Yamaha-A-12-M-Service-Manual电路原理图.pdf

《Yamaha-A-12-M-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Yamaha-A-12-M-Service-Manual电路原理图.pdf（23页珍藏版）》请在收音机爱好者资料库上搜索。

1、1 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W SERVICE MANUAL PA 011750 Copyright (c) Yamaha Corporation. All rights reserved. PDF-K103 04.11 HAMAMATSU, JAPAN CONTENTS SPECIFICATIONS & DIMENSIONS . 3 NEUTRIK NL4FC PLUG WIRING. 3 CROSSOVER . 4 DISASSEMBLY PROCEDURE . 9 A10/A12/A15 . 9 A12M . 12 A15

2、W . 15 PARTS LIST A10A12 A15 A12M A15W RadioFans.CN 收音机爱 好者资料库 2 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W IMPORTANT NOTICE This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic service procedures inherent to the ind

3、ustry, and more specifically Yamaha Products, are already known and under- stood by the users, and have therefore not been restated. WARNING :Failure to follow appropriate service and safety procedures when servicing this product may result in per- sonal injury, destruction of expensive components a

4、nd failure of the product to perform as specified. For these reasons, we advise all Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or the appointed service representative. IMPORTANT :This presentation or sale of this manual to any individual or f

5、irm does not constitute authorization certifi- cation, recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form. The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and servic

6、e departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division.

7、 WARNING :Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus.) IMPORTANT :Turn the unit OFF during disassembly and parts replacement. Rech

8、eck all work before you apply power to the unit. WARNING: CHEMICAL CONTENT NOTICE! The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (Where applicable) components may also contain traces of chemicals found by the California Healt

9、h and Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER! Avoid prolonged, unprotected contact between solder and your skin! When sold

10、ering, do not inhale solder fumes or expose eyes to solder/flux vapor! If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. Protective Circuit (poly switch) All full-range loudspeakers are fitted with a self-resetting po

11、ly switch that protects the high-frequency driver from damage caused by excessive power. If a loudspeaker cabinet loses high-frequency output, immediately remove power from the unit and wait for two to three minutes. This should be long enough to allow the poly switch to reset. Reapply power and che

12、ck the performance of the high- frequency driver before continuing, with the power reduced to a level that does not cause the poly switch to interrupt the signal. (On the subwoofers, the poly switch protects the woofer and a similar routine should be followed if the output is lost.) RadioFans.CN 收音机

13、爱 好者资料库 3 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W SPECIFICATIONS & DIMENSIONS *: EIA RS-426 ModelA10A12A15A12MA15W Type2 way Bass reflex Bass reflex Speaker Unit LF10 cone12 cone15 cone12 cone15 cone HF1 VC, Horn-TW- Frequency Response65 Hz-20 kHz60 Hz-20 kHz65 Hz-20 kHz 50 Hz-200 Hz with the

14、 internal low pass filtering Power Capacity NOISE*125 W150 W200 W150 W250 W PGM250 W300 W400 W300 W500 W MAX500 W600 W800 W600 W1000 W Nominal Impedance8 Sensitivity96 dB SPL (1 W, 1 m) 97 dB SPL (1 W, 1 m) 98 dB SPL (1 W, 1 m) 97 dB SPL (1 W, 1 m) 97 dB SPL (1 W, 1 m) Input Connectors1/4 phone jack

15、 x 1, Neutrik SPEAKON NL4MP x 1 1/4 phone jack x 2, Neutrik SPEAKON NL4MP x 2 Socket Mount Diameter35 mm (1 - 3/8) Dimensions (WxHxD) 385 mm x 542 mm x 307 mm 405 mm x 582 mm x 323 mm 470 mmx 672 mm x 375 mm 582 mm x 405 mm x 323 mm 485 mm x 622 mm x 485 mm Weight13.0 kg15.5 kg21.5 kg15.5 kg28.0 kg

16、H W D 77.5 102.5 H W D 120 30 H W D A10/A12/A15A12MA15W Unit: mm If you will be using the Neutrik connectors for speaker input, wire the plugs as shown to the right. Be sure to use proper speaker cable NOT shielded instrument or line cable for all speaker connections. 2 (NO USE) 2+ (NO USE) 1+ : HOT

17、(+) 1 :COLD () Neutrik NL4FC connector NEUTRIK NL4FC PLUG WIRING 4 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W CROSSOVER A10 5 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W A12 6 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W A12M 7 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W A15 Reversing 8

18、SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W A15W 9 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W Photo.1 5: +Bind Head Tapping Screw D4.0/L16 Black (AAX59650) Photo.3 Photo.2 42: +Bind Head Wood Screw D5.0/L30 (AAX59870) (A10) 5A 5AMetal handle26 26 Tripod Support Mount 26: +Flat Head Tapping Sc

19、rew D5.0/l25 Black (AAX59770) 42 Rubber foot DISASSEMBLY PROCEDURE A10/A12/A15 1.Metal Handle (Time required: About 2 minute) 1-1Remove the ten (10) screws marked 5A. The metal handle then removed. (Photo. 1) 2.Tripod Support Mount (Time required: About 1 minutes) 2-1Remove the four (4) screws marke

20、d 26. The tripod support mount can then be removed. (Photo.2) 3.Rubber Foot (Time required: About 1 minutes) 3-1Remove the screw marked 42. The rubber foot can then be removed. (Photo.3) 10 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W A10: 5B A12 /A15: 6 A10: 5B A12 /A15: 6 Speaker(Woofer) Speaker

21、(Tweeter) 12A 12A 23 23 23 Metal grille 23 Photo.4 Photo.5 (A10) 4.Speaker(Woofer) (Time required: About 3 minutes) 4-1Remove the eight (8) screws marked 23. The metal grille can then be removed. (Photo.4) 23: +Cup Screw D4.0/L16 Black (WA764400) A10 5: +Bind Head Tapping Screw D4.0/L16 Black (AAX59

22、650) 12: +Bind Head Tapping Screw D4.0/L25 Black (AAX59670) A12/A15 6: +Bind Head Tapping ScrewD5.0/L20 Black (VB857600) 12: +Bind Head Tapping Screw D4.0/L25 Black (AAX59670) Speaker(Tweeter) Photo.6Photo.7 4-2A10: Remove the eight (8) screws marked 5B. The speaker(woofer) can then be removed. (Pho

23、to.5) A12/ A15: Remove the eight (8) screws marked 6. The speaker(woofer) can then be removed. (Photo.5) (A10) 5.Speaker(Tweeter) (Time required: About 3 minutes) 5-1Remove the metal grille. (See procedure 4-1)5-2Remove the the six (6) screws marked 12A. The speaker(tweeter) can then be removed. (Ph

24、oto.5, 6, 7) 11 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W Terminal Plate Neutrik NL4MP (With Hexagonal nut) 12B 39 12B Phone Jack Photo.9 38: Nut (ES200030) Photo.8 Photo.10 6.Terminal Plate, Network (Time required: About 2 minutes) 6-1Remove the four (4) screws marked 12B. The network and term

25、inal plate can then be removed. (Photo.8) 6-2Network 6-2-1Remove the four (4) screws marked 33. The network can then be removed. (Photo.9) 12: +Bind Head Tapping Screw D4.0/L25 Black (AAX59670) 39: +Flat Head Machine Screw M3.0/L12 Black (V5993400) 33 NetworkTerminal Plate 38 Phone Jack 6-3Remove th

26、e two (2) screws marked 39 and the two (2) hexagonal nuts marked 38. The neutrik NL4MP can then be removed. (Photo.8, 10) 6-4Remove the hexagonal nut. The phone jack can then be removed. (Photo.8, 10) 33: +Bind Head Tapping Screw D3.0/L20 Black (VI064700) (A10) 12 SPEAKER SYSTEM/SUBWOOFER A10/A12/A1

27、2M/A15/A15W 1.Metal Handle (Time required: About 2 minute) 1-1Remove the ten (10) screws marked 5. The metal handle then removed. (Photo. 1) 2.Tripod Support Mount (Time required: About 1 minutes) 2-1Remove the four (4) screws marked 26. The tripod support mount can then be removed. (Photo.2) Photo.

28、1 5: +Bind Head Tapping Screw D4.0/L16 Black (AAX59650) Photo.3 Photo.2 42: +Bind Head Wood Screw D5.0/L30 (AAX59870) 26: +Flat Head Tapping Screw D5.0/L25 Black (AAX59770) 5 5 Metal handle26 26 Tripod Support Mount 42 Rubber foot 3.Rubber Foot (Time required: About 1 minutes) 3-1Remove the screw ma

29、rked 42. The rubber foot can then be removed. (Photo.3) A12M 13 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W 6Speaker(Woofer) Speaker(Tweeter) 6 12A Photo.4 Photo.5 4.Speaker(Woofer) (Time required: About 3 minutes) 4-1Remove the eight (8) screws marked 23. The metal grille can then be removed. (P

30、hoto.4) 6: +Bind Head Tapping Screw D5.0/L20 Black (VB857600) 12: +Bind Head Tapping Screw D4.0/L25 Black (AAX59670) Speaker(Tweeter) Photo.6Photo.7 5.Speaker(Tweeter) (Time required: About 3 minutes) 5-1Remove the metal grille. (See procedure 4-1) 23: +Cup Screw D4.0/L16 Black (WA764400) 23 23 23 2

31、3 Metal grille 4-2Remove the eight (8) screws marked 6. The speaker(woofer) can then be removed. (Photo.5) 5-2Remove the the six (6) screws marked 12A. The speaker(tweeter) can then be removed. (Photo.5, 6, 7) 14 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W Photo.9 38: Nut (ES200030) Photo.8 Photo

32、.10 6.Terminal Plate, Network (Time required: About 2 minutes) 6-1Remove the four (4) screws marked 12B. The network and terminal plate can then be removed. (Photo.8) 6-2Network 6-2-1Remove the four (4) screws marked 33. The network can then be removed. (Photo.9) 12: +Bind Head Tapping Screw D4.0/L2

33、5 Black (AAX59670) 39: +Flat Head Machine Screw M3.0/L12 Black (V5993400) Terminal Plate Neutrik NL4MP (With Hexagonal nut)12B 39 12B Phone Jack 38 Phone Jack 33 Network Terminal Plate 6-3Remove the two (2) screws marked 39 and the two (2) hexagonal nuts marked 38. The neutrik NL4MP can then be remo

34、ved. (Photo.8, 10) 6-4Remove the hexagonal nut. The phone jack can then be removed. (Photo.8, 10) 33: +Bind Head Tapping Screw D3.0/L20 Black (VI064700) 15 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A15W A15W 1.Metal Handle (Time required: About 2 minute) 1-1Remove the ten (10) screws marked 5. The m

35、etal handle then removed. (Photo. 1) 2.Tripod Support Mount (Time required: About 1 minutes) 2-1Remove the four (4) screws marked 27. The tripod support mount can then be removed. (Photo.2) Photo.1 5: +Bind Head Tapping Screw D4.0/L16 Black (AAX59650) Photo.3 Photo.2 42: +Bind Head Wood Screw D5.0/L

36、30 (AAX59870) 5 5 5 Metal handle 2727 Tripod Support Mount 42 Rubber foot 27: +Flat Head Machine Screw M5.0/L40 Black (AAX59780) 3.Rubber Foot (Time required: About 1 minutes) 3-1Remove the screw marked 42. The rubber foot can then be removed. (Photo.3) 16 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12M/A15/A

37、15W Photo.4 4.Speaker(Woofer) (Time required: About 3 minutes) 4-1Remove the eight (8) screws marked 23. The metal grille can then be removed. (Photo.4) 23: +Cup Screw D4.0/L16 Black (WA764400) 23 23 23 Metal grille 23 77 7 Speaker(Woofer) 7: +Bind Head Tapping Screw D5.0/L25 Black (VI014200) 5.Term

38、inal Plate, Network (Time required: About 2 minutes) 5-1Remove the four (4) screws marked 12B. The network and terminal plate can then be removed. (Photo.6) 5-2Network 5-2-1Remove the four (4) screws marked 33. The network can then be removed. (Photo.7) Photo.5 4-2Remove the eight (8) screws marked

39、7. The speaker(woofer) can then be removed. (Photo.5) 5-3Remove the two (2) screws marked 39 and the two (2) hexagonal nuts marked 38. The neutrik NL4MP can then be removed. (Photo.6, 8) 5-4Remove the hexagonal nut. The phone jack can then be removed. (Photo.6, 8) Photo.7 Photo.6 Terminal Plate Neut

40、rik NL4MP Neutrik NL4MP (With Hexagonal nut) 12B 39 39 12B Phone Jack 33 Network Terminal Plate 12: +Bind Head Tapping Screw D4.0/L25 Black (AAX59670) 39: +Flat Head Machine Screw M3.0/L12 Black (V5993400) 33: +Bind Head Tapping Screw D3.0/L20 Black (VI064700) 17 SPEAKER SYSTEM/SUBWOOFER A10/A12/A12

41、M/A15/A15W 18: Nut (ES200030) Photo.8 38 38Phone Jack PARTS LIST Notes : DESTINATION ABBREVIATIONS The numbers “QTY” show quantities for each unit. The parts with “-” in “PART NO.” are not available as spare parts. This mark “ ” in the REMARKS column means these parts are interchangeable. The second

42、 letter of the shaded () part number is O, not zero. The second letter of the shaded () part number is I, not one. M:South African model O:Chinese model Q:South-east Asia model T :Taiwan model U :U.S.A. model V :General export model (110V) W:General export model (220V) N,X: General export model Y :E

43、xport model A :Australian model B :British model C :Canadian model D :German model E :European model F :French model H :North European model I :Indonesian model J :Japanese model K :Korean model CONTENTS OVERALL ASSEMBLY A10 . 2 A12 . 3 A12M . 4 A15. 5 A15W . 6 SPEAKER SYSTEM/SUBWOOFER 2 A10/A12/A12

44、M/A15/A15W OVERALL ASSEMBLY: A10 : New Parts REF NO.PART NO.DESCRIPTIONREMARKSQTYRANK RANK: Japan only OVERALL ASSEMBLYA10 1Speaker8ohms 125W10 WOOFER 5+Bind Head Tapping ScrewD4.0/L16 Blackfor 10 WOOFER and HANDLE18 8Cushion 11Speaker8ohms 150WTWEETER15 12+Bind Head Tapping ScrewD4.0/L25 Blackfor T

45、W, TERMINAL10 13Cushion110LX14WX1.0T2 14Cushion265LX14WX1.0T2 15Metal Grille 20YAMAHA LogoBADGE 21Cushionfor LOGO 22Push NutSPN-4201 23+Cup ScrewD4.0/L16 Blackfor METAL GRILLE801 24Metal Handle05 25Tripod Support Mount 26+Flat Head Tapping ScrewD5.0/L25 Blackfor TSM4 28Network 33+Bind Head Tapping S

46、crewD3.0/L20 Blackfor NETWORK CROSSOVER4 34Phone Jack06 35Neutrik NL4MPSPEAKON06 36Terminal PLATE2 HOLES, without LABEL 38Nutfor NEUTRIK201 39+Flat Head Machine ScrewM3.0/L12 Blackfor NEUTRIK201 40Rubber Foot4 42+Bind Head Wood ScrewD5.0/L30for RUBBER FOOT4 43PolyswitchRXE05003 AAX58850 AAX59650 AAX59660 JAY21400 AAX59670 AAX59680 AAX59690 AAX59700 AAX59750 AAX59760 V6290000 WA764400 WA748900 WD887400 AAX59770 AAX59790 VI064700 WA753900 LAY00180 AAX59840 ES200030 V5993400 AAX59860 AAX59870 VV216100 * * * * * * * * * * * * * * A A BB A-A B-B 15 23 15 12 5 23 23 23 12