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YEPP
Model Name : YP-U4
Model Code : YP-U4JQU/EDC
SERVICE Manual 
YEPP |
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CONTENTS |
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1. |
Precaution |
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2. |
Product Specification |
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3. |
Disassembly & Reassembly |
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4. |
Troubleshooting |
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5. |
Exploded View & Part List |
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6. |
PCB Diagram |
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7. |
Schematic Diagram |
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YP-U4
Refer to the service manual in the GSPN (see the rear cover) for the more information.
GSPN (Global Service Partner Network)
Area |
Web Site |
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North America |
service.samsungportal.com |
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Latin America |
latin.samsungportal.com |
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CIS |
cis.samsungportal.com |
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Europe |
europe.samsungportal.com |
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China |
china.samsungportal.com |
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Asia |
asia.samsungportal.com |
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Mideast & Africa |
mea.samsungportal.com |
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This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.
©Samsung Electronics Co.,Ltd. Aug. 2008 Printed in Korea
Contents
1. |
Precaution |
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1-1 |
Safety Precautions............................................................................................ |
1-1 |
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1-2 |
Static Electricity Precautions............................................................................ |
1-2 |
2. |
Product Specification |
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2-1 |
Product Feature................................................................................................ |
2-1 |
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2-2 |
Specifications.................................................................................................... |
2-2 |
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2-3 |
Specifications Analysis..................................................................................... |
2-3 |
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2-4 |
Accessories...................................................................................................... |
2-4 |
3. |
Disassembly & Reassembly |
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3-1 Overall Disassembly & Reassembly................................................................. |
3-1 |
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4. |
Troubleshooting |
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4-1 Checkpoints by Error Mode.............................................................................. |
4-2 |
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4-2 |
Upgrade Methods............................................................................................. |
4-10 |
5. |
Exploded View & Part List |
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5-1 |
Exploded View.................................................................................................. |
5-2 |
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5-2 |
Electrical Part List............................................................................................. |
5-4 |
6. |
PCB Diagram |
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6-1 |
MAIN PCB Top.................................................................................................. |
6-2 |
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6-2 |
MAIN PCB Bottom............................................................................................ |
6-4 |
7. |
Schematic Diagram |
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7-1 |
Overall Block Diagram...................................................................................... |
7-2 |
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7-2 |
MAIN................................................................................................................. |
7-3 |
Precaution
1. Precaution
1-1 Safety Precautions
1.To remove dust from cabinet, use a dry cloth without using liquid and aerosol cleaner.
2.You should not use attachments not recommended by the company. Otherwise, it may cause critical damage.
3.You should not use this product near water such as bathtub, swimming pool or lake etc.
4.Power supply: A type of battery as displayed on the label should be only used.
5.You should not put any object or liquid into product. Otherwise, it may cause failure or mal-operation.
6.If replacement material is required, service engineer should use materials with the same standard. The use of non-standardized materials may cause failure of product.
Samsung Electronics |
1-1 |
Precaution
1-2 Static Electricity Precautions
Some semi-conductor parts may be easily damaged due to static electricity.
These elements are generally called as static electricity sense device (ESD). Typically examples of EST include IC, some transistor and chip element for semi-conductor with electrical field effect.
The following methods should be used to reduce damage of elements occurred due to static electricity:
1.Contact and emit all the grounding objects with static electricity from your body before handling with elements for semi-conductor or devices with elements for semi-conductor. You should purchase and use static electricity arm rings or commercially available. You should remove it due to potential shock before supplying power to the device under test.
2.You should place appliance on the conductive surface like aluminum film to prevent that static electricity is accumulated or the device is disclosed outside after removing electrical appliance with the ESD device.
3.You should use only soldering iron that is ground when soldering the ESD device.
4.Minimize physical operation when handling with the ESD device for replacement without packing (Otherwise, namely friction between cloth fibers or lifting of the foot from the carpet floor may cause static electricity enough to damage the ESD device).
1-2 |
Samsung Electronics |
Product Specification
2. Product Specification
2-1 Product Feature
Convergence
-UMS/MTP Dual Support
Feature
-Supports Music Subscription SVC
-FM Radio & FM Recording
-Voice Recording
-Playback Speed Adjustment
-Interval Skip Playback
-(A-B) Section Repeat
-Data Cast
Usability
-Recently added playlist
-User Button
-DNSe 2.0
Semiautomatic Sliding USB
Light Effect Using White-LED
4Line 16-Gray OLED Display (128 x 64)
Sleek Touch Pad
Samsung Electronics |
2-1 |
Product Specification
2-2 Specifications
Basic Specification
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Rating |
DC 3.7V / 500mA |
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Built-in Battery Power |
300 mAh / DC 3.7V |
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File Compatibility |
MPEG1/2/2.5 Layer3 (8kbps ~ 320kbps, 8kHz ~ 48kHz) |
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WMA (48kbps ~ 192kbps, 8kHz ~ 48kHz) |
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Supported Number of Files |
Folder: Max. 1000 / File: Max. 3000 |
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Earphone Output |
20mW/Ch. (based on 16Ω) |
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Output Frequency Range |
40Hz ~ 20kHz |
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Signal to Noise Ratio |
90 dB with 20 kHz LPF (based on 1kHz 0 dB) |
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Play Time |
Maximum of 16 hours for music playback |
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(based on: MP3 128kbps, Volume: 15, Normal Mode, Display Off) |
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Temperature Range for |
-5 ~ 35°C (23~95°F) |
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Operation |
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Case |
Plastics |
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Weight |
0.97 oz |
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Dimensions (W x H x D) |
1.06˝ x 3.27˝ x 0.51˝ |
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FM Frequency |
87.5 ~ 108.0MHz |
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FM Signal to |
55 dB |
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Noise Ratio |
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FM Radio |
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FM T.H.D |
1% |
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FM Useable |
38dBu |
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Sensitivity |
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2-2 |
Samsung Electronics |
Product Specification
2-3 Specifications Analysis
Model Name |
YP-U4 |
YP-U3 |
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Photo |
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Color |
Black/Red/Blue |
Black/White/Pink/Green/Blue |
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PC Interface |
USB 2.0 |
USB 2.0 |
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Power |
Battery time: Li-poly 16 Hours |
Battery time: Li-poly 15 Hours |
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LCD |
16Gray 4Line OLED (128x64) |
Mono 4Line OLED (128x64) |
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Key |
Tact Key: Play (Power)/Rec (User) |
Tact Key: Play (Power)/Rec (User) |
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Touch: FF/REW/Select/Vol+/Vol-/Back |
Touch: FF/REW/Menu/Vol+/Vol- |
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External Material |
IN-Mold |
Surface Deposition, IN-Mold |
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Accessory |
EP-370/Quick Guide/Install CD |
EP-360/Quick Guide/Install CD |
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PC Software |
Samsung Media Studio |
Samsung Media Studio |
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Minimum System |
Windows 2000/XP/Vista |
Windows SE/ME/2000/XP |
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Requirements |
Pentium 500MHz |
Pentium 133MHz |
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Samsung Electronics |
2-3 |
Product Specification
2-4 Accessories |
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2-4-1 Supplied Accessories |
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Accessories |
Item |
Item code |
Remark |
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Earphones |
AH59-01884A |
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Samsung Service Center |
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Program Installation CD |
AH46-00058C |
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2-4 |
Samsung Electronics |
Disassembly & Reassembly
3. Disassembly & Reassembly
3-1 Overall Disassembly & Reassembly
-Be careful to follow the disassembly sequence described in the manual. Otherwise, the product may be damaged.
-Be sure to carefully read and understand the safety instructions before performing any work as the IC chips on the PCB are vulnerable to static electricity.
-Assemble in the reverse order of disassembly.
No. |
Part Name |
Description |
Description Photo |
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1 |
ASSY- |
1) With the USB hinge out, put the |
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WINDOW |
disassembling tool into the hole in the |
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LCD |
back of the serial label. |
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When separating them, be careful |
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not to make scratches. |
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2)Press on the disassembling tool and lift the ASSY-WINDOW LCD.
3)Lift the Connector Locker and then remove the ASSY-WINDOW LCD.
Samsung Electronics |
3-1 |
Disassembly & Reassembly
No. |
Part Name |
Description |
Description Photo |
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2 |
FRAME |
1) Remove the 2 screws. |
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: CH,+,B,M1.4,L4,NI PLT, |
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2)Lift and remove the FRAME by the part where the pin set appears.
3 |
MAIN PCB 1) Remove the USB FPCB, then hold |
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the ASSY CABINET-BACK by the top |
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and bottom and lift and remove the |
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MAIN PCB. |
2)Appearance when disassembly is complete.
3-2 |
Samsung Electronics |
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Troubleshooting |
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4. Troubleshooting |
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4-1 |
Checkpoints by Error Mode................................................................. |
4-2 |
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4-2 |
Upgrade Methods.................................................................................. |
4-14 |
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Samsung Electronics |
4-1 |
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