Samsung Scx-4100 series Bedienungsanleitung

SERVICE

DIGITAL LASER MFP

SCX-4100

Manual

DIGITAL LASER MFP CONTENTS

1. Precautions

2. Reference Information

3. Specifications

4. Summary of product

5. Disassembly and Reassembly

6. Alignment and Adjustments

7. Troubleshooting

8. Exploded Views and Parts List

9. Block Diagram

10. Connection Diagram

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6-1

Samsung Electronics

Alignment & Adjustments

Service

Manual

6. Alignment and Adjustments

This chapter describes some of the main service procedures including:

Using the EDC mode; Clearing paper jam and test patterns.

Much of this chapter is also included in the user's guide.

6.1 Engine Test Mode

The Engine Tests Mode supplies useful functions to check the condition of the engine. It tests the condition of

each device and displays the result of the test on the LCD. It is classified into 5 functions (0~4), and are shown

below.

6.1.1 To enter the Engine Test Mode

To enter the Engine Test mode

Press in sequence, and the LCD briefly displays

'Engine Test [Diagnostic]', the machine has entered Engine Test Mode.

• To enter a lower menu (Sub menu) Press the Start/Enter key.

• To exit into an upper menu Press the Menu/Exit key.

• To return to the user menu Press the Menu/Exit key.

6.1.2 Diagnostic

Menu/Exit Menu/ExitDarkness

Main Menu Engine test Remark

ENGINE TEST Motor Test 1 : On, 2 : Off

MTR FAN SOL ETC PickUp Test 1 : On, 2 : Off

Fan Test 1 : On, 2 : Off

Manual Clt Test 1 : On, 2 : Off

PTL Test 1 : On, 2 : Off

ENGINE TEST LSU Motor Test 1 : On, 2 : Off

LSU TEST LSU Hsync Test 1 : On, 2 : Off

LD Test 1 : On, 2 : Off

ENGINE TEST Feed Sen Test Check : Check Start

SENSOR TEST Next : Next Sensor Check

Exit Sen Test Check : Check Start

Next : Next Sensor Check

Cover Sen Test Check : Check Start

Next : Next Sensor Check

Empty Sen Test Check : Check Start

Next : Next Sensor Check

Manual Sen Text Check : Check Start

Next : Next Sensor Check

ENGINE TEST Therm ADC 220~85 1 : On, 2 : Off (maintain the fusing temp. 65C~230C)

HEAT TEST

ENGINE TEST MHV Test 1 : On, 2 : Off (-1550V ± 50V)

HVPS TEST Dev Bias Test 1 : On, 2 : Off (-430V ± 20V)

THV EN/NEG Test 1 : On, 2 : Off (-1000V +300V/-150V)

THV ON (1300V) 1 : On, 2 : Off (+1300V ± 20V)

THV ADC 1300V 1 : On, 2 : Off

THV ADC 600V~3550V 1 : On, 2 : Off (Compare each ADC Value)

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7-1

Samsung Electronics

Troubleshooting

Service Manual

7. Troubleshooting

7.1 Printing Problems – Causes and Solutions

7.1.1 Vertical Black Lines and Bands

• Description 1. Straight thin black vertical lines occur in the printing.

2. Dark black vertical bands occur in the printing.

Digital P inter

Check and Cause Solution

1. Damaged developer roller, deformed

Doctor-blade or cleaning-blade in the

Toner cartridge.

2. Scratched surface of the charge roller in

the toner cartridge.

3. 3. Depression or deformation of the

surface of the transfer roller.

1. Replace the toner cartridge and test

again.

2. Replace the toner cartridge and test

again.

3. Replace the transfer roller and test again.

7.1.2 Vertical White Line

• Description White vertical voids in the image.

Digital Printer

Check and Cause Solution

1. 1. Contamination of the window or

internal lenses of LSU mirror.

2. Foreign object inside the toner cartridge

or low toner.

3. Foreign object, contamination or burr on

the edge of the toner cartridge window.

4. If the fuser is defective, voids occur

periodically at the top of a black image.

5. Contamination of the OPC drum.

6. Depression or deformation of the surface

of the transfer roller

1. Clean the LSU window with recommended

cleaner (IPA) Clean the window with a

clean cotton swab. If dirt is inside the LSU

– replace LSU.

2. Replace the toner cartridge.

3. Clean the exposure window.

4. Open the front cover and check the ribs

that correspond to the position of the

voids. Remove if found.

5. If the problems are not solved, replace

the toner cartridge.

6. Replace the transfer roller.

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8-1

Samsung Electronics

Exploded View & Parts List

Service Manual

8. Exploded Views and Parts List

8.1 Main Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-2)

8.2 Frame Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-4)

8.3 Scanner Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-7)

8.4 Fuser Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-9)

8.5 Middle Cover Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-11)

8.6 Driver Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-13)

8.7 Cassette Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-14)

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