1. Manuals
  2. Brands
  3. BBK Manuals
  4. Amplifier
  5. AV311T
  6. Service manual

BBK AV311T Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
AV311T
service manual

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the AV311T and is the answer not in the manual?

Questions and answers

Related Manuals for BBK AV311T

Summary of Contents for BBK AV311T

  • Page 1 AV311T service manual...

  • Page 2: Table Of Contents

    Catalog Chapter One About Maintenance 1.1 Safety precautions 1.1.1 Power supply 1.1.2 Precautions for antistatic 1.1.3 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...
  • Page 3 2.3.8 Select EQ Mode 2.3.9 DEFAULT 2.3.10 Karaoke 2.3.11 Tuning 2.3.12 Tuning (Continued) 2.3.13 Channel Delay 2.3.14 Noise Testing 2.3.15 Select Speaker Mode 2.3.16 Headphone 2.4 ACCESSORIES 2.5 SPECIFICATIONS Chapter Three Unit Circuit Principle Section One Principle of the player 3.1.1 Composition of the player 3.1.2 Function and features 3.1.3 Block diagram of the player...
  • Page 4 3.5.3 function introduction to Cd4051 3.5.4 function introduction to Cd4052 3.5.5 function introduction to Cd4053 3.5.6 function introduction to Pt6311 3.5.7 function introduction to UTCLM4880 3.5.8 function introduction to 74HC04 3.5.9 function introduction to Lm1875 3.5.10 function introduction to TDA2052 3.5.11 function introduction to M62446 3.5.12 function introduction to AT24C02 3.5.13 function introduction to L7805...
  • Page 5 6.8 MICROPHONE HOLDER BOARD 6.9 VIDEO FREQUENCY BOARD 6.10 REMOTE CONEROLLER 6.11 PANEL UNIT 6.12 PROGRAM CPU 6.13 SN LABEL 6.14 SUPPLEMENT MODULE...

  • Page 6: Chapter One About Maintenance

    Chapter One About Maintenance 1.1 Safety precautions 1.1.1 Power supply When servicing audio power amplifier, the servicing personnel pay special attention to the power board with 220V AC, or else the improper operation will lead to body damage. The alternate current which outputs to power amplifier board through power board is also up to voltage with about 50V;...

  • Page 7: About Placement Position

    1.1.3 About placement position 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 elements appear.

  • Page 8: Element Substitution Method

    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.

  • Page 9: Chapter Two Functions And Operation Instructions

    Chapter Two Functions and Operation Instructions 2.1 FEATURES ◆ 2-way coaxial digital signal input, 1-way optical digital signal input ◆ With 5.1CH input terminal, capable of connecting with external multi-channel advanced decode output signals such as DOLBY DIGITAL, DTS ◆ With subwoofer output terminal, capable of connecting with active subwoofer speaker ◆...

  • Page 10: Control Button Locations And Exp Lanations

    2.2 Control button Locations and Exp Lanations 2.2.1 Front panel functions and illustrations ６ HOME THEATRE RECEIVER AV311T SOUNDFIELD MUTE TUNER PRESET STEREO STERO STADIUM SLEEP OPTICAL DIGITAL STAGE HALL DISCO LIVE １ ２ ３ ４ ５ Headphone jack ４...

  • Page 11: Rear Panel Illustrations

    MUTE symbol DSP decode mode symbol DTS decode mode symbol In DSP decode mode, stimulate STADIUM １ ０ Dolby Digital decode mode symbol sound field Ⅱ Dolby Pro Logic decode mode symbol In DSP decode mode, stimulate STAGE TUNER symbol,its flicker shows the tuner is sound field in signal searching state In DSP decode mode, stimulate HALL sound...

  • Page 12: Illustrations To The Remote Control

    2.2.4 ILLUSTRATIONS TO THE REMOTE CONTROL STANDBY button: Enter or exit standby state SOUND/VIDEO SOURCE button: Select input signal sources manually NUMBER buttons: For saving and calling saved ＳＴＡＮＤＢＹ ＭＵＴＥ radio stations １ ２８ AM STEP button: Pressing this button for long ＯＰＴＩＣＡＬ...

  • Page 13: Basic Operations

    the VFD screen is lightened. In mute state, 2.3 BASIC OPERATIONS press MUTE button on the remote control, the 2.3.1 Turn On/Off the Unit unit restores to output sound and the "MUTE" 1. Power On symbol turns out. Using the MULTIFUNCTION ◆...

  • Page 14: Select Decode Mode

    ◆ Rotate the MULTI-FUNCTION knob, VFD Dolby DTS DSP Default Input channel PL II Stero Digital Decode screen will display "OPTICAL", "COAX1", Yes Stereo Analog Signal "COAX2", "DVD", "VCD", "EXT 5.1CH", Yes Stereo Yes Stereo "AM" and "FM" symbols which respectively Digital Signal Dolby...

  • Page 15: Adjust Volume

    2.3.5 Adjust Volume ◆Rotating the MULTI-FUNCTION knob on the front panel or pressing the MAIN VOLUME button on the remote control may synchronously adjust 6-channel level and the screen displays"VOL XX" adjustment range 0~60. Note: The main volume automatically sets in 20 each time when power on.

  • Page 16: Default

    1. Karaoke volume ◆ There are two means to adjust Karaoke volume: remote control and menu. Remote Control Means Press KARAOKE VOLUME button on the EQ MODE Remote control Menu Means Press MENU button on the front panel until MIC VOL appears, and then rotate the MULTI- FUNCTION knob.

  • Page 17: Tuning

    3. Karaoke tone After 3 seconds searching radio station, you ◆Press TREBLE and BASS button of Karaoke may rotate the MULTI-FUNCTION knob to on the remote control to adjust Karaoke treble Adjust volume. and bass. TREBLE BASS TUNER Karaoke tone TUNER BASIC OPERATIONS 2.3.11 Tuning...

  • Page 18: Tuning (Continued)

    ◆After completely saving, PRESET symbol on The Explanation of MODE button the screen is lightened. This unit has two working modes in the Receiving status: AUTO/MANUAL 、 1 In AUTO working mode, if you select FM Wave band, this unit will automatically recognize the radio station program is mono signal or stereo signal and keep the mono or HOMETHEATRERECEIVERAV311T...

  • Page 19: Channel Delay

    、 4 Connect the AM round antenna to the stand. NOTE: Do not use the outdoor and indoor FM Antennae at the same time. AM round antenna GND (Grounding) terminal In order to ensure the safety and decrease the interference, please well connect the GND terminal. The better grounding method is insert the metal pole Stand into wet ground.

  • Page 20: Select Speaker Mode

    ◆ During system working, it is used for users to adjust level balance between channels in multi-channel state. ◆ In non-STEREO decode mode, press TEST button on the remote control to enter noise testing mode. The unit will output noise according to the sequence of left, centre, right, SPK.

  • Page 21: Accessories

    2.4 ACCESSORIES ◆ 1pcs User Manual ◆ 1pcs Remote Control ◆ AV Cord 1pcs ◆ Jack to mini-jack adapter 1pcs ◆ 7 AAA battery 2pcs ◆ 1pcs Warranty card ◆ FM/AM antenna 1suit 2.5 SPECIFICATIONS 、 1 Rated Output Power Ω...

  • Page 22: Chapter Three Unit Circuit Principle

    Chapter Three Unit Circuit Principle Section One Principle of the player AV311T (RU) is an advanced power amplifier launched into market recently. It is with DTS/AC-3 digital decode function, which makes sound processing more perfect to effectively control the distortion and noise in the course of audio signal.

  • Page 23: Block Diagram Of The Player

    220V Video board Signal output RLY0 P_RC Xl100 OVER P_RC xs101 Xs100 RDS outlet Xs101 P_LRM P_CSM xp20 Xs22 Power board Signal board +12V Transformer entry-level -12V D+5V Secondary coil Xp14 Xp16 Xp17 DGND SWITCH PH_SW Xs17 Xs16 Xs14 DATA Decode board P_DIST OK_DAT...

  • Page 24: Signal Flow Chart Of The Player

    P_LRM/P_SCM 4052-A/4052-B AMP BOARD DIGITALAUDIO INPUT Mix & buffer VOL&TONE INPUTSET 2*COAXIAL/OPTICAL Digital SL/SR 4558 audio 5.1CH 4053_INT Pre position TUNER Dual-decode IC, power Mix & buffer M62446 L/R/SL/SR/C/SW 5532 4052*2 Mix & buffer 0_LEVEL 5.1CH(L/R/SL/SR/C/SW) 4558 5.1CH Central surround Load P_DISP CLK/DAT/LAT...

  • Page 25: Section Two Unit Circuit Principle

    Section Two Unit Circuit Principle 3.2.1 Signal processing board 1. Input selection circuit AV321T(RU) has6 kinds of input means in all: optical input, coaxial input, CD, DVD, 5.1CH and tuning input. Digital signals of optical, coaxial input of this player are directly sent to power amplifier board for processing through flat cable.

  • Page 26: Decode Board

    through PT 2399 (N204), it is sent to power amplifier board for small signal amplifying through band- Pass filter. PT 2315 is controlled by MCU, so users may adjust his desired Karaoke effect at will through remote controller. Another path signal, after amplifying rectification, controls a switch triode V201 9014 to control the high/low level of detect signal P-KT to fulfil the detecting of Karaoke signals.

  • Page 27: Control Panel

    1) of digital audio decode IC Cs493264 (N105) for data processing. Analog signals of left/right channel are sent to decode board through flat cable Xs17, after front stage small signal processing, then sent to pin 10, 12 of IC Cs5340 (N108) for A/D conversion to change analog audio signal into PCM signal, then sent from pin 4 (audio PCM signal), 17 (sampling speed signal), 18 (clock signal) of N108 to pin 27, 28, 29 of N105, that is, input from another PCM input port of N105 for data processing.

  • Page 28: Power Board

    Button control N101 Display PT6311 Panel indicator light control area Remote control receiving Figure 3.2.3.1 Control panel circuit block diagram VFD101 is vacuum flourescent display screen and the most distinct feature is high brightness. The working principle is similar with that of kinescope of TV set. Pin 1, 2, 46, 47 are filament power supply, MCU controls SEG electrode through the control of PT6311 (N101) to make characters of corresponding working state display on screen.

  • Page 29: Power Amplifier Board And Protection Circuit

    The two groups AC 35V voltage outputted from the first sublevel winding of transformer, after ～ rectification and filtering of 8 In5404 (VD100 VD107) diode and 2 electrolytic capacitor (15000uF/63V, C108, C109), positive/negative 53V power is achieved to supply power for left/right channel. The two groups AC 17V voltage outputted from the second sublevel winding of transformer, after rectification and filtering of 4 IN5404 (VD111~VD114) diode and 2 electrolytic capacitor (4700uF/35V, C141, C142), positive/negative 23V power is achieved to supply power for SL/SR/C channel.
  • Page 30 3. C, SR, SL power amplifying circuit Compared with the former models, the three channels of AV311T (RU) adopt special audio power amplifying IC CD1875CZ (N104) and TDA7265 (N106). As for TDA7265 (N106), it has 11 pins in all, pin 3, 1 and 6 are its positive/negative power pin;...
  • Page 31 4. Protection circuit Protection circuit of power amplifier of AV321T (RU) is designed on power board. The protection means of L, R, C channel is fulfilled through disconnecting delay Y100 when starting up to disconnect the output. SR, SL channel achieves protection function through mute. AV321T (RU) is with power-on delay protection, central point over-voltage and over-current protection, standby protection.

  • Page 32: Video Input/Output Board

    (3) Short-circuit protection: an over-current sampling triode is connected to output load resistor of L, R channel, sampling triode of L channel is V114 (on power amplifier board), load resistor is R126, R127(on power amplifier board). C, SR, SL channel power amplifying IC has been with over-current protection inside.
  • Page 33 N104 (M62446), through coupling capacitor C103, C104, then sent to pin 2 and 6 of two operational Amplifiers of N100 (LM4880), after amplifying, headphone signal is outputted from pin 1 an d7 of N100 respectively. When headphone is inserted, MCU detects that PH_SW signal is high level, the corresponding control signal P_LRM is high level, main channel is muted;...

  • Page 34: Section Three Servicing Cases

    Section Three Servicing Cases 3.3.1 Servicing cases Example 1 Symptom: power-on protection Description: after power on, relay does not attract and "system abnormal, auto protection" displays. Analysis and troubleshooting: after power on, system protects, relay does not attract, shown as in the figure 3.3.1.1;...
  • Page 35 2. Causes of power-on protection: over-current protection, over-voltage protection and CPU cannot detect RLY0 signal; test whether each output channel has DC output; when power-on protection trouble appears, make clear which reason caused it. Centre or surround power IC have trouble, which cause that output signal has DC in it.
  • Page 36 Example 3 Symptom: decode has no function Description: when in analog input, decode has no output, input digital signals have no output Analysis and troubleshooting: analog signals with decoding have output, so we can judge that power amplifier circuit working is normal, and trouble is preliminarily decided on decode board. Shown as in the figure 3.3.1.3, input digital signal, test pin OSCLK, OLRCK, SDOUT of N106 Cs8415 and there is pulse waveform output, test AD2, AD1, AD0, WCK, BCK, MCLK of N105 CS4923 and they all have signal output, test AOUTA1, AOUTB1, AOUTA2, AOUTB2, AOUT3, AOUTB3 of N107 CS4360 and they...
  • Page 37 Works abnormally; if it is only digital audio signal has no output, firstly judge whether shaping circuit of digital audio signal works normally, then check whether N106 and peripheral circuit works normally. Abnormal system working may probably affect voltage, so in actual working firstly judge whether system power supply is normal.
  • Page 38 Note: when headphone has no output, firstly make clear whether relay is disconnected, then test whether SHUTDOWN pin voltage of LM4880 is normal ( 2.5V when in normal condition), and finally judge whether headphone has trouble or LM4880 has trouble. Example 6 Symptom: no sound output Description: after power on, connect to 5.1CH, main channel has no output, centre and surround have output, power board FL101, FL102 fuse is burnt down.
  • Page 39 Note: when no screen display appears, firstly make clear whether voltage of display screen is normal, whether display drive IC is normal; VFD screen is vacuum packaged and it is easy to damage, so in most conditions it is the screen that has been damaged. Example 8 Symptom: power not on Description: no action after power on, relay does not attract, no screen display.

  • Page 40: Troubleshooting Flow Chart

    3.3.2 Troubleshooting flow chart 1. Troubleshooting process for “ Power-on protection”is shown as in the following figure 3.3.2.1: Power-on protection Check whether there is Check which channel outputs central point voltage DC and then check this channel Check whether signal Check whether the diode or is added or main volume triode of over-current protection...
  • Page 41 2. Troubleshooting flow chart for “ Karaoke has no sound”is shown as in the following figure 3.3.2.2: Analysis: this kind of trouble may adopt signal input method. Test stage bu stage, when a certain stage does not have disturbance sound in loudspeaker, this stage has trouble; when using this method, check from back stage to front stage.
  • Page 42 3. Troubleshooting process doe “ No output (2 channels)”is shown as in the figure 3.3.2.3: No output (2 channels) Check whether power Refer to troubleshooting supply of each channel for "power not on” is normal Check whether mute Check whether MIC holder circuit signal is is normal, and check mute normal...
  • Page 43 VCD channel has no output Check Switch whether pin 3 to DVD channel and 13 of signal board and check whether there Change N101 N10have is output waveform Input Check Check VCD channel whether signal whether voltage and check whether pin 4 Change VCD input terminal board C119, C121 has Refer to troubleshooting of voltage...
  • Page 44 DSP has no output Switch digital input or analog input and check Digital signal has output whether there is no output Change signal board N111 Check Check Check Test whether +5V, whether pin 10, whether signal whether R128 +3.3V and 2.5V of decode 12 of decode board board C108 and C107 and R131 have...

  • Page 45: Section Four Servicing Parameter

    Section Four Servicing Parameter 3.4.1 Signal waveform diagram This section collects signal waveform diagram of audio, video and each unit circuit and the purpose is to help servicing people accurately and quickly judge where trouble lies to better servicing skills for servicing personnel.
  • Page 46 3. Waveform diagram of pin 2 of XS9 4. Waveform diagram of pin 3 of XS9 5. Waveform diagram of pin 1 of XS8 - 41 -...
  • Page 47 6. Waveform diagram of pin 2 of XS8 7. FL waveform diagram n DSP decode state 8. FR waveform diagram in DSP decode state - 42 -...
  • Page 48 9. C waveform diagram in DSP decode state 10. SL waveform diagram in DSP decode state 11. SR waveform diagram in DSP decode state - 43 -...
  • Page 49 12. FL output waveform diagram after decoding and power amplifier board amplifying 13. FR output waveform diagram after decoding and power amplifier board amplifying 14. C output waveform diagram after decoding and power amplifier board amplifying - 44 -...
  • Page 50 15. SL output waveform diagram after decoding and power amplifier board amplifying 16. SR output waveform diagram after decoding and power amplifier board amplifying 17. Waveform about “ CS5340 outputs MCLK” - 45 -...
  • Page 51 18. Waveform diagram about “ CS5340 outputs LRCK” 19. Waveform diagram about “ CS5340 outputs SCLK” 20. Waveform diagram about “ CS5340 outputs SDOUT” - 46 3 -...
  • Page 52 21. Waveform diagram about “ CS49326 outputs SDIN1” 22. Waveform diagram about “ CS49326 outputs SDIN2” 23. Waveform diagram about “ CS49326 outputs SDIN3” - 4 7 -...
  • Page 53 24. Waveform diagram about “ CS49326 outputs left/right clock” 25. Waveform diagram about “ CS49326 outputs SCLK” 26. C175 waveform diagram in DSP decode state - 48 -...
  • Page 54 27. C178 waveform diagram in DSP decode state 28. C184 waveform diagram in DSP decode state 29. C187 waveform diagram in DSP decode state - 49 -...

  • Page 55: Key Point Voltage

    30. C190 waveform diagram in DSP decode state 3.4.2 Key point voltage 1. Power board: +Vc voltage of flat cable holder XS8 is +53V, and -Vc voltage is -53V; negative voltage of diode VD113 is +14.6V; 2. Power amplifier board: negative voltage of diode VD111 is +22.3V, positive voltage of diode is - 22.3V, pin 3 of N105 mute signal voltage: -19.0V when mute is off, -22.4V when mute is on (main channel mute signal P_LRM and central surround mute signal P_CSM are separate, central surround channel in stereo state is always muted);...

  • Page 56: Section Five Function Introduction To Ic

    Section Five Function Introduction to IC 3.5.1 function introduction to 4558 1. Description The RC4558 and RM4558 devices are dual general-purpose operational amplifiers with each half ？ electrically similar to the A741 except that offset null capability is not provided. The high common-mode input voltage range and the absence of latch-up make these amplifiers ideal for voltage-follower applications.

  • Page 57: Function Introduction To Pt2399

    Description PIN No. Symbol Negative Power Supply VCC– Non-Inverting Input Pin 2 2IN+ Inverting Input Pin 2 2IN– Output 2 2OUT Positive Power Supply VCC+ 3.5.2 function introduction to PT2399 1. DESCRIPTION PT2399 is an echo audio processor IC utilizing CMOS Technology which is equipped with ADC and DAC, high sampling frequency and an internal memory of 44K digital processing is used to generate the delay time, it also feature an internal VCO circuit in the system clock, thereby , making the frequency easily adjustable.

  • Page 58: Function Introduction To Cd4051

    PIN No. Symbol Description External capacitor OP1-OUT External capacitor 1 output OP1-IN External capacitor 1 input OP2-OUT External capacitor 2 output OP2-IN External capacitor 2 input LPF2-IN Low pass filter 2 input LPF2-OUT Low pass filter 2 output LPF1-OUT Low pass filter 1 input LPF1-IN Low pass filter 1 output 3.5.3 function introduction to CD4051...

  • Page 59: Function Introduction To Cd4052

    PIN No. Symbol Description Channel selection port 1 Channel selection port 2 Positive Power Supply 3. TRUTH TABLE ON SWITH NONE 3.5.4 function introduction to CD4052 1. DESCRIPTION The CD4052 is a dual 4-channel multiplexer with two binary control inputs and inhibit input. The two binary control input signals select 1 of 4 pairs of channels to be turned on and connect it to the two outputs.

  • Page 60: Function Introduction To Cd4053

    PIN No Symbol Description Channel selection binary bit A Channel selection binary bit B X channel selection port 3 X channel selection port 0 X channel selection output X channel selection port 1 X channel selection port 2 Positive Power Supply 3.

  • Page 61: Function Introduction To Pt6311

    PIN No. Symbol Description Enable Negative Power Supply Select C Select B Select A Positive Power Supply 4. TRUTH TABLE ON SWITH NONE 3.5.6 function introduction to PT6311 1. DESCRIPTION PT6311 is a Vacuum Fluorescent Display (VFD) Controller driven on a 1/8 to 1/16 duty factor housed in 52-pin plastic QFP Package.
  • Page 62 ◆ Low Power Consumption ◆ Key Scanning (12 x 4 matrix) ◆ Multiple Display Modes: (12 segments, 16 digits to 20 segments, 8 digits) ◆ 8-Step Dimming Circuitry ◆ LED Ports Provided (5 channels, 20 mA max.) ◆ 4- Bits General Purpose Input Ports Provided ◆...
  • Page 63 PN No. Symbol Description SG9/KS9 SG10/KS10 SG211KS11 SG12/KS12 SG13/KS13 High-Voltage Segment Output Pins Also acts as the Key Source SG14/KS14 SG15/KS15 SG16/KS16 SG17/KS17 SG18/KS18 Logic Power Supply Pull-Down Level SG19/GR10 High Voltage Segment/Grid Output Pins SG20/GR9 High-Voltage Grid Output Pins High-Voltage Grid Output Pins Logic Power Supply LED5...

  • Page 64: Function Introduction To Utclm4880

    3.5.7 function introduction to UTCLM4880 1. DESCRIPTION The UTC LM4880 is a dual audio power amplifier capable of delivering typically 250mW per channel of continuous average power to an 8O load with 0.1% THD+N using a 5V power supply. The UTC LM4880 features an externally controlled, low-power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.

  • Page 65: Function Introduction To Lm1875

    ◆ High Noise Immunity Characteristic of CMOS Devices ◆ In Compliance With the JEDEC Standard No. 7A Requirements ◆　 Chip Complexity: 36 FETs or 9 Equivalent Gates 3. PIN DESCRIPTION PIN No. Symbol Description Signal input Signal output Signal input Signal output Signal input Signal output...
  • Page 66 ◆ AVO typically 90 dB ◆ Low distortion: 0.015%, 1 kHz, 20 W ◆ Wide power bandwidth: 70 kHz ◆ Protection for AC and DC short circuits to ground ◆ Thermal protection with parole circuit ◆ High current capability: 4A ◆...

  • Page 67: Function Introduction To M62446

    3. PIN DESCRIPTION PIN No. Symbol Description Negative Power Supply OUT1 Signal out SL Positive Power Supply OUT2 Signal out SR MUTE Mute control Negative Power Supply IN2+ Non-Inverting Input Pin SR IN2- Inverting Input Pin SR IN1+ Non-Inverting Input Pin SL IN1- Inverting Input Pin SL 3.5.11 function introduction to M62446...
  • Page 68 PIN No. Symbol Description SRin SR Input SLin SL Input GNDC C GND C Input GNDR R GND R Input GNDL L GND L Input BYPASSR R bypass capacitance BYPASSL L bypass capacitance LTRE L treble capacitance LBASS3 L bass capacitance LBASS2 L bass capacitance LBASS1...

  • Page 69: Function Introduction To At24C02

    PIN No. Symbol Select control DATA Serial Data input Serial CLK input DVDD Digital Power Supply 3.5.12 function introduction to AT24C02 1. Description The AT24C02 provides 2048 bits of serial electrically erasable and programmable read-only memory (EEPROM) organized as 256 words of 8 bits each. The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operations are essential.

  • Page 70: Function Introduction To L7805

    3. PIN DESCRIPTION PIN No. Symbol Description To Ground To Ground To Ground To Ground Serial Data input Serial SCL input TEST Test port Positive Power Supply 3.5.13 function introduction to L7805 1. Description LM7805 is 5V voltage regulator, locates on power board in this player and is used to generate 5V stable voltage.

  • Page 71: Function Introduction To 7912

    2. Features ◆ Suitable for CMOS ,TTL, the other digital IC’ s power supply ◆ Internal thermal overload protection ◆ Internal short circuit current limiting ◆ Output current in excess of 1 A ◆ Metal Fin is fully covered with Mold Resin 3.

  • Page 72: Function Introduction To Pt2315

    is low noise, high output-drive capability, high unity-gain and maximum-out-swing bandwidths, low distortion ,high slew rate, input-protect diodes, and output short-circuit protection. The operational amplifier is compensated internally for unity-gain operation. The device has specified maximum limits for equivalent input noise voltage.
  • Page 73 2. Features ◆ CMOS Technology ◆ Least External Components ◆ Treble and Bass Control ◆ Loudness Function ◆ Input/Output External Noise Reduction System/Equalizer ◆ 2 Independent Speaker Controls for Balance Function ◆ Independent Mute Function ◆ Volume Control in 1.25 dB/step ◆...

  • Page 74: Function Introduction To Cs4360

    PIN No. Symbol Description Serial CLK input 3.5.18 function introduction to CS4360 1. DESCRIPTION The CS4360 is a complete 6-channel digital-to-analog system include digital interpolation, fourth-order delta-sigma digital–to-analog conversion, digital de-emphasis, volume control, channel mixing and analog filtering. The advantages of this architecture include: ideal differential linearity, no distortion mechanism due to resistor matching error, no linearity drift over time and temperature and a high tolerance to clock jitter.

  • Page 75: Function Introduction To Cd4094

    PIN No. S ymbol Description LRCK Left/Right Clock MCLK Master Clock Digital Power /RST Reset DIF1/SCL/CCLK Digital Interface Format 1 DIF0/SDA/CDIN Digital Interface Format 0 M1/AD0/CS/ Mode Selection 1 Control Port Power Mode Selection 2 FILT+ Positive Voltage Reference Quiescent Voltage MUTEC3 Mute Control 3 AOUTB3...

  • Page 76: Function Introduction To Cs5340

    gates are enabled when OUTPUT ENABLE is taken HIGH. 2. Features ◆ Wide supply voltage range: 3.0V to 18V ◆ High noise immunity: 0.45 VDD (typ.) ◆ Low power TTL compatibility: Fan out of 2 driving 74L or 1 driving 74LS 3-STATE outputs 3.
  • Page 77 such as set-top boxes, DVD-karaoke players, DVD recorders, A/V receivers, and automotive applications. 2. FEATURES ◆ Advanced multi-bit Delta-Sigma architecture ◆ 24-bit conversion. ◆ Supports all audio sample rates including 192kHz. ◆ 101dB Dynamic Range at 5V. ◆ -94 dB THD+N. ◆...

  • Page 78: Function Introduction To Cs8415

    3.5.21 function introduction to CS8415 1. DESCRIPTION The CS 8415A is a monolithic CMOS device which receives and decodes one of 7 channels of audio data according to the IEC60958, S/PDIF and EIAJ CP 1201 interface standards or one channel of AES3 data. The CS8415A has a serial digital audio output port and comprehensive control ability via a 4-wire microcontroller port.

  • Page 79: Function Introduction To Cs49326

    PIN No. Symbol Description Positive analog power AGND Analog ground FILT PLL loop filter /RST Reset RMCK Input section recovered master clock RERR Receiver error RXP1 AES3/SPDIF receiver port 1 RXP2 AES3/SPDIF receiver port 2 RXP3 AES3/SPDIF receiver port 3 RXP4 AES3/SPDIF receiver port 4 OSCLK...
  • Page 80 2. FEATURES ◆ CDB49236 demonstrates 5.1channel decode capability of the CS4923 family . ◆ 6 discrete analog outputs driven by CS4340 DAC ◆ 4 S/PDIF optical outputs. ◆ Accepts analog input, s/PDIF digital input, burst compressed data. ◆ Discrete PLL which can provide multiple sampling frequencies ◆...
  • Page 81 PIN No. Symbol Description EXTMEM Connect up-pull resistance SDATAN Data input 2 VDD3 Digital ground 3 DGND3 Digital ground 3 BCK1 SCLK WCK1 LRCK CMPDAT Data input 1 BCK2 SCLK 1 LRCK 1 CLKIN Clock input CLKSEL CLK select FILT2 PLL loop filter 2 FILT1 PLL loop filter 1...

  • Page 82: Chapter Four Disassembly And Assembly Process

    Chapter Four Disassembly and Assembly Process Audio power amplifiers manufactured in BBK are largely identical but with minor differences and are mainly composed of decode board components, power board components, control panel components, CPU control board components, power amplifier board components, MIC board components and signal board components.

  • Page 83: Section One Pcb

    Chapter Cinque PCB board & Circuit diagram Section One PCB board 5.1.1 MIC Board XP14 L101 PH_SW C108 AGND +5VD P_RLY C100 C111 V101 C101 R111 C106 C107 N100 X100 - 78 -...
  • Page 84 5.1.2 SIGNAL Board C171 R152 XC104 C106 C109 XC101 XC103 R187 L101 L104 C105 XP17 DGND R102 R101 N103 N102 R103 R104 R149 R172 C155 C108 C107 R147 R171 C113 R151 R155 C122 C124 C128 R148 C154 C102 R134 C101 N106 C118 R130...
  • Page 85 5.1.3 Surface layer of DECODE Board XS16 XS17 XS14 L103 C101 C139 L108 C140 L118 C213 L116 L120 C219 L109 L110 R179 R178 C168 C195 R102 R140 C214 C198 C130 C211 C162 C182 L117 L115 R139 R104 C183 C154 C215 N109 C196 R181...
  • Page 86 5.1.4 Bottom layer of DECODE Board - 81 -...
  • Page 87 5.1.5 AMPLIFIER POWER Board V121 V106 N106 R114 R144 R115 R130 R145 R160 C159 R129 R128 C109 R158 C119 R159 -12V GND+12V C137 C135 R126 R127 R157 R156 XP13 C136 VD101 C134 C157 C149 C148 C120 C151 C150 C124 C125 C131 C130C129 C132...
  • Page 88 5.1.6 POWER Board C123 C124 C125 C121 R109 XL101 XL100 R120 L104 V103 R107V101 V102 R115 C120 R122 R114 C119 L102 R119 C115 C114 C113 R118 C118 R113 L103 L100 RLY0 C116 P_RC R111 OVER R106 R116 Y100 VD110 L101 R100 R108 R117...
  • Page 89 5.1.7 Key Scan Board N102 C109 VFD101 R107 C106 C107 R122 XP15 C104 C108 R116 C103 R109 R113 C102 R105 VD103 R104 R110 R114 R103 VD102 R111 R115 L101 XP10 VD101 R112 C101 C113 C114 6310T-2 2006 01 18 R108 V101 C105 C111C112...
  • Page 90 5.1.8 VIDEO Board R119 XC100 R118 R102 XL100 TC104 C102 TC101 V101 R103 C103 R111 R113 R112 V103 TC105 V100 N100 V104 R100 N101 C101 R101 TC102 X100 TC100 7310T-1 2006-01-18 - 85 -...
  • Page 91 C157 C108 L107 1U/16V R161 VD2.5 N107 R106 C159 CS4360 R107 R105 R108 R110 MUTEC1 DA_L SDIN1 AOUTA1 DA_L SDIN2 DA_R SDIN2 AOUTB1 DA_R SDIN3 MUTEC2 SCLK DA_SL C203 SCLK AOUTA2 DA_SL LRCK DA_SR LRCK AOUTB2 DA_SR MCLK MCLK N105 R120 R121 CS49326-3...
  • Page 92 N115 L115 24C02 R132 +5VD C174 L108 C163 VD101 R125 1N4148 C175 R133 R134 DA_SL C171 DA_SL C137 5.6K 3.9K R124 10U/16V 10U/16V C176 C162 C211 RR102 N112B 8*4.7K V101 5532 9014 R175 R135 4.3K C177 R173 R174 C164 10U/16V -12V N116 C192...
  • Page 93 +12V +12V V106 L102 47uH XS20 S8050 R139 1K R183 DATA C101 470K C102 47u/16V -12V +12V C110 R130 VD112 100K R101 1K 10u/16V R168 470K R131 TUNER_L 100K R184 N105A R102 47K N105B R129 C153 TUNER_R VD110 VD111 470K P_DISP R132 R103 47K...
  • Page 94 +12V R205 C210 47u/16V N203 PT2315 100/0.25W OK_CLK OK_CLK OK_DAT DATA OK_DAT AGND DGND VD201 C211 R218 20K R219 47K 9.1V C212 C224 TREBL LOUT 5.6n 4.7u/16V C213 C214 TREBR ROUT R220 10K C201 151 5.6n 4.7u/16V C226 C215 C216 100u/16V BOUT_R -12v...

  • Page 95: Line Out

    R171 47K LINE OUT R147 15K R172 1K R148 10K XS12 C154 XC104 P_RLY SW-OUT C155 10u/16V N106B R187 DGND R155 C146 5532 PH_SW C156 47P CON8 R173 22K -12V N106A SW-1 SW-1 R156 20K 5532 R174 SL-1 C157 10u/16V SL-1 SR-1 SR-1...
  • Page 96 +12V XS100 +12V DGND -12V R100 R101 N100 CON3 CD4052 V-OUT TC101 XC100 1015 R104 16V/10U V100 R102 100 A+8.2V R103 100 TC100 V-OUT VOUT 220U/16V A-8.2V A-8.2V V104 -12V A+8.2V V103 8550 8050 +12V R106 R105 2.2k VD100 2.2K C101 C103 VD101...
  • Page 97 VFD101 HL-D253 VD103 R112 R113 1N4004 47/0.5W R114 270/0.5W -30V 1/0.25W VD101 VD102 C107 C108 30V/1W 5.6V/0.5W 47u/35V 100u/35V XS10 CON5 R115 4.7k/0.25w -30V C101 +5VD R116 N102 HS0038A2 +5VD C109 C110 47u/16V R122 100 +5VD R106 R121 100/0.25W 100/0.25W +5VD SG12/KS12 VD104...
  • Page 98 C102 100u/16V L101 47uH N100A LM4880 C108 C106 330u/16V C103 R103 4.7K 10u/16V R109 C110 R101 C105 10u/16V R107 10K R105 R106 X100 4.7K XP14 P_RLY +5VD V101 DGND 8050 C109 R111 PH_R PH_SW PH_L CON8 N100B LM4880 C107 330u/16V R104 4.7K C104 10u/16V R110...
  • Page 99 C100 VD100 1N5404 VD101 1N5404 FL100 C101 VD102 TO SWITCH FL101 T6.3AL250V 1N5404 From TRANS C102 CON2 CT7 472 C103 T8AL250V C108 VD103 0.22u 8200u/63V C106 CON2 1N5404 TO TRANS 0.1u VD104 CON2 V-RLY 1N5404 C104 C109 C107 CON4 0.22u VD105 8200u/63V 0.1u...
  • Page 100 C103 47u/100V R117 Rly0 100/0.5W P_RC V132 VD104 R105 R106 R113 V112 Over C2073 2SD1047C 1N4148 CON4 R128 V114 C101 V105 2N5551 R101 R103 4.3K C108 2N5401 33p/500V R126 R129 R120 C110 V102 V103 10u/16V 0.25/7W 2.7K 2N5551 100/0.25W 1u/16V 2N5551 V101 R111...

  • Page 101: Chapter Six Bom List

    Chapter six BOM List MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE 6.1 SIGNAL DISPOSAL BOARD AV311T(RU) 5447861 0881743 IC F4558 DIP N105,N201,N202　　　　① 0882161 IC AZ4558 DIP N105,N201,N202　　　　① 0880445 IC 4558C DIP N105,N201,N202　　　　① 0880230 IC PT2399 DIP N204 0880417 IC CD4053BCN DIP N102,N103　　　　②...

  • Page 102: Signal Disposal Board Ai Segment

    20×14×40 BLACK,SINGLE HOLE AV310T 4000453 SELF-TAPPING SCREW BT 3×8H WHITE NICKEL PCB SEMI-FINISHED 5447420 1310T-2 AV310T(RU)-2 AI SEGMENT PRODUCT 6.2 SIGNAL DISPOSAL BOARD AI SEGMENT AV311T(RU) 5447420 2100003 CONNECTED CORDS F 0.6 SHAPED 7.5mm W25~W45 2100004 CONNECTED CORDS F 0.6 SHAPED 10mm W14~W24 2100007 CONNECTION CORDS F 0.6 SHAPEN 15mm...
  • Page 103 MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE R102,R103,R106,R107,R110,R111,R116 ,R117,R120,R121,R124,R125,R155,R17 00000529 CARBON FILM RESISTOR 1/6W47K±5% BELT 0,R174,R176,R178,R180,R182,R187,R2 07,R219,R171 00000729 CARBON FILM RESISTOR R128,R129,R132,R133,R168, R183 1/6W470K±5％ BELT 00001759 CARBON FILM RESISTOR 1/4W100O±5% BELT R205 00006239 CARBON FILM RESISTOR 1/2W220O±5% BELT R137,R138,R234 METAL OXIDE FILM 00102289 1/4W1O±5% BELT R145,R146,R167...

  • Page 104: Decode Board

    MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE VOLTAGE REGULATOR 05800329 10V±5% 1/2W BELT VD112 DIODE VOLTAGE REGULATOR 05800459 6.8V±5% 1/2W BELT VD101,VD102 DIODE 07800259 TRIODE 2N5401 BELT V101 07800329 TRIODE 9014C BELT V103,V104,V201 07800509 TRIODE S8050D BELT V102,V105,V106 1564008 PCB 1310T-2 6.3 DECODE BOARD AV321T(RU) 5448412...
  • Page 105 MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE R109,R112,R113,R114,R150,R151,R152 0090181 SMD RESISTOR 1/16W 100O±5% 0603 ,R153 R154,R162,R164,R166,R167,R168,R169 0090011 SMD RESISTOR 1/16W 470O±5% 0603 ,R170,R171,R173,R174,R178,R180 0090014 SMD RESISTOR 1/16W 1K±5% 0603 R176 0090015 SMD RESISTOR 1/16W 1.2K±5% 0603 R119 0090019 SMD RESISTOR 1/16W 4.7K±5% 0603 R105,R108 R111,R118,R120,R121,R123,R126,R129 0090023 SMD RESISTOR...

  • Page 106: Amplifier Board

    MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE 0881057 IC CS4360 SSOP N107 0882353 IC CS5340 TSSOP N108 0882413 IC CS8415A TSSOP N106 0882446 IC CS493264 PLCC N105 0882114 IC AMS1117-3.3 SOT-223 N109　　　　⑥ 0882505 IC VS1117-3.3 SOT-223 N109　　　　⑥ 0882485 IC AZ1117H-3.3 SOT-223 N109　　　　⑥...
  • Page 107 MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE 0000466 CARBON FILM RESISTOR 1/2W220O±5% SHAPED 12.5 R117,R125,R147,R155 0000489 CARBON FILM RESISTOR 1/6W24K±5% SHAPED 7.5 R175,R179 0000556 CARBON FILM RESISTOR 1/6W47O±5% SHAPED 7.5 R107,R108,R137,R138 0000562 CARBON FILM RESISTOR 1/6W620O±5％ SHAPED 7.5 R110,R140 0000610 CARBON FILM RESISTOR 1/6W200O±5% SHAPED 7.5 R113,R116,R143,R146 METAL OXIDE FILM...
  • Page 108 MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE 0780072 TRIODE 2SC5248E V132,V134　　　　⑾ 0780021 TRIODE 2SC2073 V132,V134　　　　⑾ 0780258 TRIODE KSC2073 V132,V134　　　　⑾ 0780138 TRIODE 8050D V101,V116,V131　　　　⑿ 0780050 TRIODE S8050D V101,V116,V131　　　　⑿ 0780275 TRIODE 2SD1047C V112,V127 0780274 TRIODE 2SB817C V113,V128 VOLTAGE REGULATOR 0580080 3.3V±5% 1/2W SHAPED 7.5 VD10 DIODE 0882646 IC...

  • Page 109: Surface Control Board

    5232281 INSULATED SPACER SET F 3×6×3.2 TDA7265 5231816 SOFT SPONGE SPACER 60×12×1.5 SINGLE-FACED,SOFT XP9,XP13 1564254 PCB 4138-2 6.6 SURFACE CONTROL BOARD AV311T(RU) 5448413 2100003 CONNECTED CORDS F 0.6 SHAPED 7.5mm W1~W9 2100006 CONNECTION CORDS F 0.6 SHAPED 12.5mm W10~W20 0000122 CARBON FILM RESISTOR 1/6W100O±5% SHAPED 7.5...

  • Page 110: Power Board

    5231493 SOFT SPONGE SPACER 12×10×9 DOUBLE-FACED,HARD PYROCONDENSATION 5233838 @F 22 UL SLEEVE 1564154 PCB 6310T-2 6.7 POWER BOARD AV311T(RU) 5448414 2100003 CONNECTED CORDS F 0.6 SHAPED 7.5mm W14,W16,W17,W22 W7,W8,W10,W11,W1,W2,L102,L103,L1 2100004 CONNECTED CORDS F 0.6 SHAPED 10mm 04,W13 2100007 CONNECTION CORDS F 0.6 SHAPEN 15mm...
  • Page 111 MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE 0200138 PORCELAINCAPACITOR 50V 104±20% 5mm C122 0620040 RADIATION DIODE 3B 4SC WHITE ISSUE BLUE VD104,VD105 0200174 PORCELAINCAPACITOR 50V 103±10% 2.5mm C121,C112,C123 0210022 TERYLENECAPACITOR 100V 223±5% 5mm C100,C101,C105,C111 0210029 TERYLENECAPACITOR 100V 104±5% 7mm C106,C107,C116~C120 0210031 TERYLENECAPACITOR 100V 224±10% 8mm C103,C104　　　　⒂...

  • Page 112: Microphone Holder Board

    RESISTOR GLUE LABELL NOT DMETAL OXIDE FILM 5180263 T8AL 250V FL101,FL102 RESISTOR GLUE LABELL 1564105 PCB @5100-5 CQC 6.8 MICROPHONE HOLDER BOARD AV311T(RU) 5448415 0882398 IC LM4880M SOP N100 0260019 CD CD11 16V10U±20%5×11 2 C103,C104,C105 0260027 CD CD11 16V100U±20%6×12 2.5...

  • Page 113: Video Frequency Board

    MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE 6.9 VIDEO FREQUENCY BOARD AV311T(RU) 5448416 2100003 CONNECTED CORDS F 0.6 SHAPED 7.5mm W1,W2,W3,W4,W5,W6,W9,W12 2100006 CONNECTION CORDS F 0.6 SHAPED 12.5mm W7,W11 2100007 CONNECTION CORDS F 0.6 SHAPEN 15mm 2100010 CONNECTED CORDS F 0.6 SHAPED 5mm 0260019 CD CD11 16V10U±20%5×11 2...

  • Page 114: Panel Unit

    3029795 AV310T(RU) SILVER WHITE,BRONZING （MIDDLE） DECORATIVE 3072239 AV311T(RU) IRON GREY BOARD(RIGHT) 3072001 DECORATIVE BOARD(LEFT) AV311T(RU) IRON GREY 3060396 PLASTIC DECORATIVE LOOP AV138 SILVER WHITE 3072240 FILTER AV310T（RU）LENS COVER 3029208 GUIDING LIGHT RING AV138 TRANSPARENCE 3024848 BIG KNOB AV227 SILVER WHITE...

  • Page 115: Program Cpu

    MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE 4000120 SELF-TAPPING SCREW PB 3×10 COLOR ZINC 4400028 NUT OF POTENTIOMETER PCB SEMI-FINISHED 5448413 6310T-2 AV311T(RU) PRODUCT PCB SEMI-FINISHED 5448415 9310T-0 AV311T(RU) PRODUCT 6.12 PROGRAM CPU AV311T(RU) 0890284 0881591 IC SM8958AC25P DIP N116 5156402 SIGN STICKER CPU311TRU-0 6.13 SN LABEL...
  • Page 116 MATERIAL MATERIAL NAME SPECIFICATIONS LOCATION CODE HIGH TEMPERATURE 5231456 LENGTH:15 YARD WIDTH:24mm MASKING PAPER 5180452 QA ENVELOPCASE STICKER QA PASS 110×45 - 111 -...

Table of Contents