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SERVICE MANUAL
MODEL TYPE: YS1087
YBA300
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-YBA300-00-1v1.pdf
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Summary of Contents for YORKVILLE YBA300
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Page 1: Service Manual
SERVICE MANUAL MODEL TYPE: YS1087 YBA300 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: Specifications
Specifications All Tube Bass Head Type 300 @ 2/4 ohms switchable Power @ min. impedance (Watts) Minimum Impedance (ohms) 400 Watts Burst Power - 2 cycle 30 - 16,000 Frequency Response (Hz +/-3dB) -90db Hum and Noise (dB) Input Channels 2 x 1/4inch Channel 1 - inputs Gain... - Page 4 MODEL TYPE: YS1087 Block Diagram for YBA300 D E S I G N E D A N D M A N U F A C T U R E D B Y Y O R K V I L L E S O U N D...
- Page 5 1/4W W4:A Input PCB TO220 1/4W W10:A 100U 2N5401 W10:B W11:A 400V 400V 1/4W 1/4W W10:C W11:B Product Product YBA300 Output YBA300 Output 1/4W U1:A 820R U1:B 1/4W 100U 100N +Screen W10:D W11:C 470K 1N5237B 5108 470K TO220 100U W10:E...
- Page 7 BlankSize - 15550x8100 -----------------------------------------------> Into Wave ETCH YS Type - {Company Name} GUIDE MPSA06 MPSA06 MPSA06 MPSA06 MPSA06 TP1C 6400 6400 R24A R24B 6400 R24C R24D R24E R24F TP1F 6400 C16C 6400 6400 C12A LD2F LD2A TP1A LD2B TP1B LD2D TP1D LD2E TP1E LD2C 100N...
- Page 8 M1297 PRODUCTION NOTES SEE LAYOUT DIAGRAM M1297 Drilling History M1297 PCB History MODEL(S):- YBA300 1. Six #2345 spacers mount on top of the board. MODEL(S):- YBA300 DATE VER# DESCRIPTION OF CHANGE 2. Put the knobs on all the pots with glue before mounting the pcb.
- Page 9 6956 W7:D PSGND W7_:D Operate +225V W1:E DOWN DOWN W7:E PSGND W7_:E SPLITTER W1:F 6398 PGRID W1:G Product Product YBA300 YBA300 W7:F NET00101 W7_:F 100N 100N NGRID W1:H PSGND 6956 SPEAKON 4C H PRE-AMP PRE-AMP PCB# PCB# M1301 M1301 Sheet...
- Page 10 M1301.PCB_DATABASE_HISTORY MODEL(S):- YBA300 DATE VER# DESCRIPTION OF CHANGE 2010/02/02 1.00p1 All new layout. 2010/09/10 1.00p2 Value changes for sound tweaks. Change x-f to connector. Add shield to switch pcb. Move DI switch to back. 2010/10/13 1.00p3 Change input link to #2345 connectors with 3056 cable.
- Page 11 & connect it to X32, 3417 3417 then use the 2 OHM 3436 3436 3436 390R 4736 4736 390R switch position. Cut here 5.0W YBA300 3436 M1301 RING-SW RING-SW 5 of 5 InputLink M1301 6544 of 5 2329 CHASSIS GND 2354 Output XF...
- Page 12 5. BEND DOWN THE GREEN WIRE LEAD ON THE BOARD FOR PROPER SOLDERING. 6. PCBSA: Do not break out board before testing. Remove this piece. Notch 6544 3752 (2) 2327 Break this connection here. M1301 POTLIST YBA300 MODEL(S):- FUNCTION PART# KNOB {NEW} GAIN 4425 8430 BASS 4424 8430...
- Page 13 SEE LAYOUT DIAGRAM M1301 M1301.PCB_DATABASE_HISTORY M1301.PCB_DATABASE_HISTORY MODEL(S):- YBA300 MODEL(S):- YBA300 DATE VER# DESCRIPTION OF CHANGE DATE VER# DESCRIPTION OF CHANGE 2010/02/02 1.00p1 All new layout. 2010/09/10 1.00p2 Value changes for sound tweaks. Change x-f to connector. Add shield to switch pcb. Move DI switch to back.
- Page 14 PC8226: Add RTV hole under C116 W29:C 9 +15V W29:D 9 HVCT W29:E 9 W29:F 9 +325V W29:G 9 +470V W29:H 9 +505V Product YBA300 Power Supply W29:I 9 +503V Power Supply PCB# X8017 Sheet Date: Wed Mar 21, 2012 Rev: v1.00 YsType: Filename:...
- Page 15 Support M1357 V1.00 YBA300 SCORE 1.0W R184 0R47 R T V C84 W2 LVps 470U 4007 4007 6747 0R47 100U 4007 5618 4007 7812 1.0W R185 5635 3692 3692 BlankSize - 16275x9050 6746 100U To_PowerAmp 3538 7912 5635 R T V X8017 V1.00...
- Page 16 X8017 PRODUCTION NOTES ( M1357 M1353 M1295 X8017 PCB_DATABASE_HISTORY 1. BEFORE CLINCHING, BREAK PANEL IN 2 ALONG LINE WHERE INDICATED. MODEL(S):- YBA300 DATE VER# DESCRIPTION OF CHANGE 2. B.A. Variant parts: 2010/06/17 1.00p0 New board with XF connectors. BOARD BOARD Eyelets on PS caps, W1 and W3 changed to normal.
- Page 17 YBA300 Parts List 2/7/2012 YS # Description Qty. YS # Description Qty. YS # Description Qty. 6384 JEWELED PILOT LAMP AMBER ROHS 4163-PLUG CONN PLUG 5 POS. .084" V-2 FEMALE 8829 6-32 X 3/8 FLAT PH TAPTITE BO#C HEA 6398 RED...
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