BBK X31 Service Manual

X31(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

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

2.2 BASIC OPERATIONl

2.2.1 INSTALL USB DRIVE PROGRAM

2.2.2 USE MOBILE STORAGE FUNCTION

2.2.3 DISCONNECT USB SAFELY

2.2.4 BROWSE/CANCEL FILE

2.2.5 PLAY MUSIC

2.2.6 A-B REPEAT FUNCTION

2.2.7 RECORDING

2.2.8 TUNING

4

5

6

7

2.3 SETTINGS

8

2.3.1 SETTINGS

2.3.2 PLAY MODE

2.3.3 EQ SELECT

2.3.4 SLEEP

2.3.5 PLAYLIST

2.3.6 FM CHANNEL

2.3.7 LOCK SETUP

2.3.8 SCREEN SAVE

2.3.9 ADVANCED

2.4 SPECIFICATION

Chapter Three Servicing and Principle

section One Principle of the Player

3.1.1 Function introduction

3.1.2 Block diagram of the player

8

9

10

11

12

3.1.3 Introduction to IC used by the player

Section Two Unit Circuit Principle

3.2.1 FLASH circuit principle

3.2.2 FM tuning circuit

3.2.3 OLED module circuit

3.2.4 Buttons circuit

3.2.5 Headphone jack circuit

3.2.6 Charge control circuit

3.2.7 Battery protection circuit

3.2.8 Power circuit

3.2.9 Reset circuit

3.2.10 Power on/off circuit

3.2.11 Microphone circuit

Section Three Servicing Cases

3.3.1 Servicing cases

13

14

15

16

17

18

19

20

21

22

23

25

3.3.2 Troubleshooting flow chart

Section Four Waveform diagram

Section Five Function Introduction to IC

3.5.1 Function introduction to PNX0102AEX

28

33

40

3.5.2 Function introduction to K9F4G08U0M

51

3.5.3 Function introduction to TPS79301

3.5.4 Function introduction to G690L263T71

3.5.5 Function introduction to TPS62200

3.5.6 Function introduction to Lm2713

3.5.7 Function introduction to TEA5767HN

3.5.8 Function introduction to ISL6294IRZ

3.5.9 Function introduction to PIC10F200T

3.5.10 Function introduction to PQ1X281M2ZP

3.5.11 Function introduction to Si1912

Chapter Four Assembly and Disassembly Process

4.1 Disassembly process of the player

4.2 Assembly process for the player

Chapter Cinque PCB board & Circuit diagram

54

55

56

57

60

61

62

63

64

65

68

Section One PCB board

Section Two circuit diagram

Chapter six BOM List

68

70

74

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 PNX0102 audio decode chip

Adopt famous Plilips PNX0102 audio decode chip, special for Hi-Fi Mp3 player, forcefully making up audio signal loss when compressing Mp3 to revert audio signal better. #Play MP3/WMA/WAV files

Support 16kbps~320kbps Mp3 file and 8kbps~192kb0s WMA file. #Mobile storage function

Capable of downloading files form Windows resource manager. #FM tuning

Full-auto, automanual and manual scanning function may listen to FM radio station program more easily. #Voice recording function

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

USB 2.0 high 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

1

2

#Press in power off mode #Press for long in power on mode #Press in playback interface #Press when recording #press when tuning #press in tuning SCAN mode #press when operating in menu

3

#Press in playback interface #Press for long in playback interface

power on power off switch in pause/play pause recording mute save radio station and switch mode to PRESET enter selected item or confirm setup the previous/next track fast backward/forward

- 4 -

#Press in tuning PRESET mode #Press for long in tuning PRESET mode #Press in tuning SCAN mode #Press for long in tuning SCAN mode #When operating in menu #Press or for long in “My EQ”

M

4

#Press for long in any mode #Press when tuning #Press for long when recording #Press when operating in menu

#

Press when playing

5

6

#Press in playback interface or when tuning #Press in "My EQ" #Press "-" button when browsing file #Press "+" button for long when tuning

7

USB/headphone jack

8

MIC:microphone

2.1.3 MAIN MENU ILLUSTRATION

select channel full auto scanning manual scanning automanual scanning move cursor or set item select the frequency point you want to set

enter main menu switch in PRESET and SCAN mode quit recording not save the setup and return to the previous menu Set A-B reread adjust volume adjust dB value enter cancelling file dialogue box

enter FM recording

#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

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

Select " System Setup" to set system items.

2.1.4 PLAYING INTERFACE ILLUSTRATION

1

Playback state

6

Serial number of the current track

2

Number of all tracks

3

Sound effect mode

4

5

Playback mode

Battery capacity

7

Id3 information/singer/lyrics display

8

Time that has been played of the current track

9

Spectrum of the currenttrack

- 5 -

1

2

5

3

4

1

PRESET mode (normal receiving)

2

Battery capacity

3

Frequency of the current radio station

4

PRESET channel display

5

SCAN mode (scanning)

5

1

2

3

1

Name of recorded file

2

Battery capacity

3

Time that has been recorded

4

The left recordable time

5

Recording state

4

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

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. 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:

2.2.2 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.

2.2.3 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.

2.2.4 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".

- 6 -

Press button to select upward or

/

downward and then press button to enter files browsing .

PRESS FOR LONG

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

2.2.5 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. #FF and FB

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

/

PRESS

track, it switches into normal playback automatically.

#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:

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.

2.2.6 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

2.2.7 RECORDING

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

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

PRESS

PRESS FOR LONG

#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 "FULL DISC" and exits recording.

#When recording with microphone, if you press

buttons and the sound of pressing may probably be recorded.

2.2.8 TUNING

#ENTER TUNING MODE

- 7 -

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.

In the course of full auto/automanual

scanning, press or button to stop

/

scanning.

#FM RECORDING

When listening to radio , press button for long to enter FM recording . Press button for long to stop recording and generate into recording file. The generated file of FM recording is wav format.

PRESS

1. PRESET mode #ADJUST CHANNEL

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

#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 0.1 Mhz 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. #SAVE RADIO STATION

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

PRESS

#CAUTION:

PRESS FOR LONG

2.3 SETTINGS

2.3.1 SETTINGS

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

#Playlist Browse Edit Delete #FM Channel Auto Mono #Lock Setup Lock Disable Lock Enable #Screen Save Disable~5Min #Advanced My EQ REC Set Format Load Default System Info Language

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.

PRESS

- 8 -

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.

2.3.3 EQ SELECT

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

/

as follows:

PRESS

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

NORMAL

PURE

POP

CLAS

JAZZ

ROCK

DBASS

DISCO

My EQ

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.

2.3.4 SLEEP

Press or 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.

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

have difference.

2.3.5 PLAYLIST

#Browse

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

PRESS

Note:

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

#Edit

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

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

PRESS

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.

2.3.6 FM CHANNEL

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

PRESS

CAUTION:

#It is defaulted to be invalid each time when

power on.

2.3.7 LOCK SETUP

Entering this menu may open or close auto buttons lock function. If “Lock Enable”is selected and not any button is operated during 30 seconds, all button functions will be locked automatically.

- 9 -

PRESS

CAUTION:Lock is only effective in playback,

recording and tuning modes.

2.3.8 SCREEN SAVE

Press or 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

2.3.9 ADVANCED

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

PRESS

#My EQ

In "My EQ" interface, you may see the decibel (dB) of each frequency.

#Formatting

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.

PRESS

#Default

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, press button to return to the previous menu.

PRESS

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

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 coding.

PRESS

CAUTION:

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

#Languages

Russian and English are supported.

PRESS

#Upgrade

Download the latest firmware upgrading file from BBK website firstly, such as "BBK_X31RU. ebn" and "X31RU_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.

- 10 -

PRESS

Model

Audio decode chip

Lithium battery

Continuous playback time

Dimensions/weight

Audio SNR

Headphone out

Frequency range

FM tuning range

Working temperature

Files supported

57.4mm 36.5mm 12.5mm about 23.1g

3.7V 170mAh

The longest time is about 7 hours

X31

Philips PNX0102

90dB

9mW+9mW(320hm impedance)

0~40

18Hz~20kHz

87.5MHz~108MHz

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

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.

2.4 SPECIFICATION

#To ensure successful firmware upgrading, do

not power off during the course of upgrading.

#Upgrading will last for 10 seconds or more,

please try your best not to operate other 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 -

Chapter Three Servicing and Principle

Section One Principle of the Player

3.1.1 Function introduction

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

3.1.2 Block diagram of the player

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

32.768K

CRASTAL

HEADPHONES

ANTI-POP CIRCUIT

IMPEDANCE MATCH

MICROPHONE

USB INTERFACE

3V-12V DC-DC

CONVERTER

OLED MODULE

FM MODULE

PNX 0102

NAND

FLASH MEMORY

LDO MODULE

2.8V VOLTAGE

1.8V

VOLTAGE

BUTTON ARRAY

RESET CIRCUIT

12M CRYSTAL

3.0V VOLTAGE

1.8V

DC-DC

POWER

MANAGEMENT

LI-ON BATTERY

RECHARGE

CIRCUIT

USB INTERFACE

3.3V

DC-DC

Figure 3.1.2.1 block diagram

- 12 -

3.1.3 Introduction to IC of the player

IC model IC model Function

TPS79301 U1 Precision voltage stabilizer

G690L263T71 U2 Reset IC

TPS62200 U3 Precision voltage stabilizer

ISL6294IRZ U4 Charge management

PIC10F200T U5 Voltage detect

PNX0102AEX U6

MP3 decode

PQ1X281M2ZP U7 Precision voltage stabilizer

K9F4G08U0M U8 Flash

SI1912 U9, U10

Dual MOS tube

LM2703 U11

12V boost

TEA5767HN FU1

TuningIC

Introduction to IC of the player is shown as in the following table:

- 13 -

Section Two Unit Circuit Principle

3.2.1 FLASH circuit

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

K9F2G08 U0M-YCBO

U8

1

VCC33

L13 601

C47

104 X5R

R38 100K

D_GND

NC

2

NC

3

NC

4

NC

5

NC

6

GND

7

/RE

FLASH3V3 FLASH3V3

D_GND

CLE ALE /WE /WP

R48 100K

/CE

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

8 9

RY/BY RE CE 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

Vcc Vss

NC

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

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

D_GND

MPMC_AD3 MPMC_AD2 MPMC_AD1 MPMC_AD0

C48 104 X5R

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 K9F2G08U0M and peripheral

circuit to finish internal files’s working of read, write and delete. 3.3V volatge circuit provides 3.3V

voltage for FLASH working. R38 is pull up resistor of /CE, R48 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.

- 14 -

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

FC6 473 X5R

FC7 473 X5R

FR1

10R

FM_3V3

FC5

475/X5R/6.3V

FC3

472 X7R

SGND

FC8 473 X5R

FR2 18K 1%

SGND

FM_OUTR

FM_OUTL

FC9 333 X5R

SGND

FU1

N.C

31 32 33 34 35 36 37 38 39

N.C

40

FR3

10K

FC12 333 X5R

27

29

30

N.C

DIFL128DIFL2

IFGAI

AGND

AVCC

RFI1

RFGND

RFI2

TCAGC

LOOPSW

N.C

CPOP2VCOT13VCOT24VCOVCC5DGND6DVCC7DATA8CLOCK9N.C

1

FC10

393 X5R

21

22

23

24

26

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

FC18

102 X7R

FC17

223 X7R

SGND SGND

FC16

FR6

33K

FC14

102 X7R

FM_3V3

223 X7R

SGND

FC15

22PF

D-GND

XT1

CRYSTAL

OR 13MHz

32.768KHz

601

D-GND

FR61

2

IIC_SDA

IIC_SCL

601

FR60

FR5

100K

FC2 27PF NPO

FC1 101 NPO

FM_ANT

FM_ANT3

FC4 47PF NPO

FL1

120nH 2%

BB202

MURATA

O603CS

TOKO SMD

COILCRAFT

LLQ1608-AR10G

FM_3V3

FD1

FC11

FL2

33nH 2%

FR4

22R

D-GND

FC19

104 X5R

BB202

FD2

103 X7R

FL3

33nH 2%

SGND

FC13

104 X5R

FM_3V3

dandu

FR7

22R

D-GND

Figure 3.2.2.1 FM tuning circuit diagram

- 15 -

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

company and peri

pheral circuit. Power supply voltage is supplied by PQ1X28 to provide pure voltage

with value 2.8V for IC. FC1, FC2, FC3, FC4 and Fl1 are antenna input matched circuit of FM module;

variable diode Fd1, Fd2 and winding inductor is tuning circuit in FM module. Control of FM adopts IIC

bus control means, 8, 9 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:

R66

2M

CN5

GN D1VDD2BS13BS24RES#6D/C#7WR#8RD#9D010D111D212D313D414D616D717IREF18VCOMH19VCC

D5

15

2

LCD_DB52LCD_DB62LCD_DB42LCD_DB3

LCD_DB7

CS#

5

GND

R46 4.7K

R47 4.7K

R72

0R

2

LCD_CS

LCD_WR

LCD_DB02LCD_DB22LCD_DB1

LCD_D/C

LCD_RD

2

LCD_RESET2

LCD_3V3

C62

104 X5R

C65

475/X5R/6.3V

P_VDD

L23

601

EN2

2

VCC33

R69 100K

R74 0R

L24

CDRH3D16-4R7

5

VIN

GND

4

EN

TPS61040/LM2703

SW

FB

MBR0520/SOD123

1

2

3

U11

D8

R70

240K 1%

R76

27K 1%

VOLED

L30

GND

C63

22PF NPO

0R

C64

106/25V/1206

16V/104/X5R

C67

NC

21

20

C60

103 X7R

VOLED

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,

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

on two ends of FB, and the following relation is met:

- 16 -

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 R1 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 Buttons circuit

1. Buttons circuit is shown in the figure 3.2.4.1:

VCC33

R71 1K

KEY_SCAN_2 2

C66 104 X5R

SFI0402-050E100NP

D_GND

KEY_SCAN_1 2

C71

MENU

R16 47K

D_GND

R24 1K

VCC33

Q3

SS8550LT

S2

MENU

C73

SFI0402-050E100NP

D_GND

R21 51K

D_GND

S1

S4

VOL+

D_GND

R73 1K

S5

VOL-

VCC33

R19 1K

D_GND

DFU

R22 0R

C72 104 X5R

D_GND

S3

C59 104 X5R

C70 SFI0402-050E100NP

Figure 3.2.4.1 Buttons circuit schematic diagram

2. Working principle: buttons of X23 (RU) are composed of 6 single buttons (one is OPEN/CLOSE

and PLAY button, which will be introduced in power on/off circuit). Button detecting uses voltage division

mode, which uses ADC circuit of PNX0102, through scanning KEY_SCAN_1_2 and KEY_SCAN_2_1

voltage variation, detects preset voltage value of buttons to decide which button functions; when the

relevant button is pressed, the voltage value of the relevant preset point of this button will change;

voltage inputs to ADC circuit of PNX0102, and the internal program makes the corresponding response

to realize function of each button.

- 17 -

3.2.5 Headphone jack circuit

1. Headphone jack circuit is shown in the figure 3.2.5.1:

USB_VBUS

L

R

R55 18R

R57 18R

R59 100K

3

1

SDCW2012-2-900T*

2 4

R77

180K 1%

T1

USB_DET 2

C69 104 X5R

USB_DM 2

USB_DP 2

PHONEJACK CN2

OUT_L

OUT_R

L15

L18 60

4 2 5 6 3 1

FM_ANT4

60

608

1/1

6

5

4

608

1/1

L16 601

FM_ANT

L17

601/1608

U9

Si1912DL

D1

G2

S2

S1

G1

D2

FM_ANT

1

2

3

R52 10k

OUT_L

OUT_R

Q8

SS8550LT

C54

C55 6PF*

5

1 623 4

6

5

R501KR51

4

PHONE_SEL 2

6PF*

HP_VOUTL 2

HP_VOUTR 2

1K

1

R40 1K

D7

U10

Si1912DL

1

S1

2

G1

3

D2

D1

G2

S2

Figure 3.2.5.1 Headphone jack circuit schematic diagram

2. Working principle: headphone audio output jack of X31 (RU), USB jack and charge jack are all

integrated on headphone socket, so headphone jack circuit fulfills 3 functions of audio output, USB data

change and charge, in addition, ground wire of headphone is also used as antenna input of FM tuning

circuit.

Left and right channel audio signals that output from PNX0102 are being coupled by 220uF

capacitor (C31, C32) and then output to headphone jack circuit. Headphone jack circuit is composed of

the dual MOS tube SI1912DL that controls sound output and the socket Cn2; pin 2 and 5 of SI1912DL

are connected with mute circuit; when MUTE button is pressed, dual MOS tube is cut off to cut output of

headphone left and right channel; D1 in circuit is TVS diode array used for ESD protection to prevent

external static damaging internal circuit through headphone jack.

USB jack line is composed of USB_VBS, USB_DP, USB_DM and GND. PNP triode Q8 in circuit has

reverse insert protection function to avoid damaging MP3 internal circuit because of reverse insert. USB

jack is directly connected with USB control module of PNX0102; after MP3 is connected with computer,

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

with PNX0102 through USB_DP and USB_DM and then connects with flash by PNX01021 to fulfill the

exchange of Flash internal data and computer internal data.

Meanwhile, USB_VBUS is connected with pin 1 IN of charge management IC ISL6294 to realize the

charge to lithium battery. Charge management circuit will be introduced in the next section.

- 18 -

3.2.6 Charge control circuit

1. Charge control circuit fulfills the charge function to lithium-ion battery and circuit diagram is

shown in the figure 3.2.6.1:

R8 1K

8 7 6 5

P_GND

D1 BAT43WS

R9 100

R18 510K

G

R20

120K 1%

Q2 SI2305D SS

D S

BAT+

C13 105 Y5V

BAT+

P_GND

1 2

BAT-

CN1 BAT

USB_VBUS

USB_VBUS3

VCC33

/STATUS2

CHGEN2

C11

105 Y5V

R17 47K

P_GND

R5 10K *

VBUS

1

IN

2

PPR

3

CHG EN4GND

U4 ISL 6 294

P_GND

BAT

IREF

IMIN

Figure 3.2.6.1 Charge control circuit diagram

2. Working principle: charge circuit is composed of charge control IC ISL6294 and peripheral circuit.

Pin IN is ISL6294 power input pin, that is input end of USB 5V power; BAT is output pin of ISL6294, that

is input end of lithium-ion battery; /CHG is charge state indication end; when /CHG is low level, it means

machine is in charge, or else it means the charge finishes; IMIN is min charge current setup end, that is,

when charge current is lower than the current set by this end, charge is terminated. Setup of min charge

current is realized through selecting external resistor R18. The relation between min charge current I

MIN

and R18 is shown as follows:

(mA)

From the above, we know that min charge current is 20 mA.

IREF is charge current setup end and ISL6294 uses this reference current to charge lithium battery.

Relation between charge current I and external resistor is shown as follows:

REF

- 19 -

3.2.7 Battery protection circuit

1. Battery protection circuit board is installed on lithium battery and used to prevent lithium battery

from damage of short-circuit, over discharge and over charge. Lithium battery and battery protection

circuit board are together called lithium battery core components. Battery protection board circuit

diagram is shown in the figure 3.2.7.1:

VCC

C2 104

1

BAT+

1

BAT-

S8261AAJMD-G2J-T2 SOT23-6

1

DOUT

2

3

1

2 3

4

U1

V-

COUT

ECH8601 2206A

U2

D1 D1 D2 D2

S1

G1

S2

G2

VSS

VDD

Ct

8

7

6

5

4

6

5

R1 470

C1 104

C3 104

Figure 3.2.7.1 Battery protection circuit diagram

Equivalent circuit diagram of battery protection circuit is shown in the figure 3.2.7.2:

P+

R1

Lithium battery

C1

5

Ct

Vss

VDD

U1

Dout

1

V-

Cout

3

C3

2

R2

4

B

6

C2

U2

P-

Figure 3.2.7.2 Battery protection circuit equivalent diagram

2. Working principle: battery protection circuit is mainly composed of battery protection IC S8261

and internal dual N groove MOSFET ECH8601. S8261 is the protection IC of the lithium-ion polymer

chargeable battery of internal high precision voltage detect circuit and delay circuit. DOUT and COUT

pin are over discharge (when lithium battery voltage is lower than 2.4V) protection output end and over

charge (when lithium battery voltage is higher than 4.2V) protection output end. The two pins are high

level when working normally; MOSFET is on and lithium battery voltage outputs to the player through

protection board; when in protection, the two pins output low level to control MOSFET to cut off power.

Over current detect (short-circuit protection) is fulfilled through the control of DOUT and COUT output by

V- pin when detecting short-circuit state; when battery is in short-circuit, voltage on V- external resistor

R1 will have a sudden change, V- detects that voltage on R2 increases immediately and then outputs to

control DOUT and COUT and outputs low level at the same time to control MOS tube to cut off battery to

protect battery.

- 20 -

3.2.8 Power circuit

1. 3.3V power circuit is shown in the figure 3.2.8.1:

P_VDD

C7

106/X5R

P_GND

R2 68K

EN

U1

TPS7

1

VIN

2

GND EN3BYPASS

P_GND

9301SO

C6 102

Figure 3.2.8.1 3.3V power circuit

T23-

VOUT

FB

6

6 5 4

C5 103

P_GND

R3 20K 1%

R1

C2 22PF

33K1 %

VCC33

C3 106/X5R

P_GND

3.3V power is supplied by IC TPS79301 and peripheral circuit. TPS79301 is linear voltage

stabilizing module (also called LDO), EN pin is the enable pin that controls normal working and high

level is effective; BYPASS has resistor onside and constitutes low-pass filter with external 103 capacitor

C5 to decrease output noise; setup of TPS79301 output voltage is decided by two external resistors of

FB pin and he relation is shown as follows:

From the above, we know that VOUT is 3.2V.

2. 2.8V power circuit is shown in the figure 3.2.8.2:

VCC33

U7

PQ1X281M2ZP

1

VI

2

C36 106/X5R C46

GND EN3BYPASS

VOUT

5

4

C42 104

P_GND D_GND

Figure 3.2.8.2 2.8V power circuit diagram

D_GND

2.8V

106/X5R

- 21 -

1.8V power is supplied by IC TPS62200 and peripheral circuit. TPS62200 is high efficiency reduce

DC-DC converter; EN pin is enable pin and high level is effective; the relation between TPS62200 output

voltage and FB pin feedback resistor is :

From the above, we know that output voltage is about 1.75V.

3. 1.8V power circuit is shown in the figure 3.2.8.3:

P_VDD

C8 106/X5R

P_GNDP_GND

U3

00/

TPS622

1 2 3

EN

Figure 3.2.8.3 1.8V power circuit diagram

FAN

VI GND EN

5307*SO

SW

FB

T

L1

3

5

2

CDRH3D16/HP-100

5

4

R4

300K 1%

R5

120K 1%

P_GND

C7

47PF

C10 101

VCC18

C9 106/X5R

In order to enhance and better sound quality of Mp3, FM tuning and microphone effect, TPS62200

provides 2.8V power with low ripple interference. EN is enable end and high level working.

3.2.9 Reset circuit

1. Reset circuit is shown in the figure 3.2.9.1:

VCC18

VCC33

U2 G690L263T71/R3111N252CT1

2

GND

VCC

RESET

3

1

P_GND

/RESET 2,3

C4

SFI0402-050E100NP

P_GND

Figure 3.2.9.1 Reset circuit diagram

2. Working principle: reset circuit is composed of reset IC G690L263 (U2). When power on, pin 2

level of G690L263 changes from 0V to 3.3V, pin 3 outputs a low level reset pulse signal with pulse

width140 millisecond which inputs to T14 pin of PNX0101 for the reset of the player; C11 in the circuit is

pressure responsive resistor used to protect ESD.

- 22 -

3.2.10 Power on/off circuit

1. Power on/off circuit diagram is shown in the figure 3.2.10.1:

VCC33

PLAY/PAUSE2

START1

R68

100k

D9 1N4148WS

C77 SFI0402-050E100NP

P_GND

L25 601/1005

S6

START/PLAY/PAUSE

D_GND

Figure 3.2.10.1 Power on/off control circuit diagram

2. Working principle: when users are operating “ON/OFF” button S6, the player is powered on;

press S6 for long and S6 is connected, voltage in STAT point is pulled down to ground, START sends out

low level signal through U5 to PNX0102 and the player starts up. If you want to power off, press S6

button for long, PNX0102 sends out OFF signal and the player stops working.

S6 is also PLAY/PAUSE button; L3 pin of PNX0102 detects voltage on R68 and makes

PLAY/PAUSE action when pressing S6 button.

3.2.11 Microphone circuit

1. Microphone circuit is shown in the figure 3.2.11.1:

DAC_VDDA33

Q4

MMST3904

R62 100K

R45 470K

MICROPHONE

MIC1

C58 106 X5R

GND

R67

2.2K

Figure 3.2.11.1 Microphone circuit diagram

- 23 -

C61

104 X5R

ADC_MIC

2

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

circuit. MIC1 switches the recorded external voice signals into electric signals, through C61 coupling,

outputs to ADC circuit of PNX0101 to switch analog electric signals into digital signals and forms WAV

files through software encoding and saves in FLASH. R62, R45, Q4 and C56 in circuit is triode voltage

stabilizing system, which provides microphone with stable power bias, R67 is bias resistor of

microphone.

- 24 -

Section Three Servicing Cases

3.3.1 Servicing cases

[ Example 1 ] Syntom: power not on

Description: no OSD and no output

Analysis and troubleshooting: connect with power adapter and check whether charge is available

and whether screen has display and result is that there is no display; take down machine and check

power supply 3.3V and 1.8V, we find that 3.3V decreases to 0.6V; use power adapter to suppl power,

input 5V is normal, charge enable end is high level and it is also normal; observe carefully and find that

pin 2 of U1 (TPS79301) has false welding; after weld again, trouble is removed.

[ Example 2 ] Symptom: machine cannot be switched on

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

Analysis and troubleshooting: firstly make sure whether machine cannot be switched on or power

not on; connect with power adapter or computer and check whether screen displays normally; connect

with power adapter and charge can display, which means that power and rear stage circuit working is

normal; power on/off circuit, through a light touch switch 5S, forms loop after closing; a Start signal

produces and enters U5 (PIC10F200) pin 1 high level to make pin 4 produce a high level to give power

an enable end signal to control whether the whole circuit works; test S5 switch, press SHUT and check

whether it is on; when testing, we find that S5 has false welding; after welding again, trouble is removed.

[ Example 3 ] Symptom: noise appears when tuning

Description: noise appears when tuning.

Analysis and troubleshooting: firstly judge whether tuning components or common part has trouble,

whether one side of headphone has sound when listening, and the result is normal; then switch to tuning

State, search radio station automatically, tuning is normal, which means power supply, data and clock

are normal; we remote external interference, receive the nearest local radio station and check whether it

is clear, and the result shows noise still exists; circuit that causes noise is high frequency tuning and

mixed frequency part; carefully check and find that pin 37 of tuning FU1(TEA5767HN)is false welding;

weld again and trouble is removed.

- 25 -

[ Example 4 ] Symptom: no OSD

Description: screen has no display

Analysis and troubleshooting: firstly confirm whether trouble lies in power or screen itself; power on

and listen to the sound and sound s normal, so it is preliminarily judged that power supply 3.3V and 1.8V

are both basically normal. Firstly test voltage on two ends of L24 and it is about 4.3V, which is 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, R74 of EN enable end has false

welding, after welding again, trouble is removed.

[ 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 3.3.1.2. 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.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

R62 100K

R45 470K

Q4

MMST3904

C58

106

R67

2.2K

MIC1

MICROPHONE

GND

Figure 3.3.1.2 MIC circuit schematic diagram

- 26 -

C61

ADC_MIC

104

ADC_MIC 1

[ Example 7 ] Symptom: cannot connect with computer

Description: no display after connecting with computer and disk cannot be found

Analysis and troubleshooting: if software program is incorrect or lost, machine may probably not

be switched on or machine failure will happen; when this trouble appears, please fresh the software

firstly; firstly check whether software upgrading is available and then down load software program; after

upgrading software, trouble is removed.

[ Example 8 ] Symptom: cannot charge

Description: charge mode can display but in fact charge function is not available

Analysis and troubleshooting: charge mode and charge can both display but the player cannot be

fully charged; after 3 hours, unplug power adapter and power on, low battery charge displays and then

power off automatically; you may enter charge mode and there is charge indication, which means there

is power input,

BAT and CHG are normal, so we should consider charge control pin, check IMIN current

control end, when current of this pin is very small, charge stops; R20 has false welding; after welding

again, trouble is removed.

[ Example 9 ] Symptom: cannot connect with computer

Description: no response and no OSD after connecting with computer

Analysis and troubleshooting: firstly make sure whether charge and power on are normal and the

result is normal; use diode level of multimeter to test the resistance to ground of D+, D- data signals in

USB terminal position and it should be close to several hundred ohm, but we find that D+ resistance

value is normal, D- resistance value is infinite and USB terminal has false welding; after welding again,

trouble is removed.

[ Example 10 ] 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; test C31, C32 waveform close to BGA, so we judge that it is BGA that has trouble;

after changing it, trouble is removed.

- 27 -

3.3.2 Troubleshooting flow chart

1.Troubleshooting process for No screen display is shown in the figure 3.2.2.1:

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 is shown in the figure 3.2.2.2:

USB not connected

Q8 outputs

4.8V and whether it 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 is shown in the figure 3.2.2.3:

Buttons have no function

Confirm

whether all buttons

have no function

Y

whether machine

failure

N

Whether

3.3V circuit output is normal

Y

Check R19, R71

N

Change a certain button

Y

N

Change BGA

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

- 30 -

4.Troubleshooting process for No tuning function is shown in the figure 3.2.2.4:

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

whether BGA has tuning

Check

signal

BGA has trouble

2

Y

Figure 3.3.2.4 Troubleshooting flow chart for “No tuning function”

- 31 -

5 . Troubleshooting process for “Cannot charge” is shown in the figure 3.2.2.5:

Cannot charge

Connect

Whether

battery is fully

charged

N

with computer

and check whether charge

is available

N

Check set detect circuit

Y

Battery

is fully charged and

protected

Y

Discharge

supply of the player

Y

Power

is normal

Y

Whether

BAT voltage has

change

Y

Change battery

N

Figure 3.2.2.5 Troubleshooting flow chart for “Cannot charge”

Check power supply circuit

Change U4

- 32 -

Section Four Waveform diagram

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

µÚËÄ½Ú Î¬ÐÞ²ÎÊý

- 33 -

3. Software power supply 3V3 waveform diagram

4. LCD_3V3 waveform diagram

5. LCD_CS waveform diagram

- 34 -

6. LCD_RESET waveform diagram

7. LCD_D/C waveform diagram

8. LCD_WR waveform diagram

- 35 -

9. LCD_RD waveform diagram

10. LCD_DB0 waveform diagram

11. LCD_DB1 waveform diagram

- 36 -

12. LCD_DB2 waveform diagram

13. LCD_DB3 waveform diagram

14. LCD_DB4 waveform diagram

- 37 -

15. LCD_DB5 waveform diagram

16. LCD_DB6 waveform diagram

17. LCD_DB7 waveform diagram

- 38 -

18. IREF waveform diagram

19. VCOMH waveform diagram

20. VOLED waveform diagram

- 39 -

Section Five Function Introduction to IC

3.5.1 Function introduction to PNX0102AEX

1. Description

The PNX0102 (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 PNX0102 very suitable for portable hand-held devices.

The PNX0102 is based on the powerful ARM7TDMI CPU core, which is a full 32-bit RISC processor with 8 kbyte dedicated cache.

2. Features

2.1 General Features

One chip solution for compressed audio players using flash memory◆ Programmable architecture enables flexible support of “up◆ -coming” digital music formats FM Radio inp◆ ut and control support Embedded program flash for easy upgrading and increased program security◆ Support for Philips LifeVibesTM audio enhancement algorithms◆ Small footprint package TBGA180 10 x10mm 0.5pitch◆

2.2 Hardware Features

ARM7TDMI + 8kByte ca◆ che Embedded 64kByte RAM and 32 kByte ROM◆ Ultra low power Audio DSP for support of Philips LifeVibesTM audio enhancement algorithms◆ Integrated embedded program Flash (8M bit)◆ Maximum 4Mbyte of e xternal static memory◆ External memory support: Nand ◆ Flash/Compact flash/MMC/SMC/SRAM/ROM/SDRAM Integrated MCI interf ace◆ Integrated USB 2.0 HS compliant slave interface (for firmware upgrade, data support from/to PC, ◆

streaming audio)

Intelligent Configuration Power Management◆ Single battery operated ◆ embedded DC/DC converter Integrated 6800/8080 compatible LCD interface◆

- 40 -

General◆ -Purpose IO pins (nearly all pins can be configured as GPIO pins) Integrated Master/Slave IIC interface◆ Integrated ADC with line input and voice input (with recording pos◆ sibility) Built◆ -in ADC for level measurement & control (5-inputs) Integrated DAC with line output, headphone output w ith short◆ -circuit protection Integrated IIS input and output interface◆ Integrated SPDIF rece iver◆ Integrated UART + IRDA◆ Integra◆ ted Real Time Clock with alarm Boundary scan◆

2.3 Possible software features

MP3 encoding/decoding (*) => Support f or MPEG 1 layer 3 and MPEG 2 layer 2.5 and layer 3 audio ◆

decoding (MP3)

WMA decoding (*)◆ AAC decoding (*)◆ Ogg Vorbis decoding (*)◆

◆ Voice recording using ADPCM Intelligent power management software◆ USB Mass Storage Class◆ USB Device Firmware Upgrade◆ Philips LifeVibesTM sound enhancement software including bass/treble/volume control.◆ (*) Audio decoders/encoders do need appropriate licenses.

3. PIN Description

SYMBOL

BGA

BALL

12 MHz oscillator (fixed: 4 pins)

XTALH_IN T10 A input apio (ZI) 12 MHz clock input

XTALH_OUT V9 A output apio (IO) 12 MHz clock output

XTALH_VDDA18 U9 vddco Analog supply Oscillator

XTALH_VSSA T9 vssco Analog ground Oscillators

DIGITAL I/O

LEVEL

APPL.

FUNC

PIN STATE

AFTER RESET

CELL

DESCRIPTION

TYPE

32.768 kHz oscillator (fixed: 4 pins)

XTALL_IN V7 A input apio (ZI) 32.768 kHz clock input

XTALL_OUT T8 A output apio (ZI) 32.768 kHz clock output

XTALL_VDDA18 U8 vddco Analog supply Oscillators/PLL’s

- 41 -

XTALL_GNDA V8 vssco Analog ground Oscillators/PLL’s

bitslicer/SPDIF (fixed: 3pins)

SPDIF_IN T12 A input apio (IO) SPDIF input

SPDIF_VDDA33 U11 vddco Analog supply SPDIF input

SPDIF_GNDA T11 vssco Analog ground SPDIF input

10-bit ADC (fixed: 7 pins)

ADC10B_GPA4 U5 A input apio (ZI) Analog General Purpose pins

ADC10B_GPA3 T6 A input apio (ZI) Analog General Purpose pins

ADC10B_GPA2 U6 A input apio (ZI) Analog General Purpose pins

ADC10B_GPA1 T7 A input apio (ZI) Analog General Purpose pins

ADC10B_GPA0 U7 A input apio (ZI) Analog General Purpose pins

ADC10B_VDDA33 V10 vddco Analog supply 10-bit ADC

ADC10B_GNDA U10 vssco Analog ground 10-bit ADC

DAC (fixed: 13 pins)

DAC_VOUTR M3 A output apio (IO) SDAC Right Analog Output

DAC_VOUTL M2 A output apio (IO) SDAC Left Analog Output

DAC_VDDA33 L1 vddco SDAC Positive Voltage

DAC_VREFP L2 A input apio (IO) SDAC Positive Reference Voltage

DAC_VREFN M1 A input apio (IO) SDAC Negative Reference Voltage

HP_OUTR P3 A output apio (IO) SDAC Right Headphone Output

HP_OUTL N3 A output apio (IO) SDAC Left Headphone Output

HP_OUTCA N2 A output apio (IO)

HP_OUTCB N1 A output apio (IO)

HP_VDDA33A R1 vddco Headphone analog supply

HP_VDDA33B R2 vddco Headphone analog supply

HP_GNDAA P2 vssco Headphone analog ground

HP_GNDAB P1 vssco Headphone analog ground

Headphone common output reference

ADC (fixed: 11 pins)

ADC_VCOM T3 A input apio (IO) ADC Common Reference Voltage

ADC_VREFP U2 A input apio (IO) ADC Positive Reference Voltage

ADC_VREFN V1 A input apio (IO) ADC Negative Reference Voltage

- 42 -

ADC_VDDA18 V3 vddco Analog supply ADC

ADC_VDDA33 U3 vddco Analog supply ADC

ADC_GNDA V2 vssco Analog ground ADC

ADC_VREF U1 A input apio (IO) ADC Reference Voltage

ADC_VINR T1 A input apio (IO) SADC Right Analog Input

ADC_VINL T4 A input apio (IO) SADC Left Analog Input

ADC_MIC R3 A input apio (IO) Microphone input

ADC_MIC_LNA output Output of LNA of Microphone input

T2 A

HP_VCOM

LCD Interface (fixed: 12 pins)

input

apio (IO)

HP Common Reference Voltage

LCD_RW_WR

GPIO_LCD_11

LCD_E_RD

GPIO_LCD_10

LCD_DB_7

GPIO_LCD_9

LCD_DB_6

GPIO_LCD_8

LCD_DB_5

GPIO_LCD_7

G2 0-5 VDC tolerant I/O output

F2 0-5 VDC tolerant I/O output

E3 0-5 VDC tolerant I/O output

E2 0-5 VDC tolerant I/O output

D3 0-5 VDC tolerant I/O output

6800 read/write select 8080 active

bpts10tht

‘high’ write enable

5v

General Purpose IO pin

6800 enable 8080 active ‘high’ read

bpts10tht

enable

5v

General Purpose IO pin

Data input 7/Data output 7/Serial

bpts10tht

data output/4-bit data 3

5v

General Purpos IO pin

Data input 6/Data output 6/Serial

bpts10tht

data input/4-bit data 2

5v

General Purpose IO pin

Data input 5/Data output 5/Serial

bpts10tht

clock output/4-bit data 1

5v

General Purpos IO pin

LCD_DB_4

D1 0-5 VDC tolerant I/O output

GPIO_LCD_6

LCD_DB_3 Data input 3/Data output 3

D2 0-5 VDC tolerant I/O output

GPIO_LCD_5

LCD_DB_2 Data input 2/Data output 2

C3 0-5 VDC tolerant I/O output

GPIO_LCD_4

LCD_DB_1 Data input 1/Data output 1

C1 0-5 VDC tolerant I/O output

GPIO_LCD_3

bpts10tht 5v

Data input 4/Data output 4/4-bit data 0

General Purpose IO pin

- 43 -

LCD_DB_0 Data input 0/Data output 0

C2 0-5 VDC tolerant I/O output

GPIO_LCD_2

bpts10tht 5v

General Purpose IO pin

LCD_CSB Chip Select

B3 0-5 VDC tolerant I/O output

GPIO_LCD_1

LCD_RS

F3 0-5 VDC tolerant I/O output

GPIO_LCD_0

Memory Card Interface (fixed: 6 pins)

MCI_DAT_3 Data input/Data output

J3 0-5 VDC tolerant I/O input

GPIO_MCI_5

MCI_DAT_2 Data input/Data output

J1 0-5 VDC tolerant I/O input

GPIO_MCI_4

MCI_DAT_1 Data input/Data output

J2 0-5 VDC tolerant I/O input

GPIO_MCI_3

MCI_DAT_0 Data input/Data output

H3 0-5 VDC tolerant I/O input

GPIO_MCI_2

MCI_CLK MCI clock output

G3 0-5 VDC tolerant I/O output

GPIO_MCI_1

bpts10tht 5v

General Purpose IO pin

‘high’ Data register select ‘low’ instruction register select

General Purpose IO pin

MCI_CMD Command input/Command output

H2 0-5 VDC tolerant I/O input

GPIO_MCI_0

USB Interface (fixed: 4 pins + (8 pins reserved for future use))

USB_CONNECT_N

0-5 VDC tolerant I/O output

GPIO_USB_1

USB_RPU

USB_DP usb11 Positive USB data line USB 2.0 FS

USB_DP

USB_DM usb11 Negative USB data line USB 2.0 FS

USB_DM

USB_VBUS

GPIO_USB_0

USB_RREF P16 I/O

T15

A apio (IO) Reserved for USB 2.0 HS

U17 A input

T17 A input

U14 0-5 VDC tolerant I/O input

bpts10tht 5v

apio Positive USB data line USB 2.0 HS

apio Negative USB data line USB 2.0 HS

bpts10tht 5v

General Purpose IO pin

Soft connect output USB 2.0 FS

General Purpose IO pin

USB Supply detection line USB 2.0 FS & USB 2.0 HS

General Purpose IO pin

- 44 -

USB_GNDA R17 vssco Reserved for USB 2.0 HS

USB_VSSA_REF R16 vccso Reserved for USB 2.0 HS

USB_VSSA_TERM T16 vssco Reserved for USB 2.0 HS

USB_VDDA18_PLL U15 vddco Reserved for USB 2.0 HS

USB_VDDA18_BG U16 vddco Reserved for USB 2.0 HS

USB_VDDA33 U18 vddco Reserved for USB 2.0 HS

USB_VDDA33_DR V

DAI Interface (fixed: 3 pins)

DAI_BCK DAI Bitclock

GPIO_DAI_2

DAI_WS DAI Wordselect

GPIO_DAI_1

DAI_DATA DAI Serial data input

GPIO_DAI_0

DAO Interface (fixed: 4 pins)

DAO_CLK F16 0-5 VDC tolerant I/O output

DAO_BCK DAO Bitclock

GPIO_DAO_2

DAO_WS F18 0-5 VDC tolerant I/O output

V18 vddco Reserved for USB 2.0 HS

H17 0-5 VDC tolerant I/O input

G17 0-5 VDC tolerant I/O input

G16 0-5 VDC tolerant I/O input

G18 0-5 VDC tolerant I/O output

bpts10tht 5v

General Purpose IO pin

256 fs clock output

General Purpose IO pin

DAO Wordselect

DAO_DATA DAO Serial data output

F17 0-5 VDC tolerant I/O output

GPIO_DAO_0

JTAG (fixed: 6 pins)

JTAG_TRST_N T13 0-5 VDC tolerant

JTAG_TCK V4 0-5 VDC tolerant

JTAG_TMS U12 0-5 VDC tolerant

JTAG_TDI T5 0-5 VDC tolerant

JTAG_TDO U13 0-5 VDC tolerant I/O output

JTAG_SEL_ARM U4 0-5 VDC tolerant

IIC master/slave Interface (fixed: 2 pins)

I input ipthdt5v JTAG Reset Input (pull-down)

I input ipthut5v JTAG Clock Input (pull-up)

I input ipthut5v

I input ipthut5v JTAG Data Input (pull-up)

I input ipthdt5v JTAG selection (pull-down)

bpts10tht 5v

General Purpose IO pin

JTAG Mode Select Input (external pull-up)

JTAG Data output

- 45 -

IIC_SCL H16 0-5 VDC tolerant I/O input

iic400kt5

Serial clock IIC Slave

v

IIC_SDA J17 0-5 VDC tolerant I/O input

MPMC (fixed: 52 pins)

MPMC_D_15 MPMC data input/output 15

B8 I/O input bpts10th

GPIO_MPMC_50

MPMC_D_14 MPMC data input/output 14

C8 I/O input bpts10th

GPIO_MPMC_49

MPMC_D_13 MPMC data input/output 13

B7 I/O input bpts10th

GPIO_MPMC_48

MPMC_D_12 MPMC data input/output 12

C7 I/O input bpts10th

GPIO_MPMC_47

MPMC_D_11 MPMC data input/output 11

B6 I/O input bpts10th

GPIO_MPMC_46

MPMC_D_10 MPMC data input/output 10

C6 I/O input bpts10th

GPIO_MPMC_45

iic400kt5

Serial data IIC Slave

v

General Purpose IO pin

MPMC_D_9 MPMC data input/output 9

C5 I/O input bpts10th

GPIO_MPMC_44

MPMC_D_8 MPMC data input/output 8

C4 I/O input bpts10th

GPIO_MPMC_43

MPMC_D_7 MPMC data input/output 7

B5 I/O input bpts10th

GPIO_MPMC_42

MPMC_D_6 MPMC data input/output 6

A5 I/O input bpts10th

GPIO_MPMC_41

MPMC_D_5 MPMC data input/output 5

B4 I/O input bpts10th

GPIO_MPMC_40

MPMC_D_4 MPMC data input/output 4

A4 I/O input bpts10th

GPIO_MPMC_39

MPMC_D_3 MPMC data input/output 3

A3 I/O input bpts10th

GPIO_MPMC_38

General Purpose IO pin

MPMC_D_2 MPMC data input/output 2

B2 I/O input bpts10th

GPIO_MPMC_37

General Purpose IO pin

- 46 -

MPMC_D_1 MPMC data input/output 1

A2 I/O input bpts10th

GPIO_MPMC_36

MPMC_D_0 MPMC data input/output 0

A1 I/O input bpts10th

GPIO_MPMC_35

MPMC_A_20 MPMC address 20

C13 I/O output bpts10th

GPIO_MPMC_34

MPMC_A_19 MPMC address 19

B13 I/O output bpts10th

GPIO_MPMC_33

MPMC_A_18 MPMC address 18

A13 I/O output bpts10th

GPIO_MPMC_32

MPMC_A_17 MPMC address 17

C14 I/O output bpts10th

GPIO_MPMC_31

MPMC_A_16 MPMC address 16

B14 I/O output bpts10th

GPIO_MPMC_30

General Purpose IO pin

MPMC_A_15 MPMC address 15

A14 I/O output bpts10th

GPIO_MPMC_29

MPMC_A_14 MPMC address 14

C15 I/O output bpts10th

GPIO_MPMC_28

MPMC_A_13 MPMC address 13

B15 I/O output bpts10th

GPIO_MPMC_27

MPMC_A_12 MPMC address 12

C16 I/O output bpts10th

GPIO_MPMC_26

MPMC_A_11 MPMC address 11

B16 I/O output bpts10th

GPIO_MPMC_25

MPMC_A_10 MPMC address 10

C17 I/O output bpts10th

GPIO_MPMC_24

MPMC_A_9 MPMC address 9

B17 I/O output bpts10th

GPIO_MPMC_23

General Purpose IO pin

MPMC_A_8 MPMC address 8

C18 I/O output bpts10th

GPIO_MPMC_22

MPMC_A_7 MPMC address 7

B18 I/O output bpts10th

GPIO_MPMC_21

MPMC_A_6

A18 I/O output bpts10th

General Purpose IO pin

MPMC address 6

- 47 -

GPIO_MPMC_20

MPMC_A_5 MPMC address 5

GPIO_MPMC_19

MPMC_A_4 MPMC address 4

GPIO_MPMC_18

MPMC_A_3 MPMC address 3

GPIO_MPMC_17

MPMC_A_2 MPMC address 2

GPIO_MPMC_16

MPMC_A_1 MPMC address 1

GPIO_MPMC_15

MPMC_A_0 MPMC address 0

GPIO_MPMC_14

D18 I/O output bpts10th

D17 I/O output bpts10th

D16 I/O output bpts10th

E18 I/O output bpts10th

E17 I/O output bpts10th

E16 I/O output bpts10th

General Purpose IO pin

MPMC_NSTCS_2

B11 I/O output bpts10th

GPIO_MPMC_13

MPMC_NSTCS_1

A8 I/O output bpts10th

GPIO_MPMC_12

MPMC_NSTCS_0

C9 I/O output bpts10th

GPIO_MPMC_11

MPMC_NDYCS SDRAM chip select. Active LOW.

B9 I/O output bpts10th

GPIO_MPMC_10

MPMC_CLKOUT A10 O output bpt4mt

MPMC_CKE SDRAM clock enable. Active HIGH.

B10 I/O output bpts10th

GPIO_MPMC_9

Static memory chip select 2. Default active LOW (reprogrammable).

General Purpose IO pin

Static memory chip select 1. Default active LOW (reprogrammable).

General Purpose IO pin

Static memory chip select 0. Default active LOW (reprogrammable).

General Purpose IO pin

Memory clock output. Connect to the clock input of SDRAM and SyncFlash devices.

General Purpose IO pin

MPMC_NWE

C11 I/O output bpts10th

GPIO_MPMC_8

Write enable for SDRAM. Active LOW.

General Purpose IO pin

- 48 -

Row address strobe for SDRAM

MPMC_NRAS

GPIO_MPMC_7

MPMC_NCAS

GPIO_MPMC_6

MPMC_DQM_1

GPIO_MPMC_5

A9 I/O output bpts10th

and SyncFlash devices. Active LOW.

General Purpose IO pin

Column address strobe for SDRAM and SyncFlash devices. Active

C10 I/O output bpts10th

LOW.

General Purpose IO pin

Data mask output to SDRAM. Active HIGH. The signal MPMCDQMOUT[1] mask byte

A11 I/O output bpts10th

[15:8] on the data bus. Used for SDRAM devices.

General Purpose IO pin

Data mask output to SDRAM. Active HIGH. The signal

MPMC_DQM_0

GPIO_MPMC_4

MPMC_NOE

GPIO_MPMC_3

MPMC_BLOUT1

GPIO_MPMC_2

MPMC_BLOUT0

C12 I/O output bpts10th

A17 I/O output bpts10th

B12 I/O output bpts10th

A12 I/O output bpts10th

MPMCDQMOUT[0] mask byte [7:0] on the data bus. Used for SDRAM devices.

General Purpose IO pin

Output enable for static memories. Active LOW. Used for static memory devices.

General Purpose IO pin

The signal nMPMCBLSOUT[1] selects byte lane [15:8] on the data bus. Used for static memory devices.

General Purpose IO pin

The signal nMPMCBLSOUT[0] selects byte lane [7:0] on the data bus. Used for static memory devices.

GPIO_MPMC_1

General Purpose IO pin

- 49 -

Reset power down to SyncFlash

MPMC_RPOUT

B1 I/O output bpts10th

GPIO_MPMC_0

UART (fixed: 4 pins)

UART_TXD Serial output

L3 0-5 VDC tolerant I/O output

GPIO_UART_3

UART_RXD Serial input

K3 0-5 VDC tolerant I/O input

GPIO_UART_2

UART_NCTS Clear to send (active low)

K2 0-5 VDC tolerant I/O input

GPIO_UART_1

UART_NRTS Ready to send

K1 0-5 VDC tolerant I/O output

GPIO_UART_0

Mode selection pins (fixed: 2 pins)

GPIO_3 J16 0-5 VDC tolerant I/O input

bpts10tht 5v

bpts10th dt5v

memory. Active LOW. Used for static memory devices.

General Purpose IO pin

Start up mode pin 2 (pull down) General Purpose IO pin

GPIO_2 K18 0-5 VDC tolerant I/O input

GPIO (fixed: 2 pins)

GPIO_1 K17 0-5 VDC tolerant I/O

GPIO_0 K16 0-5 VDC tolerant I/O input

Reset input pin (fixed: 1 pin)

RSTIN_N T14 0-5 VDC tolerant

Flash pins (fixed: 1 pins)

FLASH_VDD_HV V15 vddco

Digital supplies (fixed: 6 pins)

VDDI1 H1 vddco Core supply (Mem)

VDDI2 V11 vddco Core supply (Core)

VDDI3 V16 vddi Core supply (Flash)

I input ipthut5v System Reset input (active low)

input output

(Test Mode))

bpts10th dt5v

bpts10tht 5v

Start up mode pin 1 (pull down) General Purpose IO pin

General Purpose IO pin Toggled (Test Mode)

General Purpose IO pin (stop)

VSSI1 G1 vssco Core ground (Mem)

VSSI2 V12 vssco Core ground (Core)

VSSI3 V17 vssis Core ground (Flash)

- 50 -

Peripheral supplies (fixed: 12 pins)

VDDE1 E1 vdde3v3 Peripherel (I/O) supply (3.3V)

VDDE2 V5 vdde3v3 Peripheral (I/O) supply (3.3V)

VDDE3 V14 vdde3v3 Peripheral (I/O) supply (3.3V)

VDDE4 J18 vdde3v3 Peripheral (I/O) supply (3.3V)

VSSE1 F1 vsse3v3 Peripheral (I/O) ground

VSSE2 V6 vsse3v3 Peripheral (I/O) ground

VSSE3 V13 vsse3v3 Peripheral (I/O) ground

VSSE4 H18 vsse3v3 Peripheral (I/O) ground

VDDE5 A16 vdde3v3

VDDE6 A7 vdde3v3

VSSE5 A15 vsse3v3 MPMC Peripheral (I/O) ground

VSSE6 A6 vsse3v3 MPMC Peripheral (I/O) ground

DC/DC pins (fixed: 13 pins)

DCDC_PLAY L17 A apio Play button input

DCDC_STOP L18 A apio Stop signal input

DCDC_LX2 N17 A apio DC/DC connection to external coil 2

DCDC_LX1 P17 A apio DC/DC connection to external coil 1

DCDC_VUSB T18 A apio USB supply voltage

DCDC_VBAT M17 vddco Battery supply voltage

DCDC_VOUT33A R18 vddco DC/DC 3.3V output voltage

DCDC_VOUT33B M16 vddco DC/DC 3.3V input voltage

MPMC Peripheral (I/O) supply (1.8V .. 3.3V)

DCDC_VOUT18 N18 vddco DC/DC 1.8V output voltage

DCDC_VSS1 P18 vssco DC/DC ground to N-switch 1

DCDC_VSS2 N16 vssco DC/DC ground to N-switch 2

DCDC_GND L16 vssco Core ground and substrate

DCDC_CLEAN M18 vssco

Reference circuit ground, not connected to substrate

3.5.2 Function introduction to K9F4G08U0M

1. Description

- 51 -

Offered in 512Mx8bit, the K9F4G08U0M 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 data. 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.

2. Features

◆ Voltage Supply

– 2.7 V ~3.6 V

◆ Organization

– Memory Cell Array

– (512M + 16,384K)bit x 8bit

– Data Register

– (2K + 64)bit x8bit

– Cache Register

– (2K + 64)bit x8bit

◆ Automatic Program and Erase

– Page Program

– (2K + 64)Byte

– Block Erase

– (128K + 4K)Byte

◆ Page Read Operation

– Page Size

– 2K-Byte

– Random Read : 25μs(Max.) – Serial Access : 30ns(Min.)

◆ Fast Write Cycle Time

– Program time : 200μs(Typ.) – Block Erase Time : 2ms(Typ.)

◆ Command/Address/Data Multiplexed I/O Port

◆ Hardware Data Protection

- 52 -

– Program/Erase Lockout During Power Transitions

◆ Reliable CMOS Floating-Gate Technology

– Endurance : 100K Program/Erase Cycles – Data Retention : 10 Years

◆ Command Register Operation

◆ Cache Program Operation for High Performance Program

◆ Power-On Auto-Read Operation

◆ Intelligent Copy-Back Operation

◆ Unique ID for Copyright Protection

◆ Package :

– K9K4G08U0M-YCB0/YIB0

48-Pin TSOP I (12 x 20 / 0.5 mm pitch)

– K9W8G08U1M-YCB0/YIB0 : Two K9K4G08U0M stacked.

48-Pin TSOP I (12 x 20 / 0.5 mm pitch)

– K9K4G08U0M-PCB0/PIB0 : Pb-FREE PACKAGE

48-Pin TSOP I (12 x 20 / 0.5 mm pitch)

– K9W8G08U1M-PCB0/PIB0 : Two K9K4G08U0M stacked.

48-Pin TSOP I (12 x 20 / 0.5 mm pitch)

3. PIN Description

PIN No. Symbol I/O Description

29~32, 41~44

16

17

9

8

18

19

7

38

37 Vcc P POWER

I/O0 ~ I/O7

CLE

ALE

/CE

/RE

/WE

/WP

R/B

PRE

I/O

I

I READY/BUSY OUTPUT

I

DATA INPUTS/OUTPUTS

COMMAND LATCH ENABLE

ADDRESS LATCH ENABLE

CHIP ENABLE

READ ENABLE

WRITE ENABLE

WRITE PROTECT

POWER-ON READ ENABLE

36 Vss P GROUND

1~6, 9, 10, 14,

15, 20~24,

25~28, 33~35,

N.C N NO CONNECTION

- 53 -

39, 40, 45~48

3.5.3 Function introduction to TPS79301

1. Description

The TPS793xx family of low-dropout (LDO) low-power linear voltage regulators features high power supply rejection ratio (PSRR), ultralow noise, fast start-up, and excellent line and load transient responses in NanoStar wafer chip scale and SOT23 packages. NanoStar packaging gives an ultrasmall footprint as well as an ultralow profile and package weight, making it ideal for portable applications such as handsets and PDAs. Each device in the family is stable, with a 2.2-µF ceramic capacitor on the output. The TPS793xx family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (e.g., 112 mV at 200mA, TPS79330). Each device achieves fast star-up times (approximately 50µs with a 0.001-µF capacitor) while consuming very low quiescent current (170 µA typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than 1 µA. The TPS79328 exhibits approximately 32 µVRMS of output voltage noise with a 0.1-µF bypass capacitor. Applications with analog components that are noise sensitive, such as portable RF electronics, benefit from the high PSRR and low-noise features as well as the fast response time.

2. Features

◆ 200-mA RF Low-Dropout Regulator With Enable

◆ Available in 1.8-V, 2.5-V, 2.8-V, 2.85-V, 3-V, 3.3-V, 4.75-V, and Adj (1.22 V to 5.5 V)

◆ High PSRR (70 dB at 10 kHz)

◆ Ultralow Noise (32 µV)

◆ Fast Start-Up Time (50 µs)

◆ Stable With a 2.2-µF Ceramic Capacitor

◆ Excellent Load/Line Transient Response

◆ Very Low Dropout Voltage (112 mV at Full exLoad, TPS79330)

◆　 5-Pin SOT23 (DBV) and NanoStar Wafer Chip Scale (YEQ) Packages

3. PIN Description

PIN No. Symbol I/O Description

1

2

3

IN

GND

EN

I

- 54 -

Unregulated input to the device

Regulator ground

Enables or shuts down the device

4

BYPASS

O

further reduce regulator noise

5

6

FB

OUT

O

O Output of the regulator

feedback input voltage for the adjustable device

3.5.4 Function introduction to G690L263T71

1. Description

The G690/G691 are microprocessor (µP) supervisory circuits used to monitor the power supplies in µP 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.

The G691L has an open-drain output stage, while the G690 have push-pull outputs. The G691L’s open-drain RESET output requires a pull-up resistor that can be connected to a volta ge higher than VCC. The G690L have an active-low RESET output, while the G690H has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC, and the outputs are guaranteed to be in the correct logic state for VCC down to 1V.

Low supply current makes the G690/G691 ideal for use in portable equipment. The G690/G691 are available in 3-pin SOT-23 packages.

2. Features

◆ Precision Monitoring of +3V, +3.3V, and +5V Power-Supply Voltages

◆ Fully Specified Over Temperature

◆ Available in Three Output Configurations

Push-Pull RESET Output (G690L)

◆ 140ms min Power-On Reset Pulse Width

◆ 10µA Supply Current

◆ Guaranteed Reset Valid to VCC = +1V

◆ Power Supply Transient Immunity

◆ No External Components

◆　 3-Pin SOT-23 Packages

3. PIN Description

- 55 -

PIN No. Symbol I/O Description

1

2

3

/RESET

GND

VCC

O

I

P

RESET Signal Output

Ground

Power

3.5.5 Function introduction to TPS62200

1. Description

The TPS6220x devices are a family of high-efficiency synchronous step-down converters ideally suited for portable systems powered by 1-cell Li-Ion or 3-cell NiMH/NiCd batteries. The devices are also suitable to operate from a standard 3.3-V or 5-V voltage rail.

With an output voltage range of 6.0 V down to 0.7 V and up to 300 mA output current, the devices are ideal to power low voltage DSPs and processors used in PDAs, pocket PCs, and smart phones. Under nominal load current, the devices operate with a fixed switching frequency of typically 1 MHz. At light load currents, the part enters the power save mode operation; the switching frequency is reduced and the quiescent current is typically only 15 µA; therefore it achieves the highest efficiency over the entire load current range. The TPS6220x needs only three small external components. Together with the tiny SOT23 package, a minimum system solution size can be achieved. An advanced fast response voltage mode control scheme achieves superior line and load regulation with small ceramic input and output capacitors.

2. Features

◆ High Efficiency Synchronous Step-Down Converter With up to 95% Efficiency

◆ 2.5 V to 6.0 V Input Voltage Range

◆ Adjustable Output Voltage Range From 0.7 V to VI

◆ Fixed Output Voltage Options Available

◆ Up to 300 mA Output Current

◆ 1 MHz Fixed Frequency PWM Operation

◆ Highest Efficiency Over Wide Load Current Range Due to Power Save Mode

◆ 15-µA Typical Quiescent Current

◆ Soft Start

◆ 100% Duty Cycle Low-Dropout Operation

◆ Dynamic Output-Voltage Positioning

◆　 Available in a Tiny 5-Pin SOT23 Package

3. PIN Description

PIN No. Symbol I/O Description

1

VI

I

- 56 -

Supply voltage pin

2

GND

Ground

3

4

5

EN

FB

SW

I

I/O

The enable pin of the device

The feedback pin of the device

The switch pin

3.5.6 Function introduction to LM2713

1. Description

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

2. Features

◆ 350mA, 0.7W, internal switch

◆ Uses small surface mount components

◆ Adjustable output voltage up to 20V

◆ 2.2V to 7V input range

◆ Input undervoltage lockout

◆ 0.01µA shutdown current

◆　 Small 5-Lead SOT-23 package

3. PIN Description

PIN No. Symbol I/O Description

1 SW P Power Switch input.

2 GND Ground.

3 FB O Output voltage feedback input.

4

5

SHDN I Shutdown control input, active low.

VIN

I Analog and Power input.

3.5.7 Function introduction to TEA5767HN

1. Description

The TEA5767HN is a single-chip electronically tuned FM stereo radio for low-voltage application with fully

- 57 -

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. Features

◆ High sensitivity due to integrated low-noise RF input amplifier

◆ FM mixer for conversion to IF of the US/Europe (87.5 to 108 MHz) and Japanese (76 to 91MHz) FM

band

◆ Preset tuning to receive Japanese TV audio up to 108 MHz

◆ RF Automatic Gain Control (AGC) circuit

◆ LC tuner oscillator operating with low cost fixed chip inductors

◆ FM IF selectivity performed internally

◆ No external discriminator needed due to fully integrated FM demodulator

◆ Crystal reference frequency oscillator; the oscillator operates with a 32.768 kHz clock crystal or with a

13 MHz crystal and with an externally applied 6.5 MHz reference frequency

◆ PLL synthesizer tuning system

◆ I2C-bus and 3-wire bus, selectable via pin BUSMODE

◆ 7-bit IF counter output via the bus

◆ 4-bit level information output via the bus

◆ Soft mute

◆ Signal dependent mono to stereo blend [Stereo Noise Cancelling (SNC)]

◆ Signal dependent High Cut Control (HCC)

◆ Soft mute, SNC and HCC can be switched off via the bus

◆ Adjustment-free stereo decoder

◆ Autonomous search tuning function

◆ Standby mode

◆ Two software programmable ports

◆ Bus enable line to switch the bus input and output lines into 3-state mode

◆　 Automotive temperature range (at VCCA, VCC(VCO) and VCCD = 5 V).

3. PIN Description

PIN No. Symbol I/O Description

1 n.c. not connected

2 CPOUT O charge pump output of synthesizer PLL

3 VCOTANK1 O voltage controlled oscillator tuned circuit output 1

- 58 -

4 VCOTANK2 O voltage controlled oscillator tuned circuit output 2

5 VCC(VCO) P voltage controlled oscillator supply voltage

6 DGND digital ground

7 VCCD P digital supply voltage

8 DATA I/O bus data line input/output

9 CLOCK I bus clock line input

10 n.c. not connected

11 WRITE/READ I write/read control input for the 3-wire bus

12 BUSMODE I bus mode select input

13 BUSENABLE I bus enable input

14 SWPORT1 software programmable port 1

15 SWPORT2 software programmable port 2

16 XTAL1 I crystal oscillator input 1

17 XTAL2 I crystal oscillator input 2

18 PHASEFIL phase detector loop filter

19 PILFIL pilot detector low-pass filter

20 n.c. not connected

21 n.c. not connected

22 VAFL O left audio frequency output voltage

23 VAFR O right audio frequency output voltage

24 TMUTE I time constant for soft mute

25 MPXO O FM demodulator MPX signal output

26 Vref P reference voltage

27 TIFC I time constant for IF centre adjust

28 LIMDEC1 I decoupling IF limiter 1

29 LIMDEC2 I decoupling IF limiter 2

30 n.c. not connected

31 n.c. not connected

32 Igain I gain control current for IF filter

33 AGND analog ground

34 VCCA P analog supply voltage

35 RFI1 I RF input 1

36 RFGND RF ground

- 59 -

37 RFI2 I RF input 2

38 TAGC time constant RF AGC

39 LOOPSW switch output of synthesizer PLL loop filter

40 n.c.

not connected

3.5.8 Function introduction to ISL6294IRZ

1. Description

The ISL6294 is a cost-effective, fully integrated high input voltage single-cell Li-ion battery charger. The charger uses a CC/CV charge profile required by Li-ion batteries. The charger accepts an input voltage up to 28V but is disabled when the input voltage exceeds the OVP threshold, typically 6.8V, to prevent excessive power dissipation. The 28V rating eliminates the overvoltage protection circuit required in a low input voltage charger.

The charge current and the end-of-charge (EOC) current are programmable with external resistors. When the battery voltage is lower than typically 2.55V, the charger preconditions the battery with typically 20% of the programmed charge current. When the charge current reduces to the programmable EOC current level during the CV charge phase, an EOC indication is provided by the CHG pin, which is an open-drain output. An internal thermal foldback function protects the charger from any thermal failure.

Two indication pins (PPR and CHG) allow simple interface to a microprocessor or LEDs. When no adapter is attached or when disabled, the charger draws less than 1µA leakage current from the battery.

2. Features

◆ Complete Charger for Single-Cell Li-ion/Polymer Batteries

◆ Integrated Pass Element and Current Sensor

◆ No External Blocking Diode Required

◆ Low Component Count and Cost

◆ 1% Voltage Accuracy

◆ Programmable Charge Current

◆ Programmable End-of-Charge Current

◆ Charge Current Thermal Foldback for Thermal Protection

◆ Trickle Charge for Fully Discharged Batteries

◆ 28V Maximum Voltage for the Power Input

◆ Power Presence and Charge Indications

◆ Less Than 1µA Leakage Current off the Battery When No Input Power Attached or Charger Disabled

◆　 Ambient Temperature Range: -40°C to 85°C

- 60 -

3. PIN Description

PIN No. Symbol I/O Description

1

2

3

4

5

6

7

8

VIN

PPR

CHG

EN

BAT

IREF

IMIN

GND

P

I

O

I

Power input

Open-drain power presence indication

Open-drain charge indication pin

Enable input

Charger output pin

Charge-current program and monitoring pin

End-of-charge (EOC) current program pin

System ground

3.5.9 Function introduction to PIC10F200T

1. Description

The PIC10F200/202/204/206 devices from Microchip Technology are low-cost, high-performance, 8-bit, fullystatic, Flash-based CMOS microcontrollers. They employ a RISC architecture with only 33 single-word/ single-cycle instructions. All instructions are single cycle (1 µs) except for program branches, which take two cycles. The PIC10F200/202/204/206 devices deliver performance in an order of magnitude higher than their competitors in the same price category. The 12-bit wide instructions are highly symmetrical, resulting in a typical 2:1 code compression over other 8-bit microcontrollers in its class. The easy to use and easy to remember instruction set reduces development time significantly.

2. Features

◆ Only 33 single-word instructions to learn

◆ All single-cycle instructions except for program branches, which are two-cycle

◆ 12-bit wide instructions

◆ 2-level deep hardware stack

◆ Direct, Indirect and Relative Addressing modes for data and instructions

◆ 8-bit wide data path

◆ 8 Special Function Hardware registers

◆ Operating speed:

- 4 MHz internal clock

- 1 s instruction cycle？

◆ Operating Current:

- < 350 A @ 2V, 4 MHz？

◆ Standby Current:

- 61 -

- 100 nA @ 2V, typical

◆ Low-power, high-speed Flash technology:

- 100,000 Flash endurance

- > 40 year retention

◆ Fully static design

◆ Wide operating voltage range: 2.0V to 5.5V

◆ Wide temperature range:

- Industrial: -40 C to +85 C？？

- Extended: -40 C to +125 C？？

◆ 4 I/O pins:

- 3 I/O pins with individual direction control

- 1 input only pin

- High current sink/source for direct LED drive

- Wake-on-change

- Weak pull-ups

◆　 8-bit real-time clock/counter (TMR0) with 8-bit programmable prescaler

3.5.10 Function introduction to PQ1X281M2ZP

1. Description

The PQ1Xxx1M2ZP Series are Low Output Current, Compact Surface Mount Type Low Power-Loss Voltage Regulators.

2. Features

◆ Compact surface mount package (2.9×1.6×1.1mm)

◆ Low power-loss (Dropout voltage: TYP. 0.11 V/MAX. 0.26V at IO=60mA)

◆ Also compatible ceramic capacitors because of suppressing oscillation level

◆ High ripple rejection (TYP. 70dB)

◆ Low dissipation current (Dissipation current at no load: TYP. 150µA)

◆ Built-in ON/OFF control function (Dissipation current at OFF-state: MAX. 1µA)

◆ Built-in overcurrent and overheat protection functions

*It is available for every 0.1V of output voltage (1.3V to 5.0V)

3. PIN Description

PIN No. Symbol I/O Description

1

Vin

I

- 62 -

DC input

2

GND

Ground

3

4

5

Vc

Nr

Vo

I

O

3.5.11 Function introduction to SI1912

1. Description

The SI1912 is a Dual N-Channel 20-V (D-S) MOSFET.

2. Features

◆ TrenchFET Power MOSFETS: 1.8-V Rated

◆ ESD Protected: 2000 V

◆　 Thermally Enhanced SC-70 Package

3. PIN Description

ON/OFF control terminal

Noise reduction

DC Output

- 63 -

Chapter Four

Assembly and Disassembly Process

In order to get to know the structure of X31 (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 grounded effectively and articles, such as nippers must be removed static before using!

4.1 Disassembly process of the player

1. Use electric screwdriver or “+”-shaped screwdriver to fix 3 bottom casing screws (A, B, C).

2. Use electric screwdriver or “+”-shaped screwdriver to fix 4 main board screws (A, B).

- 64 -

3. Take down main board components and pay attention not to damage headphone jack (A).

4. Open display screen socket (A) and take down display screen.

4.2 Assembly process for the player

1. Install 6 buttons (A, B).

- 65 -

2. Put aluminum decorating plate in position A.

3. Install display screen and press socket (A) tightly.

4. Install main board components into the casing and pay attention not to damage

headphone jack.

- 66 -

5. Use electric screwdriver or “+”-shaped screwdriver to fix4 main board screws (A, B).

6. Use electric screwdriver or “+”-shaped screwdriver to fix3 bottom casing screws(A, B, C).

- 67 -

Chapter Cinque

PCB board & Circuit diagram

Section One PCB board

1. Surface layer of PCB Board

- 68 -

2. Bottom layer of PCB Board

- 69 -

Section Two circuit diagram

VCC33

U2 G690L263T71/R3111N252CT1

VCC

USB_VBUS3

GND

RESET

2

- 70 -

VCC33

/STATUS2

CHGEN2

3

P_GND

1

USB_VBUS

C11

R17

105 Y5V

47K

P_GND

R5 10K *

/RESET 2,3

C4 SFI0402-050E100NP

P_GND

VBUS

P_GND

U4 ISL6294 DFN8

1 2 3 4 5

BAT

IN

IREF

PPR CHG

IMIN

EN GND

P_GND

R8 1K

8 7 6

D1 BAT43WS

R9 100Ω

R18 510K

P_GND

G

R20

120K±1%

P_VDD

9mA

P_GND

Q2 SI2305DS SOT23

D S

BAT+

C13 105 Y5V

P_GND

C7 106/X5R

R2 68K

14mA

C1 106/X5R

1 2

BAT-

U1

1 2 3 4

TPS79301 SOT23-6

P_GND

EN

P_GND

CN1

BAT

VIN

VOUT GND EN BYPASS

C6 102 X7R

FB

EN

P_GND

6 5

R3 C5 103 X7R

D3

1N4148WS

C76

SFI0402-050E100NP

20K±1%

P_GND

U3

1

VI

2

GND

3 4

EN FB

TPS62200/FAN5307* SOT23-5

R7 47K

D/PLAY

START

OFF

R1 33K±1%

SW

USB_VBUS

P_GND

D4 1N4148WS

C2 22PF NPO

L1 CDRH2D11/HP-100

5

3

BAT+

R10

100K

R13 1.8K +/-1%

CLK

R4 300K±1%

R6 120K±1%

P_GND

C3 106/X5R

P_GND

C8 47PF NPO

C10 101 NPO

U5 PIC10F200

1 2 3 4

R11 10K +/-1%

R12 1K +/-1%

VCC33

VCC18

GP0

GP3

VSS

VDD

GP1 GP2

GP3

VCC33

C9 106/X5R

VCC18

6 5

P_GND

EN

R14 47K

PROG

C16 104 X5R

D_GND

A_GND

GP3

BAT+

C15 104 X5R

P_GND

P_GND P_GND

- 71 -

FM_OUTR FM_OUTL

KEY_SCAN_23 KEY_SCAN_13

HP_VOUTR3

HP_VOUTL3

L20 601/1005 L19 601/1005

USB_DP3 USB_DM3 USB_DET3

IIC_SCL4 IIC_SDA4

C22 22PF NPO

D_GND

R27 100K±1%

EN

R28 180K±1%

C39 104 X5R

D_GND

C31 220UF/4V

C32 220UF/4V

C33

C35 105 Y5V

R35 R32 IC!

、靠近

VCC33

Q6 MMST3906

R33 10K

R36

R37

1M *

1.5K±1%

IIC_SCL IIC_SDA

X1

12MHz

C40 104 X5R C34 104 X5R

105 Y5V

R35 1M

FM_3V3

R58

R56

10K

D_GND

R32 1M

R42

1.5K±1% *

C23 22PF NPO

C27 332 X7R

R29 10R R30 10R

ADC_MIC3

LCD_WR3 LCD_RD3 LCD_DB73 LCD_DB63 LCD_DB53 LCD_DB43 LCD_DB33 LCD_DB23 LCD_DB13 LCD_DB03 LCD_CS3 LCD_D/C3

R44 12K±1% *

D_GND

R34 33K R26 33K

C28 332 X7R

CHGEN3

EN23

R39 100K

/RESET1,3

VCC33

VCC18

XTAL_VDDA18

HP_VDDA33

ADC_VREFP

ADC-VREFP

HP-VDDA33A

HP-VDDA33B

USB_GNDA

USB_VSSA_TERM

USB_VSSA_REF

R17

T16

R16

DAC_VREFP

DAC_VDDA33

DAC-VREFP

DAC-VDDDA33

MPMC

UART

GPIO

DC/DC

ADC_GNDA

ADC_VREFN

DAC_VREFN

V2U1V1

M1

C49

106 Y5V

ADC10B_VDDA33

V10

SPDIF-VDDA33

XTALL-VDDA18

XTALH-VDDA18

ADC-10B-VDDA33

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

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

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

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

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_VREF

ADC_VCOM

ADC_MIC_LNA

T3

T2

GPIO3 GPIO2 GPIO1 GPIO0

C50 104 X5R

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

C51 106 Y5V

MPMC_AD7 MPMC_AD6 MPMC_AD5 MPMC_AD4 MPMC_AD3 MPMC_AD2 MPMC_AD1 MPMC_AD0

R41 0R

D_GND

R82 0R *

C52 104 X5R

VCC33

/STATUS 1

PHONE_SEL 3

LCD_RESET 3

ALE CLE

MENU

/RE

/WE

PLAY/PAUSE 3

R43 0R *

OFF 1

P_GND

C53

102 X7R

MENU

DFU

C68 SFI0402-050E100NP

VCC33

C36 106/X5R

4.6mA

P_GND

ADC_VDDA33

VDD_MPMC

VDDI

VDD_I/O

D_GND

U6 PNX0101

R18

M16

N18H1V11

V16

V15E1V5

V14

J18

A16A7V18

VDDI1

VDDI2

VDDI3

VDDE1

VDDE2

VDDE3

VDDE4

VDDE5

VDDE6

FLASH-VDD-HV

DCDC-VOUTT18

DCDC-VOUT33A

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

DCDC_VSS1

P18

DCDC-VOUT33B

DCDC_VSS2

DCDC_GND

N16

L16

OSCIALLATORS

SPDIF

10-BIT ADC

DAC

ADC

LCD INTERFACE

MEMORY CARD INTERFACE

USB INTERFACE

DA INTERFACE

JTAG

IIC MASTER INTERFACE

RESET

DCDC_CLEAN

VSSI1

VSSI2

M18G1V12

V17F1V6

D_GND

VSSI3

VSSE1

VSSE2

VSSE3

V13

VSSE4

VSSE5

H18

A15

AUDIO PLAYER SYMPHONY

VSSE6

XTAL_VSSA

A6

T9V8T11

T10

V9

V7

T8

T12

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

/WP

J3

J1

J2 H3

/CE

G3 H2

T15 U17 T17 U14 P16

H17 G17 G16

F16 G18

F18

F17

T13

V4

U12

T5

U13

U4

H16

J17

T14

ADC_VDDA18

USB_VDDA33

USB_VDDA18

U18

U15

U16U3V3U2R1R2L1L2U9U8U11

ADC-VDDA33

ADC-VDDA18

USB-VDDDA33

USB-VDD18-BG

USB-VDDA18-PLL

USB-VDDA33-DRV

HP_GNDAA

HP_GNDAB

STAL_GNDA

SPDIF_GNDA

ADC10B_GNDA

P2

P1

U10

32.2mA

C19

C18

106 Y5V

1.7mA

1.1mA

C25

C24

106 Y5V

D_GND

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

104 X5R *

1

VI

VOUT

2

GND

3 4

EN BYPASS

U7

C81

C12

104 X5R*

L27 601 *

L11 601 L6 601

L12 601

C29 106 Y5V

5

C42 104 X5R

D_GND

L2 601

L26 601 *

L3 601 L4 601

C46 106/X5R

D_GND

VDDI

USB_VDDA18

ADC_VDDA18 XTAL_VDDA18

VCC33

C20 104 X5R

C26 104 X5R

L7 601

DAC_V33

L13 601

C47 104 X5R

C14

C21

104 X5R*

104 X5R

USB_VDDA33

VDD_MPMC VDD_I/O

ADC10B_VDDA33

C82

C38

C37 104 X5R

D_GND

R31 10R

L8 18R L9 601 L10 10R

R38 100K

FLASH3V3

D_GND

D_GND D_GND

104 X5R *

104 X5R

D_GND

ADC_VDDA33

C30 104 X5R

ADC_VREFP

C41 104 X5R

C44

C43

104 X5R

106 Y5V

K9F2G08U0M-YCBO TSOP

U8

1

NC

2

NC

3

NC

4

NC

5

NC

6

GND

7

/RE

CLE ALE /WE /WP MPMC_AD1

R48 100K

D_GND

RY/BY

8

RE

/CE

9

CE

10

NC

11

NC

12

Vcc

13

Vss

14

NC

15

NC

16

CLE

17

ALE

18

WE

19

WP

20

NC

21

NC

22

NC

23

NC

24

NC

48

NC

47

NC

46

NC

45

NC

44

I/O8

43

I/O7

42

I/O6

41

I/O5

40

NC

39

NC

38

NC

37

Vcc

36

Vss

35

NC

34

NC

33

NC

32

I/O4

31

I/O3

30

I/O2

29

I/O1

28

NC

27

NC

26

NC

25

NC

C45 104 X5R

DAC_VREFP HP_VDDA33 DAC_VDDA33

MPMC_AD7 MPMC_AD6 MPMC_AD5 MPMC_AD4

FLASH3V3

D_GND

MPMC_AD3 MPMC_AD2

MPMC_AD0

C48 104 X5R

475/X5R/6.3V

U9

L15 601/1608 DCR≤350mΩ

4 2 5 6

PHONOJACK STEREO-15_6 CN2

3 1

FM_ANT4

FM_ANT

L16 601

L17

601/1608 DCR≤350mΩ

RCLAMP0504F/SC-70 6L

- 72 -

L24

CDRH3D16-4R7

5

VIN

4

EN

TPS61040/LM2703

GND

VCC33

SW

FB

P_VDD

L23

601

4mA

VCC33

C65

R69 100K

R74 0R

EN2

2

L22 601

MBR0520/SOD123

1

2

3

U11

D8

LCD_3V3

R70

240K±1%

R76

27K±1%

VOLED

L30

0R

GND

FM_ANT

C63 22PF NPO

OUT_L

Q8

SS8550LT

106/25V/1206

R40 1K

C67

16V/104/X5R

C64

OUT_R

D7

21

C60

103 X7R

NC

1 623 4

VCOMH

VCC

20515

R66

VOLED

2M

LCD_DB72LCD_DB3

C54

5

USB_VBUS1

CN5

????

D5

2

LCD_DB42LCD_DB0

LCD_DB62LCD_DB5

6PF*

2

LCD_DB1

LCD_DB2

C55 6PF*

D/C#

WR#

RD#D0D1D2D3D4D6D7IREF

2

LCD_WR2LCD_CS

LCD_RD

LCD_D/C

RES#

CS#

R72

0R

LCD_RESET2

L

R

L18 601/1608 DCR≤350mΩ

R55 18R

T1

SDCW2012-2-900T *

1 3

2 4

R57 18R

R59 100K

R77

C69

180K±1%

104 X5R

GND

VDD

BS1

BS2

12346789101112131416171819

R

GND

LCD_3V3

R46 4.7K

R47 4.7K

2

C62

104 X5R

Si1912DL SOT-363/NT4401

6

D1

5

G2

USB_DET 2

USB_DM 2

USB_DP 2

ADC_VDDA33

1

S1

2

G1

34

D2S2

Q9

MMST3904

R62 100K

R45 470K

C58

106 X5R

MIC1

MICROPHONE

U10

Si1912DL SOT-363/NT4401

1

S1

2

G1

3 4

D2 S2

R52 10k

R67

2.2K

C61

ADC_MIC

104 X5R

D1

G2

6

5

PHONE_SEL 2

MENU

ADC_MIC 2

D_GND

DFU

HP_VOUTL 2

HP_VOUTR 2

R50

R51

1K

VCC33

S2

MENU

R24 1K

R16 47K

Q3

SS8550LT

R22 0R

R65 1k

S1

S4

D_GND

PLAY/PAUSE2

START1

D_GND

C72 104 X5R

SFI0402-050E100NP

D_GND

R73 1K

S5

VOL-

C77 SFI0402-050E100NP

P_GND

C73

R21 51K

D_GND

VCC33

D_GND

S3

R71 1K

C66 104 X5R

VCC33

R68

S6

START/PLAY/PAUSE

D_GND

VCC33

D_GND

C71 SFI0402-050E100NP

100k

D9 1N4148WS

L25 601/1005

R19 1K

C59 104 X5R

KEY_SCAN_2 2

C70 SFI0402-050E100NP

D_GND

P_GND

KEY_SCAN_1 2

FM_3V3

FC1 101 NPO

FM_ANT3

FM_3V3

FR4 22R

- 73 -

FC13

104 X5R

dandu

SGND

FM_ANT

O603CS

FL2 33nH±2%

MURATA COILCRAFT OR TOKO SMD LLQ1608-A33NG

FC11 103 X7R

O603CS

FL3 33nH±2%

MURATA COILCRAFT OR TOKO SMD LLQ1608-A33NG

O603CS

MURATA COILCRAFT TOKO SMD

LLQ1608-AR10G

FD1

BB202

FD2

BB202

FM_3V3

FR7 22R

D-GND

FL1 120nH/±2%

FC19 104 X5R

FC2 27PF NPO

FC4 47PF NPO

FR5 100K

D-GND

SGND

FR3 10K

FC10 393 X5R

FC3 472 X7R

40

1

N.C

2

CPOP

3

VCOT1

4

VCOT2

5

VCOVCC

6

DGND

7

DVCC

8

DATA

9

CLOCK

10

N.C

111213141516171819

FM_3V3

D-GND

FR61 601/1005

FR60 601/1005

N.C

RFI2

TCAGC

LOOPSW

TEA5767HN

NECTAR-I

W/R

BUSM

BUSEN

SWP1

RFI1

AVCC

RFGND

SWP2

XTAL1

XTAL2

IIC_SCL 2

IIC_SDA 2

313233343536373839

N.C

IFGAI

AGND

TMUTE

PDLF

PHLF

N.C

20

FC5 475/X5R/6.3V

FR2 18K±1%

FU1

30

N.C

29

DIFL2

28

DIFL1

27

TCIFC

26

VREF

25

MPXO

24 23

RAVO

22

LAVO

21

N.C

XT1

32.768KHz

OR 13MHz

CRYSTAL

FR1 10R

SGND

D-GND

FC14 102 X7R

D-GND

FC15 22PF NPO

FC6 473 X5R

FC7 473 X5R

FC8 473 X5R

FC9 333 X5R

FC12 333 X5R

FM_OUTR FM_OUTL

FR6 33K

FC16 223 X7R

SGND

FC17 223 X7R

SGND

D-GND SGND

FC18 102 X7R

GND

it is negative battery terminal!

FL4 0R

DAC_V33

13mA

SGND

L21 10UH/2012

C56 106 Y5V

D_GND

FM_3V3

C57 104 X5R

Chapter six BOM List

MATERIAL

CODE

X31M(RU) BLACK (512M)

BATTERY PROTECT BOARD 　 5448351

0090354 SMD RESISTOR 1/16W 470O±5% 0402 R1

0090368 SMD RESISTOR 1/16W 2K±5% 0402 R2

0310480 SMD CAPACITOR 10V 104±10% X5R 0402

0310790 SMD CAPACITOR

0790065

0790090

0882570 IC S-8261AANMD-G2N-T2 SOT23-6 U1

1633195 PCB EX31-1

X31M(RU) BLACK (512M)

MAIN BOARD 5449000

0090324 SMD RESISTOR 1/16W 0O±5% 0402 FL4,L30,R22,R43,R72,R74,R82

MATERIAL NAME SPECIFICATIONS LOCATION

C1,C2,C3　　　　①

10V 104±20％ X5R 0402 C1,C2,C3　　　　①

SMD FIELD EFFECT TRANSISTOR

ECH8601 TSSOP

ECH8601R TSSOP

U2　　　　②

0090326 SMD RESISTOR 1/16W 10O±5% 0402 FR1,L10,R29,R30,R31

0090644 SMD RESISTOR 1/16W 18O±5% 0402 L8

0090447 SMD RESISTOR 1/16W 22O±5% 0402 FR7,FR4

0090339 SMD RESISTOR 1/16W 100O±5% 0402 R9

0090362 SMD RESISTOR 1/16W 1K±5% 0402 R8,R19,R24,R40,R50,R51,R65,R71,R73

0090369 SMD RESISTOR 1/16W 2.2K±5% 0402 R67

0090377 SMD RESISTOR 1/16W 4.7K±5% 0402 R47,R46

0090385 SMD RESISTOR 1/16W 10K±5% 0402 FR3,R52,R56,R58

0090390 SMD RESISTOR 1/16W 18K±5% 0402 FR2

0090396 SMD RESISTOR 1/16W 33K±5% 0402 FR6,R26,R34

0090400 SMD RESISTOR 1/16W 47K±5% 0402 R7,R14,R16,R17

0090401 SMD RESISTOR 1/16W 51K±5% 0402 R21

0090404 SMD RESISTOR 1/16W 68K±5% 0402 R2

0090408 SMD RESISTOR 1/16W 100K±5% 0402 FR5,R10,R38,R39,R48,R59,R62,R68,R69

0090425 SMD RESISTOR 1/16W 470K±5% 0402 R45

0090433 SMD RESISTOR 1/16W 1MO±5% 0402 R35,R32 ,R36

0090436 SMD RESISTOR 1/16W 2MO±5% 0402 R66

- 74 -

MATERIAL

CODE

MATERIAL NAME SPECIFICATIONS LOCATION

0090639 PRECISION SMD RESISTOR 1/16W 1.5K±1% 0402 R42

0090652 PRECISION SMD RESISTOR 1/16W 1K±1% 0402 R12

0090740 PRECISION SMD RESISTOR 1/16W 1.8K±1% 0402 R13

0090462 PRECISION SMD RESISTOR 1/16W 10K±1% 0402 R11

0090453 PRECISION SMD RESISTOR 1/16W 12K±1% 0402 R44

0090672 PRECISION SMD RESISTOR 1/16W 20K±1% 0402 R3

0090671 PRECISION SMD RESISTOR 1/16W 33K±1% 0402 R1

0090485 PRECISION SMD RESISTOR 1/16W 27K±1% 0402 R76

0090509 PRECISION SMD RESISTOR 1/16W 100K±1% 0402 R27

0090681 PRECISION SMD RESISTOR 1/16W 120K±1% 0402 R6,R20

0090645 PRECISION SMD RESISTOR 1/16W 180K±1% 0402 R28,R77

0090682 PRECISION SMD RESISTOR 1/16W 300K±1% 0402 R4

0090687 PRECISION SMD RESISTOR 1/16W 240K±1% 0402 R70

0090667 PRECISION SMD RESISTOR 1/16W 510K±1% 0402 R18

1030029

SMD PRESS SENSITIVITY RESISTOR

SFI0402-050E100NP C4,C68,C70,C71,C73,C76,C77

0310416 SMD CAPACITOR 50V 22P±5% NPO 0402 C2,C22,C23,C63,FC15

0310418 SMD CAPACITOR 50V 27P±5% NPO 0402 FC2

0310424 SMD CAPACITOR 50V 47P±5% NPO 0402 C8,FC4

0310432 SMD CAPACITOR 50V 101±5% NPO 0402 C10,FC1

0310704 SMD CAPACITOR 25V 102±10% X7R 0402 C53,FC14,FC18

0310705 SMD CAPACITOR 25V 332±10% X7R 0402 C27,C28

0310706 SMD CAPACITOR 25V 472±10% X7R 0402 FC3

0310453 SMD CAPACITOR 25V 103±10% X7R 0402 C5,FC11,C6

0310455 SMD CAPACITOR 16V 223±10% X7R 0402 FC16,FC17

0310710 SMD CAPACITOR 16V 333±10% X5R 0402 FC12,FC9

0310711 SMD CAPACITOR 10V 393±10% X5R 0402 FC10

0310712 SMD CAPACITOR 10V 473±10% X5R 0402 FC6,FC7,FC8

FC13,C15,C16,FC19,C20,C21,C26,C30,C34,C37,C

0310480 SMD CAPACITOR 10V 104±10% X5R 0402

38,C39,C40,C41,C42,C44,C45,C47,C48,C50,C52,C 57,C59,C61,C62,C66,C69,C72 ,C12　　　　③

FC13,C15,C16,FC19,C20,C21,C26,C30,C34,C37,C

0310790 SMD CAPACITOR

10V 104±20％ X5R 0402

38,C39,C40,C41,C42,C44,C45,C47,C48,C50,C52,C 57,C59,C61,C62,C66,C69,C72 ,C12　　　　③

0310753 SMD CAPACITOR 16V 104±20% X5R 0402 C67,C60

- 75 -

MATERIAL

CODE

MATERIAL NAME SPECIFICATIONS LOCATION

0310216 SMD CAPACITOR 10V 105 +80%-20% 0603 C11,C13,C33,C35

0310717 SMD CAPACITOR 6.3V 475±20% X5R 0603 C65,FC5

0310486 SMD CAPACITOR 6.3V 106±20% X5R 0805 C1,C3,C7,C9,C36,C46,C58

0310389 SMD CAPACITOR 10V 106 +80%-20% Y5V 0805 C18,C19,C24,C25,C29,C43,C49,C51,C56

0310752 SMD CAPACITOR 25V 106±10% X5R 1206 C64

0310736 SMD TANTALUMCAPACITOR 4V 220uF±20% 3528(B) C31,C32

0390142 SMD MAGNETIC BEADS FCM1608-601T02 L15,L17,L18,L16

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

L19,L20,L25,FR60,FR61,L2,L3,L4,L6,L7,L9,L11,L12, L13,L22,L23 ,L26,L27

0390044 SMD INDUCTOR 10UH±10% 2012 L21

0390397 SMD CORES INDUCTOR 10uH±20% CDRH2D11/HP L1

0390221

0390398

SMD COIL THREAD INDUCTOR SMD COIL THREAD INDUCTOR

33nH±2% 1608 FL2,FL3

120nH±2% 1608 FL1

0390432 SMD CORES INDUCTOR 4.7uH±30% CDRH2D11/HP L24

1090080 ESD ELEMENT RCLAMP0504F SC70-6L

1090084 ESD ELEMENT PLR0504F-P SC70-6L

D7　　　　④

0700154 SMD TRIODE 1N4148WS SOD-323 D3,D4,D9

0680077 SMD SCHOTTKY DIODE MBR0520 SOD123 D8

0680074 SMD SCHOTTKY DIODE BAT43WS SOD-323 D1

0700115

SMD TRANSFIGURATION DIODE

BB202 FD1,FD2

0780298 SMD TRIODE MMST3904 SOD-323 Q9

0780300 SMD TRIODE SS8550LT SOD-323 Q8,Q3

0790041

0790068

0790070

SMD FIELD EFFECT TRANSISTOR

SI2305DS SOT-23 Q2

SI1912 SOT363

NTJD4401N SOT363

U9,U10　　　　⑤

1000039 COMMON MODE FILTER SDCW2012-2-900T NT2012 T1

0882475 IC TPS79301 SOT23-6

0882668 IC TPS79333DBVR SOT23-5

U1　　　　⑥

0882388 IC TEA5767HN HVQFN FU1

0882481 IC G690L263T71 SOT23-3 U2

0882476 IC TPS62200 SOT23-5 U3

0882851 IC ISL6294IRZ DFN U4

- 76 -

MATERIAL

CODE

MATERIAL NAME SPECIFICATIONS LOCATION

0882853 IC PIC10F200T-I/OTG SOT-23 U5

0882852 IC PNX0102AET/N102 TFBGA U6

0882480 IC PQ1X281M2ZP SOT23-5

0882629 IC TPS793285DBVR SOT23-5

0882882 IC K9F4G08U0M-PCB0 TSOP

0882675 IC K9K4G08U0M-PCBO TSOP

0882619 IC K9K4G08U0M-YCBO TSOP

0883070 IC K9F4G08U0A-YCBO TSOP

0883101 IC K9K4G08U0A-YCBO TSOP

0882565 IC LM2703 SOT-23-5

0882999 IC FAN5331 SOT23-5

U7　　　　⑦

U8　　　　⑧

U11　　　　⑨

1340099 SMD LIGHT TOUCH SWITCH SKRELGE010 S1,S2,S3,S4,S5,S6

1980074 SMDEARPHONE SOCKET 2SJ-0386-001 CN2

1940282 CABLE SOCKET

21P 0.5mm SMD,SUBMIT MEET WITH CLASP

CN5

1633172 PCB 2X31P-1

SMD CMETAL OXIDE FILM

0960279

RESISTORSTAL

32.768KHz±20ppm SSPT6 12.5P XT1

OSCILLATOR SMD CMETAL OXIDE FILM

0960284

RESISTORSTAL

12MHz±30ppm 5032/4 20P X1

OSCILLATOR

- 77 -

BBK X31 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual