User manual YORKVILLE EP378 SERVICE MANUAL

[. . . ] Yorkville SERVICE MANUAL 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 EP378 PROFESSIONAL BALANCED SOUND PROCESSING SYSTEM Quality and Innovation Since 1963 Printed in Canada Manual-Service-ep378 Oct20/2000 IMPORTANT SAFETY INSTRUCTIONS YS No. 5990 5991 6438 6825 6822 5106 6774 6926 6840 6882 6889 5417 5413 5425 5205 5226 5228 5229 5231 5233 5234 5267 5630 4518 3489 3602 3682 3498 3414 2435 3827 8661 8706 3461 3826 5989 8800 4599 5299 4973 4896 4637 4811 4852 4855 4873 4823 4802 4808 4847 6124 4774 4639 6128 4870 4801 4810 4762 6116 4856 4901 4830 4784 4885 4832 4902 4890 4941 4840 4895 4835 4760 4838 6120 4844 3616 9005 9020 9640 8801 EP378 Parts List 9/30/98 Description GREEN 3MM LED 1V7 20MA RAD W/STOPER RED 3MM LED 1V9 20MA RAD W/STOPER 1N4004 400V 1A0 DIODE T&R 1N4148 75V 0A45 DIODE T&R 1N4745A 16V0 1W0 ZENER 5% T&R MPSA63 TO92 PNP DARLINGTONT&R BD139 TO126 NPN TRANS BD140 TO126 PNP TRANS. [. . . ] 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. 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. 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. [. . . ] 10K CW D A P1A U:\M560 1. PRN 22K 10K0 R12A TLO72 1/2 R32A 4K99 6K98 R13A 7 5 6 9K1 R14A 6K2 R15A TLO72 1/2 HIGH PASS 3 R28A 4K99 2 1 3 U2A 1/2 1K21/1% IG JB1A 1 CH1 S 9K76/0. 1% R3A 390p 2 9K76/0. 1% R5A 1 3 U1A 1/2 GND 4K990 R9A 5 15N C3A 6 U1A U2A PLAY_BACK/VOICE IN OUT 7 2 1 15N C6A R27A 1N8 C8A 100K R22A -V RED 24K R30A 6 7 5 1 75K R24A GND U4A 1/2 680R R37A 10K0 10K0 R34A 2 3 R35A 1 U4A 1/2 HORN CH1_OUTPUT 6 T 330R 15n C17A R38A 100R R39A 330R R40A 68R R41A 68R R42A 680R R43A IG 4 R 2 S R1A 17K40_0. 1% R11A 15N C4A 4K990 R10A S2 33K R7A 13K R20A GND TLO72 51K R31A 6K98 R21A R18A GND 1N8 C10A 2 3 U3A 1/2 3 R 5 T C1A 390p R2A 1K21/1% IG C2A R4A 9K76/0. 1% TLO72 10K0 R33A GND 5 3 1 JB2A TLO72 10K0 R36A TLO72 R6A 9K76/0. 1% 33078 INPUT 2 4 6 GND BAND-PASS CENTERED AT 2KHZ GND LD2A GND 1K GND CLIP CIRCUIT IG GND GND 4148 D7A 100K R16A 15K 390p C16A C12A 330P 100K 6 7 56K R26A 5 U8A 1/2 **NOTE** ONLY CHAN A IS SHOWN CHAN B IS IDENTICAL ACCEPT OP-AMP PINS REVERSED. MPSA63 Q1A 4148 D3A GND 3. 5K AND 16K NOTCHES 390p C9A GND TLO72 R17A D4A 4148 R25A 51K C11A 330P 6K2 R29A 6 5 R23A 7 U3A 1/2 GND 680R R71A 10K0 10K0 2 3 R66A 1 10K0 U8A 1/2 33078 100N C41A LOW PASS 2K R45A 3K R46A 3 2 TLO72 1/2 100N C43A 3K R49A 3K TLO74 1/4 330R 15n C58A R67A 100R R68A 68R R74A 6 T 4 R 2 MID/FULL_RANGE S GND TLO74 1/4 GND R65A CH1_OUTPUT LOW PASS 2K 1 R47A 3K R48A 5 TLO72 1/2 3 IN 2 OUT 1 220N C45A HIGH PASS 150N C46A 220N 1 C47A 150N C48A 3 2 R52A HIGH PASS 5 3 1 JB3A R64A 7 TLO72 IG 10K0 R69A 390p C60A GND 330R R70A 68R R73A 680R R72A IG U6A U5A U5A S1 7 FULL_RANGE/BI_AMP 5 20K R51A 6 U6A GND SUB_IN GND 3 IN 2 OUT 1 S3A 680R 10K 220N 14 C49A 330N C50A 24K R54A R53A TLO74 1/4 U6A FULL_RANGE 8 R84A 2K 10K0 HP WITH 6dB BOOST AT 35Hz R93A 10K0 10K0 R94A 2 C35A 470N (4=V-, 8V+) R98A 330R 15n 7 5 U11A 1/2 SUBWOOFER CH1_OUTPUT 6 T 10 9 U6A 4 R 2 S 6 R97A R99A 100R R100A 68R R101A C39A 5 3 1 JB4A IG LOW PASS C21A 330N R78A R79A 2 3 (4=V-, 8V+) GND HIGH PASS WITH LOW Q AT LOW CUT-OFF C33A 330N LOW PASS R81A R82A 12K 6 5 (4=V-, 8V+) TLO72 10K0 330R R96A 68R R102A 680R R103A IG GND 1 3 U10A 1/2 TLO72 GND 390p C40A 30K R85A GND R95A 1 U9A 7 U9A 1/2 TLO72 1W 1R R6 C5 25V 100uF C34A 470N VARIABLE LOWPASS FILTER 1M R80A C20A 68N VARIABLE LOWPASS FILTER 1M R83A C32A 68N +15V GND +V 0. 1A D1 1N4004 A 2 XF1 15R R2 2K2 R3 C1 25V 100uF 16V 1W ZD1 16V 1W ZD2 C3 25V 330U GND C2 25V 100uF R5 2K2 R4 15R C4 25V 330U Q1 BD139 +15V GND GND BYPASS CAPS ARE CONNECTED ACROSS I. C SUPPLIES. 1A TL072 U9B C27B D5B C33B (4=V-, 8V+) 100n 330N 4K12 R81B R82B BOTA WIPB 330N C34B 1M R83B R7 1R 1WATT 1WATT 1R R6 C32B 470N 12K BOTB TOPB 470N R84B #4518 C39B C35B 68N 2K R93B C5 100uF 25V C6 100uF 25V 30K ZD1 ZD2 10K/STEREO R85B U11B C40B 15n METAL METAL TOPA 16V J1B R100B 16V 390P 10K0 TL072 680R R103B R94B 10K0 10K0R97B 680RR98B 330RR99B 100R 68R 68R R101B R102B Q2 C2 100uF 25V 330U 25V Q1 BD139 330R R96B BD140 10K0 R95B C4 R4 330U 25V 100uF C1 25V C3 R3 2K2 15R R2 1N4004 D3 D4 1N4004 R5 2K2 15R J8 J9 D1 D2 5 XF1 CUT J10 FOR N. A. TAB2 NEUTRAL/WHITE J12 TAB1 CE-T0. 1A/230Vac CSA-0. 1ASB/120Vac F1 J11 J10 6 7 8 1N4004 1N4004 120VAC GUIDE ETCH ASSEMBLY PCB MECH LINE/BLACK 60HZ XXVA 1 2 3 4 M560-1. 00 M560-1. 00 SHEAR 00. 1-065M EDISREDLOS [. . . ]