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WEB ACCESS: http://www.yorkville.com

WORLD HEADQUARTERS CANADA Yorkville Sound
550 Granite Court Pickering, Ontario L1W-3Y8 CANADA Voice: (905) 837-8481 Fax: (905) 837-8746

U.S.A. Yorkville Sound Inc.
4625 Witmer Industrial Estate Niagara Falls, New York 14305 USA Voice: (716) 297-2920 Fax: (716) 297-3689

SERVICE MANUAL
Manual-Service-sr300-1v1.pdf

Quality and Innovation Since 1963
Printed in Canada

SR-300

IMPORTANT SAFETY INSTRUCTIONS

INSTRUCTIONS PERTAINING TO A RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS.
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS INSIDE.

INSTRUCTIONS RELATIVES AU RISQUE DE FEU, CHOC ÉLECTRIQUE, OU BLESSURES AUX PERSONNES.
AFIN DE REDUIRE LES RISQUE DE CHOC ELECTRIQUE, N'ENLEVEZ PAS LE COUVERT (OU LE PANNEAU ARRIERE). NE CONTIENT AUCUNE PIECE REPARABLE PAR L'UTILISATEUR.

CAUTION:

AVIS:

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

CONSULTEZ UN TECHNICIEN QUALIFIE POUR L'ENTRETIENT.

Read Instructions: Packaging: Warning:

The Owner's Manual should be read and understood before operation of your unit. Please, save these instructions for future reference. Keep the box and packaging materials, in case the unit needs to be returned for service. When using electric products, basic precautions should always be followed, including the following:

Veuillez lire le manuel: Emballage: Warning:

Il contient des informations qui devraient êtres comprises avant l'opération de votre appareil. Conservez S.V.P. ces instructions pour consultations ultérieures Conservez la boite au cas ou l'appareil devait être retourner pour réparation. Attention: Lors de l'utilisation de produits électrique, assurez-vous d'adhérer à des précautions de bases incluant celle qui suivent:

Power 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 the plug can be fully inserted. Precautions should be taken so that the grounding scheme on the unit is not defeated.

Alimentation:

Hazards:

Do not place this product on an unstable cart, stand, tripod, bracket or table. The product may fall, causing serious personal injury and serious damage to the product. Use only with cart, stand, tripod, bracket, or table recommended by the manufacturer or sold with the product. Follow the manufacturer's instructions when installing the product and use mounting accessories recommended by the manufacturer. The apparatus should not be exposed to dripping or splashing water; no objects filled with liquids should be placed on the apparatus. Terminals marked with the "lightning bolt" are hazardous live; the external wiring connected to these terminals require installation by an instructed person or the use of ready made leads or cords. No naked flame sources, such as lighted candles, should be placed on the apparatus.

L'appareil ne doit être branché qu'à une source d'alimentation correspondant au voltage spécifié dans le manuel ou tel qu'indiqué sur l'appareil. Cet appareil est équipé d'une prise d'alimentation polarisée. Ne pas utiliser cet appareil avec un cordon de raccordement à moins qu'il soit possible d'insérer complètement les trois lames. Des précautions doivent êtres prises afin d'eviter que le système de mise à la terre de l'appareil ne soit désengagé.

Hazard:

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.

Ne pas placer cet appareil sur un chariot, un support, un trépied ou une table instables. L'appareil pourrait tomber et blesser quelqu'un ou subir des dommages importants. Utiliser seulement un chariot, un support, un trépied ou une table recommandés par le fabricant ou vendus avec le produit. Suivre les instructions du fabricant pour installer l'appareil et utiliser les accessoires recommandés par le fabricant. Il convient de ne pas placer sur l'appareil de sources de flammes nues, telles que des bougies allumées. L'appeil ne doit pas être exposé à des égouttements d'eau ou des éclaboussures et qu'aucun objet rempli de liquide tel que des vases ne doit être placé sur l'appareil. Les dispositifs marqués d'une symbole "d'éclair" sont des parties dangereuses au toucher et que les câblages extérieurs connectés à ces dispositifs de connection extérieure doivent être effectivés par un opérateur formé ou en utilisant des cordons déjà préparés.

Service:

Cordon d'alimentation: Service:

The unit should be serviced only by qualified service personnel.

Évitez d'endommager le cordon d'alimentation. N'UTILISEZ PAS L'APPAREIL si le cordon d'alimentation est endommagé. Consultez un technicien qualifié pour l'entretien de votre appareil.

SAFE_V4.doc Version 4.0 02/11/99 11:54 AM

YS No. 3747 6405 6400 6401 6825 6438 6827 6434 6733 6461 6824 6463 5101 5102 5103 5104 6780 5119 6810 6811 6814 6815 6988 6991 6840 6882 6884 6745 6880 6467 5200 5406 5410 5416 5206 5422 5423 6451 5204 6435 5224 5227 5228 5314 5231 5255 5257 5281 5260 5961 5267 5630 5869 4390 4522 714 3819 3489 3491 3682 3452 3498 3528 3451 3412 3414 2427 2405 8434 3501 3745 3885 3795 3810 3827 8433 8661 3484 3834 3593 3654 3655 5989 8793 8800 8788 3830

Description CUSTOM .5 LED SPACER BLACK RED 3MM LED 1V7 5MA BRT YEL 3MM LED 1V9 6MA HIGHEFF GRN 3MM LED 1V9 6MA HIGHEFF 1N4148 75V 0A45 DIODE T&R 1N4004 400V 1A0 DIODE T&R 1N5402 200V 3A0 DIODE 6A2 200V 6A0 DIODE BAT85 30V 0A2 DIODE SCHTKYT&R 1N5240BRL 10V0 0W5 ZENER 5% T&R 1N5246B 16V0 0W5 ZENER 5% T&R 1N5251BRL 22V0 0W5 ZENER 5% T&R BC550C TO92 NPN TRAN T&R TB BC560C TO92 PNP TRAN T&R TB MPSA06 TO92 NPN TRAN T&R TA MPSA56 TO92 PNP TRAN T&R TA MPSA56 TO92 PNP TRAN TA 2N5638 TO92 NCH JFET T&R TC MJF15030 T221D NPN TRAN TJ MJF15031 T221D PNP TRAN TJ MJF6668 T221D PNP TRAN DARL TJ MJF6388 T221D NPN TRAN DARL TJ MJL21194 TO3P NPN TRAN TK MJL21193 TO3P PNP TRAN TK MC33078P IC DUAL OP AMP TL072CP IC FET DUAL OP AMP NE5532N IC DUAL OP AMP LM13600N IC XCONDUCTANCE AMP 4N35 OPTO-COUPLER 10K 10% THERMISTOR NTC TO-92 _10P 200V 5%CAP T&R RAD CER.2"NPO _33P 50V 10%CAP BLK BEAD NPO 100P 100V 10%CAP T&R BEAD NPO 470P 50V 10%CAP T&R BEAD NPO __1N 400V 5%CAP T&R RAD .2"FLM __1N 50V 10%CAP T&R BEAD NPO __1N2 50V 10%CAP T&R BEAD X7R __4N7 250V 20%CAP BLK 'Y' 10MM AC _10N 100V 10%CAP T&R RAD .2"FLM _22N 275V 20%CAP BLK 'X2' 15MM AC _47N 100V 10%CAP T&R RAD .2"FLM _82N 100V 5%CAP T&R RAD .2"FLM 100N 100V 5%CAP T&R RAD .2"FLM 100N 50V 10%CAP T&R BEAD X7R 220N 63V 10%CAP T&R RAD .2"FLM __1U 63V 20%CAP T&R RAD .2"EL __2U2 63V 20%CAP T&R RAD .2"EL _10U 16V 20%CAP T&R RAD .2"NP _22U 50V 20%CAP T&R RAD .2"EL _33U 16V 20%CAP T&R RAD .2"NP 100U 25V 20%CAP T&R RAD .2"EL 330U 25V 20%CAP BLK 10X13MM EL 4700U 63V 20%CAP BLK 25X40MM ELS _10K AUD 16MM DETENT P22 __4K7 TRIM POT 1.5 MIL X 36" CLEAR POLY SHEETING ___5UH COIL 18AWG R000 AIR CORE CLIP 250X032 18-22AWG DISCO/INSL CLIP 205/187X020 18-22AWG DISCO/INS 250 MALE PCB TAB BULK CARTRIGE BND POST PCB MT HORZ QUAD ASSEMBLY 1/4" JCK PCB MT HORZ 1/4" JCK PCB MT HORZ GOLD TR_ EYELET SMALL 0.089 OD PLATED LOWPROFILE FUSEHOLDER 1/4" LITTLEFS INTERNATIONAL PC MOUNT FUSEHOLDER 5.0 AMP SLO-BLO .25X1.25 FUSE 10.0 AMP SLO-BLO .25X1.25 FUSE AP SERIES PLASTIC HANDLE PAIR B52200F006 COMP WASH #4 SMALL DUAL XSISTOR PBL SPRING PLATE ZN XSISTOR SPRING CLIP TO-220 #8 GROUND LUG ZIERICK 505-169 4" NYLON CABLE TIE SQUARE BUMPER BUTTON BLACK AP SERIES PLASTIC KNOB BUTTON KNOB FLAT GREY 8' 3/18 SJT AC LINE CORD 250WH187BL HEYCO #1214 STRAIN RELIEF PCB CONN 90 5 CIR .156 PCB CONN 4 CIR .100 LOCKING 13 CIR CABLE HOLDER .098 4 CIR CABLE HOLDER .098 4-40 HEX NUT ZINC 6-32 KEPS NUT ZINC 1/4-20 KEPS NUT ZINC TO218 PREGREASED MICA 56-78-2AP

Qty. 7 2 2 3 41 2 4 4 4 2 6 1 8 11 2 2 2 2 2 2 1 1 2 2 2 5 1 1 2 2 2 2 2 2 4 2 2 1 4 1 2 2 16 2 6 1 3 4 1 6 4 4 2 2 2 4 2 3 1 7 1 2 2 5 1 4 1 2 2 2 2 4 1 4 5 2 2 1 1 2 2 2 2 2 2 1 4

YS No. 4597 5299 4749 4748 2008 4605 2014 4604 4811 4735 4852 4921 4897 2020 4986 2025 4950 4821 2030 4869 4758 4823 4981 4824 4988 4808 4705 4847 6124 4992 4756 4943 6121 4787 4762 4829 4940 4983 4856 4953 4830 4954 6123 4833 4956 6122 4794 4878 4834 4761 4898 4942 6120 4991 4796 4841 6135 4880 4845 4809 4751 3690 3574 3603 8870 8865 8861 8801 8829 8824 8869 8999 8765 8607 3744 8818 3511 8850 3436 3587 1248

Description 22AWG STRAN TC WIR JMP 24AWG SOLID SC WIR RAD JMP 5.0W 0R15 5% BLK RES 2.0W 3R9 5% T&R 1.0W 10R 5%FLAME PROOF T&R RES 1/8W 10R 5% T&R RES 1/8W 33R 2%FLAME PROOF T&R RES 1/4W 33R2 1% T&R RES 1/4W 68R 5% T&R RES 1.0W 100R 5% T&R RES 1/4W 100R 5% T&R RES 1/4W 100R 5% .2"U T&R RES 1/4W 120R 5% T&R RES 1/8W 150R 2%FLAME PROOF T&R RES 1/4W 270R 5%MINI T&R RES 1/8W 274R 1%FLAME PROOF T&R RES 1/4W 390R 5% .2"U T&R RES 1/4W 470R 5% T&R RES 1/8W 681R 1%FLAME PROOF T&R RES 1/4W 750R 5% T&R RES 1/4W 953R 1% T&R RES 1/4W 1K 5% T&R RES 1/4W 1K 5%MINI T&R RES 1/4W 1K5 5% T&R RES 1/4W 1K5 5%MINI T&R RES 1/4W 2K 5% T&R RES 2.0W 2K2 5% BLK RES 1/4W 2K2 5% T&R RES 1/4W 3K 5%MINI T&R RES 1/4W 3K16 1% T&R RES 1/4W 4K120 0.1% *** T&R RES 1/4W 4K7 5% .2"U T&R RES 1/4W 6K98 1%MINI MF T&R RES 1/4W 7K960 0.1% *** T&R RES 1/4W 9K760 0.1% *** T&R RES 1/4W 10K 5% T&R RES 1/4W 10K 5% .2"U T&R RES 1/4W 10K 5%MINI T&R RES 1/4W 12K 5% T&R RES 1/4W 12K 5% .2"U T&R RES 1/4W 15K 5% T&R RES 1/4W 18K 5% .2"U T&R RES 1/4W 20K0 1%MINI MF T&R RES 1/4W 27K 5% T&R RES 1/4W 27K 5% .2"U T&R RES 1/4W 33K 5%MINI T&R RES 1/4W 37K90 0.1% *** T&R RES 1/4W 43K 5% T&R RES 1/4W 47K 5% T&R RES 1/4W 60K4 1% T&R RES 1/4W 91K 5% T&R RES 1/4W 100K 5% .2"U T&R RES 1/4W 100K 5%MINI T&R RES 1/4W 133K 1%MINI T&R RES 1/4W 180K 5%MINI T&R RES 1/4W 220K 5% T&R RES 1/4W 270K 5%MINI T&R RES 1/4W 680K 5% T&R RES 1/4W 2M2 5% T&R RES 1/4W 10M 5% T&R RES 1/4W 22M 5% T&R RES _8" 4C-28AWG RIB 1 W/LCK HDR 098 _9" 5C-22AWG RIBBON CABLE 0.1" 16" 13C-24AWG RIBBON CABLE 0.1" #4 X 1/4 PAN PH TYPE A ZINC 4-40 X 5/16 PAN PH MS JS500 4-40 X 3/8 PAN PH MS JS500 6-32 X 3/8 PAN PH TAPTITE JS500 6-32 X 3/8 FLAT PH TAPTITE BO#4 HEA 8-32 X 5/16 PAN QUAD TAPTITE JS500 8-18 X 1/2 THRD CUTTING FOR PLASTIC 8-32 X 5/8 PAN PH TAPTITE JS500 1/4-20 X 2 1/2 HEX HD MS JS500 BLK 3/16 NYLON SPACER OD 1/8 X ID .063 SNAP IN .375 SPACER RICHCO 3/4 OD X 5/16 ID X .08 THICK WASHER #6 FLAT WASHER NYLON #10 INT TOOTH LOCKWASHER BO DPDT PUSH SW PCMT H BREAK B4 MAKE DPDT ROKR SW QUIK 250"AC/PWR ON-OFF SR-300 POWER TRANSFORMER T'RD

Qty. 11 7 4 2 2 4 6 4 2 2 1 1 2 4 2 4 6 3 2 2 6 4 2 2 1 2 4 1 2 4 2 2 2 2 8 2 8 3 2 2 2 2 10 3 1 2 2 2 2 2 4 2 6 2 2 2 2 2 1 2 2 2 2 1 2 4 2 2 22 14 4 7 1 18 5 2 2 4 2 1 1

+16V_BAT 33R R45L PIN 8 U1 +16V_BAT CIRCUIT WITHIN BOX IS NOT ON POWER AMP BOARD 33R R29L HEATSINK D7L 1N5402 D11L HEATSINK Q9L
2W

10R

C13L R47L +55V

10N

4N35

D16L D17L D26L R19L D2L R43L 390R AGND R30L 2K2 +0.60V MJL21193 Q6L BC560 -55V AGND +55V O/P O/P
T

B

A

6

1

C

D15L 100K R5L +55V R20L 274R R21L 33R2

5

C

2

INPUT

4

E

NC

D14L

3

U2L 120R C11L 1n MX2L 1 2 3 4 5

D13L

4V RMS

GOLD
R S

USE

C2L 33pF 0.1% 681R D1L D3L BAT85 Q2L BC550 R27L
1/8W

CONNECT TO M1085 PREAMP PCB MX1L 1 CLP1 2 CLP2 AMP-REF. 3 4 AMP-IN 750R R15L 100n C4L 150R-FP 270K R50L
5W

+.67V

R4L C9L 100p

Q8L MJE15030

1

25.4VRMS 150 WATTS @ 4R GAIN = 6

2 1 MPSA06 Q4L R25L 3K16 Q15L BC550 D5L 33K R51L
5W

8 270R R14L 0R15 R31L 16V 1N5246A D8L C6L 25V 330u L1L 5uH

3

BC560 Q1L

HEATSINK

13A/85C RT1L 10K R26L 3K16 AGND R28L
1/8W

10K R8L D30L D25L

2W

4n7 CSA A
CW

22n CSA 150R-FP C5L 100n -0.58V

HEATSINK

T2.5A

CHASSIS

BROWN 100K R6L C12L 1n2 D27L R23L 274R R24L 33R2 Q7L BC550

GRN/YEL

BLUE

390R R10L 7 4 Q10L MJ15031 R13L 6

2W

S1

TB3

TB4

GND -55V R1 -18V 63V 1u C5 R2 10K GND 2M2 D7 63V 2u2 C6 GND -21V R3 KIL 10N

TB7

5A-SB

F1

CHASSIS

U:\M1085V17.PRN
AGND R37L
1W

16V

0.1% C1L 4K12 33u R1L

3

U1L

1/2

0.1% 37K9

33078

R2L

0.1% 7K96

R3L D6L 0R15 R33L 16V 1N5246A D9L C7L 25V 100u

C8L 220n R38L 3R9 AGND 10K R42L C23L 25V 330u

10R

ENCLOSE CIRCUITRY IS OFF-PCB.

T10A Q5L MPSA56

50Hz 370VA #1248E

C3L 63V 2u2

R9L 4K7

2
R18L 6K98 HEATSINK -0.58V HEATSINK R35L 2K2 1N5402 D12L

T10A 33078
1/2

12K R11L BAT85 390R 5 U1L

Q3L MPSA56

D4L

230V A.C 50HZ LINE

EXPORT VERSION

-0.85V 20K R12L

Q11L MJL21194 68R R36L

D10L

ENCLOSE CIRCUITRY IS OFF-PCB. +55V

GND

D1

13A/85C BR1 C3 4700u 63V 10R C10L R46L 33R R44L

TB1

TB2

TB5

T1

10A-SB

PX6A02 D2

-55V -16V_BAT

TB6

F2

60Hz 370VA GND C4 4700u 63V

GND

PX6A02 PX6A02

4n7 CSA C1

22n CSA C2

#1248

D3 PX6A02

MJL21194 MJL21193

MJE15031 MJE15030

MJF6668 MJF6388

NOTES: 1. ADJUST R9 ACCROSS TP1&TP2 FOR 4.5 mV BIAS 2. Q3 IS THERMALLY COUPLED TO HEAT SINK BCE BCE B CE 2N5638 BC550C BC560C MPSA06 MPSA56 3.

EY1

F3 10A-SB

D4 IN4004

N.A. VERSION

D5 IN4004

BLACK

WHITE

GREEN 120V A.C 60HZ LINE

D6

2K2 5251B 22VZ ZD1

TP

TEST POINT

M1085PA.SCH_DATABASE_HISTORY
V N

4. Reference with a "L" suffix will have a "R" suffix for the right channel amplifier. DSG CBE EBC 5. ALL UNMARKED DIODES IN4148

MODEL(S):# DATE

SR-300 VER# DESCRIPTION OF CHANGE

DATE: SEP/30/2002 YORKVILLE NAME: M1085AMP.SCH

MODELS: PCB#&VER:

SR-300 M1085

SCH ISSUE:

1.70 TITLE: AMPLIFIER_150W

1 2 3 4 5 6 7 8 9 10

JUL/12/95 . NOV/24/95 DEC/08/95 MAR/30/99 APR/27/99 . OCT/08/99 SEP/30/02 D

1.10 . 1.20 1.30 1.40 1.50 . 1.60 1.70 V

PC#4850/4851 REMOVE R7L, C13L ADD D26L D27L, R43L. R19L FROM 510R TO 120R . ADDED O/P JACKS CORRECTED I/P WIRES PC#4971 ADDED BATTERY BYPASS CIRCUIT R11L_15K->12K PC#5890_RT1L_100K->10K_ADD_R50L, R51L,Q15L,D30L HEATSINK_SYMBOL_ADDED CORRECTION_R27L/R28L->1/8W-FLM-PRF N

11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

R18A 91K 82n H.P.F U6 1 R22A 4 I/P"A" TO INPUT OF AMPLIFIER Q3A 2N5638 R39 KIL (TO AMP "A") GND Q4A BC560 R35A 1K5 +15V D5A 27K R33A Q2A BC560 R32A 1K 4.5V 12K R34A GND BC560
1 2 3
1/2

TLO72 CLP1"A" CLP2"A" GND 3 953R 3 R19A 43K 2 133K1% R21A 60K4_1% +15V 3K GND R26A 16V 180K 2 1 3 U7
1/2

1 R23A GND 2

NOTE: IF EITHER INPUT JACK IS CONNECTED UNIT WILL WORK IN MONO
47n C6A C8A
3 IN 2 OUT 1

COMPONENTS INSIDE THE DOTTED LINE ARE LOCATED ON THE FRONT PCB WHICH IS CONNECTED TO THE REAR PCB WITH A RIBBON CABLE
10M R17A SW1 R20A 91K R25A 2 1 R10A
1/2

GOLD TIP&RING JACK GND D6A D1A 20K0 R27A 10K D3A 1 3 U5
1/2

R1A 220n C7A 220n C9A

R3A

R5A

GND

953R

9K760 C1A

9K760

1n

2 C11A 33u R28A 10K C12A 16V 10u R29A

1

JB1A 1 2 20KO

3

5

GND R7A GND 10K 16V 2 1 25A
CW 1/2

C2A

3

U1

1/2

CLP LD4A R24A 20K0 R12A 27K TLO72 GND GND R13A 18K GND GND 3 GND GND R16A D2A R18B 91K 82n
GRN D

BAL. 3 U4 5532 D4A TLO72 680K 100K R11A 220K
GRN

S

R

T

INPUT 2

4

6

953R

1n 9K760

TLO72 R6A

RED

1N5240BRL 10V C22A 470p R8A

R2A 10u C3A 3 U2 1K C5A 10p TLO72 8 POWER ON LD1 R10 +15V 1K5
GREEN PIN 11

R4A SIGNAL LD2A

9K760

CHANNEL "A" R9A

GND

HEATSINK

+15V

R4 P1A 10K 7 5

1W

PIN 1

C9 D6B U3 -13V 20K0 1

-15V GND +15V GND
IABC

LM13600 1/2 4 R15A 22M

SW2

OUT

IN

R5 25A
CW 1/2

MJF6668

4

5

6

GND

LD3A LIMITER GND
PIN 11

13 16 D2B KIL (TO AMP "A"&"B") R16B 20K0

OUT

IN

LIMITER

IABC

SW2

U:\SR300IP2.PRN
R37A C13A 100u 25V 10K R36A 4K7 Q5A LIMITER -15V R38A 1K 1 2 TLO72
1/2

STEREO/ MONO 2

15K R6

C7

Q1

100n

MJF6388

PIN 1

100R +55V R14A 100R 33U C10A 16V

GND

R8 470R

GND

16V 500mW ZD2 16V 500mW ZD3 10K R7B R9B 1K H.P.F C8B
6 IN 5 OUT 4

100n C10

100n SIGNAL LD2B 5 R19B 43K GND GND R20B 91K R25B 7 R10B -15V 100K 5532 R11B 220K R13B 10 12 18K 9 C5B 10p GND 14
D 1/2

GND

CLP1"B" GND R23B U6 7 953R CLP2"B" 3 4 GND I/P"B"

1.4VRMS FOR FULL OUTPUT POWER 680K 16V 7 5 U2 GND SW1 TLO72 GND D1B 220n C7B 220n C9B Q3 BC560 10M R17B P1B 10K 6 47n C6B 10u C3B

C8

15K R7

100n

R9 470R HEATSINK

1N5240BRL 10V C22B 470p R8B

Q2

-55V

6 R21B 60K4_1%

R22B 133K1%

Q3B 2N5638 GND KIL (TO AMP "B") +15V Q4B BC560 R26B 16V 20K0 R27B

R39B 3K

TO INPUT OF AMPLIFIER

1W

100R

R1B -15V R11 470R 6 5 U4 R12B 27K R24B 20K0

R3B

R5B

-15V

GND -15V

953R

JB1B 1

3

5

9K760 C1B

9K760

+15V C11 22u 50V

6

7

BAL.

S

R

T

GND

1n C2B

5

C11B 33u R28B 6 5 20K0 7 U5
1/2

C12B 16V 10u R29B D3B 10K GND TLO72 GND Q2B BC560 R32B 1K GND 12K R34B GND D4B 6 5 180K 7 U7
1/2

R35B 1K5 10K +15V

U1

INPUT 2 R40B 47K R31B 100K R30B 2K
YEL YEL

4 R40A 47K R31A 100K R30A 2K BC550 Q1A BC550 Q1B

6

1/2

CHANNEL "B"

953R

1n 9K760

TLO72 R6B

R2B

R4B

9K760

TLO72

27K D5BR33B 4.5V R37B

GOLD TIP&RING JACK ALL UNMARKED DIODES ARE IN4148

GND

+15V

C12

C14

C16

C18

C20

C21

100n LD3B

100n

100n

100n

100n

100n

CLP LD4B

C13

C15

C17

C19

-15V

RED

C13B 100u 25V 15 R15B 22M R14B 100R 33U C10B 16V GND LIMITER -15V R38B 1K GND

10K R36B 4K7 Q5B BC560

100n

100n

100n

100n

GND

LM13600 1/2 -13V U3

M1085.SCH_DATABASE_HISTORY
V N

DATE: OCT/08/99 YORKVILLE NAME: M1085.SCH

MODELS: PCB#&VER:

SR-300 M1085

DWG_1_OF_2

SCH ISSUE: TITLE: INPUT/PREAMP

MODEL(S):# DATE

SR-300 VER# DESCRIPTION OF CHANGEPWR REDREW OUTPUTS TO MATCH

1.40

AMP SCHEM.

MJF6388 MJF6668

BC550C BC560C

2N5638

STYLE "P22"
BCE

1 2 3 4 5 6 7 8 9 10

NOV/24/95 MAR/31/99 OCT/08/99 D D D D D D D

1.20 1.30 1.40 V V V V V V V

. UPDATE_POTS HEATSINK_SYMBOL_ADDED N N N N N N N

11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

CBE

DGS

RIBBON CABLE TO MXRA

JB1B

#3574

O/P #3593 V+

MX3A O/P"A"

O/P"B" MX3B #3574

#3593

JB1A

#3528

#3528

SW1

1+
#3498
R17A #3436 #3436 J11 R8
J1 J2 J3 J4 J5 J6 R9

1#3498

O/P

SR-300 M1085 VER:8.00

V+

#3574 11 RIBBON CABLE TO MX3B

1

R17B

C8A HIGH-PASS-FILTER

#3574

1

470R 15K R6 100n C7

10M

JB2A 1W 100R
C6 C5 J13

C1L

10M

4N35

D16L

4148

C1B C2B

4148

C9A

C8B

D14L 4K12/0.1% R1L

4K12/0.1%

9K760 9K760 9K760

9K760

TLO72

R4B R3B

U1

91K 91K C7A 220n

63V 4700u

D13L 100K R5L R15L 750R

C2R

#5869

R22A

D15L 4148 4148

C6A

16V 33u C6B

C7B

C2L 33p

9K760

R5B

33p

D1L D2L

4148 4148

R3A R6A

R22B

R20B

C10A

R15A

U1R

U6 Q2A

BC560

R45L 33R

R10L

R1

YEL._C-TAP

R11A

1

R16A
R25A R27A

2K2

33R

R5A

MC33078
C11L

133K1%

TLO72

TP3L

MC33078
XFMR

D13R D15R

U1L

C13

4148

R47L 10R

C3L

R11L 63V 2u2

J18 J17

CTRL-PCB. C17

Q3L

1n 120R

180K

100K

D2A

R28A

D2

C13L R46L 10n R44L C6L Q2L BC550 330u 25V BC560

R21A

Q1R

390R 4148

Q2R

D5A

J19

12K

100n C20

U5

Q1L

100n

J34

BIAS
R19L

J25 C11B 100n C19

C11A C18

#6434

#6434

T10A #3414 SEC2._FUSE 10ASB RED_SEC2

D7L

1N2 100n C4R MPSA06

100n C4L 1N2

953R 953R

Q4L

R29L B TP1L Q8L E MJE15030 #6896

U7

R13L 390R

MPSA06

10R 33R

R23A R23B R28B

18K C10B

XFMR

R35A

1K5

C12L

12K R34B

20K0 20K0

20K0 10K

4148

27K

RT V

MX2A

RT V

J4L

R38A

C10L 10n

#3683 R39B

4148

F3

XFMR

R24B R25B D3B R26B R27B J28 J27

BC560

MJL21193

BC560

Q4B

R37A 10K R36A 4K7

#6991

D5L

TB5

BLK_PRI

BLK_PRI TB1

WHT_PRI

WHT_PRI TB4

R39A

#5989

TB2

XFMR

WIRE

XFMR

I/P"A"

BC560

2N5638

TB3

16V

REPPOC .zo 2 ESU

R20L R21L BC560 R50L

274R 33R2 Q6L

2W 2K2 R30L J5L RT1L 10K

R35B

MX2B 2N5638

LINE-CORD

Q5A

RIBBON MARK

R30R

#5989

F2

1

R31L D8L

100u 25V

#6991

4K7 R36B

Q9L

Q5B

GND
1

Q3B

Q9R

CLP1"A" GND 3K

CLP1"B"

MJL21193

#3683

0R15 5W

3K

1K

Q2B

CLP2"A"

D8R

1K5

Q3A

I/P"B"

2K2 2W J20R 10K

16VR31R

D5R

CLP2"B"

5W 0R15

4148

10n

Q4A

RED_SEC1

C10R

100u 25V

680N 250VAC

TB7

BC560

R38B

R32B

TP1R

3K16 R25L

R15B R37B 10K BC560 C13B

1K 1K

150R R27L

C13A

22M

C12B

4148 D5B

SEE NOTE 5

SEE

5

R27R

150R

3K16

R44R R25R

LED NEW #3747 SPACER FOR C2 Q10L/R Q8L/R #8607 SPACER B C E P22 POT 3511 WASHER 8870 SCREW

D27L

C5B

D2B

4148

#6434

C2

C12R

J3L

16V 33u

10p

20K0

R16B

33u 16V

16V 10u

10K R33B R29B

#3655

R13B

T10A #3414 SEC1._FUSE 10ASB

180K

BAR DOWN

C1 CSA 4N7

220K 100R

R11B R14B

33R

D6

B

D4

PX6A02

J6R

Q8R

J24R J5R

33R 10R

4148

#6434

R46R

J35

#6896

4148 4148

D4B

100K

R10B

25V 330u

IN4004

PX6A02

MJE15030

27K

D1

E

D1B

4148

R12B U3

Q4R C6R

J26

20K0

#3603

BAT85

U4

100n

TLO72

TLO72

IN4004

R11R

R14L R12L

R43L

270R
D3L

J20 J21

5532

LM13600

D5
BAR DOWN

4K7

R9R

270R

R14R

BAT85
D3R

20K0

R12R

10n

C16

C13R

27K

12K BC560

BC550

D4A

A56 D26R

100n

4148 D1A

18K
R13A

4148
D3A

R34A 4148

R6L

R9L 4K7

4148

100K

220K 10p

C5A R12A

R33A 100n C21 27K 12K 60K4_1% J24

C4
D3
BAR DOWN

TB6

390R

10K R8L

C3
BAR DOWN

390R

2u2 63V

R10A

4148 Q3R J7R R8R R43R 390R 10K R29R 33R 120R R19R 4148 D7R 1n C11R D27R 4148 R13R 390R

R14A 100R

20K0 20K0 20K0 10K 20K0

J1L J2L

R26A R24A

60K4_1%

R21B C12A

C3R TP3R

J2R J1R 750R

100n

100K R5R

133K1%

4148

GREEN

RTV RT V

4148 4148

J15 J16

R45R

10K 2M2

#5869 63V 4700u

J14

R32A

47n

47n

43K 43K

R19B ZD1 R19A R2 R3 D7

22V

RT V

RT RTV V

RT V

R15R

TLP62_ I/P"L" SGND CLP1L CLP2L

220n 220n C9B 91K 91K

D14R

4N35 R2L

4148

33u 16V 9K760 9K760

R18A R20A

R18B

SW2

220n

82n

82n

ZD2

37K90 R3L 7K96 R4L 681R C9L 100p

1K

ZD3

2u2 63V

1u 63V

1n 1n 9K760 R6B C12 100n

33u 16V
R1R

U2AR

R2B

J12

U2LA

U2L

D17L

1

1

953R

953R 1n C1A 1n C2A
R4A

JB2B

R2A

R1B

LIMITER

953R 953R

470R R7 15K 100n C8

1W 100R

J7

R1A

+45V GND -45V

J8

16V

16V

100n

100n

C9 C10

MX1

J23

R10R

16V 33u

R6R 100K

R47R

10R

16V 10u

10K R29A

22M

D10L

2K 47K

4148

4148

2K2 2W R35L

MJL21194

MJL21194

#6988

#6988

16V 10u

LD3A LIM.(YEL) P1A

#3603
R8B

CTRL-PCB.
J29 J30

D10R

6K98

R18L

MX1.

BC550

4148

#3655

R30B R40B

R42L D25LR24L

C5L

R33L 25V 100u

C5R

TLO72

R42R D25R R24R

C3A

33R2

100u 25V

C7L

274R

33R2

BAT85 D4L Q10L

J33

MJE15031

#6897

U2

4148

680K 470p

4148

10K

10K

R40A 47K

BC550

R11 470R

R36L

B

E

25A 50V 22u 1K5
R10

25V 330u

J32

C23L D6L

330u 25V

C14 100n J31

10V

D9L

16V

LD2A

#6897

16V 10u

MJE15031

100n

D4R BAT85

LD1

Q10R

100n

274R

D6B

B

LD2B

16V

D9R

25A 68R

Q5R

A56

Q5L

A56 68R

R36R

R26R

4148 R26L R38L

R28L 150R 3K16
IN5402

C11

R9A

D6A R8A C22A

Q1A

1K

C23R D6R

R28R 150R 3K16
IN5402

4148 D12R

C7R

CLIP(RED) Q3 BC560 LD4A SIG.(GRN)

C22B

Q11L

680K

PWR_ON(GRN) R31A 100K

CHANNEL"A" 10K #4390

100n C15 LD4B CLIP(RED) SIG.(GRN)

CHANNEL"B" 10K #4390

R23L

Q11R

E

2-OZ COPPER

470P

TP2L

R30A 2K

10V

TP2R

R23R

R33R

2W 3R9

C8L

R37L

R37R

RT 5uH V
RTV

5uH RT

RTV

V

PWR._SUP.&O/P(#3538) VAGND V+ O/PL O/PL

PWR._SUP.&O/P(#3538) O/P_R O/P_R V+ AGND VMX1R

RIGHT CHANNEL M1085-6.00

220n L1L

10R 1W

MX1L

VCD

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

JUL/07/95 . OCT/23/95 NOV/20/95 . APR/22/96 . AUG/22/96 MAR/19/97 . AUG/14/97 JAN/26/99 FEB/24/99 . MAR/30/99 MAR/02/00 JUL/03/02 D

2.00 . 2.10 2.20 . 3.00 . 3.00 4.00 . 5.00 6.00 . . . 7.00 8.00 V

PC#4850/4851 DELETE R7L/R,C13L/R. ADD D26L/R, D27L/R, R43L/R. R19L/R 510R-->120R PC#4919 RETAPE TO ACCEPT 470N AC CAP PT#5243 FOR EMC UNITS PC#4951 D14L, D16L D17L Q1L AND Q2L MOVED FOR RADIAL INSERTION PC#4952 PC#4971 ADD BATTERY BYPASS CIRCUIT PC#5103 MOVE THERMISTOR MACPIN_UPDATED OUTPUT_TERMINALS_REPLACED_ C15_RADIAL->AXIAL SPACE_ADDED_FOR_680N_CAP_C15->RADIA PC#5908_ADD_TLP621_(U2RA_U2LA) PC#5890_100K_THERMISTOR->10K_ADDED_ Q15L/R,R50L/R,R51,R/L_D30L/R R11R/L_15K->12K_PC#5982 SHEAR HERE AFTER PC#6211_FIX_ERROR_Q6R->Q15R PC#6227_MOVE_D16L,D17L,D14L N

1W 10R

C8R

220n L1R

#3819

#3819

2W 3R9

IN5402

D11R

IN5402

R38R

P:\1085V80.PRN

ASSEMBLY PCB MECH

M1085-8.00 M1085-8.00
O/P LINE_IN LINE_IN

00.8-5801M

HCEM BCP

"006.01 X "570.31=EZIS KNALB BLANK SIZE=13.075" X 10.600"

RED
MJF6388 MJF6668

BLK
OUTPUT"B" O/P

ENGINEERING NOTES NOTE 1 NOTE 2
ADD HEATSHRINK TUBING TO R22L/R BEFORE WAVE SOLDERING HEATSHRINK TUBING MUST NOT EXTEND ABOVE THE THERMISTOR R22L/R

FUNCTION
E OUTPUT"A"

B

+15V

E

B

Q1

-15V

Q2

SEE NOTE

GND V-

R4

SEE NOTE
C1R D16R 4148 4148 4148
D17R

GND V-

U2R

TLP62_

R5

R2R

37K90 7K96 681R 100p
R3R R4R C9R

I/P"R" SGND

CLP1R

NOTE 3

CLP2R

TRANSISTOR MOUNTING DETAIL Q3L/R

2-OZ COPPER

4148 D1R D2R 4148

#8607 SPACER

A56

BIAS

PX6A02

PX6A02

NOTE 3A

EBC USE ONLY PART #6780 FOR Q3L/R NO SUBSTITUTION ALLOWED

NOTE 4

RIBBON MARK

33R2 274R BC560

R21R R20R

NOTE 5

RT1R

Q6R

270K R51L 33K BC550 Q15L BC550 Q7L

D30L

00.8-5801M

R31B

100K

1.

Q1B

D30R

4148

6K98 2W 2K2

Q15R BC550 33K R51R 270K R50R R18R
Q7R

USE PART#5266 680N FOR EMC UNITS USE PART#6435 22N FOR N.A. UNITS

LIM.(YEL) LD3B R9B R7A

BC550
R35R

C3B

P1B

NOTE 6
Q11L/R Q9L/R

2-OZ COPPER

5W 0R15

1K
10K R7B 10K

0R15 5W

D12L D11L

M1085.PCB_DATABASE_HISTORY
MODEL(S):- SR-300 # DATE VER# DESCRIPTION OF CHANGE

#8607 SPACER B C E

00.8-5801M

00.8-5801M

LEFT CHANNEL M1085-6.00

STYLE PCB "P22"

BOARD TEST

00.8-5801M EDISREDLOS

NOTE 7
STUFF 4N35 U2R, U2L OR U2RA, U2LA (TLP621) NOT BOTH

L

N

GR N / YEL L

19 1/2" WHITE

WH I T E D BL / I N S 1 4 " BL A C K D BL / I N S

1248E

T

T

WH I T E D BL / I N S

BLACK D BL/ IN S

BL AC K D BL/IN S
1 7 " WH I T E D BL / I N S

4 1/2" BLACK

SR -30 0E A C W IRI NG VE RSIO N 1. 30 FEB 02, 99