Pioneer-VSX74TXV-avr-sm维修电路原理图.pdf

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1、 PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapor

2、e 159936 PIONEER CORPORATION 2005 STANDBY/ON? AUDIO/VIDEO MULTI-CHANNEL RECEIVERVSX-74TXVi INPUT SELECTOR MASTER VOLUME PHASE CONTROL MCACC POSITION AUTO SURR/ STREAM DIRECT PHASE CONTROL DIGITAL PRECISION PROCESSING HOME THX STANDARD SURROUND ADVANCED SURROUND VSX-74TXVi PROVISIONAL AUDIO/VIDEO MUL

3、TI-CHANNEL RECEIVER VSX-74TXVi VSX-74TXVi-S VSX-72TXV VSX-72TXV-S THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). ModelTypePower RequirementRemarks VSX-74TXViKUXJ/CAAC120V VSX-74TXVi-SKUXJCAC120V VSX-72TXVKUXJ/CAAC120V VSX-72TXV-SKUXJCAC120V For details, refer to Important Check Poi

4、nts for Good Servicing. T-ZZK AUG. 2005 printed in Japan RadioFans.CN 收音机爱 好者资料库 VSX-74TXVi 2 1234 1234 C D F A B E SAFETY INFORMATION This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equ

5、ipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this p

6、roduct properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. WARNING This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to cause cancer, birth defects or other repro

7、ductive harm. Health 1.5mm CABLE HOLDER) (*;1.00mm FFC CONNECTOR) (*;1.00mm FFC) 2.0mm FLAT CABLE (*;1.5mm FLAT CABLE) (*;1.00mm FFC CONNECTOR) 1.25mm FFC CONNECTOR(L) PF*PG-* CABLE WIRE BOARD IN 1.25mm FFC 4/100 J5 D20PDY0410E 3203 D15A08-150-2651 * HEAD PHONE ASSY (AWX8639) CN3551 4 REK1087 KU (10

8、A/125V) FU1 - FU2,3 *1.5mm J10 8/150 INPUT SELECT ASSY (AWX8640) * *5 3561 KU AC CORD 1905:VDG1075 MAIN*3 ATS7402- TRANS *6 REK1067 FU4 (5A/125V) REK1108 FU5,6 (1.25A/125V) REK1112 FU7,8 (2.5A/125V) *5 G D Y U X V W Z AD AA AE NOTES: When ordering service parts, be sure to refer to “EXPLODED VIEWS a

9、nd PARTS LIST” or “PCB PARTS LIST”. The mark found on some component parts indicates the importance of the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. : The power supply is shown with the marked box. RadioFans.CN 收音机爱 好者资料库 VSX-74TXVi 30 1234

10、1234 C D F A B E 3.3 AUDIO use an i.LINK cable of less than 11 feet (3.5 m). Check that the source components conforms to the i.LINK Audio format. Make sure that all components connected between the receiver and the source are switched on. PQLS OFF or PQLS ON is displayed temporarily on your player

11、and the sound output is discontinued. The program format indicators dont disappear when SACD playback stops. The program format indicators remain lit until another format source is input. This is not a malfunction. Make sure your i.LINK source components are switched on. Check that i.LINK is assigne

12、d correctly. You may need to reset the i.LINK database memory in the receiver (use the front panel): With the receiver in standby, press ? STANDBY/ON while holding down RETURN. When you see DB CLEAR? appear in the display, press ENTER, then SETUP again to confirm. When youve reset the i.LINK databas

13、e memory, DB CLEAR SET shows in the display. If DB ERROR is displayed, step through the procedure again. You cant get i.LINK to display when using the SIGNAL SELECT button. After upgrading a component, it is not recognized and cannot be selected using the i.LINK connection. Before Making a Diagnosis

14、 The i.LINK indicator does not light up even when an i.LINK- equipped component is selected. i.LINK messages You may see the following messages displayed in the front panel display when using the i.LINK interface. MessageExplanation BUS FULL The i.LINK bus has reached its capacity and cannot transmi

15、t any more data. CANNOT LINK 1The connection between the receiver and the selected i.LINK-equipped component is unstable. If the i.LINK cables appear to be connected properly and both the receiver and i.LINK-equipped component are on, switch both units off, then on again to re-establish the connecti

16、on between them. CANNOT LINK 2The receiver cant identify the selected i.LINK-equipped component. For example, the receiver may not be able to identify an i.LINK-equipped personal computer. LINK CHECKThe receiver is checking the i.LINK network. It does this when components are added to, or removed fr

17、om the network. The sound may be interrupted if this happens during playback. LOOP CONNECTThe i.LINK network cannot function because the connected components form a loop. NO NAMEWhen an i.LINK-equipped component has no name, this message is displayed instead of the proper component name. NO SIGNALA

18、component is outputting an i.LINK signal that the receiver cannot reproduce. This receiver can only reproduce signals from i.LINK-Audio-equipped components. PQLS OFFThis is displayed on a playback component when PQLS turns off during playback. The sound may be interrupted momentarily when this happe

19、ns. PQLS ONThis is displayed on a playback component when PQLS turns on during playback. The sound may be interrupted momentarily when this happens. UNKNOWNWhen an i.LINK-equipped component name cannot be recognized, this message is displayed instead of the proper component name. RadioFans.CN 收音机爱 好

20、者资料库 VSX-74TXVi 220 1234 1234 C D F A B E Preparations for diagnosis Detach the 1394 Assy with the flexible cables (FFCs) connected, as shown in the photos below, then make a diagnosis. Procedures 1Remove the bonnet, referring to 7.1.11 Removal of Each Block. 2Remove the HDMI shield, first removing

21、the three screws. 3Remove the two screws that secure the 1394 connector to the rear panel. 4Remove the rivet that secures the 1394 Assy. 5Remove the 1394 Assy. 6Connect a cable between the 1394 connector and the chassis. 7Connect the source equipment (DVD player), using an iLink cable. 2 5 6 7 2 4 2

22、 HDMI Shield 1394 Assy 1394 Assy 3 2 DVD player iLink cable RadioFans.CN 收音机爱 好者资料库 VSX-74TXVi 221 5678 56 7 8 C D F A B E It is assumed that there is no loose connection or damage in the LCRs. There must not be an abnormality in pattern. Step 2: Power supply Step 1: Connections CN401, CN402 Are the

23、 FFCs correctly connected? Connect the FFCs correctly. No , C419 (+ side) C2 (+ side) Is the voltage 5V? NoNo 5V input 3.3V YesYes Do the FFCs work correctly? Is the voltage 3.3V? No Yes Yes CN401, CN402 Is soldering of the connectors OK? No Yes To Step 2 To Step 4 To Step 3 Replace any defective FF

24、C. C Step 3: Operation of the Master Clock Do signals (approx. 0.5 Vp-p) run in all the lines? F G AB ,AB D C428 (+ side)2.5V Is the voltage 2.5V? No E Yes X101Microcomputer clock Is oscillation of 6.14MHz output? No Yes X201Mercury clock Is oscillation of 24.576MHz output? No Yes To Step 5 Step 4:

25、Operation of the Master External I/F H I JA201Connection 1 No Yes Do signals (approx. 0.5 Vp-p) run in all the lines? No Yes JA202Connection 2 1394 Assy Troubleshooting Solder the connectors correctly. Check the INTERFACE Assy . Check the soldering of IC1. If soldering has not been done correctly, r

26、eplace IC1. Check the soldering of JA202. If soldering has not been done correctly, replace JA202. Check the soldering of JA201. If soldering has not been done correctly, replace JA201. Check the soldering of X201. If soldering has not been done correctly, replace X201. Check the soldering of IC401.

27、 If soldering has not been done correctly, replace IC401. Check the soldering of X101 or IC101. If soldering has not been done correctly, replace X101 or IC101. RadioFans.CN 收音机爱 好者资料库 VSX-74TXVi 222 1234 1234 C D F A B E Check the DIGITAL MOTHER Assy. Step 5: J J IC301 (pin 82) Step 5-1 60958 DVD p

28、layback (In a case of no DVD audio output) Is there a data ? No Yes Replace the 1394 Assy. Replace the 1394 Assy. IC301 (pin 2) Is there a data ? No Yes K IC404 (pin 4) Is there a data ? No Yes Check the DIGITAL MOTHER Assy. J J IC301 (pins 98-103) Step 5-2 CLK, DATA DVD-AUDIO playback (In a case of

29、 no DVD-AUDIO audio output) Are there clock and data? No Yes Replace the 1394 Assy. IC301 (pins 3-9) Are there clock and data ? No Yes L IC409 (pin 4) Is there a MCK ? No Yes To Steps 5-3-1, 5-3-2 M J X302 (pin 3) Step 5-3 CLK, DATA SACD playback (In a case of no SACD audio output) Is oscillation of

30、 22.5792MHz output? No Yes IC301 (pins 70-72, 75-81) Are there clock and data ? No Yes J IC301 (pins 20, 22-25, 28, 29) Are there clock and data ? No Yes Check the DIGITAL MOTHER Assy. Check the DIGITAL MOTHER Assy. N J IC401 (pins 19-23) Step 5-3-1Normal Are there clock and data ? No Yes O IC405 (p

31、ins 12-18) Step 5-3-2SACD DIRECT (Select PURE DIRECT, using the AUTO SURR/STREAM DIRECT key.) Are there clock and data ? No Yes IC301 (pins 3-9) Are there clock and data ? No Yes Check the soldering of X302. If soldering has not been done correctly, replace X302. Check the soldering of IC301. If sol

32、dering has not been done correctly, replace IC301. Check the soldering of IC404. If soldering has not been done correctly, replace IC404. Check the soldering of IC409. If soldering has not been done correctly, replace IC409. Check the soldering of IC301 and IC302. If soldering has not been done corr

33、ectly, replace IC301 and IC302. Check the soldering of IC301 and IC302. If soldering has not been done correctly, replace IC301 and IC302. Check the soldering of IC401. If soldering has not been done correctly, replace IC401. Check the soldering of IC301. If soldering has not been done correctly, re

34、place IC301. Check the soldering of IC405. If soldering has not been done correctly, replace IC405. RadioFans.CN 收音机爱 好者资料库 VSX-74TXVi 223 5678 56 7 8 C D F A B E 1394 Assy Check Points MC GO DBA ENF KLJ I H SIDE A SIDE B 1394 ASSY AF 1394 ASSY AF RadioFans.CN 收音机爱 好者资料库 VSX-74TXVi 224 1234 1234 C D

35、 F A B E 7.1.7 iPod INFORMATION iPod players supported by this unit This unit supports iPod, iPod mini, and iPod Photo players of the third or subsequent generation that have adopted the iPod Dock connector. The iPod cable is available as an optional accessory (Part No.: ADE7119). MONITOR OUT screen

36、 FL display Cause Normal communication could not be established. Measures Disconnect the iPod cable. After the iPod main menu is displayed, securely connect the iPod cable again. If the same error code appears again, reset the iPod player. Diagnose the unit by following the procedures in Operation c

37、heck of iPod functions. About error codes i P o d T o p E r r o r I 1 MONITOR OUT screen i P o d T o p E r r o r I 2 MONITOR OUT screen i P o d T o p N o T r a c k ErrorI1 FL display Cause The version of the software for iPod is old. Measures Update the version of the software for iPod. Cause No mus

38、ic is recorded in the iPod player. Measures Transfer music data to the iPod player. ErrorI2 FL display NoaTrck RadioFans.CN 收音机爱 好者资料库 VSX-74TXVi 225 5678 56 7 8 C D F A B E Operation check of iPod functions Check the power line (Pin ?) of the iPod connector. Note: The equalizer (EQ) function of an

39、iPod player cannot be switched from this unit. * This unit supports iPod, iPod mini, and iPod Photo players of the third or subsequent generation that have adopted the iPod Dock connector. Connect an iPod player to this unit, using an iPod cable. Has charging started? (If charging starts, it means t

40、he power line is OK.) No Yes Check Pins ?-? of the main microcomputer (IC ?). Operation is OK. No Yes Yes Is a signal output from the SP connector when a digital signal (through a coaxial or optical cable) is input?* Diagnose the path between the analog audio line (Pin ?) of the iPod connector and t

41、he DSP block. Diagnose the analog audio line (input-AMP block-SP output connector). NoNo Yes Diagnose the path between the audio line (Pin ?) of the iPod connector and the input function IC (IC ?). No Yes Is Pioneer displayed on the iPod player? (If it is displayed, microcomputer control is OK.) Whe

42、n audio data are played back, is a signal output from the S connector? (If a signal is output, the audio line is OK.) (The audio lines are only for analog input signals. * ) Is a signal output from the SP connector when a signal is input to the MULTI CH IN connector? RadioFans.CN 收音机爱 好者资料库 VSX-74TX

43、Vi 226 1234 1234 C D F A B E 7.1.8 XM RADIO INFORMATION Products used for receiving XM Satellite Radio service Operation check of XM RADIO function A commercially available Connect and Play Antenna can be used with this unit. To activate the XM RADIO service, it is necessary to receive a broadcast u

44、sing your Connect and Play Antenna. About XM messages SymptomCauseMeasures Check AntennaAn XM antenna is not connected.Check whether the XM antenna cable is securely connected. XM ANT ERR A short-circuit is occurring in the XM antenna or the surrounding antenna cable. Make sure that there is nothing

45、 unusual with the XM antenna or XM antenna cable. Turn the power off then back on. Updating The radio is being updated with the latest encryption code. Wait until the encryption code is updated. Channels 00 and 01 should function normally. No SignalThe XM signal is too weak at the current location.

46、LoadingThe unit is acquiring audio or program information.Wait until the unit has received the information. Off Air The channel currently selected has stopped broadcasting. Select another channel. CH - - - The user has selected a channel number that does not exist or is not subscribed to. The receiv

47、er automatically switches to Channel 001 or a last- selected channel. - - - - - - - - There is no artist name/feature (song/program title), or channel category is associated with the channel.No action needed. Connect an XM antenna supporting Connect and Plug to this unit. Perform a reception test, u

48、sing a free- of-charge channel 001, making this unit an XM RADIO input source. *1 It is possible that the audio output is not available with other input sources. Check with analog and digital inputs. It is likely that the XM antenna is in failure. Replace the antenna. This unit may be in failure. Ch

49、eck the power line (signal name: XXX). (With the XM antenna disconnected, the 5-V power is supplied from this unit.) Yes Yes Yes Operation OK No Yes If the reception sensitivity is not OK, relocate the antenna by a window facing south, if possible. Check the power and communication lines between the antenna and this unit. Check if the ID for the XM antenna is displayed in RADIO ID on the XM menu.*2 No No Play back the audio signal and check if a signal is output fro