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SCX-4100
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111 pages, 6 Mb
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Samsung Electronics
Reference Information
Service Manual
2.4.3
A4 IDC 5%
Patten
Contents
Main
SERVICE
DIGITAL LASER MFP
SCX-4100
Manual
Page
1. Precautions
1.1 Safety Warning
1.2 Caution for safety
1.2.1 Toxic material
1.2.2 Electric Shock and Fire Safety Precautions
1.2.3 Handling Precautions
1.2.4 Assembly / Disassembly Precautions
1.2.5 Disregarding this warning may cause bodily injury
1.3 ESD Precautions
Page
2.2 Acronyms and Abbreviations
Page
2.3 Select a location for the printer
Page
Page
Page
Page
3. Specifications
3.1 General Specifications
3.3 Scan Specification
3.2 Print Specification
3.4 Copy Specification
3.5 Paper Handiling Specification
3.6 Other Specification
Page
Page
Page
Page
Page
4.2.1 Paper Feed Mechanism
4.2.2 Transfer Assy
4.2.3 Drive Assy
4.2.4 Fixing Part(Fuser)
4.2.4.1 Heat Lamp power cut-off (Thermostat)
4.2.5 Scanner Unit
Scan Image Controller
CIS Driver Circuit
Scan Motor Driver Circuit
4.2.6 LSU (Laser Scanner Unit)
4.2.7 Toner Cartridge
4.3 Main PBA
4.3.1 ASIC (Chorus2)
Main function block
4.3.2 Flash Memory
4.3.3 SDRAM
4.3.4 Sensor input circuit
3) Paper Feeding, Toner Cartridge Sensing
4) Paper Exit Sensing
5) Cover Open Sensing
6) DC FAN / SOLENOID Driver
7) Motor Driver
4.4 SMPS & HVPS
4.4.1 HVPS(High Voltage Power Supply)
1) Transfer High Voltage (THV+)
2) Charge Voltage (MHV)
3)Cleaning Voltage (THV-)
4) Developing Voltage (DEV)
4.4.2 SMPS (Switching Mode Power Supply)
1) AC Input
5) Power Switch :
4) Length of Power Cord :
2) Rated Power Output
4.4.3 Fuser AC Power Control
4.5 Engine F/W
4.5.1 Feeding
4.5.1.1 Jam 0 Jam in Feed area
4.5.1.2 Jam 1 Jam inside the print engine
4.5.1.3 Jam 2 Jam in the Exit area
4.5.4 Fusing
Heat Lamp Method
4.5.5 LSU
Page
5. Disassembly and Reassembly
5.1 General Precautions on Disassembly
Whenever servicing the machine, you must perform as follows:
Releasing Plastic Latches
5.2 Front and Rear Cover Units
5.3 Side Covers
5.4.1 Remove Scanner Assy
5.4 Scanner Assy < Caution >
5.4.2 Dismantle Scanner Assy
Scan Upper
< Caution >
Page
5.5 Middle Cover
5.6 Fuser(Heat Lamp Type)
Page
5.7 Exit Roller
5.8 LSU
5.9 Fan
5.10 Drive Assy
5.11 Engine Shield Assy
5.12 Main PBA
5.13 SMPS
5.14 Transfer Roller
5.15 Feed Roller
Page
5.16 Pick Up Roller & Solenoid
Page
6. Alignment and Adjustments
6.1 Engine Test Mode
6.1.1 To enter the Engine Test Mode
To enter the Engine Test mode
6.1.2 Diagnostic
6.2 Paper Path
SCAN PART
6.3 Clearing Paper Jams
6.3.1 In the Paper Tray
6.3.2 In the Paper Exit Area
6.3.3 In the Fuser Area or Around the Toner Cartridge
6.3.4 In the Manual Feeder
6.4 Printing the System Data List
6.5 Clearing the Memory
6.6 Clearing the Drum
6.7 Consumables and Replacement Parts
6.8 The LCD Status Display by Each Error
6.9 Periodic Defective Image
PTL
L S U Fuser Toner Cartridge
OPC Drum Charge Roller Supply Roller Developing Roller
Tramsfer Roller Heat Roller Pressure Roller
7. Troubleshooting
7.1 Printing Problems Causes and Solutions
7.1.1 Vertical Black Lines and Bands
7.1.2 Vertical White Line
7.1.3 Horizontal Black Bands
7.1.4 Black/White Spot
7.1.5 Light Image
7.1.6 Dark Image or a Black
7.1.7 Uneven Density
7.1.8 Background
Page
Page
7.1.14 Stains on Back of Page
Digital Digital Pri
7.1.15 Blank Page Print out (1)
7.1.16 Blank Page Print out (2)
7.2.1 White Copy
7.2 Copy Problems
7.2.2 Black Copy
7.2.3 Abnormal noise
7.2.4 Defective Image Quality
7.3 Paper Feed problems Causes and Solutions
7.3.1 Wrong Print Position
7.3.2 JAM 0
7.3.4 JAM 2
7.3.3 JAM 1
7.3.5 Multi-Feeding
7.3.6 Paper rolled in the fuser
7.3.7 Paper rolled on the OPC Drum
7.4 Printer Faults Causes and Solutions
7.4.1 Fuser Error
7.4.2 LSU Error
7.4.3 Fuser gear melts due to overheating causing Paper Jam.
7.4.4 Paper Empty
7.4.5 Paper Empty without indication
7.4.6 Cover Open
7.4.7 No error message when the cover is open
7.4.8 Defective motor operation
7.4.9 No Power
7.4.10 Printed Vertical Lines become curved
7.5 Toner Cartridge Service
7.5.1 Precautions on Safe-keeping of Toner Cartridge
7.5..2 Service for the Life of Toner Cartridge
7.5.2.1 Redistributing Toner
7.5.3 Standard of guarantee for consumable parts.
7.5.4 Signs and Measures of Poor toner cartridge
Page
Page
7.6 Software Problems Causes and Solutions
7.6.1 The printer is not working (1)
7.6.2 The printer is not working (2)
7.6.3 Abnormal Printing
7.6.4 SPOOL Error
Page
Page
8-2
8.1 Main Assembly
Main Assembly Parts List
8-4
8.2 Frame Assembly
Frame Unit Assembly Parts List
Frame Unit Assembly Parts List(Cont.)
8.3 Scanner Unit Assembly
Scanner Unit Assembly Parts List
8-9
8.4 Fuser Unit Assembly
Page
Fuser Unit Assembly Parts List
8.5 Middle Cover Unit Assembly
Middle Cover Unit Assembly Parts List
8.6 Drive Unit Assembly
Drive Unit Assembly Parts List
8.7 Cassette Unit Assembly
Cassette Unit Assembly Parts List
Page
10-1 Samsung Electronics
Connection Diagram
Service Manual
10. Connection Diagram