7-2

Troubleshooting

Samsung Electronics

Service Manual

7.1.3 Horizontal Black Band

• Description

1. Dark or blurry horizontal stripes occur in the printing periodically.

(They may not occur periodically.)

Digital Printer

Check and Cause Solution

1. Bad contacts of the voltage terminals to

toner cartridge.

2. The rollers of toner cartridge may be

stained.

Charge roller = 38mm

Supply roller = 45mm

Develop roller = 49mm

Transfer roller = 57mm

1. Clean each voltage terminal of the Charge,

Supply, Develop and Transfer roller.

(remove the toner particles and paper par-

ticles)

2. Clean the right Gear that has relatively

small gap of the teeth in the OPC.

3. If the malfunction persists, replace the

toner cartridge.

7.1.4 Black/White Spot

• Description

1. Dark or blurry black spots occur periodically in the printing.

2. White spots occur periodically in the printing.

Digital Printer

Check and Cause Solution

1. If dark or blurry black spots occur periodi-

cally, the rollers in the Toner cartridge

may be contaminated with foreign matte

or paper particles.

( Charge roller : 38 mm interval

OPC drum : 95 mm interval)

2. If faded areas or voids occur in a black

image at intervals of 95 mm, or black

spots occur elsewhere, the OPC drum

surface is damaged.

3. If a black image is partially broken, the

transfer voltage is abnormal or the trans-

fer roller's life has expired.

1. Run OPC cleaning Mode Print and run the

Self-test 2 or 3 times.

2. In case of 95 mm interval unremovable in 1,

cleanly remove foreign substances stuck on

the OPC location equivalent to black spots

and white spots with a dry duster.

3. The transfer roller guarantees 125,000

sheets printing. If the roller's life is expired,

replace it.

4. In case of 95 mm interval unremovable in 1,

take measures as to replace the toner car-

tridge and try to print out.

5. Clean the inside of the set against the paper

particles and foreign matter in order not to

cause the trouble.

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Zanussi ZBB27650SA Handbücher

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Inhaltsverzeichnis

User manual

Fridge-Freezer

ZBB27650SA

Contents

Safety instructions

Control panel

First use

Daily use

Helpful hints and tips

Care and cleaning

What to do if…

Technical data

Installation

Environmental concerns

222358281-A-082013