Samsung YP-U5 User manual

SERVICE
Manual
MP3 Player
Model Name : YP-U5
Model Code : YP-U5JQR/XAA
MP3 Player
Refer to the service manual in the GSPN (see the rear cover) for the more information.
CONTENTS
1. Precaution
2. Product Specification
3. Disassembly & Reassembly
4. Troubleshooting
5. Exploded View & Part List
6. PCB Diagram
7. Schematic Diagram
YP-U5

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.
GSPN (Global Service Partner Network)
Area Web Site
North America service.samsungportal.com
Latin America latin.samsungportal.com
CIS cis.samsungportal.com
Europe europe.samsungportal.com
China china.samsungportal.com
Asia asia.samsungportal.com
Mideast & Africa mea.samsungportal.com
© Samsung Electronics Co.,Ltd. May. 2009
Printed in Korea

Contents
1. Precaution
1-1 Safety Precautions...........................................................................................1-1
1-2 Static Electricity Precautions............................................................................1-2
2. Product Specification
2-1 Product Feature ...............................................................................................2-1
2-2 Specifications...................................................................................................2-2
2-3 Specifications Analysis.....................................................................................2-3
2-4 Accessories......................................................................................................2-5
3. Disassembly & Reassembly
3-1 Overall Disassembly & Reassembly ................................................................3-1
4. Troubleshooting
4-1 Checkpoints by Error Mode..............................................................................4-2
4-2 Upgrade Methods.............................................................................................4-18
5. Exploded View & Part List
5-1 Exploded View .................................................................................................5-2
5-2 Electrical Part List ............................................................................................5-4
6. PCB Diagram
6-1 MAIN PCB Top .................................................................................................6-2
6-2 MAIN PCB Bottom ...........................................................................................6-4
7. Schematic Diagram
7-1 Overall Block Diagram .....................................................................................7-2
7-2 MAIN ................................................................................................................7-3

Samsung Electronics 1-1
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.

1-2 Samsung Electronics
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).

Samsung Electronics 2-1
Product Specification
2. Product Specification
2-1 Product Feature
Fitness Mode
- A suitable mode for walking, jogging and other exercise.
(provides information such as timer, AUI and estimated burned calories)
PopCon (Pop art + icon: User selectable character)
- Not just a simple device, but recognized as one’s personal possession like an avatar.
→ Personalization
Slim Design
- Aimed at creating an entirely slim body, and actualizing the ‘clip concept’.
- Device thickness: 11.8 mm

2-2 Samsung Electronics
Product Specification
2-2 Specifications
Basic Specification
Rating DC 5.0V / 500mA
Built-in Battery Power 160mAh / DC 3.7V
File Compatibility
MPEG1 Layer3 (8kbps ~ 320kbps, 32kHz ~ 48kHz),
MPEG2 Layer3 (32kbps ~ 160kbps, 16kHz ~ 24kHz),
MPEG2.5 Layer3 (32kbps ~ 160kbps, 8kHz ~ 12kHz),
WMA(48kbps ~ 320kbps, 8kHz ~ 48kHz),
ASF(Audio) (8kbps ~ 192kbps, 8 ~ 48kHz)
Supported Number of
Folders/Files File: Max. 3000 (Including folder)
Earphone Output 18mW/Ch. (based on 16Ω)
Output Frequency Range 40Hz ~ 20kHz
Signal to Noise Ratio 88dB with 20kHz LPF (based on 1kHz 0dB)
Play Time Music: Max. 20 hours (MP3 128kbps, Volume: 15, Normal Sound Mode ,
LCD Off)
Temperature Range for
Operation 23 ~ 95°F (-5 ~ 35°C)
Case Plastics
Weight 0.81 oz
Dimensions (WxHxD) 0.98˝ x 3.46˝ x 0.46˝
FM
FM Frequency 87.5 ~ 108.0 MHz
FM Signal to
Noise Ratio 50 dB
FM T.H.D 1%
FM Useable
Sensitiivity 32dBμ

Samsung Electronics 2-3
Product Specification
2-3 Specifications Analysis
Model YP-U5 YP-U4
Photo
Basic
Storage Type Flash memory (MLC) Flash memory (MLC)
Display 16Gray 4Line OLED (128x64) 16Gray 4Line OLED (128x64)
Platform STMP3770 STMP3650
Battery Li-Polymer Li-Polymer
Battery Capacity 160mAh 300mAh
Playback Time
(Earphone) 20hrs 16hrs
Color Black / White / Red / Pink / Blue Black / Red / Blue
Memory
512M X X
1G X
2G  
4G  
8G X
Files
Supported
MP3  
WMA  
OGG (up to Q10) (up to Q10)
WAV X X
AAC X X
Audible X X
JPEG  
FLAC X
APE X X
WMV X X
MPEG4 (SVI) X X
Swf X X
Others X X
Sound
Field
Preset EQ Normal, Rock, R&B, Dance Normal, Rock, Classical ,Jazz Ballad,
R&B, Dance
User EQ (7 Band Control) (7 Band Control)
Special Effect DNSe Portable:
3D-Studio, 3D-Concert Hall
DNSe Portable:
3D-Studio, 3D-Club,
3D-Concert Hall
Street Mode / Clearity
Sound Feedback (AUI) (AUI)
Speed Control  
Alarm X X
Output Power 18mW/CH 20mW / CH
: application, X: non-application

2-4 Samsung Electronics
Product Specification
Model YP-U5 YP-U4
Photo
Encoding
FM  
FM REC.  
Line In X X
Video X X
Tuner
FM  
RDS  
DMB X X
Etc. X X
Voice
Recording
Voice Recording  
Recording Format MP3 MP3
Recording Mode 4 Mode (32Kbps ~ 128Kbps) 4 Mode (32Kbps ~ 128Kbps)
Additional
Functions
(Sound)
Playlist

Mobile Playlist (Favorite)
PC Playlist (SPL, WPL)

Mobile Playlist (Favorite)
PC Playlist (SPL, WPL)
Folder Play (Browser)  
Library
(Artist, Album, Genre,
Title DB sorting)
(Artist, Album, Genre,
Title DB sorting)
File Navigation  
Additional
Functions
(Video)
Photo Viewer X X
Text Viewer X X
Game X X
Wallpaper X X
Clock X X
Etc. Screen Saver Screen Saver
Additional
Functions
(Other)
Multi Language Menu
30 Language
- KOREA, ENG, FRA, GER, ITA, JPN,
CHA-S, CHA-T, RUS, HUG, POR,
SPA, DUT, POL, SWEDISH, Thai
30 Language
- KOREA, ENG, FRA, GER, ITA, JPN,
CHA-S, CHA-T, RUS, HUG, POR,
SPA, DUT, POL, SWEDISH, Thai
Multi Language tag
Display
(31 Languages) + tag (31 Languages) + tag
Resume (Audio) (Audio)
Bookmark X X
DRM
Netsync (Korea)  
SKT Melon (Korea) X X
WMA DRM  
Janus  
: application, X: non-application

Samsung Electronics 2-5
Product Specification
2-4 Accessories
2-4-1 Supplied Accessories
Accessories Item Item Code Remark
Earphones AH30-00111A
Samsung Service
Center
Clip AH61-02742A
User’s Manual AH68-02172Q

2-6 Samsung Electronics
MEMO

Samsung Electronics 3-1
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
1 Assy Cover
USB
1) Before disassembly
2) Remove the USB Assy Cover.
2 CABINET-
FRONT
/
CABINET-
REAR
1) Remove the two screws on top of the
CABINET-FRONT.
: M14*L4
2) Face the back of the USB upwards
and put the tips of tweezers in
the hole of the HOLDER-TOP for
disassembly.
Be careful not to make any
scratches as you remove it.

3-2 Samsung Electronics
Disassembly & Reassembly
No. Part Name Description Description Photo
2 CABINET-
FRONT
/
CABINET-
REAR
3) Hold the CABINET-FRONT of the
USB with your hand and disassemble
the CABINET-REAR by slowly pulling
it with your thumb.
3 BATTERY 1) Be careful of the battery wire during
disassembly.
2) Disconnect the battery connector
using tweezers.
4 MAIN PCB 1) Disassemble the MAIN PCB by
slowly widening the CABINET-
FRONT with one hand while holding
the USB Jack with the other hand.
2) After disassembly.

Samsung Electronics 4-1
Troubleshooting
4. Troubleshooting
4-1 Checkpoints by Error Mode ................................................................4-2
4-2 Upgrade Methods.................................................................................4-18

4-2 Samsung Electronics
Troubleshooting
4-1 Checkpoints by Error Mode
Oscilloscope Setting Values Normal Voltage 32.768KHz
Voltage/DIV 1V or 2V 0.2V
TIME/DIV 20ms 10us
4-1-1 If there is no power
Connect the
MP3 player to a PC and
charge it for 10 minutes, and
then check if the power
is turned on.
After completing the recovery
update, check it again
No
No
No response on the display even
when pressing the power key.
Does the PC
recognize the MP3 player
when connecting and
resetting it?
Yes
After resetting,
does the PC recognize the
MP3 player through a
recovery update?
Yes
Yes
No
Yes
Complete
No
1
Is the voltage on the battery
above 3.5V?
Yes
Yes
Is the power button faulty?
(See “Faulty Button”)
No
Replace the board.
(Detailed inspection is required.)
Power turns on, but it stops
after pressing the power key.
No
No
Yes
After repairing the USB, check
it again. (See “USB Failure”)
Complete
Replace the battery and check
the voltage again.
Repair the faulty power button
and check it again.
(See “Faulty Button”)
Refer to wave pattern
image of Fig. 4-1.
Is the USB
incorrectly connected?
(See “Incorrect USB
Connection”)
Charge
the MP3 player by
connecting to the PC for 10
minutes and check if the
voltage on the battery is
above 3.5V.

Samsung Electronics 4-3
Troubleshooting
MAIN, page 7-3
5
4
3
2
1
AB
1
2
3
4
5
BA
0 0
JACK1
1
34
5
CON3
IC1
IC6
IC3
IC2
IC4
IC7
MAIN PCB Bottom, page 6-4
<Fig. 4-1>
1
1
1

4-4 Samsung Electronics
Troubleshooting
4-1-2 If there is no sound
Is the YEPP logo
song played?
Do the earphones
work correctly?
Do the sound
and noise stop?
Complete
Are they
present when playing other
files as well?
Does the
same symptom still occur
when the latest firmware is
upgraded?
Yes
No
Yes
Yes
Yes
Yes
Is the
same symptom still
present after replacing the
earphones?
Does it play after
re-soldering the jack?
Replace the earphones.
No No
Yes
Yes
No
No
No
No
No
Yes
If there is no sound
Is the soldering
on IC3, L1, L2, L3, R9, R100
and R24 normal?
Check it again after
re-soldering faulty elements.
Complete
Replace the board.
(Detailed inspection is required.)

Samsung Electronics 4-5
Troubleshooting
4-1-3 If voice recording doesn’t work
Is the recorded
file played correctly?
Complete
Yes
No No
Check the soldering on the
MIC2, C7 and R7 elements.
Yes
Charge the battery.
If voice recording doesn’t work
Is the residual capacity
of the battery enough?
Yes
Upgrade the firmware to the latest
version and then check it again.
Does the recording
timer work correctly?
Yes
Replace or re-solder the faulty
elements, and check it again.
Replace the board.
(Detailed inspection is required.)
No
No

4-6 Samsung Electronics
Troubleshooting
4-1-4 If the button doesn’t work
1
Is the voltage on R14 between
0.9V and 1.0V while the button is
being pressed?
Does the power button on the
PCB work when pressing it?
Check that the resistance
is R14=1KΩ and R90=100KΩ.
Is the soldering done correctly?
Repair or replace the knob key and
check it again.
Repair the elements and check it
again.
Replace the board
(Detailed inspection is required.)
No
Yes
No
Yes
No
Faulty power button
Yes
Refer to wave pattern
image of Fig. 4-2.

Samsung Electronics 4-7
Troubleshooting
2
Is the voltage on R14 between
2.0V and 2.6V while the button
is being pressed?
Does the button on the
PCB work when pressing it?
Check that the resistance
is R14=1KΩ, R90=100KΩ, and R32=4.7KΩ.
Is the soldering done correctly?
Repair or replace the knob key and
check it again.
Repair the elements and check it
again.
Replace the board
(Detailed inspection is required.)
No
Yes
No
Yes
No
Faulty user/recording button
Yes
Refer to wave pattern
image of Fig. 4-2.