Pioneer-SCLX90-avr-sm1 维修电路原理图.pdf

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1、 Training AV amplifiers SC-LX90 - Practical repair guide - Pioneer Europe NV European Service Division Technical & QC section Order Nr: PEE5143 Created by Roel Donckers RadioFans.CN 收音机爱 好者资料库SC-LX90 practical repair guide 1 Contents: 1. INTRODUCTION 1.1 Product lineup p. 2 1.2 Product specification

2、s p. 3 1.2.1 Digital Video Converter p. 3 1.2.2 Return to factory settings p. 4 1.2.3 Speaker impedance setting p. 4 1.2.4 Specifications overview p. 5 1.3 Audio information p. 8 1.3.1 Audio coding formats p. 8 1.3.2 Speaker setup p. 12 2. TECHNICAL INFORMATION 2.1 Exploded view / PCB parts list p.

3、14 2.2 Jig list p. 16 2.3 Disassembly p. 18 2.3.1 Exterior section p. 18 2.3.2 HDMI assy p. 20 2.3.3 main chassis section p. 23 2.3.4 front section p. 24 2.3.5 power amplifier section p. 25 2.3.6 removal of rear panel p. 27 2.4 Service mode p. 29 2.4.1 Version screen p. 29 2.4.2 Protect screen p. 30

4、 2.4.3 Download screen p. 32 2.5 Test mode p. 34 2.6 Control panel mode p. 35 2.7 Firmware p. 36 2.7.1 Updating DSP flash by CD p. 36 2.7.2 Updating flash roms for various microcomputers p. 39 2.7.3 Updating flash rom for USB module p. 40 3. SCHEMATICAL EXPLANATIONS 3.1 Power on sequence p. 42 3.2 P

5、ower supply system p. 43 3.2.1 PCB locations p. 45 3.2.2 Primary power supply p. 46 3.2.3 Power supply for analogue circuit p. 47 3.2.4 Power supply for digital circuit p. 50 3.3 Protection indications p. 52 3.4 Microcomputer overview p. 53 4. REFERENCE INFORMATION 4.1 Rear connections p. 54 4.2 Scr

6、ews list (rear part) p. 55 4.3 Tutorial p. 56 5. BLOCK DIAGRAMS Power on sequence BD1 Analogue audio BD2 Digital audio BD3 Video BD4 RELATED DOCUMENTS v. 1.01 Service manuals User Manuals SC-09TX SC-LX90 RRV3708 ARB7386 SC-09TX RRV3711 NOTE: Despite of the fact that extreme care has been taken while

7、 compiling this textbook, Pioneer Electronic Europe N.V. can not be held responsible for any occurring mistakes and/or any loss of any kind which is the direct or indirect consequence of the information supplied in this textbook. RadioFans.CN 收音机爱 好者资料库SC-LX90 practical repair guide 2 1. INTRODUCTIO

8、N 1.1 Product lineup Regular Mid end High end Top end VSX-418 VSX-1018AH SC-LX71 SC-LX90 VSX-818V VSX-LX51 SC-LX81 2008 VSX-918V _ VSX-417 VSX-1017AV VSX-LX60 VSX-817 VSX-LX50 VSX-LX70 2007 VSX-917V _ VSX-416 VSX-1016V VSX-AX2AS VSX-516 VSX-2016AV VSX-AX4ASi 2006 VSX-916 _ VSX-415 VSX-1015 VSX-AX2AV

9、 VSX-515 VSX-AX4AVi 2005 VSX-915 _ VSX-D514 VSX-1014 VSX-AX5Ai VSA-AX10Ai VSX-D714 VSX-2014i 2004 VSX-D814 SC-LX90 practical repair guide 3 This product overview shows all Pioneer AV amplifiers of the last 5 years. Notice that 3 years long, there was no top end amplifier in the lineup. This year, af

10、ter 4 years development, the SC-LX90 is the new flagship. By the product names you can recognize basic features as there is a certain naming convention: A Advanced 9ch MCACC available i i-link input available V HDMI input (optional conversion from analalogue input to analogue output). H Conversion f

11、rom analogue input to digital output available. S Conversion from analogue input to analogue/digital output with resolution up scaling available. Model suffixes are not applicable to LX models (i.e. VSX-LX50, SC-LX71, ). 1.2 Product specifications 1.2.1 Digital Video Converter (DVC) Some AV amplifie

12、rs have the possibility to convert input signals to another type of output signal. This way, it can be possible, for example, to connect a DVD player to component, a game console to composite and only use the composite output to view either DVD or game console. This makes a large setup easier to con

13、nect. This conversion is done internally by the DVC (Digital Video Converter) and the capabilities are depending on the AV amplifier model. These are the different types of Digital Video conversion available: Pioneer amplifiers cant convert HDMI input to an analogue output: Main reason is that analo

14、gue outputs cant carry HDCP copy protection. So converting HDMI to analogue would mean removing HDCP. This is not allowed and therefore Pioneer amplifiers cant do this conversion. SC-LX90 practical repair guide 4 1.2.2 Return to factory settings When audio and video settings all need to be reset (ty

15、pically when the AV amplifier is sold to another owner, or when a customer has fiddled with the settings to the point that there is no sound anymore), you can reset all setting to factory default. This is done using the front controls: SC-LX90 / VSX-LX70 / VSX-LX60: 1. Switch the amplifier into stan

16、dby 2. While holding down “SETUP” button on the front panel, press “STANDBY/ON” 3. Press the “ENTER” button on the front panel. 4. Select “RESET” using ? / ?, then press “ENTER”. The display shows “RESET? OK” 5. Press “ENTER” to confirm. “OK” appears in the display to indicate that the amplifiers ha

17、s been reset. VSX-LX50 / VSX-LX1017AV / VSX-917V / VSX-817 / VSX-417: 1. Switch the amplifier into standby 2. While holding down “TONE” button on the front panel, press “STANDBY/ON” for about 3 seconds. 3. Press the “ENTER” button on the front panel. 4. The display shows “RESET OK?” 5. Press “SYSTEM

18、 SETUP” to confirm. “OK” appears in the display. VSX-AX4ASi / VSX-AX2AS / VSX-AX4AVi / VSX-AX2AV 1. Switch the amplifier into standby 2. While holding down “AV PARAMETER” button on the front panel, press “STANDBY/ON” for about 3 seconds. 3. Press the “ENTER” button on the front panel. 4. The display

19、 shows “RESET OK?” 5. Press “SETUP” to confirm. “OK” appears in the display. 1.2.3 Speaker impedance setting With all class AB amplifiers (VSX-xxx) youre recommended to use 8 speakers. If you want to use 6 speakers, you need to change a system setting. With all ICEpower amplifiers (SC-xxx), you can

20、use speaker impedance from 6 to 16 without changing a system setting. SC-LX90 / SC-LX81 / SC-LX71 Not applicable VSX-LX70 / VSX-LX60 1. Switch the amplifier into standby 2. While holding down “SETUP” button on the front panel, press “STANDBY/ON” 3. Select “SPEAKER” using up / down, then select “6” o

21、r “8”. VSX-LX50 / VSX-1018AH / VSX-LX1017AV / VSX-917V / VSX-817 1. Switch the amplifier into standby 2. While holding down “SPEAKERS” button on the front panel, press “STANDBY/ON” 3. The setting will have changed between “SP 6 OHM” and “SP 8 OHM”. VSX-417 1. Switch the amplifier into standby 2. Whi

22、le holding down “QUICK SETUP” button on the front panel, press “STANDBY/ON” 3. The setting will have changed between “SP 6 OHM” and “SP 8 OHM”. SC-LX90 practical repair guide 5 1.2.4 Specifications overview YearModelMCACC (5EQ)Advanced MCACC (9EQ)OSD output CVBSOSD output S-video / ComponentOSD outp

23、ut HDMImulti room (Speaker B)multi source (Zone 2)HDMI switchingHDMI audio decodingAnalogue to HDMI conversionHDMI resolution upscalingAnalogue video conversionDolby Pro Logic IIDolby Prologic IIxDTS NEO:6VSX-415-VSX-515-VSX-915-VSX-1015-VSX-AX2AV-VSX-AX4AVi-VSX-416-VSX-516-VSX-916-VSX-1016V-VSX-201

24、6AV-VSX-AX2AS-VSX-AX4ASi-VSX-417-VSX-817-VSX-917V-VSX-1017AV-VSX-LX50-VSX-LX60-VSX-LX70-VSX-418-VSX-818V-VSX-918V-VSX-1018AH-VSX-LX51-SC-LX71-SC-LX81-SC-LX90-DTS-HD M.A.DTS-ESDTS 96/24DTS ExpressDTS-HD H.R.DSD (SACD)PCM 192/24 (DVD-A)DTSFunctionality2 0 0 52 0 0 82 0 0 62 0 0 7Rev 1.00 27/05/2008 Do

25、nckers RoelDolby Digital EXDolby Digital+Dolby TrueHDAvailable in blackAvailable in silverAvailable in goldOSDHDMIMain featuresSound FormatsDolby Digital MCACC Multi-Channel Acoustic Calibration system. OSD output With some AV amplifiers, the system menu is outputted as OSD on the monitor outputs. M

26、ulti room Gives you the ability to listen to 1 source in 2 separate rooms by using a speaker B output. Multi source Gives you the ability to listen to different sources in 2 different rooms. HDMI switching The ability to switch a HDMI input to a HDMI output without processing the signal (*1) Analogu

27、e to These devices are able to convert an analogue video input signal and convert it to HDMI out. HDMI conversion Analogue video These devices are able to convert an analogue video signal and output it at all analogue Conversion. Video outputs (for example: s-vhs in - cvbs, s-vhs and component out)

28、(*1) Devices that are only capable of switching, have an hardware switch (see HDMI version) instead of a HDMI receiver/transceiver. Other AV amplifiers can simulate HDMI switching by setting it to “HDMI through”. But in this case the HDMI signal will be decoded and encoded again.SC-LX90 practical re

29、pair guide 6 YearModeliPodUSBoptical inMulti zone IR inputComponent inS-Video inHDMI incoaxial incontrol ini.linkRF in (Laserdisc)LANUSBOpticalMCACC microphoneS videoComposite + 2ch audiooptical outMulti zone IR outputHDMI outcoaxial outcontrol outCVBSS-videocomponentZone 2 CVBSZone 2 ComponentZone

30、3 CVBS12V triggerAudio PreoutsAC outlet (100W max.)VSX-415-2-VSX-515-2-VSX-915-2-33-2-VSX-1015-3-34-2-VSX-AX2AV-43422-2VSX-AX4AVi434222-2-2VSX-416-2-VSX-516-2-VSX-916-2-33-2-VSX-1016V-3-3422-VSX-2016AV-3-3422-VSX-AX2AS-43432-2VSX-AX4ASi4234422-2-2VSX-417-1-2-VSX-817-2-3-2-VSX-917V-2-3322-VSX-1017AV-

31、3-3422-VSX-LX50-3-3422-VSX-LX60-423432-1-2VSX-LX70-423442-21-2VSX-418-1-2-VSX-818V*a-2-3-21-VSX-918V*a-2-3-21-VSX-1018AH*a-33422-2-VSX-LX51*a-33432-2-SC-LX71SC-LX81SC-LX90-645364224214-*a = iPod can be connected through front USB. Only compatible with iPod 5th gen, nano 2th gen and higher.OutputsTer

32、minalsMonitoroutFrontRearRev. 1.00 27/05/2008 Donckers RoelInputs2 0 0 52 0 0 82 0 0 62 0 0 7 iPod A dedicated connector for connection an iPod is available. *a means that there is no dedicated iPod connector, but iPod can be connected by front USB connector. Multi zone Can be used to connect a sepa

33、rate IR receiver in another room. IR input LAN For DLNA purposes. 12V trigger To power on/off external devices or trigger an event (lowering projector screen, closing curtains, turn off lights, ) AC outlet Can be used to connect devices that switch on/off together with amplifier (other audio compone

34、nts, dvd player, subwoofer, ) SC-LX90 practical repair guide 7 YearModelVSX-415580 / 8 ohm-8c segment - MCACC-0,58,7-VSX-5157100 / 8 ohm-8c segment-0,59,5-VSX-9157100 / 8 ohm8c segment-0,59,7-VSX-10157120 / 8 ohm14c 5*7array-0,5215,4 Select 2VSX-AX2AV7140 / 8 ohm14c 5*7array + src-1.1-0,5216Select 2

35、VSX-AX4AVi7150 / 8 ohm14c 5*7array + src1.11.1-0,5216,1 Select 2VSX-4165100 / 8 ohm-8c segment-0,58,5-VSX-5166100 / 8 ohm-8c segment-0,58,9-VSX-9167100 / 8 ohm8c segment-0,59-VSX-1016V7120 / 8 ohm14c 5*7array-switch -0,515Select 2VSX-2016AV7120 / 8 ohm14c 5*7array1.2-0,715,3 Select 2VSX-AX2AS7140 /

36、8 ohm14c 5*7array + src-1.2-0,6516,3 Select 2VSX-AX4ASi7150 / 8 ohm14c 5*7array + src1.11.2-0,6516,4 Select 2VSX-4175100 / 8 ohm-8c segment-0,58,3-VSX-8177100 / 8 ohm8c segment-0,58,5-VSX-917V7100 / 8 ohm8c segment-switch -0,58,8-VSX-1017AV7120 / 8 ohm14c 5*7array-switch -0,515-VSX-LX507120 / 8 ohm1

37、4c 5*7array1.3-0,615,3 Select 2VSX-LX607140 / 8 ohm14c 5*7array + src1.30,617Select 2VSX-LX707150 / 8 ohm14c 5*7array + src1.30,617Select 2VSX-4185100 / 8 ohm-8c segment-0,57,9-VSX-818V7100 / 8 ohm-8c segment-switch-0,58,1-VSX-918V7100 / 8 ohm-8c segment-1.3a-0,58,1-VSX-1018AH7120 / 8 ohm14c 5*7arra

38、y + src-1.3a0,613,3 Select 2 plusVSX-LX517120 / 8 ohm14c 5*7array + src-1.3a0,613,5 Select 2 plusSC-LX7171.3aSelect 2 plusSC-LX817Ultra 2 plusSC-LX9010140 / 8ohmColor LCD screen2.01.3a0,5535,5 Ultra 2 plusHDMI Control / Kuro LinkFront Bi-ampSpecificationsDisplayInput source rename (reciever)Input so

39、urce rename (remote)HDMI DeepColorSR+HDMI VersionProgrammable remotePower/channel W - 8ohm - front2 0 0 52 0 0 82 0 0 62 0 0 7Standby power WUSB versionSpeaker outputsRev 1.00 27/05/2008 Donckers RoelTHX certificationWeight kg Bi-amp 2 outputs can be used to connect 1 front speaker if the speakers h

40、as two separate Connections for high and low audio signals. This gives you more power and more accurate sound. SC-LX90 practical repair guide 8 1.3 Audio information 1.3.1 Audio coding formats When audio is digitally recorded on a medium, there are several digital coding formats that can be used. Ov

41、erview of some audio coding formats: Audio carriers (CD, DAT, SACD, DVD-A, ) are typically 2ch audio, with exception of SACD & DVD-A, and have the complete memory available for audio data. Compressing audio is not necessary and for these mediums PCM or DSD coding is mostly used. Video carriers (LD,

42、DVD, BD) generally have multi channel audio and have to share the complete memory of the medium for video data as well. In these cases its necessary to compress audio data to be able to get all the video data on there as well. These mediums usually have Dolby, DTS coding. Since the launch of blu-ray

43、 disc and HD-DVD, much more memory is available and compression is less necessary. These mediums can carry high definition audio in the form of Dolby trueHD, DTS-HD and PCM. Portable media have gained popularity ever since internet was accessible to most people. Because internet bandwith is relative

44、ly small and the first portable media players didnt have massive storage room, new audio coding formats were designed to compress audio as much as possible. For example: MP3, WMA9, ATRAC, These audio coding formats are not explained in this guide since theyre not commonly used for home cinema system

45、s. PCM (Pulse Code Modulation) This is the most commonly used coding format for digital audio. Its used on formats as CD, DAT, DVD-A and optional format on DVD and BD. The principle of analogue to digital conversion with PCM is to take samples of the analogue audio signal at a certain frequency (sam

46、ple rate). At each sample, the amplitude of the analogue signal at that moment is converted to a digital value. CD: sampling rate = 44,1kHz quantization = 16 bit/channel stereo bit rate = 1411 kbit/s DAT: sampling rate = 48 kHz quantization = 16 bit/channel stereo bit rate = 1536 kbit/s DVD-A: sampl

47、ing rate = 192kHz quantization = 24 bit/channel stereo bit rate = 9216 kbit/s 44,1kHz sampling of a 5kHz sine wave (as with CD) 192kHz sampling of a 5kHz sine wave (as with DVD-A) HDMI Max. number of channels Sampling rate kHz Max. quantization bit Max. bit rate kbit/s CD DVD-A 1.0 1.1 1.2 1.3 SPDIF

48、 i-link (IEEE1394) CD 2 44,1 16 1411 DVD-A 5.1 2.0 96 192 24 24 9216 SC-LX90 practical repair guide 9 DSD (Direct Stream Digital) This is designed by Philips and Sony to provide a master quality coding format of analogue audio. Frequency response is theoretically much higher than DVD-A, and signal s

49、teepness is also very high. In general lines, it converts analogue audio by comparing the analogue signal at a very high sample rate (2,8224 MHz) and detects whether the differential value (delta) during each sample is rising or dropping. With each sample, there is only 1 bit information. This conve

50、rsion is also called delta sigma conversion () SACD: sampling rate = 2,8224 MHz DSD. quantization = 1 bit/channel bit rate = 5644 kbit/s -101 2,8224MHz DSD coding of 5kHz sine wave (as with SACD) HDMI Max. number of channels Sampling rate kHz Max. quantization bit Max. bit rate kbit/s SACD BD 1.0 1.