先锋VSX-91TXH维修图纸.pdf

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1、ORDER NO. 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,

2、 Singapore 159936 PIONEER CORPORATION 2007 MULTI JOG MASTER VOLUME ENTER VSX-LX50 STANDBY/ON PHONES DVD/LD PHASE CONTROL TV/SATDVR/VCR 1DVR/VCR 2VIDEO/GAME DIGITAL PRECISION PROCESSING CDCD-R/TAPE/MDFM/AM LISTENING MODE PTY SEARCH EON MODE SYSTEM SETUP TUNING/ STATION TUNER EDITSPEAKERS RETURNTONE M

3、ULTI JOG MULTI CH IN SB ch PROCESSING SIGNAL SELECT HIMDUBSiPod MCACC SETUP MICDIGITAL INAUDIORLVIDEO VIDEO/GAME INPUTS-VIDEOUSB VSX-LX50 RRV3598 AUDIO/VIDEO MULTI-CHANNEL RECEIVER VSX-LX50 VSX-91TXH VSX-9120TXH-K THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). ModelTypePower Requir

4、ementRemarks VSX-LX50HYXJ5AC 220 V to 230V VSX-91TXHKUXJ/CAAC 120 V VSX-9120TXH-KKUXJAC 120 V For details, refer to Important Check Points for good servicing. T-FZV MAY 2007 printed in Japan ? ? ? ? ? ? ? ? ? ? ? VSX-LX50 2 1234 1234 C D F A B E SAFETY INFORMATION 1. SAFETY PRECAUTIONS The following

5、 check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Measure leakage current to a known earth ground (water pipe, conduit, etc.) by connecting a leakage current tester such as Simpson Model 229-2 or equivalent between the earth ground

6、and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120V AC 60 Hz outlet and turn the AC power switch on. Any current measured must not exceed 0.5 mA. ANY MEASUREMENTS NOT WITHI

7、N THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. 2. PRODUCT SAFETY NOTICE Many electrical and mechanical parts in the appliance have special safety related characteristics. These are often not evident from vi

8、sual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this Service Manual. Electrical components having such features are ide

9、ntified by marking with a on the schematics and on the parts list in this Service Manual. The use of a substitute replacement component which does not have the same safety characteristics as the PIONEER recommended replacement one, shown in the parts list in this Service Manual, may create shock, fi

10、re, or other hazards. Product Safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current PIONEER Service Manual. A subscription to, or additional copies of, PIONEER Service Manual may be obtained at a nominal charge f

11、rom PIONEER. Leakage current tester Reading should not be above 0.5 mA Device under test Test all exposed metal surfaces Also test with plug reversed (Using AC adapter plug as required) Earth ground AC Leakage Test (FOR USA MODEL ONLY) WARNING This product contains lead in solder and certain electri

12、cal parts contain chemicals which are known to the state of California to cause cancer, birth defects or other reproductive harm. Health it is not meant for the casual do-it- yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely r

13、epair 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 product properly and safely, you should not risk trying to do so

14、and refer the repair to a qualified service technician. ? ? ? ? ? ? ? ? ? ? ? VSX-LX50 3 5678 56 7 8 C D F A B E Important Check Points for Good Servicing In this manual, procedures that must be performed during repairs are marked with the below symbol. Please be sure to confirm and follow these pro

15、cedures. 1. Product safety Please conform to product regulations (such as safety and radiation regulations), and maintain a safe servicing environment by following the safety instructions described in this manual. ? Use specified parts for repair. Use genuine parts. Be sure to use important parts fo

16、r safety. ? Do not perform modifications without proper instructions. Please follow the specified safety methods when modification(addition/change of parts) is required due to interferences such as radio/TV interference and foreign noise. ? Make sure the soldering of repaired locations is properly p

17、erformed. When you solder while repairing, please be sure that there are no cold solder and other debris. Soldering should be finished with the proper quantity. (Refer to the example) ? Make sure the screws are tightly fastened. Please be sure that all screws are fastened, and that there are no loos

18、e screws. ? Make sure each connectors are correctly inserted. Please be sure that all connectors are inserted, and that there are no imperfect insertion. ? Make sure the wiring cables are set to their original state. Please replace the wiring and cables to the original state after repairs. In additi

19、on, be sure that there are no pinched wires, etc. ? Make sure screws and soldering scraps do not remain inside the product. Please check that neither solder debris nor screws remain inside the product. ? There should be no semi-broken wires, scratches, melting, etc. on the coating of the power cord.

20、 Damaged power cords may lead to fire accidents, so please be sure that there are no damages. If you find a damaged power cord, please exchange it with a suitable one. ? There should be no spark traces or similar marks on the power plug. When spark traces or similar marks are found on the power supp

21、ly plug, please check the connection and advise on secure connections and suitable usage. Please exchange the power cord if necessary. ? Safe environment should be secured during servicing. When you perform repairs, please pay attention to static electricity, furniture, household articles, etc. in o

22、rder to prevent injuries. Please pay attention to your surroundings and repair safely. 2. Adjustments To keep the original performance of the products, optimum adjustments and confirmation of characteristics within specification. Adjustments should be performed in accordance with the procedures/inst

23、ructions described in this manual. 4. Cleaning For parts that require cleaning, such as optical pickups, tape deck heads, lenses and mirrors used in projection monitors, proper cleaning should be performed to restore their performances. 3. Lubricants, Glues, and Replacement parts Use grease and adhe

24、sives that are equal to the specified substance. Make sure the proper amount is applied. 5. Shipping mode and Shipping screws To protect products from damages or failures during transit, the shipping mode should be set or the shipping screws should be installed before shipment. Please be sure to fol

25、low this method especially if it is specified in this manual. ? ? ? ? ? ? ? ? ? ? ? VSX-LX50 4 1234 1234 C D F A B E CONTENTS SAFETY INFORMATION. 2 1. SERVICE PRECAUTIONS. 6 1.1 NOTES ON SOLDERING. 6 2. SPECIFICATIONS. 7 2.1 ACCESSORIES. 7 2.2 SPECIFICATIONS . 8 2.3 PANEL FACILITIES. 10 3. BASIC ITE

26、MS FOR SERVICE. 20 3.1 CHECK POINTS AFTER SERVICING. 20 3.2 PCB LOCATIONS. 21 3.3 JIGS LIST . 23 4. BLOCK DIAGRAM. 24 4.1 OVERALL WIRING DIAGRAM . 24 4.2 BLOCK DIAGRAM for AUDIO BLOCK . 26 4.3 BLOCK DIAGRAM for VIDEO BLOCK. 28 5. DIAGNOSIS. 30 5.1 DIAGNOSIS FLOWCHART . 30 5.2 CIRCUIT DESCRIPTION. 70

27、 6. SERVICE MODE. 72 6.1 TEST MODE. 72 7. DISASSEMBLY . 75 8. EACH SETTING AND ADJUSTMENT . 82 8.1 ADJUSTMENT. 82 8.2 HOW TO UPDATE FIRMWARE. 82 9. EXPLODED VIEWS AND PARTS LIST. 88 9.1 PACKING. 88 9.2 EXTERIOR SECTION. 90 9.3 CHASSIS SECTION . 92 9.4 REAR SECTION. 94 9.5 POWER AMP SECTION. 98 9.6 F

28、RONT PANEL SECTION. 100 10. SCHEMATIC DIAGRAM. 102 10.1 AUDIO IN ASSY (1/2). 102 10.2 AUDIO IN (2/2) and 12V-REG ASSYS. 104 10.3 MAIN CONTROL ASSY (1/3). 106 10.4 MAIN CONTROL (2/3), GUARD-C and GUARD-F ASSYS. 108 10.5 MAIN CONTROL ASSY (3/3).110 10.6 DSP ASSY (1/4).112 10.7 DSP ASSY (2/4).114 10.8

29、DSP ASSY (3/4).116 10.9 DSP ASSY (4/4).118 10.10 COMPOSITE ASSY. 120 10.11 S-VIDEO and BRIDGE 2 ASSYS. 122 10.12 COMPONENT ASSY. 124 10.13 DISPLAY, VOLUME and MULTI JOG ASSYS. 126 10.14 HEADPHONE, FRONT-IN, PRIMARY and TRANS 1 ASSYS. 128 10.15 TRANS 2-1, DIODE 1, VH TR, BRIDGE 1 and PS/SP ASSYS. 130 10.16 TRANS 2-2, TRANS SIDE, LOCAL P-SUPPLY, DC/DC, IR I/O and VIDEO CONNECT ASSYS . 132 10.17 POWER AMP-L, POSI 1-L and POSI 2-L ASSYS. 134 10.18 POWER AMP-R and POSI 1-R ASS