Samsung ML-2151N Spezifikationen Seite 98
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Samsung Electronics
TROUBLESHOOTING
Service Manual
7.3 The cause and solution of the malfunction
7.3.1 Fuser Error
• Description
A message "Open fuser/Over heat/Low heat' is displayed in a LCD panel.
Check and Cause Solution
1. Check whether a thermostat, AC wire, and heat
lamp are open or not.
2. Check whether a thermistor is open or not.
3. Heat lamp ON/OFF test
4. It could not operate due to a gear of a fuser is
melted.
1. Replace the fuser if a thermostat is open.
2. Replace the fuser if a thermistor sensor is
located deep inside of a sponge.
3. Check whether the overheat mode circuit
operates normally or not.
4. Replace the fuser.
7.3.2 LSU Error
• Description
A message "PMOTOR ERROR/HSYNC ERROR' is displayed in a LCD panel.
Check and Cause Solution
1. Check whether the LSU connector is disconnected or
not.
2. Check whether the LSU motor is rotating or not.
3. Check the HSYNC signal.
- Replace a LSU
- Replace a main board if the same error occurs again
after replacing a LSU.
- LASER PRINTER 1
- ML-2151N 1
- ML-2152W 1
- 1. Precautions 2
- 1.2 Caution for safety 3
- Precautions 4
- 1.3 ESD Precautions 5
- 2. Reference Information 6
- 2.1 Tool for Troubleshooting 6
- 2.3 Selecting a Location 8
- 2.4.1 A4 5% Patten 9
- 2.4.2 A4 2% Patten 10
- 2.4.3 A4 IDC 5% Patten 11
- 2.6 Wireless LAN 12
- REFERENCE INFORMATION 13
- 3. Specifications 14
- 3.3 Electrical Specification 15
- 3.2 Controller Specification 15
- 3.5 Environmental Condition 16
- Specifications 17
- 4. Summary of Product 18
- 4.1.2 Rear View 19
- 4.1.3 Control Panel 20
- 4.1.3.2 Buttons 21
- Accessing Control Panel Menus 22
- Summary of Product 23
- 4.1.3.5 Special Features 24
- 4.2 System Layout 26
- 4.2.1 Feeding 27
- 4.2.2 Transfer 28
- 4.2.3 Driver Ass'y 28
- 4.2.4 Fuser 28
- 4.2.6 Toner Cartridge 29
- 4.3 Main Board 30
- 4.3.1 Controller 32
- 4.3.2 Memory part 33
- 4.3.3 RESET Circuit 33
- 4.3.4 ClOCK Circuit 33
- 4.3.5 INTERFACE Part 33
- 4.3.6 Sensor input circuit 34
- Exit Sensor 35
- HVPS FuserMain PBA 35
- >>AC Input 37
- >>Rated Power Output 37
- >>Consumption Power 37
- >>Power Switch : Use 37
- 4.4.3 Fuser AC Power Control 38
- 4.5 Engine F/W 39
- 4.5.4 Fusing 40
- 4.5.5 LSU 40
- 5. Disassembly and Reassembly 41
- Open Cover 42
- Transfer Roller 42
- MPF Ass'y 43
- Tray Link 43
- Knock Up Plate Ass'y 43
- Cassette 44
- RH Cover 44
- 5.6 Control Board 45
- Main Drive 46
- Ass'y 46
- MP Solenoid 47
- Main Solenoid 47
- MP Empty 47
- Control Board 47
- Rear Cover 48
- LH Cover 48
- 5.11 DC Fan 49
- 5.12 Rear Cover 49
- Top Cover 50
- Key Panel 50
- Cover Open 50
- Micro Switch PBA 51
- Sensor Cap 51
- Inner Cover 51
- Fuser Ass'y 52
- Gear Bracket 52
- Fuser Upper Unit 52
- Pressure Roller 53
- Exit Motor 54
- Exit Roller 55
- Exit Gear 55
- Exit Roller Rack 56
- LSU Lower Cover 57
- HV Small 57
- Toner Sensor Board 57
- PTL Upper 58
- Gear Cap 58
- REGI Ass'y 58
- 5.22 MP Pick Up Ass’y 59
- Roller Ass'y 61
- 5.24 Pick Up Unit 62
- Engine Shield 64
- Engine Board 65
- LH Guide 65
- (Duplex) 65
- RH Guide 65
- 6. Alignment and Adjustments 66
- ALIGNMENT & ADJUSTMENTS 68
- Service 68
- 6.1.2.5 Sensor Test 71
- 6.2 Paper Path 73
- • Simplex 74
- • Duplex 74
- 6.2.1 Clearing Paper Jams 75
- • In the Optional Tray2 76
- • In the Multi-Purpose Tray 76
- 6.2.1.5 In the Duplex Area 79
- • Duplex Jam 1 79
- • Duplex Jam 2 79
- 6.3 Sample Pattern 80
- 6.3.3.1 Remaining Toner: xx% 81
- 6.3.3.2 OPC Count: XXXXXX 81
- 6.3.3.4 Supplier: SAMSUNG 81
- 솔레노이드솔레노이드 84
- 7. Troubleshooting 86
- 7.2.1 Wrong Print Position 93
- 7.2.2 JAM 0 93
- 7.2.4 JAM 2 94
- 7.2.3 JAM 1 94
- 7.2.6 JAM Duplex 2 95
- 7.2.5 JAM Duplex 1 95
- 7.2.7 Multi-Feeding 96
- 7.3.1 Fuser Error 98
- 7.3.2 LSU Error 98
- 7.3.4 Paper Empty 99
- 7.3.6 Cover Open 100
- TROUBLESHOOTING 101
- Samsung Electronics 101
- Service Manual 101
- 7.3.9 No Power 102
- 7.4 Toner Cartridge Service 104
- 7.4.4.1 Invalid Toner 105
- 7.4.4.2 Low Toner 105
- 7.4.4.3 Replace Cartridge 105
- Digital Printer 106
- 7.5.3 Abnormal Printing 111
- 7.5.4 SPOOL Error 112
- 8.1 Main Assembly 115
- Main Assembly Parts List(1/2) 116
- Main Assembly Parts List(2/2) 117
- 8.2 Base-Houshing Assembly 118
- SA : Service Available 119
- 8.3 Frame Assembly (1) 120
- Frame Assembly (2) 121
- Frame Assembly 122
- Parts List(1/3) 122
- Parts List(2/3) 123
- Parts List(3/3) 124
- 8.4 Fuser Assembly 125
- 8.5 Main Driver Assembly 128
- 8.6 Exit Driver Assembly 129
- 8.7 Regi Assembly 130
- 8.8 SMPS Assembly 131
- SMPS Unit Parts List 132
- 8.9 Cassette Assembly 133
- Cassette Assembly Parts List 134
- 8.10 SCF Assembly 135
- SCF Assembly Parts List(1/2) 136
- SCF Assembly Parts List(2/2) 137
- 9. Block Diagram 138
- B LOCK DIAGRAM 139
- 10. Connection Diagram 140
- CONNECTION DIAGRAM 141
- 11. Schematic Diagrams 142
- Main Circuit Diagram(2/9) 143
- Main Circuit Diagram(3/9) 144
- Main Circuit Diagram(4/9) 145
- Main Circuit Diagram(5/9) 146
- Main Circuit Diagram(6/9) 147
- Main Circuit Diagram(7/90) 148
- Main Circuit Diagram(8/9) 149
- Main Circuit Diagram(9/9) 150
- Schematic Diagrams 151
- HVPS Circuit Diagram(220V) 152
- SMPS Circuit Diagram(220V) 154
- SCF PBA Circuit Diagram(2/2) 162
- RAM DIMM Circuit Diagram(2/2) 164
- 11-7 PS3 ROM Circuit Diagram 166
- 11-12 OPC PBA Circuit Diagram 169
- Printed in Korea 171
- Copyright(c) 2003.04 172
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