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JVC RX-D Series Training Book
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JVC RX-D Series Training Book

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

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Summary of Contents for JVC RX-D Series

  • Page 1 TRAINING BOOK FOR DIGITAL AMPLIFIER RECEIVER RX-D… SERIES By JSCA ENGINEERING DEPARTMENT JUNE 2006 Second Edit November 2006...

  • Page 2: Table Of Contents

    CONTENT • OVERALL • 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.
  • Page 3 OVERALL BLOCK DIAGRAM Signal Flow and DC Power Supply DVD A. Multi =DIGITAL SIGNAL =ANALOG SIGNAL...
  • Page 4 OVERALL BLOCK DIAGRAM note • A AUDIO means Analog audio, D-OUT means Digital audio output. • The HDMI outputs video only, even when the HDMI input has both video & audio data. In the future models, the HDMI will output both A &...
  • Page 5 POWER SUPPLY BLOCK DIAGRAM ‘AMP_+/-B’ switch regulator...
  • Page 6 POWER SUPPLY 1/5 Regulate Master Clock PCB IC201/301 IC401/801 PWM PCB CN114-3 D+5V_DSP Q171 CN114-4 CN530-5 R152 +12V_RY CN530-7...

  • Page 7: Power Supply

    POWER SUPPLY 1/5 note • The power supply circuits for 2005 year of RX-D… series are similar. One main difference is the ‘D+5V_HDMI’ is not in models RX-D201/202/301/302. • There are two AC power transformers in the unit. 1. T101 for standby power: supplies D+5V and B+5V_Mi DC power for CPU IC501 and RY+9V (power ON/OFF relay circuit).
  • Page 8 POWER SUPPLY 2/5 (CN130) CN114 D+5V_DSP D+5V_HDMI The ’D+5V_HDMI’ for models RX-D401/402/702 only.
  • Page 9 The ‘AMP_+/-B’ switch regulator POWER SUPPLY 3/5 composes three sections: 1. MOSFET switch circuit (the important parts are Q1101/1102, D1107/1108, L1101/1102, C1117/1118…) 2. Switch driver circuit-IC101. 3. DC-DC Converter Control Board DC-DC MOSFET MOSFET CONVERTER DRIVE AMP_B SWITCH CONTROL IC101 Q1101/1102…...
  • Page 10 ‘AMP_ +/-B’ switch regulator-1a POWER SUPPLY 3/5 CEMF current (via D1107/8) loop after Q1101/1102 switch off. AMP_+B +12V -B +12V IC101 AMP_-B...
  • Page 11 POWER SUPPLY 3/5 Tip to measure the outputs of Q1101/1102...
  • Page 12 POWER SUPPLY 3/5 Waveform (1) at ‘AMP_+/-B’ switch regulator There is 10v At Yellow at G of Q1101 –channel 2 Gate higher than Blue at S of Q1101- channel 1 Source for switches Q1101 (+60V.) AMP+B (+30V.) Q1101 on Damped oscillation 0 V.
  • Page 13 POWER SUPPLY 3/5 Waveform (2) at ‘AMP_+/-B’ switch regulator Both channels are DC coupling DC 0v line Blue at D of Q1102- channel 2 About -30v About 10v Yellow at G of Q1102 pulse at Gate of Both channel X 10 Q1102 when About switch on...
  • Page 14 POWER SUPPLY 3/5 KNOW THE MOSFET 2SK3599-01MR and IRFB4212 are Enhancement-type N-channel MOSFET • Enhancement-type MOSFET is also known as normally off (when V =O, Drain current=o) MOSFET. • N-channel MOSFET: The more positive the gate voltage (V ), the greater the drain current. •...
  • Page 15 POWER SUPPLY 3/5 • If the positive drive pulse at Gate is less than 8 volts (refer to Source), the MOSFET will get very hot to damage. If the drive pulse is not sharp or is very noise, it makes MOSFET very hot also. •...
  • Page 16 POWER SUPPLY 3/5 ‘AMP_ +/-B’ switch regulator-1b CEMF charge path +B 70 V (+30 V) * ANP+B 30V In this circuit it, seems no current through D1107, but D1107 is high power Schottky Diode with heat sink, If You mean with DC Volt meter but if you use Oscilloscope you can see the WHY? * negative peak is clipped.
  • Page 17 POWER SUPPLY 3/5 What is CEMF? In the relay driver circuit, always has WHY? a diode parallel with coil, Counter-Electromotive Force (CEMF) is a voltage developed in an inductor network by a pulsating current or an alternating current. The voltage's polarity is at every moment reverse that of the input voltage, therefore opposes the change of main current flow in the circuit it is called counter-electromotive force (CEMF).
  • Page 18 POWER SUPPLY 3/5 ‘AMP_ +/-B’ switch regulator-2 IC101- Drive IC for Q1101/1102 DCDC +12V VERAG DC 42v C1122 AMP+B -B_+12V AMP-B Audio Level detector...
  • Page 19 Bootstrap Voltage USE THE DC CLAMPER 1. Capacitor coupling block out the input DC level. Bootstrap Voltage OUTPUT The additional AVERAGE higher positive voltage added to Averag the low DC voltage 2. The DC clamper recovers the DC level at output. * Averag Averag +30v...
  • Page 20 POWER SUPPLY 3/5 • IC101 is high power MOSFET drive with independent high and low side reference output channels. • The power supply for the high channel drive is floated. • The bootstrap voltage from VS to VB through 0.33uF capacitor C1122. •...
  • Page 21 POWER SUPPLY 3/5 Waveform (3) at ‘AMP_+/-B’ switch regulator Yellow at pin 2 of IC101 (R1110) About 11v. Blue at S of Q1101- channel 1 DC 0v line Always about 11v different between pin 2 and pin4 of IC101.
  • Page 22 POWER SUPPLY 3/5 Tip to measure IC101 CN115 P-1 DCDC +12V CN115 PIN4 –B_+12V CN115 P-5 CN152 P-11 CN152 P-4 Vout_DET Vout_DET...
  • Page 23 POWER SUPPLY 3/5 ‘AMP_ +/-B’ switch regulator-3 Q1501- Buffer This feedback voltage for regulate the AMP. +B Error amp And ‘V out’ detector...
  • Page 24 POWER SUPPLY 3/5 CPU IC501 PIN 62 PIN 65 PIN 7 PIN 8 AMP +/- B CN151 • The AMP + B voltages vary from about +25v to +42v; depending on the power output of 7 channels at final stage before speaker terminal (The voltages are higher in models RX-D401/402/702) •...
  • Page 25 POWER SUPPLY 4/5 +2.5V regulator built-in the IC supply to digital circuit inside and outside of IC. +2.5V -2.5V 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.
  • Page 26 POWER SUPPLY 5/5 Some Other DC Voltages Not In Main PCB DC +3.3V, +1.8V, +1.2V and TX5V HDMI IC791 BOARD BOARD 3.3 V ADJ---------- 1.8V IC692 IC691 3.3V IC792 IC793 3.3 V 3.3 V TX5V ADJ---------- 1.2V APPLY IN ADJ---------- 1.8V BOARD C661...
  • Page 27 POWER SUPPLY 5/5 NOTE • IC791, IC792 and IC691 are same type of regulator IC and the voltage from ‘output 2’ (pin4 of the IC) can be adjusted. We see the voltage is 1.2v at pin 4 of IC691, and others are 1.8v. •...
  • Page 28 PROTECTION CICUIT FOR MODELS: RX-D201/202/301/302 Where to measure 7 protect inputs Not use (Q212/213 R226 NI)
  • Page 29 PROTECTION CICUIT NOTE • If the power auto shuts off a few seconds after turn on, most likely it is caused by the power protection circuit. We describe the protection circuit on models RX-D201/202. It is similar to other RX-D… series models and can be used as a reference for troubleshooting.
  • Page 30 PROTECTION CICUIT- SUP. 1 For models RX-D401/402/701/702 Where to measure These 3 pins are NOT used for 7 protect inputs protection input on models RX-D401/402/701/702 THERMAL For models RX-D401/203/701/702 2.01v Include +7v, DSP D+5V, D+5V_HDMI DETECTION. Not use, because Q212,213 and R220 are NI.
  • Page 31 PROTECTION CICUIT- SUP. 2 • The protection circuit on models RX- D401/402/701/702 has 3 inputs to CPU IC501. Any of them could cause the protection circuit to be triggered and shut down the power. The marked voltages have tolerance +( 5-10)% •...
  • Page 32 PROTECTION CICUIT-SUP. 3 IC501 DIFFERENT MN101C49KNR1—for models MN101C49GNP— for models RX-D401/402/701/702 RX-D201/202/301/302...
  • Page 33 PROTECTION CICUIT- SUP. 4 S.S.S. stands for ‘Smart Surround Setup’ function This function is adopted on model RX-D702B only.
  • Page 34 PROTECTION CICUIT 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...
  • Page 35 PROTECTION CICUIT Protection 3 & 4 TH1 & TH2 DETECT inputs: The voltage drops at pin 8 of IC501 when unit gets hot...
  • Page 36 PROTECTION CICUIT PROTECTION 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.
  • Page 37 PROTECTION CICUIT – SUP. 5 REG DET input for models RX-D401/402/701/702 D +5V (DSP) HDMI 5V +7V DETECTOR DETECTOR DETECTOR 3.56v...
  • Page 38 PROTECTION CICUIT- SUP. 6 REG DET input: (for models RX-D401/402/701/702) This input detects the 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.
  • Page 39 PROTECTION CICUIT Protection 6 PROTECT input: 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. R290 D1171 Q282...
  • Page 40 PROTECTION CICUIT NOTE OVER CURRENT PROTECTION – There are 7 digital amp ICs (IC 251/351/851/261/361/451/461) for 7 channel audio amplification. Pin 5 of these ICs outputs a LOW state when the final output over current is detected. Pin 5 is connected to base of 7 transistors (Q251/351/851/261/361/451/461) respectively.
  • Page 41 PROTECTION CICUIT –SUP. 7 Protection 6 detail The OC & DT/SD functions in the digital amplifier driver IC-IRS20124S-X Over Current sensor top-bottom setup levels PWM in PWM out DC voltage to select DT mode Over Current Over Current sensor input protect output...
  • Page 42 SUP. 7note • OC stands for Over Current; DT/SD stands for Dead Time and Shut Down. • The DT (dead time) is defined as the time period from the starting point of turn-off on one side of the switching stage to the starting point of turn-on on the other side. •...
  • Page 43 PROTECTION CICUIT 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...
  • Page 44 PROTECTION CICUIT • Note: – Knowing that the power automatically shuts down within a few seconds, make sure to quickly measure the protection input voltages before the unit powers off. – See the next page for the measuring locations on the PCB.
  • Page 45 PROTECTION CICUIT 4.39V / 0.02V...
  • Page 46 Repair Tip 1 The unit’s power and amplifier circuit can work without the HDMI and OSD (RX-D701/702) PCBs. It is easier to OSD PCB HDMI PCB check on the ‘A/V removed) removed) input & system control’ section,, when troubleshooting the power and protection circuit.
  • Page 47 Repair Tip 2 Without any extension cables you can turn over the main PCB and power on the unit. ADD GROUND Every function CONNECTION should be working except the headphone, front USB and subwoofer out functions, because these 3 connectors are unplugged only.
  • Page 48 Quick check shorted components 1 Measure points in schematic diagram CN251 AMP+B AMP-B CN262 AMP+B AMP-B +Q261 -Q262 +Q1261 -Q1262 PWM IC201 +Q361 -Q362 +Q1361 -Q1362 +Q861 -Q862 +Q461 -Q462 PWM IC801 +Q1461 -Q1462 CN222 PIN14 on M volume Q1101 Q1102...
  • Page 49 •The high DC voltage on the feedback line (If Q861 or Q862 shorted) might damage the PWM ICs. (The picture shows center channel only, the other channels are similar.) •When MOSFETs are shorted, there is a high probability for the driver IC to be damaged also, and the Gate (47 Ohm) resistor to be burnt out.
  • Page 50 Quick check shorted components 2 Without any extension cable, quick measure the Q1101/1102 and 14 power output MOSFETs; also measure the +/- 7V to determine if it is shorted. Measure the resistance, if less than 100 CN222 PIN14 Ohms it’s NG. On the bottom For Example: If CN423...
  • Page 51 •When unit doesn’t power ON and fuse F103 is blown, it is necessary to find 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.
  • Page 52 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). 7 channels 820 Ohm- (CN521)analog audio signal.
  • Page 53 CHECK 7 AMP DRIVE IC’s AMP_-B+12V input AMP_-B 800 Ohms MASTER CLOCK PCB CN202 ‘AMP_-B+12V’ is the Vcc for all AMP drive ICs. PIN 2: AMP_-B PIN 3: AMP_-B+12V...
  • Page 54 •Trigger with the MASTER CLOCK signal, which is at pin 4 of FW323. •It is recommended 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.
  • Page 55 Troubleshooting With Unplugged CN111 2/2 Check analog audio and PWM on all channels FR channel CN521 CN683 Pin-Ch 1-FR 3-FL Analog audio 4-SW 0.6-1.2v p-p 5-SR (8Channels) 6-SL 8-SBR 9-SBL PWM signal 4.2-4.6v p-p Master clock On back PWM BOARD 2 PWM BOARD 1...
  • Page 56 • Trigger with MASTER CLOCK signal, if the MASTER CLOCK is missing, most likely -7v is shorted by defective PWM ICs. •Un-plug 4 connectors CN311/312/411/412 to eliminate the bad effect on the PWM signal by power amp stage. •It 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.
  • Page 57 QUICK CHECK TABLE 1/2...
  • Page 58 QUICK CHECK TABLE 2/2 SHORT OPEN...
  • Page 59 Troubleshooting With Disconnected Q1101/1102 (1/2) Without ‘AMP_+/-B’, we could check IC101 and the DC-DC Converter Control circuit easily and safely Check the IC101 circuit 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.
  • Page 60 • Before plug CN111, check IC101 with a multimeter to ensure that there is no shorting between pins (except pin 5 & 6); otherwise it may damage the ‘DCDC +12V’ and ‘-B+12v’ power supply. •Make sure the voltages ‘DCDC +12v’, -B and ‘–B_+12v’...
  • Page 61 Troubleshooting With Disconnected Q1101/1102 (2/2) CHECK DCDC CONVERTER CONTROL SECTION Master clock 400/420 KHz 5v p-p Add 47k V. Change 1 and 2 (low) V. feedback Vout_det. 200 / 210 KHZ ‘V_out’ and AC detector; ‘AMP +/- B’ shut down.
  • Page 62 •With Q1101/1102 disconnected, the DCDC CONVERTER CONTROL SECTION can function normally; and it is safe to check the circuit. •The DC level at pin 3 of IC112 controls the pulse width of the clock at pin1 and it farther controls the DC level of the ‘AMP +/- B’. •The DC level at pin3 of IC112 is effected by ‘Vout_DET’, ‘VCHANGE_1, VCHANGE_/2, and ‘FEEDBACK’.
  • Page 63 Check Drive IC IRS20124S-X 4.2V P-P AMP-B_ +12V (-10.6V) 70V P-P M CLOCK M CLOCK AMP+B (+32.1V) M CLOCK 3.84 2.84 40.9 3.02 1.02 34.7 3.03 30.9 0V (AMP-B) 0.32 10.7 10V P-P 10V P-P AMP-B M CLOCK (-30.9V) M CLOCK The voltages marked on IC251 pins are refer to ‘AMP –B’;...
  • Page 64 •Before power on, check any short between pins of drive IC pins. •Without the pair of MOSFET in circuit, the OC (over current ) at pin 5 of IC does not function. •There are 7 drive ICs- IRS20124S-X- for driving the 7 pair of MOSFETs at the audio output channels.
  • Page 65 DIGITAL AMPLIFIER Background—What is PWM • Pulse 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).

  • Page 66: Digital Amplifier

    DIGITAL AMPLIFIER Audio Signal Master Clock Digital” is the most advanced technology that creates the best •“ result. • It is certain 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”...
  • Page 67 DIGITAL AMPLIFIER Problems of a digital Amplifier...
  • Page 68 DIGITAL AMPLIFIER solving the problem 1...
  • Page 69 DIGITAL AMPLIFIER solving the problem 2 Hybrid Feedback Digital Amplifier Ver. III also features low voltage power supply, which ensures stable signal transfer. DC-DC CONVERTER CONTROL...
  • Page 70 DIGITAL AMPLIFIER solving the problem 3 Three features...
  • Page 71 DIGITAL AMPLIFIER solving the problem 3 Feature 1...
  • Page 72 DIGITAL AMPLIFIER solving 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.
  • Page 73 MASTER CLOCK TWO FREQENCIES: 400 KHz and 420 KHz IN AM RADIO MODE AM TUNNING FREQENCY (KHz) 1000 1200 1400 1600 590----610 780------------820 980-------------1020 1180----------1220 1380----------1420 1580------1620 0v --------------------------------------------------------------------------------------------------------------------------------------------------- SELECTED MASTER CLOCK FREQENCY (KHz)
  • Page 74 DIGITAL AMPLIFIER solving the problem 3 Feature 3...
  • Page 75 DIGITAL AMPLIFIER Block Diagram for RX-D… Series...
  • Page 76 DIGITAL AMPLIFIER Double D/A Feedback Diagram PWM PCB This diagram is for front left channel, other channels are similar.
  • Page 77 DIGITAL AMPLIFIER Power Amplifier Diagram This diagram is for front left channel, the other channels are similar. From PWM Board AMP-B+12V (-13/-23/-30V) AMP+B (+25/+35/+42V) LC LPF AMP-B (-25/-35/-42V) P to P (50/70/84V)
  • Page 78 MASTER CLOCK INPUT AUDIO INPUT AUDIO SIGNAL (RED SINE WAVE) MASTER CLOCK The PWM duty is 50% when input audio level is zero.
  • Page 79 MASTER CLOCK OUTPUT AUDIO MASTER CLOCK’S AMPLITUDE AND OUTPUT AUDIO AMPLITUDE DUTY CYCLE (BEFORE LPF) AFTER LPF P-P 48V P-P 80.6V The higher amplitude of the same duty cycle PWM, the output audio’s amplitude is higher, if the pulse width ratio are same.

  • Page 80: Audio Digital Process

    AUDIO DIGITAL PROCESS...
  • Page 81 AUDIO DIGITAL PROCESS The process of playing digital music involves analog/digital conversion and digital/analog conversion as shown below: 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.
  • Page 82 AUDIO DIGITAL PROCESS PROBLEM 1: An analog signal of a very faint strength cannot be accurately recreated by A/D and D/A conversion. Good Distortion...
  • Page 83 AUDIO DIGITAL PROCESS PROBLEM 2: A high-frequency analog signal cannot be accurately recreated by A/D and D/A conversion. Good Distortion...
  • Page 84 AUDIO DIGITAL PROCESS CC Converter (1)- Bit Expansion Increasing quantization resolution for low level signals...
  • Page 85 AUDIO DIGITAL PROCESS CC Converter (2)- Range Expansion...
  • Page 86 AUDIO DIGITAL PROCESS JVC 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.
  • Page 87 Audio Input-output Path & USB...
  • Page 88 Audio Input-Process Path RX-D401/402/701/702 IC681 IC661 IC610 IC671 IC620 IC686 IC630 IC685...
  • Page 89 AUDIO DIGITAL PROCESS DSP BLOCK DIAGRAM 7.1 channels To Master Volume Two Channel From A/V In 20-23 13-16 43-49 Analog signal cc conv. IC681 FR/FL Digital signal USB wireless FRONT_OPT HDMI AUDIO DATA...
  • Page 90 Master Volume Section Block Diagram Bypass DSP Analog RX-D… series From DSP Audio Go to PWM modulator section...

  • Page 91: Video Digital Process & Hdmi

    VIDEO PROCESS & HDMI What is HDMI ? • HDMI (High-Definition Multimedia Interface) is the first and only industry-supported, uncompressed, all-digital audio/video interface. HDMI provides an interface between any audio/video source, such as a set-top box, DVD player, or A/V receiver and an audio and/or video monitor, such as a digital television (DTV), over a single cable.
  • Page 92 VIDEO PROCESS & HDMI Video Connection for RX-D401/D402 HDMI AUDIO HDMI VIDEO IC781 IC771...
  • Page 93 VIDEO PROCESS & HDMI Video Connection for RX-D701/D702 HDMI AUDIO HDMI VIDEO IC771 IC781...
  • Page 94 VIDEO PROCESS & HDMI HDMI BLOCK DIAGRAM HDMI video Analog video HDMI audio All analog formats video Analog video 480p after A/D Other converted to 480p by IC781 VCR/DBS YCbCr 4:2:2 DVD/DVR HDMI...
  • Page 95 Fully HDMI Compliant. Source Device A/V Receiver Monitor Device All A/V devices should be fully HDMI compliant to avoid troubles.
  • Page 96 EDID (capabilities EDID of downstream TV) HDMI Tx HDMI Tx The JVC Receiver accepts the encoded video: If the upstream content is Transmits encoded video: YCbCr (4:2:2) only; if source outputs RGB or protected, HDCP YCbCr (4:2:2) to the TV.
  • Page 97 VIDEO PROCESS & HDMI 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:...
  • Page 98 VIDEO PROCESS & HDMI 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.

  • Page 99: Usb Wire Or Wireless

    USB WIRE OR WIRELESS All of RX-D series equipped wire USB feature...
  • Page 100 USB WIRE OR WIRELESS Wireless USB equipped on RX-D301/302/7101/702 (1) The 2Mbpshigh transmission rate using the 2.4GHzband 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.
  • Page 101 USB WIRE OR WIRELESS USB transmitter User ID Learning Function To ensure security, the wireless USB transmitter and 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”...
  • Page 102 USB WIRE OR WIRELESS Auto Scan The Wireless USB additionally features “Auto Scan”, which stops interruption from other signals in the same room. When the system is turned on, this function automatically detects electric waves from other devices --wireless LAN, for example --and selects a band that won't be interrupted by the other signals.
  • Page 103 USB WIRE OR WIRELESS BLOCK DIAGRAM CN683 SW, D/A C, AMP. ICS DSP-7.1 CH IC661 IC697 codec & S. receiver Board Front input Board...
  • Page 104 Thank you !!
  • Page 105 QUIZ 1. The digital amplifier’s PWM master frequency changes along with input audio frequency. True ( ); False ( ) 2. The DC B+ amp power supply for the output stage varies on three levels. High output volume sound is on higher voltage of B+ amp power. True ( );...

This manual is also suitable for:

Rx-d201Rx-d202Rx-d301