Yorkville Bass Master 50 Service Manual

Page 1

Yorkville

SERVICE
MANUAL

WORLD HEADQUARTERS

CANADA U.S.A.
Yorkville Sound Yorkville Sound Inc.
550 Granite Court 4625 Witmer Industrial Estate
Pickering, Ontario Niagara Falls, New York
L1W-3Y8 CANADA 14305 USA
Voice: (905) 837- 8481 Voice: (716) 297- 2920
Fax: ()905 837- 8746 Fax: ()716 297- 3689
-_ ,-
-" V r. . sm»bm50.pdf Sept/98
Yorkville "

Quality and Innovation Since 1963

Printed' In Canada

Page 2

RISK OF ELECTRIC SHOCK
DO NOT OPEN
RISDUE DE CHOC ELECTRIQUE
NE PAS OUVRIR

INSTRUCTIONS PERTAINING TO A
RISK OF FIRE, ELECTRIC SHOCK, OR
INJURY T0 PERSONS.

CAUTION:

DO NOT REMOVE COVER (OR BACK).
NO USER SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.

Read Instructions:

The Owner's Manual should be read and understood
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 Sources:
Your unit should be connected to a power source only of the
voltage specIerd 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 should 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.

INSTRUCTIONS RELATIVES A U
RISOUE DE FEU, CHOC ELECTRIOUE,
0U BLESSURES AUX PERSONNES.

, AFIN DE REDUIRE LES RISQUE DE CHOC
ELECTRIQUE, N'ENLEVEZ PAS LE COUVERT (0U
NE CONTIENT AUCUNE

PIECE REPARABLE PAR L'UTILISATEUR.

CONSULTEZ UN TECHNICIEN
QUALIFIE POUR L'ENTRETIENT.

Veuillez lire le manuel:

II contient des informations qui devraient étres comprises
avant I'operation de votre appareil. Conservez S.V.P. ces
instructions pour consultations ultérieures

Emballage:
Conservez Ia boite au cas ou I'appareil devait étre
retourner pour reparation.

Warning:

Attention: Lors de l'utilisation de produits électrique,
assurez»vous d'adhérer a des precautions de bases
inciuant celle qui suivent:

Aiimentation:

Lappareil ne doit étre branche qu'a une source d'alImentatIon
correspondant au voltage specIfie dans le manuel ou tel quindique
sur l'appareil. Cet appareil est equipe dune prise dalimentatlon
polarIsee. Ne pas utilIser cet appareil aveC un cordon de
raccordement a moins qu'il soit possIble dinserer completement
les trois lames. Des precautions doivent etres prIses afin d'eviter
que le systeme de miss a la terre de lappareil ne soit desengage.

Cordon d'alimentation:
Evitez d'endommager le cordon d'alImentation. N'UTILISEZ PAS
L'APPAREIL si le cordon d'alimentation est endommage.

Service:
Consultez un technIcIen qualier pour lentretien de votre apparell.

sale7v3 doc Version 3.5 Mar 96

BM50 Parts List 9/29/98

vs No. Description . Description
6405 RED 300 LED 1V7 5MA BRIeHT PACE 4824 1/4w 1K5 5% T&Fi RES 3
6455 1N4004 400v 1A0 DIODE T&R 4525 um 1K5 5% T5R RES 1
6525 1N4148 75v 0A45 DIODE T&R 4547 1/4w 2K2 5% T&R RES 5
6527 1N5402 200v 3A0 DIODE 4525 1/4W 3K5 5% T5R RES 5
6524 1N5246B 16v0 0W5 ZENER 5% T&R 4829 1/4w 10K 5% T&Fi RES 4
6463 1N5251BRL 22v0 0W5 ZENER 5% T&R 4830 /4w 15K 5% T&Fi RES 5
5101 Bc550c T092 NPN TRANS. T&R 4552 1/4w 22K 5% T&R RES 5
5102 Bc5600 TO92 PNP TRANS. T&R 4534 um 47K 5% T5R RES 2
5119 2N5538 T092 N CHAN J FETT&H 4538 1/4W 100K 5% T&Fi RES 2
6774 50139 T0126 NPN TRANS 4544 um 1M 5% T8R RES 2
6917 BDV64B T0218 PNP DARLINeTON
6915 BDV65B T0218 NPN DARLINeTON
6552 TL072CP Ic FET DUAL OP AMP
5400 710P 100v10%CAP T&R TuBuLAR NPO
5402 715P 100v10%CAP T&R TuBuLAR NPO
5410 1001: 100v10%CAP T5R BEAD NPO 9515 I2" P0PLAR SELECT 1 4x4 ONLY 0.21
5417 530P 50v 10%CAP T5R BEAD NPO 8501 6732 x 3/5 PAN PH TAPTITE SJSOO 2
5420 550P 50v 10%CAP T5R BEAD NPO 8525 5732 x 3/4 PAN PH TAPTITE SJ500 5
5425 73N5 50v10%CAP T5R TUBuLAR Y5R 8576 1:6 x1 1.? PAN PH TYPE A 50500 4
5452 74N7 50v10%CAP T&R TUBULAR Y5R 8524 10.32 x1/2 HEX HD MS JSSOD BLK 2
6451 74N7 250v 20%CAP Ac Y ONLY RADIOMM 5755 1410 x 5/4 PAN PH TYPE A JSSOO BLACK 5
5376 76N5 50v 5%CAP TaR BEAD X7Fi 8751 4:10 x 7/5 FLAT PHIL TYPE A JSSODBLK 6
5554 710N 250v 20%CAP RAD POLYEILM BULK 5545 1032 X1 1/5 FLAT PH MS 50500 2
5304 722N 50v10%CAP T5R BEAD X7Fi 8770 0420 X1 5/15 TRUSS PH MS JSSDU 4
6455 722N 275v 20%CAP AC x2 RAD BLK15MM 8905 YORKVILLE PRODuCT SCHEMATIC 1
5306 733N 50v10%CAP TaR BEAD X7Fi 8556 171 X 1J4 NYL0N SPACER xSP42 5
5314 100N 50v10%0APT5R BEAD X7R 7357 10" 4R 50W SPEAKER BASS e0ITAR 1
5255 710 531/ 20%CAP T&Fi RADIAL ELE.2" 5511 #5 FLAT WASHER NYLON 2
5257 7202 65v 20%CAP TSIR RADIAL ELE.2 5552 #5 INTERNAL TOOTH LOCKWASHER 1
5259 7407 63v 20%CAP T&R RADIAL ELE.2" 5817 4:10 FLAT WASHER BLACK OXIDE 2
5251 7100 16v 20%CAP NONP0LAR T5R .2" 5695 SPST R0KR sw QuIK 150" Ac PWR BDBL 1
5250 7220 50v 20%CAP T&Fi RADIAL ELE.2" 5940 RED 15 Awe TR764 PREEUSED 2.166
5961 7330 16v 20%CAP NONP0LAR T5R RAD 5941 BLACK 15 Awe TRVSA PREFuSED 2.166
5255 7650 251/ 20%CAP T&Fi RADIAL ELE.2" 5943 eREEN 22 Awe TR64 PREFUSED WIRE 0 25
5257 1000 25v 20%CAP T&R RADIAL ELE.2" 3949 18Awe eRN/YLLW STRANDED WIRE 0.415
5557 22000 50v 20%CAP RADIAL ELECT B0LK 5955 BLACK 15Awe 35STND WIRE DOUBLE INS 1.355
4409 710K SCVREV/AUDIO STYLE"P14"15MM 1309 EL0C74OB40K/4OW/SOB XFMR 1

750K 5B7L|NEAR STYLE"P14"I6MM

30 X 50 X 1.5MIL PLASTIC BAG

PLASTlC FOOT BLACK

CLIP 205x032 I4716AWG DlSC/lNSUL

CLIP 250x032 18722AWG DlSCO/INSL

CLIP 205/167X020 18722AWG DISCO/INS

250 MALE PCB TAB BULK ON CATRIGE

M20302 PLAlN PC MNT JK SKT

M203702A GOLD TlP PC MNT JK SKT

M203702E GLOD SLV PC MNT JK SKT

0,089 OD SMALL EYELET ELECTROPLATED

lNTERNATIONAL PC MOUNT FUSEHOLDER

0.800 AMP SLOVBLO ,25XI.25 FUSE

4.0 AMPFASTVBLO 25X1.25 FUSE

9.5" STRAP HANDLE, PLASTIC COVERS

10732 T NUT

TRANSISTOR MOUNTING BRACKET

BELLY BUTTON #BBI CORDS CANADA

SNAP ON I 5" INSULATlNG BUSHING

#8 GROUND LUG ZIERICK 5057169

ROUND BUMPER BUTTON BLACK

NYLON SECURVAVTACH MlNl PLASTlC TIE

4" NYLON CABLE TIE

SQUARE BUMPER BUTTON BLACK

L-(7)444-N-m-N_mg___QNNNL_ANNSASNLASU.__-CNL__m_m_mm_L__N_LNLmNA

8693 S ROTARY KNOB GREY

3481 8'7 3/18 SJT AC LINE CORD 250 CLlPS

3834 HEYCO #1214 STRAIN RELIEF I
8800 6732 KEPS NUT ZINC 7
8841 10732 KEPS NUT ZINC 2
8698 1l4720 CAGE NUT C7998142027 4
3830 T0218 PREGREASED MICA 5677872AP 2
4597 22AWG STRAN TC WIR 6
4599 22AWG SOLID SC WIR T&R 20
4729 5.0W 0R27 5% BLK RES 2
4815 1/4W 12R 5% T&R RES 2
4618 1/2W 22R 5% T&R RES 1
4817 1/4W 47R 5% T&R RES 1
4692 5.0W100R 5% BLK RES 1
4852 1/4W100R 5% TSIR RES 1
4867 1/4W 270R 5% T&R RES 2
4873 1/4W 680R 5% TSIR RES 3
4623 1l2W 1K 5% T&R RES 2
4823 1/4W 1K 5% T&R RES 1