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OKIDATA ML393C Plus, Service Manual

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Service Guide ML393/ML393CPlus

Chapter 2 Principles of Operation

 
2.1 ELECTRICAL OPERATION

2.1.01 General 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 other electrical parts is 
distributed via the connectors on the Control Board.

Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business 
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)

Summary of Contents for ML393C Plus

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: ...ng Manual 09 17 97 Note This Adobe Acrobat version of the Okidata Service Training Manual was built with the pictures rendered at 300 dpi which is ideal for printing but does not view on most displays...

Page 3: ...ion 15 1 6 09 Interface 16 1 6 10 Line Feed Increments 17 1 6 11 Line Feed Time 18 1 6 12 Menu Mode 19 1 6 13 Paper Feed Methods 20 1 6 14 Paper Feed Paths 21 1 6 15 Paper Loading 22 1 6 16 Paper Out...

Page 4: ...trol Board LQEM 58 3 2 07 Interface Connector Board LQPN 59 3 2 08 Printer Mechanism 60 3 2 09 Platen Assembly 61 3 2 10 Line Feed Motor 62 3 2 11 Printhead Cable Assembly 63 3 2 12 Sensor Board 64 3...

Page 5: ...ents General Information 92 3 3 02 Printhead Gap Adjustment 93 3 3 03 Line Feed Belt Tension 94 3 3 04 Color Adjustment Microline 393C Plus Printer 95 3 3 05 Key Combinations 96 3 3 06 Menu Operation...

Page 6: ...137 RAP 02 Space Error ALARM 57 138 RAP 03 Head Homing Error ALARM 53 139 RAP 04 Ribbon Homing Error ALARM 5B 140 RAP 05 Bail Home Error ALARM 5C 141 RAP 06 Wrong Character Character Omission or Dot...

Page 7: ...177 B 2 07 Printer Mechanism Monochrome 2 of 3 178 B 2 08 Printer Mechanism Monochrome 3 of 3 179 B 2 09 Printer Mechanism Color 1 of 3 180 B 2 10 Printer Mechanism Color 2 of 3 181 B 2 11 Printer Me...

Page 8: ...nt Laurel NJ 08054 3499 Fax Number 609 222 5320 Okilink Login Name Technical Training OKIDATA is a registered trademark of Oki Electric Industry Company Ltd marques deposee de Oki Electric Industry Co...

Page 9: ...lus is the standard version monochrome The Microline 393C Plus is the color capable version The printers are capable of emulating the Epson LQ 2550 and the IBM Proprinter XL24 printers Both an RS232 C...

Page 10: ...cover and paper separator Width 25 2 inches 54 centimeters Depth 19 inches 48 3 centimeters Height 8 inches 20 3 centimeters 1 2 02 Printer Weight 37 pounds 16 8 kilograms UPS Shippable Copyright 199...

Page 11: ...put Power 120 VAC 10 15 220 VAC 10 15 1 3 02 Power Consumption Operating 180 VA Idle 50 VA 1 3 03 Power Frequency 50 60 Hz 2 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See...

Page 12: ...ient Temperature and Relative Humidity RH While operating 41 to 104 degrees Fahrenheit 5 to 40 degrees Celsius Operating humidity 20 to 90 RH While in storage 40 to 158 degrees Fahrenheit 40 to 70 deg...

Page 13: ...CY APPROVALS 1 5 01 Listings UL No UL Standard No 478 CSA No CSA Standard C22 2 220 FCC FCC Class B Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Part...

Page 14: ...Mode Speed Matrix Horizontal x Vertical cpi Letter Quality 140 cps 30 x 18 12 cpi Near Letter Quality 210 cps 15 x 18 12 cpi Utility 415 cps 9 x 17 12 cpi High Speed Draft 520 cps 7 x 17 15 cpi Copyr...

Page 15: ...acters Per Line Characters Per Line Characters Per Inch Maximum 136 10 163 12 204 15 233 17 1 272 20 PS Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business...

Page 16: ...Chapter 1 Specifications 1 6 03 Character Pitches 10 12 15 17 1 20 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates...

Page 17: ...SON Character Set I II IBM Character Set I II All Characters 16 Foreign Language Sets Zero Slashed Zero DLL 2 Sets of 128 characters Copyright 1997 Okidata Division of OKI America Inc All rights reser...

Page 18: ...ifications 1 6 05 Emulations NOTE The emulations are co resident Epson LQ IBM XL24 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX...

Page 19: ...6 06 Fonts Standard Courier Swiss Roman Orator Optional Font Cartridges Prestige Letter Gothic Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner E...

Page 20: ...SELECT Paper Park Top of Form Quiet Menu Mode Font Selection Line Feed Pitch Selection FORM FEED Print Quality Selection Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the...

Page 21: ...tion 60 horizontal x 60 vertical dots per inch DPI minimum 360 horizontal x 360 vertical dots per inch DPI maximum Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDAT...

Page 22: ...cations 1 6 09 Interface Standard Centronics Parallel 19 2K Super Speed Serial RS232C Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange B...

Page 23: ...lpi 0 167 inch 4 23 millimeters 8 lines per inch lpi 0 125 inch 3 175 millimeters Variable n 60 inch n 72 inch n 180 inch n 216 inch n 360 inch Copyright 1997 Okidata Division of OKI America Inc All r...

Page 24: ...eed Time 55 ms 6 LPI 8 0 IPS inches per second slew rate gap 1 2 6 0 IPS inches per second slew rate gap 3 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Busine...

Page 25: ...Prints the entire menu Group Selects Group Function Item Selects Item Set Selects Item Value Exit Exits Menu Mode Enters Select Copyright 1997 Okidata Division of OKI America Inc All rights reserved...

Page 26: ...riction Feed Top Rear Push Tractor Rear Optional Pull Tractor Bottom Cut Sheet Feeder Top CSF 30001 Single Bin CSF 30002 Dual Bin Copyright 1997 Okidata Division of OKI America Inc All rights reserved...

Page 27: ...eed Standard Rear Feed Standard Bottom Feed by using an Optional feed mechanism Special Features Paper Park Forms Tear Off Copyright 1997 Okidata Division of OKI America Inc All rights reserved See th...

Page 28: ...Loading Refer to the Setup Guide or Section 2 2 of this Service Handbook for information on paper loading Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Busines...

Page 29: ...om end of paper Rear Feed 2 3 inches 5 84 centimeters Bottom Feed 94 inches 2 388 centimeters Cut Sheet 93 inches 2 362 centimeters Copyright 1997 Okidata Division of OKI America Inc All rights reserv...

Page 30: ...1 Specifications 1 6 17 Paper Tear Capabilities Tear Bar for Forms Tear Off Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any...

Page 31: ...15 degrees Celsius NOTE Refer to Section Two for more information on printhead operation Printhead Gap Information Two items factor into printhead gap information 1 Printhead Gap Adjustment This is a...

Page 32: ...5 Three part forms 7 Four part forms 5 9 Envelopes Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material...

Page 33: ...ations 1 6 19 Print Modes Letter Quality Near Letter Quality Utility High Speed Draft Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange B...

Page 34: ...8 cps 172 cps 17 1 cpi 1 2 517 cps 295 cps 196 cps 20 cpi 1 2 345 cps 230 cps 10 cpi 3 300 cps 150 cps 100 cps 12 cpi 3 360 cps 180 cps 120 cps 15 cpi 3 450 cps 225 cps 150 cps 17 1 cpi 3 450 cps 257...

Page 35: ...m 2 Multi Part Carbonless 9 11 lb 35 to 40 g m 2 Multi Part Interleaf Paper 10 12 lb 38 to 45 g m 2 Carbon 9 lb 35 g m 2 Width 3 5 to 15 5 inches 8 8 to 41 9 centimeters Length 3 to 17 inches 7 62 to...

Page 36: ...ection 1 6 CAUTION Use Bottom Feed and or optional Pull Tractor for card stock and labels Transparency NOTE Roller marks may mar the transparency under high temperature high humidity conditions Weight...

Page 37: ...nded weight is specific to paper type Minimum 12 lb 45 g m 2 Maximum 100 lb 375 g m 2 1 7 06 Width NOTE The recommended width is specific to paper type Paper Minimum 3 5 inches 8 8 centimeters Maximum...

Page 38: ...tional Font Cartridges 1 8 02 RAM Total RAM 64 Kbytes Print Buffer 23 Kbytes Epson I F Buffer 8 Kbytes IBM I F Buffer 0 Kbytes minimum DLL Buffer 0 to 32 Kbytes 1 8 03 EEPROM Internal Control Menu 256...

Page 39: ...Black 2 3 million characters Cyan 1 8 million characters Magenta 1 8 million characters Yellow 1 3 million characters 1 9 03 Film Ribbon Can be used in both the Microline 393 Plus and Microline 393C...

Page 40: ...to 21 7 centimeters Paper Length 10 1 to 14 inches 25 6 to 35 6 centimeters Capacity 170 sheets 16 lb 100 sheets 24 lb 1 10 02 Pull Tractor Kit NOTES A Pull Tractor Assembly MUST be used to feed labe...

Page 41: ...00 hours of power on time 25 duty cycle 35 page density 1 11 04 Printhead Life Average 200 million characters in 10 cpi utility mode normal 25 duty 35 page density 1 11 05 Ribbon Life Approximately 4...

Page 42: ...its peripheral circuits the drive circuits The power to the Control Board is supplied by the power supply unit The power to the other electrical parts is distributed via the connectors on the Control...

Page 43: ...rogram DRAM Q18 and Q19 The Dynamic RAM chips each consisting of 64x4 Kbits are used as the Receive Buffer and Print Buffer The total buffer size is 64x8 Kbits CGROM Q7 This is a 1 Mbit ROM which stor...

Page 44: ...he serial or parallel interface Address Latch for lower 8 bits of the master MPU MMU Memory Management Unit LSI Q13 MSM73003 This LSI is connected between the Master and Slave MPUs and performs these...

Page 45: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 46: ...OM 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 bail and ribbon color model only are homed The progra...

Page 47: ...nterface Control LSI is in the parallel mode The data from the interface is received through connector CN 1 and the Interface LSI Q12 latches this data to the internal register in the LSI at the risin...

Page 48: ...a to parallel data The interface signals DTR RTS SSD and TD output from the Master MPU and Interface LSI are converted from TTL levels to RS232 C levels by the line driver Q2 and sent to the serial in...

Page 49: ...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 increases as more pins are driven The drive time dec...

Page 50: ...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 forward or reverse direction As the space motor rotates it gen...

Page 51: ...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 LF Phase 1 through LF Phase...

Page 52: ...ure by using a thermistor contained in the printhead The CPU senses this circuit every time a line is printed When printing the printhead temperature rises If the head temperature reaches approximatel...

Page 53: ...ensor 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 the paper pressure guide When the printer detects an ou...

Page 54: ...bbon Motor Drive Voltage POW ALM This signal is sent by 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 Contro...

Page 55: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 56: ...ttached to the armature strikes the ribbon and prints a dot on the paper When current is removed from the coil the magnetic field of the permanent magnet attracts the armature retracting the printwire...

Page 57: ...ing the blue head gap lever located on the right side of the printer The settings are 1 2 3 4 5 6 7 8 9 1 is the smallest narrowest gap 9 is the largest widest gap Setting Paper Type 1 12 15 lb paper...

Page 58: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 59: ...sts of the items listed below Space Motor Drive Pulley Idle Pulley Carriage Shaft Carriage Frame Space Belt Spacing Operation The carriage containing the printhead moves parallel to the platen along t...

Page 60: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 61: ...ndless ribbon with a single direction 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 th...

Page 62: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 63: ...er Pressure Guide Friction Feed When the release 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...

Page 64: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 65: ...out of sheet paper the sensor is deactivated OFF indicating a paper end condition Bottom Feed Paper End This is used with optional Pull Tractor When the release lever is in the TRACTOR FEED position t...

Page 66: ...tected by either of these sensors paper end is inhibited When rear feed paper is installed pressure is placed on the microswitch located in the left push tractor Since the switch is turned ON paper is...

Page 67: ...on the push tractor but out of the printing path Procedure Continuous Feed to Single Sheet 1 Tear off any printed pages 2 Make sure the printer is selected The SELECT lamp must be lit 3 Press PARK TO...

Page 68: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 69: ...ry paper end Continuous Sheet Rear Feed SASF 1 Push the Paper Release Lever to the Continuous Sheet side front of printer 2 Insert the paper into the push tractor DO NOT allow the front edge of the pa...

Page 70: ...these procedures could result in unnecessary service calls Cleaning procedures must be performed correctly if high print quality is to be achieved 3 1 02 Maintenance Items The following items are requ...

Page 71: ...ocedures when replacing assemblies and units 11 When replacing the main control board be sure to remove any socketed PROMS and EEPROMS Replacement printed circuit boards are shipped WITHOUT these item...

Page 72: ...Carriage Shaft 3 2 18 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 73: ...nd disassembling a unit which is operating normally If you decide to perform disassembly during this training Okidata recommends that you perform only the disassembly procedures for RSPL items All oth...

Page 74: ...Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 75: ...installing the printhead pull the printhead towards the stopper in the direction of Arrow A Perform the printhead gap adjustment after installation Refer to Section 3 3 of this Service Handbook for fu...

Page 76: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 77: ...ead 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 12 Copyright 1997 Okidata Division of OKI America Inc All rights reserved...

Page 78: ...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 B 2 12 B 2 13 Copyright 1997 Okidata Division of OKI America...

Page 79: ...back and tilt it towards the front to remove it NOTES When installing the upper cover assembly perform the actions listed below Move the release lever 6 towards the front of the printer Move the bail...

Page 80: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 81: ...restige Font Cartridge Option B 2 03 B 2 14 P N 70016401 Cartridge 32 Kbyte RAM Expansion Option B 2 03 B 2 14 P N 53478601 Knob Platen RSPL B 2 03 P N 50212427 Cover Middle ML393 RSPL B 2 02 P N 5021...

Page 82: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 83: ...older 4 by moving it upward and then pulling toward the front of the printer 5 Remove the three mounting screws 5 6 Open the eleven claws and detach the operator panel 6 from the operator panel holder...

Page 84: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 85: ...ove in the base tray 7 Place the board into the groove 8 in the shield cover then attach the shield cover When replacing the main control board be sure to remove any socketed PROMS and EEPROMS Replace...

Page 86: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 87: ...to use the 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 D...

Page 88: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 89: ...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 f...

Page 90: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 91: ...the bail and remove the platen assembly 3 NOTE Perform the line feed belt tension adjustment 3 3 02 after replacing the line feed drive belt When cleaning refer to Section 3 4 of this Service Handbook...

Page 92: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 93: ...ove 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 0 2 after installing the line feed motor P N 5650...

Page 94: ...rtridge bracket 4 8 Remove the mounting screw 5 9 Detach the connector clamp 6 10 Detach the head cable connector 7 from the carriage frame 8 11 Lift the front of the printer mechanism and remove the...

Page 95: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 96: ...se the front of the printer mechanism 4 Disconnect cables CN2 1 and CN3 2 from the sensor board 3 5 Remove the three sensor board mounting screws 4 6 Disconnect connector CN1 5 and detach the sensor b...

Page 97: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 98: ...the ribbon feed assembly 4 NOTE When assembling install the ribbon drive assembly so that the gear teeth contact properly 5 The gears must not bind together The ribbon cartridge balance spring is NOT...

Page 99: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 100: ...crews 1 5 While pushing the belt pulley bracket 2 to the left temporarily tighten the two screws This will ease the tension on the space belt 6 Remove the three space motor mounting screws 3 7 Remove...

Page 101: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 102: ...2 14 5 Remove the mounting screw 1 6 Detach the belt clamp 2 7 Remove the idle pulley 3 from the idle pulley shaft 4 and detach the mini pitch space belt 5 NOTE When installing the belt clamp make su...

Page 103: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 104: ...unting screws 2 5 Detach the bail ribbon motor assembly 3 NOTE When assembling install the bail ribbon motor assembly so that the gear teeth contact properly The gears must not bind together P N 56506...

Page 105: ...6 by pulling to the left 8 Remove the right bail arm 7 by pulling to the right while expanding the clamps 8 9 Detach the right bail arm from the indicator shaft assembly NOTE Installation The left bai...

Page 106: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 107: ...o stopper cushion rings 6 8 Slide the carriage shaft 7 to the right and remove the carriage 8 and round spacer Not Shown 9 Continue sliding the carriage shaft to the right then remove the carriage sha...

Page 108: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 109: ...p Adjust RSPL B 2 07 B 2 10 P N 50705701 Ring Cushion Stopper B 2 08 B 2 11 P N 51110301 Shaft Carriage B 2 08 B 2 11 P N 50057601 Carriage Black Assembly B 2 12 P N 50069401 Carriage Color Assembly B...

Page 110: ...this Service Handbook 8 Remove the paper pressure bar 5 by sliding it to the right 9 Using needle nose pliers squeeze the nylon latch 7A to release the cut sheet paper end sensor 7B which is located a...

Page 111: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 112: ...4 Using a needle nose pliers detach the nylon cable clamp 3 and remove the harness and switches from the printer mechanism 5 The printhead gap indication bracket is the plastic piece imprinted with nu...

Page 113: ...cable clamp 4 5 Slide the upper drive shaft 5 to the left and remove it 6 Slide the lower drive shaft 6 to the left 7 Remove the upper center guide 7 being careful not to lose the friction piece 8 8...

Page 114: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 115: ...drive gears in the same direction 5 Position the groove of the upper center guide 7 behind the paper pressure guide 14 6 The left tractor assembly 10A must be positioned between the two locking tabs...

Page 116: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 117: ...he printer 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 mountin...

Page 118: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 119: ...ance Sections 3 2 23 through 3 2 28 apply to the Microline 393C Plus Color Model Only Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange B...

Page 120: ...ng Ribbon Shift Arm 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 53478901 A...

Page 121: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 122: ...ntenance 3 2 24 Roller 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...

Page 123: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 124: ...n shift arm mounting bolt 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 p...

Page 125: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business...

Page 126: ...Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 127: ...ation When installing 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...

Page 128: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 129: ...washer 5 Remove the ribbon shift cam 3 NOTE Installation 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 the colo...

Page 130: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 131: ...ter mechanism 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 Installation Perfo...

Page 132: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 133: ...aintenance Sections 3 2 29 through 3 2 35 apply to the CUT SHEET FEEDER OPTION Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for...

Page 134: ...r 1 4 Move the paper lock lever 2 towards the back 5 Remove the friction sheets 5 from the sheet guide A 3 and sheet guide B 4 NOTE Installation When installing new friction sheets remove the peel off...

Page 135: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 136: ...it 10 11 Move the rear bin unit 11 in the direction of arrow D to disengage the lock plate 8 from the post 7 on the front bin unit 10 12 Lift the rear bin unit 11 in the direction of arrow C and pull...

Page 137: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 138: ...e the collar 3 7 Remove the left side cover 4 of the front bin unit 8 Remove the three screws 5 9 Remove the bolt 6 10 Remove the collar 7 11 Remove the right side cover 8 of the front bin unit 12 Rem...

Page 139: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 140: ...haped snap ring 4 8 Pull the hopper shaft 5 in the direction of arrow B 9 Remove the left roller support 6 10 Remove the right roller support 7 11 Remove the roller H 8 The collar 9 will also be remov...

Page 141: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 142: ...front bin unit 3 2 30 4 Remove the left side cover from the front bin unit 3 2 31 5 Disconnect connectors CN1 1 and CN2 2 6 Remove the three screws 3 7 Remove the two screws 4 8 Remove the control boa...

Page 143: ...ear bin unit from the front bin unit 3 2 30 4 Remove the left side cover from the front bin unit 3 2 31 5 Disconnect connector CN1 2 from the control board 1 6 Remove the three screws 3 7 Remove the c...

Page 144: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 145: ...vers from the front bin unit 3 2 31 5 Remove the control board 3 2 33 6 Remove the four screws 1 7 Remove the right sheet guide assembly 2 8 Pull out the connection cord 4 from the groove A in the sid...

Page 146: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 147: ...es may be required when replacing either consumables or parts The disassembly assembly procedures list the required adjustments and refer you to this section Failure to perform these procedures may re...

Page 148: ...dge in the printer before testing Procedure 1 Remove the printhead 3 2 01 2 Remove the ribbon guide 3 2 02 3 Remove the ribbon protector 3 2 03 4 Install the printhead 5 Set the printhead gap lever to...

Page 149: ...Remove the printhead 15 Install the ribbon protector ribbon guide and printhead CAUTION Be sure to pull the printhead toward the stopper whenever it is installed Copyright 1997 Okidata Division of OK...

Page 150: ...Rotate the platen pulley at least once before making the adjustment 2 Loosen the three line feed motor mounting bolts 1 3 Using a tension gauge apply 5 pound of pressure at point A 4 Adjust the line f...

Page 151: ...3 2 28 Procedure Ribbon Home Adjustment 1 Remove the upper cover assembly 3 2 04 2 Remove the printer mechanism 3 2 08 3 Rotate the ribbon shift cam 1 so the ribbon guide 2 is at the top of the post...

Page 152: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 153: ...ctory defaults LINE FEED Hold during power ON Activate Font Test To end Font Test press SELECT QUIET Press with printer deselected OFF LINE Activate Menu To exit press SELECT PARK TOF Hold during powe...

Page 154: ...o customize the printers settings and features The Menu is made up of a number of Groups Each Group has a list of Items Each Item has several Settings Copyright 1997 Okidata Division of OKI America In...

Page 155: ...Quality LQ 7 Go to 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 li...

Page 156: ...be lit 4 Press QUIET to enter Menu Mode 5 The line shown below will print Font Print Quality LQ 6 Press PRINT to print the current Menu 7 Press EXIT to save any changes and exit Menu Mode 8 The printe...

Page 157: ...ML393 ML393CPlus Chapter 3 Maintenance Sample Menu Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this materia...

Page 158: ...e Triple Smoothing No Yes General Control Emulation Mode Epson LQ IBM PPR IBM X24 AGM Graphics Bi directional uni directional Paper Out Override No Yes Print Registration 5 4 3 2 1 0 1 2 3 4 5 Operato...

Page 159: ...nterface Max Receive Buffer 1 Line 8 K 23 K 40 K Optional Print Suppress Effective No Yes Auto Feed XT Invalid Valid Serial Interface Parity None Odd Even Appears ONLY when Serial Data 7 8 Bits 8 Bits...

Page 160: ...lt settings follow this procedure 1 Print the Menu When the menu is reset ALL customized settings ARE LOST Printing the Menu provides a reference of customized settings 2 Power OFF the printer 3 Press...

Page 161: ...r Limited Operation Procedure CAUTION Check with the system manager BEFORE changing the setting for the operator panel function 1 Verify that paper is loaded and that the ribbon is installed 2 Power O...

Page 162: ...ELECT until the printer is OFF LINE SELECT will NOT be lit 3 The red line on the plastic ribbon protector indicates the base of the printing line Use this red line as a guide 4 Press and hold PARK whi...

Page 163: ...tract from the paper path 5 Move the paper selection to the single sheet position towards the back of the printer 6 Raise the paper support to its upright position 7 Align the left paper guide with th...

Page 164: ...packages pause occasionally while sending data to the printer If the pause lasts more than the selected interval the paper will advance to the tear off position until more data is received No data is...

Page 165: ...d exit Menu Mode 12 The printer will go ON LINE SELECT will light Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates t...

Page 166: ...2 Verify that the ribbon is correctly installed 3 Verify that the width of the installed paper matches the paper width menu setting 4 Press SELECT and place the printer OFF LINE SELECT will NOT be lit...

Page 167: ...on procedures are not performed properly the printer will require more frequent cleaning Excessive lubricant attracts dust and accumulations build up quickly Keeping the covers in place and performing...

Page 168: ...End Sensor Wipe with dry cotton swab Paper Bail Sensor Wipe with dry cotton swab Platen Wipe clean with soft cloth and platen cleaner Printer Cover Clean with soft cloth and all purpose cleaner Copyri...

Page 169: ...per dust is the most frequent cause of print quality problems in a dot matrix printer When lubricating the printer refer to the lubrication diagrams on the following pages Each lubrication point lists...

Page 170: ...enance 3 5 02 Lubrication Schedule Once a year or Every 600 hours of operating time Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX...

Page 171: ...ars or cause print problems Type Amount Diagram Designation Oil Abundant PM A Machine Oil Medium 3 4 Drops PM B 10w 30 or equivalent Small 1 Drop PM C Grease Abundant GEP A Alvania grease 2 EP Moly lu...

Page 172: ...ce Belt Ribbon Tractor Pins Platen Assembly Rubber Face Pressure Roller Rubber Face Head Cable Space Motor Printed Circuit Board Electrical Contacts and Connections Teeth of the gears in the Gear Case...

Page 173: ...or Left and Right Sides of Printer Type Amount Diagram Designation Oil Abundant PM A Machine Oil Medium 3 4 Drops PM B 10w 30 or equivalent Small 1 Drop PM C Grease Abundant GEP A Alvania grease 2 EP...

Page 174: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 175: ...haft Idle Gear Type Amount Diagram Designation Oil Abundant PM A Machine Oil Medium 3 4 Drops PM B 10w 30 or equivalent Small 1 Drop PM C Grease Abundant GEP A Alvania grease 2 EP Moly lube grease Med...

Page 176: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 177: ...Assembly Type Amount Diagram Designation Oil Abundant PM A Machine Oil Medium 3 4 Drops PM B 10w 30 or equivalent Small 1 Drop PM C Grease Abundant GEP A Alvania grease 2 EP Moly lube grease Medium T...

Page 178: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 179: ...oints Color Type Amount Diagram Designation Oil Abundant PM A Machine Oil Medium 3 4 Drops PM B 10w 30 or equivalent Small 1 Drop PM C Grease Abundant GEP A Alvania grease 2 EP Moly lube grease Medium...

Page 180: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 181: ...ints Options Type Amount Diagram Designation Oil Abundant PM A Machine Oil Medium 3 4 Drops PM B 10w 30 or equivalent Small 1 Drop PM C Grease Abundant GEP A Alvania grease 2 EP Moly lube grease Mediu...

Page 182: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 183: ...ing the materials from Step 1 3 6 02 All Other Returns CAUTION The product MUST be returned in the original packaging The product MUST be returned with ALL originally supplied factory items Be sure to...

Page 184: ...which RAP should be used to resolve the problem with the machine 6 Section 4 8 provides the procedures for various printer tests 7 Section 4 9 lists the resistance check points 8 Section 4 2 lists me...

Page 185: ...umber 01 07 5 Firmware Part Number YR4077 1289 6 Character Generator Revision Number 01 00 7 Character Generator Part Number Not Shown 1 2 3 4 5 6 Copyright 1997 Okidata Division of OKI America Inc Al...

Page 186: ...ilink II provides round table discussions on technical problems Errors and corrections in the training materials are listed in the Training Section of Okilink II The Technical Service Bulletins also k...

Page 187: ...ountry Telephone and Fax Numbers with area country access codes Product Name Units Serial Number Firmware Revision Level Description of Problem Document Name with page number or procedure with error o...

Page 188: ...efer to the Service Center Reference Guide for information on accessing Okilink II 4 3 03 Faxable Facts Okidata s Faxable Facts is an automated fax document retrieval system It is maintained by Okidat...

Page 189: ...ng the main control board be sure to remove any socketed PROMS and EEPROMS Replacement printed circuit boards are shipped WITHOUT these items When removing PROMs and EEPROMs you MUST follow standard E...

Page 190: ...es freely 4 Record the status of the PRINT QUALITY and CHARACTER PITCH lamps 5 Refer to the Alarm Lamp Codes Table Section 4 6 6 Locate the error 7 Perform the designated corrective action Operational...

Page 191: ...mbles 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 Section 4 6 NO The problem occurs during printing Refer to t...

Page 192: ...cifications Paper specifications can be found in Section 1 of this Service Handbook 3 Always place the Head Gap Lever in the position appropriate for the paper that you are using Setting Paper Type 1...

Page 193: ...ps jamming Verify that the top of form is set so that the paper is held in place by the bail bar If the top edge of the page is below the bail it will catch on the bail as it advances Do not use the F...

Page 194: ...s out 3 Press QUIET to enter Menu Mode 4 The first Group Item Setting will print 5 Press GROUP until GENERAL CONTROL prints 6 Press ITEM until RESET INHIBIT prints 7 Press SET until VALID prints 8 Pre...

Page 195: ...LATION MODE prints 7 Press SET until the desired emulation prints 8 Press EXIT to save the settings and exit the Menu Mode If the emulation is correct check the software documentation on how to select...

Page 196: ...le The affected printers have a self test revision of 1 16 and are Epson IBM Models The ROM being replaced is Q1 of the Epson IBM personality module Any printer with a self test revision of 1 22 has a...

Page 197: ...693 corrects this problem It also corrects premature power supply failures resulting from a graphics speed running above the specified duty cycle FCO 7681 FCO 7693 includes a program ROM insulating se...

Page 198: ...ructions and a product update sheet The update sheet lists the functional enhancements incorporated into self test revision 2 04 The ROM at location Q6 of the main control board is replaced The self t...

Page 199: ...these interface signals Firmware Revision 2 04 and above changes the printer menu The feature CPU Compensation is added Two settings are available for this feature Standard and Special Standard This...

Page 200: ...roline 393C Plus Jumper SP2 has been added and is set on the A side for the masked ROM change NOTE The serial numbers for the production cut in of the change are listed below Configuration Serial Numb...

Page 201: ...s Jumper Plug SP3 should be shorted for the Microline 393C Plus Jumper SP2 has been added and is set on the A side for the masked ROM change NOTE The serial numbers for the production cut in of the ch...

Page 202: ...rol board has been modified EPROM socket location Q6 accepts four additional pins Either a 28 pin EPROM or a 32 pin Masked ROM may be installed with no changes and full compatibility No jumper changes...

Page 203: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 204: ...r is not within specification Refer to Section One for paper specification Uneven Print Density Possible Causes Printhead gap not within specification Perform the printhead gap adjustment Defective pl...

Page 205: ...tive line feed motor Replace the line feed motor Drifting Margin Possible Causes Power OFF the printer Move the carriage assembly The carriage should move smoothly If it does not remove the cause of t...

Page 206: ...entify both the error condition and the recommended corrective action for each condition NOTE The Alarm Codes Table only applies in situations when the ALARM LAMP is flashing Alarm Codes Table Print Q...

Page 207: ...board ON ON ON Print Over Run Error 51 Replace control board ON ON O N Print Stop Error 52 Replace control board ON ON O N ON Head Homing Error 53 Refer to RAP 03 ON ON ON O N EEPROM Write Error 56 Re...

Page 208: ...ine Feed Problem N A Refer to RAP 08 Operator Panel Problem N A Refer to RAP 09 Data Receiving Problem N A Refer to RAP 10 Ribbon Shift Problem N A Refer to RAP 11 Copyright 1997 Okidata Division of O...

Page 209: ...All RAPs begin with a START statement followed by questions or another type of statement 4 7 02 RAP Index Description RAP Number Power Lamp Does Not Light 01 Space Error ALARM 57 02 Head Homing Error...

Page 210: ...Alarm Light Lit 10D Color Ribbon Shift Problems 11 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material...

Page 211: ...the power supply unit Has the problem been resolved YES End of procedure NO Go to the next step listed below NO Are the 5 vdc and 38 vdc present on the control board Check for 38 vdc at both ends of...

Page 212: ...resent on the control board Check on both ends of the capacitor C2 NO Are cables CN1 and CN5 on the control board correctly connected YES Replace the control board NO Connect them correctly Has the pr...

Page 213: ...nd of procedure NO Contact Okidata Technical Support NO Are cables CN3 and CN7 on the control board correctly connected to the power supply unit YES Replace the power supply unit NO Correctly connect...

Page 214: ...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 control board connected correctly NO Connect it correctly YES Is the...

Page 215: ...ct 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 of the sensors on the sensor board YES Clean the sensors NO Is...

Page 216: ...the problem been resolved YES End of procedure NO Go to A NO Are cables CN3 and CN7 on the control board properly connected to the power supply unit NO Connect them correctly YES Replace the power su...

Page 217: ...ge 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 replacement adjust the backlash between the space motor gear...

Page 218: ...eign 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 correctly YES Is cable CN101 on the interface connector board con...

Page 219: ...t it correctly YES Is cable CN10 on the operator panel connected correctly NO Connect it correctly YES Replace the operator panel Has the problem been resolved YES End of procedure NO Replace the cont...

Page 220: ...e cable connected correctly NO Connect it correctly YES Is cable CN101 on the interface connector board connected correctly NO Connect it correctly YES Is cable CN6 on the operator panel connected cor...

Page 221: ...of procedure NO Replace the control board Has the problem been resolved YES End of procedure NO Perform the following 1 Replace the interface connector board 2 Replace the cable connected to CN6 on t...

Page 222: ...e voltage Check at both ends of C8 for the negative voltage NO Replace the power supply unit YES Refer to RAP 10B Has the problem been resolved YES End of procedure NO Replace the power supply board H...

Page 223: ...rrectly NO Perform the operations listed below 1 Correctly connect CN103 on the interface connector board 2 Replace the sheet feeder assembly L YES Does the single sheet end sensor function correctly...

Page 224: ...m been resolved YES End of procedure NO Contact Okidata Technical Support Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any u...

Page 225: ...bbon installed properly NO Correct the ribbon installation YES Go to C B Are CN4 on the control board and CN2 on the sensor board connected correctly NO Connect the cables correctly YES Replace the co...

Page 226: ...s listed below 1 Ribbon shift cam and gear 2 Ribbon shift cam lever assembly Are they normal YES Replace the sensor board NO Correct the installation or replace the defective assembly Has the problem...

Page 227: ...xadecimal Dump Mode The Rolling ASCII and Font Tests check print operations The Serial Interface Loopback Test checks the operation of the serial interface board The Hexadecimal Dump Mode checks the d...

Page 228: ...erforming service or when contacting Okidata Have this test available during your service call Procedure CAUTION If 13 6 inch Paper Width is selected in the Menu and you run this test with 8 5 inch wi...

Page 229: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 230: ...e Width Height LQ SWISS 18 point with Outline LQ SWISS 18 point with Shadow LQ SWISS Triple Width Height Header Information At the top of the printout you will see the Printer Model Emulation Country...

Page 231: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 232: ...the messages listed below prints If the message OK prints the serial interface function has been tested and no problems were found If the message IF BAD prints the signal logic was tested and a probl...

Page 233: ...Loopback Connector Configuration 1 Jumper the following pins together Pin 2 to Pin 3 Pin 4 to Pin 5 Pin 8 to Pin 11 Pin 6 to Pin 20...

Page 234: ...cable requirements on the computers end The printer has the following cable requirements Shielded RS 232C cable UL and CSA approved No more than 50 feet long Cannon DB 25P plug or equivalent with 25 p...

Page 235: ...Set Ready DSR To Printer Indicates that data can be sent 7 Signal Ground SG Ground Ground 8 to 10 Not Used 11 Supervisory Send Data SSD From Printer Indicates that the printer is not ready to receive...

Page 236: ...IBM 9 Pin Cable Configuration Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 237: ...CHR 27 0 CHR 30 This is an example of hexadecimal dump Below is the same line as it would appear in Hex Dump Mode This is an example of a hexadecimal dump 1B 30 1E 54 68 69 73 20 69 73 20 61 6E 20 65...

Page 238: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 239: ...lus Chapter 4 Failure Analysis 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...

Page 240: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 241: ...ysis 4 9 02 Printhead Resistance Check The resistance of each coil should be about 4 5 ohms Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exch...

Page 242: ...s 4 9 03 Line Feed Motor Resistance Check The resistance of each coil should be about 5 6 ohms Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner E...

Page 243: ...is 4 9 04 Space Motor Resistance Check The resistance of the motor should be about 11 4 ohms Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exc...

Page 244: ...sis 4 9 05 Ribbon Motor Resistance Check The resistance of each coil should be about 34 ohms Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exc...

Page 245: ...printed circuit boards used in the unit The following areas are covered Firmware Fuses Jumpers Sensors Switches Test Points Where an item is not applicable the word NONE will be listed Copyright 1997...

Page 246: ...pter A Board Diagrams A 2 INDEX TO CHARTS Description Board Designation Section Main Control Board LQEM A 2 01 Power Supply N A A 2 02 Interface Connection Assembly LQPN A 2 03 Sensor Board LQEW or LP...

Page 247: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 248: ...HORTED External ROM SP3 OPEN Monochrome Model SHORTED Color Model Sensors NONE Switches NONE Test Points 38vdc Printhead SP Motor LF Motor and Bail Ribbon motor drive voltage Check on both ends of Cap...

Page 249: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 250: ...V Jumpers NONE Sensors NONE Switches NONE Test Points CN 1 Pin 6 38vdc CN 2 Pin 6 8vdc Pin 7 8vdc Pin 4 5vdc Pin 2 Signal Ground Pin 3 Signal Ground Copyright 1997 Okidata Division of OKI America Inc...

Page 251: ...Centronics interface invalid SP102 A Side I Prime Signal of Centronics interface is valid B Side I Prime Signal of Centronics interface is invalid SP103 A Side 5 vdc is output to pin 18 of Centronics...

Page 252: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 253: ...oard LQEW or LPRW Firmware NONE Fuses NONE Jumpers NONE Sensors Bottom Paper Sensor Bail Arm Sensor Ribbon Shift Sensor Located on sensor board in color model only CN1 Connector for Friction Feed Pape...

Page 254: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 255: ...rator Panel Board LQSX Firmware NONE Fuses NONE Jumpers NONE Sensors NONE Switches NONE Test Points NONE Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business...

Page 256: ...rent Part Numbers Okidata has made every effort to include current part numbers in this Service Handbook at the time of publishing However technical information frequently changes These changes often...

Page 257: ...r to the Service Center Reference Guide for information on accessing these resources Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BP...

Page 258: ...chines are designed to work exclusively with Okidata consumables By using genuine Okidata consumable products the investment made in the equipment is protected Document A document is a printed item wh...

Page 259: ...and technical information updates Okidata distributes the TSBs through Okilink II The TSBs are issued monthly Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Bus...

Page 260: ...Service Authorization for a specific product must be obtained before a Dealer can submit warranty claims Direct questions regarding the Service Center Reference Guide to Okidata Dealer Service Refer...

Page 261: ...chanism Monochrome 2 of 3 B 2 07 Printer Mechanism Monochrome 3 of 3 B 2 08 Printer Mechanism Color 1 of 3 B 2 09 Printer Mechanism Color 2 of 3 B 2 10 Printer Mechanism Color 3 of 3 B 2 11 Carriage A...

Page 262: ...Okidata P N Oki J P N Description Comments Refer to B 1 02 Disassembly Procedure 128 62405001 N A Printer Microline 393 Epson Black 120 V N A 128 62405002 N A Printer Microline 393 Epson Black 220 24...

Page 263: ...N A Printer Microline 393 Plus Black 220 V N A 128 62408301 N A Printer Microline 393C Plus Color 120 V N A 128 62408302 N A Printer Microline 393C Plus Color 220 V N A Copyright 1997 Okidata Division...

Page 264: ...B Illustrated Parts Listing B 2 02 Upper Cover 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...

Page 265: ...6062G7 Cover Access Color RSPL 3 2 04 86 50212426 2PA4016 4723G26 Cover Middle ML393C RSPL 3 2 04 125 53482901 N A Lever Bail 3 2 04 126 51001901 N A Separator Paper 3 2 04 127 53482801 N A Guide Shee...

Page 266: ...vice Guide ML393 ML393CPlus Chapter B Illustrated Parts Listing B 2 03 Printer Unit General Assembly 1 of 2 Part numbers are subject to change Refer to Okilink II for current part numbers and pricing...

Page 267: ...ion 9 Pin RSPL 3 2 22 18 56614801 4YS4011 6253G3 Cord Power Connection 13 Pin RSPL 3 2 22 19 56609701 3YS4011 1315P1 Cord AC Power 120 vac RSPL 3 2 01 20 56624101 3YS4011 1265P1 Cable AC 220V ML Right...

Page 268: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 269: ...vice Guide ML393 ML393CPlus Chapter B Illustrated Parts Listing B 2 04 Printer Unit General Assembly 2 of 2 Part numbers are subject to change Refer to Okilink II for current part numbers and pricing...

Page 270: ...4 2PA4016 4722G4 Cover Acoustic Pull Tractor Option RSPL N A 125 53482901 N A Lever Bail 3 2 04 187 56301703 Fuse 2A 125 V 3 2 06 Items 104 105 and 106 are in the same location Item 104 Bottom Guide M...

Page 271: ...ng information Item Okidata P N Oki J P N Description Comments Refer to B 1 02 Disassembly Procedure 6 55050601 4YA4042 1473G1 PCB Operator Panel LQSX RSPL 3 2 05 7 53479103 3PP4043 2712G3 Panel Opera...

Page 272: ...1 3PP4016 5387P1 Lever Cover Open 3 2 05 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx...

Page 273: ...rvice Guide ML393 ML393CPlus Chapter B Illustrated Parts Listing B 2 06 Printer Mechanism Monochrome 1 of 3 Part numbers are subject to change Refer to Okilink II for current part numbers and pricing...

Page 274: ...2 09 26 51214501 3PP4043 2466P1 Gear Platen A RSPL 3 2 09 27 51215001 4PP4043 2465G1 Pulley Platen RSPL 3 2 09 28 50054501 3YX4043 2561G1 Tractor Push Left Assembly RSPL 3 2 21 29 50054601 3PA4043 256...

Page 275: ...Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 276: ...rvice Guide ML393 ML393CPlus Chapter B Illustrated Parts Listing B 2 07 Printer Mechanism Monochrome 2 of 3 Part numbers are subject to change Refer to Okilink II for current part numbers and pricing...

Page 277: ...21 45 50054301 4PA4043 2584G1 Assembly Ribbon Feed RSPL 3 2 13 46 50910701 4PP4043 2628P1 Spring Bail Arm Left RSPL 3 2 17 47 50910801 4LB 193100 2 Spring Bail Arm Right RSPL 3 2 17 48 56506301 3PP404...

Page 278: ...Partner Exchange BPX for any updates to this material http bpx okidata com...

Page 279: ...rvice Guide ML393 ML393CPlus Chapter B Illustrated Parts Listing B 2 08 Printer Mechanism Monochrome 3 of 3 Part numbers are subject to change Refer to Okilink II for current part numbers and pricing...

Page 280: ...Paper Chute 3 2 19 111 51005401 3PP4043 2548P1 Beam Slide N A 112 51215601 4PP4043 2596G1 Pulley Idle 3 2 15 113 53327801 4PP4044 1282P1 Shaft Idle Pulley 3 2 15 114 51110301 4PP4043 2565P1 Shaft Carr...

Page 281: ...19 184 Locking Shaft 3 2 21 185 Upper Drive Shaft 3 2 21 186 Lower Drive Shaft 3 2 21 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange B...

Page 282: ...Service Guide ML393 ML393CPlus Chapter B Illustrated Parts Listing B 2 09 Printer Mechanism Color 1 of 3 Part numbers are subject to change Refer to Okilink II for current part numbers and pricing inf...

Page 283: ...ten RSPL 3 2 09 28 50054501 3YX4043 2561G1 Tractor Push Left Assembly RSPL 3 2 21 29 50054601 3PA4043 2562G1 Tractor Push Right Assembly RSPL 3 2 21 30 51002301 4PP4043 2451P1 Friction Piece RSPL 3 2...

Page 284: ...End RSPL 3 2 19 41 51214401 4PP4043 2458P1 Gear Idle Release Lever RSPL 3 2 09 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for...

Page 285: ...Service Guide ML393 ML393CPlus Chapter B Illustrated Parts Listing B 2 10 Printer Mechanism Color 2 of 3 Part numbers are subject to change Refer to Okilink II for current part numbers and pricing inf...

Page 286: ...0201 5LR 193134 1 Gear Idle Bail Arm RSPL 3 2 17 50 53478401 3PP4043 2504P1 Lever Printhead Gap Adjust RSPL 3 2 18 51 50054401 4PA4043 2711G1 Assembly Indicator Shaft RSPL 3 2 17 52 53478501 3PP4043 2...

Page 287: ...A4042 1462G2 PCB Sensor LQEW 2 Color RSPL 3 2 12 97 50910901 4PB4043 3240P1 Spring Brake A RSPL 3 2 27 98 50911001 4PP4043 2783P1 Spring Brake B Color RSPL 3 2 26 Copyright 1997 Okidata Division of OK...

Page 288: ...Service Guide ML393 ML393CPlus Chapter B Illustrated Parts Listing B 2 11 Printer Mechanism Color 3 of 3 Part numbers are subject to change Refer to Okilink II for current part numbers and pricing inf...

Page 289: ...y Paper Chute 3 2 19 111 51005401 3PP4043 2548P1 Beam Slide N A 112 51215601 4PP4043 2596G1 Pulley Idle 3 2 15 113 53327801 4PP4044 1282P1 Shaft Idle Pulley 3 2 15 114 51110301 4PP4043 2565P1 Shaft Ca...

Page 290: ...2 19 Locking Shaft 3 2 21 Upper Drive Shaft 3 2 21 Lower Drive Shaft 3 2 21 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any...

Page 291: ...ange 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 55 51303101 4PB4044 1492P3 Belt Mini Pit...

Page 292: ...3 2 11 96 50057601 2YX4043 2610G3 Carriage Black Assembly RSPL 3 2 18 119 N A N A Spacer Round 3 2 18 120 51005501 4PP4044 1340P1 Guide Slide 3 2 18 Copyright 1997 Okidata Division of OKI America Inc...

Page 293: ...ent part numbers and pricing information Item Okidata P N Oki J P N Description Comments Refer to B 1 02 Disassembly Procedure 55 51303101 4PB4044 1492P3 Belt Mini Pitch Space RSPL 3 2 15 56 56614201...

Page 294: ...368 1 Clamp Belt RSPL 3 2 15 93 N A N A Screw 3 2 24 94 N A N A Clamp 3 2 11 95 50069401 2YX4043 2719G3 Carriage Color Assembly RSPL 3 2 18 100 50605701 4PP4043 2615P1 Post Ribbon Guide Color RSPL 3 2...

Page 295: ...Page 185 Service Guide ML393 ML393CPlus Chapter B Illustrated Parts Listing B 2 14 Options Part numbers are subject to change Refer to Okilink II for current part numbers and pricing information...

Page 296: ...601 3PA4016 4722G1 Cover Acoustic Pull Tractor Option N A 123 50212604 2PA4016 4722G4 Cover Acoustic Pull Tractor Option RSPL N A 124 53480901 N A Cut Sheet Feeder Output Tray Option N A 130 55033301...

Page 297: ...RS232 C Serial Interface Option Both 3 2 01 3 2 04 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Business Partner Exchange BPX for any updates to this material...

Page 298: ...numbers and pricing information Item Okidata P N Oki J P N Description Comments Refer to B 1 02 Disassembly Procedure 90 50057401 4PA4043 2684G1 Tractor Pin Left Pull Tractor Assembly Option N A 91 50...

Page 299: ...Lock N A 177 53535501 2PP4043 2687P1 Frame Side Right N A 178 53535601 2PP4043 2686P1 Frame Side Left N A 179 54123306 P SW W 3 6 23D Screw N A 180 51223501 4PP4043 2689P1 Gear Drive N A Copyright 199...

Page 300: ...ge 187 Service Guide ML393 ML393CPlus Chapter B Illustrated Parts Listing B 2 16 Packing Materials Part numbers are subject to change Refer to Okilink II for current part numbers and pricing informati...

Page 301: ...Item Okidata P N Oki J P N Description Comments Refer to B 1 02 Disassembly Procedure 138 53460209 Overpack ML393 N A 139 53477201 Box ML393 Epson N A...

Page 302: ...nd Cap Left ML393 N A 144 53528902 End Cap Right ML393 N A 145 53532001 Box ML393 N A 146 53532101 Box ML393 Color N A 147 53532501 Foam Spacer ML393 N A Copyright 1997 Okidata Division of OKI America...

Page 303: ...ki J P N Description Comments Refer to B 1 02 Disassembly Procedure 108 52103601 N A Cartridge Ribbon Black Consumable 3 2 01 108 52103701 N A Cartridge Ribbon Color Consumable 3 2 01 108 52103801 N A...

Page 304: ...e 393 Plus 393C Plus Service Training Document Includes 2 14 B N A 1 C 58218602 N A Kit Microline 393 Plus 393C Plus Service Training Document Includes 2 7 C N A 188 58057001 N A Guide Customer Servic...

Page 305: ...Literature Order Form Fax the completed form to Okidata Marketing Communications Obtain this form by faxing a request to Okidata Marketing Communications Refer to the Service Center Reference Guide fo...

Page 306: ...20 Document Both N A To order Marketing Literature complete an Okidata Marketing Literature Order Form Fax the completed form to Okidata Marketing Communications Obtain this form by faxing a request t...

Page 307: ...us Service Training Document Includes 2 14 B N A 2 B 52043101 N A Label Kit Document Part of 1 B N A 3 B 58057901 N A Letter Cover Document Part of 1 B N A 4 B 59241701 N A Guide Study Document Part o...

Page 308: ...Label Kit Document Part of 1 C N A 3 C 58057902 N A Read Me First Document Part of 1 C N A 4 C 59241602 N A Handbook Service Document Part of 1 C N A 5 C 59251002 N A Guide Microline 393 393C Plus Re...

Page 309: ...P N 58215501B Microline 320 321 Service Training Kit This kit was replaced by P N 58215502 This kit was part of the Microline 300 Series Training Kit P N 58215601 Item Okidata P N Oki J P N Descriptio...

Page 310: ...Z 59230301 N A Guide Reference Microline 390 391 Document Part of 1 Z N A 7 Z 59230601 N A Manual Training Microline 390 391 Document Part of 1 Z N A 8 Z 59231001 M 520656 Issue 1A Manual Maintenance...

Page 311: ...t of 1 A N A 7 A 59228001 N A Package Training Microline 393 Document Part of 1 A N A 8 A 59227402 M 520565 2D Manual Maintenance Cut Sheet Feeder 3001 3002 Document Part of 1 A N A Copyright 1997 Oki...

Page 312: ...oline 393C are high speed dot matrix printers which utilize a 24 pin printhead The Microline 393 is a standard version single color output The Microline 393C is a color capable version The printers ar...

Page 313: ...C 2 03 Line Feed Time 55 ms 6 LPI 8 0 IPS inches per second slew rate gap 1 2 6 0 IPS inches per second slew rate gap 3 C 2 04 Paper Feed Method Built in push tractor Friction feed C 2 05 Paper Out D...

Page 314: ...Set IBM Character Set I and Set II IBM Proprinter All Character Set International Characters Line Graphics Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDATA Busin...

Page 315: ...01 Types Letter Legal Labels Bottom feed only Continuous Forms C 3 02 Weight 12 24 lb 16 24 lbs Cut Sheet Feeders C 3 03 Number of Copies 1 4 Copyright 1997 Okidata Division of OKI America Inc All rig...

Page 316: ...PHYSICAL SPECIFICATIONS C 4 01 Printer Dimensions Width 16 42 Height 7 09 Depth 22 44 C 4 02 Printer Weight 37 lbs Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKIDA...

Page 317: ...TS C 5 01 Input Power Input Voltage 120 VAC 10 15 220 240 10 15 Frequency 50 60 hz 2 C 5 02 Power Consumption 180 VA during Self Test Copyright 1997 Okidata Division of OKI America Inc All rights rese...

Page 318: ...peration 41 F to 104 F 20 80 Relative Humidity While in storage 40 F to 158 F 5 95 Relative Humidity C 6 02 Printer Noise Level 10 cpi LQ Mode Standard noise level 58 dba Quite mode noise level 55 dba...

Page 319: ...AGENCY APPROVALS C 7 01 Listings North America FCC Class B UL 478 Office Machines and Business Equipment CSA 22 2 154 Copyright 1997 Okidata Division of OKI America Inc All rights reserved See the OKI...

Page 320: ...ders CSF 3001 Single bin Cut Sheet Feeder CSF 3002 Dual bin Cut Sheet Feeder C 8 04 Pull Tractor Assembly The Pull Tractor Assembly is required for bottom feeding A Pull Tractor Assembly must be used...

Page 321: ...or Cartridge Microline 393C Type Four band color ribbon Yellow Magenta Cyan Black Black 2 3 million characters Ribbon Life Cyan 1 8 million characters Ribbon Life Magenta 1 8 million characters Ribbon...

Page 322: ...ont Cartridges 64 Kbytes each C 10 02 RAM Total RAM 64 Kbytes Print Buffer 23 Kbytes IBM I F Buffer 0 Kbyte minimum Epson I F Buffer 8 Kbyte minimum DLL Buffer 0 to 32 Kbytes C 10 03 EEPROM Internal C...

Page 323: ...02 Mean Time To Repair MTTR 15 minutes major sub assembly level C 11 03 Printer Life 12 000 hours 25 Duty 35 Page Density C 11 04 Printhead Life 200 Million Characters average 10 cpi Draft Mode 25 Dut...

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