Samsung SCX SCX-4100 Especificações descarregar pdf (Página 82)

7-17

Samsung Electronics

Troubleshooting

Service Manual

7.4.7 No error message when the cover is open

• Description

The Cover Open message does not appears on the LCD even when the print cover is open.

Check and Cause Solution

1. The ‘Open Cover’ microswitch may be stuck or faulty

2. Check the connector and cables between Switch and

main PBA.

1. Use

TECH

mode(“cover sensor test”) to check

cover switch operation. Check and replace switch if

necessary.

2. Replace the Main Control board or Cover Open

S/W as necessary.

1 2 ... 77 78 79 80 81 82 83 84 85 86 87 ... 110 111

SCX-4100 1
Printed in Korea 2
1. Precautions 3
1.2 Caution for safety 4
1.2.3 Handling Precautions 5
Precautions 6
1.3 ESD Precautions 7
2. Reference Information 8
2.1 Tool for Troubleshooting 8
Samsung Electronics 10
Reference Information 10
Service Manual 10
2.4.1 A4 5% Pattern 12
2.4.2 A4 2% Pattern 13
2.4.3 A4 IDC 5% Patten 14
3. Specifications 16
3.2 Print Specification 17
3.4 Copy Specification 18
Specifications 19
3.6 Other Specification 20
4. Summary of Product 22
4.1.2 Rear View 23
4.1.3 Control Panel 24
SCAN PART 25
4.2.4.3 Heat Roller 26
4.2.4.4 Pressure roller 26
4.2.4.5 Safety Relevant Facts 27
• Scan Image Controller 27
CIS Driver Circuit 27
• Scan Motor Driver Circuit 27
Summary of product 28
4.2.7 Toner Cartridge 29
4.3 Main PBA 30
•Main function block 31
1) Paper Empty Sensing 31
2) MP Sensing 31
4) Paper Exit Sensing 32
5) Cover Open Sensing 32
6) DC FAN / SOLENOID Driver 32
7) Motor Driver 32
4.4 SMPS & HVPS 33
1) AC Input 35
2) Rated Power Output 35
3) Consumption Power 35
4) Length of Power Cord : 35
5) Power Switch : 35
6) Feature 36
7) Environment Condition 36
8) EMI Requirement : 36
9) Safty Requrement 36
4.5 Engine F/W 37
4.5.2 Drive 37
4.5.3 Transfer 37
• Heat Lamp Method 38
Summary of Product 39
5. Disassembly and Reassembly 40
Rear Cover 41
Right Cover 42
Scanner Ass’y 43
Scan Upper 44
SLIDE CIS 44
Pulley Idle 45
Pulley Bracket 45
ETC Belt 45
Middle Cover 46
OPE Harness 46
OPE Unit 46
Fuser Ass’y 47
Thermostat 47
Halogen Lamp 47
Heat Roller 47
Idle Gear 47
Fuser Cover 48
Thermister 48
5.7 Exit Roller 49
5.8 LSU 49
5.9 Fan 50
5.10 Drive Ass’y 50
Engine Shield 51
5.13 SMPS 52
5.14 Transfer Roller 53
Feed Idle 54
Shaft 54
Pick up Ass’y 56
Disassembly and Reassembly 57
Menu/Exit Menu/ExitDarkness 58
6.3 Clearing Paper Jams 60
6.3.2 In the Paper Exit Area 61
6.3.4 In the Manual Feeder 62
6.5 Clearing the Memory 63
6.6 Clearing the Drum 63
6.9 Periodic Defective Image 65
7. Troubleshooting 66
7.1.3 Horizontal Black Bands 67
7.1.4 Black/White Spot 67
7.1.6 Dark Image or a Black 68
7.1.5 Light Image 68
Digital Printer 69
7.1.9 Ghost (1) 70
7.1.10 Ghost (2) 70
7.1.11 Ghost (3) 71
7.3.12 Ghost (4) 71
Digital 72
Digital Pri 72
7.2 Copy Problems 73
7.2.3 Abnormal noise 74
Troubleshooting 75
7.3.5 Multi-Feeding 77
7.4.1 Fuser Error 79
7.4.2 LSU Error 79
7.4.4 Paper Empty 80
7.4.6 Cover Open 81
7.4.9 No Power 83
7.5.2.1 Redistributing Toner 85
7.6.3 Abnormal Printing 91
7.6.4 SPOOL Error 92
8.1 Main Assembly 95
Main Assembly Parts List 96
8.2 Frame Assembly 97
8.3 Scanner Unit Assembly 100
8.4 Fuser Unit Assembly 102
8.6 Drive Unit Assembly 107
8.7 Cassette Unit Assembly 108
9. Block Diagram 110
10. Connection Diagram 111

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