Samsung ML-1650 Spécifications Page 1

SERVICELASER PRINTERML-1650SeriesML-1650 / ML-1651NManualLASER PRINTER CONTENTS1. Precautions2. Specifications3. Disassembly and Reassembly4. Trouble

1. Open the printer cover.2. Remove the cap.3. Hold the cap at the both end of the roller, thenremove the roller. Disassembly and Reassembly3-2Sams

Disassembly and Reassembly3-3Samsung Electronics1. Remove two screws and remove thecontroller cover.2. Remove five screws securing the board andunpl

1. Turn the printer upside down. Remove fourscrews, then remove the bar cross bottom.2. Remove three screws from the left basebracket, and take the

Disassembly and Reassembly3-5Samsung Electronics1. Remove two screws and remove the controllercover.2. Remove two screws at the back of the printer

1. Before you remove the exit assembly, youshould remove:-Main Cover (see page 3-5)2. Remove the exit tray in the direction of arrow.3. If you wa

Disassembly and Reassembly3-7Samsung Electronics1. Before you remove the LSU, you should remove:-Main Cover (see page 3-5)-Exit assembly (see page

Disassembly and Reassembly3-8Samsung Electronics1. Before you remove the fan, you should remove:-Main Cover (see page 3-5)2. Remove two screws secu

Disassembly and Reassembly3-9Samsung Electronics1. Before you remove the drive assembly, youshould remove:-Main Cover (see page 3-5)-Fan

Disassembly and Reassembly3-10Samsung Electronics1. Before you remove the fuser, you should remove:-Main Cover (see page 3-5)2. Remove four screws

Disassembly and Reassembly3-11Samsung Electronics1. Before you remove the guide feed & PTL, youshould remove:-Main Cover (see page 3-5)2. Relea

© Samsung Electronics Co.,Ltd. September 2001Printed in Korea.VERSION NO. : 2.00 CODE : JC-0055AThis service manual is also provided on t

Disassembly and Reassembly3-12Samsung Electronics1. Before you remove the MPF assembly, youshould remove:-Main Cover (see page 3-5)2. Unplug two co

Disassembly and Reassembly3-13Samsung Electronics♦ To replace the Paper Empty (PE) sensor :1. Release the wire from the two holders.2. Raise the pi

Disassembly and Reassembly3-14Samsung Electronics1. Before you remove the engine board, you shouldremove:-Main Cover (see page 3-5)2. Remove six sc

Disassembly and Reassembly3-15Samsung Electronics♦ To replace the exit board :Unplug one connector from the controller boardand remove one screw secu

Disassembly and Reassembly3-16Samsung Electronics♦ To replace the actuator feed1. Turn the mechanism back and push down thepoints as shown to unlatch

Troubleshooting4-1Samsung Electronics4. Troubleshooting4-1 How to use DCU 4-1-1 DCU Setup ...Page(4-2)4-1-2 Co

Troubleshooting4-2Samsung Electronics4-1 How to use DCU 4-1-1 DCU SetupYou can examine the malfunction of the printer. To perform DCU, open the fron

Troubleshooting4-3Samsung Electronics4-1-3 Self Diagnostic ModeIf Error code occurs due to malfunction of the printer, perform Self Diagnostic Mode

Troubleshooting4-4Samsung Electronics13 THV(+) TRIGGER. ALL HV :All high voltage output by each HV terminal and LSU and the fan is in operation. In th

Troubleshooting4-5Samsung Electronics4-1-6 DCU PanelML-1650 DIAGNOSTIC CONTROL UNITQUICK REFERANCE040507080910BIAS 3LSU READYPAPER EMPTYCRUCOVER OPEN

This manual is stated and provided for service description.All rights reserved. Any parts of the information in this manual are prohibited from free d

Troubleshooting4-6Samsung Electronics4-2 The cause and solution of Bad image 4-2-1 Vertical Black Line and Band • Description1. Straight thin black v

Troubleshooting4-7Samsung Electronics4-2-3 Horizontal Black Band• Description1. Dark or blurry horizontal stripes occur in the printing periodically.

Troubleshooting4-8Samsung Electronics4-2-5 Light Image• Description The printed image is light, with no ghost.Digital PrinterDigital PrinterDigital P

Troubleshooting4-9Samsung Electronics4-2-7 Uneven Density• Description Print density is uneven between left and right.Check and Cause Solution1. The

Troubleshooting4-10Samsung Electronics4-2-9 Ghost (1) • Description Ghost occurs at 96 mm intervals of the OPC drum in the whole printing.Digital Pri

Troubleshooting4-11Samsung Electronics4-2-11 Ghost (3) • Description White ghost occurs in the black image printing at 51mm intervals.Digital PrinterD

Troubleshooting4-12Samsung Electronics4-2-14 Satins on Back of Page • Description The back of the page is stained at 56.1 mm intervals.Digital Printer

Troubleshooting4-13Samsung Electronics4-3 The cause and solution of the bad discharge4-3-1 Wrong Print Position• Description Printing begins at wro

Troubleshooting4-14Samsung Electronics4-3-4 JAM 2 • Description1. Recording paper is jammed in front of or inside the fuser.2. Recording paper is st

Troubleshooting4-15Samsung Electronics4-3-5 Multi-Feeding • Description Multiple sheets of paper are fed at once.Check and Cause Solution1. Solenoid

Read each caution carefully:1. Do not use this printer near water or when exposed toinclement weather.2. Do not place this printer on an unstable ca

Troubleshooting4-16Samsung Electronics4-3-7 OPC• Description Paper is rolled up in the OPC.Check and Cause Solution1. Paper is too much thin. 2. Th

Troubleshooting4-17Samsung Electronics4-4 The cause and solution of the malfunction4-4-1 All LEDs blinking (Fuser Error)• Description1. All the lamps

Troubleshooting4-18Samsung Electronics4-4-3 Not function of the gear of the fuser due to melting away• DescriptionThe motor breaks away from its plac

Troubleshooting4-19Samsung Electronics4-4-6 Cover Open• DescriptionThe ERROR lamp is on even when the print cover is closed.Check and Cause Solution1

Troubleshooting4-20Samsung Electronics4-4-8 Defective motor operation• DescriptionMain motor is not driving when printing, and paper does not feed in

Troubleshooting4-21Samsung Electronics4-4-10 Vertical Line Getting Curved• DescriptionWhen printing, vertical line gets curved.Check and Cause Solutio

Troubleshooting4-22Samsung Electronics4-5 Toner Cartridge ServiceIt is not guaranteed for the default caused by using other toner cartridge other than

Troubleshooting4-23Samsung Electronics4-5-4 Signs and Measures at Poor toner cartridgeFault Signs Cause & Check SolutionLight image andpartially

Troubleshooting4-24Samsung ElectronicsFault Signs Cause & Check SolutionWhite Black spotRecycled product• Light or dark blackdots on the imageoc

Troubleshooting4-25Samsung ElectronicsFault Signs Cause & Check SolutionGhost & ImageContamination• The printed imageis too light or dark,or

Precautions1-2Samsung Electronics1-2 Precautions on Disassembly and Reassembly Very careful precautions should be taken when replacingparts. Before re

Troubleshooting4-26Samsung Electronics4-6 The cause and solutions of bad environment of the software4-6-1 The printer is not working (1) • Descriptio

Troubleshooting4-27Samsung Electronics4-6-2 The printer is not working (2) • DescriptionAfter receiving the printing order, no response at all or the

Troubleshooting4-28Samsung Electronics4-6-3 Abnormal Printing• DescriptionThe printing is not working properly even when the cable has no problem.(ev

Troubleshooting4-29Samsung Electronics4-6-4 SPOOL Error• DescriptionTo spool which stands for "simultaneous peripheral operations online" a

Exploded Views and Parts List5-1Samsung Electronics5. Exploded Views and Parts List• Deal drawings and service parts are declared for the items with

Exploded Views and Parts List5-2Samsung ElectronicsO : Service available X : Service not available5-1 Exploded Views and Parts ListNO. DESCRIPTION SE

Exploded Views and Parts List5-3Samsung Electronics13121722015112210-110-210-310-410185-35-15-25388-13-13-21919-219-319-119-1641419-317211616-116-216-

Exploded Views and Parts List5-4Samsung Electronics5-2 All Exploded Views and Parts List1-101-21-131-71-91-41-61-51-31-31-121-1111-11-83-43-63-73-53-

94342232222-422-322-222-13411819519-219-1474546484650511818-118-23836203710412724-224-1252425-225-12731-331-231-130-230-1355332-132-23228334931302929-

Exploded Views and Parts List5-6Samsung Electronics5-2-3 Exit Exploded View16191817161514139786512101142310NO. Description Q’ty0 MEA RACK-HOU EXIT 1

Precautions1-3Samsung Electronics1-3 Tools for TroubleshootingThe following tools are recommended for safe and smooth troubleshooting described in th

Exploded Views and Parts List5-7Samsung Electronics5-2-4 Rack-MPF Exploded View25318151718169192622137241614212041021211168025NO. Description Q’ty0

Exploded Views and Parts List5-8Samsung Electronics5-2-5 Fuser Exploded View382726242322212518201928353430293331321716151411391111210358167373642012

Exploded Views and Parts List5-9Samsung Electronics5-2-6 Drive Exploded View1234567891011130NO. Description Q’ty0 ELA UNIT-MOTOR 11 MOTOR-STEP 7.5_DE

Exploded Views and Parts List5-10Samsung Electronics5-2-7 Pick-Up Exploded View22420171610101511015319618215132142352262425527129115208NO. Descriptio

Exploded Views and Parts List5-11Samsung Electronics5-2-8 Cassette Exploded View0296824131420104181731612517191121152522NO. Description Q’ty0 MEA UNI

6. Block Diagram6-1 Video ControllerBlock Diagram6-122ADDR(0:31)29LV 16016Mbit Flash MemoryMask Font ROMK3P5V1000D-GC,HighROM29LV 16016Mbit Flash Me

6-2 Engine Block Diagram6-2Block DiagramCPU(KS88C4616)11.59158MHzPROGRAMMEMORY(27C512)74HC245VIDEOCONTROLLERInterfaceHVPS controlADCPWMSTEP MOTRDRIVE

7. Connection Diagram7-1in the CRU1-GND52-+ 5V3-GND54-+ 5V5-GND56-+ 3.3V7-GND248-+ 3.3V9-GND2410- 24V11- GND2412- 24V13- GND2414- 24V15- FUSER_ON16-

9. Schematic Diagrams9-1 Main Circuit Diagram(1/10)9-1KEPCHDWGREF NO SEC12ED 3SIGNAENGCEDITR

Main Circuit Diagram(2/10)9-2Schematic DiagramsGREF NOKED 23WEDITARPGDECSIGNCH1ENSEC

17 PPM(Letter) , 16PPM(A4)1200 * 1200Tray 1 : Less than 14 seconds Tray 2 : Less than 17 secondsLess than 40 secondsPrint : 300 W, Sleep mode : Less

Main Circuit Diagram(3/10) 9-3Schematic DiagramsHERPCCKEDSIGNAEDITENGDWG23REF NO SEC1

Main Circuit Diagram(4/10) 9-4Schematic DiagramsC1REF NOED EDITSIGNHCNGDGARWKE2PSEC3E

Main Circuit Diagram(5/10) 9-5Schematic DiagramsPGG321SECDREF NOASIGNRCED EDITWHECKEN

Main Circuit Diagram(6/10) 9-6Schematic DiagramsARDWCGREF NOCKE1SECEDPHENG23EDITSIGN

Main Circuit Diagram(7/10) 9-7Schematic DiagramsED EDITSIGNARPCKENGDWGREF NO SEC12 3HEC

Main Circuit Diagram(8/10) 9-8Schematic DiagramsDKWREF NO SEC1ED EDITSIGNPCHECGARN2G3E

Main Circuit Diagram(9/10) 9-9Schematic DiagramsNGE DWGREF NOSEC1ED EDITSIGNARPC23CKHERB420D T147D6D5RB420D T147RB420D T147D7

Main Circuit Diagram(10/10) 9-10Schematic DiagramsPCREF NO SEC3EDIT 2G1ENGEDHECKWSIGNARD

9-2 Engine Circuit Diagram(1/5)9-11Schematic Diagrams

Engine Circuit Diagram(2/5)9-12Schematic DiagramsAGNDAGNDAGNDDGND+5VDGNDDGNDDGNDDGND11LOGICSPLY1OUT1A17OUT1BOUT2A24OUT2BPHASE113 8PHASE212RC1RC2915REF

Specifications2-2Samsung Electronics10 ~32˚c (50˚F ~ 90˚F)20 ~ 80 % RH-200 ~40˚c (4˚F ~ 104˚F)10 ~90 % RHWindows 95/98 and Windows NT (3.51, 4.x )Netw

Engine Circuit Diagram(3/5)9-13Schematic Diagrams48+5V56+5VDGND+5VR48R425.6K5.6KR75R475.6K100R433R4412CN7-17R46100DGNDSCF_STS+24VSSCF_CLKSCF_CMDSCF_RD

Engine Circuit Diagram(4/5)9-14Schematic DiagramsR2931.8KDGNDAGNDQ623150V47uFC21C47KSC1008-Y100nF4.7KR317CLUCHL3CN1-1141M4D1LM393D328MMBT2222ALT1Q2132

Engine Circuit Diagram(5/5)9-15Schematic Diagrams

9-3 HVPS Circuit Diagram(1/3)9-16Schematic Diagrams24VS24VS24V24VTHV-EATHV-PWMMHV-PWMBIAS-PWMPTLD-GNDD-GNDD-GND5V5VA-GNDA-GNDA-GNDTHV-READ5V24VSHAWK-H

HVPS Circuit Diagram(2/3)9-17Schematic Diagrams5V18V24VS18V18V18V24VS24VSD-GNDCN2-#6CN2-#7CN1-#3,4TITLEDRW. NOREF. NOSIZE A4DATE 00/09/09HAWK-HVPSREV

HVPS Circuit Diagram(3/3)9-18Schematic Diagrams5V 18V24VS24VS18V24VS5VDONGYANG INSTRUMENTSTITLEREF. NODATE 00/12/111.533 OF 3DESIGNED CHECKEDREV.APPRO

9-4 Motor Circuit Diagram9-19Schematic Diagrams

9-5 Jointr Circuit Diagram9-20Schematic Diagrams

9-6 SMPS Circuit Diagram(110V)9-21Schematic DiagramsIGOIGO71 23458IC1(KA7552)CN324V 3ACN3 9,10,115VGNDU1IRF840PC1PC123C22104KNO MARKING RESISTOR 1/8W-

SMPS Circuit Diagram(220V)9-22Schematic DiagramsIGOIGO71 23458IC1(KA7552)CN324V 3ACN3 24VGNDU1SSP5N80PC1PC123C22104KNO MARKING RESISTOR 1/8W-J (5%)222

Disassembly and Reassembly3-1Samsung ElectronicsWhen you disassemble and reassemble components, you must use extreme caution. The close proximity ofca