Samsung ML-2010 - B/W Laser Printer Service Manual Page 73
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Samsung Electronics
Service Manual
Disassembly and Reassembly
5-12
5.2.11 LSU
1. Before Disassembling
-Separate the font cover.(Refer to 5.2)
-Separate the SMPS cover.(Refer to 5.3)
-Separate the Main cover.(Refer to 5.4)
2. Release 3 screws as shown as below, lift up the LSU,
and then disconnect 2 connectors from the separated
LSU. (Screw x 2:Silver_M3,6003-000196)
LSU
- LASER PRINTER 1
- Printed in Korea 2
- Contents 3
- Continued 4
- 1. Precautions 6
- 1.2 Safety Caution 7
- 1.2.3 Handling Precautions 8
- 1.3 ESD Precautions 9
- 2.2.1 General Specifications 10
- 2.2.2 Controller 11
- 2.2.4 Environmental Range 12
- 2.2.5 Toner Cartridge 12
- 2.2.6.1 Input Paper Size 13
- 2.2.6.2 Input capacity 13
- 2.2.6.3 Output capacity 13
- 2.2.6.4 Duplex Printing 13
- 2.3 Model Comparison Table 14
- 3. System Overview 15
- Unit Layout 16
- 3.1.1 Feeding 17
- 3.1.2 Transfer Ass’y 17
- 3.1.3 Driver Ass’y 17
- 3.1.4 FUSER 17
- System Overview 18
- 3.1.6 Toner Cartridge 20
- 3.2.1 H/W Overview 21
- 3.2.1.3 Flash Memory 22
- 3.2.1.4 DRAM 22
- 3.2.2 Main Board 23
- 3.2.3.1 Introduction 25
- 3.2.4 Sensor Controller 28
- 3.2.4.1 Paper Feeding/Width 28
- 3.2.4.2 Paper Empty Sensing 28
- Pin Signal 29
- 3.3.1 Introduction 34
- - F/W Architecture 37
- 3.3.6 LED Behaviors 38
- 3.3.7 Error LED Operation 38
- 3.4.1 Accessory List 39
- 3.4.3 Loading Paper 42
- 3.4.5 Turning the Printer on 44
- 3.4.6 Printing a Demo Page 44
- 4.1.1 Printing a Demo Page 46
- DigitAIIperformance 46
- DigitAIIValue 46
- DigitAIIcompatibility 46
- 4.2.1 OP Panel 47
- 4.2.3 Cancel button 48
- Alignment and Adjustments 49
- 4.5 Periodic Defective Image 50
- 4.6.1 DCU Setup 51
- 4.6.2 Code 52
- 1) Normal Code 52
- 2) Error Code 52
- 4.6.3 Self Diagnostic Mode 53
- 4.6.4 Self Test Button 55
- 4.7 Paper Path 56
- 4.7.1 Clearing Paper Jams 57
- 4.7.2 In the Paper Exit Area 57
- 4.7.3 In the Paper Feed Area 59
- Releasing Plastic Latches 62
- 5.2.1 Front Cover 63
- 5.2.2 MP Tray 64
- 5.2.4 SMPS Cover 65
- 5.2.3 Cassette Tray 65
- 5.2.5 Main Cover 66
- 5.2.6 Top Cover 67
- 5.2.7 HVPS 68
- 5.2.8 RX Drive 69
- 5.2.9 Fuser 70
- Thermo Cap 71
- Thermostat 71
- Thermistor 71
- Engine Shield 72
- (W/Main PBA, SMPS) 72
- Actuator Feed Sensor Lever 72
- Main PBA 72
- 5.2.11 LSU 73
- 5.2.12 Paper Path Frame 74
- 5.2.13 Pick_Up Roller 75
- 6. Troubleshooting 76
- 6.1.1 Basic Check List 77
- 6.1.2 Initial Inspection 78
- 6.2.2 JAM 0 79
- 6.2.1 Wrong Print Position 79
- 6.2.3 JAM 1 80
- 6.2.4 JAM 2 80
- 6.2.5 Multi-Feeding 81
- Troubleshooting 82
- 6.3 Malfunction 83
- 6.3.4 Paper Empty 84
- 6.3.6 Cover Open 85
- 6.3.9 No Power 86
- 6.4 Bad Software Environment 88
- 6.4.3 Abnormal Printing 90
- 6.4.4 SPOOL Error 91
- 6.5.2 Vertical White Line 92
- 6.5.3 Horizontal Black Band 93
- 6.5.4 Black/White Spot 93
- 6.5.5 Light Image 94
- 6.5.6 Dark Image or a Black 94
- 6.5.7 Uneven Density 95
- 6.5.8 Background 95
- 6.5.9 Ghost (1) 96
- 6.5.10 Ghost (2) 96
- 6.5.11 Ghost (3) 97
- 6.5.12 Ghost (4) 97
- 7.1 Main Assembly 100
- 7.2 Frame Assembly 101
- 7.3 Fuser Unit 102
- 7.4 Paper Path Unit 103
- 7.5 MP Tray Assembly 104
- (ML-2010/XEV) 105
- ΒΣΥΤ͑ͽΚΤΥ 106
- (8M x 16bit) 111
- T.SAV EKEY_I N 111
- JUPITER4e 112
- 9. Connection Diagram 113
- 10.1 Main Board(1/5) 114
- Main Board(2/5) 115
- Main Board(3/5) 116
- Main Board(4/5) 117
- Main Board(5/5) 118
- Schematic Diagram 119
- Service Manual 119
- Samsung Electronics 119
- 10-3 SMPS Circuit Diagram 120
- HVPS Circuit Diagram(2/3) 122
- Standard : For general use 124
- Acronyms and Abbreviations(2) 126
- Reference Information 127
- 11.4 Sample Tests Patterns 128
- 12.1.1 Heater Control 129
- Circuit Description 130
- 12.1.2 PWM Controller 131
- 12.1.3 Motor Driver 132
- 12.1.4 LSU Controller 132
- 12.1.5 ADC Controller 134
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