Samsung SCX-4200 Service Manual Page 128
- Page / 158
- Table of contents
- BOOKMARKS
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Ⅰ. Introduction
1-2. Block Diagram
Chrous2
CY25811
FLASHROM
29LV800
SDRAM
8MB
Motor Drv.
A3977
Motor Drv.
A3977
RESET IC
SMPS
HVPS
REG
REG
Exit
Sensor
Feed
Sensor
Cover
Open S/W
24V/5V
Thermistor
Fuser
LSU
OPE
HC
48C50
LCD
KEY
PC
Pickup
Solenoid
FAN 2
Scanner
A(1:20)
D(0:15)
5V
3.3V
1.8V
Main Board
P/Empty
Sensor
Engine
Frame
Developer
Unit
CY25814
3.3V
MP
Sensor
CDRH S/W
MP
Solenoid
LED
USB2.0
Main CLK
10.00MHz
Video CLK
16.59MHz
UART
C
R
D
R
S
R
T
R
Main
Motor
Scan
Motor
Thermostat
TRIAC
FAN 1
LSU
CIS
- 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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