Instruction/ maintenance manual of the product ML-4550 Samsung
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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.
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 .
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.
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.
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.
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.
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.
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.
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.
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.
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 .
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.
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.
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.
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.
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.
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.
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.
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 1.
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.
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.
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.
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.
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.
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.
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.
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.
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,.
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.
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,SA.
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.
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.
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,.
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.
An important point after buying a device Samsung ML-4550 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Samsung ML-4550 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Samsung ML-4550 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Samsung ML-4550 you will learn all the available features of the product, as well as information on its operation. The information that you get Samsung ML-4550 will certainly help you make a decision on the purchase.
If you already are a holder of Samsung ML-4550, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Samsung ML-4550.
However, one of the most important roles played by the user manual is to help in solving problems with Samsung ML-4550. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Samsung ML-4550 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
