Samsung ML-7300N Spécifications

ML-7300 SeriesLASER PRINTER CONTENTSSERVICEManual1. Precautions2. Reference Information 3. Product Information 4. Disassembly5. Trouble Shooting6. Exp

2-2-2. List of code descriptionReferenceSamsung Electronics2-4Code Description1. DIAGNOSTIC CODE 2.STATUS CODE00 MAIN MOTOR OPERATING 78 SYSTEM ERROR0

Electrical Parts ListSEC CODE LOCATION NO. Q’ty DESCRIPTION Samsung Electronics7-8P

Electrical Parts ListSamsung Electronics7-9SEC CODE LOCATION NO. Q’ty DESCRIPTION P

Electrical Parts ListSamsung Electronics7-10JC92-01119A NETWORK CARD PBA(100BASE)0601-000105 LED2 1 “LED;CBI-ANGLE,GRN,5mm,560nm”0601-000105 LED1 1 “L

2007-002826 R112 1 “R-CHIP;110OHM,1%,1/10W,DA,TP,2”2011-001094 RA1 1 “R-NETWORK;39ohm,5%,1/16W,L,CHI”2011-001094 RA10 1 “R-NETWORK;39ohm,5%,1/16W,L,CH

SEC CODE LOCATION NO. Q’ty DESCRIPTION 3301-001312 R138 1 “CORE-FERRITE BEAD;AB,22

Samsung Electronics 8-108- Bloack Diagrams 8-1 WIRING DIAGRAM MPCLUTCHPTLMPSENSORTONERSENSOR121231231212123123OPTION SCFMOTORPICK-UPCLUTCHCASSET

Samsung Electronics8-28-2 Engine Controller Block DiagramML7300 ENGINE BLOCK DIAGRAMSENSOR- Cassette- Pempty- Exit- Feed- Toner- Cover- Duplex- Scf-st

Samsung Electronics 8-38-3 Video Controller Block DiagramVideo Controller Board Block DiagramROM72PIN SIMM 29F8008Mbit Flash Memory 29F800

Samsung Electronics8-4MEMO

Samsung Electronics 9-19-1. Engine Control & Joint Board

2-2-3. The Diagnostic Control Unit (DCU) Operating GuideThe DCU has functions as follows:1) Engine Status and Error Code Display modeDisplay the engin

Samsung Electronics9-29-2. Cassette Sensor Board7

Samsung Electronics 9-39-3. Video Controller BoardAM29F800B-70ECLF12C216C196C217R200C218C219C220C221C222C223C199C200C201C202R192R193R194R195LF9R133C11

Samsung Electronics9-49-4. Panel & LCD Board

Samsung Electronics 9-59-5. PTL (Pre Transfer Lamp) Board

Samsung Electronics9-69-6. SCF(Second Cassette Feeder) Board2.65

Samsung Electronics9-7. Infrared Adapor Board9-7

Samsung Electronics9-89-8. Flash SIMM Board9-9. Postscript Board

Samsung Electronics 9-99-10. Local Talk

Samsung Electronics9-109-11. Serial/IrDA Board

10. PortThru (Network Printer Card) Circuit Description10-1. IntroductionThe purpose of the Network Printer Card(PortThru) is to enable the Samsung Pr

Code Key Operation LED Display06 ENTER Pickup Clutch ON Lighten ON LEDSHIFT+STOP Pickup Clutch OFF Lighten OFF LEDUP Increment DCU Code No. (07, Senso

10-2. Board Description10-2-1 Configuration of Network BoardService Part : JC92-01119AProduct InformationSamsung Electronics10-2

10-2-2 Network Board Connector Pin AssignmentProduct InformationSamsung Electronics 10-3Connector Description Pin No. Idle Active In/Out21, 19, 18, 1

10-3 Troubleshooting of Network Card10-3-1 Troubleshooting Flow ChartProduct InformationSamsung Electronics10-4Status LED Blinking ?Does it light up

Product InformationSamsung Electronics 10-5Power ErrorNetwork board's inputvoltage = +5V ?Check the BD1 of the Network CardPower ErrorGo to Syst

Product InformationSamsung Electronics10-6System ErrorCPU's inputvoltage = +5V ?CPU's pin No. 82Reset input level = High ?Check the Network

Product InformationSamsung Electronics 10-7Network ErrorU165's inputvoltage = +5V ?U165(pin no 82)'s Reset input level = High ?U165(pin no

Product InformationSamsung Electronics10-8PHY Chip ErrorU165's inputvoltage = +5VU165(pin no. 82)'sReset input level = High ?U165(pin no. 5

Product InformationSamsung Electronics 10-9Shared Memory Interface ErrorU22's inputvoltage = +5V ?U22(pin no. 123)'sReset input level = Hig

Product InformationSamsung Electronics10-1010-3-2 Troubleshooting Table of Network CardNo. Error Type Check List RepairPower Connection Check the BD1

ML-7300NCORE-FERRITE 1UNIT-LSU 1MAN(CARD)- QRG CARD 1BOX-MAIN 1ELA HOU-FRE BASE OUT 1ELA HOU-CST SENSER 1SCREW-MACHINE 2IPR-BRKT PAPER SIZE 1IPR-PUSH

Samsung Electronics 3-13 Product InformationSpecifications are correct at the time of printing. Product specifications are subject tochange without n

SOLENOID-DUPLEX 1SPRING-SOLENOID DP 1SPRING-PLATE K/UP 1BELT-TIMMING 1“GEAR-EXIT/U,ID” 1“GEAR-DP,IDLE” 2GEAR-DUPLEX 2IPR-BRKT DUPLEX 1IPR-LINK DUPLEX

CBF HARNESS-MP GND 1CBF HARNESS-JOINT 1SPRING-G_FRONT 1FOOT-RUBBER 2BEARING-E/UP R 1GEAR-EXIT 1“GEAR-EXIT/U,ID” 4GEAR-P/UP DRIVE 2“GEAR-DP,IDLE” 1“GEA

PMO-COVER-LEFT 1PMO-AIRDUCT 1MEA UNIT-RACK COVER REAR 1SCREW-TAPTITE 3SPRING-FEED RLL 3SPRING-REAR 2GEAR-DUPLEX 1ICT-BRKT REAR COVER 1IPR-SPRING UPPER

Samsung ElectronicsVPMO-BRKT FUSER GEAR 1MEA RACK-GUIDE REAR 1SPRING-ACTUATOR 1LABEL(P)-FUSER JAM 1LABEL(P)-HIGH TEMPER 1PMO-REAR FUSER 1PMO-ACTUATOR

Product Information3-2 Samsung Electronics3-2 Controller SpecificationItem DescriptionProcessor(CPU) •Motorola Power PC 603e 100MhzMemory•ROM : 2MB fl

Product InformationSamsung Electronics 3-33-4 Environmental ConditionItem Operating StorageTemperature• 10~30℃(50-86℉) •0~40℃(32-104℉)Humidity • 20~8

Product Information3-4 Samsung Electronics3-6 Paper Handling Specifications •Input Paper Size Paper Type Size1st Cassette 2nd Cassette MP tray Duple

4. Disassembly4-1 Front View4-2 Rear ViewDisassemblySamsung Electronics 4-1Control PanelCover Open Cover FrontCover TrayPower SwitchPaper Level Indica

4-3 Cabinet Disassembly4-3-1. Cover RightDisassemblySamsung Electronics4-2Remove the screws and open theCover Rear.In order to remove the Cover Right.

DisassemblySamsung Electronics 4-3The left hand should slide theCover Right to the backward.

Samsung Electronics Co., Ltd. September. 2001Printed in KoreaVERSION NO. : 1.02 P/N. JC-0024AELECTRONICS

4-3-2. Cover LeftDisassemblySamsung Electronics4-4Remove screw and open the CoverRear.Please see the hook of the CoverLeft. Pull the Hook and release

4-3-3. Cover FrontPlease see the MP tray disassembly. (4-9)4-3-4. Cover MainDisassemblySamsung Electronics 4-5Open the Cover Open.Remove two screws.Se

4-3-5. Cover RearDisassemblySamsung Electronics4-6Open the Cover Rear.Detach the stripe by pushing thestripe.There is a hook holding the stripe.After

4-4 Video Controller board & Joint boardDisassemblySamsung Electronics 4-7After removing external cabinet,see the 5 screws and you shouldremove th

DisassemblySamsung Electronics4-8Remove the screws which hold theBracket ICU to the frame and detach controller from the frame.You can see the Frame I

4-5 Fuser Ass’yDisassemblySamsung Electronics 4-9Open the Cover Rear and see thescrews and unscrew and removethe Cover pcb.After removing the Cover pc

DisassemblySamsung Electronics4-10See the 4 screws which holdthe fuser ass'y to the frame.You should unscrew and pullthe fuser out and it will be

DisassemblySamsung Electronics 4-11When Jam happens, you can easilyremove it by pulling the Guide Rearout like figure. In order to removeGuide Rear, o

4-6 Bracket Motor Ass’y & Cover Open Switch UnitDisassemblySamsung Electronics4-12Bracket Motor ass’y is located inthe right-upper side. Remove 7b

DisassemblySamsung Electronics 4-13After removing the Bracket Motorass’y, you can see the Cover OpenSwitch Unit.Remove the SMPS.Refer to SMPS & Br

Contents1. Precautions2. Reference Information3.Product Information4. Disassembly1-1 Safety precautions ______________________________1-11-2 Laser Saf

4-7 Pickup Ass’yDisassemblySamsung Electronics4-14After running about more than100,000 pages, the pickup ass’ymay be needed to be replaceddepending on

4-8 Laser Scanner UnitDisassemblySamsung Electronics 4-15Laser Scanner Unit is located in the upper frame.In order for LSU disassembling, disassemble

DisassemblySamsung Electronics4-16There are two wires for LSU. One is LSU motor and the other is Laser beam control. The wiresare wire to wire types.

4-9 Multi Purpose TrayDisassemblySamsung Electronics 4-17Hold the MP tray and pull it to thearrow direction.See the Links which hold the MP trayin the

DisassemblySamsung Electronics4-18After detaching the Tray MP, see the screws and remove them. Remove the hook and release the Cover Front by releasin

DisassemblySamsung Electronics 4-19After removing Cover Front, detachthe MP ass’y by unscrewing 4screws.Before detaching MP Ass’y, unplugthe MP soleno

4-10 Control PanelDisassemblySamsung Electronics4-20First lift up Cover Main and see the panel wire and disconnect the wire from the panel board. Andn

DisassemblySamsung Electronics 4-21After removing Key&LED ass’y, release the hook of LCD ass'y from Cover Top and see the hingefor LCD ass’y

4-11 Engine Controller BoardDisassemblySamsung Electronics4-22After removing Cover Rear, disconnectall wires from the PCU. and thenremove the screw of

DisassemblySamsung Electronics 4-23After turning over, remove Bar cross Bottom by unscrewing them 8 screws.Next remove the CST Sensor and remove the s

ii Samsung Electronics5. Troubleshooting6. Exploded Views & Parts List 7. Electrical Parts Lists8- Bloack Diagrams5-1 Print Quality______________

After unscrewing, lift the PCU like above figure.And you can see the connector which are LSU’sand ‘Video I/F’s’. Unplug them with care. Becareful not

DisassemblySamsung Electronics 4-25Above is to show the disassembled PCU and Frame. PCU Ass'y has some sensor, someactuator, solenoid and Shield

In order to remove SMPS, first remove Cover Left. Use your left hand to release hook from the frame and slide the Cover Left to backward by use ofrigh

DisassemblySamsung Electronics 4-27There are 4 connectors to the SMPS. The power connector is +5V and +24V output from SMPS.AC for fuser is AC output

4-13 Transfer Roller Ass’yOpen the Cover Top, you can see colored levers at each side of Transfer Roller, push the leverswhich is attached in the Hold

5. Troubleshooting5-1 Print QualityError status Check Solution1. Check HVPS output voltage 1. Refer to HVPS output specDark Image2. Check terminal con

Error status Check Solution1. Check HVPS voltage 1. Refer to HVPS output spec.- Replace the engine board2. Check the GND OPC contact. 2. Fix contact p

5-2 HVPS Output SpecDCU CODE NO. HVPS OUTPUT REMARKCHARGER “01” - 1.55 KVTRANSFER “-” “02” -1KV~ -1.4KVTRANSFER “+” “03” +3.05 KVBIAS “04” - 475 VS

5-3 MalfunctionError status Check Solution1. Check FUSE 1. Replace SMPS.- F1(8A), F2(5A) OPEN. - Refer to “4-12”No Power2. Check FUSE. 2. Measure the

Error status Check Solution1. Check the exit sensor. 1. Replace Exit sensor.- Refer to DCU mode “08” - Refer to “4-11”2. Check the exit sensor actuato

iiiSamsung Electronics9. PCB Diagrams 10. PortThru (Network Printer Card)Circuit Description11. Schematic Diagrams9-1. Engine Control & Joint Boa

Error status Check Solution1. Check the DC supply for laser 1. If +5Vs for laser diode isn’t supplied.scanning unit check the cover switch assembl

Error status Check Solution- Refer to DCU mode “00”1. Check the supply voltage. (+24 1. Replace to cover open unit.Engine board CN1 -2,5 pin 2. Replac

5-4 .Connector Pin Assignment 5-4-1. Engine Board Connector Pin AssignmentCONNECTOR PIN-NO DESCRIPTION IDLE ACTIVE IN/OUT1 MOTOR_PB* +24V PULSE OCN12.

5-4-2. Joint Board Connector Pin AssignmentCONNECTOR PIN-NO DESCRIPTION IDLE ACTIVE IN/OUT1,2,4 +5V +5V +5V -3 MP_CLUTCH L 0.7V O5 Q_LAMP L 0.7V O6 +5

CONNECTOR PIN-NO DESCRIPTION IDLE ACTIVE IN/OUT1 DGND DGND DNGD -2 VDO H L O3 LDON H L O4 DPI_SEL H L OCN95 +5Vs +5V +5V -LSU6 HSYNC H L I7NC _ _ _8 L

5-4-3. S.C.F Board Connector Pin AssignmentCONNECTOR PIN-NO DESCRIPTION IDLE ACTIVE IN/OUT1 +5V +5V +5V -2 AGND AGND AGND -CN1 3 +24V +24V +24V -ENGIN

5-5 .Troubleshooting of Video ControllerMost electronic products are sensitive to connectors and assemblies that are not complete seated. Therefore, b

Power ErrorTroubleshootingSamsung Electronics 5-13Video board’sinput voltage=5V?Check the connection ofPower cord and CablesPower ErrorReplace the LCD

System ErrorSamsung Electronics5-14TroubleshootingCPU’s inputvoltage = 3.3V?Check Video Controller Board(1) Forign material? (2) ROM installing? (3) S

Engine ErrorSelf Test ErrorTroubleshootingSamsung Electronics 5-15Check the connected status ofInterface cable.Check the soldering status ofSPGP1’s pi

1. Precautions1-1 Safety precautionsRead each caution carefully1. Do not use the pinter near water or when exposed to inclement weather.2. Do not plac

Parallel Interface ErrorPrinting ErrorSamsung Electronics5-16TroubleshootingCheck the soldering status ofSPGP1(U27)’s pin No.65-85Parallel Interface E

5-5-2. Troubleshooting Table of Video Controller BoardNO. Error Type Ckeck List RepairPower cord connection Connect the power cordVcc voltage(nominal

MEMOSamsung Electronics5-18Troubleshooting

Samsung Electronics 6-16. Exploded Views & Parts List6-1. Main Ass’y6-2. Cover Ass’y6-3. Frame Ass’y6-4. Cassette Ass’y6-5. MP Tray Ass’y6-6. Pick

Samsung Electronics6-2Exploded Views & Parts List6-1 Main Ass’y0S1S3S21423S2134S4S257S2S2S2101198121615S1S11

Samsung Electronics 6-3Exploded Views & Parts List220V110VMain Ass’y Parts List0 MAIN SET1 ELA HOU-COVER HOUSING * 1 X2 UNIT-LSU JC59-00005A 1 O3

Samsung Electronics6-4Exploded Views & Parts List6-2 Cover Ass’y1-11-21-2-81-31-1-21-1-4S2S51-1-31-2-91-2-101-2-11S21-2-611-2-71-2-61-2-51-2-41-2-

Samsung Electronics 6-5Exploded Views & Parts ListCover Ass’y Parts List1 ELA HOU-COVER OUSING * 1 X1-1 ELA HOU-COVER TOP JC96-01335C 1 O 7300N/XE

Samsung Electronics6-6Exploded Views & Parts ListCover Ass’y0 1-21-1 2-1 3 2-3 42-2 1-312

Samsung Electronics 6-7Exploded Views & Parts ListCover Ass’y Parts List0*X1 MEA RACK-TRAY MP JC97-01038B 1 O1-1 PMO-TRAY-MP * 1 X1-2 PMO-SIDE GUI

2. Reference Information2-1 Abbreviations and AcronymsTables 2-1 and 2-2 List abbreviations and acronyms which may be found in this service manual.Tab

Samsung Electronics6-8Exploded Views & Parts List6-3. Frame Ass’yS31-11-51-61-4226252423S1S92-12-22-42-31-31-2134567S3S3S389108-18-28-31111-111-21

220V110V220V110V1 ELA HOU-SMPS 220V * 1 XELA HOU-SMPS 220V * 1 X1-1 IPR-SHIELD SMPS * 1 X1-2 SMPS-PHX V2 JC44-00013A 1 OSMPS-110V JC44-00009A 1 O1-3 P

Samsung Electronics6-10Exploded Views & Parts ListFrame Ass’y Parts List38 PMO-REAR CST ALIGN * 2 X39 IPR-TERMINAL T/R * 1 X40 PMO-CAP TERMINAL TR

Samsung Electronics 6-11Exploded Views & Parts ListFrame Ass’y Parts List66-2 PMO-COVER QUENCHING * 1 X67 PMO-LEVER STACKING1 JC72-41188D 1 O68 ME

Samsung Electronics6-12Exploded Views & Parts List6-4. Cassette Ass’y13118291419S1S1S11132301522628S3241232210262523S2941368202117S1S32772516

Samsung Electronics 6-13Exploded Views & Parts ListCassette Ass’y Parts List1 MEA-RACK FEEDER CST JC75-01023C 1 O2 PMO-BUSH K/UP * 2X3 PMO-CAP PL

Samsung Electronics6-14Exploded Views & Parts List6-5. MP Tray Ass’y81470131291012211228274S2256S1522321171618152624201S1S1

Samsung Electronics 6-15Exploded Views & Parts ListMP Tray Ass’y Parts List0 ELA HOU-MP TRAY JC96-01055A 1 O1 PMO-FRAME MP * 1X2 BEARING-PICK UP *

Samsung Electronics6-16Exploded Views & Parts List6-6. Pick Up Ass’y123218224712112241013171415234221842295617152019S1

Samsung Electronics 6-17Exploded Views & Parts ListPick Up Ass’y Parts List1 MEA RACK-PICK UP JC97-01039A 1 O2 PMO-FRAME FEED * 1X3 IPR-PAPER GUI

Table 2-2. AcronymsAcronym Definition Acronym DefinitionABL Automatic Blanking Limiter IDE Intelligent Drive electronics orImbedded Drive ElectronicsA

Samsung Electronics6-18Exploded Views & Parts List6-7 Fuser Ass’y0153S15S22356127S22930242731262891510132317S2201122192116141311S332S5S133S4184372

220V110V220V110VSamsung Electronics 6-19Exploded Views & Parts ListFuser Ass’y Parts List0 ELA HOU-FUSER 220V JC96-02033A 1 OELA HOU-FUSER 110V JC

Samsung Electronics6-20Exploded Views & Parts List6-8. Shield Ass’y2642524051023221516181917S1S1S21421S11210697812131120202732S1S1S3110S2S4

Samsung Electronics 6-21Exploded Views & Parts ListShield Ass’y Parts ListO ELA HOU-ENGINE_7300 * 1X1 IPR-SHIELD PCB * 1X2 IPR-SPRING UPPER DP * 2

Samsung Electronics6-22Exploded Views & Parts List6-9. Bracket Duplex Ass’y01238710179S21299161110171516S16413145717

Samsung Electronics 6-23Exploded Views & Parts ListBracket Duplex Ass’y Parts List0 ELA HOU-BRKT DUPLEX JC96-01056A 1 O1 PMO-PULLEY DUPLEX * 2X2 B

Samsung Electronics6-24Exploded Views & Parts List6-10. Bracket Motor Ass’y0419S1S2101211S2132514148736

Samsung Electronics 6-25Exploded Views & Parts ListBracket Motor Parts List0 ELA HOU-BRKT MOTOR JC96-01951A 1 O1 GEAR-IDLE 27 * 1X2 GEAR-FUSER DRI

Samsung Electronics6-26Exploded Views & Parts List6-11. Frame SCF Ass’y

Samsung Electronics 6-27Exploded Views & Parts ListFrame SCF Ass’y Parts List900 MEA RACK-SCF ASS’Y * 1X900-1 MEA RACK-FRAME SCF * 1X902 PMO-SENSO

2-2. Diagnostic Control Unit2-2-1. AbstractThe diagnostic Control Unit(DCU) is useful for troubleshooting the Laser beam printer ML Series engines, an

Samsung Electronics6-28Exploded Views & Parts List1007 SCREW-TAPTITE * 2X1007 SCREW-TAPTITE * 6X1007 SCREW-TAPTITE * 1X1007 SCREW-TAPTITE * 2X1007

Samsung Electronics 6-29Exploded Views & Parts ListExploded Views6-12. Cassette SCF Ass’y

Exploded Views & Parts ListSamsung Electronics6-30Exploded ViewsCassette SCF Ass’y Parts List950 MEA RACK-CAST SCF * 1X951 IPR-KNOCK UP(SCF) * 1X9

JC92-01211A PBA MAIN-ENGINE_73000401-000005 “D1,D2,D3,D4,D5” 5 DIODE-SWITCHING “1N4148,100V,200MA,DO-35,TP”0401-000005 “D18,D20,D24,D26,D27” 5 DIODE-S

Electrical Parts ListSEC CODE LOCATION NO. Q’ty DESCRIPTION 2001-000290 “R514,R30,

2201-000004 C70 1 “C-CERAMIC,DISC” “0.1nF,10%,2kV,SL,TP,8x5,5”2201-000017 “C105,C108” 2 “C-CERAMIC,DISC” “1nF,10%,50V,Y5P,TP,5x3.5,5”2201-000017 “C48,

Electrical Parts ListSEC CODE LOCATION NO. Q’ty DESCRIPTION JC39-40511A “J126,J127

SEC CODE LOCATION NO. Q’ty DESCRIPTION JC92-01282A PBA MAIN-CONTROLLER0801-0

2007-000781 “R146,R148,R171,R172,R177” 5 R-CHIP “33OHM,5%,1/10W,DA,TP,2012”2007-000781 “R192,R193,R194,R195” 4 R-CHIP “33OHM,5%,1/10W,DA,TP,2012”2007-

SEC CODE LOCATION NO. Q’ty DESCRIPTION 2901-001178 “LF12,LF13,LF14,LF15,LF16