Pioneer-VSX921K-avr-sm维修电路原理图.pdf

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1、ORDER NO. VSX-821-K RRV4167 AUDIO/VIDEO MULTI-CHANNEL RECEIVER VSX-821-K VSX-921-K VSX-521-K THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). ModelTypePower RequirementRemarks VSX-821-KCUXCNSMAC 120 V VSX-921-KUXCNCBAC 120 V VSX-521-KCUXCNSMAC 120 V For details, refer to Important Ch

2、eck Points for good servicing. RadioFans.CN 收音机爱 好者资料库 2VSX-821-K 1234 A B C D E F 1234 SAFETY INFORMATION WARNING This product may contain a chemical known to the State of California to cause cancer, or birth defects or other reproductive harm. Health it is not meant for the casual do-it- yourselfe

3、r. Qualified technicians have the necessary test equipment 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 y

4、ou are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualified service technician. 1. SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technicia

5、n. 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 and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overl

6、ays, control shaft, etc.). Plug the AC line cord of the appliance directly into a 120 V AC 60 Hz outlet and turn the AC power switch on. Any current measured must not exceed 0.5 mA. ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED

7、 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 visual inspection nor the protection afforded by them necessarily can be obtained by using rep

8、lacement 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 identified by marking with a on the schematics and on the parts list in this Service Manual. Th

9、e 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, fire, or other hazards. Product Safety is continuously under review and new instructions are i

10、ssued 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 from PIONEER. Leakage current tester Reading should not be above 0.5 mA Device under test Tes

11、t all exposed metal surfaces Also test with plug reversed (Using AC adapter plug as required) Earth ground AC Leakage Test (FOR USA MODEL ONLY) RadioFans.CN 收音机爱 好者资料库 3VSX-821-K 5678 5678 A B C D E F Important Check Points for Good Servicing In this manual, procedures that must be performed during

12、repairs are marked with the below symbol. Please be sure to confirm and follow these procedures. 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

13、. 1 Use specified parts for repair. Use genuine parts. Be sure to use important parts for safety. 2 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 inter

14、ference and foreign noise. 3 Make sure the soldering of repaired locations is properly performed. 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) 4 Make sure the screws are t

15、ightly fastened. Please be sure that all screws are fastened, and that there are no loose screws. 5 Make sure each connectors are correctly inserted. Please be sure that all connectors are inserted, and that there are no imperfect insertion. 6 Make sure the wiring cables are set to their original st

16、ate. Please replace the wiring and cables to the original state after repairs. In addition, be sure that there are no pinched wires, etc. 7 Make sure screws and soldering scraps do not remain inside the product. Please check that neither solder debris nor screws remain inside the product. 8 There sh

17、ould be no semi-broken wires, scratches, melting, etc. on the coating of the power cord. 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. 9 There should be no spark traces or similar

18、 marks on the power plug. When spark traces or similar marks are found on the power supply plug, please check the connection and advise on secure connections and suitable usage. Please exchange the power cord if necessary. a Safe environment should be secured during servicing. When you perform repai

19、rs, please pay attention to static electricity, furniture, household articles, etc. in order 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 with

20、in specification. Adjustments should be performed in accordance with the procedures/instructions 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 res

21、tore their performances. 3. Lubricants, Glues, and Replacement parts Use grease and adhesives 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

22、be set or the shipping screws should be installed before shipment. Please be sure to follow this method especially if it is specified in this manual. RadioFans.CN 收音机爱 好者资料库 4VSX-821-K 1234 A B C D E F 1234 CONTENTS SAFETY INFORMATION.2 1. SERVICE PRECAUTIONS .5 1.1 NOTES ON SOLDERING .5 1.2 SERVICE

23、 NOTICE.5 2. SPECIFICATIONS.6 3. BASIC ITEMS FOR SERVICE.9 3.1 CHECK POINTS AFTER SERVICING.9 3.2 JIGS LIST.9 3.3 PCB LOCATIONS .10 4. BLOCK DIAGRAM.14 4.1 OVERALL WIRING DIAGRAM.14 4.2 AUDIO BLOCK DIAGRAM (for VSX-821-K, VSX-521-K).16 4.3 AUDIO BLOCK DIAGRAM (for VSX-921-K).18 4.4 D-MAIN BLOCK DIAG

24、RAM (for VSX-821-K, VSX-521-K).20 4.5 D-MAIN BLOCK DIAGRAM (for VSX-921-K).22 4.6 VIDEO BLOCK DIAGRAM.24 4.7 POWER SUPPLY and MAIN UCOM BLOCK DIAGRAM.26 5. DIAGNOSIS.28 5.1 TROUBLESHOOTING .28 5.2 ADAPTER ERROR MESSAGE.44 5.3 USB / iPod ERROR MESSAGE.45 5.4 DETECTION CIRCUIT.46 6. SERVICE MODE .48 6

25、.1 SERVICE MODE.48 7. DISASSEMBLY.52 8. EACH SETTING AND ADJUSTMENT .62 8.1 ADJUSTMENT REQUIRED WHEN THE UNIT IS REPAIRED OR REPLACED .62 8.2 UPDATING OF THE FIRMWARE.63 8.3 IDLE CURRENT ADJUSTMENT .67 9. EXPLODED VIEWS AND PARTS LIST.70 9.1 PACKING SECTION.70 10. SCHEMATIC DIAGRAM .80 10.1 AUDIO AS

26、SY .80 10.2 AMP ASSY (1/2) (for VSX-921-K).82 10.3 AMP ASSY (2/2) (for VSX-921-K).84 10.4 AMP ASSY (1/2) (for VSX-821-K, VSX-521-K).86 10.5 AMP ASSY (2/2) (for VSX-821-K, VSX-521-K).88 10.6 MAIN ASSY.90 10.7 SUBWOOFER, HEADPHONE, MIC, GUIDE L, R, WIRE GUIDE A and B ASSYS.92 10.8 VIDEO ASSY .94 10.9

27、F-VIDEO, FRONT and POWER ASSYS.96 10.10 CPU, BRIDGE A and B ASSYS.98 10.11 STANDBY ASSY.100 10.12 D-MAIN ASSY (1/4) .102 10.13 D-MAIN ASSY (2/4) .104 10.14 D-MAIN ASSY (3/4) .106 10.15 D-MAIN ASSY (4/4) .108 10.16 USB ASSY (VSX-821-K, VSX-921-K only) .110 10.17 BT ASSY.112 11. PCB CONNECTION DIAGRAM .114 11.1 AUDIO ASSY .114 11.2 AMP