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SCX-4200
8.6. Scan Assembly Exploded View
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145 pages, 8.87 Mb
Exploded Views & Parts List
Service Manual
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8.6. Scan Assembly Exploded View
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Contents
Main
Manual
SERVICE
SCX-4200 Series
DIGITAL LASER MFP
SCX-4200 Series
ELECTRONICS
Contents
Continued
5. Disassembly and Reassembly
6. Troubleshooting
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
1.4 Super Capacitor or Lithium Battery Precautions
2. Product Specification
2.1 Product Overview
2.2 Specifications
2.2.1 General Specifications
2.2.3 Scan Specification
2.2.2 Print Specification
2.2.4 Copy Specification
2.2.5 Paper Handiling Specification
2.2.6 Other Specification
Accessory Items
Page
Page
Page
3.1.4 System Layout
3.1.4.1 Paper Feed Mechanism
3.1.4.2 Transfer Assy
3.1.4.3 Drive Assy
3.1.4.4 Fixing Part(Fuser)
3.1.4.5 Scanner Unit
3.1.4.6 LSU (Laser Scanner Unit)
3.1.4.7 Toner Cartridge
3.2 H/W Structure and Descriptions
3.2.1 CPU Part
IP_TOP
3.2.2 Scan Part
3.2.3 Ope Pannel
3.2.4 Printer Section
3.2.4.1 ASIC
System Overview
Chorus 2 Block Diagram
General Purpose I/O
3-13
CPU Unit
3.2.5 Copier Part
3.2.6 SMPS & HVPS
3.2.6.1 HVPS (High Voltage Power Supply)
3.2.6.2 SMPS (Switching Mode Power Supply)
Page
3.2.7 FUSER AC POWER CONTROL
3.3 S/W Structure and Descriptions
3.3.1 Architecture
Sensors signals
The following diagram shows the Engine Control System.
Fig 1. The architecture of the engine firmware
3.3.2 S/W Overview
3.3.2.1 Power on Initial Module
3.3.2.2 Engine Print Processing Control Module
3.3.2.3 Print Interface Module
3.3.2.4Engine Unit Control Module
3.3.2.5Paper Size
3.3.2.6Paper Type
3.3.3 Functional Requirements of Fixing Unit (Fuser) Handling
3.3.3.1 Print Mode
3.3.3.2 Paper Type
3.3.3.3 Paper Size
3.3.3.4 Accumulated Printing Pages
Page
3.3.4 Functional Requirements for LSU Control
3.3.4.1 LSU Ready Check
3.3.4.2 Sequence of LSU module
3.3.5 Functional Requirements of Environment Recognition
3.3.5.1 Transfer Roller
3.3.5.2 Air Temperature Sensor
3.3.5.3 Environment Recognition
3.3.6 Functional Requirements of HVPS Control
3.3.6.1 MHV
3.3.6.2 THV
3.3.7 Functional Requirements of Power Save Mode
3.3.8 Functional Requirements of Toner Cartridge
3.3.8.1 Installation Toner Cartridge
3.3.8.2 Toner Save
3.3.9 Functional Requirements of OPC Drum
3.3.9.1 Clean OPC Drum
3.3.13 Checking Paper jam
3.3.13.1 Paper Jam 0
3.3.13.2 Paper Jam1
3.3.13.3 Paper Jam2
3.3.14 Out Bin Tray Full
3.3.15 Temperature
3.3.15.1 Open Heat Error
3.3.15.2 Low Heat Error
3.3.15.3 Over Heat Error
3.3.16 LSU Error
4. Alignment and Adjustments
4.1 Engine Test Mode
4.1.1 To enter the Engine Test Mode
To enter the Engine Test mode
4.1.2 Diagnostic
4.2 Paper Path
4.3 Clearing Paper Jams
4.3.1 In the Paper Tray
4.3.2 In the Paper Exit Area
4.3.3 In the Fuser Area or Around the Toner Cartridge
4.3.4 In the Manual Feeder
4.4 Printing the System Data List
4.5 Clearing the Memory
4.6 Clearing the Drum
4.7 Consumables and Replacement Parts
4.8 The LCD Status Display by Each Error
4.9 Periodic Defective Image
4.10 Error Message
2nd level 3rd level 4th level Default Value Descriptions Upper Level -- Upper Level Left/Ri
g
ht && Enter --16 Character Left/Ri
g
DIRECT KEY
1st level
Data Setup
Samsung Electronics
Service Manual 4-10
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 Cover
5.3 Rear Cove
5.4 DC Fan
5.5 Right Side Cover
5.6 Left Side Cover
5.7 Scanner Unit
Page
Page
5.8 OPE Unit
5.9 Middle Cover Unit
5.10 Fuser
Page
5.11 Exit Roller
5.12 LSU
5.14 Drive Ass'y
5.13 Fan
5.15 Engine Shield Ass'y
5.16 Main PBA
5.17 SMPS
5.18 CRUM PCB
5.19 Transfer Roller
5.20 Feed Roller
Page
5.21 Pick Up Roller & Solenoid
Page
6. Troubleshooting
6.1 Printing Problems Causes and Solutions
6.1.1 Vertical Black Lines and Bands
6.1.2 Vertical White Line
6.1.3 Horizontal Black Bands
6.1.4 Black/White Spot
6.1.5 Light Image
6.1.6 Dark Image or a Black
6.1.7 Uneven Density
6.1.8 Background
Page
Page
6.1.14 Stains on Back of Page
Digital Digital Pri
6.1.15 Blank Page Print out (1)
6.1.16 Blank Page Print out (2)
6.2.1 White Copy
6.2 Copy Problems
6.2.2 Black Copy
6.2.3 Abnormal noise
6.2.4 Defective Image Quality
6.3 Paper Feed problems Causes and Solutions
6.3.1 Wrong Print Position
6.3.2 JAM 0
6.3.4 JAM 2
6.3.3 JAM 1
6.3.5 Multi-Feeding
6.3.6 Paper rolled in the fuser
6.3.7 Paper rolled on the OPC Drum
6.4 Printer Faults Causes and Solutions
6.4.1 Fuser Error
6.4.2 LSU Error
6.4.3 Fuser gear melts due to overheating causing Paper Jam.
6.4.4 Paper Empty
6.4.5 Paper Empty without indication
6.4.6 Cover Open
6.4.7 No error message when the cover is open
6.4.8 Defective motor operation
6.4.9 No Power
Page
6.5 Toner Cartridge Service
6.5.1 Precautions on Safe-keeping of Toner Cartridge
6.5..2 Service for the Life of Toner Cartridge
6.5.2.1 Redistributing Toner
6.5.3 Standard of guarantee for consumable parts.
6.5.4 Signs and Measures of Poor toner cartridge
Page
Page
6.6.2 Abnormal Printing
6.6 Software Problems Causes and Solutions
6.6.1 The printer is not working (1)
6.6.3 SPOOL Error
Block Diagram
7-1
7. Block Diagram
7.1 System Block Diagram
OPE
HVPS
SMPS
8. Exploded Views and Parts List (SCX-4200/XAX)
Contents
8-2
8.1 Main Exploded View
8-3
8.2. Housing Base Exploded View
8-4
8.3. Frame Assembly Exploded View
Transfer Roller
8-5
8.4. Fuser Unit Exploded View
8.5. Drive Assembly Exploded View
8-7
8.6. Scan Assembly Exploded View
8.7. OPE Assembly Exploded View
8.8. Cassette Assembly Exploded View
Service Parts List(Model: SCX-4200/XAX)
Page
Page
Page
Page
Page
Page
Connection Diagram
9-1
9. Connection Diagram
9.1 SCX-4200 Connection Diagram
FAN 2
CDRH S/ W
SMPS/H VPS
10. Schematic Diagrams
10.1
Main Board(1/7)
Page
Schematic Diagram
Service Manual 10-3
Samsung Electronics
This Document can not be used without Samsungs authorization.
Main Board(3/7)
Page
This Document can not be used without Samsungs authorization.
Main Board(5/7)
Page
Page
10.2 OPE Circuit Diagram
Page
SMPS-110V(2/4)
Page
Page
Page
SMPS-220V(2/4)
Page
Page
Page
11.2 Acronyms and Abbreviations
Page
11.3 Select a location for the printer