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SERVICE MANUAL
K4
MODEL TYPE: YS1045
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-K4-00-1v6 • August 20, 2015
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Summary of Contents for YORKVILLE K4 YS1045
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Page 1: Service Manual
SERVICE MANUAL MODEL TYPE: YS1045 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... -
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 TYPE: YS1045 A-Z745R / 1v2 230V Gain 120VAC 50Hz 60Hz 3.2A 1,8A Yorkville Ground Lift Keyboard Amplifier Left Balanced Right Phones Line Out Footswitch DESIGNED & MANUFACTURED BY Ch 1 Lead YORKVILLE SOUND • TORONTO, CANADA IN MEMORY OF NEWTON GARWOOD...
- Page 4 Specifications Type Keyboard Amplifer Cabinet Program Power (Watts) Speaker Configuration - LF (Size / Power) 12-inch/200-watts Speaker Configuration - HF (Size / Power) 2x 4.75-inch/20-watts • 2x 5-inch/30-watts Frequency Response (Hz +/-3dB) 20 - 20k Input Channels Channel 1 - inputs 2 Stereo pairs of 1/4-inch TRS Channel 1 - controls Gain, 3 band EQ, 5 position voicing, Lead/OD Trim...
- Page 5 K4 Parts List 8/20/2015 YS # Description Qty. YS # Description Qty. YS # Description Qty. YS # Description Qty. 2006 1W00 1R 5%FLAME PROOF T&R RES 4808 W250 2K T&R RES 5299 24AWG SOLID SC WIR RAD JMP 8770 1/4-20X1X5/16 TRUSS PH MS JS500 2011 W250 11R3 1%FLAME PROOF T&R RES...
- Page 6 MODEL TYPE: YS1045 Keymaster K4 Block Diagram for 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 Tube Gain Trim L Lead Gain L Tube/Solid State...
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Page 7: Service Bulletin
Voice: (905) 837-8481 Fax: (716) 297-3689 Fax: (905) 837-8746 w w w . y o r k v i l l e . c o m Yorkville Sound Inc. Yorkville Sound 4625 Witmer Industrial Estate 550 Granite Court Niagara Falls, New York... - Page 8 Voice: (905) 837-8481 Fax: (716) 297-3689 Fax: (905) 837-8746 w w w . y o r k v i l l e . c o m Yorkville Sound Inc. Yorkville Sound 4625 Witmer Industrial Estate 550 Granite Court Niagara Falls, New York...
- Page 9 Yorkville has taken great care by using dampening foam inside to help reduce a great deal of rattling. Special foam and rubber washers are also used for mounting the chassis to the cabinet.
- Page 10 K4 FINISHING Wiring Diagram 24-inch White R T V YELLOW 100V BLACK WHITE WHITE BROWN ORANGE 100V 5933 R T V 15-inch Orange #7286 #7286 Facing Front #7388 WOOFER #7405 #7405 Bottom FINISHING-K4-speaker-wiring-00-1v1.pdf...
- Page 11 (VCC) (VCC) LM13600N LM13600N U3:C U3:D 4.75" 6745 6745 Dual VCA Dual VCA 8r 30WPGM 10K0 CUT OUT R10 , R12 10K0 MC33079P 1/4W UNTIL 2 TO 4 mV 10K0 IS ACROSS TP1 AND .2in .2in MC33079P U7:D HORN TP2 WITH AMP COLD 100V 100V TIP142...
- Page 12 BEAD 100P 100V 4148 R191 1/4W 100K 1/4W 1/4W 10K0 R192 10K0 R186 R187 R189 1/4W 1/4W 1/4W 1/4W 1/4W BC550C R193 R100 220K 470R 20K0 BEAD 1/4W MINI 470N R194 NE5532N R188 10K0 R172 1/4W BC560C 470R NE5532N 5101 R190 TO92 U6:A...
- Page 13 WARNING: 120 VDC IS BETWEEN C55 TO GROUND.THIS PRESENT A SIGNIFICANT SCHOCK HAZARD. PLEASE, USE EXTREME CAUTION WHEN SERVICING! MC7815CT R127 1.0W R126 FLMP 1N5251BRL 6872 FLMP 22V0 1.0W .2in R128 R129 LOW-FREQ--AMP[D8] 1/4W MC7815CT L&R-AMP[H5] 3 W7:A R130 6872 4148 6871 MC7915CT...
- Page 14 BROWN---RIGHT -MID BLUE------LEFT -MID RED--------WOOFER BLACK----GND INTO WAVE Pcb Mech M1238V05 Top Assy M1238V05 BlankSize - 16475x9900 4032 3538 3538 R T V R T V RIGHT LEFT SUB-OUT 3498 3498 3498 R175 M1238 4K99 R160 R167 3903 R166 R174 3903 4K99 R178...
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Page 15: Pin Configuration
SEE LAYOUT DIAGRAM PIN CONFIGURATION BD139 2N5401 BD237 2N5551 BD238 M1238_.PCB_DATABASE_HISTORY MPSA06 MJE340 TLO72 MC33078P M1238 MPSA13 MODEL(S):- MJE350 MPSA42 MODEL(S):- MJE271 BC550C DATE VER# DESCRIPTION OF CHANGE J109 MPSA56 FUNCTION PART# KNOB {NEW} MJE270 BC560C MAY-2011 FROM SINGLE SIDED TO DOUBLE SIDED BOARD 2N5638 MPSA63 CH-4 GAIN... - Page 16 SEE LAYOUT DIAGRAM 8841 M1238 PRODUCTION NOTES 8841 3977 - Yellow spring 3719 - Spring 8581 8581 TO220 parts TO218 parts Sil pad Sil pad 1. ADD THERMAL JOINT COMPOUND (GOOP) BETWEEN Q25 AND Q26; Inner heatsink Inner heatsink Outer heatsink 8849 screw Outer heatsink Q31 AND Q32 .
- Page 17 CH-1 INPUT-2[F1] 1/4W 100K R119 400V CHANNEL-1 INPUT -1 TO92 1/4W 4148 .2in 100V 18AWG CLIP 5106 1/4W RED W3 R114 R115 MC33079P 220P 100V .2in 4148 R110 R111 1/4W 1/4W 1/4W R165 1/4W 1/4W U2:B 10K0 100K 150N 1/4W R321 MPSA63 1/4W...
- Page 18 4148 CH-1 INPUT-1[C1] R162 CHANNEL-1 INPUT-2 C110 C111 1/4W CH-1 INPUT-1[D4] .2in 100V 400V 1/4W MC33079P 220P 100V .2in C108 R143 R142 R146 R145 C123 R185 1/4W 1/4W 1/4W 1/4W 1/4W U9:B CH-1- I/P-2 LEFT R325 100K 10K0 C114 150N 1/4W 1/4W 1/4W...
- Page 19 CLIP 4148 R252 R250 R270 CH-1 INPUT-2[L7] 1/4W 1/4W 1/4W TO92 C138 270R CH-1 INPUT-1[L7] 5106 4148 R251 4148 BASS R210 R211 MPSA63 1/4W 1/4W R189 1/4W 1/4W 1/4W 1/4W P7:A 3K74 249R 562R 4K99 B LIN 4478 R262 100P MC33079P 1/4W C142...
- Page 20 1 - 120V 2 - AG 3 - +15V 3575 INTO WAVE Top Assy M1239 Pcb Mech M1239 M1239 RIGHT LINE OUT LEFT LINE OUT GROUND LIFT 3923 3923 BlankSize - 18875x9600 3425 DPDT PUSH C164 C166 C163 C165 3498 3498 HEADPHONE FOOT/SW...
- Page 21 SEE LAYOUT DIAGRAM PIN CONFIGURATION 2N5401 M1239.PCB_DATABASE_HISTORY 2N5551 M1239 MODEL(S):- MPSA06 MODEL(S):- DATE VER# DESCRIPTION OF CHANGE MPSA13 FUNCTION PART# KNOB {NEW} MAY-2011 FROM SINGLE SIDED TO DOUBLE SIDED BOARD MPSA42 5P0S-2S SWITCH 3393 8402 MPSA56 CH-1 GAIN 4477 8401 MPSA63 P2,P3,P5 BASS,MID,TREBLE...
- Page 22 SEE LAYOUT DIAGRAM M1239 PRODUCTION NOTES Remove this piece. 1- CUT METAL PIN OF J8 , J13 AND J14 XLR 2- RTV ALL CAPACITORS Break this connection here.
- Page 23 M1240 L-MID R-MID V100P0 3903 PCB CONN 4 CIR BOTTOM .156 3538 M1240 V100P0 3903 L-TWEETER R-TWEETER CLINCH ETCH INSERT ORIGIN GUIDE LONG AXIS ORIGIN SEE LAYOUT DOCUMENTATION...
- Page 24 SEE LAYOUT DIAGRAM MODEL(S):- M1240-P0 DATE VER# DESCRIPTION OF CHANGE APRIL-14-2008 V1.00 MULTIPLE X-OVER BOARDS FOR SERVICE...