Samsung ML-1700 Series User manual

SERVICE

LASER PRINTER

ML-1700 Series

ML-1510

ML-1710

ML-1750

Manual

LASER PRINTER 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

7-1

Samsung Electronics

TROUBLESHOOTING

Service Manual

7. Troubleshooting

7.1 Bad image

7.1.1 Vertical Black Line and Band

• Description 1. Straight thin black vertical line occurs in the printing.

2. Dark black vertical band occur in the printing.

Digital Printer

Check and Cause Solution

1. Damaged develop roller in the Developer.

Deformed Doctor-blade or cleaning-

blade.

2. Scratched surface of the discharge roller

in the developer.

3. Partly depression or deformation on the

surface of the transfer roller.

1. If causes 1 and 2 occur in the developer

cartridge, replace the developer and try to

print out.

2. Replace the transfer roller if occurred as

No. 3.

7.1.2 Vertical White Line

• Description White vertical voids in the image.

Digital Printer

Check and Cause Solution

1. Foreign matter stuck onto the window of

internal lenses of LSU mirror.

2. Foreign matter or toner particles between

the developer roller and blade.

(In case the life of the developer has

been expired, white lines or light image

occur in front of the image.)

3. It may occur when Burr and foreign sub-

stances are on the window of the devel-

oper frame.

4. If the fuser is defective, voids occur peri-

odically at the top of a black image.

1. Foreign matter stuck onto the window :

Clean the LSU window with recommend-

ed cleaner(IPA) Clean the window with a

clean cotton swab.

2. Foreign matter in the LSU : Open the

cover of LSU and clean with a cotton

swab on the surface of the reflex mirror.

3. No 3. : Remove the foreign matter and

burr of the exposure window.

(Developer cartridge)

4. No. 4. : Open the front cover and check

ribs that corresponds to the position of

the voids. Remove if found.

5. If the problems are not solved, replace

the developer cartridge.

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 Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-5)

8.3 Fuser Unit Assembly(ML-1510/1710) . . . . . . . . . . . . . . . . page(8-8)

8.4 Fuser Unit Assembly(ML-1750) . . . . . . . . . . . . . . . . . . . page(8-10)

8.5 Cassette Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . page(8-12)

8.6 Drive Unit Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . page(8-14)

SAMSUNG Laser ML-1510 ML-1710 ML-1750 sm_03.pdf

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