4.3 Disassembly and assembly process for OLED screen
4.4 Disassembly and assembly process for USB jack
Chapter Cinque PCB board & Circuit diagram
38
49
51
52
53
53
54
57
57
59
59
59
60
Section One PCB board
Section Two circuit diagram
Chapter six BOM List
60
62
65
Page 5
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
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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.
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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
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Chapter Two
Functions and Operation Instructions
2.1 USAGE INTRODUCTION
2.1.1 FUNCTIONS AND FEATURES
#Philips PNX0101 audio decode chip
Adopt famous Plilips PNX0101 audio decode chip, special for Hi-Fi MP3 player, forcefully making
up audio signal loss when compressing MP3 to revert audio signal better.
#Play MP3/WMA/WAV files
Support 16kbps ~ 320kbps MP3 file and 8kbps ~ 192kbps WMA file.
#Mobile storage function
Capable of downloading files from Windows resource manager.
#FM tuning
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 (full speed)
USB2.0 full speed data transmission.
#Support firmware upgrading function
Support upgrading function. You may add new function to the built-in program of this player
conveniently.
2.1.2 BUTTONS AND JACKS ILLUSTRATION
9
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
#Press in tuning PRESET mode
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
select channel
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Page 9
#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
5
6
Press when playing
#
#Press in playback interface or when tuning
#Press in "My EQ"
#Press "-" button when browsing file
#Press "+" button for long when tuning
7
USB jack
8
Headphone jack
9
MIC: microphone
2.1.3 MAIN MENU ILLUSTRATION
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
ast 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
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Page 10
2.1.5 TUNING INTERFACE
ILLUSTRATION
1
1
PRESET mode (normal receiving)
Battery capacity
2
Frequency of the current radio station
3
4
PRESET channel display
5
SCAN mode (scanning)
2
3
4
5
2.1.6 RECORDING INTERFACE
ILLUSTRATION
5
1
3. After installation finishes, restart the computer
and you may use the mobile storage function
normally.
Shown as the following figure:
2
3
1
Name of recorded file
Battery capacity
2
Time that has been recorded
3
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.
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
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In any case, press button for long to
enter "Main Menu". Music fileand recording file
are separately saved in the first two items of
main menu, "My Music" and "My Voice". Press
/
button to select upward or downward
and then press button to enter files browsing.
are only for the current track. After fast
backward/forward to the beginning/ending of
track, it switches into normal playback
automatically
#ADJUST VOLUME
PRESS
FOR LONG
PRESS
PRESS
display of adjusting volume in music playback
#CANCEL FILE
interface is shown as follows:
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.
#Music playback will be paused when browsing
PRESS
PRESS
#In some operating system (such as complex
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.
#3FF and FB
When playing, pressing button for long
may realize fast forward.
/
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.
certain segment repeatedly, please use A-B
repeat function.Press button for the first time
to select the beginning point that you desire
PRESS
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.
and press button for long to exit recording
PRESS
FOR LONG
and then make files.
.
CAUTION:
Fast forward and fast backward operation
When playing or tuning or tuning, pressing
button or for long way adjust volume. The
/
CAUTION:
file.
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 ,
2.2.6 A-B REPEAT FUNCTION
When playing, if you want to listen to a
PRESSPRESSPRESS
2.2.7 RECORDING
When recording, press button to pause
When playing, pressing button for long
may realize fast backward.
PRESS
FOR LONG
PRESS
PRESS
FOR LONG
CAUTION:#To avoid sudden power-off
when recording, you cannot record when in low
battery and when disc is fully written.
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Page 12
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
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.
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:
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
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
2.3.2 PLAY MODE
PRESS
#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
PRESS
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Page 13
The playback symbol displays on playback
interface is shown as follows:
play according to track sequence.
random play any one track.
play the track edited in program list.
browse play each track for 10 seconds.
repeat play single track.
repeat play all tracks.
repeat play all tracks in this Folder.
CAUTION:
#Play mode is defaulted to "Normal" each time
when power on.
#Files in "My Voice" only support sequence
playback.
#When playing files in "My Voice", there is no
"Play mode" item.
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.
PRESS
PRESS
CAUTION:
#It is defaulted to be invalid each time when
power on.
#Timing power-on time is a rough time, and may
have difference.
2.3.5 PLAYLIST
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
PRESSPRESSPRESS
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
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
2.3.7 LOCK SETUP
Entering this menu may open or close auto
buttons lock function.
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Page 14
If “Lock Enable” is selected and not any
button is operated during 30 seconds, all button
functions will be locked automatically.
Three kinds of recording quality adopt IMA-
ADPCM format coding.
PRESS
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
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
2.3.10 ADVANCED
#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
PRESS
#Default
PRESS
PRESS
If you want to restore MP3 PLAYER to
factory setup state (data and song files cannot
be cancelled), you may select “Load Default”.
After dialogue box pops up, select “YES” , press
button to confirm and then exit to restore to
default state. Select “NO” or press button to
cancel.
CAUTION:
Restore to "Default" state is effective only
when power on again.
#System Info
You may find information of firmware
version, total disc capacity and left disc capacity.
In system information menu, 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
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.
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_X23RU.
ebn" and "X23RU_Resource.bin", copy the two
files into MP3 PLAYER at the same time, and
then power on again.
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Page 15
Find "Upgrade" item in "ADVANCED" of
Model
Audio decode chip
Continuous playback
time
Dimensions/weight
Audio SNR
Theadphone ou
Frequency range
FM tuning range
Working temperature
Files supported
90dB
The longest time is about 15 hours
80.2mm28.5mm14.5mm about 28.5g(without battery),40g(with battery)
The PNX0101 (ARM-based Solid State Audio IC) is an IC based on an embedded RISC processor. The
device is designed for hand -held Solid State Audio applicat ions like portable MP3 players. The high level of
integration, low power consumption and high processor performances make the PNX0101 very suitable for
portable hand-held devices.
The PNX0101 is based on the powerful ARM7TDMI CPU core, which is a full 32 -bit RISC processor with
8 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
– This hold for running the decoder on the ARM
– The decoders on the low-power DSP, are running from mask ROM
◆ FM Radio input and control support
Embedded program flash for easy upgradi ng and increased program security◆
Support for Philips LifeVibes◆
Small footprint package TBGA180 10x10mm 0.5pitch◆
2.2 Hardware Features
ARM7TDMI + 8kByte cache◆
Embedded 64kByte RAM and 32 kByte ROM◆
Integrated embedded program Flas h (4M bit)◆
Ultra low power Audio DSP for support of Philips LifeVibe◆sTM audio enhancement algorithms (storede
in teh DSP’s
TM
audio enhancement algorithms
ROM).
External memory support: Nand Flash/Compact flash/MMC/SMC/SRAM/ROM/SDRAM◆
Integrated MCI interface◆
Integrated USB 2.0 FS compliant slave interface (for firmware upgrade, data support from/to◆ PC,
streaming audio)
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Page 43
Intelligent Configuration Power Management◆
Single battery operat ed embedded DC/DC converter◆
Integrated 6800/8080 compatible LCD i nterface◆
General◆-Purpose IO pins (nearly all pins can be configured as GPIO pins)
Integrated Ma◆ster/Slave IIC interface
Integrated ADC with line input and voice input (with recording possibility)◆
Built◆-in ADC for level measurement & control (5 -inputs)
Integrated DAC with line output, headphone output with short◆-circuit protection
Integrated ◆IIS input and output interface
Integrated SPDIF receiver◆
Integrated UART + IRDA◆
Integrated Real Time Clock with alarm◆
Boundary scan◆
2.3 Possible software features
MP3 encoding/decoding (*) => Support for MPEG 1 layer 3 and MPEG 2 layer 2.5 and la◆yer 3 audio
decoding (MP3)
WMA decoding (*)◆
AAC decoding (*)◆
Ogg Vorbis decoding (*)◆
Voice recording using A DPCM◆
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
DIGITAL
APPL.
I/O
FUNC
LEVEL
PIN STATE
AFTER
RESET
CELL
DESCRIPTION
TYPE
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
32.768 kHz oscillator (fixed: 4 pins)
- 39 -
Page 44
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
XTALL_GNDA V8 vssco Analog ground Oscillators/PLL’s
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)
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 K9F2G08U0M
1. Description
Offered in 512M×8bit, the K9F2G08U0M 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
- 49 -
Page 54
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
– Program/Erase Lockout During Power Transitions
◆ Reliable CMOS Flo ating-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
- 50 -
Page 55
◆ 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
36 Vss P GROUND
1~6, 9, 10, 14, 15, 20~24, 25~28, 33~35, 39, 40, 45~48 N.C N NO CONNECTION
I/O0 ~ I/O7
CLE
ALE
/CE
/RE
/WE
/WP
R/B
PRE
I/O
I COMMAND LATCH ENABLE
I ADDRESS LATCH ENABLE
I CHIP ENABLE
I READ ENABLE
I WRITE ENABLE
I WRITE PROTECT
I READY/BUSY OUTPUT
I POWER -ON READ ENABLE
DATA INPUTS/OUTPUTS
3.5.3 Function introduction to TCM809ZVBN713
1. Description
The TCM809 is cost-effective system supervisor circuits designed to monitor VDD in digital systems;
providing a reset signal to the host processor, when necessary. No external components are required.
The RESET output is typically driven active within 65 µsec of VDD falling through the reset voltage
threshold. RESET is maintained active for a minimum of 140 msec after VDD rises above the reset threshold.
The TCM809 has an active-low RESET output. The output of the TCM809 is valid down to VDD = 1V. Both
devices are available in 3-Pin SC-70 and SOT-23B packages.
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2. Features
◆ Precision VDD Monitor for 2.5V, 3.0V, 3.3V, 5.0V Nominal System Voltage Supplies
◆ 140 msec Minimum RESET Time -Out Period
◆ RESET Output to VDD = 1.0V (TCM809)
◆ Low Supply Current, 9 µA (typ.)
◆ VDD Transient Immunity
◆ Small 3-Pin SC-70 and SOT-23B Packages
◆ No External Components
◆ Push-Pull RESET Output
◆ Temperature Ranges:
- Extended: SOT-23, SC-70 (V): -40°C to +125°C
3. PIN Description
PIN No. Symbol I/O Description
1
2
3
GND
Vcc
/RESET
O
P
/RESET push-pull output
Ground
Supply voltage
3.5.4 Function introduction to PQ1X281M2ZP
1. Description
The PQ1Xxx1M2ZP Series are Low Output Current, Compact Surface Mount Type Low Power-Loss
Voltage Regulators.
◆ 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
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1
Vin
I
DC input
2
3
4
5
GND
Vc
Nr
Vo
I
I
O
3.5.5 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
Ground
ON/OFF control terminal
Noise reduction
DC Output
3. PIN Description
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.
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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 VIN I Analog and Power input.
SHDN I Shutdown control input, active low.
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
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
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
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
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Chapter Four
Assembly and Disassembly Process
In order to get to know the structure of X23 (RU) more easily and directly, now we use
pictures to present each key point of disassembly and assembly process before all users to
prevent users from operating blindly and to damage elements, so we hope you can operate
according to the instructions strictly.
Note: all operations must be with strict anti-static measures. Operators must wear
anti-static gloves or wrist ring; electric screwdriver must be grounde d effectively and articles,
such as nippers must be removed static before using!
4.1 Disassembly process of the player
1. Press down in position A shown in the figure, take down rear casing and take out
battery.
2. Use knife blade to take down front casing mirror from A, B position shown in the figure.
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3. Use electric screwdriver or manual screwdriver to take down 3 screw (A, B, C) of front
casing.
4. Take down front casing and use electric screwdriver or manual screwdriver to take
down main board screw (A).
5. Take down main board and pay attention to headphone jack in position A.
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4.2 Assembly process of the player
Assembly process of the layer is the same with disassembly process, only the sequence is
reverse.
4.3 Disassembly and assembly process for OLED screen
Push away button in position A and B, take down connecting line and display screen. The
installation method is the same.
4.4 Disassembly and assembly process for USB jack
Open button in position A and B, take down connecting line and USB jack. The installation
method is the same.