Samsung YP-20S/T User manual

DIGITAL AUDIO PLAYER

YP-20S/T

SERVICE

1. Precautions

2. Specifications

3. Location of Controls

4. Troubleshooting

5. Exploded View and Parts List

6. Block Diagram

7. PCB Diagrams

8. Schematic Diagrams

Manual

DIGITAL AUDIO PLAYER CONTENTS

ELECTRONICS

Printed in Korea

AH68-00817A

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Samsung Electronics 1-1

1. Precautions

1. Some semiconductor (“solid state”)devices are easily damaged by static electricity.

Such components are called Electrostatically Sensitive Devices(ESDs); Examples included

integrated circuits and Some filed-effect transistors. The following techniques will reduce

the occurrence of component damage caused by static electricity.

2. Immediately before handling any semiconductor components or assemblies, drain the electrostatic change

from your body by touching a known earth ground.

Alternatively, wear a discharging wrist-strap device. (Be sure to remove it prior to applring

Power-this is an electric shock precaution.)

3. After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum

foil to prevent accumulation of electrostatic charge.

4. Do not use freon-propelled chemicals. These can generage electrical charges that damage ESDs.

5. Use only a grounded-tip soldering iron when soldering ESDs.

6. Use only anti-static solder removal device. Many solder removal devices are not rated as

“anti-static”; these can accumulate sufficient electrical charge to damage ESDs.

7. Do not remove a replacement ESDs from its protective package until you are ready to install it.

Most replacement ESDs are packaged with leads that are electrically shorted together by conductive materials.

8. Immediately before removing the protective material from the leads of a replacement ESDs,

touch the protective material to the chassis or circuit or assembly into which the device will

be installed.

9. Minimize body motions when handling unpackaged replacement ESDs. Motions such as

brusing clothes togetherer or lifting a foot from a carpeted floor can generate enough static

electricity to damage an ESDs.

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Precautions

1-2 Samsung Electronics

MEMO

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Samsung Electronics 2-1

2. Specifications

YP-20S/T

12MHz, 16bit CISC

Built-in Memory 32MB (YP-20T)/64MB (YP-20S)

1.5V

ONE AAA-Size/4-hr or longer playing time (with alkaline batteries)

42x70x22.1mm /32G

Plastic

2.4Mbps at least

85dB

5mW

20Hz - 20KHz

Model

Processor

Memory Capacity

Power

Battery

Dimensions (W x H x D)

Case

File Transmission Speed

Noise Ratio

Earphone Output Power

Output Frequency Range

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Specifications

2-2 Samsung Electronics

MEMO

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Samsung Electronics 3-1

3. Location of Contols

3-1 Front Panel

3-2 Rear Panel

Forward / Reverse button

Volume control button

LCD

Stop / Play

Pause button

Mode / Menu button

SAMSUNG

Earphone jack

Battery Cover Lock

Connection cable

terminal

Battery Case

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Location of Controls

3-2 Samsung Electronics

MEMO

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Samsung Electronics 4-1

4. Troubleshooting

Symptoms Possible Causes Action Remark

No Power Faulty U8, Q4 Replace Main PCB

Faulty Display Faulty LCD Replace LCD

Faulty Download Faulty J1 J1 soldering Check

When connected “CONNECT” character will not disolay on LCD window.

Faulty U2, Y1 Replace Main PCB

No Sound Faulty U8, U10 Replace Sub PCB

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Troubleshooting

4-2 Samsung Electronics

MEMO

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Samsung Electronics 5-1

5. Exploded View and Parts List

ŒAH97-00726A ASSY CABINET TOP;ABS,YP-20S/T,BROWN YP-20S

AH97-00725A ASSY CABINET TOP;ABS,YP-20S/T,BLUE YP-20T

´AH97-00728A ASSY CABINET BOTTOM;ABS,YP-20S,64MBYTE YP-20S

AH97-00727A ASSY CABINET BOTTOM;ABS,YP-20T,32MBYTE YP-20T

ˇAH71-00037A COVER-BATTERY;ABS,T1.0,-,-,IVORY,YP-20S/T

¨AH71-00038A CAP;RUBBER MOLD,T0.5,-,-,IVORY,YP-20S/T,-

ˆ6001-000809 SCREW;CH M2*L4 MACHINE

ØAH92-01036A ASSY PCB-MAIN;YP-20S/T,MAIN PCB ASSY COMMON

AH92-01070A ASSY PCB-MAIN;YP-20S/T,MAIN PCB ASSY,CHINA

CHINA/HONG KONG ONLY

∏AH67-00118A CASE BASKET;YP-20S/T,LCD COVER,SAMSUNG,SILVER,LCD

”AH07-00045A LCD;DCM-08B3FT-09,YP-MF64,-,30x60.35x1.7,BLK,-,0.3 COMMON

AH07-00054A LCD;DCM-08B3FT,YP-20S/T,CHINA,30*6

CHINA/HONG KONG ONLY

’AH92-01035A ASSY PCB-SUB;YP-20S,64MBYTE YP-20S

AH92-01034A ASSY PCB-SUB;YP-20T,32MBYTE YP-20T

˝AH59-00119A SPEAKER SYSTEM;YP-20S/T,SB-900NS,1MW,3MW/20MW

ÔAH39-00301A CABLE FORM;YD-138BK12,YP-MF64,4P,1.2M,-,-,PVC,BLAC

AH80-00021A INSTALL-CD;YP-20S/T,INSTALL CD,CD, DOMESTIC,-,-

’



∏

”

Loca-NO. Parts NO. RemarkDescription ; Specification

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