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Samsung ML-4550 manual

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Table of contents for the manual

  • Page 1

    DIGIT AL LASER PRINT CONTENTS [The keynote of Product] - Series Model: ML-4550 / 4551N / 4551ND - High speed Laser Printer: Up to 43 ppm in A4 (45 ppm in Letter), Duplex: 29 ipm (A4); 30 ipm (Letter) - Resolution: Up to 1200 x 1200 dpi - Marvell 500Mhz - Memory: 128 MB (Max. 512 MB) 128, or 256 MB optional memory available. Use only the Samsung-app[...]

  • Page 2

    ELECTRONICS Samsung Electronics Co.,Ltd. Mar . 2006 Printed in Korea. VERSION N O . : 1.00 CODE : JC-0168 F * This service manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use of Manual can be punished under applicable international and/or domestic law .[...]

  • Page 3

    Contents 1. Precautions 1.1 Safety Warning 1-1 1.2 Caution for safety 1-2 1.3 ESD Precautions 1-5 2. Product Specifications 2.1 Product Overview 2-1 2.2 Specifications 2-1 2.3 Model Comparison T able 2-6 3. Summary of Product 3.1 Printer Components 3-1 3.2 System Layout 3-7 3.3 Engine H/W Specifications 3-1 1 4. Alignment and Adjustments 4.1 How to[...]

  • Page 4

    Continue... 5. Disassembly and Reassembly 5.1 General Precautions on Disassembly 5-1 5.2 T ransfer Roller 5-2 5.3 MPF Ass’y 5-3 5.4 Holder Pad Ass'y 5-4 5.5 Retard Ass'y 5-5 5.6 Feed2 Idle Unit 5-6 5.7 Cover Right 5-7 5.8 Main PBA 5-8 5.9 Main Drive Ass'y 5-9 5.10 DEVE Drive Ass'y 5-10 5.1 1 Connector PBA 5-1 1 5.12 Solenoid 5[...]

  • Page 5

    Continue... 6. T roubleshooting 6.1 The cause and solution of Bad image 6-1 6.2 The cause and solution of the bad discharge 6-8 6.3 The cause and solution of the malfunction 6-13 6.4 Maintaining the toner cartridge 6-17 6.5 The cause and solutions of bad environment of the software 6-22 7. Exploded Views & Parts List 7.1 Main Assembly 7-2 7.2 C[...]

  • Page 6

    Continue... 10. Schematic Diagram 10.1 Main Board 10-1 10.2 DIMM board 10-17 10.3 CRUM board 10-19 10.4 EMPTY board 10-20 10.5 HVPS 10-21 10.6 Panel 10-25 10.7 SCF 10-26 10.8 T oner sensor 10-29 10.9 HDD.eps 10-30 1 1. Reference Information 1 1.1 Troubleshooting T ools 1 1-1 1 1.2 Acronyms and Abbreviations 1 1-2 1 1.3 Select a location for the pri[...]

  • Page 7

    Exploded Views & Parts List Service Manual 7-1 Samsung Electronics 7.1 Main Assembly p.7 - 2 7.2 Cover Assembly p.7- 3 7.3 Frame Assembly p.7- 4 7.4 Fuser Unit p.7- 6 7.5 REGI Assembly p.7- 7 7.6 Main Motor Assembly p.7-8 7.7 Deve Motor Assembly p.7- 9 7.8 Exit Sorenoid Assembly p.7- 10 7.9 Cassette Assembly p.7 -11 7.10 Duplex Unit p.7- 12 7.1[...]

  • Page 8

    Service Manual Exploded Views & Parts List 7-2 Samsung Electronics 7.1 Main Assembly 0 2 1 4 3 3-1 3-2 3-3 3-5 3-4 3-6 4-1 4-2 7 8 8-1 8-2 8-3 8-4 9 9-1 9-2 9-3 10 11 12 13 14 15 16 17 18 19 36 20 20-1 20-2 20-3 21 21-1 21-2 21-3 22 22 23 25 26 29 28 31 30 30 32 34 35 SCF 37 39-2 39-1 39 (Network only) 24 5 6[...]

  • Page 9

    Exploded Views & Parts List Service Manual 7- 3 Samsung Electronics 7.2 Cover Assembly 0 1 2 4 5 6 6-1 6-10 6-2 6-3 6-5 6-4 6-6 6-7 6-8 6-9 6-9 7 (N/A : ML-4551ND) 7-2 7-1 1-12 1-13 1-10 1-1 1 1-9 1-17 1-5 1-2 1-3 1-8 1-7 1-6 1-4 1-16 1-14 1-1 1-15 1-18 3-3 3-1 3 3-2[...]

  • Page 10

    Service Manual Exploded Views & Parts List 7- 4 Samsung Electronics 7.3 Frame Assembly(1/2) 43 1 2 2-1 2-2 2-2 2-4 2-3 2-4-1 2-4-2 2-4-3 3 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-7 3-7 4 4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8 5 5-1 5-2 5-3 5-4 6 8 9 11 12 12 13 14 14-1 14-2 14-3 15 16 17 17 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 39 45[...]

  • Page 11

    Exploded Views & Parts List Service Manual 7- 5 Samsung Electronics Frame Assembly(2/2) 0 47 48 49 50 50 41 49 48-2 48-1 48-3 48-4 48-5 48-6 48-7 48-8 48-9 50-1 50-2 50-3 50-4 50-9 50-5 50-6 50-7 50-6 51 52 53 54 59-9 59-6 58 59-10 59-1 1 59-8 59 60 59-4 59-5-1 59-5-2 59-5 59-7 55 56 59-1 59-2-1 59-2-2 59-2-3 59-2 59-3 57 60-1 60-2 60-5 60-3 61[...]

  • Page 12

    Service Manual Exploded Views & Parts List 7- 6 Samsung Electronics 7.4 Fuser Unit 0 2 1 3 1-1 1-7 1-10 1-8 1-9 1-1 1 1-15 1-26 1-2 1-29 1-12 2-1 2-2 2-3 2-4 3-1 3-2 3-2 3-3 3-3 3-4 3-15 3-5 3-6 3-7 3-9 3-6 3-8 3-7 3-9 3-14 3-14 3-10 3-1 1 3-12 3-13 1-21 1-16 1-17 1-13 1-19 1-17 1-18 1-19 1-20 1-22 H 1-3 1-14 1-14 1-6 1-4 4 4-1 4-2 4-4 4-6 4-3 [...]

  • Page 13

    Exploded Views & Parts List Service Manual 7-7 Samsung Electronics 7.5 REGI Assembly 1 13 11 14 15 15 15 6 6 6 6 3 2 5 16 4 4 5 7 9 0 10 12 16 15[...]

  • Page 14

    Exploded Views & Parts List Service Manual 7- 8 Samsung Electronics 7.6 Main Motor Assembly 0 1 2 16 16 16 16 17 3 3 3 3 3 4 5 7 6 8 9 10 11 12 14[...]

  • Page 15

    Exploded Views & Parts List Service Manual 7- 9 Samsung Electronics 7.7 Deve Motor Assembly 0 1 2 3 4 5 6 8 8 8 7 7 9 10[...]

  • Page 16

    Exploded Views & Parts List Service Manual 7- 10 Samsung Electronics 7.8 Duplex Sorenoid Assembly 0 1 2 13 3 3 5 6 5 8 14 6 9 10 11 6 12 6[...]

  • Page 17

    Exploded Views & Parts List Service Manual 7- 11 Samsung Electronics 7.9 Cassette Assembly 0 31 26 25 24 19 20 30 32 22 1 23 16 13 17 3 4 1 11 8 12 21 1 14 15 18 9 7 10 1 6 5 2 1 27 28[...]

  • Page 18

    Exploded Views & Parts List Service Manual 7- 12 Samsung Electronics 7.10 Duplex Unit 0 1 5 2 3 6 7 8 16 10 11 12 13 14 15 17 18 19 20 21 22 23 33 32 30 27 26 25 26 24 4 28 30 31 20 28 29 9[...]

  • Page 19

    Exploded Views & Parts List Service Manual 7- 13 Samsung Electronics 7.1 1 SCF Unit 31 33 27 34 23 24 2 7 39 3 28 19 56 37 13 1 25 30 44 8 4 29 26 18 41 12 55 9 14 17 15 43 6 5 22 38 40 10 42 20 11 16 21 32 0 36[...]

  • Page 20

    Parts List Drawer# SEC-Code Description & Specification Location Service 7.1-1 JC96-04004B ELA UNIT-FRAME BASE;ML-4550,XEROX/SEC,-, SA 7.1-2 JC96-04064A ELA HOU BASE-HOUSING;ML-4550,SEC,110V/22 SNA 7.1-3 JC97-02230B MEA UNIT-KNOCK_UP MP;ML-3560,SEC,-,110V/ G0470 SA 7.1-3-1 JC61-01251B PLATE-M_KNOCK UP MP;ML-3560,ABS,T2.2,W11 W3027 SA 7.1-3-2 JC[...]

  • Page 21

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE 7.1-35 JC96-04015A ELA UNIT-CASSETTE;ML-4550,SEC,-,110V/220 SA 7.1-36 JC92-01839A PBA-ERASE_LAMP;ML-4550,SEC,-,FR1,-,-,-,2 SNA 7.1-38 JC31-00050A FAN;AD0424HB-C56,CLP-600,PBT+GF,-,3PIN,N SA 7.2[...]

  • Page 22

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE 7.3-4-6 JC61-70965A SPRING ETC-EMPTY;ML-6000,SUS304-WPB,PI0. O1099 SA 7.3-4-7 0604-001095 PHOTO-INTERRUPTER;TR,90%,150mW,DIP-4,BK P0013 SA 7.3-4-7 0604-000165 PHOTO-INTERRUPTER;TR,-,-,-,BK K380[...]

  • Page 23

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE 7.3-48-8 JC61-01239A GUIDE-M SHAFT_BELT;ML-3560,POM,0.6,10,6. SNA 7.3-49 JC96-04016A ELA UNIT-ROLLER_IDLE;ML-4550,SEC,-,110V/ SA 7.3-49-2 JC61-00635A HOUSING-M-RETARD;ML-2150,POM(M90-44),-,- H6[...]

  • Page 24

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE 7.3-83 JC61-70932A SPRING ETC-GUIDE DEVE;ML-5000A,-,D4.3,-, Z4159 SA 7.3-84 JC65-00008A TERMINAL-P-TR_KESTREL;ML-3560,C5210P,-,- K4278 SA 7.3-86 JC65-00009A TERMINAL-SPRING_TR;ML-3560,STS304WPB[...]

  • Page 25

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE 7.4-3-14 6006-001078 SCREW-TAPTITE;WSP,PH,+,M3,L10,ZPC(YEL),S SNA 7.4-4 JC97-02631A MEA UNIT-FUSER_GU_R;ML-4550,-,-,-,-,-,- SNA 7.4-4-1 JC61-01226B GUIDE-M_REAR;ML-3560,HIPS,2.5,98,100.3,B SNA [...]

  • Page 26

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE 7.9-21 JC61-01228A HOLDER-M-PAD_HOUSING;ML-3560,ABS,2.5,48, SNA 7.9-24 JC61-00455A SPRING ETC-PLATE K/UP;SCX-5100,SUS304,24 Z4228 SA 7.9-25 JC61-01245A PLATE-P-KNOCK UP;ML-3560,SECC,1.2,279.1, [...]

  • Page 27

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE #N/A JC63-00875A GROUND-P-BRUSH;ML-3560,C5210P,T0.2,14.4, SNA #N/A JC63-00911A SHEET-GUIDE PATH;ML-3560,PC,T0.254,21,84 SNA #N/A JC63-01206A GROUND-CASSETTE;ML-4550,SUS301,0.2,82.6, SA #N/A JC6[...]

  • Page 28

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE #N/A 3711-002810 HEADER-BOARD TO CABLE;BOX,9P,1R,2mm,STRA SNA #N/A 3711-002811 HEADER-BOARD TO CABLE;BOX,10P,1R,2mm,STR SNA #N/A 3711-003408 HEADER-BOARD TO CABLE;BOX,2P,1R,2mm,STRA SNA #N/A 37[...]

  • Page 29

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE #N/A JC66-00905A SHAFT-DEV;ML-3560,SUM24L+NI,280.0,¥Õ5,-,S SNA #N/A JC66-01237A ROLLER-DEVE;ML-4550,NBR,D16,232,-,-,- SNA #N/A JC66-01267A ROLLER-SHAFT_FEED;ML-4550,SUM22+EPDM,15. SA #N/A JC6[...]

  • Page 30

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE #N/A JC97-02621A MEA UNIT-HOPPER;ML-4550,SAMSUNG,-,-,-,-, SNA #N/A JC97-02622A MEA UNIT-DUCT;ML-4550,SAMSUNG,-,-,-,-,- SNA #N/A JC97-02632A MEA UNIT-FUSER_BK_G;ML-4550,-,-,-,-,-,- SNA #N/A JG72[...]

  • Page 31

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE #N/A 2007-000082 R-CHIP;3.3Kohm,5%,1/10W,TP,1608 SA #N/A 2007-000084 R-CHIP;4.7Kohm,5%,1/10W,TP,1608 SA #N/A 2007-000086 R-CHIP;5.6Kohm,5%,1/10W,TP,1608 SA #N/A 2007-000090 R-CHIP;10Kohm,5%,1/1[...]

  • Page 32

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE #N/A 2203-006676 C-CER,CHIP;10000NF,+80TO-20%,10V,Y5V,201 SNA #N/A 2203-006818 C-CER,CHIP;47000nF,20%,6.3V,X5R,3216 SA #N/A 2401-000480 C-AL;10uF,20%,50V,GP,TP,5x11,5 SA #N/A 2401-002420 C-AL;4[...]

  • Page 33

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE #N/A JC63-01131A COVER-FUSER UPPER;ML-4550,PET+GF30%,FR53 SNA #N/A JC63-01150A COVER-FUSER LOWER;ML-4550,PET+GF30%,FR53 SNA #N/A JC65-00002A TERMINAL-P_PTL L;ML-2060,PB(C5210P),-,-, K4274 SA #N[...]

  • Page 34

    Parts List Drawer# SEC-Code Description & Specification Location Service SA : SERVICE AVAILABLE SNA : SERVICE not AVAILABLE DNA : DELIVERY not AVAILABLE #N/A JC63-00710A SHEET-FILM AGITATOR;ML-3560,PET,0.125,24 SNA #N/A JC66-01264A ROLLER-EXIT_F/UP;ML-4550,SUM+EPDM,17.6,- SNA #N/A JC66-01266A GEAR-FUSER;ML-4550,PPS,OFL4036,M1,Z49,-, SNA #N/A JC[...]