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Service Manual
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-K4-00-1v4.pdf
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Table of Contents
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Summary of Contents for YORKVILLE K4
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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 K4 Parts List 6/28/2010 YS # Description Qty. YS # Description Qty. YS # Description Qty. YS # Description Qty. 6405 RED 3MM LED 2V0 20MA BRT 5260 _22U 50V 20%CAP T&R RAD .2EL 4815 1/4W 12R T&R RES 8761 6-32 X 1/2 PAN PHIL MS ZINC CLEAR 6408 GRN 3MM LED 1V9 5MA FROSTED 5282 _10U 16V 20%CAP T&R 5X7MM .2NP...
- Page 4 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 5: 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 6 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 7 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 8 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 9 4.75" 8r 30WPGM CUT OUT R10 , R12 UNTIL 2 TO 4 mV MC33079P 1/4W IS ACROSS TP1 AND HORN TP2 WITH AMP COLD TIP142 MC33079P U7:D 100V 100V 7286 1/4W 1/4W U7:C 6902 100V 100V R181 R182 TO218 1/4W 1/4W 680R 100N...
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Page 10: Power Amplifier
WARNING: 120 VDC IS BETWEEN C55 TO GROUND.THIS PRESENT A SIGNIFICANT SCHOCK HAZARD. PLEASE, USE EXTREME CAUTION WHEN SERVICING! 0A2 BAT85 6405 R191 1/4W R186 R187 R189 100K 1/4W 1/4W 1/4W BC550C 220K 470R R192 BAT85 1/4W R188 CURRENT LIMIT 6405 BC560C 470R... - Page 11 R126 1N5251BRL 22V0 R127 MC7815CT TUBE120VDC 1.0W R128 1/4W +29VDC FLMP 6872 R129 MC7815CT 220U 160V 1.0W R130 4007 4007 FLMP 220U 6872 R131 4148 1/2W 160V 4007 220U 6871 R132 160V 4007 4007 1.0W MC7915CT FLMP W50 BLU -29VDC TUBE AG2 3414 DPDT Switch...
- Page 12 BlankSize - 16600x11000 4032 3498 3498 3498 Pcb Mech M1238 3602 Top Assy M1238 CH-4 GAIN M1238 L-MID R-MID SUB-OUT LEFT RIGHT PCB CONN 4 CIR BOTTOM .156 250V R175 6451 3903 3538 R167 R166 100N R174 3903 .156 BOTTOM CONN 100N 100N...
- Page 13 SEE LAYOUT DIAGRAM M1238 PRODUCTION NOTES 8841 3977 - Yellow spring 8581 TO220 parts Sil pad 1--ADD THERMAL JOINT COMPOUND (GOOP) BETWEEN Q25 AND Q26; Inner heatsink Outer heatsink Q31 AND Q32 . COVER WITH VINYL CAP (8609) AND RTV. 8841 8833 screw 3719 - Spring...
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Page 14: Pin Configuration
SEE LAYOUT DIAGRAM M1238 DATABASE HISTORY POT LIST MODEL(S):- MODEL(S):- DATE VER# DESCRIPTION OF CHANGE FUNCTION PART# KNOB 08-FEB-2007 1.00 FIRST PROTO CH-4 GAIN 4032 9922 08-MAR-2007 2.00 REPLACE OPTOCOUPLER PIN CONFIGURATION PC#7281,CHANGE W3,W6,W8 & W9 TO NORMAL EYELET 13-FEB-2008 3.00 PC#7291,REPLACE FAN EYELETS WITH MOLEX. - Page 15 1/4W 4148 100K R119 CHANNEL-1 INPUT -1 TO92 1/4W ORGAN 100V 400V 5106 1/4W 220P 100V MC33079P MINI 4148 R110 R111 R114 R115 1/4W R165 1/4W 1/4W 1/4W 1/4W U2:B 10K0 100K 150N 1/4W R321 MPSA63 1/4W 20K0 4148 1/4W 4148 6405 MINI...
- Page 16 4148 R162 CHANNEL-1 INPUT-2 C110 C111 1/4W ORGAN 100V 400V 1/4W 220P 100V MC33079P C108 R143 R142 R146 R145 R185 C123 1/4W 1/4W 1/4W 1/4W 1/4W U9:B R325 100K C114 150N 10K0 1/4W 1/4W 1/4W 20K0 4148 113K MINI 100N 220P CH-1 I/P-2 LEFT R157...
- Page 17 4148 R252 R250 R270 1/4W 1/4W 1/4W TO92 270R C138 5106 6405 4148 R251 4148 BASS R210 R211 1/4W 1/4W R189 MPSA63 1/4W 1/4W 1/4W 1/4W P7:A 3K74 249R 562R 4K99 B LIN 4478 R262 100P MC33079P 1/4W 4148 C142 270R R216 C155...
- Page 18 BlankSize - 19100x10400 Top Assy M1239 Pcb Mech M1239 R291 M1239 2/3 10K0 2327 C189 R286 C188 681R0 2337 C207 X149 C170 X157 X154 X150 X183 10K0 R289 X156 X155 C114 10K0 R290 C102 R270 C118 C119 C177 100N C171 C105 C104 100N...
- Page 19 SEE LAYOUT DIAGRAM M1239 PRODUCTION NOTES 1- CUT METAL PIN OF J8 , J13 AND J14 XLR 2- RTV ALL CAPACITORS Break this connection here. 3- C167, B.A. WILL PUT A 220N #5600 INSTEAD OF 22N...
- Page 20 SEE LAYOUT DIAGRAM M1239.PCB_DATABASE_HISTORY POT LIST MODEL(S):- MODEL(S):- DATE VER# DESCRIPTION OF CHANGE FUNCTION PART# KNOB {NEW} MAY-10-2005 1V00 FIRST LAUNCH 5POS-2S SWITCH 3393 8400 FEB-07-2008 1V01 PC#7464, REPLACE R248 & R249 FROM 1K TO 2K #4808 CH-1 GAIN 4477 8399 PC#7217, REPLACE C167 22N #6435 WITH 220N #5600 P2,P3,P5,...