JVC RX-D201 Скачать руководство пользователя страница 52

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Quick check PWM waveform

After power is turned on, we could measure 7 channels PWM waveform

at four connectors easily. Any abnormal of PWM waveform may be
caused by PWM IC or power output section (MOSFETs & drive ICs).

RED PIN

PWM at two
end pins on
3connectors

7 channels
(CN521)analog
audio signal.

PWM waveform 4.2V p-p

Master Clock 5V p-p

AMP -B

‘AMP –B’+4.2V

FL----FR

SL----SR

SBL--SBR

FW323
PIN 4

820 Ohm-

Without AC power the resistance
form ‘AMP_ -B’ to each of 7 CHs.
PWM pin should be 820 Ohms. If
is too low, the drive IC at the next
power amp stage is defective.

Содержание RX-D201

Страница 1: ...TRAINING BOOK FOR DIGITAL AMPLIFIER RECEIVER RX D SERIES By JSCA ENGINEERING DEPARTMENT JUNE 2006 Second Edit November 2006 ...

Страница 2: ...LL POWER SUPPLY POWER PROTECTION DIGITAL AMPLIFIER AUDIO DIGITAL PROCESS VIDEO DIGITAL PROCESS HDMI USB WIRE OR WIRELESS THESE FEATURES APPLY TO RX D401 402 701 702 ONLY WIRELESS APPLIES TO RX D301 302 701 702 ONLY ...

Страница 3: ...OVERALL BLOCK DIAGRAM Signal Flow and DC Power Supply IN DIGITAL SIGNAL ANALOG SIGNAL DVD A Multi ...

Страница 4: ...is not available on models RX D201 202 The output format is the same as the digital input signal other audio input signals including HDMI USB cannot go through the DIGITAL OUT The front left right speaker out audio is applied to headphones The CPU will turn off the 7 speaker relays after it detects the headphone jack is plugged in The DVD analog multi channel input audio bypasses the DSP board and...

Страница 5: ...POWER SUPPLY BLOCK DIAGRAM AMP_ B switch regulator ...

Страница 6: ...POWER SUPPLY 1 5 CN530 5 Q171 CN114 3 D 5V_DSP CN114 4 R152 12V_RY CN530 7 PWM PCB IC201 301 IC401 801 Master Clock PCB Regulate PCB ...

Страница 7: ... B 12V all vary along with output volume referenced to ground The B voltage is 50v 62v referenced to ground The label DCDC_ B 12V DC voltage means this is the DC voltage supply to the DCDC converter circuit the 12 DC refers to B if referenced to ground it is 38v 50v The B and AMP B voltages are higher in models RX D402 702 because the output power is higher than RX D201 202 The 2 5v DCDC_ 12V DCDC...

Страница 8: ...POWER SUPPLY 2 5 CN114 3 D 5V_DSP 4 D 5V_HDMI CN130 The D 5V_HDMI for models RX D401 402 702 only ...

Страница 9: ...ant parts are Q1101 1102 D1107 1108 L1101 1102 C1117 1118 2 Switch driver circuit IC101 3 DC DC Converter Control Board DC DC CONVERTER CONTROL MOSFET DRIVE IC101 MOSFET SWITCH Q1101 1102 _ 1 3 2 AMP_B 7 CHANNEL POWER AMP AMP_ B LEVEL CONTROL CPU IC501 SOUND LEVEL DETECT POWER SUPPLY 3 5 ...

Страница 10: ... AMP_ B switch regulator 1a The CEMF current via D1107 8 loop after Q1101 1102 switch off IC101 B AMP_ B B AMP_ B B 12V 12V V feedback V out_det POWER SUPPLY 3 5 ...

Страница 11: ...Tip to measure the outputs of Q1101 1102 POWER SUPPLY 3 5 ...

Страница 12: ...tion 1 Q1101 turned on 2 D1107 turned on by CEMF 3 Damped LC oscillation Q1101 is switched off during period 2 and 3 0 V AMP B 30V Yellow at G of Q1101 channel 2 Blue at S of Q1101 channel 1 There is 10v At Gate higher than Source for switches Q1101 on B 60V Damped oscillation D1107 on Q1101 on 1 2 3 POWER SUPPLY 3 5 ...

Страница 13: ...at gate and drain of Q1102 after power is turned on Yellow at G of Q1102 Both channel X 10 Both channels are DC coupling Blue at D of Q1102 channel 2 DC 0v line B About 63v AMP B About 30v About 10v pulse at Gate of Q1102 when switch on POWER SUPPLY 3 5 ...

Страница 14: ...S resistance between Drain and Source will increase when VGS drop to below 8v and it causes the MOSFET to get very hot and damage MOSFETs have a thin layer of silicon dioxide this insulating layer is kept as thin as possible to give the gate more control over drain current Because the insulating layer is so thin it is easily destroyed by excessive gate source voltage The transient voltages by indu...

Страница 15: ...ive IC or peripheral parts may be defective or the power supply may not be functioning properly When handling the MOSFET try not to touch the pins with your fingers It is preferable to use anti static iron when soldering the MOSFET When the pair of MOSFETs are damaged sometimes the drive IC becomes defective too Check the drive circuit before replacing the MOSFETs to prevent the power MOSFET from ...

Страница 16: ...7 is high power Schottky Diode with heat sink If You mean with DC Volt meter but if you use Oscilloscope you can see the negative peak is clipped This clipping is by D1107 WHY DC METER CHECK B 70 V ANP B 30V 30 V _ Because there is a large charge current through D1107 that forced by CEMF POWER SUPPLY 3 5 ...

Страница 17: ...at of the input voltage therefore opposes the change of main current flow in the circuit it is called counter electromotive force CEMF The CEMF is then given by the sign means polarity reverse Where i is the current T is time and L is the inductance L1101 of the circuit When the dt is very and very small the CEMF voltage will become extremely high If diode D1107 is defected it can cause damage to ...

Страница 18: ... AMP_ B switch regulator 2 IC101 Drive IC for Q1101 1102 B AMP B AMP B B 1 6 5 4 2 3 7 8 B B_ 12V DCDC 12V C1122 Audio Level detector CPU PWM POWER SUPPLY 3 5 VERAG DC 42v ...

Страница 19: ...ltage Averag e 0v INPUT AVERAGE DC 30V OUTPUT AVERAGE DC 1 Capacitor coupling block out the input DC level 2 The DC clamper recovers the DC level at output 3 The DC clamper adds DC level to the output Averag e 30v In fact it is about 29 3v due to diode forward bias drop 0V Averag e 30v 29 3V Averag e 42v 12v 42V 12v ...

Страница 20: ...ltage from VS to VB through 0 33uF capacitor C1122 This causes DC level at pin2 VB to be always approximately 11v higher than pin 4 VS The UV under voltage detector is built in the IC if the power supply voltage drops below the threshold level about 7 5 8 3 v The IC stops output If IC101 was shorted sometimes peripheral resistors are burnt out also POWER SUPPLY 3 5 ...

Страница 21: ...Waveform 3 at AMP_ B switch regulator Always about 11v different between pin 2 and pin4 of IC101 DC 0v line Blue at S of Q1101 channel 1 Yellow at pin 2 of IC101 R1110 About 11v POWER SUPPLY 3 5 ...

Страница 22: ...Tip to measure IC101 CN115 P 1 DCDC 12V CN152 P 4 Vout_DET CN115 P 5 B CN115 PIN4 B_ 12V CN152 P 11 Vout_DET POWER SUPPLY 3 5 ...

Страница 23: ...Error amp This feedback voltage for regulate the AMP B Q1501 Buffer And V out detector AMP_ B switch regulator 3 POWER SUPPLY 3 5 ...

Страница 24: ... 2 57v Then the low state will input to pins 66 and 90 of IC501 OUT_LEVEL 1 and OUT_LEVEL 2 This causes IC501 to output a low state on pins 62 and 65 V CHANGE_1 and V CHANGE_2 to DCDC CONVERTOR CONTROL board These low state inputs through CN151 pin 7 8 switch off Q1151 Q1152 and it effects the DC level at pin 1 of IC111 error amp Finally it changes the PWM pulse s duty cycle duration at IC112 pin ...

Страница 25: ... in the IC supply to digital circuit inside and outside of IC 7V 7V Use of the built in 2 5V regulated supply to the inside and outside digital circuits especially for master clock generation circuit prevents digital noise interference to analog GND ...

Страница 26: ...1 1 1 4 5 IN 5V IC792 OUT 3 3 V ADJ 1 8V 2 IN 5V IC691 OUT 3 3 V ADJ 1 2V 2 1 4 5 IN 5V IC791 OUT 3 3 V ADJ 1 8V 2 C661 DSP IN 5V IC692 OUT 3 3V CN662 3 CN661 3 APPLY IN BOARD IN 9V IC793 OUT TX5V 1 5 FRONT INPUT BOARD CN961 3 USB BOARD CN11 wireless 3 IN 3 3V IN 3 3V DC 3 3V 1 8V 1 2V and TX5V ...

Страница 27: ...the voltage is 1 2v at pin 4 of IC691 and others are 1 8v IC793 outputs TX5V to the HDMI out jack this 5v is sent to the outside video monitor for HDMI connection detect without this 5v the monitor cannot accept signals from the HDMI input The 2 5v and 2 5v also are not produced in main PCB they are from the PWM PCB shown on the previous page ...

Страница 28: ...PROTECTION CICUIT 1 8 FOR MODELS RX D201 202 301 302 Where to measure 7 protect inputs Not use Q212 213 R226 NI ...

Страница 29: ... other RX D series models and can be used as a reference for troubleshooting There are 7 protection input pins only 5 pins used in these 4 models on CPU IC501 any of them could cause the protection circuit to be triggered and shut down the power The marked voltages are 5 10 tolerance The underline marked voltages can be measured in power standby mode e g 2 01v 4 83v but have to be checked again on...

Страница 30: ...tect inputs Not use because Q212 213 and R220 are NI For models RX D401 402 701 702 These 3 pins are NOT used for protection input on models RX D401 402 701 702 THERMAL For models RX D401 203 701 702 Include 7v DSP D 5V D 5V_HDMI DETECTION 2 01v 4 ...

Страница 31: ...1 Any of them could cause the protection circuit to be triggered and shut down the power The marked voltages have tolerance 5 10 The underlined voltages could be measured in power standby mode e g 2 01v 4 80v but have to confirm them again once power is ON PROTECTION CICUIT SUP 2 ...

Страница 32: ...MN101C49KNR1 for models MN101C49GNP for models RX D401 402 701 702 RX D201 202 301 302 IC501 DIFFERENT PROTECTION CICUIT SUP 3 ...

Страница 33: ...PROTECTION CICUIT SUP 4 S S S stands for Smart Surround Setup function This function is adopted on model RX D702B only ...

Страница 34: ...PROTECTION CICUIT 2 8 Protection 1 2 7V DETECT DSP D 5V DETECT inputs IC501 pin 4 5 or 6 7 becomes Low near 0v when 7v or D 5v DSP is missing 7 ...

Страница 35: ...PROTECTION CICUIT 3 8 Protection 3 4 TH1 TH2 DETECT inputs The voltage drops at pin 8 of IC501 when unit gets hot ...

Страница 36: ...N 5 REG DET input This input detects the regulated voltages A 5V_Vi A 5V_DSP and 9V_Vi_Tu Any of these three voltages missing can cause one of three transistors Q162 Q163 Q161 to turn off and give a LOW state input at pin 28 of IC501 ...

Страница 37: ...PROTECTION CICUIT SUP 5 HDMI 5V DETECTOR 7V DETECTOR D 5V DSP DETECTOR 3 56v REG DET input for models RX D401 402 701 702 ...

Страница 38: ...e regulated voltages A 5V_Vi A 5V_DSP 9V_Vi_Tu 7V D 5V DSP and d 5v HDMI If any of these six voltages are missing it may cause one of six transistors Q162 Q163 Q161 Q505 Q506 and Q507 to turn off and to give a LOW state input at pin 28 of IC501 PROTECTION CICUIT SUP 6 ...

Страница 39: ...3 Q285 R290 0 6V 0 7V D1171 7 CNANNELS R270 370 870 1270 1370 470 1470 R289 This protection input including AC DETECT OUTPUT OVER CURRENT DETECT OUTPUT DC to speaker DETECT If any of the three above condition occurs it would cause a LOW state inputs to pin 31 of IC501 AMP B ...

Страница 40: ...ON There are 7 resistors connected to 7 channel speaker outputs just after low pass filter The other side of these resistors are tied together and connected to the base of Q284 and Q285 If a DC voltage occurs at any audio speaker output line a will turn on Q285 or a turns on Q284 and Q283 A LOW occurs at collector of Q285 when Q285 or Q283 are turned on The LOW state is sent to pin 31 of IC501 thr...

Страница 41: ...tection 6 detail The OC DT SD functions in the digital amplifier driver IC IRS20124S X DC voltage to select DT mode PWM in PWM out Over Current protect output Over Current sensor input Over Current sensor top bottom setup levels ...

Страница 42: ...time and 2 shutdown There are 4 modes of DT pre programmed in IC The IRS20124 determines its operation mode based on the voltage applied to the DT SD pin An internal comparator translates which mode is being used by comparing internal reference voltages Since IRS20124 has internal dead time generation if independent inputs for HO and LO are no longer provided shutdown mode is the only way to turn ...

Страница 43: ...PROTECTION CICUIT 6 8 Protection 7 Not use PWM_TH DETECT input This protection input is not used on 2005 RX D series model because Q212 213 and R226 are not installed LOW V THERMAL WARNING NI NI ...

Страница 44: ...the protection input voltages before the unit powers off See the next page for the measuring locations on the PCB You could check all of protection input voltages at indicated locations without extension cables The voltages that are underlined V can be measured in power standby mode but have to be checked again after power on ...

Страница 45: ...PROTECTION CICUIT 8 8 4 39V 0 02V ...

Страница 46: ... can work without the HDMI and OSD RX D701 702 PCBs It is easier to check on the A V input system control section when troubleshooting the power and protection circuit HDMI PCB removed Audio Video signal input and system control section OSD PCB removed ...

Страница 47: ... can turn over the main PCB and power on the unit Every function should be working except the headphone front USB and subwoofer out functions because these 3 connectors are unplugged only It may need adding a ground connection to chasses for stable operation the unit when perform the troubleshooting ...

Страница 48: ...ents 1 Measure points in schematic diagram PWM IC201 AMP B AMP B Q261 Q262 6 Q361 Q362 4 Q861 Q862 2 4 Q461 Q462 8 Q1261 Q1262 6 Q1361 Q1362 2 Q1461 Q1462 AMP B AMP B CN222 PIN14 on M volume CN251 CN262 Q1101 Q1102 B B PWM IC801 ...

Страница 49: ... there is a high probability for the driver IC to be damaged also and the Gate 47 Ohm resistor to be burnt out You could quick check the MOSFETs 14 outputs and 2 Amp B and 7 diodes without removing the PCB When checking the 7 diodes select the DIODE MODE on multimeter minus negative probe contacts pin14 of CN222 plus positive probe contact pin 2 4 6 8 of CN251 and CN262 respectively ...

Страница 50: ...ine if it is shorted CN115 PIN 2 B PIN 5 B AMP_ B AMP_ B CN423 7V CN251 CN262 Measure the resistance if less than 100 Ohms it s NG For Example If the resistance between B B and AMP_ B AMP_ B is less than 100 Ohms the Q1101 Q1102 is shorted See next slide to know the measure points on schematic for all of other components CN222 PIN14 On the bottom ...

Страница 51: ...d out the shorted components before replacing the fuse and turning on the power If F103 is blown it is very likely caused by shorted MOSFETs at one or more channel s power output or may be by shorted on Q1101 and Q1102 If 7v was shorted the master clock will be missing also ...

Страница 52: ...power output section MOSFETs drive ICs RED PIN PWM at two end pins on 3connectors 7 channels CN521 analog audio signal PWM waveform 4 2V p p Master Clock 5V p p AMP B AMP B 4 2V FL FR SL SR SBL SBR C FW323 PIN 4 820 Ohm Without AC power the resistance form AMP_ B to each of 7 CHs PWM pin should be 820 Ohms If is too low the drive IC at the next power amp stage is defective ...

Страница 53: ...CHECK 7 AMP DRIVE IC s AMP_ B AMP_ B 12V 800 Ohms MASTER CLOCK PCB PWM input 820 Ohm CN202 PIN 2 AMP_ B PIN 3 AMP_ B 12V AMP_ B 12V is the Vcc for all AMP drive ICs ...

Страница 54: ...mended to either turn the volume level to 0 or to not use an audio signal input the PWM waveform should normally be at 50 duty cycle Select the FM mode and tune to a station with good reception We can measure the analog audio signal at CN521 even with CN111 unplugged no B power ...

Страница 55: ... Check analog audio and PWM on all channels FL C FR PWM BOARD 1 SR SL SBL SBR PWM BOARD 2 Master clock On back PWM signal 4 2 4 6v p p CN521 CN683 Pin Ch 1 FR 3 FL 4 SW 5 SR 6 SL 7 C 8 SBR 9 SBL Analog audio 0 6 1 2v p p 8Channels FR channel ...

Страница 56: ... is recommended to select the source on FM mode and the DAP on ALL CH STEREO mode Measure all the 7 channels analog audio at CN521 The PWM is 50 duty when no audio input or the master volume at 0 Increasing the audio level causes PWM duty cycle to vary The FR front right channel is the only PWM signal that cannot be measured in the front of PCB it is at one end of R317 that close to the IC201 of b...

Страница 57: ...QUICK CHECK TABLE 1 2 ...

Страница 58: ...QUICK CHECK TABLE 2 2 SHORT OR OPEN ...

Страница 59: ...nd safely Check the IC101 circuit 1 6 5 4 2 3 7 8 B B_ 12V DCDC 12V 200 210 KHZ 4 2 5V P P 200 210 KHZ 11V P P 200 210 KHZ 12V P P B_ 12v B 11 3v 0 8v Since Q1101 is disconnected there is no floating voltage at pin 4 of IC101 The power supply for the high channel drive is not floated IN AT PIN 5 IN AT PIN 6 OUT AT PIN 3 OUT AT PIN 8 ...

Страница 60: ... B and B_ 12v appear at pin 2 1 and 7 and verify the input 4 5V p p PWM signal at pin 5 and 6 If R1115 was opened the PWM signal becomes 13v p p If there is no out put from HO and LO pin 3 and 8 then IC101 is bad If the output PWM level is less than 10V or bed waveform IC101 or peripheral components maybe defective It is possible to measure IC101 from the component side of the main PCB see the nex...

Страница 61: ...ooting With Disconnected Q1101 1102 2 2 Master clock 400 420 KHz 5v p p V Change 1 and 2 low V feedback Vout_det V_out and AC detector AMP B shut down 200 210 KHZ CHECK DCDC CONVERTER CONTROL SECTION Add 47k GND ...

Страница 62: ...sistors turn off If the PWM too wide at IC113 pin11 it will be turned on Q1173 and shuts off the AMP_ B Connect the Vout_DET CN152 pin 4 to ground or to 12v through 1K Ohm resistor This makes PWM duty cycle change at CN152 pin 11 Otherwise this board is defective CN152 has 12 pins on models RX D401 402 702 the 12th pin is for SSS Smart Surround Setup function ON OFF The purpose to add 47k Ohm resi...

Страница 63: ...ges marked on IC251 pins are refer to AMP B the blue color is under normal condition the red color shows the different when 2 MOSFET are de soldered This is front L R channels the DC level at pin2 4 are different on other 5 channels on RX D702 these DC voltages are different too AMP B_ 12V 10 6V M CLOCK M CLOCK M CLOCK 70V P P 10V P P 10V P P 4 2V P P ...

Страница 64: ...OSFETs at the audio output channels The AMP B voltage varies from 25 to 40V depending on the models and output level Since the AMP B voltage varies it is recommended to use AMP B as reference common point to measure DC level at IC251 When referred to chassis ground the voltage readings will be different from the listed values Since the voltage at pin 10 11 and 12 are floating the DC level varies a...

Страница 65: ...e Width Modulation PWM is a method of digitally encoding analog signal levels In the process continuously varying value of input audio signals is detected based on the reference voltage Vref by comparing the signals with triangular waves master clock ...

Страница 66: ... that a Digital Amplifier gives us many benefits such as miniaturization light weight and high efficiency However we hear analog sound from speakers that vibrate air instead of digital signals of 0 and 1 To realize a hyper digital amplifier digital signals must be returned to analog sounds as efficiently and accurately as possible ...

Страница 67: ...DIGITAL AMPLIFIER 4 8 Problems of a digital Amplifier ...

Страница 68: ...DIGITAL AMPLIFIER 5 8 solving the problem 1 D1 A2 A1 D2 ...

Страница 69: ...DIGITAL AMPLIFIER 7 8 solving the problem 2 Hybrid Feedback Digital Amplifier Ver III also features low voltage power supply which ensures stable signal transfer AMP AMP DC DC CONVERTER CONTROL ...

Страница 70: ...DIGITAL AMPLIFIER 8 8 solving the problem 3 Three features ...

Страница 71: ...DIGITAL AMPLIFIER 8 8A solving the problem 3 Feature 1 ...

Страница 72: ... the problem 3 Feature 2 Synchronization by an External Clock Slight gap of frequencies among channels causes specific noise To prevent this the JVC amplifier uses an external clock which synchronizes the operations of all channels ...

Страница 73: ... I I I I I 590 610 780 820 980 1020 1180 1220 1380 1420 1580 1620 MASTER CLOCK TWO FREQENCIES 400 KHz and 420 KHz IN AM RADIO MODE IC 501 pin 61 frenqency control 5v 0v 400 400 400 400 400 400 420 420 420 420 420 420 400 SELECTED MASTER CLOCK FREQENCY KHz ...

Страница 74: ...DIGITAL AMPLIFIER 8 8C solving the problem 3 Feature 3 ...

Страница 75: ...DIGITAL AMPLIFIER 3 8 Block Diagram for RX D Series ...

Страница 76: ...DIGITAL AMPLIFIER 6 8 Double D A Feedback Diagram Power amp A1 A2 D1 D2 PWM PCB From Master Volume This diagram is for front left channel other channels are similar ...

Страница 77: ...GITAL AMPLIFIER 6 8 Power Amplifier Diagram This diagram is for front left channel the other channels are similar AMP B 12V 13 23 30V P to P 50 70 84V AMP B 25 35 42V AMP B 25 35 42V LC LPF From PWM Board ...

Страница 78: ...MASTER CLOCK VS INPUT AUDIO PWM The PWM duty is 50 when input audio level is zero 0v INPUT AUDIO SIGNAL RED SINE WAVE MASTER CLOCK ...

Страница 79: ...ER CLOCK S AMPLITUDE AND DUTY CYCLE BEFORE LPF OUTPUT AUDIO AMPLITUDE AFTER LPF P P 48V P P 80 6V P P 84V P P 50V The higher amplitude of the same duty cycle PWM the output audio s amplitude is higher if the pulse width ratio are same ...

Страница 80: ...AUDIO DIGITAL PROCESS 1 8 ...

Страница 81: ...low The sound quality of a signal depends on the following two factors when the signal is converted from analog to digital Quantization word length bits which determines resolution or the expression of music in the amplitude domain Sampling frequency which determines the frequency response or the expression of music in the frequency domain ...

Страница 82: ...AUDIO DIGITAL PROCESS 3 8 PROBLEM 1 An analog signal of a very faint strength cannot be accurately recreated by A D and D A conversion Good Distortion ...

Страница 83: ...AUDIO DIGITAL PROCESS 4 8 PROBLEM 2 A high frequency analog signal cannot be accurately recreated by A D and D A conversion Good Distortion ...

Страница 84: ...AUDIO DIGITAL PROCESS 5 8 CC Converter 1 Bit Expansion Increasing quantization resolution for low level signals ...

Страница 85: ...AUDIO DIGITAL PROCESS 6 8 CC Converter 2 Range Expansion ...

Страница 86: ... exclusive DSP ONE CHIP REPLACING TWO DECODE FORMATS Dolby Digital Dolby Digital EX Dolby Pro Logic IIx DTS DTS ES DTS 96 24 DTS NEO 6 FUNCTIONS DAP 3DPHONIC 3D Headphone DSP Digital Equalizer Dynamic Range Control Bass management ...

Страница 87: ...Audio Input output Path USB To ...

Страница 88: ...Audio Input Process Path IC681 IC610 IC661 IC620 IC685 IC686 IC630 IC671 RX D401 402 701 702 ...

Страница 89: ...DIGITAL PROCESS 8 8 DSP BLOCK DIAGRAM Analog signal Digital signal USB 7 1 channels To Master Volume USB wireless Two Channel From A V In HDMI AUDIO DATA 13 16 43 49 FRONT_OPT 54 20 23 27 cc conv IC681 FR FL ...

Страница 90: ...Master Volume Section Block Diagram RX D series Audio Video signal input and system control section PWM modulator section Bypass DSP From DSP Go to PWM Analog Audio ...

Страница 91: ...ox DVD player or A V receiver and an audio and or video monitor such as a digital television DTV over a single cable HDMI supports standard enhanced or high definition video plus multi channel digital audio on a single cable It transmits all ATSC HDTV standards and supports 8 channel digital audio with bandwidth to spare to accommodate future enhancements and requirements VIDEO PROCESS HDMI 1 7 Wh...

Страница 92: ...VIDEO PROCESS HDMI2 7 Video Connection for RX D401 D402 HDMI AUDIO HDMI VIDEO IC771 IC781 ...

Страница 93: ...VIDEO PROCESS HDMI3 7 Video Connection for RX D701 D702 HDMI AUDIO HDMI VIDEO IC771 IC781 ...

Страница 94: ...EO PROCESS HDMI4 7 HDMI BLOCK DIAGRAM Analog video in VCR DBS IN DVD DVR IN HDMI OUT HDMI video HDMI audio All analog formats video Analog video 480p after A D Other converted to 480p by IC781 YCbCr 4 2 2 ...

Страница 95: ...Fully HDMI Compliant Source Device A V Receiver Monitor Device All A V devices should be fully HDMI compliant to avoid troubles ...

Страница 96: ...d every 2 seconds If Ri does not match its own internally generate Ri value then HDCP authentication fails and the signal is muted HDMI Communication 1 16 2006 IY ver1 Receiver If the upstream content is protected HDCP authentication is performed 5V TV Hot Plug Detect EDID 5V HDMI Tx HDMI Tx Source Receiver Aksv Bksv Bksv Cksv Ri Rj Hot Plug Detect EDID capabilities of downstream TV If the source ...

Страница 97: ... HDMI 6 7 The IC781 is the i p converter but also as well as a renowned high performance device It features a host of advanced technologies for noise reduction and reproduction of high definition pictures including ...

Страница 98: ...VIDEO PROCESS HDMI 7 7 One e g for DCDi processes on the picture 3D Deinterlacer After DCDi process Smooth diagonal lines Before DCDi process The jagged edges on diagonal lines ...

Страница 99: ...USB WIRE OR WIRELESS1 5 All of RX D series equipped wire USB feature ...

Страница 100: ...zband permits transmission of uncompressed signals for lossless reproduction 2 Use of DSSS Direct Sequence Spread Spectrum modulation technology enables transmission of uncompressed signals with superior resistance against noise which retains superb sound quality 3 Corresponds to 16 bit 32kHz 44 1kHz 48kHzsampling rates ...

Страница 101: ...d the receiver share a specific user ID This means devices without the same ID cannot receive signals from the transmitter And when you replace the transmitter User ID Learning Function would be convenient This function lets you easily set up a new user ID so that the unit can receive signals from the new transmitter ...

Страница 102: ...omatically detects electric waves from other devices wireless LAN for example and selects a band that won t be interrupted by the other signals When the signal transmission is interfered by other waves while using the unit simply press and hold the Channel Key on the transmitter for a few seconds The transmitter automatically switches the band to a one that won t be interfered by the waves ...

Страница 103: ...USB WIRE OR WIRELESS5 5 BLOCK DIAGRAM 45 54 IC697 codec S receiver 44 IC661 DSP 27 CN683 SW D A C AMP ICS DSP Board Front input Board DSP 7 1 CH ...

Страница 104: ...Thank you ...

Страница 105: ...e 3 On the RX D series of amplifier in this training book there are more than 7 protection input pins on CPU IC501 any one of them can trigger the protect function and cause the power shut down True False 4 CC Converter is abbreviation of Compensative Compression Converter True False 5 On the RX D series of amplifier in this training book with digit audio input you can record the analog audio form...

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