Samsung SCX-4200 Service Manual Page 69
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- Table of contents
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Service Manual
Disassembly and Reassembly
5-12
Samsung Electronics
5.10 Fuser
1. Before you remove the Fuser, you should remove:
- Rear Cover (Refer to 5.3)
2. Unplug the two connectors from the Main PBA and
SMPS, as shown below.
3. Remove the four screws securing the Fuser and
remove it.
Notice: Remove the Fuser taking care not to damage
the Exit Sensor.
4. Remove the two screws securing the Thermostat and
then release the Fuser Harness and Fuser Joint
Harness from both side of the Thermostat, as shown
below. Then take the Thermostat out of the Fuser.
5. Remove the two screws securing the Halogen Lamp
and then release the Fuser Harness and Fuser Joint
Harness from both side of the Halogen Lamp, as
shown below. Then take the Halogen Lamp out of the
Heat Roller.
Fuser Harness
Fuser Joint Harness
Thermostat
Halogen Lamp
Heat Roller
Fuser
- DIGITAL LASER MFP 1
- ELECTRONICS 2
- Continued 4
- 1. Precautions 6
- 1.2.1 Toxic material 7
- 1.2.3 Handling Precautions 8
- Precautions 9
- 1.3 ESD Precautions 10
- 2. Product Specification 11
- 2.2.1 General Specifications 12
- 2.2.3 Scan Specification 13
- 2.2.2 Print Specification 13
- 2.2.4 Copy Specification 14
- Product Specifications 15
- 2.2.6 Other Specification 16
- 3.1.1 Front View 17
- 3.1.2 Sensor 18
- 3.1.3 Control Panel 19
- 3.1.4 System Layout 20
- 3.1.4.1 Paper Feed Mechanism 21
- 3.1.4.2 Transfer Ass’y 21
- 3.1.4.3 Drive Ass’y 21
- 3.1.4.4 Fixing Part(Fuser) 21
- 3.1.4.5 Scanner Unit 22
- System Overview 23
- 3.1.4.7 Toner Cartridge 24
- 3.2.1 CPU Part 25
- - Size: 8Mbyte 26
- - Max Frequency: 133MHz 26
- 3.2.2 Scan Part 27
- 3.2.3 Ope Pannel 27
- 3.2.4 Printer Section 28
- 3.2.4.1 ASIC 28
- Chorus 2 Block Diagram 29
- 3.2.5 Copier Part 30
- 3.2.6 SMPS & HVPS 30
- 3.2.7 FUSER AC POWER CONTROL 34
- Sensors signals 35
- Solenoid & 35
- 3.3.2 S/W Overview 36
- 3.3.2.5 Paper Size 37
- 3.3.2.6 Paper Type 37
- 3.3.3.1 Print Mode 38
- 3.3.3.2 Paper Type 38
- 3.3.3.3 Paper Size 38
- 3.3.3.5 Elapsed Printing Time 38
- 3.3.3.8Environmental Index 39
- 3.3.4.1 LSU Ready Check 40
- 3.3.5.1 Transfer Roller 41
- 3.3.6.1 MHV 42
- 3.3.6.2 THV 42
- 3.3.11 Door Open 43
- 3.3.12 No paper 43
- 3.3.13 Checking Paper jam 44
- 3.3.13.1 Paper Jam 0 44
- 3.3.13.2 Paper Jam1 44
- 3.3.13.3 Paper Jam2 44
- 3.3.14 Out Bin Tray Full 44
- 3.3.15 Temperature 45
- 3.3.15.1 Open Heat Error 45
- 3.3.15.2 Low Heat Error 45
- 3.3.15.3 Over Heat Error 45
- 3.3.16 LSU Error 46
- 4. Alignment and Adjustments 47
- 4.2 Paper Path 48
- 4.3 Clearing Paper Jams 49
- 4.3.2 In the Paper Exit Area 50
- 4.3.4 In the Manual Feeder 51
- 4.5 Clearing the Memory 52
- 4.6 Clearing the Drum 52
- Alignment and Adjustmens 53
- 4.9 Periodic Defective Image 54
- 4.10 Error Message 55
- Releasing Plastic Latches 58
- Front Cover 59
- Cassette 59
- Rear Door 60
- Rear Cover 60
- Harness Holder 61
- (24V, 80mA) 61
- Micro Switch 62
- Right Side Cover 62
- Left Side Cover 63
- Scan Motor 64
- Scanner Unit 64
- Scan Upper Unit 65
- Scan Lower Unit 65
- Disassembly and Reassembly 66
- 5.8 OPE Unit 67
- Middle Cover Unit 68
- Fuser Harness 69
- Fuser Joint Harness 69
- Thermostat 69
- Gear RDCN(25/15) 70
- Thermister Harness 70
- Thermister 70
- 5.11 Exit Roller 71
- 5.12 LSU 72
- Drive Ass'y 73
- Main PBA 74
- Inlet Bracket 75
- CRUM PCB 76
- 5.19 Transfer Roller 77
- 5.20 Feed Roller 78
- Feed Gear1 79
- Ass'y 79
- Feed Roller1 79
- Feed Roller 79
- 6.1.2 Vertical White Line 82
- 6.1.3 Horizontal Black Bands 83
- 6.1.4 Black/White Spot 83
- 6.1.5 Light Image 84
- 6.1.6 Dark Image or a Black 84
- 6.1.7 Uneven Density 85
- 6.1.8 Background 85
- 6.1.9 Ghost (1) 86
- 6.1.10 Ghost (2) 86
- 6.1.11 Ghost (3) 87
- 6.3.12 Ghost (4) 87
- Digital 88
- Digital Pri 88
- 6.2.1 White Copy 89
- 6.2 Copy Problems 89
- 6.2.2 Black Copy 89
- 6.2.3 Abnormal noise 90
- 6.3.1 Wrong Print Position 91
- 6.3.2 JAM 0 91
- 6.3.4 JAM 2 92
- 6.3.3 JAM 1 92
- 6.3.5 Multi-Feeding 93
- 6.4.1 Fuser Error 95
- 6.4.2 LSU Error 95
- 6.4.4 Paper Empty 96
- 6.4.6 Cover Open 97
- 6.4.9 No Power 99
- Troubleshooting 100
- Samsung Electronics 100
- Service Manual 100
- 6.5 Toner Cartridge Service 101
- Digital Printer 102
- 6.6.2 Abnormal Printing 105
- 6.6.3 SPOOL Error 106
- 7. Block Diagram 107
- (SCX-4200/XEU) 108
- Contents 108
- 8.1 Main Exploded View 109
- 8.4. Fuser Unit Exploded View 112
- ΒΣΥΤ͑ͽΚΤΥ 117
- 9. Connection Diagram 124
- Ⅰ. Introduction 125
- Ⅱ. Main PBA 125
- Ⅲ. OPE PBA 125
- Ⅳ. SMPS PBA 125
- Ⅰ. General Specification 126
- Objectives 126
- 2-2. LBP CPU Serises 136
- 2-7. USB INTERFACE 142
- Circuits 145
- Timing Diagram 145
- LED Timing for Color Reading 147
- To Supply DC Bias Voltage 150
- AC to DC and then 150
- DC to DC Conversion 150
- IV. SMPS & HVPS PBA 151
- 11 Reference Information 154
- Reference Information 155
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