Pioneer-VSX418K-avr-sm维修电路原理图.pdf

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, Singapore 159936 PIONEER CORPORATION2008 2008 Printed in Japan MASTER VOLUME VSX-418 STANDBY/ON PHONES DVDTVDVD 5.1DVRCDCD-RFMAM MIDNIGHT/ LOUDNESSVSB MODE SIGNAL SELECT SOUND RETRIEVER PORTABLE PORTABLE SLEEP PHASE CONTROL INPUT SELECTOR ADVANCED SURROUND STEREO / A.L.C.STANDARD AUDIO/VIDEO MULTI-CHANNEL RECEIVER DIALOGUE ENHANCEMENT PHASE CONTROL AUTO SURR / STREAM DIRECT VSX-418-K RRV3737 AUDIO/VIDEO MULTI-CHANNEL RECEIVER VSX-418-K VSX-418-S THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). ModelTypePower RequirementRemarks VSX-418-KMYSXJ5AC 220 V to 230 V VSX-418-SMYSXJ5AC 220 V to 230 V For details, refer to Important Check Points for good servicing. T-ZZK MAR. RadioFans.CN 收音机爱 好者资料库 2VSX-418-K 1234 A B C D E F 1234 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 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 you 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. 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 reproductive harm. Health & Safety Code Section 25249.6 Proposition 65 NOTICE (FOR CANADIAN MODEL ONLY) Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts must be of identical designation. REMARQUE (POUR MODLE CANADIEN SEULEMENT) Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les pices de remplacement doivent avoir la mme dsignation. ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURN- ING 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 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 identified 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, fire, 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 from PIONEER. (FOR USA MODEL ONLY) 1. SAFETY PRECAUTIONS The following 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 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. Device under test Leakage current tester Earth ground Reading should not be above 0.5 mA Also test with plug reversed (Using AC adapter plug as required) Test all exposed metal surfaces AC Leakage Test RadioFans.CN 收音机爱 好者资料库 3VSX-418-K 5678 5678 A B C D E F RadioFans.CN 收音机爱 好者资料库 4VSX-418-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 AMPLIFIER FAILURE DIAGNOSIS FLOW CHART.5 2. SPECIFICATIONS.6 2.1 SPECIFICATIONS.6 2.2 PANEL FACILITIES.7 3. BASIC ITEMS FOR SERVICE.12 3.1 CHECK POINTS AFTER SERVICING.12 3.2 PCB LOCATIONS .13 4. BLOCK BIAGRAM.14 4.1 OVERALL WIRING CONNECTION DIAGRAM .14 4.2 BLOCK DIAGRAM.16 4.3 DSP BLOCK DIAGRAM.18 5. DIAGNOSIS.19 5.1 DIAGNOSIS FLOWCHART.19 5.2 DETECTION CIRCUIT.23 5.3 AMPLIFIER SYSTEM PROTECTION OPERATION SPECIFICATION.25 6. SERVICE MODE.26 7. DISASSEMBLY.27 8. EACH SETTING AND ADJUSTMENT .29 9. EXPLODED VIEWS AND PARTS LIST.30 9.1 PACKING SECTION .30 9.2 EXTERIOR SECTION.32 9.3 REAR PANEL SECTION.34 9.4 FRONT PANEL SECTION .36 10. SCHEMATIC DIAGRAM.38 10.1 MAIN ASSY (1/3).38 10.2 MAIN ASSY (2/3).40 10.3 MAIN ASSY (3/3).42 10.4 DSP ASSY (1/2).44 10.5 DSP ASSY (2/2).46 10.6 POWER PACK (1/2) and TRANS2 ASSY.48 10.7 POWER PACK ASSY (2/2) .50 10.8 5.1CH INPUT and TRANS3 ASSYS.52 10.9 FRONT DISPLAY, ROTARY ENCODER, POWER KEY and JOG ASSYS.54 10.10 FRONT MINI JACK, DIGITAL INPUT, REGULATOR and HEAD PHONE ASSYS.56 10.11 VIDEO and PRIMARY ASSYS.58 11. PCB CONNECTION DIAGRAM .60 11.1 DSP ASSY.61 11.2 MAIN ASSY .62 11.3 POWER PACK ASSY.66 11.4 TRANS2 and TRANS3 ASSYS.70 11.5 5.1CH INPUT and HEAD PHONE ASSYS .72 11.6 FRONT MINI JACK ASSY.73 11.7 FRONT DISPLAY, ROTARY ENCODER, POWER KEY and JOG ASSYS.74 11.8 DIGITAL INPUT ASSY.78 11.9 REGULATOR ASSY.79 11.10 PRIMARY ASSY .80 11.11 VIDEO ASSY .82 12. ELECTRICAL PARTS LIST .83 RadioFans.CN 收音机爱 好者资料库 5VSX-418-K 5678 5678 A B C D E F 1. SERVICE PRECAUTIONS 1.1 NOTES ON SOLDERING 1.2 AMPLIFIER FAILURE DIAGNOSIS FLOW CHART For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit. Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs accompanied by reworking of soldering. Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 C. Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 C in general, although the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of the soldering iron. Do NOT use a soldering iron whose tip temperature cannot be controlled. Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting temperatures (hard to melt/easy to harden). The following lead-free solders are available as service parts: Parts numbers of lead-free solder: GYP1006 1.0 in dia. GYP1007 0.6 in dia. GYP1008 0.3 in dia. Amplifier failure diagnosis flow chart When DC detection is activated (AMP_ERR flashes on the display), failure (damage) of the power amplifier section is considered. Caution: When releasing the lock state of power key before repair, please be careful because there is the possibility that more damages will occur when turning on the power once again! According to a symptom, perform the following confirmation beforehand. 1) Are there any Fuses and IC protectors open? 2) After turn on the power, confirm that the supply voltage of the point that can be measured is appropriate. (Particularly the supply voltage of the power Tr and drive step) 3) Whether the voltage of pin2 and pin5 of IC601 or IC603 is equal to (VL-0.7V). If not (eg, equal to VH), then change the corresponding power pack IC601 or IC603.