Yorkville Sound 3400 - Manual
Yorkville Sound 3400 – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – AUDIOPRO AP-3400 SERVICE MANUAL; IMPORTANT SAFETY INSTRUCTIONS; CAUTION; REFER SERVICING TO QUALIFIED; Power Sources; CONSULTEZ UN TECHNICIEN QUALIFIE; Alimentation
- Page 7 – SPECIFICATIONS
- Page 8 – extremely important
- Page 10 – DESCRIPTION OF CHANGE
- Page 11 – VCD; SHEAR; RED; WHT; POW SUP; BOTTOM; INPUT BOARD; TOP; GUIDE ETCH; GUIDE; GND; DOWN; NOTE RELAY HAS
- Page 12 – DATE; TO BE HAND INSERTED; WIRE
- Page 14 – LINEWIDTH GAUGE; GRN; BEFORE
- Page 15 – E B C
- Page 17 – YELLOW
- Page 18 – OUTPUT
- Page 19 – Testing Repaired Circuit Board; See details of figure 3 in service manual.
- Page 20 – YORKVILLE SOUND; To speed up the servicing of the AP3000 or
- Page 21 – STEP; Locate the assembly drawing for the version number printed on
- Page 23 – VBE; CHECK
SERVICE MANUAL
3
400
HIGH EFFICIENCY STEREO POWER AMPLIFIER
U.S.A.
Yorkville Sound Inc.
4625 Witmer Industrial Estate
Niagara Falls, New York
14305 USA
Voice: (716) 297-2920
Fax: (716) 297-3689
WORLD HEADQUARTERS
CANADA
Yorkville Sound
550 Granite Court
Pickering, Ontario
L1W-3Y8 CANADA
Voice: (905) 837-8481
Fax: (905) 837-8746
Quality and Innovation Since 1963
Printed in Canada
Manual-Service-AP3400-00-1v6.pdf
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Summary
1 AUDIOPRO AP-3400 SERVICE MANUAL M1012A “THE INPUT BOARD” The input board processes the audio signal from the input jacks to the voltage amplifier board, (M1011A). Each channel consists of a balanced gain stage, defeatable bass boost filter, and a preemphasis filter network. The balanced input, (XL...
10 STEP 3: POWER UP PROCEDURE WITHOUT M1002A BOARDS It is extremely important that you never power up an AP3400 with the interconnecting cablesbetween the circuitboards not connected. Time and possible further damage will be reduced if you test M1011A and M1002A boards separately. To do this youmust...
Identifying Defective Boards in the AP-3000 & AP-3400 Please note: All boards used in the AP-3400 are designated with an `A' suffix (e.g. M1002A) anduse bright red solder mask STEP 1: VISUAL INSPECTION OF FRONT PANEL AND FANa) Check to see whether the green power LED is lit. If not, the amplifie...
