring Bail Arm Right RSPL 3 2 18 4 51210201 5LR 193134 1 Ge...

Page 168: ...ease Lever Guide RSPL 3 2 20 13 50907502 4LB 193400 1 Spring Paper Chute RSPL 3 2 20 14 50910201 4PB4043 2754P1 Spring Detent Release Lever RSPL 3 2 20 15 50910305 4LB 190600 6 Spring Idle Gear RSPL 3...

Page 169: ...Indicator PH Gap Adj Bracket RSPL 3 2 21 2 56209901 4YX4043 2784G1 Switch Micro Adj Release Lever RSPL 3 2 21 3 50054501 3YX4043 2561G1 Tractor Push Left Assembly RSPL 3 2 22 4 50054601 3PA4043 2562G1...

Page 170: ...4PP4043 2499P1 Gear Bail Open Color RSPL 3 2 27 13 50911001 N A Brake Spring B Color 3 2 27 14 50910901 N A Brake Spring A 3 2 28 15 51215101 4PP4043 2729P1 Gear Ribbon Shift Color RSPL 3 2 28 16 5122...

Page 171: ...ly Procedure 1 56609701 3YS4011 1315P1 Cord AC 120V RSPL 3 2 01 2 56624101 3YS4011 1265P1 Cord AC 220V ML Series Right Ang Option RSPL 3 2 01 3 70000803 N A IBM PC Cable Kit Interface Cable 3 2 01 4 5...

Page 172: ...6614201 3YX4043 2713G1 Cable Printhead Assembly RSPL 3 2 11 9 56619104 4YS4011 4321P1 Cord Sensor PCB Connection RSPL 3 2 12 10 56614101 4YS4011 6295G1 Cord Power Connection 9 Pin RSPL 3 2 23 11 56614...

Page 173: ...numbers are subject to change Refer to Okilink II for current part numbers and pricing information Item Okidata P N Oki J P N Description Comments Refer to B 1 02 Disassembly Procedure 1 56406302 4YB...

Page 174: ...PL 3 2 01 3 70021601 N A Bottom Tractor Feed Unit Push Option 3 2 30 4 70011701 N A Pull Tractor Assembly Top Mount Option N A 5 70010601 N A Cut Sheet Feeder Single Bin CSF 30001 Option N A 6 7001070...

Page 175: ...Bottom Tractor Feed Unit Push BTF Option B 2 15 Bottom Tractor Feed Unit Push BTF Option Part numbers are subject to change Refer to Okilink II for current part numbers and pricing information ML395 9...

Page 176: ...BTF Option RSPL 3 2 32 6 51002201 4PP4025 2653P1 Guide Sheet BTF Option RSPL 3 2 33 7 53063701 3PA4094 6159G1 Door Front Assembly BTF Option RSPL 3 2 34 8 51228801 3PP4053 2693P1 Pulley Drive BTF ML39...

Page 177: ...2 16 BTF Pull Up Roller Assembly Option B 2 16 BTF Pull Up Roller Assembly Option Part numbers are subject to change Refer to Okilink II for current part numbers and pricing information ML395 96 02 0...

Page 178: ...B 1 02 Disassembly Procedure 1 50215901 4YA4043 4280G1 Pull Up Roller Assembly Option RSPL N A 2 50212604 2PA4016 4722G4 Cover Acoustic Pull Tractor BTF Option RSPL N A NOTE The Pull Up Roller Assembl...

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