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Teclast X21 Service Manual

Portable mp3 player
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X21(RU)
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Summary of Contents for Teclast X21

  • Page 1 X21(RU) service manual...

  • Page 2: Table Of Contents

    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...
  • Page 3 2.2.8 A-B REPEAT FUNCTION 2.2.9 RECORDING 2.2.10 TUNING 2.2.11 TUNING 2.2.12 TUNING 2.3 SETTINGS 2.3.1 SETTINGS 2.3.2 PLAY MODE 2.3.3 EQ SELECT 2.3.4 SLEEP 2.3.5 3D 2.3.6 PLAYLIST 2.3.7 PLAYLIST 2.3.8 FM CHANNEL 2.3.9 SCREEN SAVE 2.3.10 ADVANCED 2.4 SPECIFICATION Chapter Three Principle and Servicing section One Principle of the Player 3.1.1 Function introduction and principle of the player...
  • Page 4 3.2.12 ON/OFF control circuit 3.2.13 MIC circuit Section Three Servicing Cases 3.3.1 Servicing cases 3.3.2 Troubleshooting flow chart Section Four Servicing Parameters 3.4.1 Key point waveform diagram 3.4.2 Key point voltage list Section Five Function Introduction to IC 3.5.1 Function introduction to PNX0101 3.5.2 Function introduction to G690 3.5.3 Function introduction to PQ1X281 3.5.4 Function introduction to TC58512FT...
  • Page 5 Chapter Cinque PCB board & Circuit diagram Section One PCB board Section Two circuit diagram Chapter six BOM List...

  • Page 6: Chapter One About Maintenance

    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.

  • Page 7: Electric Resistance Method

    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.

  • Page 8: Required Device For Maintenance

    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 -...

  • Page 9: Usage Introduction

    Chapter Two Functions and Operation Instructions 2.1 USAGE INTRODUCTION 2.1.1 FUNCTIONS AND FEATURES # Philips PNX0101audio decode chip Adopt famous Philips PNX0101 audio decode chip, special for Hi-Fi MP3 player, forcefully making up audio signal loss when compressing MP3 to revert audio signal better. # Sennheiser headphone MX400) Build high-quality musical effect.

  • Page 10: Main Menu Illustration

    # Press in playback mode the next/previous track # Press for long in playback mode fast forward/backward # Press in tuning Preset mode select channel # Press in tuning SCAN mode manual scanning # Press for long in tuning Preset mode full auto scanning # Press for long in tuning SCAN mode automanual scanning...

  • Page 11: Tuning Interface Illustration

    2.1.5 TUNING INTERFACE You only need to find the drive nformation file on disc according to prompt information to ILLUSTRATION finish the installation of drive program. 3. After installation finishes, restart the computer and you may use the mobile storage function normally.

  • Page 12: Browse/Cancel File

    2.2.5 BROWSE/CANCEL FILE # BROWSE FILE PRESS FOR LONG In any case, press button for long to enter "Main Menu". Music fileand recording file are CAUTION: CAUTION: separately saved in the first two items of main Fast forward and fast backward operation menu, "My Music"...

  • Page 13: Tuning

    CAUTION: 2.2.13 TUNING # To avoid sudden power-off when # SAVE RADIO STATION recording, you cannot record when in low battery Select channel in Preset mode firstly, and and when disc is fully written. If you are then switch to SCAN mode to adjust frequency recording, it indicates "DISC FULL"...

  • Page 14: Play Mode

    # Advanced Mp3 player will switch to that in the cursor for the My EQ moment to facilitate you to select your desired REC Set sound effect mode. Press button to confirm Format this sound effect mode. Load Default CAUTION: System Info When playing files in "REC", there is no "EQ Language...

  • Page 15: Playlist

    As in the above illustration, enter "Edit" and “My EQ" interface, you may see the decibel browse files. The icon before songs in the (dB) of each frequency. playlist is " “. Select a song not in the playlist and press button to add it intothe list.

  • Page 16: Specification

    In system information menu, press button to After upgrading finishes, MP3 PLAYER will return to the previous menu. power on again. PRESS CAUTION: Because firmware will use some space, the NOTE: displayed content capacity may probably be # Only MP3 player detects that there is different from the actual capacity.

  • Page 17: Chapter Three Principle And Servicing

    One Principle of the Player 3.1.1 Function introduction and principle of the player X21 (RU) portable MP3 player is composed of the following functional modules: # MP3 main decode chip: main chip adopts PNX0101 decode chip of Philips Company, PNX0101 is the professional MP3 decode IC of Philips Company, with ARM and DSP integrated inside.

  • Page 18: Introduction To Ic Used By The Player

    3.1.3 Introduction to IC used by the player Introduction to IC used by X21 (RU ) is shown in the following figure: PCB board Location IC model Function TPS79301 Provide 3.3V voltage G690L263T System reset TPS62200 Provide 1.8V voltage ISL6294...

  • Page 19: Section Two Unit Circuit Principle

    Section Two Unit Circuit Principle 3.2.1 FLASH circuit principle 1. FLASH circuit schematic diagram is shown in the following figure 3.2.1.1: FLASH3V3 TC58512FT MPMC_AD7 100K I/O8 MPMC_AD6 I/O7 MPMC_AD5 RY/BY I/O6 MPMC_AD4 I/O5 FLASH3V3 FLASH3V3 D_GND D_GND MPMC_AD3 I/O4 MPMC_AD2 I/O3 MPMC_AD1 I/O2...
  • Page 20 C1, C2, C3, C4, L1 is the antenna input matching circuit of FM module; variable capacitance diode D1, D2 and winding inductor is the frequence selection tuning circuit in FM module. The control of FM adopts IIC bus control means, 9 and 10 of TEA5767 are two control input ends. Figure 3.2.2.1 FM module circuit schematic diagram - 15 -...

  • Page 21: Oled Module Circuit

    3.2.3 OLED module circuit 1. OLED module circuit schematic diagram is shown in the figure 3.2.3.1: 4.7K 4.7K P_VDD 16V/104 MBR0520/SOD123 VOLED CDRH3D16-4R7 VCC33 240K 1% 100K 106/25V/1206 475/X5R/6.3V TPS61040/LM2703 27K 1% Figure 3.2.3.1 OLED circuit schematic diagram 2. Working principle: for 12V high voltage is required to lighten OLED, boosted circuit must be used togther to fulfill it and the circuit includes two parts: boosted circuit and OLED jack circuit.

  • Page 22: Usb Jack Circuit

    Figure 3.2.5.1 Button circuit sche0matic diagram 2. Working principle: buttons of X21 (RU) include a 3-direction button, a HOLD switch and 4 single buttons (in which one is ON/OFF and PLAY button and will be introduced in ON/OFF circuit). Button...

  • Page 23: Charge Management Circuit

    3.2.6 Charge management circuit 1. Charge management circuit mainly charges lithium-ion battery and the circuit schematic diagram is shown in the figure 3.2.6.1: USB_VBUS VCC33 105/X5R U4 ISL6294 P_GND IREF /STATUS IMIN P_GND 120K 1% 510K 1% 120K 1% P_GND I_SET SS8050LT 100K...

  • Page 24: Low Voltage Detecting Circuit

    Above, I is about 200 milliampere. The reason why we design like this is that USB jack of some computers (such as laptop computer) cannot provide large current to charge battery. 3.2.7 Low voltage detecting circuit 1. Function of low voltage detecting circuit is that when input voltage of he player is detected to be lower than a certain voltage value, the player turns off.

  • Page 25: Power Management Module

    Battery protection circuit equivalent circuit diagram is shown in he figure 3.2.8.2: LITHIUM BATTERY Figure 3.2.8.2 Battery protection circuit equivalent circuit schematic diagram 2. Working principle: battery protection circuit is mainly composed of battery protection IC S8261 and built-in dual N groove MOSFET ECH8601. S8261 is lithium-ion polymer of built-in high precision voltage detect circuit and delay circuit, which may be served as protection IC of battery.
  • Page 26 VCC33 PQ1X281M2ZP 2.8V VOUT BYPASS 106/X5R 106/X5R P_GND D_GND D_GND Figure 3.2.9.2 2.8V power circuit schematic diagram VCC18 P_VDD CDRH3D16/HP-100 VCC18 300K¡À1% 47PF TPS62200/FAN5307* SOT23 - 5 106/X5R 106/X5R P_GND P_GND 120K¡À1% P_GND Figure 3.2.9.3 1.8V power circuit schematic diagram 2.

  • Page 27: Headphone Jack Circuit

    3.2.10 Headphone jack circuit 1. Headphone jack circuit schematic diagram is shown in the figure 3.2.10.1: RCLAMP0504F OUTL OUTR HP_VOUTR 2 HP_VOUTL 2 2SJ-A382-001(HP-AC) FM_ANT FM_ANT Si1912DL 4.7K MUTE Figure 3.2.10.1 Headphone jack circuit schematic diagram 2. Working principle: left and right channel audio signals outputted from PNX0101 output through being coupled by 220uF capacitor to headphone jack circuit.

  • Page 28: On/Off Control Circuit

    3.2.12 ON/OFF control circuit 1. ON/OFF control circuit schematic diagram of X21 (RU) is shown in the figure 3.2.12.1: P_VDD VCC33 VCC33 100k START MMST3906 PLAY/PAUSE 100K 1N4148WS 100K 1N4148WS PLAY P L A Y / P A U S E START 5.6M...
  • Page 29 2. Working principle: MIC circuit is mainly composed of microphone and microphone power biasing circuit. MIC1 switches the recorded external voice signals to electrical signal, through C61 coupling, output to ADC circuit of PNX0101 to converse analog electric signal to digital electric signal and form WAV files after encoding of software to save in FLASH.

  • Page 30: Section Three Servicing Cases

    Section Three Servicing Cases 3.3.1 Servicing cases Example 1 Symptom: power not on Description: no screen display and no output Analysis and troubleshooting: firstly check whether this trouble is caused by battery or by power circuit, connect to power adapter and check whether charge is available and whether screen has display. Power on and there is no display, check power supply 3.3V and 1.8V and find that 3.3V lowers to 0.6V, and voltage in normal working condition should be 1.8V, 3.3VDC-DC switch circuit is shown in the figure 3.3.1.1, use power adapter to supply power, 5V input is normal, charge enable end is high level, which is...
  • Page 31 P_VDD VCC33 START MMST3906 100K 1N4148WS 100K 5.6M 1N4148WS SS8050LT OFF 2 470K 100K 475/X5R MMST3904 P_GND P_GND START START Figure 3.3.1.2 ON/OFF circuit schematic diagram Example 3 Symptom: computer not connected Description: when connecting to computer, no reaction and o screen display Analysis and troubleshooting: firstly confirm whether charge and power on are available, and the result is normal.
  • Page 32 Example 5 Symptom: noise when playing Description: headphone output has noise when playing music Analysis and troubleshooting: if noise appears when playing, it is generally the condition that BGA has trouble, functions, such as playing are all normal and only noise appears, so we need to analyse the trouble is caused by decode part or rear stage.
  • Page 33 Example 7 Symptom: no screen display Description: screen is not on and there is no display Analysis and troubleshooting: firstly confirm the trouble appears in power supply and screen itself, after power and listen, the sound is normal, so we preliminarily decide that power supply 3.3V, 1.8V are basically normal.
  • Page 34 MIC switches the recorded external voice signal to electric signal, through C61 coupling, output to ADC circuit of Pn0101 and form WMV files after being coded by software to save in Flash. Firstly lay sound file and check whether there is noise, and there is no, check recording circuit, power supply is normal, when recording, use oscillograph to test C61 and there is clutter interference.

  • Page 35: Troubleshooting Flow Chart

    3.3.2 Troubleshooting flow chart 1. Troubleshooting process for “No screen display” is shown in the figure 3.3.2.1: No screen display Whether Check DC-DC boosted 12V voltage of D8 cathode circuit and elements around is normal Whether there is 12V voltage on Whether display screen flat cable holder has false welding display screen...
  • Page 36 2. Troubleshooting process for “USB not connected” is shown in the figure .3.3.2.2: USB not connected whether 5V of L18 is normal; Q8 has trouble or USB whether grounding is socket has false welding normal Check each DC-DC switch Whether 3.3V, 1.8V circuit and peripheral elements are normal whether...
  • Page 37 3. Troubleshooting process for “Button has no function” is shown in the figure 3.3.2.3: Button has no function Whether all functions have no Change some button function whether lock button has Change BGA action HOLD and 3.3V are Change BGA short-circuited ? Change HOLD button Figure 3.3.2.3 Button circuit troubleshooting flow chart...
  • Page 38 4. Troubleshooting process for “Charge is not available”is shown in the figure 3.3.2.4: Charge is not available Whether Charger battery voltage is fully Check I_SET and whether and computer cannot charged 4.2V-4.3V voltage high level is normal charge? whether Battery power supply is normal? full charged, protected? Check power supply circuit...
  • Page 39 5. Troubleshooting process for “Power not on” is shown in the figure 3.3.2.5: Power not on Whether Whether Check whether Q8 is 5V input is normal 3.3V output is normal normal Whether Whether Check U3 and circuit 1.8V output is normal Check U1 and circuit around around load is too heavy...
  • Page 40 6. Troubleshooting process for “Machine not switched on” is sown in the figure 3.3.2.6: Machine not switched on Refer to troubleshooting Whether adapter is flow chart for "Power not on” charged Whether Check whether 3.3V power S2 has open circuit and Whether Q2 is normal supply of R10 is normal false welding...

  • Page 41: Section Four Servicing Parameters

    Section Four Servicing Parameters 3.4.1 Key point 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.
  • Page 42 3. L1 1.8V energy storage waveform diagram 4. LCD_CS wabeform 5. LCD_D/C waveform diagram - 37 -...
  • Page 43 6. LCD_RESET 7. LCD_WR waveform diagram 8. LCD_RD waveform diagram - 38 -...
  • Page 44 9. LCD_DB0 waveform diagram 10. LCD_DB1 waveform diagram 1 1 . L C D _ D B 2 w a v e f o r m d i a g r a m - 39 -...
  • Page 45 12. LCD_DB3 waveform diagram 13. LCD_DB4 waveform diagram 14. LCD_DB5 waveform diagram - 40 -...
  • Page 46 15. LCD_DB6 waveform diagram 16. LCD_DB7 waveform diagram 17. IREF waveform diagram - 41 -...
  • Page 47 18. VCOMH waveform diagram - 42 -...

  • Page 48: Key Point Voltage List

    3.4.2 Key point voltage list Test point Working voltage (V FM3V3 CN1_4 2.82 CN4_2 12.36 CN4_3 (screen bright) 9.58 CN4_4 9.46 CN4_20 3.31 VCC33 (one end of R62) 3.31 U8_9 3.28 U8_12 3.31 U8_19 3.31 Q9_C 3.31 Q9_B 2.65 Q9_E 2.06 MIC_+ 1.71...

  • Page 49: Section Five Function Introduction To Ic

    Section Five Function Introduction to IC 3.5.1 Function introduction to PNX0101 The PNX0101 (ARM-based Solid State Audio IC) is an IC based on an embedded RISC processor. The device is designed for hand-held Solid State Audio applications like portable MP3 players. The high level of integration, low power consumption and high processor performances make the PNX0101 very suitable for portable hand-held devices.
  • Page 50 DAC_VOUTR AC grounding DAC_VOUTL AC grounding DAC_VDDA33 DAC analog power supply 　 DAC_VREFP DAC_VREFN Grounding HP_OUTR Headphone output (right) HP_OUTL Headphone output (left) HP_OUTCA N1 connected HP_OUTCB N2 connected HP_VDDA33A Headphone analog power supply HP_VDDA33B Headphone analog power supply HP_GNDAA Headphone analog ground HP_GNDAB Headphone analog ground...
  • Page 51 MCI_DAT_0 Power off level MCI_CLK Card read chip selection clock MCI_CMD Unused USB_CONNECT_N USB2.0 output USB_DP USB data line USB_DM USB data line USB_VBUS USB power supply USB_RREF Unused USB_GNDA Analog USB_VSSA_REF Analog USB_VSSA_TERM Analog USB_VDDA18_PLL Unused USB_VDDA18_BG Unused USB_VDDA33 Unused USB_VDDA33_DRV Unused...
  • Page 52 MPMC_STCS_2 Unused MPMC_STCS_1 Unused MPMC_STCS_0 Unused MPMC_DYCS Unused MPMC_CLKOUT Unused MPMC_CKE Unused MPMC_WE Unused MPMC_RAS Unused MPMC_CAS Unused MPMC_DQM_1 Unused MPMC_DQM_0 Unused MPMC_NOE Read gating MPMC_BLOUT_1 Unused MPMC_BLOUT_0 Write gating MPMC_RPOUT Unused UART_TXD Unused UART_RXD Unused UART_NCTS Unused UART_NRTS Unused GPIO_3 GPIO_2 GPIO_1...

  • Page 53: Function Introduction To G690

    VDDE3 3.3V power supply VDDE4 3.3V power supply 1.8V～3.3V power supply VDDE5 1.8V～3.3V power supply VDDE6 VSSE1 Grounding VSSE2 Grounding VSSE3 Grounding VSSE4 Grounding VSSE5 Grounding VSSE6 Grounding DCDC_PLAY Power on signal DCDC_STOP P_GND DCDC_LX2 DC- DC in DCDC_LX1 DC- DC in DCDC_VUSB USB voltage input DCDC_VBAT...

  • Page 54: Function Introduction To Pq1X281

    Pin function is shown as the following figure: Contiguous signal name Function description /RESET Output reset low level IC power supply rounding 3.5.3 Function introduction to PQ1X281 PQ1X281 may output fixed voltage 2.8V, EN pin is enable end, high level works. The feature of the 2.8V voltage outputted by this IC is small ripple and pure voltage, which is used to supply power for audio system, FM and microphone.

  • Page 55: Function Introduction To Si1912Dl

    Pin function is shown as the following figure： Contiguous signal name Function description Chip selection Read gating Write gating Write protection RY/BY Busy/idle judgment 12、37 Power supply 3.5.5 Function introduction to SI1912DL SI1912DL integrates 2 MOS tubes insides and is used to control on/off of two circuits. In X17 (RU),it is served as control IC of secondary output.

  • Page 56: Tps79301

    Pin function is shown as the following figure： Contiguous signal name Function description Voltage output end Grounding Output feedback Enable end 3.5.7 TPS79301 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.

  • Page 57: Function Introduction To Isl6294

    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.

  • Page 58: Function Introduction To S80829

    IC enable pin System grounding IMIN Minimum current setup IREF Charge current setup 3.5.10 Function introduction to S80829 The S-808xxC series is a series of high-precision voltage detectors developed using CMOS process. The detection voltage is fixed internally with an accuracy of ±2.0%. Two output forms, Nch open-drain and CMOS output, are available.
  • Page 59 DATA Data pin (IIC serial data control) CLOCK Clock pin (IIC serial clock control) Unused Read/write control BUSM Bus mode input BUSEN Bus mode gating SWP1 Software program port 1 SWP2 Software program port 2 XTAL1 Crystal oscillator input 1 XTAL2 Crystal oscillator input 2 　...

  • Page 60: Whole Set

    Chapter Four Disassembly and Assembly Process In order to know structure of X21 (RU) more easily, directly and conveniently, now pictures are adopted to present each link of the process of disassembly and assembly of the player before users to prevent them operating incorrectly to damage elements.
  • Page 61 2.Exert strength with nails towards the upward arrow direction from the joint place of rear casing aluminum alloy and middle casing (A, B) and take down rear casing. 3. Take down 4 rings (A, B, C, D) 4. Pull the middle casing (A) of USB jack outwards to take down main board. - 56 -...

  • Page 62: Assembly Process Of The Whole Set

    4.1.2 Assembly process of the whole set 1. Install ON/OFF button (A), 3-direction button (B), volume control button (C) and lock button (D). In order to prevent then from falling off in the course of assembly, you may use adhesive tape outside the front casing to fasten when necessary.

  • Page 63: Oled Display Screen

    4. Install into rear casing and use electric screwdriver to fix 4 screws (A, B, C, D). 4.2 OLED display screen 4.2.1 OLED disassembly process 1.Take down main board and pull up display screen according to the direction shown in the illustration.

  • Page 64: Li Battery

    4.3 Li battery 4.3.1 Li battery disassembly process 1. Take down rear casing, and take down battery according to arrow direction. 2. Use brand iron to weld out point A and B and take down battery 4.3.2 Li battery assembly process 1.

  • Page 65: Fm Tuning Board

    2. Fix the battery onto the sponge of main board battery location. 4.4 FM tuning board 4.4.1 FM tuning board disassembly process Exert strength according to upward arrow direction from , B position with fingers and take down FM board. 4.4.2 FM tuning board assembly process Aim the FM tuning board at the 8pin socket on main board and insert FM tuning board.
  • Page 66 Chapter Cinque PCB board & Circuit diagram Section One PCB board X21 PCB Board - 61 -...
  • Page 67 VCC18 VDDI ADC_VDDA18 XTAL_VDDA18 D_GND PNX0101 22PF 12MHz 22PF VCC33 D_GND D_GND VDD_MPMC VDD_I/O KEY_SCAN_2 ADC10B_VDDA33 KEY_SCAN_1 XTALH-IN XTALH-OUT MPMC-D15 MPMC-D14 OSCIALLATORS 100K±1% BAT+ D_GND XTALL-IN MPMC-D13 XTALL-OUT MPMC-D12 180K±1% MPMC-D11 MPMC-D10 D_GND D_GND D_GND SPDIF-IN SPDIF MPMC-D9 D_GND AUDIO PLAYER MPMC-D8 MPMC_AD7 ADC10B-GPA4...
  • Page 68 USB1 FM_3V3 DAC_V33 Shield 10UH/2012 Shield USB_DP 2 SDCW2012-2-900T USB_VBUS USB_DM 2 3DU05S-32T-10 680 DCR<100mΩ SS8550LT D_GND RCLAMP0504F/ SC-70 6L 越靠近入口越好！ FM_3V3 100K USB_DET 1 D_GND CON2X4 IIC-SCL 601/1005 FM_3V3 IIC_SCL IIC-SDA 601/1005 D_GND IIC_SDA FM-OUTL 180K FM_OUTL FM_ANT FM-OUTR P_GND FM_OUTR RCLAMP0504F/ SC-70 6L...
  • Page 69 P_VDD VCC33 VCC33 VCC33 VOUT 33K±1% G690L263T71/R3111N252CT1 BYPASS P_GND 22PF 106/X5R TPS79301 SOT23-6 P_GND D_GND 106/X5R /RESET RESET 20K±1% SFI0402-050E100NP P_GND P_GND A_GND P_GND P_GND P_GND P_GND VCC18 CDRH3D16/HP-100 VCC18 300K±1% 47PF USB5 TPS62200/FAN5307* SOT23-5 106/X5R 106/X5R BAT43WS USB_VBUS P_GND P_GND USB_VBUS 120K±1%...
  • Page 70 FM_3V3 C1 101 C2 27PF FM_ANT 120nH 47PF 106/X5R/0805 SGND SGND SGND FM_3V3 SGND SGND 100K 33nH SGND BB202 CPOP DIFL2 VCOT1 DIFL1 C12 333 VCOT2 TCIFC SGND VCOVCC VREF TEA5767HN DGND MPXO DVCC TMUTE FM_OUTR NECTAR-I DATA RAVO FM_OUTL CON2X4 CLOCK LAVO...
  • Page 71 Chapter six BOM List MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE X21L（RU）SILVER WHITE（1G） MAIN BOARD 5448402 0090324 SMD RESISTOR 1/16W 0O±5% 0402 R51,R72,R73,R76 0090001 SMD RESISTOR 1/16W 0O±5% 0603 0090326 SMD RESISTOR 1/16W 10O±5% 0402 L14,R31,R32,R33 0090644 SMD RESISTOR 1/16W 18O±5% 0402 L12,R42,R43 0090339 SMD RESISTOR 1/16W 100O±5% 0402...
  • Page 72 MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE 0090645 PRECISION SMD RESISTOR 1/16W 180K±1% 0402 R29,R49 0090687 PRECISION SMD RESISTOR 1/16W 240K±1% 0402 0090682 PRECISION SMD RESISTOR 1/16W 300K±1% 0402 0090667 PRECISION SMD RESISTOR 1/16W 510K±1% 0402 SMD PRESS SENSITIVITY C5,C13,C47,C48,C58,C62,C64,C70,C73 1030029 SFI0402-050E100NP RESISTOR ①...
  • Page 73 MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE 0700154 SMD TRIODE 1N4148WS SOD-323 D2,D3,D4,D7 0680074 SMD SCHOTTKY DIODE BAT43WS SOD-323 0680077 SMD SCHOTTKY DIODE MBR0520 SOD123 0780298 SMD TRIODE MMST3904 SOD-323 Q9,Q5 0780299 SMD TRIODE SS8050LT SOD-323 Q3,Q6 0780293 SMD TRIODE MMST3906 SOD-323 Q2,Q4,Q7 0780300 SMD TRIODE SS8550LT SOD-323...
  • Page 74 MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE 1140070 MICROPHONE 44dB±3dB 4×1.5 WITH NEEDLE MIC1 1980050 EARPHONE SOCKET 2SJ-A382-001 1860085 USB SOCKET 2UB-M002-001 USB1 21P 0.5mm SMD,SUBMIT MEET 1940282 CABLE SOCKET WITH CLASP 2×4 5mm1.27mm STRINGHT 1970094 DULE FLAT NEEDLE INSERT MOLD HIGH 1.5mm SMD CMETAL OXIDE FILM 0960284 12MHz±30ppm 5032/4 20P...
  • Page 75 MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE 0310455 SMD CAPACITOR 16V 223±10% X7R 0402 C16,C17 0090326 SMD RESISTOR 1/16W 10O±5% 0402 0090390 SMD RESISTOR 1/16W 18K±5% 0402 0090385 SMD RESISTOR 1/16W 10K±5% 0402 0090447 SMD RESISTOR 1/16W 22O±5% 0402 R7,R4 0090408 SMD RESISTOR 1/16W 100K±5% 0402 0090396 SMD RESISTOR 1/16W 33K±5% 0402...
  • Page 76 MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE 0310710 SMD CAPACITOR 16V 333±10% X5R 0402 C12,C9 0310711 SMD CAPACITOR 10V 393±10% X5R 0402 0310453 SMD CAPACITOR 25V 103±10% X7R 0402 0310480 SMD CAPACITOR 10V 104±10% X5R 0402 C13,C19　　　　⒃ 0310790 SMD CAPACITOR 10V 104±20％ X5R 0402 C13,C19　　　　⒃...

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