Oki B 2400 User Manual

24XX-100Lexmark Forms Printer 2400 SeriesLexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the Unit

x Service Manual24xxInformació de Seguretat • Aquest producte està dissenyat, comprovat i aprovat per tal d'acomplir les estrictes normes de segu

4-40 Service Manual24xx9. Unhook the spring clip [A] from the left end of the lower pinch roller shaft and push it off the gray slotted spring block [

Repair Information 4-4124xxRoller, Lower Feed Removal 1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Remove the print unit. Go to

4-42 Service Manual24xx9. Remove the two screws [A] securing the platen to the side frames.10. Remove the carrier motor bracket. Go to “Carrier, Motor

Repair Information 4-4324xxSensors Removals

4-44 Service Manual24xxSensor, Pull Tractor Removal 1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Remove the small screw securin

Repair Information 4-4524xxSensor, Paper Select Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Remove the print unit. Go t

4-46 Service Manual24xxSensor, Home Position Sensor Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Disconnect the home pos

Repair Information 4-4724xxOptions RemovalsAuto Sheet Feeder Gears Removal 1. Remove the right cover.2. Release the joint gear latch [A] and remove th

4-48 Service Manual24xxAuto Sheet Feeder Pick-up Roller Removal 1. Remove the covers and the cut sheet support.2. Release the joint gear latch [A] and

Connector Locations 5-124xx5. Connector LocationsThis chapter identifies the locations of specific parts of the printer.

xi24xx

5-2 Service Manual24xxSignal ConnectionsPower Supply (9w & 24w)Connector Pin # SignalCN11 +40 V dc2 +40 V dc3Power Gnd4Power Gnd5 Signal Gnd6+5 V

Connector Locations 5-324xxLogic Board (9w & 24w)

5-4 Service Manual24xxLogic Board - Parallel Interface Cable (9w & 24w) Connector Pin # Signal Pin # SignalCN111 -Strobe 19 Signal Gnd2 Data 0 20

Connector Locations 5-524xxLogic Board (9w & 24w)

5-6 Service Manual24xxLogic Board - Serial Board (9w & 24w) Connector Pin # SignalCN2001+5 V dc2+5 V dc3-CTS4DTS5RXD6RTS7DSR8TXD9 Signal Gnd10 SBS

Connector Locations 5-724xxLogic Board (9w & 24w)

5-8 Service Manual24xxLogic Board - USB Cable (9w & 24w)Logic Board - DC Power (9w & 24w) Connector Pin # SignalCN2011+5 V dc2DMNS3DPLS4 Signa

Connector Locations 5-924xxLogic Board (9w & 24w)

5-10 Service Manual24xxLogic Board - Printhead (9w) Connector Pin # SignalCN4001H42H6C3H8C4H1C5H66H2C7H4C8H89H210 H911 HDTHERMO12 +5 V dc13 H114 H9C15

Connector Locations 5-1124xxLogic Board (9w & 24w)

xii Service Manual24xxPrefaceThis manual is divided into the following chapters:• “General Information” contains a general description of the printer

5-12 Service Manual24xxLogic Board - Printhead (24w) Connector Pin # SignalCN3001 +40 V dc2R153 +40 V dc4R215 +40 V dc6R237 +40 V dc8L249R1310 L2211 L

Connector Locations 5-1324xxLogic Board (9w & 24w)

5-14 Service Manual24xxLogic Board - Printhead (24w) Connector Pin # SignalCN3011R92R113R74R175R56R197R38 HDTHERMO9R110 +5 V dc11 L212 +40 V dc13 L414

Connector Locations 5-1524xxLogic Board (9w & 24w)

5-16 Service Manual24xxLogic Board - Gap Set Sensor (9w & 24w)Logic Board - Home Position Sensor (9w & 24w) Logic Board - Paper Present Sensor

Connector Locations 5-1724xxLogic Board (9w & 24w)

5-18 Service Manual24xxLogic Board - Paper Select Sensor (9w & 24w)Logic Board - Pull Tractor Sensor (9w & 24w)Logic Board - Top Of Form Senso

Connector Locations 5-1924xxLogic Board (9w & 24w)

5-20 Service Manual24xxLogic Board - Carrier Motor (9w & 24w)Logic Board - Paper Feed Motor (9w & 24w)Connector Pin # SignalCN21CAD2CAC3CAB4CA

Connector Locations 5-2124xxLogic Board (9w & 24w)

General Information 1-124xx1. General InformationPrinter DescriptionThe Lexmark TM Forms Printer 248X-100 and 249X-100 are small versatile tabletop p

5-22 Service Manual24xxLogic Board - Operator Panel (9w & 24w) Connector Pin # SignalCN13Logic Board1 +5 V dc2SLATCH3 +5 V dc4TXD5Signal Gnd6RXD7S

Connector Locations 5-2324xxLogic Board (9w & 24w)

5-24 Service Manual24xxLogic Board - Dual Tractor Cable (9w & 24w) Connector Pin # SignalCN101 +40 V dc2 +40 V dc3Power Gnd4Power Gnd5+5 V dc6COCO

Connector Locations 5-2524xxSerial Board - Serial Cable (9w & 24w)Connector Pin # Signal Pin # SignalCN21 Chassis Gnd 13 NC2TXD 14 NC3RXD 15 NC4RT

5-26 Service Manual24xxTractor 2 Cable ConnectorsThe Tractor 2 cable is soldered to the Tractor 2 board at CN1; there is no connector.Connector ModeCN

Preventive Maintenance 6-124xx6. Preventive MaintenanceThis chapter describes procedures for printer preventive maintenance. Following these recommen

6-2 Service Manual24xxLubrication PointsOil • Oil Felt (carrier block)• Tractor ShaftGrease • Side Frame (Left) and Gears • Side Frame (Right) and ASF

Preventive Maintenance 6-324xxLubrication Points (Oil)The oil felt [1] in the carrier block.The tractor shaft [1].

6-4 Service Manual24xxLubrication Points (Grease)Gear mounting studs on the right side frame [2].The lower pinch roller [2].

Preventive Maintenance 6-524xxLubrication Points (Grease) ContinuedGear mounting studs on the left side frame [2].

1-2 Service Manual24xxSetup ModeEntering Setup Mode1. Open the operator panel cover to access layer two.2. Press Setup to put the printer in setup mod

6-6 Service Manual24xxLubrication Points (Grease) ContinuedGear mounting studs on the left ASF side frame [2].Gear mounting studs on the right ASF sid

Parts Catalog 7-124xx7. Parts CatalogHow To Use This Parts CatalogSIMILAR ASSEMBLIES: If two assemblies contain a majority of identical parts, they a

7-2 Service Manual24xxAssembly 1: Covers

Parts Catalog 7-324xxAsm-Index Part Number Description1 - 1 12G3877 Guide, Left Paper 2 12G3873 Cover, Front Unit (2480, 2490)2 12G3874 Cover, Front U

7-4 Service Manual24xxAssembly 1: Covers

Parts Catalog 7-524xxAsm-Index Part Number Description1 - 8 12G3856 Cover, Bottom (2480, 2490)8 12G3857 Cover, Bottom (2481, 2491)9 12G3854 Tractor Un

7-6 Service Manual24xxAssembly 2: Carrier / Paper Feed Right Side

Parts Catalog 7-724xxAsm-Index Part Number Description2 - 1 12G3841 Carrier Roller Set2 12G3894 Printhead Assembly (2480, 2481)2 12G3895 Printhead Ass

7-8 Service Manual24xxAssembly 2: Carrier / Paper Feed Right Side

Parts Catalog 7-924xxAsm-Index Part Number Description2 - 22 12G3832 Roller, Upper Feed (2480, 2490)22 12G3833 Roller, Upper Feed (2481, 2491)

General Information 1-324xxSetup Menu OptionsInterface Menu OptionsMenus FunctionForms Macro options Customize macros to print a variety of forms.Data

7-10 Service Manual24xxAssembly 3: Carrier / Paper Feed Left Side

Parts Catalog 7-1124xxAsm-IndexPart Number Description3 - 1 12G3905 Gears and Bushings, Parts Packet (248X)1 12G3906 Gears and Bushings, Parts Packet

7-12 Service Manual24xxAssembly 3: Carrier / Paper Feed Left Side

Parts Catalog 7-1324xxAsm-IndexPart Number Description3 - 25 12G3931 Kit, Head Gap Adjustment26 12G3947 Lever, Form Thickness27 12G3842 Motor, Paper F

7-14 Service Manual24xxAssembly 4: Electronics

Parts Catalog 7-1524xxAsm-Index Part Number Description4 - 1 12G3907 Screws, Washers and Clips, Parts Packet 2 12G3836 Kit, ESD Ground (2490, 2491)2 1

7-16 Service Manual24xxAssembly 5: ASF - Roller / Support

Parts Catalog 7-1724xxAsm-Index Part Number Description5 - 1 12G3814 Support, ASF Cut Sheet W/ Guides (2480, 2490)1 12G3908 Support, ASF Cut Sheet W/

7-18 Service Manual24xxAssembly 6: ASF - Side Frame / Covers

Parts Catalog 7-1924xxAsm-Index Part Number Description6 -1 95F6893 ASF Springs, Parts Packet 2 95F6892 ASF Gears and Bushings, Parts Packet3 12G3920

1-4 Service Manual24xxPrinter SettingsSetting The Tear Off PositionWhen Auto Tear Off is on, or set to One Second, it moves the top perforation of a c

7-20 Service Manual24xxAssembly 7: Tractor 2 Option

Parts Catalog 7-2124xxAsm-Index Part Number Description7 - 1 12G3923 Table, Tractor 2 Paper W/ Guides (2480, 2490)1 12G3924 Table, Tractor 2 Paper W/

7-22 Service Manual24xxCoax / Twinax Adapter Asm-Index Part Number DescriptionNS 12G3704 Adapter, Coax (Power Cable and Adapter)NS 12G3705 Adapter, Tw

Index I-124xxIndexAAbbreviations 1-6Adjustments 4-2Bidirectional Print 4-4Printhead-to-Platen Gap 4-2ASFPrinciples of Operation 2-14CConnect

I-2 Service Manual24xxPPaper JamsClearing Continuous Forms 3-6Clearing Cut Sheet 3-6PartsASFRoller/Support 7-16Side Frame/Covers 7-18Carrier/P

Index I-324xxSSafety Information viiService Checks 2-13Abnormal Noise 2-13Abnormal Print 2-21Auto Sheet Feeder 2-14Carrier 2-16Intermitten

I-4 Service Manual24xxPart Numbers11A3274 7-7, 7-1311A3275 7-7, 7-1311A3283 7-2111A3284 7-2111A3335 7-2111A3336 7-2111A3337 7-2111A3338

Index I-524xx12G3892 7-1112G3893 7-1712G3894 7-712G3895 7-712G3896 7-7, 7-1112G3897 7-712G3898 7-712G3900 7-712G3901 7-712G3902 7-

I-6 Service Manual24xx

General Information 1-524xxSetting Top-Of-Form (Continuous - Pull Mode)1. Turn the printer on. The Paper Out light blinks if no paper is loaded.2. Mov

1-6 Service Manual24xxOptionsThe 24xx printers support the following options:• Auto Sheet Feeder (ASF)• Internal serial interface (RS232) • OKI emulat

Diagnostic Information 2-124xx2. Diagnostic InformationStartMake a quick visual check for defects (loose or broken parts, unplugged connectors, paper

Edition: November 2000The following paragraph does not apply to any country where such provisions are inconsistent with local law: LEXMARK INTERNATION

2-2 Service Manual24xxError Indication TableThe following table describes the service check entries for the printer error indication codes.When an err

Diagnostic Information 2-324xxPowerReadyPaper OutPanel LockFont LockONBlinkingBlinkingBlinkingBlinkingBeeps 10 timesHome Position ErrorGo to “Carrier

2-4 Service Manual24xxAll LEDs OFF None Power FailureCheck the continuity of the power cord and the voltage of the user’s outlet. If they are correct,

Diagnostic Information 2-524xxSymptom Check Table1. Select the symptom that best describes the problem.2. Perform the appropriate action before you go

2-6 Service Manual24xxAbnormal Print Operation ProblemsAuto Sheet Feeder ProblemsSymptom ActionPrinter will not print, or become ready.Abnormal operat

Diagnostic Information 2-724xxError IndicationsOperator Panel ProblemsPaper Feed Problems Symptom ActionReady and Paper Out lights blink.Turn the pri

2-8 Service Manual24xxLoad/Unloaddoes not function when the push tractor is installed. Form feed length is not correct.Load/Unload functions with cut

Diagnostic Information 2-924xxPower ProblemsLower feed roll shaft rotates, but paper does not feed.Pressing FormFeed does not feed paper.Abnormal nois

2-10 Service Manual24xxPrint Quality ProblemsSymptom ActionNo print, but carrier moves as if printing.Adjust the form thickness lever to a lower numbe

Diagnostic Information 2-1124xxRibbon Feed ProblemsSymptom ActionRibbon comes off, becomes loose or folded, or jams.Ribbon feeds correctly but is noi

iii24xxTable of ContentsSafety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiPreface . . . . . . . .

2-12 Service Manual24xxIrrecoverable Operator ErrorsPaper Out and Font lights blink. If this indication occurs, the problem may be with the paper pres

Diagnostic Information 2-1324xxService ChecksAbnormal Noise Service CheckCheck the entire printer for loose parts.FRU Action1 Ribbon Cartridge Remove

2-14 Service Manual24xxAuto Sheet Feeder (ASF) Service CheckNote: Be sure the sheet feeder is enabled in the Setup Mode. Go to “Setup Mode” on page 1

Diagnostic Information 2-1524xxFRU Action1 Paper Select SensorWith the paper select lever in the cut sheet position, do the following:• Try to load a

2-16 Service Manual24xxCarrier Service CheckNote: The Carrier Service Check includes the carrier drive, home position sensor and ribbon feed. FRU Act

Diagnostic Information 2-1724xx3 Carrier Motor If the home position sensor is okay, verify the the resistance of the carrier motor windings are approx

2-18 Service Manual24xxIntermittent Problem Service Check FRU/Symptom Action1 The printer sometimes fails before POST is complete.Check for the follow

Diagnostic Information 2-1924xx2 Printer power sometimes turns off.The cause of this problem may be that the power circuit is failing, or the wiring i

2-20 Service Manual24xx4If the prior suggestions have not corrected the problem.The following may cause undefined or intermittent failures:1.Loose con

Diagnostic Information 2-2124xxNo Print or Abnormal Print Service CheckOperator Panel Service CheckIf the operator panel is locked, only the Start/Sto

iv Service Manual24xxDiagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1Power-On Self Test (POST) . .

2-22 Service Manual24xxPaper Present Sensor Service CheckFRU Action1 Paper Present SensorWith no paper in the printer, the tractor in the push positio

Diagnostic Information 2-2324xxPaper Feed Service CheckNote: If paper creases or jams frequently, verify the paper is neither too thick nor thin. If

2-24 Service Manual24xx4 Operator Panel If paper does not move at all, verify the Load/Unload button is working as follows: With the tractor in the pu

Diagnostic Information 2-2524xxPaper Select Sensor Service CheckIf form feed length is off by about 1 inch (25 mm), enter Setup Mode and verify that t

2-26 Service Manual24xxPOST Service Check2 Pull Tractor SensorA failed pull tractor sensor can cause Load/Unload to malfunction. With the tractor in t

Diagnostic Information 2-2724xxPower Service CheckFRU Action1 Power Supply If the carrier does not move to the left after turning the printer off and

2-28 Service Manual24xxPrint Speed Service CheckThe speed of the 24xx printers varies with the font, forms thickness setting and printhead temperature

Diagnostic Information 2-2924xxPrinthead Service CheckFRU Action1 Printhead CablesPrinthead If the printout contains missing or extra dots or lines, d

2-30 Service Manual24xxPrinthead Impedance Tables2480, 2490 - Approximately 5 ohms2481, 2491 - Approximately 8 to 16 ohms Dot Connector1 CN400-13 &

Diagnostic Information 2-3124xxPull Tractor Sensor Service CheckThe pull tractor sensor detects the tractor in the pull position and disables load/unl

v24xxRight Side Gears, Sub Frame Removal. . . . . . . . . . . . . . . . . . . 4-34Rollers Removals . . . . . . . . . . . . . . . . . . . . . . . . .

2-32 Service Manual24xxTop-Of-Forms Service CheckFRU Action1 Top-Of-Form SensorCheck that the top-of-form sensor and its flag are properly installed a

Diagnostic Information 2-3324xxTractor 2 Service CheckThe Tractor 2 in-place sensor opens during installation, when its actuator touches the printer c

2-34 Service Manual24xx2 Logic Board Remove Tractor 2 from the printer but leave the cable connected. Be sure the slider (the black plastic piece just

Diagnostic Information 2-3524xx3 Beeps and Tractor 2 LED blinks 3 timesTractor 2 selected from operator panel but printer does not detect Tractor 2 or

2-36 Service Manual24xxTractor 2 Paper Feed Problems FRU Action1 Tractor 2 Be sure the gear on the printer that drives Tractor 2 turns freely when the

Diagnostic Aids 3-124xx3. Diagnostic AidsThe printer contains self tests to help find and solve problems. You do not need to connect the printer to a

3-2 Service Manual24xxPower-On Self Test (POST)The following tests are automatically performed when the printer is turned on. • LEDs Test - Checks ope

Diagnostic Aids 3-324xxPrint TestThe print test helps you test and troubleshoot the printer. To start the print test:1. Paper must be at the print pos

3-4 Service Manual24xxHex Trace ModeThe hex trace mode helps the user test and troubleshoot programs. Use the hex trace procedure to get a hexadecimal

Diagnostic Aids 3-524xxPrinter Default SettingsU.S. DefaultsTo initialize or reset the printer to the U.S. factory defaults: (Code page 437 Character

vi Service Manual24xxPreventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1Lubrication . . . . . . . . . . . . .

3-6 Service Manual24xxClearing Paper JamsCut Sheet JamsTo clear cut form paper jams:1. Turn the printer off.2. Set the forms thickness lever to positi

Repair Information 4-124xx4. Repair InformationThis chapter contains adjustments and removal procedures. Whenever parts are replaced, make sure that

4-2 Service Manual24xxAdjustmentsCAUTION: Be sure to unplug the power cord whenever you are working on the printer with one of the covers removed.Prin

Repair Information 4-324xx8. Using a feeler gauge [1], slowly adjust the left gap adjust bushing [2] counterclockwise, until a gap of (within 0.33 and

4-4 Service Manual24xxNote: For maximum print quality, adjust the head gap on both the left and right sides of the printer to within +/- 0.01mm. If t

Repair Information 4-524xxRemoval ProceduresCAUTION: Be sure to unplug the power cord whenever you are working on the printer with one of the covers r

4-6 Service Manual24xxCovers, Front Removal1. Rotate the front cover out and up about three inches from the bottom of the printer.2. Push the front co

Repair Information 4-724xxCovers, Option Removal1. From the bottom, pull the option cover [A] outward and up, removing it from the printer.

4-8 Service Manual24xxCovers, Top Removal1. Turn the printer off and disconnect the power cord at the printer.2. Remove the tractor assembly, if it is

Repair Information 4-924xx8. Turn the printer upside down. 9. Insert a flat blade screwdriver into each of the four holes [A] in the bottom cover, rel

vii24xxSafety Information• This product is designed, tested and approved to meet strict global safety standards with the use of specific Lexmark compo

4-10 Service Manual24xx10. Turn the printer right side up and insert a flat blade screwdriver into each of the two holes [A] in the back of the top co

Repair Information 4-1124xxCovers, Operator Panel Assembly Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Disconnect the o

4-12 Service Manual24xxCovers, Bottom Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Remove the logic board. Go to “Logic

Repair Information 4-1324xxElectronics RemovalsEPROM Removal1. Remove the options cover [A], by pulling it outward, up and out of the printer.2. Remov

4-14 Service Manual24xxLogic Board Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Disconnect all cables connected to the l

Repair Information 4-1524xxPower Supply RemovalCAUTION: The power supply may be hot.1. Turn off the printer and disconnect the power cord at both ends

4-16 Service Manual24xxCarrier RemovalsCarrier Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Remove the printhead from th

Repair Information 4-1724xx4. Remove the retaining wire [A] from the left side of the carrier shaft.

4-18 Service Manual24xx5. Remove the screw [A] from the forms thickness lever and remove the lever.

Repair Information 4-1924xx6. Remove the lower carrier motor mount screw [A].7. Remove the two screws [B] from the carrier shaft bushing bracket on th

viii Service Manual24xxNorme di sicurezza • Il prodotto è stato progettato, testato e approvato in conformità a severi standard di sicurezza e per l’u

4-20 Service Manual24xx9. Push the carrier shaft [A] from the right side and out the left side of the printer.10. Remove the carrier from the printer.

Repair Information 4-2124xxCarrier, Motor Assembly Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Loosen the carrier belta

4-22 Service Manual24xx4. Remove the screw [A] from the forms thickness lever and remove the lever.

Repair Information 4-2324xx5. Remove the screw [A] securing the carrier motor bracket to the bottom cover.6. Disconnect the printhead cable from the l

4-24 Service Manual24xxPaper Handling RemovalsPaper Select Lever Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Release th

Repair Information 4-2524xxForm Thickness Lever Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Remove the screw [A] from t

4-26 Service Manual24xxPrint Handling RemovalsPlaten Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Remove the two platen

Repair Information 4-2724xxPrinthead Removal1. Turn the printer off.2. Disconnect the power cord at the printer and allow the printhead to cool for 15

4-28 Service Manual24xxPrint Unit Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Disconnect all cables from the logic boar

Repair Information 4-2924xx5. Remove the two grommet anchored screws [A] from the right side of the print unit.6. Remove the print unit from the botto

ix24xxPautas de Seguridad • Este producto se ha diseñado, verificado y aprobado para cumplir los más estrictos estándares de seguridad global usando l

4-30 Service Manual24xxRibbon Drive Rack Gear Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Remove the carrier. Go to “Ca

Repair Information 4-3124xxGears RemovalsLeft Side Gears Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Remove the three s

4-32 Service Manual24xx3. Remove the four screws [A] from the paper feed motor bracket assembly.

Repair Information 4-3324xx4. Remove the paper feed motor bracket assembly, exposing the gears, as shown.

4-34 Service Manual24xxRight Side Gears, Sub Frame Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Unhook the wire retainer

Repair Information 4-3524xx5. Remove the sub frame exposing the right side gears [A], as shown.

4-36 Service Manual24xxRollers RemovalsRoller, Upper Feed Removal 1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Remove the screw

Repair Information 4-3724xx4. Remove the two screws [A] from the right upper feed roller bracket. One screw also retains the upper feed roller ground

4-38 Service Manual24xxRoller, Lower Pinch Removal1. Remove the top cover. Go to “Covers, Top Removal” on page 4-8.2. Slide the carrier to the far lef

Repair Information 4-3924xx7. Unhook the spring clip [A] from the right end of the lower pinch roller shaft and push it off the gray slotted spring bl