Samsung ML-1750 Spécifications télécharger pdf (Page 120)

11-16

SCHEMATIC DIAGRAMS

Samsung Electronics

Service Manual

SMPS Circuit Diagram : 110V (2/2)

24VS

5268-03A

CON3

3.3V

53015-0510

CON4

DGND

3.3V

Q101

KSC1008-Y

D105

1N4003

R119

2.2K

R120

5.6K

R125

100

R126

27K

OP104

SG-288

R127

100

R128

27K

OP103

KPI-512

TNR101

7D561

R115

100

R116

27K

OP103

KPI-512

R117

100

R118

27K

OP101

KPI-512

CON2-23(FAN)

CON2-1(FEED SENSOR)

CON2-2(PAPER EMPTY)

CON2-21(LED-TONER SAVE)

CON2-18(LED-ERROR)

CON2-16(LED-READY)

OPC1

CON2-25(EXIT)

CON2-14(MANUAL)

CON2-24(KEY-DEMO))

1 2 ... 115 116 117 118 119 120

LASER PRINTER 1
ML-1700 Series 1
ELECTRONICS 2
2003. 02 3
1. Precautions 4
1.2 Caution for safety 5
Precautions 6
1.3 ESD Precautions 7
2. Reference Information 8
2.1 Tool for Troubleshooting 8
2.3.1 A4 5% Pattern 10
2.3.2 A4 2% Pattern 11
2.3.3 A4 IDC Pattern 12
REFERENCE INFORMATION 13
3. Specifications 14
3.3 Electrical Specification 15
3.2 Controller Specification 15
3-4 Environmental Range 15
Specifications 16
4. Summary of Product 18
(ML-1750 Only) 19
4.1.3 Control Panel 20
2) Cancel button 21
4.2 System Layout 22
4.2.4.3 Heat Roller 23
4.2.4.4 Pressure roller 23
4.2.4.5 Safety Relevant Facts 24
4.2.6 Toner Cartridge 25
4.3 Main PBA(SPL Model) 26
•Main function block 27
1) Paper Empty Sensing 27
2) MP Sensing 27
4) Paper Exit Sensing 28
5) Cover Open Sensing 28
6) DC FAN / SOLENOID Driving 28
7) Motor Driving 28
4.4 Main PBA (PCL Model) 29
SUMMARY OF PRODUCT 30
4.4.1 Asic(SPGPm) 31
4.4.2 Memory 31
SPGPm Internal Block Diagram 32
4.5 SMPS & HVPS 33
2) Charge Voltage (MHV) 34
3)Cleaning Voltage (THV-) 34
5) Supply Voltage(SUP) 34
1) AC Input 35
2) Rated Power Output 35
3) Consumption Power 35
4) Length of Power Cord : 35
5) Power Switch : 35
4.5.3 Fuser AC Power Control 36
4.6.1.1 Jam 0 37
4.6.1.2 Jam 1 37
4.6.1.3 Jam 2 37
4.6.4.1 Heat Lamp Method 38
4.6.4.2 Q-PID Method 38
4.6.5 LSU 39
5. Disassembly and Reassembly 40
Cassette 41
Top Cover 41
Rear Cover 41
Front Cover 41
5.3 Fuser 42
Fuser Ass’y 43
Idle Gear 43
Thermostat 43
Thermister Harness 44
Thermister 44
5.4 Exit Roller 45
Drive Ass'y 46
Main PBA 47
Inlet Bracket 48
5.11 Transfer Roller 49
Guide paper 50
Disassembly and Reassembly 51
6. Alignment and Adjustments 52
6.1.2 Code 53
6.1.3 Self Diagnostic Mode 54
ALIGNMENT & ADJUSTMENTS 55
6.1.4 Self Test Button 56
6.2 Paper Path 57
6.3 Clearing Paper Jams 58
6.3.2 In the Paper Feed Area 59
Service 60
6.4 Sample Pattern 61
6.7 Periodic Defective Image 64
7. Troubleshooting 66
7.1.3 Horizontal Black Band 67
7.1.4 Black/White Spot 67
7.1.5 Light Image 68
7.1.6 Dark Image or a Black 68
Digital Printer 69
7.1.9 Ghost (1) 70
7.1.10 Ghost (2) 70
7.1.11 Ghost (3) 71
7.1.12 Ghost (4) 71
7.2 bad discharge 73
7.2.3 JAM 1 74
7.2.4 JAM 2 74
7.2.5 Multi-Feeding 75
TROUBLESHOOTING 76
7.3 Malfunction 77
7.3.4 Paper Empty 78
7.3.6 Cover Open 79
7.3.9 No Power 80
7.4 Toner Cartridge Service 82
7.5.3 Abnormal Printing 87
7.5.4 SPOOL Error 88
8.1 Main Assembly 90
Main Assembly Parts List 91
8.2 Frame Unit Assembly 92
8.3 Drive Unit Assembly 95
8.5 Fuser Unit Assembly 98
Samsung Electronics 100
Service Manual 100
9. Block Diagram 101
9.2 SPL Model 102
10. Connection Diagram 103
10.2 SPL Model 104
SCHEMATIC DIAGRAMS 105

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Samsung ML-1750 Spécifications Page 120

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