Samsung ML-5000A Bedienungsanleitung

SERVICE

SAMSUNG PRINTER

ML-5000A/ML-5000G

Manual

LASER PRINTER CONTENTS

1. Precautions

2. Schematic Diagrams

©Samsung Electronics Co., Ltd. Jul. 1998

Printed in Korea

P/N. JB68-60988A

ELECTRONICS

1. Precautions

Follow these safety, ESD, and servicing precautions to prevent personal injury and equipment damage.

1-1. Safety Precautions

1. Be sure that all built-in protective devices are in

place. Restore any missing protective shields.

2. Make sure there are no cabinet openings through

which people- particularly children- might insert

fingers or objects and contact dangerous voltages.

3. When re-installing chassis and assemblies, be

sure to restore all protective devices, including

control knobs and compartment covers.

4. Design Alteration Warning:

Never alter or add to the mechanical or electrical

design of this equipment, such as auxiliary

connectors, etc. Such alterations and

modifications will void the manufacturerÕs

warranty.

5. Components, parts, and wiring that appear to

have overheated or are otherwise damaged

should be replaced with parts which meet the

original specifications. Always determine the

cause of damage or overheating, and correct any

potential hazards.

6. Observe the original lead dress, especially near

sharp edges, AC, and high voltage power

supplies. Always inspect for pinched, out-of-

place, or frayed wiring. Do not change the

spacing between components and the printed

circuit board.

7. Product Safety Notice:

Some electrical and mechanical parts have special

safety-related characteristics which might not be

obvious from visual inspection. These safety

features and the protection they provide could be

lost if a replacement component differs from the

original. This holds true, even though the

replacement may be rated for higher voltage,

wattage, etc.

Components critical for safety are indicated in

the parts list with symbols . Use only

replacement components that have the same

ratings, especially for flame resistance and

dielectric specifications. A replacement part that

does not have the same safety characteristics as

the original may create shock, fire, or other safety

hazards.

Samsung Electronics 1-1

1-2 Samsung Electronics

Precautions

1-2. ESD Precautions

Certain semiconductor devices can be easily

damaged by static electricity. Such components are

commonly called ÒElectrostatically Sensitive (ES)

DevicesÓ, or ESDs. Examples of typical ESDs are:

integrated circuits, some field effect transistors, and

semiconductor ÒchipÓ components.

The techniques outlined below should be followed

to help reduce the incidence of component damage

caused by static electricity.

CAUTION: Be sure no power is applied to the

chassis or circuit, and observe all other safety

precautions.

1. Immediately before handling a semiconductor

component or semiconductor-equipped assembly,

drain off any electrostatic charge on your body

by touching a known earth ground. Alternatively,

employ a commercially available wrist strap

device, which should be removed for your personal

safety reasons prior to applying power to the unit

under test.

2. After removing an electrical assembly equipped

with ESDs, place the assembly on a conductive

surface, such as aluminum or copper foil, or

conductive foam, to prevent electrostatic charge

buildup in the vicinity of the assembly.

3. Use only a grounded tip soldering iron to solder

or desolder ESDs.

4. Use only an Òanti-staticÓ solder removal device.

Some solder removal devices not classified as

Òanti-staticÓ can generate electrical charges

sufficient to damage ESDs.

5. Do not use Freon-propelled chemicals. When

sprayed, these can generate electrical charges

sufficient to damage ESDs.

6. Do not remove a replacement ESD from its

protective packaging until immediately before

installing it. Most replacement ESDs are

packaged with all leads shorted together by

conductive foam, aluminum foil, or a comparable

conductive material.

7. Immediately before removing the protective

shorting material from the leads of a replacement

ESD, touch the protective material to the chassis

or circuit assembly into which the device will be

installed.

8. Maintain continuous electrical contact between

the ESD and the assembly into which it will be

installed, until completely plugged or soldered

into the circuit.

9. Minimize bodily motions when handling

unpackaged replacement ESDs. Normal motions,

such as the brushing together of clothing fabric

and lifting oneÕs foot from a carpeted floor, can

generate static electricity sufficient to damage an

ESD.

1-3. Lithium Battery Precautions

1. Exercise caution when replacing a Lithium

battery. There could be a danger of explosion and

subsequent operator injury and/or equipment

damage if incorrectly installed.

2. Be sure to replace the battery with the same or

equivalent type recommended by the

manufacturer.

3. Lithium batteries contain toxic substances and

should not be opened, crushed, or burned for

disposal.

7. Schematic Diagrams

7-1 Controller (ML-5000A) 1/7

Controller (ML-5000A) 2/7

Controller (ML-5000A) 3/7

Controller (ML-5000A) 4/7

Controller (ML-5000A) 5/7

Controller (ML-5000A) 6/7

Controller (ML-5000A) 7/7

7-2 Controller (ML-5000G) 1/2

Controller (ML-5000G) 2/2

7-3 OPE Panel (ML-5000A/G)

7-4 Engine (ML-5000A/G) 1/3

Engine (ML-5000A/G) 2/3

Engine (ML-5000A/G) 3/3

7-5 Joint Board (ML-5000A/G)

7-6 HVPS (ML-5000A/G) 1/3

HVPS (ML-5000A/G) 2/3

HVPS (ML-5000A/G) 3/3

7-7 Sensor (ML-5000A/G)

7-8 Switch (ML-5000A/G)

7-9 PTL (ML-5000A/G)

7-1

Samsung Electronics

Controller (ML-5000A) 1/7

7-2 Samsung Electronics

Schematic Diagrams

Controller (ML-5000A) 2/7

7-3

Samsung Electronics

Schematic Diagrams

Controller (ML-5000A) 3/7

7-4 Samsung Electronics

Schematic Diagrams

Controller (ML-5000A) 4/7

7-5

Samsung Electronics

Schematic Diagrams

Controller (ML-5000A) 5/7

7-6 Samsung Electronics

Schematic Diagrams

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