Yorkville Pulse Speaker Service Manual 电路图.pdf

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1、PL8 M435C Schematic M435C PCB PL10/PM10 M435 Schematic M435 PCB PL1070V M435D Schematic M435D PCB PL12/PM12 M435 Schematic M435 PCB PL315 M535 Schematic M535 PCB PL3215 M535A Schematic M535A PCB PR315 M536 Schematic M536 PCB PR418 M537 Schematic M537 PCB PS18 M534 Schematic M534 PCB PS110P M530 Sche

2、matic M530 PCB PS210P M508A Schematic M508A PCB M509 Schematic M509 PCB PS210PX M508C Schematic M508C PCB M532 Schematic M532 PCB PS218P M508A Schematic M508A PCB M531 Schematic M531 PCB Sept /98 pu-serv1.pdf Version1.5 SERVICE MANUAL Page 1 U.S.A. Yorkville Sound Inc. 4625 Witmer Industrial Estate

3、Niagara Falls, New York 14305 USA Voice: (716) 297-2920 Fax: (716) 297-3689 WORLD HEADQUARTERS CANADA Yorkville Sound 550 Granite Court Pickering, Ontario L1W-3Y8 CANADA Voice: (905) 837-8481 Fax: (905) 837-8746 Made in Canada RadioFans.CN 收音机爱 好者资料库 Manual-Service-pulse-1v1.pdf Nov 15/2000 INSTRUCT

4、IONS PERTAINING TO A RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS. CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. Read Instructions: The Owners Manual should be read and understood

5、before operation of your unit. Please, save these instructions for future reference. Packaging: Keep the box and packaging materials, in case the unit needs to be returned for service. Warning: When using electric products, basic precautions should always be followed, including the following: Power

6、Sources: Your unit should be connected to a power source only of the voltage specified in the owners manual or as marked on the unit. This unit has a polarized plug. Do not use with an extension cord or receptacle unless all three blades can be fully inserted to prevent blade exposure. Precautions s

7、hould be taken so that the grounding scheme on the unit is not defeated. Power Cord: The AC supply cord should be routed so that it is unlikely that it will be damaged. If the AC supply cord is damaged DO NOT OPERATE THE UNIT. Service: The unit should be serviced only by qualified service personnel.

8、 INSTRUCTIONS RELATIVES AU RISQUE DE FEU, CHOC LECTRIQUE, OU BLESSURES AUX PERSONNES. AVIS: AFIN DE RDUIRE LES RISQUE DE CHOC LECTRIQUE, NENLEVEZ PAS LE COUVERT (OU LE PANNEAU ARRIRE). NE CONTIENT AUCUNE PICE RPARABLE PAR LUTILISATEUR. CONSULTEZ UN TECHNICIEN QUALIFI POUR LENTRETIENT. Veuillez lire

9、le manuel: Il contient des informations qui devraient tres comprises avant lopration de votre appareil. Conservez S.V.P. ces instructions pour consultations ultrieures Emballage: Conservez la boite au cas ou lappareil devait tre retourner pour rparation. Warning: Attention: Lors de lutilisation de p

10、roduits lectrique, assurez-vous dadhrer des prcautions de bases incluant celle qui suivent: Alimentation: Lappareil ne doit tre branch qu une source dalimentation correspondant au voltage spcifi dans le manuel ou tel quindiqu sur lappareil. Cet appareil est quip dune prise dalimentation polarise. Ne

11、 pas utiliser cet appareil avec un cordon de raccordement moins quil soit possible dinsrer compltement les trois lames. Des prcautions doivent tres prises afin deviter que le systme de mise la terre de lappareil ne soit dsengag. Cordon dalimentation: vitez dendommager le cordon dalimentation. NUTILI

12、SEZ PAS LAPPAREIL si le cordon dalimentation est endommag. Service: Consultez un technicien qualifi pour lentretien de votre appareil. IMPORTANT SAFETY INSTRUCTIONS safe_v3.doc Version 3.5 Mar 98 YSP#7270 N-252.RCF 8R-30W-1 SRT JK1 SRT JK2 7332 8_100W 8-OHMS SPKR1 10 9 8 7 6 5 4 3 2 1 # DESCRIPTION

13、OF CHANGEVER#DATE MODEL(S):- D D D D D D D D D NOV/06/97 V V V V V V V V V 1.00 N N N N N N N N N FIRST_PROTOTYPE PL8 M435C.SCH_DATABASE_HISTORY 22AWG 0.30mH L1 1141 LB1 100V 2u2 C1 100V 1u5 C3 3R9 5W R2 100V 3u3 C2 YORKVILLE NAME: MODELS: SCH ISSUE: TITLE: DATE: 1.00PL8 PL8 PULSE PL8 NOV/06/97 SOLD

14、ERSIDE M435-4.00 M435-4.00 INSIDE WIRE OUTSIDE WIRE L1 COIL PART#3784 0.30MH LINE_IN HI . . HI. . . LO- . . LO+ . . JK1 LINE_IN . FUNCTION MODELPCB#ISSUE# 4.00PL8M435C 100V1u5 R1 11 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D DEC/08/97 OCT/15/97 JUN/12/97 JAN/28/97 JAN

15、/97 V V V V V V 4.00 3.00 2.00 1.00 1.00P N N N N N N TABS_ADDED_FOR_PL1070V REDONE_FOR_3_UP_SPREAD_FOR_TABS REDONE_FOR_C8/C12 ADD_R2 FIRST_PROTOTYPE PL10/1070V/PM10/PL12/PM12/C12/C8 M435.PCB_DATABASE_HISTORY R2 5WATT 3R9 . LIGHT_SOCKET #1141 . C2 100V 3u3 C1 100V 2u2 ASSEMBLY M435-4.00 PCB MECH M43

16、5-4.00 BLACK RED C8/PL8 3.00 P10/P12/C12 M435 VERSION BLACK YELLOW JUMPER RadioFans.CN 收音机爱 好者资料库 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D D D D JAN/97 V V V V V V V V V 1.00 N N N N N N N N N FIRST_PRODUCTION PL-10 M435.SCH_DATABASE_HISTORY SRT JK1 SRT JK2 7278 10-

17、75W 8-OHMS SPKR1 5R6 5W R2 22AWG 0.22mH L1 1141 LB1 100V2u2 C1 100V3u3 C2 3R3 5W R1 PCB#: YORKVILLENAME: MODELS:SCH ISSUE: TITLE: DATE: M435 PL10/PL10M_CROSS-OVER PULSE PL10.SCH JAN/30/97 PL-10 1.00 1 2- 2+ 1- 1+ YRSL_PT#6956 SPEAKON N252XN 1DRIVER 8R-30W SOLDERSIDE M435-4.00 M435-4.00 INSIDE WIRE O

18、UTSIDE WIRE L1 COIL PART#3780 0.22MH LINE_IN HI . . HI. . . LO- . . LO+ . . JK1 LINE_IN . . FUNCTION MODELPCB#ISSUE# 4.00 PL12/PM12 M435 PL10/PM10 R1 5WATT 3R3 11 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D DEC/08/97 OCT/15/97 JUN/12/97 JAN/28/97 JAN/97 V V V V V V 4.0

19、0 3.00 2.00 1.00 1.00P N N N N N N TABS_ADDED_FOR_PL1070V REDONE_FOR_3_UP_SPREAD_FOR_TABS REDONE_FOR_C8/C12 ADD_R2 FIRST_PROTOTYPE PL10/1070V/PM10/PL12/PM12/C12/C8 M435.PCB_DATABASE_HISTORY R2 5WATT 5R6 FUNCTION PART# . LIGHT_SOCKET #1141 . . C2 100V 3u3 C1 100V 2u2 ASSEMBLY M435-4.00 PCB MECH M435-

20、4.00 BLACK RED C8/PL8 3.00 P10/P12/C12 M435 VERSION BLACK YELLOW 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D D D JAN/28/98 DEC/97 V V V V V V V V 1.10 1.00 N N N N N N N N CORRECT_AUTOXFMR FIRST_PRODUCTION PL-1070V M435.SCH_DATABASE_HISTORY 7278 10-75W 8-OHMS SPKR1 5R6

21、 5W R2 22AWG 0.22mH L1 1141 LB1 100V2u2 C1 100V3u3 C2 3R3 5W R1 PCB#:YORKVILLENAME: MODELS:SCH ISSUE: TITLE: DATE: M435D PL1070V PULSE PL1070V.SCH JAN/28/98 PL-1070V 1.10 N252XN 1DRIVER 8R-30W BLK BRN RED ORN YEL GRN BLU VIO . #1293 150W 6W 12W 25W 50W 100W M435-4.00 INSIDE WIRE OUTSIDE WIRE L1 COIL

22、 PART#3780 LINE_IN HI . . HI. . . LO- . . LO+ . . JK1 LINE_IN . FUNCTION MODELPCB#ISSUE# 4.00PL1070VM435D R1 5WATT 3R3 11 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D DEC/08/97 OCT/15/97 JUN/12/97 JAN/28/97 JAN/97 V V V V V V 4.00 3.00 2.00 1.00 1.00P N N N N N N TABS_A

23、DDED_FOR_PL1070V REDONE_FOR_3_UP_SPREAD_FOR_TABS REDONE_FOR_C8/C12 ADD_R2 FIRST_PROTOTYPE PL10/1070V/PM10/PL12/PM12/C12/C8 M435.PCB_DATABASE_HISTORY R2 5WATT 0.22MH 5R6 . LIGHT_SOCKET #1141 . C2 100V 3u3 C1 100V 2u2 BLACK RED C8/PL8 3.00 P10/P12/C12 M435 VERSION BLACK YELLOW RadioFans.CN 收音机爱 好者资料库

24、10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D D D D JAN/97 V V V V V V V V V 1.00 N N N N N N N N N 1ST_PRODUCTION PL-12/12M M435.SCH_DATABASE_HISTORY SRT JK1 SRT JK2 7279 12-75W 8-OHMS SPKR1 5R6 5W R2 22AWG 0.22mH L1 1141 LB1 100V2u2 C1 100V3u3 C2 3R3 5W R1 PCB#:YORKVIL

25、LENAME: MODELS:SCH ISSUE: TITLE: DATE: M435 PL12/PL12M_CROSS-OVER PULSE PL12.SCH JAN/28/97 PL-12 1.00 1 2- 2+ 1- 1+ YRSL_PT#6956 SPEAKON YSP#7270 N-252.RCF 8-OHMS SOLDERSIDE M435-4.00 M435-4.00 INSIDE WIRE OUTSIDE WIRE L1 COIL PART#3780 0.22MH LINE_IN HI . . HI. . . LO- . . LO+ . . JK1 LINE_IN . . F

26、UNCTION MODELPCB#ISSUE# 4.00 PL12/PM12 M435 PL10/PM10 R1 5WATT 3R3 11 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D DEC/08/97 OCT/15/97 JUN/12/97 JAN/28/97 JAN/97 V V V V V V 4.00 3.00 2.00 1.00 1.00P N N N N N N TABS_ADDED_FOR_PL1070V REDONE_FOR_3_UP_SPREAD_FOR_TABS RED

27、ONE_FOR_C8/C12 ADD_R2 FIRST_PROTOTYPE PL10/1070V/PM10/PL12/PM12/C12/C8 M435.PCB_DATABASE_HISTORY R2 5WATT 5R6 FUNCTION PART# . LIGHT_SOCKET #1141 . . C2 100V 3u3 C1 100V 2u2 ASSEMBLY M435-4.00 PCB MECH M435-4.00 BLACK RED C8/PL8 3.00 P10/P12/C12 M435 VERSION BLACK YELLOW 100V 1u5 C5 16AWG 2.56mH L1

28、18AWG 1mH L3 100V 4u7 C4 100V 4u7 C3 100V 4u7 C1SRT INPUT JK11 2 3 4 5 6 SRT INPUT JK21 2 3 4 5 6 PT#7443 158R_200W SP1 HO1_HORN #7283_DRIVER 116R_50W SP2 YORKVILLENAME:PCB#&VER: MODELS:SCH ISSUE: TITLE: DATE: M535-1.00 PL315 PULSE PL315.SCH FEB/13/97 X-OVER_PL315 1.00 #1156 LB1 22AWG .15mH L4 22R 5

29、W R2 #7417 2.58R_30W SP3 5R6 10W R1 100V 2u2 C2 18AWG 1mH L2 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D D D D FEB/13/97 V V V V V V V V V 1.00 N N N N N N N N N FIRST_PROTOTYPE PL315 M535.SCH_DATABASE_HISTORY 1 2- 2+ 1- 1+ YRSL_PT#6956 M535-1.00P2 INSIDE WIRE OUTSIDE

30、WIRE L3 PART#3785 COIL 22AWG 150UH MID. . . LO+ 250TAB FUNCTION LO- . . MID . . HI . . HI. . . C3 100V 4u7 R2 5WATT 22R F F F JK2 SPKON1 FUNCTION PART#6956 SPEAKON_JACK C4 C2C1 100V2u2 5R6 10WATT 100V 4u7 $1 . . . . 18_AWG PT#3703 1MH L1 COIL 16_AWG PART#3704 2.56MH 100V 4u7 MODELPCB#ISSUE# 1.00PL31

31、5M535 11 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D D D D D FEB/97 V V V V V V V V V V 1.00 N N N N N N N N N N FIRST_PROTOTYPE PL315-PL3215 M535.PCB_DATABASE_HISTORY L4 18_AWG PART#3703 1MH LB1 LIGHT_SOCKET #1156 JK1 LINE_IN C5 100V1u5 HI+ PL315 PL3215 1.00 VERSION M

32、535 RED BLACK BROWN BLACK YELLOW 100V1U5 C8 SRT 22R 5W R1 100V15u C6 L1 16AWG 690uh 18AWG 370uH L2 SRT JK11 2 3 4 5 6 C1 100V 15u #7417 2.58R_30W . 158R_200W #7308 SP2 100V 10u C2 100V4u7 C4 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D D D D FEB/13/97 V V V V V V V V V

33、1.00P N N N N N N N N N 1ST_PROTOTYPE PL3215 M535.SCH_DATABASE_HISTORY 158R_200W #7308 SP1 PCB#:YORKVILLENAME: MODELS:SCH ISSUE: TITLE: DATE: M535A PL-3215 PULSE PL3215.SCH FEB/13/97 PL-3215 1.00 #7417 2.58R_30W . 22AWG 150uH L3 #7272 18R_50W_DRIVER HO1_HORN_BOLT-ONSP3 1 2- 2+ 1- 1+ YRSL_PT#6957 SPK

34、ON LB1 13620R2 ARE IN SERIES THAT FILAMENTS BULB WIRED SO DUAL FILAMENT SHEAR M535-1.00P2 INSIDE WIRE OUTSIDE WIRE L3 PART#3785 22_AWG 150uH MID. . . LO+ 250TAB FUNCTION LO- . . MID . . HI . . HI. . . C3 100V 4u7 R2 5WATT 22R F F F JK2 LINE_IN SPKON1 FUNCTION PART#6956 SPEAKON_JACK C4 100V 15u C2 10

35、0V 15u C1 100V 10u $1 L1 COIL 16_AWG PT#3773 690uH MODELPCB#ISSUE# 1.00 M535APL3215 11 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D D D D D FEB/97 V V V V V V V V V V 1.00 N N N N N N N N N N FIRST_PROTOTYPE PL315-PL3215 M535.PCB_DATABASE_HISTORY L4 18_AWG PART#3720 370

36、uH LB1 LIGHT_SOCKET #1156 JK1 LINE_IN C5 100V1u5 PL315 PL3215 1.00 VERSION M535 FOR PL3215 SOCKET STUFF THIS DO NOT YELLOW RED BLACK BLACK BROWN BLACK RED RED BLACK 100V1U5 C3 SRT 22R 5W R2 100V10u C2 L1 16AWG 690uh 18AWG 370uH L2 SRT JK11 2 3 4 5 6 8R 10W R1 154R_200W #7442 SP1 100V3u3 C1 10 9 8 7

37、6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D D D D FEB/20/97 V V V V V V V V V 1.00P N N N N N N N N N 1ST_PROTOTYPE PR315 M536.SCH_DATABASE_HISTORY PCB#:YORKVILLENAME: MODELS:SCH ISSUE: TITLE: DATE: M536 PR-315 PULSE PR315.SCH FEB/26/97 PR-315 1.00 #7417 2.58R_30W TLCSP3 22AWG

38、150uH L3 #XXXX N252XN D90_HORN_BOLT-ONSP2 1 2- 2+ 1- 1+ YRSL_PT#6957 SPKON LB1 13620R2 ARE IN SERIES THAT FILAMENTS BULB WIRED SO DUAL FILAMENT SHEAR M536-1.00P1 MID- . . LO+ 250TAB FUNCTION LO- . . MID+ . . HI+ . . HI- . . F F F JK2 LINE_IN SPKON1 FUNCTION PART#6956 SPEAKON_JACK C2 100V 10u C1 100V

39、3u3 R1 8R 10WATT MODELPCB#ISSUE# 1.00 M536PR315 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- FEB/971.00FIRST_PROTOTYPE PR315 M536.PCB_DATABASE_HISTORY L1 18_AWG COIL 690uH PART#3773 18_AWG COIL 370uH PART#3720 R2 22R 5WATT INSIDE WIRE OUTSIDE WIRE L3 22_AWG 150uH PART#3785 FUNTCION JK1 LINE_IN C3 100V1

40、u5 M536 1.00 VERSION RED BLACK BROWN BLACK YELLOW BLACK 100V1U5 C9 SRT 100V3u3 C10 L1 16AWG 540uh 18AWG 1mH L2 SRT JK11 2 3 4 5 6 100V 10u C5 #7263 18-1743 4R SUBWFER 18AWG 430uh L3 100V 10u C6 100V2u2 C7 100V15u C4 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D NOV/18/97 J

41、UL/15/97 JUN/03/97 MAY/97 APR/97 V V V V V 3.10 3.00 2.00 1.00 1.00P N N N N N PC#5529_LAMPS_#1141-P45T PC#XXXX_MOVE_LAMPS_TO_I/P_PCB PC#XXXX_WOOFER_POLARITY_SWITCHED_ WOOFER_POLARITY_SWITCHED_R4_3R9-8R 1ST_PROTOTYPE PR418 M537.SCH_DATABASE_HISTORY 100V15u C3 #N252XN N252_DRIVER 8R10W MID 100V15u C2

42、 PCB#:YORKVILLENAME: MODELS:SCH ISSUE: TITLE: DATE: M537 PR418 PULSE PR418.SCH NOV/18/97 PR418 3.10 #CP16 BEYMA_CP16 8R HIGH 18AWG 130uH L5 8R2 10W R3 100V15u C1 1 2- 2+ 1- 1+ YRSL_PT#6955 SPKON 2R 10W R1 8R2 10W R4 12R 10W R2 14AWG 900uh L4 321 100V10u C8 #7264 10-4299 8R LOW INPUT BOARD LINE ARE O

43、N A BREAKAWAY ALL COMPONENTS WITHIN DOTTED M537 M537-5.00 R4 3R9 10WATT 12 11 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D JAN/08/98 NOV/18/97 . NOV/12/97 . JUL11/97 JUN/03/97 MAY/97 FEB/97 V V V 5.00 . . 4.00 . 3.00 2.00 . 1.00 N N N BULBS_ADDED_TO_INPUT_PCB PC#5529_LITE-BUL

44、BS_#1156-P45T PC#5515_EYELETS_CHANGED I/P_PCB_REDONE_FOR_CLEARANCE TO_INPUT_PCB PC#XXXX_LIGHT_BULBS_MOVED_ PC#5416_POLARITY_OF_LO_REVERSED FIRST_PRODUCTON FIRST_PROTOTYPE PR418 M537.PCB_DATABASE_HISTORY SW+ . LO- . MODELPCB#ISSUE# . . . PR418 M537 5.00 LO+ . SW- . L3 18_AWG COIL 430uH PART#3813 . C1

45、 100V 15u MID- . HI- . L1 16_AWG COIL 540uH PART#3761 C7 100V2u2 L2 18_AWG 1MH COIL PART#3703 MID+ . C10 100V3u3 R3 8R 10WATT C5 10u 100V R1 2R 10WATT V TR C4 100V 15uR2 12R 10WATT L4 16_AWG 900uH COIL PART#3767 C9 100V1u5 C8 10u 100V C6 10u 100V C3 100V 15u C2 100V 15u HI+ . SPKON2 FUNCTION PART#69

46、56 SPEAKON_JACK L5 PART#3766 18AWG COIL 130uH WC4 WC3 WC1 WC2 V TR V TR V TR . FUNCTION V TR V TR . FUNCTION JK1 LINE_IN JK2 LINE_IN ASSEMBLY M537-5.00 BULB UP MOUNTED HERE #3652 LAMP BULB UP MOUNTED HERE #3652 LAMP PCB MECH M537-5.00 3 C9,C10 BEND OVER AND RTV AFTER SHEARING 2 BEND 10W RESISTOR LEA

47、DS AS SHOWN ADD RTV AT THE ENDS OF THE RESISTORS FROM THE BOTTOM AND ARE USED AS STAND-OFFS 1 EYELETS AT 10W RESISTORS ARE INSTALLED PRODUCTION NOTES VER 5.00 BLK BLK BLK RED BLK RED BROWN BROWN YELLOW YELLOW PR418 M537 LOW LOW SUB SUB MID MID HIGH HIGH PCB#:YORKVILLENAME: MODELS:SCH ISSUE: TITLE: D

48、ATE: M534 PS18 PULSE M534.SCH MAR/97 X-OVER 1.00 100V 15u C1 8MH L1 100V 15u C3 100V 10u 100V 10u #PN7285 18 8R_300W SP1 100V 15u C2 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D D D MAR/97 FEB/97 V V V V V V V V 1.00 1.00P N N N N N N N N REMOVED_BREAKER_&_PHASE_SWITCH

49、FIRST_PROTOTYPE PS18 M534.SCH_DATABASE_HISTORY SRT . . 100V 10u . . . SRT . . 1 2- 2+ 1- 1+ YRSL_PT#6956 100V 4u7 100V 10u COIL IS OFF THE BOARD TO COIL ALTERNATE CIRCUIT M534-1.00 JK3 JK2 FUNCTION PART#6956 SPEAKON_JACK #3569 FUNCTION #3569 MODELPCB#ISSUE# 1.00 M534 PS18 #3569 FUNCTION 11 10 9 8 7 6 5 4 3 2 1 #DESCRIPTION OF CHANGEVER#DATE MODEL(S):- D D D D D D D D D MAR/97 JAN/97 V V V V V V V V V 1.00 1.0P N N N N N N N N N FIRST_PRODUCTION FIRST_PROTOTYPE PS18 M534.PCB_DATABASE_HISTORY 100V 15u COIL . . OUT- TO_SPKR- . . . 100V 15u 100V 15u TO_S