BBK X17 Service Manual

X17(RU)

service manual

Catalog

Chapter One About Maintenance

1.1 Safety precautions

1.1.1 Precautions for antistatic

1.1.2 About placement position

1.2 Maintenance method

1.2.1 Visualized method

1.2.2 Electric resistance method

1.2.3 Voltage method

1.2.4 Current method

1.2.5 Cutting method

1.2.6 Element substitution method

1.2.7 Comparison method

1.3 Required device for maintenance

Chapter Two Functions and Operation Instructions

1

1

1

1

1

1

2

2

2

2

2

2

3

4

2.1 USAGE INTRODUCTION

2.1.1 Functions and features

2.1.2 Buttons and jacks illustration

2.1.3 Main menu illustration

2.1.4 Playing interface illustration

2.1.5 Tuning interface illustration

2.1.6 Recording interface illustration

2.2 BASIC OPERATION

2.2.1 Install usb drive program

2.2.2 Install usb drive program

2.2.3 Use mobile storage function

2.2.4 Disconnect usb safely

2.2.5 Browse/cancel file

2.2.6 Play music

2.2.7 Play music

4

4

4

5

6

6

6

6

6

7

7

7

7

7

7

2.2.8 Play music

8

2.2.9 A-B repeat function

2.2.10 Recording

2.2.11 Tuning

2.2.12 Tuning

2.3 SETTINGS

2.3.1 Settings

2.3.2 PLAY MODE

2.3.3 Eq select

2.3.4 Sleep

2.3.5 3D

2.3.6 Playlist

2.3.7 Playlist

2.3.8 Fm channel

2.3.9 Screen save

2.3.10 Advanced

8

8

8

8

9

9

9

9

10

10

10

10

10

10

10

2.3.11 Advanced

2.3.12 Advanced

2.4 SPECIFICATION

Chapter Three Servicing and Principle

Section One Principle of the Player

3.1.1 Principle of the player

3.1.2 Block diagram of the player

3.1.3 Function introduction to IC used by the player

Section Two Unit Circuit Principle

3.2.1 FLASH circuit

3.2.2 FM tuning circuit

3.2.3 OLED module circuit

3.2.4 USB jack circuit

3.2.5 Buttons circuit

11

11

11

13

13

13

13

14

15

15

16

17

18

19

3.2.6 Headphone jack circuit

3.2.7 Reset circuit

3.2.8 Power on/off control circuit

3.2.9 Low voltage detecting circuit

20

20

21

21

3.2.10 MIC circuit

22

Section Three Servicing Cases

3.3.1 Servicing cases

3.3.2 Troubleshooting flow chart

Section Four Servicing Parameters

Section Five Function Introduction to IC

3.5.1 Function introduction to PNX0101

3.5.2 Function introduction to G60L263T

3.5.3 Function introduction to TC58512FT

3.5.4 Function introduction to SI1912DL

3.5.5 Function introduction to Lm2703

3.5.6 Function introduction to TEA5767HN

3.5.7 Function introduction to PQ1X28

Chapter Four Assembly and Disassembly Process

4.1 Disassembly process of the player

23

23

28

33

40

40

45

45

46

46

47

48

50

50

4.2 Assembly process of the player

Chapter Cinque PCB board & Circuit diagram

Section One PCB board

Section Two circuit diagram

Chapter six BOM List

53

56

56

58

60

Chapter One About Maintenance

1.1 Safety precautions

1.1.1 Precautions for antistatic

Movement and friction will both bring static electricity which causes serious damages to integrated

IC. Though static charge is little, when a limited quantity of electric charge is added to large-

scaleintegrated IC, as the capacitance is very small in the meantime, now the integrated IC is very much

easy to be struck through by static electricity or the performance will decrease. Thus static electricity

prevention is of extraordinary importance. The following are several measures to prevent static

electricity:

1. Use a piece of electric conduction metal with the length of about 2 metres to insert into the earth,

and Fetch the lead wire from the top of the surplus metal and connect to the required static electricity

device. The length and depth of the metal embedded under the earth should be determined according to

the wettability of the local soil. For humid places, it may be shorter, and longer and deeper for dry places.

If possible, it can be distributed and layed in terms of “#” shape.

2. On operating table-board, the antistatic table cushion should be covered and grounded.

3. All devices and equipments should be placed on the antistatic table cushion and grounded.

4. Maintenance personnel should wear antistatic wrist ring which should be grounded.

5. Places around the operating position should also be covered with electric conduction cushion or

Painted with antistatic paint.

1.1.2 About placement position

1. Audio power amplifier cannot be installed in places with high temperature and humidity.

2. Positions for placement should be stable and secure.

1.2 Maintenance method

1.2.1 Visualized method

Directly view whether abnormalities of collision, lack of element, joint welding, shedding welding,

rosin joint, copper foil turning up, lead wire disconnection and elements burning up among pins of

- 1 -

Elements appear. Check power supply of the machine and then use hands to touch the casing of part of

elements and check whether they are hot to judge the trouble spot. You should pay more attention when

using this method to check in high voltage parts.

1.2.2 Electric resistance method

Set the multimeter in resistance position and test whether the numerical value of resistance of each

point in the circuit has difference from the normal value to judge the trouble spot. But in the circuit the

tested numerical value of resistance is not accurate, and the tested numerical value of integrated IC's

pins can only be used for reference, so the elements should be broken down for test.

1.2.3 Voltage method

Voltage method is relatively convenient, quick and accurate. Set the multimeter in voltage position

and test power supply voltage of the player and voltage of a certain point to judge the trouble spot

according to the tested voltage variation.

1.2.4 Current method

Set the multimeter in current position and test current of the player of a certain point to judge the

trouble spot. But when testing in current method, the multimeter should be series connected in the

circuit, which makes this method too trivial and troublesome, so it is less frequently used in reality.

1.2.5 Cutting method

Cutting method should be combined with electric resistance method and voltage method to use.

This method is mainly used in phenomena of short circuit and current leakage of the circuit. When

cutting the input terminal voltage of a certain level, if voltage of the player rises again, it means that the

trouble lies in this level.

1.2.6 Element substitution method

When some elements cannot be judged good or bad, substitution method may de adopted directly.

1.2.7 Comparison method

A same good PC board is usually used to test the correct voltage and waveform. Compared these

data with those tested through fault PC board, the cause of troubles may be found.

Through the above maintenance method, theoretical knowledge and maintenance experience, all

difficulties and troubles will be readily solved.

- 2 -

1.3 Required device for maintenance

Audio Generator

Digital oscillograph ( 100MHE)

SMD rework station

Multimeter

Soldering iron

Pointed-month pincers

Cutting nippers

Forceps

Electric screw driver

Terminals connecting cord

Headphone

Microphone

- 3 -

Chapter Two

Functions and Operation Instructions

2.1 USAGE INTRODUCTION

2.1.1 Functions and features

#Philips PNX0101audio decode chip

Adopt famous Plilips PNX0101 audio decode chip, special for Hi-Fi MP3 player, forcefully making
up audio signal loss when compressing MP3 to revert audio signal better.
#Sennheiser headphone MX400)

uild high-quality musical effect.
#Support 3D LifeVibes surround stereo sound effect, 9 EQ modes

You may taste heart quaking bass and vivid surround stereo sound effect.
#Play MP3/WMA/WAV files

Support 16kbps 320kbps MP3 file and 8kbps 192kbps WMA file.
#Mobile storage function

Capable of downloading files from Windows resource manager.
#FM tuning function

Auto scanning and auto/manual memory function may listen to FM radio station programs more
easily.And you may record FM program into WAV files directly.
#Voice recording function

May be used to record in class, meeting and interview.
#USB 2.0 transmission (full speed)

USB2.0 full speed data transmission.
#Support firmware upgrading

Function Support upgrading function. You may add new function to the built-in program of this
player conveniently.

2.1.2 Buttons and jacks illustration

TM

1.11.1

#Press for long in any case
#Press in tuning mode
#Press in recording mode
#Press in menu mode

Enter main menu
switch in PRESET and SCAN mode
Exit recording
enter the selected item or confirm the setup the
same as that of button

- 4 -

1.21.2 1.31.3

1.41.4

#Press in Play and tune mode
#Press in Menu mode
#Press in menu mode

1.51.5

#Press in playback mode
#Press for long in playback mode
#Press in tuning Preset mode
#Press in tuning SCAN mode
#Press for long in tuning Preset

mode

adjust volume
move cursor or set item
cancel and exit, or return to the previous menu

the next/previous track

fast forward/backward
select channel
manual scanning

full auto scanning

#Press for long in tuning SCAN

mode
#Menu mode
#Press in menu mode

2

HOLD button: Push towards arrow to lock buttons; and push toward the opposite direction to unlock.

3

#Press in power-off mode
#Press for long in power-on mode
#Press in playback mode
#Press in recording mode
#Press in tuning mode
#Press in menu mode

Automanual scanning
Move cursor or set item
cancel and exit, or return to the previous menu

power on
power off
pause playing
pause recording
pause (mute)
enter the selected item or confirm the setup
(the same as that of M button)

4

#Press for long in menu mode
#Press in playback mode

nter recording mode
A-B repeat

#Press for long when playing

music file(non recording file)
#Press in browsing file mode
#Press for long in tuning mode

5

6

7

8

9

MIC microphone
Hanging rope hole
Headphone jack
USB jack
Battery direction

Switch esound effect
Delete file
Start FM recording

Caution: In my sound effect setup mode, and are left and right cursor, and is exit button.

2.1.3 Main menu illustration

#My music

Memorize music file.

#My Voice

Memorize microphone recording file, such as meeting, classroom and interview recording,
etc.
#Resume Play

Select "Resume Play" and the player begins to play from the position that music stopped
playing last time.
#REC

Select "REC"to enter recording mode.
#FM Radio

- 5 -

Select " FM Radio"to enter radio mode.
#System Setup

Select " System Setup" to set system items.

2.1.4 Playing interface illustration

1

Play State

2

Sound effect mode

3

Playback mode

4

Repeat state

Battery capacity

5

2.1.5 Tuning interface illustration

1

6

Song name and Singer

7

Time that has been played

8

Number of tracks

9

Spectrum display

2

3

4

1

PRESET mode (normal receiving)

2

Frequency of the current radio station

3

Battery capacity

.

4

Frequency bar

5

PRESET channel display

6

SCAN mode (scanning)

2.1.6 Recording interface illustration

5

3

1

Name of recorded file

2

Battery capacity

3

Time that has been recorded

.

As for the name of recorded file "V001.WAV": 001 is serial number of the current recorded track
and arranged according to sequence; WAV is file format after recording

1

2

4

4

The left recordable time

5

Recording state

.

.

2.2 BASIC OPERATION

2.2.1 Install usb drive program

If your computer is Windows 98, you must install drive program if you want to use the mobile
storage function of MP3 player in computer.

1. Place USB drive disc into CD-ROM driver of computer.

2. Connect MP3 player to computer, and the computer will automatically indicate that new firmware

device has been found, and run the installation guide, shown as the following figure.

- 6 -

You only need to find the drive information file

on disc according to prompt information to
finish the installation of drive program.

3. After installation finishes, restart the computer

and you may use the mobile storage function
normally.Shown as the following figure:

2.2.5 Browse/cancel file

#Browse file

In any case, press button for long to
enter "Main Menu". Music fileand recording file
are separately saved in the first two items of
main menu, "My Music" and "My Voice". Press

/

Button to select upward or downward and
then press button to enter files browsing .

2.2.2 Install usb drive program

2.2.3 Use mobile storage function

This player can be used as mobile storage
in Windows ME/2000/XP operating system. In
Windows 98SE and Mac operating system, drive
program must be installed firstly and then used
as mobile storage.Connect MP3 PLAYER and
computer with USB transmission line. After the
bottom right corner of desktop appears “ ”
symbol, the mobile storage function of MP3
PLAYER may be used normally.

NOTE
#To avoid abnormality of the player appears, you

are suggested to power off firstly before
connecting MP3 PLAYER with computer, and
then use USB transmission line to connect
MP3 PLAYER, then connect computer.

#In Windows 98 system, there is no “ ”symbol.

2.2.4 Disconnect usb safely

After operation finishes, click " " symbol
on bottom right corner of Windows desktop with
right button of mouse,and disconnect USB safely
according to the computer prompt.

PRESS
FOR LONG

PRESS

PRESS

#Cancel file

When browsing files, press button and

the cancel dialogue box will pop up.

Press button to select "YES" and

/

then press button to cancel the file. Select
"NO" or press button to exit.

PRESS

PRESS

2.2.6 Play music

#Play music

press button to select song In "My
Music". Press button or select playback in
main menu to begin playing music, meanwhile
the playback interface displays.
#PAUSE PLAYING MUSIC

When playing, press button to switch to
pause state. Press button again to continue
playing.

#NEXT and PREV

When playing, pressing button may skip
to the next track to play. If playback time of the
current track is less than 5 seconds, pressing
button may skip to the previous track to play,
otherwise the current track will be played again if
playback time is more than 5 seconds.

2.2.7 Play music

#FF and FB

When playing, pressing button for long
may realize fast forward.

/

PRESS

- 7 -

PRESS
FOR LONG

When playing, pressing button for long

may realize fast backward.

PRESS
FOR LONG

Caution:

Fast forward and fast backward operation
are only for the current track. After fast
backward/forward to the beginning/ending of
track, it switches into normal playback
automatically.

2.2.8 Play music

#Adjust volume

When playing or tuning, pressing
button or for long may adjust volume. The
display of adjusting volume in music playback
interface is shown as follows:

/

PRESS

PRESS
FOR LONG

Caution:
#To avoid sudden power-off when recording, you

cannot record when in low battery and when
disc is fully written. If you are recording, it

indicates “DISC FULL” and exits recording.
#When recording with microphone, if you press
buttons and the sound of pressing may

probably be recorded.

2.2.11 Tuning

#Enter tuning mode

Select "FM Radio" in main menu and press
button to listen to radio.

#EXIT TUNING MODE

When listening to radio, press button for
long to return to main menu.
#PRESET/SCAN MODE SWITCH

When listening to radio, press button to
switch between PRESET and SCAN mode.

Caution:
#Music playback will be paused when browsing

file.

#In some operating system (such as complex

font Windows), the operation of copying
lyrics/song file and changing song's name may
probably lead to incorrect display. When
playing WMA songs of VBR , pressing buttons
may probably has slow response or has no
lyrics display. When playing some non
standard songs or songs with special format,
noise may probably occur.

2.2.9 A-B repeat function

When playing, if you want to listen to a
certain segment repeatedly, please use A-B
repeat function.Press button for the first time
to select the beginning point that you desire
to repeat play and screen displays " ";press it
for the second time to select the ending point
that you desire to repeat play and screen
displays " ", and system begins to repeat play
between A-B segment. Press button for the
third time to cancel repeat and continue to play.

PRESS PRESS PRESS

2.2.10 Recording

When recording, press button to pause
and press button for long to exit recording
and then make files.

PRESS

1. PRESET mode
#Adjust channel

Press button to enter the next channel,
and press button to enter the previous
channel.

2.2.12 Tuning

#Full auto scanning

In PRESET mode, press button for

/

long to begin full auto scanning. All scanned
radio stations will be saved in PRESET channel
automatically.

PRESS
FOR LONG

2. Scan mode
#Manual/automanual scanning

Press button to increase 0.1MHz each
time; and press button to decrease 0.1MHz
each time. Press button to save radio station.
Press button for long to increase frequency
continuously and stop until radio station has
been searched. Press button to save radio
station.Press button for long to decrease
frequency continuously and stop until radio
station has been searched. Press button to
save radio station.

- 8 -

#Save radio station

Select channel in Preset mode firstly, and
then switch to SCAN mode to adjust frequency
(manually or automanually). After scanning
desired frequency, press button to save into
the current PRESET channel.

PRESS

CAUTION:

In the course of full auto/automanual
scanning, press or button to stop

/

scanning.
#FM RECORDING

In tuning mode, press button for long
to enter FM recording. Press button to stop
recording and make recording file .FM recording
makes WAV format file.

2.3 SETTINGS

2.3.1 Settings

2.3.2 PLAY MODE

PRESS

The playback symbol displays on playback

interface is shown as follows:

play according to track sequence.
random play any one track.
play the track edited in program list.
browse play each track for 10 seconds.
repeat play single track.
repeat play all tracks.
repeat play all tracks in this Folder.

Caution:
#Play mode is defaulted to "Normal" each time

when power on.

#Files in "My Voice" only support sequence

playback.

#When playing files in "My Voice", there is no

"Play mode" item.

PRESS

2.3.3 Eq select

Press button to enter "EQ SELECT",
and then use to move cursor, shown as
follows:

/

#Play Mode
Normal
Shuffle
Playlist
Intro
REP One
REP ALL
REP DIR
#EQ Select
Normal
3D
PURE
POP
Clas
Jazz
Rock
Dbass
Disco
My EQ
#Sleep
Disable - 120Min

#3D Setup
BassBoost
ConcertSound
#Playlist
Browse
Edit
Delete
#FM Channel
Auto
Mono
#Screen Save
Disable - 5Min
#Advanced
My EQ
REC Set
Format
Load Default
System Info
Language

PRESS

The corresponding icons of each EQ mode
in playback mode are shown as follows:

NORMAL

3D

PURE

POP

CLAS

JAZZ

ROCK

DBASS

DISCO

My EQ

Select "3D", and correspond with 3D that
you have preset in "MAIN MENU->SYSTEM
SETUP->3D SETUP. If you have not set it, it is
default value.Select "MY EQ", and correspond
with the sound effect that you have preset in
"MAIN MENU->SYSTEM SETUP->ADVANCED".
If you have not set it, it defaults "MY EQ" to
NORMAL" sound effect.When the cursor moves
to a certain sound effect mode, the sound effect
mode played by MP3 player will switch to that in
the cursor for the moment to facilitate you to
select your desired sound effect mode. Press

Button to confirm this sound effect mode.

CAUTION:When playing files in "REC",
there is no "EQ Select " item.

- 9 -

2.3.4 Sleep

Press button to adjust the timing
power-off time. After setup finishes, press
button to save and then exit, and press
button not to save and then exit. If timing power
off time is 15 minutes, after 15 minutes, MP3
PLAYER will power off automatically.

Caution:
#It is defaulted to be invalid each time when

power on.

#Timing power-on time is a rough time, and may

have difference.

/

PRESS

PRESS

2.3.5 3D

In this menu, "3D “ may be adjusted.
BassBoost can strengthen bass effect; and
concert can build classical sound field effect. At
the same time of confirming clearness,
strengthen hearing feeling. Through adjustment,
you may feel live and vivid sound field effect no
matter where you are.

PRESS

PRESS

2.3.6 Playlist

#Browse

Select "Browse" , and you may check how
many songs have been program-med into
playlist.When browsing playlist. Pressing
button may begin playing.

PRESS

Note: Playback will be paused when in
"Browse" or "Edit" list.

#Edit

PRESS

Select "Delete". After dialogue box pops up,
select "YES", and press button to confirm
and the playlist is cleared.

2.3.7 Playlist

NOTE
#If the operation of adding or cancelling music

files is detected, MP3 PLAYER will clear the
playlist automatically.

#You cannot enter "Edit list" and "Clear list"

when in program playback.

2.3.8 Fm channel

You can select the FM channel in settings.
When select Auto, it changes the channel
automatically when in tunning mode. When
select Mono, it tunes at Mono channel all the
time.

M

PRESS

2.3.9 Screen save

Press button to adjust the screen
saver time. After setup finishes, press button
to save and then exit, and press button not
to save and then exit. If the screen saver setup
time is 3 minutes and no operation occurs within
3 minutes, Mp3 PLAYER will enter screen saver
state automatically.

/

PRESS

PRESS

2.3.10 Advanced

Advanced items include some other system
internal setup, such as user sound effect setup,
default setup and system information.

PRESS PRESS PRESS

As in the above illustration, enter "Edit" and
browse files. The icon before songs in the
playlist is " ". Select a song not in the playlist
and press button to add it intothe list. Select
a song in the playlist ,and press button to
cancel it from the playlist,You can add 15 songs
into the playlist at most.
#Delete

#My EQ

In "My EQ" interface, you may see the

decibel (dB) of each frequency.

PRESS

If you want to adjust the decibel of mediant
(1kHz), operate according to the below
illustration.

- 10 -

2.3.11 Advanced

press button to return to the previous
menu.

PRESS

PRESS

When adjusting width, take 3dB as a step
and the max adjustable range is 15dB. After
setup finishes, press button to confirm and
exit, and press button to exit with the original
setup not being changed.
#REC Set

Here to set the recording quality ,The
recording quality is higher, the sound quality is
better and the used space is more. Three kinds
of recording quality adopt IMA-ADPCM format

PRESS

2.3.12 Advanced

#Format

Enter this menu, and you may format hard
disk. When dialogue box pops up, press
button to move cursor to “YES”, and then press

button to confirm to finish formatting
operation.

/

Caution:
Because firmware will use some space, the
displayed content capacity may probably be
different from the actual capacity.
#Language

Russian and English are supported.

PRESS

#Upgrade

Download the latest firmware upgrading file
from BBK website firstly, such as "BBK_X17RU.
ebn" and "X17RU_Resource.bin", copy the two
files into MP3 PLAYER at the same time, and
then power on again. Find "Upgrade" item in
"ADVANCED" of "SETTINGS", and pressing
button may start upgrading.

After upgrading finishes, MP3 PLAYER will
power on again.

PRESS

PRESS

#Load Default

PRESS

PRESS

If you want to restore MP3 PLAYER to
factory setup state (data and song files cannot
be cancelled), you may select “Load Default”.
After dialogue box pops up, select “YES” , press

button to confirm and then exit to restore to
default state. Select “NO” or press button to
cancel.

CAUTION:Restore to "Default" state is
effective only when power on again.
#System Info

You may find information of firmware
version, total disc capacity and left disc capacity.
In system information menu.

2.4 SPECIFICATION

PRESS

NOTE:

#Only MP3 player detects that there is upgrading

file in system when this player power on,
"Upgrade" menu will appear in "ADVANCED"
item.

#Make sure MP3 PLAYER has enough quantity

of electric charge before upgrading.

#To ensure successful firmware upgrading, do

not power off during the course of upgrading.

#Upgrading will last about 10 seconds or more,

please try your best not to operate any buttons
during this course.

#After firmware upgrading finishes, some

function or interface may probably be different
from user manual, so please take real object
as standard.

- 11 -

53mm 38.5mm 13.8mm about 25.5g(without battery),37.5g(with battery)

0 40

MPEG 1/2 Layer 3(16kbps 320kbps) WMA (8kbps 192kbps) WAV

- 12 -

Chapter Three Servicing and Principle

Section One Principle of the Player

3.1.1 Principle of the player

1. Mp3 main decode chip, which adopts professional MP3 decode chip PNX0101 of Philips

company, with integrated ARM and DSP core inside. Sound quality is good and power consumption is

low.

2. USB jack circuit: USB jack, data exchange.

3. Flash circuit: data storage of the player.

4. OLED circuit: display of working state of the player.

5. Output circuit: audio output.

6. MIC circuit: external audio input, record function finishes.

7. FM tuning circuit: professional FM tuning chip TEA5767HN of Philips company is adopted to

realize FM tuning.

3.1.2 Block diagram of the player

Block diagram of the player is shown in the figure 3.1.2.1:

12V DC-DC

BI-COLOR

OLED

FLASH

MEMORY

12MHz CRYSTAL

BUTTON ARRAY

MICROPHONE

PNX0101

DC BLOCK

ANTI-POP

INTERNAL

DC-DC

HEADPHONE

FM MODULE

3.3V FOR VDDIO

1.8V FOR VDDO

LPF

32.768KHz
CRYSTAL

LPF

USB INTERFACE

Figure 3.1.2.1 X17 RU block diagram

1.5V/1 AAA BATTERY

- 13 -

3.1.3 Function introduction to IC used by the player

PCB board Location IC model Function

U1 TC58512FT Flash Memory

U4 LM2703 Supply 12.2V voltage

U6 Philips PNX0101 MP3 decode

U7 PQ1X28 Supply 2.8V voltage

U9 G690L263T System reset

U10 SI912DL Headphone mute

Tuning

board

U1 TEA5767HN Tuning module

Main board

Function introduction to IC used by X17 (RU) is shown in the following table:

- 14 -

Section Two Unit Circuit Principle

3.2.1 FLASH circuit

1. FLASH circuit schematic diagram is shown in the figure 3.2.1.1:

FLASH3V3

TC58512FT

U1

1

R1

100K

/RE
/CE

CLE
ALE
/WE
/WP

NC

2

NC

3

NC

4

NC

5

NC

6

GND

7

RY/BY

8

RE

9

CE

10

C2

104

D_GND D_GND

R2
100K

FLASH3V3

11
12
13
14
15
16
17
18
19
20
21
22
23
24

NC
NC
Vcc
Vss
NC
NC
CLE
ALE
WE
WP
NC
NC
NC
NC
NC

NC
NC
NC

NC
I/O8
I/O7
I/O6
I/O5

NC

NC

NC

Vcc
Vss

NC

NC

NC
I/O4
I/O3
I/O2
I/O1

NC

NC

NC

NC

48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25

MPMC_AD7
MPMC_AD6
MPMC_AD5
MPMC_AD4

FLASH3V3

MPMC_AD3
MPMC_AD2
MPMC_AD1
MPMC_AD0

C1

104

D_GND

Figure 3.2.1.1 Flash circuit schematic diagram

2. Working principle: Flash Memory is the storage unit of the player, all Mp3 and waveform files

should be stored in FLASH. Flash module is composed of FLASH chip TC58512FT and peripheral circuit

to finish internal files’s working of read, write and delete. 1.5V battery voltage, through PNX0101 internal

boosted circuit, provides 3.3V voltage for working of FLASH. R1 is pull up resistor of /CE, R2 is the pull

down resistor of /WP, Vcc is power supply pin of FLASH, /CE is chip selection signal, high level is

effective, VCC33 provides 3.3V voltage and FLASH begins to work. /RE, /WE are read effective and

write effective signal end respectively to control read and write function of FLASH. I/O1 - I/O8 are 8 data

lines to complete the exchange of FLASH and external data to realize functions of write, delete and edit

of Mp3.

- 15 -

When Mp3 is powered on, 3.3V voltage supplies power for Flash through Vcc, /CE inputs 3.3V high

level signal and Flash begins to work effectively. When Mp3 laying music, /RE is high level, Flash

performs read operation. When writing files in through data line o recording through microphone, /WE is

high level, Flash performs write in operation. Working of read out and write in are performed through

I/O1 I/O8 8 data/address lines.

3.2.2 FM tuning circuit

1. FM tuning circuit diagram is shown in the figure 3.2.2.1;

SGND

SGND

SGND

C6 473

C7 473

R1

10R

FM_3V3

C5

475/X5R/0603

C3

472

SGND

SGND

FM_OUTL

C8 473

C9 333

SGND

U1

R2 18K1%

31
32
33
34
35
36
37
38
39
40

29

30

N.C

N.C

IFGAI

AGND
AVCC

RFI1

RFGND

RFI2

TCAGC

LOOPSW

N.C

N.C

CPOP2VCOT13VCOT24VCOVCC5DGND6DVCC7DATA8CLOCK9N.C

1

DIFL128DIFL2

FM_OUTR

C12 333

FM_OUTL

FM_OUTR

21

22

23

24

26

27

N.C

LAVO

MPXO25VREF

RAVO

TCIFC

TMUTE

NECTAR-I

TEA5767HN

N.C

20

PHLF

19

PDLF

18

XTAL2

17

XTAL1

16

SWP2

15

SWP1

14

BUSEN

13

BUSM

12

W/R

11

10

R6

33K

C14

102

C18

C17

223

C16

223

SGND SGND SGND

C15

22PF

102

D-GND D-GND

XT1

CRYSTAL

32.768KHz

FM_3V3

D-GND

IIC_SDA 2

IIC_SCL 2

C10

R3

SGND

C4

C2 27PF

101

FM_ANT

C1

FM_ANT3

47PF

L1

120nH/2%

FM_3V3

10K

R5

33nH2%

393

100K

D-GND

C19

103

C11

L3

33nH2%

C13

BB202

D2

FM_3V3

SGND

dandu

R7

22R

BB202

D1

L2

R4

22R

104/X5R/0402

104/X5R/0402

D-GND

Figure 3.2.2.1 FM tuning circuit diagram

- 16 -

2. Working principle: tuning circuit is composed of micro digital tuning IC TEA5767HN of Philips

company and peripheral circuit. Power supply voltage is supplied by PQ1X28 to provide pure voltage

with value 2.8V for IC. CN1 is socket between Fm module and main board. C1, C2, C3, C4, L1 are

antenna input matching circuit of FM module; diode D1, D2 and winding inductor are middle frequency

and selection frequency tuning circuit in FM module. Control means of FM adopts IIC bus control means,

9, 10 of TEA5767 are data line and control line.

When MP3 player switches to FM tuning state, pin 13 BUSEN of TEA5767HN receives high level

signal, bus control mode is gated, IC begins to work. As antenna, headphone receives FM signals from

nature, through antenna input matching circuit, input TEA5767HN, PNX0101 via RFI1 and RFI2 to

control TEA5767HN to perform intermediate frequency and selected frequency control through IIC_SCL

and IIC_SDA to transform FM signals to sound simulating signals and then is outputted by FM_OUTR

and FM_OUTL to ADC circuit of PNX0101 and then output through headphone after DAC processing.

3.2.3 OLED module circuit

1. OLED module circuit is shown in the figure 3.2.3.1:

CN3

CON20

GND

C55

LCD_3V3

R47
2M

D_GND

R17 0R*

R240R

VOLED1

C62

106/25V/1206

LCD_RESET 1

/RESET 1

C65
22P

R53
27K1%

D_GND

D4

MBR0520/SOD123

R49
240K1%

L23

0R

L22
601

C73
104

D_GND

1

SW

2

GND

3

FB

U4

TPS61040/LM2703

LCD_3V3VCC33

D_GND

L25

CDRH3D16-4R7

5

VIN

4

EN

R54

0R*

EN

1

C74
104

R68
1M*

1M
R55

VCC33

L14 601

C54

475/X5R/6.3V

1
2

BS2
BS1

IREF
VCOMH
VOLED

R43 4.7K
R44 4.7K

LCD_CS 1

LCD_D/C 1
LCD_WR 1
LCD_RD 1
LCD_DB0 1
LCD_DB1 1
LCD_DB2 1
LCD_DB3 1
LCD_DB4 1
LCD_DB5 1
LCD_DB6 1
LCD_DB7 1

103/25V

3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

Figure 3.2.3.1 OLED circuit schematic diagram

2. Working principle: 12V high voltage is required to lighten OLED and matching circuit must be

matched to finish. The circuit includes two parts: boosted circuit and OLED jack circuit, in which boosted

circuit is constituted by boosted DC-DC LM2703 and peripheral circuit, VIN is power input, EN is

Lm2703 enable end, high level is effective, SW is high voltage output pin, FB is feedback pin, voltage

- 17 -

Value VOLED outputted by high voltage is achieved through selecting two voltage partial resistor on two

ends of FB, and the following relation is met:

Seen from the above, VOLED is about 12.2V. L25, C62 in circuit are energy storage inductor and

output capacitor of boosted circuit.

3.3V voltage inputs LM2703 through Vin, EN receives the high level through current limit by R55 to

make LM2703 effective, 3.3V voltage is outputted by SW pin through LM2703 voltage rise, output to pin

20 of OLED through voltage stabilizing pipe D4 to provide lighting voltage for OLED. During the course

of working, FB feedback to LM2703 through detecting energy storage capacitor C65, output voltage may

be controlled through adjusting resistor R49 and R53.

OLED jack circuit is connected with OLED of PNX0101 directly, through data exchange of

LED_DB0 LED_DB7 and PNX0101, character display is controlled by internal program of PNX0101.

Pin 6 of OLED is reset signal and controlled by one MPMC jack of PNX0101. When power on, high

level outputs and OLED resets.

3.2.4 USB jack circuit

1. USB jack circuit is shown in the figure 3.2.4.1:

USB1

Shield
Shield

GND

D+

D-

VB+

3DU05S-32T-10

RCLAMP0504F/SC-706L

6
5
4
3
2
1

D2

3

C6 0R

5

R77

180K

R5 18R

13

24

T1

R7 18R

C69
104

SDCW2012-2-900T*

USB_DET 1USB-VBUS1

D_GND

Q1

SS8550LT

R3
1K

GND

4

162

L1 601 DCR<350m

C8
6pF*

USB-VBUS

C9
6pF*

D_GND

R59 100K

USB_DP 1

USB_DM1

D_GND

D_GND

Figure 3.2.4.1 USB jack circuit schematic diagram

- 18 -

2. Working principle: USB jack network is composed of VB+ (USB 5V power), D+ (positive data line),

D- (negative data line) and GND (ground line), in which PNP triode Q1 is used for inverse insert

protection to prevent damaging Mp3 internal circuit because of inverse insert; D2 is TVS diode array and

used for static-proof.

D with USB control module of PNX0101 directly. When Mp3 is connected with computer, VB+ high

level of computer USB jack inputs to USB_DET of PNX0101, USB jack is effective, USB jack connects

with PNX0101 through D+ (USB_DP) and D- (USB_DM), then connected with Flash by PNX to realize

information exchange of Flash internal data and computer internal data.

3.2.5 Buttons circuit

1. Buttons circuit is shown in the figure 3.2.5.1:

VCC33

A-B/REC

VCC33

R18

10R

S2

A-B/REC

1

104

R64

47K

D_GND

DFU

Q5
SS8550LT

1

R23
1KC71

PREVIOUS

1

VCC33

R19

10K

MENU

D_GND

PREVIOUS

C66
104

VOL-

1

VOL-

1

36

GND

R65 47K

D_GND

ME NU

2

5

C59
104

R20

47K

C60
104

D_GND

VOL+

1

4

NEXT

VCC33

R21
47K

VOL+ 1

C14

D_GND

VCC33

104

D_GND

R63 47K

C70
104

NEXT 1

VCC33

S3

Figure 3.2.5.1 Buttons circuit schematic diagram

2. Working principle: buttons of X17 (RU) include one 4-direction button, one HOLD switch and two

single buttons (one is OPEN/CLOSE and PLAY button, which will be introduced in power on/off circuit).

Button detect is to use partial voltage mode to utilize ADC circuit of PNX0101 to check preset button

voltage value to decide which button functions. When the relevant button is pressed, voltage value of

preset point corresponding to this button will have change, voltage inputs ADC circuit of PNX0101, then

the internal program makes the relevant response to realize function of each button. To lock button,

directly utilize one I/O port of PNX0101 to check high/low level; when high level is detected, it is locked

and other buttons have no function.

- 19 -

3.2.6 Headphone jack circuit

1. Headphone jack circuit is shown in the figure 3.2.6.1:

U10

OUT_R

OUT_L

4

5

162

GND

601 DCR<350m

601 DCR<350m

601 DCR<350m

D1

RCLAM P 05 04F/SC-706L

GND

L15

L16

1
3
4

2SJ-A382-001(HP-DC)

CN1

5

FM_ANT2

R12
0

3

L17

Figure 3.2.6.1 Headphone jack circuit schematic diagram

2. Working principle: left and right channels audio signals outputted from PNX0101 , through 220uF

capacitor coupling output, are sent to headphone jack circuit. Headphone jack circuit is composed of the

dual MOS tube SI1912DL and headphone socket CN1 that control sound output. Pin 2 and 5 of

SI1912DL are connected to mute circuit. When MUTE button is pressed, control dual MOS tube is

1

S1

2

G1

3

D2

Si1912D LSOT -363/NT4401

6

D1

5

G2

4

S2

PHONE_MUTE 1

R501KR51

1K

HP_VOUTL 1

HP_VOUTR 1

disconnected to cut the output of left and right channels of headphone. D1 in circuit is TVS diode array,

used to protect ESD to prevent external static from damaging internal circuit through headphone jack.

Ground wire of headphone is also used as antenna input of FM tuning.

3.2.7 Reset circuit

1. Reset circuit is to provide power0on reset level for PNX0101. Reset circuit is shown in the figure

3.2.7.1:

U9

VCC33

G690L263T71/R3111N252CT1

2

VCC

RESET

SFI0402-050E100NP

Figure 3.2.7.1 Reset circuit schematic diagram

GND

3

1

P_GND

C11

/RESET 2

D_GND

2. Working principle: reset circuit is composed of reset IC G690L263 (U2) and peripheral circuit. At

the moment of power of the player, level of pin 2 of G690L263 changes from 0V to 3.3V pin 1 outputs a

low level reset pulse signal with pulse width 140 millisecond and inputs to pin T14 of PNX0101 to reset

the player. After reset finishes, high level is maintained, C11 in circuit is voltage dependent resistor and

used for anti-static.

- 20 -

3.2.8 Power on/off control circuit

1. Power on/off control circuit of X17 (RU) is shown in the figure 3.2.8.1:

START1

SFI0402-050E100NP

C72

START

VCC33

BAT+

1

3

D3

MMBD4148CC
SO

2

R11
1K

PLAY/PAUSE

L24

10UH

S1

START/PLA Y/PAUSE

D_GND

T2

3

Figure 3.2.8.1 Power on control circuit schematic diagram

2. Working principle: power on/off is completed through operating ON/OFF button S1. When

pressing S1 to power on, S1 is connected, high voltage of STAET point is pulled down to ground, START

sends out low level signal, L17 of PNX0101 is connected to START signal DC-DC to begin to work and

provide 3.3V and 1.8V voltage, D17 pin of PNX0101 is connected to START signal at the same time and

system power on.

Power off of X17 (RU) is realized through software. During the course of working, press S1 for a

long time, PNC0101 detects START signal through D17, low level sends out this power-off signal to

make the player stop working; if low level is short time, it is PLAY or PAUSE.

3.2.9 Low voltage detecting circuit

X17 (RU) has no special low voltage detecting circuit. Battery voltage detecting is controlled

through PNX0101 internal software, M17 pin of PNX0101 is connected to anode of battery, internal

program sets the lowest voltage of power off, when M17 pin of PNX0101 detects that battery anode

voltage is lower than this value, power off signal sends out to realize system power off.

- 21 -

3.2.10 MIC circuit

1. MIC circuit is shown in the figure 3.2.10.1:

DAC_VDDA33

Q4

MMST3904

R62
100K

R45
470K

MICROPHONE

C58

MIC1

106

GND

R67

2.2K

C61

104

ADC_MIC

ADC_MIC 1

Figure 3.2.10.1 MIC circuit schematic diagram

2. Working principle: MIC circuit is composed of microphone and microphone power bias circuit.

MIC1 switches the external voice signals recorded to electric signals, through C61 coupling, and outputs

ADC circuit of PNX0101 to switch analog electric signals to digital signals to form WAV file through

software encoding to save in FLASH. R62, R45, Q4 and C56 in circuit is triode voltage stabilizing

system, which provides stable power bias for microphone, R67 is bias resistor of microphone.

- 22 -

Section Three Servicing Cases

3.3.1 Servicing cases

Example 1 Symptom: player not switched on

Description: after pressing ON button, screen has no display and headphone has no output.

Analysis and troubleshooting: firstly conform whether the trouble is player not switched on or power

supply not connected; connect with computer and check whether display of screen is normal; connect to

adapter, if display of charge can be displayed, it means that power and rear stage circuit work normally;

power on/off circuit is shown in the figure 3.3.1.1, power on/off circuit, through a light touch switch S1,

shuts and then forms loop to generate a Start signal to enter chip detect and then power on; firstly test

S2 switch, press CLOSE and check whether it is on and find that S2 is false welding when testing; after

welding again, trouble is removed.

START

SFI0402-050E100NP

Figure 3.3.1.1 ON/OFF circuit schematic diagram

C72

START

VCC33

BAT+

1

3

D3

MMBD4148CC

2

R11
1K

PLAY/PAUSE

L24

10UH

S1

START/PLA Y/PAUSE

D_GND

SOT23

- 23 -

Example 2 Symptom: only one side has sound output when tuning

Description: only one side of headphone has output when tuning

Analysis and troubleshooting: firstly judge whether tuning component have trouble or common [part

has trouble, whether only one side has output when listening and the result is that both sides are normal;

through a flat cable holder, the tuning components reach main board; for radio stations can be searched

when tuning, it means that power supply, data and clock are basically normal; directly use oscillograph

to test left and right channel output of FM and find that FM-OUTL has no waveform output, then check

output part of tuning board and waveform is normal, flat cable holder pin is shown in the figure 3.3.1.2,

use hand to press flat cable holder and it is OK, but it has trouble after loosing, so we judge that flat

cable holder contact is not good, after changing it, trouble is removed.

CN1

IIC_SDA
IIC_SCL

IIC-SDA
IIC-SCL

D_GND

CON2X4

FM_3V3

6 5
8 7

12
34

FM_ANT

FM-OUTL
FM-OUTR

FM_OUTL
FM_OUTR

Figure 3.3.1.2 Flat cable holder pin circuit diagram

Example 3 Symptom: noise appear when playing

Description: headphone output noise when playing

Analysis and troubleshooting: if there is noise when playing, it is BGA that has trouble, for playback

and other functions are all normal, only there is noise, so it is necessary to analyse whether decode [art

or rear stage causes this trouble, when playing 1KHZ standard signal, there should be sine wave signals

and not any noise, schematic diagram of DAV part of PNX0101 is shown in the figure 3.3.1.3, test

waveform in C32, C33 and find that there is noise, so we judge that it is BGA that has trouble; after

changing it, trouble is removed.

M3

DAC-VOUTR

M2

DAC-VOUTL

P3

HP-OUTR

N3

HP-OUTL

N2

HP-OUTCA

N1

HP-OUTCB

DAC

HP_VOUTR

HP_VOUTL

C31 220UF/4V

C32 220UF/4V

C40 104
C34 104

C27 332

C28 332

R29 10R
R30 10R

Figure 3.3.1.3 DAV part circuit diagram

Example 4 Symptom: no screen display

Description: when playing, screen has no display and playback is normal.

Analysis and troubleshooting: power on and playing music and sound is normal, so it is

preliminarily judged that power supply 3.3V and 1.8V are both basically normal. Screen display control

circuit is shown in the figure 3.3.1.4, firstly test voltage on two ends of L25 and it is about 4.3V, which is

- 24 -

Basically normal; then test voltage on two ends of D8 and find that anode has no 13V voltage, take down

display screen and there is still no; check input end voltage and enable voltage and they are basically

normal, then check FB end voltage of feedback pin and it is obviously low, check and find that capacitor

C68 has trouble, after changing it, trouble is removed.

GND

CN3

1
2

BS2
BS1

IREF
VCOMH
VOLED

R43 4.7K
R44 4.7K

3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

LCD_CS 1

LCD_D/C 1
LCD_WR 1
LCD_RD 1
LCD_DB0 1
LCD_DB1 1
LCD_DB2 1
LCD_DB3 1
LCD_DB4 1
LCD_DB5 1
LCD_DB6 1
LCD_DB7 1

LCD_3V3

R17 0R*

R240R

VOLED1

LCD_RESET 1

/RESET 1

D4

MBR0520/SOD123

L25

CDRH3D16-4R7

VCC33

L14 601

CON20

C55

103/25V

R47
2M

D_GND

C62

106/25V/1206

C65
22P

R53
27K¡À1%

D_GND

L23

0R

R49
240K¡À1%

1

SW

2

GND

3

FB

U4

TPS61040/LM2703

VIN

EN

R54

0R*

5

EN

1M
R55

R68
1M*

1

C54

475/X5R/6.3V

4

Figure 3.3.1.4 Screen display control circuit diagram

Example 5 Symptom: screen has mosaic

Description: display screen has mosaic and display has disorder

Analysis and troubleshooting: this troubleshooting is the same with that of no screen display, with

the difference is that power supply is normal; firstly confirm whether the screen itself has trouble or

circuit has trouble, change display screen and trouble still exists, then use oscillograph to test the 8-digit

number of OLED screen and find that flat cable holder of display screen has false welding, after welding

again, trouble is removed.

Example 6 Symptom: noise when recording

Description: there is noise when playing record files

Analysis and troubleshooting: schematic diagram of record circuit is shown in the figure, it is mainly

composed of microphone and microphone power bias circuit, MIC circuit schematic diagram is shown in

the figure 3.3.1.5. MIC switches the external voice signals recorded into electric signals, through being

coupled by C61, output to ADC circuit of PNX0101 and form WMA files through software coding to save

in Flash.

- 25 -

When repairing this kind of machine, firstly play files and check whether there is noise and there is

no; check recording circuit and power supply is normal; when recording, use oscillograph to test C61

and there is noise interference, after changing MIC, trouble is removed.

DAC_VDDA33

Figure 3.3.1.5 MIC circuit schematic diagram

Q4

MMST3904

R62
100K

R45
470K

MICROPHONE

C58

MIC1

106

GND

R67

2.2K

C61

104

ADC_MIC

ADC_MIC 1

Example 7 Symptom: only one side has sound output

Description: only one side of headphone has output when playing.

Analysis and troubleshooting: because only one side has normal sound output, it means that other

circuits are normal, secondary output DAC circuit is shown in the figure 3.3.1.6, firstly check whether

headphone terminal has false welding, test waveform on two ends of headphone terminal and find that

left channel has no waveform, then test capacitor C32 and there is still no wave, then test C28 and

reference level is obviously low comparing with right channel, test resistor to ground and it is only

dozens of ohm, take down BGA and test and find that resistance to ground is infinite, after changing

BGA, trouble is removed.

M3

DAC-VOUTR

M2

DAC-VOUTL

P3

HP-OUTR

N3

HP-OUTL

N2

HP-OUTCA

N1

HP-OUTCB

DAC

HP_VOUTR

HP_VOUTL

C31 220UF/4V

C32 220UF/4V

C40 104
C34 104

Figure 3.3.1.6 DAC circuit diagram

C27 332

C28 332

R29 10R
R30 10R

Example 8 Symptom: power not on

Description: no OSD, no output

Analysis and troubleshooting: firstly analyse whether it is caused by battery or by power circuit. If

power not on, firstly connect with computer and check whether screen has display. Power on, connect

and there is no display, so take machine apart and check it. Firstly check power battery voltage and it

- 26 -

Cannot be lower than 1.3V, then check VCC 3.3V and 1.8V outputted through BGA and find that 3.3V is

low, which is normal and 1.8V is normal; after pressing ON button and the player is working normally,

VCC 1.8V should be pulled down to about 1.4V, VCC3.3V should be lower to 3.1 3.2V when working

normally; then test crystal oscillator, oscillation is normal, frequency is 24MHZ and reset is also normal,

so we analyse that it is chip that is not working; working conditions are normal, so we analyse that it os

drive program that has problem; upgrade DFU again and trouble is removed.

Example 9 Symptom: computer cannot be connected

Description: after connecting with computer, no response and no screen display.

Analysis and troubleshooting: firstly check whether charge and power on is available and the result

is normal. Use diode level of multilevel to test the resistance value to ground of D+, D- data signals in

USB terminal position and it should be close to several hundred ohm, then test between D+ and D- and

short-circuit cannot be allowed; when testing, we find that resistance value of D+ is normal and that of

D- is infinite, check and find that USB terminal has false welding; after welding again, trouble is removed.

Example 10 Symptom: no sound when playing

Description: headphone has no output when playing

Analysis and troubleshooting: firstly adjust volume to maximum and play1KHZ standard signals,

2.8V power switch circuit is shown in the figure 3.3.1.7, check whether two ends of output end C31, C32

have waveform and there is no, then test resistance to ground of reference level end C27, C28 and it is

normal, then test audio power supply IC U7 and pin 1 of input end is 3.3V, which is normal, when testing

Pin 5 of output end and voltage is 0.6V, which should be 2.8V when in normal conditions, so it is on low

side obviously, after changing IC, trouble is removed.

VCC33

-5

C46
106/X5RC42

C36
106/X5R

LD2982/LP2985/S1167/PQ1X281M2ZP/TPS793285SOT23

P_GND

Figure 3.3.1.7 2.8V power switch circuit schematic diagram

1

VI

2

GND
EN3BYPASS

U7

VOUT

5

4

104

D_GND D_GND

- 27 -

3.3.2 Troubleshooting flow chart

1.Troubleshooting process for “No screen display”.

No screen display

Check

whether D8 anode

12V voltage is

normal

Y

Check

whether 12V

voltage is on display

screen socket

Y

Change

display screen

components and check

whether they are

ok

Y

Display screen has trouble

N

Check DC-DC boosted
circuit and surrounding
elements

N

Flat cable holder of display
screen is false welding

N

Flat cable holder of display
screen has trouble

Figure 3.3.2.1 Trouble shooting flow chart for “No screen display”

- 28 -

2.Troubleshooting process for USB not connected”.

USB not connected

Check

whether L1 5V

grounding is

normal

Y

Check

whether 3.3V, 1.8V

are normal

Y

Check

whether 12M

crystal oscillator’s

oscillation is

normal

Y

Check

resistance to

ground of D+, D- (red

means grounding,

use diode level to

test )

Y

Change BGA

N

Q8 has trouble or USB
socket has false welding

N

Check each DC-DC switch
circuit and peripheral elements

N

Change crystal oscillator
or capacitors on two sides

N

Check T1 or change BGA

Figure 3.3.2.2 Troubleshooting plow chart for “USB not connected”

- 29 -

3.Troubleshooting process for “Buttons have no function”.

Buttons have no function

Confirm

whether all buttons

have no
function

Y

Confirm

whether lock button has

action

Y

HOLD and 3.3V

are short-circuited

Y

Change HOLD button

N

Change a certain button

N

Change BGA

N

Change BGA

Figure 3.3.2.3 Troubleshooting flow chart for “Buttons have no function”

- 30 -

4 Troubleshooting process for “No tuning function”

No tuning function

Whether

it ca switch to tuning

mode

Y

Whether

it can switch to auto

search

Y

Whether

there is click sound

Y

Check antenna high
frequency input loop

N

Check power supply
oscillation, data I C circuit

N

Check SCL, SDA signal

N

Check

whether BGA has tuning

signal

BGA has trouble

2

Y

Figure 3.3.2.4 Troubleshooting flow chart for “No tuning function”

- 31 -

5.Troubleshooting process for "Power not on"

Power not on

whether 3.3V,

1.8V output is

N

software upgrading

again is normal

Program lost

Check

normal

Y

Whether

Y

N

whether BGA working

condition, power supply, clock

Connect

to computer and check

whether there is

screen
display

Y

Whether

battery voltage is lower

than 1.3V

Y

Change battery

Check

and reset circuit

are normal

Y

Change BGA

N

Change BGA

N

Check L18, L28, R24 and
surrounding voltage

N

Check each branch circuit

Figure 3.3.2.5 Troubleshooting flow chart for “Power not on”

- 32 -

Section Four Servicing Parameters

This section collects signal waveform diagram of audio, video and each unit circuit with the purpose

to help servicing personnel to judge where trouble lies in accurately and quickly to improve servicing

skills. For the difference of oscillograph's type, model and tuner, a certain difference may exist, so the

servicing personnel are expected to pay more attention to check in daily operation.

1. 12M crystal oscillator oscillation waveform diagram

2. L25 boosted energy storage waveform diagram

- 33 -

3. LCD_3V3 waveform diagram

4. Software power supply 3V3 waveform diagram

5. LCD_RESET waveform diagram

- 34 -

6. LCD_CS waveform diagram

7. LCD_WR waveform diagram

8. LCD_D/C waveform diagram

- 35 -

9. LCD_DB0 waveform diagram

10. LCD_RD waveform diagram

11. LCD_DB2 waveform diagram

- 36 -

12. LCD_DB1 waveform diagram

13. LCD_DB4 waveform diagram

14. LCD_DB3 waveform diagram

- 37 -

15. LCD_DB6 waveform diagram

16. LCD_DB5 waveform diagram

17. IREF waveform diagram

- 38 -

18. LCD_DB7 waveform diagram

19. VOLED waveform diagram

20. VCOMH waveform diagram

- 39 -

Section Five Function Introduction to IC

3.5.1 Function introduction to PNX0101

The PNX0101 (ARM -based Solid State Audio IC) is an IC based on an embedded RISC processor. The
device is designed for hand-held Solid State Audio applications like portable MP3 players. The high level of
integration, low power consumption and high processor performances make the PNX0101 very suitable for
portable hand -held devices.

The PNX0101 is based on the powerful ARM7TDMI CPU core, which is a full 32-bit RISC processor with
8 k byte dedicated cache.

2. Pin function of PNX0101 is shown as the following table:

PIN Main Description

T10 XTALH_IN 12M clock in

V9 XTALH_OUT 12M clock out

U9 XTALH_VDDA18 Crystal oscillator analog power supply

T9 XTALH_VSSA Crystal oscillator analog ground

V7 XTALH_IN Digital ground

T8 XTALH_OUT unused

U8 XTALH_VDDA18 Crystal oscillator analog power supply

V9 XTALH_GNDA Crystal oscillator analog ground

T12 SPDIF_IN unused

U11 SPDIF_VDDA18 Grounding

T11 SPDIF_GNDA Grounding

U5 ADC10B_GPA4 unused

T6 ADC10B_GPA3 unused

U6 ADC10B_GPA2 unused

T7 ADC10B_GPA1 unused

- 40 -

U7 ADC10B_GPA0

Analog general pin (battery＋)

V10 ADC10B_VDDA33 10bitADC power supply

U10 ADC10B_GNDA 10bitADC grounding

M3 DAC_VOUTR AC grounding

M2 DAC_VOUTL AC grounding

L1 DAC_VDDA33 DAC analog power supply

L2 DAC_VREFP 　

M1 DAC_VREFN Grounding

P3 HP_OUTR Headphone output (right)

N3 HP_OUTL Headphone output (left)

N2 HP_OUTCA Connect to N1

N1 HP_OUTCB Connect to N2

R1 HP_VDDA33A Headphone analog power supply

R2 HP_VDDA33B Headphone analog power supply

P2 HP_GNDAA Headphone analog ground

P1 HP_GNDAB Headphone analog ground

T3 ADC_VCOM AC grounding

U2 ADC_VREFP Positive reference voltage

V1 ADC_VREFN Grounding

V3 ADC_VDDA18 Analog 1.8V power supply

U3 ADC_VDDA33 Analog 3.3V power supply

V2 ADC_GNDA Grounding

U1 ADC_VREF AC grounding

T1 ADC_VINR

T4 ADC_VINL

R3 ADC_MIC

Analog input (right) － tuning right

Analog input (left) － tuning left

Analog input—MIC input

T2 ADC_MIC_LNA 　

G2 LCD_RW_WR LCD read/write gating

F2 LCD_E_RD 　

E3,E2,D3,D1,

LCD_DB_7～0

LCD data line

D2,C3,C1,C2

B3 LCD_CSB Chip selection

- 41 -

F3 LCD_RS Data/direction gating

J3 MCI_DAT_3 Card read gating

J1 MCI_DAT_2 　

J2 MCI_DAT_1 unused

H3 MCI_DAT_0 Power off level

G3 MCI_CLK Card read chip selection clock

H2 MCI_CMD unused

T15 USB_CONNECT_N USB2.0 soft output

U17 USB_DP USB data line

T17 USB_DM USB data line

U14 USB_VBUS USB power supply

P16 USB_RREF unused

R17 USB_GNDA Analog ground

R16 USB_VSSA_REF Analog ground

T16 USB_VSSA_TERM Analog ground

U15 USB_VDDA18_PLL unused

U16 USB_VDDA18_BG unused

U18 USB_VDDA33 unused

V18 USB_VDDA33_DRV unused

H17 DAI_BCK unused

G17 DAI_WS unused

G16 DAI_DATA unused

F16 DAO_CLK unused

G18 DAO_BCK unused

F18 FAO_WS unused

F17 DAO_DATA unused

T13 JTAG_TRST_N J1

V4 JTAG_TCK J2

U12 JTAG_TMS 3.3V

T5 JTAG_TDI J3

U13 JTAG_TDO J4

U4 JTAG_SEL_ARM J5

- 42 -

H16 IIC_SCL Serial clock IIC control

J17 IIC_SDA Serial data IIC control

B8,C8,B7,C7
B6,C6,C5,C4

MPMC_D_15~ 0

MPMC data input/output (use 7～0 as address line)

B5,A5,B4,A4
A3,B2,A2,A1

C13,B13,A3,C14
B14,A14,C15,B15
C16,B16,C17,B17

MPMC_A_20~ 0 MPMC address line

C18,B18,A18,D18
D17,D16,E18,E17

E16

B11 MPMC_STCS_2 unused

A8 MPMC_STCS_1 unused

C9 MPMC_STCS_0 unused

B9 MPMC_DYCS unused

A10 MPMC_CLKOUT unused

B10 MPMC_CKE unused

C11 MPMC_WE unused

A9 MPMC_RAS unused

C10 MPMC_CAS unused

A11 MPMC_DQM_1 unused

C12 MPMC_DQM_0 unused

A17 MPMC_NOE Read gating

B12 MPMC_BLOUT_1 unused

A12 MPMC_BLOUT_0 Write gating

B1 MPMC_RPOUT unused

L3 UART_TXD unused

K3 UART_RXD unused

K2 UART_NCTS unused

K1 UART_NRTS unused

J16 GPIO_3 DFO

K18 GPIO_2 G2

- 43 -

K17 GPIO_1 G2

K16 GPIO_0 P_GND

T14 RSTIN_N System reset

V15 FLASH_VDD_HV 　

H1 VDDI1 Merm core power supply

V11 VDDI2 Core power supply

V16 VDDI3 Flash core power supply

G1 VSSI1 Merm core grounding

V12 VSSI2 Core grounding

V17 VSSI3 Flash core

E1 VDDE1 3.3V power supply

V5 VDDE2 3.3V power supply

V14 VDDE3 3.3V power supply

J18 VDDE4 3.3V power supply

A16 VDDE5

A7 VDDE6

1.8V～3.3V power supply

1.8V～3.3V power supply

F1 VSSE1 Grounding

V6 VSSE2 Grounding

V13 VSSE3 Grounding

H18 VSSE4 Grounding

A15 VSSE5 Grounding

A6 VSSE6 Grounding

L17 DCDC_PLAY Power on signal

L18 DCDC_STOP P_GND

N17 DCDC_LX2 DC-DC input

P17 DCDC_LX1 DC-D input

T18 DCDC_VUSB USB voltage input

M17 DCDC_VBAT Battery power supply

R18 DCDC_VOUT33A DC/DC 3.3V output

M16 DCDC_VOUT33B DC/DC 3.3V input

N18 DCDC_VOUT18 DC/DC 1.8V output

P18 DCDC_VSS1 DC/DC grounding

- 44 -

N16 DCDC_VSS2 DC/DC grounding

L16 DCDC_GND Core grounding

M18 DCDC_CLEAN Reference circuit grounding

3.5.2 Function introduction to G60L263T

1. The G690 are microprocessor supervisory circuits used to monitor the power supplies in and digital
systems. They provide excellent circuit reliability and low cost by eliminating external components and
adjustments when used with +5V, +3.3V, +3.0V- powered circuits.

These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage
declines below a preset threshold, keeping it asserted for at least 140ms after VCC has risen above the reset
threshold. Reset thresholds suitable for operation with a variety of supply voltages are available.

2. Pin function is shown as the following figure:

Pin Contiguous signal name Function description

1 /RESET Output reset low level

2 VCC IC power supply

3 GND Grounding

3.5.3 Function introduction to TC58512FT

1. Offered in 512M×8bit, the K9K4G08U0M is 4G bit with spare 128M bit capacity. Its NAND cell
provides the most cost-effective solution for the solid state mass storage market. A program operation
can be performed in typical 200µs on the 2112-byte page and an erase operation can be performed in
typical 2ms on a 128K -byte block. Data in the data page can be read out at 30ns cycle time per byte. The
I/O pins serve as the ports for address and data input/output as well as command input. The on -chip
write controller automates all program and erase functions including pulse repetition, where required,
and internal verification and margining of date Even the write-intensive systems can take advantage of
the K9K4G08U0M′s extended reliability of 100K program/erase cycles by providing ECC(Error
Correcting Code) with real time mapping-out algorithm. The K9K4G08U0M is an optimum solution for
large nonvolatile storage applications such as solid state file storage and other portable applications
requiring non-volatility. An ultra high density solution having two 4Gb stacked with two chip selects is
also available in standard TSOPI package.

- 45 -

2. Pin function is shown as the following figure:

Pin Name Function

29~32,41~44 I/O0~I/O7 Data input/output line

16 CLE Order lock latched gating

17 ALE Address lock latched gating

9 /CE Chip selection

8 /RE Read gating

18 /WE Write gating

19 /WP Write protection

7 RY/BY Busy/free judge

12、37

13、36

1~7,10,11,20~28,33~35,38~40,45~48 NC Unused

VCC Power supply

VSS Grounding

3.5.4 Function introduction to SI1912DL

SI1912DL integrates 2 MOS pipes inside, which is used to control the on/off of 2-channel circuit and

used as control IC of secondary output of 在 X17 (RU) and the pin function is shown in the table:

Pin Name Function

1 S1 S electrode of MOS tube
2 D1 D electrode of MOS tube 1
3 G2 G electrode of MOS tube 2
4 S2 S electrode of MOS tube 2
5 G2 G electrode of MOS tube 2
6 D1 D electrode of MOS tube 1

3.5.5 Function introduction to LM2703

1. The LM2703 is a micro -power step-up DC/DC in a small 5-lead SOT-23 package. A current limited,
fixed off-time control scheme conserves operating current resulting in high efficiency over a wide range of
load conditions. The 21V switch allows for output voltages as high as 20V. The low 400ns off -time permits the
use of tiny, low profile inductors and capacitors to minimize footprint and cost in space-conscious portable
applications. The LM2703 is ideal for LCD panels requiring low current and high efficiency as well as white

- 46 -

LED applications for cellular phone back-lighting. The LM2703 can drive up to 4 white LEDs from a single
Li-Ion battery.

2. Pin function is shown as the following figure:

Pin Name Data direction

1 SW Voltage output end
2 GND Grounding
3 FB Output feedback
4 EN Enable end

5 VIN Voltage input

3.5.6 Function introduction to TEA5767HN

1. The TEA5767HN is a single-chip electronically tuned FM stereo radio for low -voltage application with
fully integrated IF selectivity and demodulation. The radio is completely adjustment -free and only requires a
minimum of small and low cost external components. The radio can be tuned to the European, US and
Japanese FM bands.

2. Pin function is shown as the following figure:

Pin Name Data direction

1 NC unused

2 CPOP

3 VCOT1 Tuning output voltage oscillator 1

4 VCOT2 Tuning output voltage oscillator 2

5 VCOVCC Tuning output voltage oscillator power supply

6 DGND Digital ground

7 DVCC Digital power supply

8 DATA Data pin (IIC serial data control)

9 CLOCK Clock pin (IIC serial clock control)

10 NC unused

11 W/R Read/write control

12 BUSM Bus mode input

13 BUSEN Bus mode gating

14 SWP1 Software program port 1

- 47 -

15 SWP2 Software program port 2

16 XTAL1 Crystal input 1

17 XTAL2 Crystal input 2

18 PDLE 　

19 PHLE 　

20 NC unused

21 NC unused

22 LAVO Left channel audio voltage output

23 RAVO Right channel audio voltage output

24 TMUTE Software mute time constant

25 MPXO FM tuner MPX signal output

26 VREF Reference voltage

27 TCIFC IF adjust time constant

28 DIFL1 Decoupling IF clamper 1

29 DIFL2 Decoupling IF clamper 2

30 NC unused

31 NC unused

32 IFGAI IF gain control

33 AGND Analog ground

34 AVCC Analog power supply

35 RFI1 F input 1

36 RFGND RF ground

37 RFI2 RF input 2

38 TCAGC RF auto gain control time constant

39 LOOPSW Lock latched loop filter output gating

40 NC unused

3.5.7 Function introduction to PQ1X28

PQ1X281 may output fixed voltage 2.8V, EN pin is the enable end. The feature of 2.8V voltage
outputted by this IC is that ripple is very small and voltage is very pure, which are used to supply power
for audio system, FM and microphone. pin function is shown in the following table:

- 48 -

Pin Contiguous signal name Function description

1 VIN DC power input

2 GND Grounding

3 EN Enable end

4 BYPASS Form filtering circuit with external resistor

5 VOUT Voltage output

- 49 -

Chapter Four

Assembly and Disassembly Process

In order to get to know the structure of X17 (RU) more easily and directly, now we use pictures to present
each key point of disassembly and assembly process before all users to prevent users from operating blindly
and to damage elements, so we hope you can operate according to the instructions strictly.

Note: all operations must be with strict anti -static measures. Operators must wear anti-static gloves or
wrist ring; electric screwdriver must be grounde d effectively and articles, such as nippers must be removed
static before using!

4.1 Disassembly process of the player

1. Use nails to take down front casing mirror from the gap of glass and front casing (arrow position in the

following figure).

2. Take down the 4-direction button from the front casing.

- 50 -

3. Use electric screwdriver or “+”-shaped screwdriver to take down 4 screws (A, B, C, D) from the front

casing.

4. Take down bottom casing mirror (method is the same with that of taking down front casing mirror)

5. Use electric screwdriver or “+”-shaped screwdriver to take down 4 screws (A, B, C, D) from the bottom

casing.

- 51 -

6. Use nippers or screwdriver to take down two welding points of A and B and then remove the front

casing.

7. Use electric screwdriver or “+”-shaped screwdriver to take down 2 screws of main board (A, B).

8. Exert strength from the end of USB jack (arrow direction) to take down the main board.

- 52 -

4.2 Assembly process of the player

1. Install the LOCK button into the middle casing.

2. Install the main board and pay attention to install one end of headphone jack firstly and aim the button

(A) of main board at the button cap hole of front casing.

3. Use electric screwdriver or “+”-shaped screwdriver to tightly fix 2 screws (A, B) of main board.

- 53 -

4. Install front casing and use brand iron to weld A and B point.

5. Use electric screwdriver or “+”-shaped screwdriver to tightly fix 4 screws (A, B, C, D) of front casing.

6. Install LOCK button.

- 54 -

7. Install front casing mirror.

8. Install bottom casing and use electric screwdriver or manual screwdriver to tightly fix 4 screws (A, B, C, D) of bottom casing.

9. Install bottom casing mirror.

- 55 -

Chapter Cinque

PCB board & Circuit diagram

Section One PCB board

X21 Surface layer of PCB Board

- 56 -

X21 Bottom layer of PCB Board

- 57 -

FM_OUTL
FM_OUTR

L20 601/1005
L19 601/1005

- 58 -

VCC33

P_GND

P_GND

HP_VOUTR2
HP_VOUTL2

C33 105/0603
C35 105/0603

R35 R3、 2 IC!靠近

USB_DP2
USB_DM2
USB_DET2

IIC_SCL2
IIC_SDA2

U9
G690L263T71/R3111N252CT1

2

VCC

D_GND

C31 220UF/4V
C32 220UF/4V

R35
1M

VCC33

Q2
MMST3906

R36

R37

1M*

1.5K±1%

3

GND

1

RESET

SFI0402-050E100NP

D_GND

A_GND

X1

C22
22PF

12MHz

C40 104
C34 104

R32
1M

R33 10K

R60 601/1005

R61 601/1005

P_GND

C11

D_GND

D_GND

10K

FM_3V3

R56

C23
22PF

BAT+

R29 10R
R30 10R

ADC_MIC2

LCD_WR2
LCD_RD2
LCD_DB72
LCD_DB62
LCD_DB52
LCD_DB42
LCD_DB32
LCD_DB22
LCD_DB12
LCD_DB02
LCD_CS2
LCD_D/C2

VCC33

R39
100K

R58

10K

/RESET 2

VCC33

D_GND

R27 1 00K*

C27 332

A1

EN2

/RESET2

R13 0R

68uF

C28 332

J1
J2

J3
J4
J5

/WP
R/B0

/CE

VCC18

+

D_GND

+

D_GND

C10
220uF

C4

T10

T12

T15
U17
T17
U14
P16

H17
G17
G16

F16
G18
F18
F17

T13
U12
U13

H16

T14

V9
V7

T8

U5
T6
U6
T7
U7

M3
M2

P3
N3
N2
N1

T1
T4
R3

G2
F2
E3
E2
D3
D1
D2
C3
C1
C2
B3
F3

J3
J1

J2
H3
G3
H2

V4
T5
U4

J17

VCC18

C5
104

VCC33

C3
104

U6
PNX0101

XTALH-IN
XTALH-OUT

XTALL-IN
XTALL-OUT

SPDIF-IN
ADC10B-GPA4

ADC10B-GPA3
ADC10B-GPA2
ADC10B-GPA1
ADC10B-GPA0

DAC-VOUTR
DAC-VOUTL

HP-OUTR
HP-OUTL
HP-OUTCA
HP-OUTCB

ADC-VNR
ADC-VINL
ADC-MIC

LCD-RW-WR
LCD-E-RD
LCD-DB7
LCD-DB6
LCD-DB5
LCD-DB4
LCD-DB3
LCD-DB2
LCD-DB1
LCD-DB0
LCD-CSB
LCD-RS

MCI-DAT3
MCI-DAT2
MCI-DAT1
MCI-DAT0
MCI-CLK
MCI-CMD

USB-CONNECT
USB-DP
USB-DM
USB-VUSB
USB-RREF

DAI-BCK
DAI-WS
DAI-DATA

DAO-CLK
DAO-BCK
DAO-WS
DAO-DATA

JTAG-TRST
JTAG-TCK
JTAG-TMS
JTAG-TDI
JTAG-TDO
JTAG-SEL-ARM

IIC-SCL
IIC-SDA

RSTIN

R18

M16

DCDC-VOUT33A

DCDC_VSS1

DCDC_VSS2

L16

P18

N16

R22
0R

N18

V11

VDDI1H1VDDI2

DCDC-VOUTT18

DCDC-VOUT33B

OSCIALLATORS

SPDIF

10-BIT ADC

DAC

ADC

LCD INTERFACE

MEMORY CARD
INTERFACE

USB INTERFACE

DA INTERFACE

JTAG

IIC MASTER
INTERFACE

RESET

DCDC_GND

DCDC_CLEAN

VSSI1G1VSSI2

V12

M18

D_GND

VDDI

V15

V16

VDDI3

FLASH-VDD-HV

VSSI3

V17

VDD_I/O

VDDE1E1VDDE2V5VDDE3

VSSE1F1VSSE2V6VSSE3

V13

V14

J18

VDDE4

R109 1

VSSE4

A15

H18

VDD_MPMC

A16

VSSE5

A6

VDDE5

VSSE6

V18

U15

U18

U16

A7

VDDE6

USB-VDDDA33

USB-VDD18-BG

USB-VDDA18-PLL

USB-VDDA33-DRV

AUDIO PLAYER
SYMPHONY

R109 1

R109 1

XTAL_VSSAT9STAL_GNDAV8SPDIF_GNDA

ADC10B_GNDA

T11

U10

ADC_VDDA33

ADC_VREFP

ADC_VDDA18

V3

U2

ADC-VREFP

ADC-VDDA33U3ADC-VDDA18

USB_VSSA_REF

HP_GNDAAP2HP_GNDAB

P1

T16

R16

DAC_VDDA33

HP_VDDA33

L1

R2

HP-VDDA33AR1HP-VDDA33B

DAC-VDDDA33

MPMC

R109 1

UART

GPIO

DC/DC

USB_GNDA

USB_VSSA_TERM

DAC_VREFN

M1

R17

XTAL_VDDA18

DAC_VREFP

V10

U8

U9

U11

L2

DAC-VREFP

SPDIF-VDDA33

XTALL-VDDA18

XTALH-VDDA18

MPMC-D15
MPMC-D14
MPMC-D13
MPMC-D12
MPMC-D11
MPMC-D10

MPMC-A20
MPMC-A19
MPMC-A18
MPMC-A17
MPMC-A16
MPMC-A15
MPMC-A14
MPMC-A13
MPMC-A12
MPMC-A11
MPMC-A10

MPMC-STCS2
MPMC-STCS1
MPMC-STCS0

MPMC-DYCS

MPMC-CLKOUT

MPMC-CKE

MPMC-WE
MPMC-RAS
MPMC-CAS

MPMC-DQM1
MPMC-DQM0

MPMC_NOE
MPMC-BLOUT1
MPMC-BLOUT0

MPMC-RPOUT

UART-TXD
UART-RXD
UART-CTS
UART-RTS

DCDC-PLAY

DCDC-STOP

DCDC-VBAT

DCDC-LX2
DCDC-LX1

DCDC-VUSB

ADC_GNDAV2ADC_VREF

ADC_VREFN

ADC_VCOMT3ADC_MIC_LNA

T2

V1

U1

C49
106

ADC10B_VDDA33

ADC-10B-VDDA33

MPMC-D9
MPMC-D8
MPMC-D7
MPMC-D6
MPMC-D5
MPMC-D4
MPMC-D3
MPMC-D2
MPMC-D1
MPMC-D0

MPMC-A9
MPMC-A8
MPMC-A7
MPMC-A6
MPMC-A5
MPMC-A4
MPMC-A3
MPMC-A2
MPMC-A1
MPMC-A0

GPIO3
GPIO2
GPIO1
GPIO0

C50

C51

104

106

B8
C8
B7
C7
B6
C6
C5
C4
B5
A5
B4
A4
A3
B2
A2
A1

C13
B13
A13
C14
B14
A14
C15
B15
C16
B16
C17
B17
C18
B18
A18
D18
D17
D16
E18
E17
E16

B11
A8
C9
B9
A10
B10
C11
A9
C10
A11
C12
A17
B12
A12
B1

L3
K3
K2
K1

J16
K18
K17
K16

L17
L18
M17
N17
P17
T18

USB-VBUS

START1

SFI0402-050E100NP

MPMC_AD7
MPMC_AD6
MPMC_AD5
MPMC_AD4
MPMC_AD3
MPMC_AD2
MPMC_AD1
MPMC_AD0

R2 4. 7K

R4 4. 7K
R6 4. 7K
R8 4. 7K
R9 4. 7K

R10 100K
R28 100K

/RE
/WE

G2
G1

L18 CDRH3D16-33R

L26 CDRH3D16-33R

2

C52
104

C72

ALE
CLE

SFI0402-050E100NP

R14 0R

C53
102

VCC33

START

HOLD_SW 2

A-B/REC 2

A2

PHONE_MUTE 2

LCD_RESET 2

NEXT 2
VOL- 2
VOL+ 2
MENU 2
PREVIOUS 2
START 1

DFU 2

C12

R40 100K

SFI0402-050E100NP

C7

3

D_GND

P_GND

START 1

P_GND

BAT+

1

D3

MMBD4148CC SOT23

2

R11
1K

PLAY/PAUSE

L24
10UH

S1

START/PLAY/PAUSE

VDDBAT

+

C1
106

C2
220uF

R34 0R
Q3

SI2305BDS*

VCC18

VCC33

VCC18

C24
106

D_GND D_GND

VCC33

LD2982/LP2985/S1167/PQ1X281M2ZP/TPS793285 SOT23-5

1

106/X5R

C63
104

正反面各一个

P_GND

SFI0402-050E100NP*

2

BAT+

BAT+

C64

BAT-

P_GND

L2 601

L3 601
L4 601

C19

C18

106

106

D_GND D_GND D_GND D_GND

L5 601*
L11 601

L6 601
L12 601

C25

C29

106

106

D_GND D_GND

D_GND

5

VI

VOUT

GND

4

EN3BYPASS

U7

D_GND

C46

C42

106/X5R

104

D_GND

DAC_V33

VCC33

C26
104

C20
104

D_GND

R31 10R
L7 601

L8 18R

L9 601C36
L10 10R

L13 10 UH

C37
104

FLASH3V3

VDDI

ADC_VDDA18
XTAL_VDDA18

C21
104

VDD_MPMC
VDD_I/O

C38
104

删除

L16 C38

、

C30
104

C43
106

分别靠近IC各电源供应！

CON18AP FLASH

/CE
CLE
ALE

D_GND D_GND

/RE
/WP
/WE

D_GND

C48
104

D_GND

ADC10B_VDDA33

ADC_VREFP
ADC_VDDA33

C41
104

DAC_VREFP

HP_VDDA33
DAC_VDDA33

C44

C45

104

104

CN4

1718

MPMC_AD7

1516

MPMC_AD6

1314

MPMC_AD5

1112

MPMC_AD4

910

MPMC_AD3

78

MPMC_AD2

56

MPMC_AD1

34

MPMC_AD0

12

Section Two circuit diagram

2SJ-A382-001(HP-DC)

CN1

FM_ANT2

U10

OUT_L

OUT_R

1
3
4
5

4

5

D1

RCLAMP0504F/SC-70 6L

162

3

R12

GND

0

601 DCR<350mΩ

L17

GND

L15 601 DCR<350mΩ

L16 601 DCR<350mΩ

1

S1

2

G1

3

D2

Si1912DL SOT-363/NT4401

6

D1

5

G2

4

S2

PHONE_MUTE 1

R50
1K

HP_VOUTL 1

HP_VOUTR 1

R51
1K

SW1
SK??

VCC33

Ä ?.3mm

谝

1 3

D_GND

HOLD

2

R16

47K

C17
104

HOLD_SW 1

DAC_VDDA33

L21 10UH/ 2012

C56
106

D_GND

FM_3V3

C57
104

USB1

3DU05S-32T-10

Shield
Shield

GND

VB+

6
5
4
3

D+

2

D-

1

- 59 -

D2

R17 0R*

R240R

C62

106/25V/1206

CN3

CON20

RCLAMP0504F/SC-70 6L

GND

LCD_CS 1

LCD_D/C 1
LCD_WR 1
LCD_RD 1
LCD_DB0 1
LCD_DB1 1
LCD_DB2 1
LCD_DB3 1
LCD_DB4 1
LCD_DB5 1
LCD_DB6 1
LCD_DB7 1

C55

103/25V

LCD_3V3

D_GND

R47
2M

1
2

BS2

R43 4.7K

3

BS1

R44 4.7K

4
5
6
7
8
9
10
11
12
13
14
15
16
17

IREF

18

VCOMH

19

VOLED

20

VOLED1

C6 0R

4

5

162

3

D_GND

LCD_RESET 1

/RESET 1

C65
22P

Q1

GND

MBR0520/SOD123

R49
240K±1%

R53
27K±1%

L23

0R

D_GND

L1 601 DCR<350mΩ

SS8550LT

R3
1K

R109 1

D4

R109 1

R109 1

VCC33

L22
601

C73
104

D_GND D_GND

1

SW

2

GND

3

FB

U4

TPS61040/LM2703

USB-VBUS

R109 1

LCD_3V3

L25

CDRH3D16-4R7

5

VIN

4

EN

R54

0R*

EN

1

C8

6pF*

R59 100K

C74
104

1M
R55

R68
1M*

D_GND

C9
6pF*

R77

180K

C54

475/X5R/6.3V

R5 18R

13

24

R7 18R

C69
104

D_GND

VCC33

L14 601

T1

SDCW2012-2-900T*

USB_DET 1USB-VBUS1

A-B/REC

USB_DP 1

USB_DM 1

DAC_VDDA33

1

C71

104 R63 47K

R64

47K

D_GND

DFU

R62
100K

R45
470K

MICROPHONE

VCC33

R18

10R

S2

A-B/REC

Q5
SS8550LT

1

Q4

MMST3904

C58

MIC1

CN2

FM_3V3

ADC_MIC

R19

D_GND

MENU

C66
104

IIC-SDA
IIC-SCL

ADC_MIC 1

1

PREVIOUS

VOL-

1

D_GND

36

VOL-

D_GND

IIC_SDA
IIC_SCL

R67

2.2K

106

C61

104

GND

VCC33

10K

R23
1K

PREVIOUS

1

CON2X4

6 5
8 7

´?35FM

瞬遄　怯 机 板对应的

VCC33

R20

47K

VCC33

C60
104

D_GND

VOL+

MENU

1

2

S3

D_GND

5

4

NEXT

GND

R65 47K

C59
104

VCC33

R21
47K

C14
104

FM_ANT

12
34

D_GND

FM-OUTL
FM-OUTR

VOL+ 1

C70
104

NEXT 1

FM_OUTL
FM_OUTR

VCC33

D_GND

Chapter six BOM List

MATERIAL

CODE

MAIN BOARD 5448802

0090324 SMD RESISTOR 1/16W 0O±5% 0402 R12,R14,L23,R22,R17,C6,R34
0090001 SMD RESISTOR 1/16W 0O±5% 0603 R13
0090326 SMD RESISTOR 1/16W 10O±5% 0402 L10,R18,R29,R30,R31
0090644 SMD RESISTOR 1/16W 18O±5% 0402 R5,R7,L8
0090362 SMD RESISTOR 1/16W 1K±5% 0402 R3,R11,R23,R50,R51
0090369 SMD RESISTOR 1/16W 2.2K±5% 0402 R67
0090639 PRECISION SMD RESISTOR 1/16W 1.5K±1% 0402 R37
0090377 SMD RESISTOR 1/16W 4.7K±5% 0402 R2,R4,R6,R8,R9,R43,R44
0090385 SMD RESISTOR 1/16W 10K±5% 0402 R33,R56,R58,R19
0090400 SMD RESISTOR 1/16W 47K±5% 0402 R16,R20,R21,R63,R64,R65
0090485 PRECISION SMD RESISTOR 1/16W 27K±1% 0402 R53
0090408 SMD RESISTOR 1/16W 100K±5% 0402 R28,R39,R40,R59,R62,R10
0090687 PRECISION SMD RESISTOR 1/16W 240K±1% 0402 R49

MATERIAL NAME SPECIFICATIONS LOCATION

0090645 PRECISION SMD RESISTOR 1/16W 180K±1% 0402 R77
0090425 SMD RESISTOR 1/16W 470K±5% 0402 R45
0090433 SMD RESISTOR 1/16W 1MO±5% 0402 R32,R35,R55
0090436 SMD RESISTOR 1/16W 2MO±5% 0402 R47

1030033

1030029

0310416 SMD CAPACITOR 50V 22P±5% NPO 0402 C22,C23,C65
0310704 SMD CAPACITOR 25V 102±10% X7R 0402 C53
0310453 SMD CAPACITOR 25V 103±10% X7R 0402 C55
0310705 SMD CAPACITOR 25V 332±10% X7R 0402 C27,C28

0310480 SMD CAPACITOR 10V 104±10% X5R 0402

0310790 SMD CAPACITOR 10V 104±20％ X5R 0402

0310216 SMD CAPACITOR 10V 105 +80%-20% 0603 C33,C35

SMD PRESS SENSITIVITY
RESISTOR

SMD PRESS SENSITIVITY
RESISTOR

SDV1005H180C100GPT 0402 C7,C11,C12,C64,C72　　　　①

SFI0402-050E100NP C7,C11,C12,C64,C72　　　　①

C3,C5,C14,C17,C20,C21,C26,C30,C34,C37,C3
8,C40,C41,C42,C44,C45,C48,C50,C52,C57,C5
9,C60,C61,C63,C66,C69,C70,C73,C74

②

C3,C5,C14,C17,C20,C21,C26,C30,C34,C37,C3
8,C40,C41,C42,C44,C45,C48,C50,C52,C57,C5
9,C60,C61,C63,C66,C69,C70,C73,C74

②

0310717 SMD CAPACITOR 6.3V 475±20% X5R 0603 C54

0310389 SMD CAPACITOR 10V 106 +80%-20% Y5V 0805

- 60 -

C1,C18,C19,C24,C25,C29,C36,C43,C46,C49,C
51,C56,C58

MATERIAL

CODE

MATERIAL NAME SPECIFICATIONS LOCATION

0310752 SMD CAPACITOR 25V 106±10% X5R 1206 C62
0310675 SMD TANTALUMCAPACITOR 6.3V 68uF±20% 3528（B） C4　　　　③
0310838 SMD TANTALUMCAPACITOR 6.3V 68UF±20% 3528 T≤2.1 C4　　　　③
0310736 SMD TANTALUMCAPACITOR 4V 220uF±20% 3528(B) C31,C32,C2,C10
0700057 SMD DUAL DIODE MMBD4148CC SOT-23 D3
0680077 SMD SCHOTTKY DIODE MBR0520 SOD123 D4
1090080 ESD ELEMENT RCLAMP0504F SC70-6L D1　　　　④
1090084 ESD ELEMENT PLR0504F-P SC70-6L D1　　　　④
0390142 SMD MAGNETIC BEADS FCM1608-601T02 L1,L13,L14,L15,L16,L17,L24

0390388 SMD MAGNETIC BEADS 600O/100MHZ±25% 1005

L2,L3,L4,L6,L7,L9,L11,L12,L19,L20,L22,R60,R
61

0390387 SMD CORES INDUCTOR 4.7uH±30% CDRH3D16/HP L25
0390426 SMD CORES INDUCTOR 33uH±20% CDRH3D16/HP L18,L26
0390044 SMD INDUCTOR 10UH±10% 2012 L21
0780293 SMD TRIODE MMST3906 SOD-323 Q2
0780298 SMD TRIODE MMST3904 SOD-323 Q4
0780300 SMD TRIODE SS8550LT SOD-323 Q1,Q5
0882403 IC PNX0101ET/N302 TFBGA U6
0882481 IC G690L263T71 SOT23-3 U9
0882480 IC PQ1X281M2ZP SOT23-5 U7　　　　⑤
0882629 IC TPS793285DBVR SOT23-5 U7　　　　⑤
0882565 IC LM2703 SOT-23-5 U4　　　　⑥
0882438 IC TPS61041 SOT-23 U4　　　　⑥
0882999 IC FAN5331 SOT23-5 U4　　　　⑥
0790068 SMD FIELD EFFECT TRANSISTOR SI1912 SOT363 U10　　　　⑦
0790070 SMD FIELD EFFECT TRANSISTOR NTJD4401N SOT363 U10　　　　⑦
1140070 MICROPHONE 44dB±3dB 4×1.5 WITH NEEDLE MIC1

0960284

SMD CMETAL OXIDE FILM
RESISTORSTAL OSCILLATOR

12MHz±30ppm 5032/4 20P X1

1980050 EARPHONE SOCKET 2SJ-A382-001 CN1

1970081 DUAL FLAT NEEDLE

1970091 DUAL FLAT NEEDLE

2×4 4.5mm 1.27mm STRAIGHT
INSERT,MOLD HIGH:1mm

2×9 11.4mm 1.27mm STRINGHT
INSERT MOLD HIGH 2.0

CN2

CN4

1860085 USB SOCKET 2UB-M002-001 USB1
1310057 SMD STIR SWITCH SSSS811101 SW1
1340099 SMD LIGHT TOUCH SWITCH SKRELGE010 S1,S2

- 61 -

MATERIAL

CODE

MATERIAL NAME SPECIFICATIONS LOCATION

1632837 PCB 4X17S-2 CN3
1340119 SMD LIGHT TOUCH SWITCH SKRHABE010 S3
1632820 PCB 2X17KP-1

FM MODULE 5447448

0310416 SMD CAPACITOR 50V 22P±5% NPO 0402 C15
0310418 SMD CAPACITOR 50V 27P±5% NPO 0402 C2
0310424 SMD CAPACITOR 50V 47P±5% NPO 0402 C4
0310432 SMD CAPACITOR 50V 101±5% NPO 0402 C1
0310706 SMD CAPACITOR 25V 472±10% X7R 0402 C3
0310717 SMD CAPACITOR 6.3V 475±20% X5R 0603 C5
0310712 SMD CAPACITOR 10V 473±10% X5R 0402 C6,C7,C8
0310710 SMD CAPACITOR 16V 333±10% X5R 0402 C12,C9
0310711 SMD CAPACITOR 10V 393±10% X5R 0402 C10
0310453 SMD CAPACITOR 25V 103±10% X7R 0402 C11
0310704 SMD CAPACITOR 25V 102±10% X7R 0402 C14,C18
0310455 SMD CAPACITOR 16V 223±10% X7R 0402 C16,C17
0310480 SMD CAPACITOR 10V 104±10% X5R 0402 C13,C19　　　　⑧
0310790 SMD CAPACITOR 10V 104±20％ X5R 0402 C13,C19　　　　⑧
0090326 SMD RESISTOR 1/16W 10O±5% 0402 R1
0090390 SMD RESISTOR 1/16W 18K±5% 0402 R2
0090385 SMD RESISTOR 1/16W 10K±5% 0402 R3
0090447 SMD RESISTOR 1/16W 22O±5% 0402 R7,R4
0090408 SMD RESISTOR 1/16W 100K±5% 0402 R5
0090396 SMD RESISTOR 1/16W 33K±5% 0402 R6
0700115 SMD TRANSFIGURATION DIODE BB202 D1,D2
0390112 SMD COIL THREAD INDUCTOR 33nH±5% 1608 L2,L3
0390326 SMD COIL THREAD INDUCTOR 120nH±5% 1608 L1
0882388 IC TEA5767HN HVQFN U1

0960279

1860088 FLAT FEMALE

SMD CMETAL OXIDE FILM
RESISTORSTAL OSCILLATOR

32.768KHz±20ppm SSPT6 12.5P XT1
4p 1.27mm DUAL RANK,SMD,MOLD

HIGH 2.1mm

CN1

1632821 PCB FX17KP-1

FLASH MODULE 5448791

0310480 SMD CAPACITOR 10V 104±10% X5R 0402 C1,C2　　　　⑨
0310790 SMD CAPACITOR 10V 104±20％ X5R 0402 C1,C2　　　　⑨

- 62 -

MATERIAL

CODE

MATERIAL NAME SPECIFICATIONS LOCATION

0090408 SMD RESISTOR 1/16W 100K±5% 0402 R1,R2
0882875 IC K9K8G08U0M-PCB0 TSOP U1　　　　⑩
0883145 IC K9K8G08U0A-PCB0 TSOP U1　　　　⑩
1632730 PCB GX17KP-0
0882882 IC K9F4G08U0M-PCB0 TSOP U1　　　　⑾
0882675 IC K9K4G08U0M-PCBO TSOP U1　　　　⑾
0882619 IC K9K4G08U0M-YCBO TSOP U1　　　　⑾
0883070 IC K9F4G08U0A-YCBO TSOP U1　　　　⑾
0883101 IC K9K4G08U0A-YCBO TSOP U1　　　　⑾

- 63 -