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SERVICE MANUAL
MODEL TYPE: YS1055
NX720S
WEB ACCESS: http://www.yorkville.com
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
Quality and Innovation Since 1963
Printed in Canada
Manual-Service-nx720s-00-1v1.pdf
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Summary of Contents for YORKVILLE YS1055
- Page 1 SERVICE MANUAL MODEL TYPE: YS1055 NX720S WEB ACCESS: http://www.yorkville.com 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...
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Page 2: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS This lightning flash with arrowhead symbol, within The exclamation point within an equilatereal triangle is an equilateral triangle, is intended to alert the user to intended to alert the user to the presence of important the presence of uninsulated “dangerous voltage” operating and maintenance (servicing) instructions in within the product’s enclosure that may be of sufficient the literature accompanying the appliance. - Page 3 Part# Description Labeled Components 7471 15" 8R 1000WPRGM 3"V.C. NEO SPE Z905* NX720S GRILL 8240D LOGO YORKVILLE SMALL BLUE ADAPTOR,SPEAKER STAND,METAL,BLA 8483 8565 BAR HANDLE ALL METAL RECTANGULA 8545 RECESSED RUBBER BUMPER WITH WAS 9916 KNOB 0-DEG GRY SOFT GRAY...
- Page 4 D E S I G N E D & M A N U FA C T U R E D B Y Y O R K V I L L E S O U N D MODEL TYPE:YS1055 FAST DETECT...
- Page 5 TO92 NPN DARL T&R TA 3426 8' 3/16 SJT AC LINE CORD REMOVB-CSA 6132 1/4W 8M2 5%MINI T&R RES 5107 2N5551 TO92 NPN TRAN T&R TA 8240D LOGO YORKVILLE SMALL BLUE DOMED 4751 1/4W 22M T&R RES 5108 2N5401 TO92 PNP TRAN T&R TA 3792 _288UH CHOKE 89T20AWG/77091MAGNTKS 3710 17.0"...
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Page 6: Power Supply
Link Level 1/4W 1/4W 470R P1:A 3453 4434 R116 C124 Mono Blend Input MINI +15VIP +15VIP 1.0W +15VIP R165 9K76 1.0W 0.5% 1/4W SIGNAL TO 9K76 R123 0.5% R146 3925 AMP INPUT 113K R115 R124 NE5532N Link 330N TL072 TL072 Rolloff TL072 Rolloff... - Page 7 M1330.PCB_DATABASE_HISTORY MODEL(S):- NX700S +15V +15V DATE VER# DESCRIPTION OF CHANGE R210 +22V 1/4W MAY 2006 1.00 MADE FROM NX750P M1231 V2.00 IN MAY 2006 M1231 HAD BEEN FULLY FORCE UPDATED ON MAY 2005 FUSIBLE MAY 2006 FORCE UPDATED ALL COMPONENTS MODIFIED R258 R211 4148...
- Page 8 C106 C102 C132 C120 MPSA13 XFMR BLK C138 4148 100N 100N 470K 5266 R113 R120 100K R117 250V R136 680N AC BLK 180N 4148 100K 18V0 250V 6492 100N 6451 GROUND 250V 18V0 1300UH 4148 C112 XFMR BLK 5242 R103 R138 GRN/YEL TL072...
- Page 9 SEE LAYOUT DIAGRAM M1330.PCB_DATABASE_HISTORY PRODUCTION NOTES MODEL(S):- NX720S DATE VER# DESCRIPTION OF CHANGE MAY 2006 1.00 MADE FROM NX750P M1231 V2.00 IN MAY 2006 1. NOTE THAT THIER IS SEVERAL LINES ON THE DSBOTMASK LAYER. 6. NUTS (8800) ON TOP AND SCREWS (8835) ON BOTTOM M1231 HAD BEEN FULLY FORCE UPDATED ON MAY 2005 THESE MAY BE USED FOR MARCONI TEST POINTS SO HAVE THIS LAYER NUTS HAVE TO BE RETORQUED AND LOCTITE...
- Page 10 C106 C102 C132 C120 MPSA13 XFMR BLK C138 4148 100N 100N 470K R113 R120 100K R117 250V R136 680N AC BLK 180N 4148 100K 18V0 250V 100N GROUND 250V 18V0 1300UH 4148 C112 XFMR BLK R103 R138 GRN/YEL TL072 AC WHT M1330 PSGND NE5532N...
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Page 11: Input Select
P OWE R LI M I T C L I P NX720S LEVEL BOOST ROLLOFF FREQUENCY INPUT SELECT LINE SPKR INP U T A I NP U T A IN PUT B TH RU A T H RU A T HRU B PR02 A-Z552 / 1v1 YS#9916 Gray Knob (qty: 1) - Page 12 CH1337E 230V Function Function Function TO220 TO220 T221D Function Function NX720S CE...