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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 2.1 USAGE INTRODUCTION...
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2.3 SETTINGS 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 3.1.3 Introduction to IC used by the player Section Two Unit Circuit Principle...
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3.5.2 Function introduction to K9F4G08U0M 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...
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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.
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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.
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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 - 3 -...
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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.
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#Press in tuning PRESET mode select channel #Press for long in tuning PRESET mode full auto scanning #Press in tuning SCAN mode manual scanning #Press for long in tuning SCAN mode automanual scanning #When operating in menu move cursor or set item #Press or for long in “My EQ”...
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normally. Shown as the following figure: PRESET mode (normal receiving) Battery capacity Frequency of the current radio station PRESET channel display SCAN mode (scanning) 2.2.2 USE MOBILE STORAGE FUNCTION This player can be used as mobile storage in Windows ME/2000/XP operating system. In Name of recorded file Windows 98SE and Mac operating system, drive Battery capacity...
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Press button to select upward or track, it switches into normal playback downward and then press button to enter automatically. files browsing . #ADJUST VOLUME When playing or tuning, pressing button or for long may adjust volume. The PRESS PRESS display of adjusting volume in music playback FOR LONG PRESS...
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Select "FM Radio" in main menu and press In the course of full auto/automanual Button to listen to radio. scanning, press button to stop #EXIT TUNING MODE scanning. When listening to radio, press button for #FM RECORDING long to return to main menu. When listening to radio , press button for #PRESET/SCAN MODE SWITCH...
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browse play each track for 10 seconds. #Timing power-on time is a rough time, and may have difference. repeat play single track. repeat play all tracks. 2.3.5 PLAYLIST repeat play all tracks in this Folder. #Browse CAUTION: Select "Browse" , and you may check how #Play mode is defaulted to "Normal"...
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#REC Set Download the latest firmware upgrading file Here to set the recording quality ,The from BBK website firstly, such as "BBK_X31RU. recording quality is higher, the sound quality is ebn" and "X31RU_Resource.bin", copy the two better and the used space is more. Three kinds...
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#To ensure successful firmware upgrading, do not power off during the course of upgrading. PRESS #Upgrading will last for 10 seconds or more, NOTE please try your best not to operate other #Only Mp3 player detects that there is upgrading buttons during this course.
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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.
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3.1.3 Introduction to IC of the player Introduction to IC of the player is shown as in the following table: IC model IC model Function TPS79301 Precision voltage stabilizer G690L263T71 Reset IC TPS62200 Precision voltage stabilizer ISL6294IRZ Charge management PIC10F200T Voltage detect PNX0102AEX MP3 decode...
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Section Two Unit Circuit Principle 3.2.1 FLASH circuit 1. FLASH circuit schematic diagram is shown in the figure 3.2.1.1: K9F2G08U0M-YCBO MPMC_AD7 I/O8 MPMC_AD6 I/O7 MPMC_AD5 VCC33 RY/BY I/O6 MPMC_AD4 100K I/O5 FLASH3V3 FLASH3V3 104 X5R D_GND 104 X5R D_GND MPMC_AD3 I/O4 MPMC_AD2 I/O3...
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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.
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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.
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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.
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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.
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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: USB_VBUS VBUS BAT43WS USB_VBUS SI2305DS VCC33 BAT+ P_GND 105 Y5V BAT+ P_GND IREF /STATUS IMIN 10K * CHGEN P_GND 510K...
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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: S8261AAJMD-G2J-T2 SOT23-6 DOUT...
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3.2.8 Power circuit 1. 3.3V power circuit is shown in the figure 3.2.8.1: P_VDD VCC33 TPS79301 SOT23-6 VCC33 VOUT 33K1 % BYPASS 22PF 106/X5R 106/X5R 20K 1% P_GND P_GND P_GND P_GND Figure 3.2.8.1 3.3V power circuit 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;...
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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.
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3.2.10 Power on/off circuit 1. Power on/off circuit diagram is shown in the figure 3.2.10.1: VCC33 100k PLAY/PAUSE 1N4148WS START 601/1005 SFI0402-050E100NP P_GND 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.
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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.
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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;...
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[ 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.
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[ 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;...
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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 Check DC-DC boosted whether D8 anode circuit and surrounding 12V voltage is elements normal Check whether 12V Flat cable holder of display voltage is on display screen is false welding screen socket...
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2.Troubleshooting process for USB not connected is shown in the figure 3.2.2.2: USB not connected Q8 outputs Q8 has trouble or USB 4.8V and whether socket has false welding it is normal Check Check each DC-DC switch whether 3.3V, 1.8V circuit and peripheral elements are normal Check...
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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 Change a certain button have no function whether machine Change BGA failure Whether 3.3V circuit output is Change BGA normal Check R19, R71 Figure 3.3.2.3 Troubleshooting flow chart for “Buttons have no function”...
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4.Troubleshooting process for No tuning function is shown in the figure 3.2.2.4: No tuning function Whether Check power supply it ca switch to tuning oscillation, data I C circuit mode Whether it can switch to auto Check SCL, SDA signal search Check Whether...
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5 . Troubleshooting process for “Cannot charge” is shown in the figure 3.2.2.5: Cannot charge Connect with computer Whether battery is fully and check whether charge Check set detect circuit is available charged Power Battery supply of the player Check power supply circuit is fully charged and is normal protected...
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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 µ Ú Ë Ä ½ Ú Î...
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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.
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◆ 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) ◆...
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XTALL_GNDA vssco Analog ground Oscillators/PLL’ s bitslicer/SPDIF (fixed: 3pins) SPDIF_IN input apio (IO) SPDIF input SPDIF_VDDA33 vddco Analog supply SPDIF input SPDIF_GNDA vssco Analog ground SPDIF input 10-bit ADC (fixed: 7 pins) ADC10B_GPA4 input apio (ZI) Analog General Purpose pins ADC10B_GPA3 input apio (ZI)
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ADC_VDDA18 vddco Analog supply ADC ADC_VDDA33 vddco Analog supply ADC ADC_GNDA vssco Analog ground ADC ADC_VREF input apio (IO) ADC Reference Voltage ADC_VINR input apio (IO) SADC Right Analog Input ADC_VINL input apio (IO) SADC Left Analog Input ADC_MIC input apio (IO) Microphone input ADC_MIC_LNA...
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USB_GNDA vssco Reserved for USB 2.0 HS USB_VSSA_REF vccso Reserved for USB 2.0 HS USB_VSSA_TERM vssco Reserved for USB 2.0 HS USB_VDDA18_PLL vddco Reserved for USB 2.0 HS USB_VDDA18_BG vddco Reserved for USB 2.0 HS USB_VDDA33 vddco Reserved for USB 2.0 HS USB_VDDA33_DR vddco Reserved for USB 2.0 HS...
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iic400kt5 IIC_SCL 0-5 VDC tolerant input Serial clock IIC Slave iic400kt5 IIC_SDA 0-5 VDC tolerant input Serial data IIC Slave MPMC (fixed: 52 pins) MPMC_D_15 MPMC data input/output 15 input bpts10th GPIO_MPMC_50 General Purpose IO pin MPMC_D_14 MPMC data input/output 14 input bpts10th GPIO_MPMC_49...
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MPMC_D_1 MPMC data input/output 1 input bpts10th GPIO_MPMC_36 General Purpose IO pin MPMC_D_0 MPMC data input/output 0 input bpts10th GPIO_MPMC_35 General Purpose IO pin MPMC_A_20 MPMC address 20 output bpts10th GPIO_MPMC_34 General Purpose IO pin MPMC_A_19 MPMC address 19 output bpts10th GPIO_MPMC_33 General Purpose IO pin...
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Row address strobe for SDRAM MPMC_NRAS and SyncFlash devices. Active output bpts10th LOW. GPIO_MPMC_7 General Purpose IO pin Column address strobe for SDRAM MPMC_NCAS and SyncFlash devices. Active output bpts10th LOW. GPIO_MPMC_6 General Purpose IO pin Data mask output to SDRAM. Active HIGH.
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Reset power down to SyncFlash MPMC_RPOUT memory. Active LOW. Used for output bpts10th static memory devices. GPIO_MPMC_0 General Purpose IO pin UART (fixed: 4 pins) UART_TXD Serial output bpts10tht 0-5 VDC tolerant output GPIO_UART_3 General Purpose IO pin UART_RXD Serial input bpts10tht 0-5 VDC tolerant input...
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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.
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– 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 ◆...
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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.
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BYPASS further reduce regulator noise feedback input voltage for the adjustable device Output of the regulator 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.
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PIN No. Symbol Description /RESET 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.
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Ground 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.
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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 ◆...
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VCOTANK2 voltage controlled oscillator tuned circuit output 2 VCC(VCO) voltage controlled oscillator supply voltage DGND digital ground VCCD digital supply voltage DATA bus data line input/output CLOCK bus clock line input n.c. not connected WRITE/READ write/read control input for the 3-wire bus BUSMODE bus mode select input BUSENABLE...
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RFI2 RF input 2 TAGC time constant RF AGC LOOPSW switch output of synthesizer PLL loop filter 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.
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3. PIN Description PIN No. Symbol Description Power input Open-drain power presence indication Open-drain charge indication pin Enable input Charger output pin IREF Charge-current program and monitoring pin IMIN End-of-charge (EOC) current program pin System ground 3.5.9 Function introduction to PIC10F200T 1.
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- 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 ?...
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Ground ON/OFF control terminal Noise reduction DC Output 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.
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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.
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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 -...
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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 -...
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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 -...
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Chapter Cinque PCB board & Circuit diagram Section One PCB board 1. Surface layer of PCB Board - 68 -...
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