Samsung ML-4551NR Manuals

Manuals and User Guides for Samsung ML-4551NR. We have 2 Samsung ML-4551NR manuals available for free PDF download: Service Manual

Samsung ML-4551NR Service Manual

Samsung ML-4551NR Service Manual (185 pages)

DIGITAL LASER PRINTER ML-4550 Series

Brand: Samsung | Category: Printer | Size: 12.68 MB

Table of Contents

Table of Contents
2
1 Precautions

6
2 Product Specifications

11
- Product Overview
  11
- Specifications
  11
  - General Specifications
    11
  - Controller & S/W
    12
  - Paper Handling
    13
  - Consumables
    14
  - Reliability & Service
    14
  - Environment
    14
  - Options
    15
  - Others
    15
- Model Comparison Table
  16
3 Summary of Product

18
- Printer Components
  18
  - Front View
    18
  - Rear View
    19
  - Control Panel
    20
  - Special Features
    22
- System Layout
  24
  - Feeding
    25
  - Transfer
    26
  - Driver Ass'y
    26
  - Fuser
    26
  - LSU (Laser Scanner Unit)
    26
  - Print Cartridge
    27
- Engine H/W Specifications
  28
  - ML-4550 (PCL) Main Board
    28
  - SMPS & HVPS Board
    33
  - Fuser Ac Power Control
    36
  - Engine F/W
    37
4 Alignment and Adjustments

39
- How to Use EDC (Engine Diagnostic Control) Mode
  39
  - EDC Setup
    39
  - Entrance Method for EDC
    39
  - Cover Status
    40
  - Sensor Status
    41
  - Motor Test
    43
  - Fan Test
    43
  - Clutch / Sol
    44
  - Fuser Ctrl
    45
  - Lsu
    45
  - Deve Control
    46
  - Print Test and Option Version
    47
- Paper Path
  48
  - Clearing Paper Jams
    50
  - In the Duplex Unit Area
    53
- Sample Pattern
  55
  - Information
    55
  - Demo
    55
- Periodic Defective Image
  56
- Error Messages
  57
5 Disassembly and Reassembly

60
- General Precautions on Disassembly
  60
- Transfer Roller
  61
- MPF Ass'y
  62
- Holder Pad Ass'y
  63
- Retard Ass'y
  64
- Feed2 Idle Unit
  65
- Cover Right
  66
- Main PBA
  67
- Main Drive Ass'y
  68
- DEVE Drive Ass'y
  69
- Connector PBA
  70
- Solenoid
  71
- Rear Cover
  72
- Cover Left
  73
- Top Cover
  74
- Open Cover
  75
- Inner Cover
  76
- Fuser Ass'y
  77
- Duplex Solenoid Ass'y
  79
- Exit Roller
  80
- Lsu
  81
- DC Fan
  82
- Toner Sensor PBA
  83
- REGI Ass'y
  84
- MP Pick up Ass'y
  85
- Pick up & Feed2 Assy
  87
- Engine Shield
  90
6 Troubleshooting

91
- Procedure of Checking the Symptoms
  91
- The Cause and Solution of Bad Image
  92
  - Horizontal Black Band
    93
  - Light Image
    94
  - Uneven Density
    95
  - Stains on the Back of Page
    98
- The Cause and Solution of the Bad Discharge
  99
- Paper Rolled on the Opc Drum
  103
- The Cause and Solution of the Malfunction
  104
  - Paper Empty
    105
  - Cover Open
    106
  - Paper Empty Without Indication
    106
  - Defective Motor Operation
    108
  - Vertical Line Getting Curved
    109
- Maintaining the Toner Cartridge
  110
  - Redistributing Toner Cartridge
    111
  - Replacing the Toner Cartridge
    112
- The Cause and Solutions of Bad Environment of the Software
  115
  - Abnormal Printing
    117
  - Spool Error
    118
  - Vertical White Line
    120
  - Wrong Print Position
    127
  - Fuser Error
    132
7 Exploded Views & Parts List

147
- Main Assembly
  148
- Cover Assembly
  151
- Frame Assembly
  154
- Fuser Unit
  158
- REGI Assembly
  160
- Main Motor Assembly
  162
- Deve Motor Assembly
  164
- Cassette Assembly
  168
- Duplex Unit
  170
- SCF Unit
  172
8 Block Diagram

174
- System Block Diagram
  174
9 Connection Diagram

178
11 Reference Information

179
- Tool for Troubleshooting
  179
- Acronyms and Abbreviations
  180
- Select a Location for the Printer
  182
- Sample Tests Patterns
  183

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Samsung ML-4551NR Service Manual

Samsung ML-4551NR Service Manual (6 pages)

Brand: Samsung | Category: Printer | Size: 0.14 MB

Table of Contents

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