Samsung ML-2010 - B/W Laser Printer Service Manual download pdf (Page 68)

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Disassembly and Reassembly

Samsung Electronics

Service Manual

5-7

5.2.7 HVPS

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. Remove the sheet by releasing the 5 screws which

connects the HVPS and the Sheet.

(Screw x 3:Gold_M3,6003-000269)

3. Separate the HVPS with HVPS ground from the

frame by releasing the remaining 3 screws.

(Screw x 3:Gold_M3,6003-000269)

4. Remove the connector from the separated HVPS.

HVPS Sheet

HVPS

HVPS Ground

1 2 ... 63 64 65 66 67 68 69 70 71 72 73 ... 133 134

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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Samsung ML-2010 - B/W Laser Printer Service Manual Page 68

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