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CANADA
Yorkville Sound
550 Granite Court
Pickering, Ontario
L1W-3Y8 CANADA
Voice: (905) 837-8481
Fax: (905) 837-8746
www.vtcproaudio.com
U.S.A.
Yorkville Sound Inc.
4625 Witmer Industrial Estate
Niagara Falls, New York
14305 USA
Voice: (716) 297-2920
Fax: (716) 297-3689
V42
Power
V 4 2
POWER AMPLIFIER
Service Manual
Channel A
Channel B
-15
-12
-15
-12
-18
-9
-18
-9
Protect
Protect
Clip
-6
Clip
-6
-21
-21
Power
Power
Signal
-3
Signal
-3
-30
-30
-00
-00
0
0
-00
-00
0
0
dB
dB
MODEL TYPE: YS4020
Manual-Service-VTC-V42-00-1v0
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Summary of Contents for VTC Pro Audio V42
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Page 1: Service Manual
L1W-3Y8 CANADA 14305 USA Power Channel A Channel B Voice: (905) 837-8481 Voice: (716) 297-2920 V 4 2 Protect Protect Clip Clip POWER AMPLIFIER Power Power Signal Signal Fax: (905) 837-8746 Fax: (716) 297-3689 Service Manual MODEL TYPE: YS4020 www.vtcproaudio.com Manual-Service-VTC-V42-00-1v0... -
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 VTC V42 Parts List 5/5/2010 YS # Description Qty. YS # Description Qty. YS # Description Qty. YS # Description Qty. 5906 RED 3MM LED 1V9 20MA.4SPCER T&R 2448 15.00 AMP CIRCUIT BREAKER 4988 1/4W 1K5 5%MINI T&R RES 8629 10-32 X 1/4 SPACER PHENOLIC 5908 GRN 3MM LED 1V9 20MA.4SPCER T&R...
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Page 4: Power Amp
4N35 ZD11 1/4W 1/4W U2:B 220R 3V0 0W5 U2:A MINI Product Product POWER AMP POWER AMP AP4020 / V42 AP4020 / V42 PCB# PCB# M1126 M1126 Sheet Sheet Date: Date: Mon Feb 08, 2010 Mon Feb 08, 2010 Rev: Rev:... - Page 5 BRIDGE TP5A NL4MP-1 Score 3628 CLINCH NL4MP-1 INSERT ORIGIN LONG AXIS 3.5" 24" ORIGIN DO NOT STUFF WIRES OR SPEAKON JACKS FOR SERVICE BOARDS. FOR PRODUCT V42 DO NOT STUFF WIRES IN EY2, EY4, EY6, AND EY8. SEE LAYOUT DOCUMENTATION...
- Page 6 TORQUE 4 INCH/LB #3797 THERMO PAD HEATSPREADER 5. MOUNTING HARDWARE FOR TO3 OUTPUTS 10. DO NOT STUFF WIRES FOR MODEL V42 IN EY1, EY6, EY5, AND EY2. #8701 4-40 KEPS NUT IN AREA INDICATED ON BOARD 2/2 #8835 BOLT TORQUE 4 INCH/LB TO-3 TRANSISTOR 3.
- Page 7 SEE LAYOUT DIAGRAM M1126 Database History 2N5401 2N5401 2N5401 Mnnnn Drilling History MODEL(S):- AP4020 2N5551 2N5551 2N5551 MPSA06 MPSA06 2N6517 MODEL(S):- {MODEL} DATE VER# DESCRIPTION OF CHANGE MPSA13 MPSA13 MPSA13 OCT/97 1.00 FIRST PRODUCTION DATE VER# DESCRIPTION OF CHANGE MPSA43 MPSA43 MPSA43 NOV/10/97...
- Page 8 CONVERT TO PCAD2002 C213 W36:B W37:B 470U 03-JUN-2009 13.00 CREATE X8013, M1127 FOR AP4020 AND M1138 FOR V42 PC#7718,ONLY FOR V42. CHANGE R201A,R201B,R202A W36:C W37:C W39:B 4 W39:A R202B FROM 10K0 TO #4773 12K1 1% 1/4W TRANSFORMER SHOWN WIRED FOR...
- Page 9 M1138 V42 C208 XFRM CT C207 BRIDGE BRIDGE 275V C210 C209 BRIDGE MOUNTED BY WIRING 470U 470U D240 Q240 PC-C TO BOT AMP TO TOP AMP -100V RELAY 1A -100V C215 C214B 220P BC550C R203B 10K0 100V BRIDGE R202B C201B...
- Page 10 SEE LAYOUT DIAGRAM PRODUCTION NOTES: M1138 V42 1 FOR C1 USE 22N FOR NORTH AMERICAN AND 680N FOR EURO. 2 ADD RTV UNDER RELAY AND BEND LEADS FLAT TO PCB. RELAY...
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Page 11: Pin Configuration
REDO SOLDERMASK FOR 0.030" SPREAD SEP/2005 12.00 CONVERT TO PCAD2002 03-JUN-2009 13.00 CREATE X8013, M1127 FOR AP4020 AND M1138 FOR V42 PC#7718,ONLY FOR V42. CHANGE R201A,R201B,R202A R202B FROM 10K0 TO #4773 12K1 1% 1/4W 2N6517 PER PCs 7718 and 7738 2N5401 03-FEB-2010 . - Page 12 BC560C TO92 1N750ARL 5102 470N BC560C 1/4W MINI MPSA63 5102 4148 1/4W MINI MINI 220N TO92 1/4W 5106 FLMP 1/4W 249R 1/8W TO92 1/4W 1/4W 1/4W 100K FLMP 249R LM13600N 1/8W U4:A MINI 1/4W MINI FLMP 1/4W 249R 1/8W 1/4W 1/4W FLMP 249R...
- Page 13 Removed shear, solder update, std board size 03-MAR-2009 8.00 CREATE X8011, M1128 FOR AP, VX AND M1133 FOR VTC PC#7717, M1133,V42 AND V44 CHNAGE R34 AND R47 FROM 470R TO 2K #4808 X8011 DRILL HISTORY MODEL(S):- AP4020 AND AP4040/VX2400 AND VX2402/V42 AND V44...
- Page 14 M1133 V42/V44 RCLP LVGND M1128 AP-VX M1133 PRTCT 21in 14C 100K 2329 3604 To Power Supply Pcb BC560C 100K 220P 470N 220P 4148 470K Channel A Channel B MPSA63 R Clip 470K 620R R136 R Activity R55A 220R 14K7 4148...
- Page 15 SEE LAYOUT DIAGRAM X8011 PRODUCTION NOTES - M1133 V42/V44 3511 8870 WASHER SCREW SPACER PT#3739...
- Page 16 Removed shear, solder update, std board size 28-MAY-2009 8.00 CREATE X8011, M1128 FOR AP, VX AND M1133 FOR VTC PC#7717, 7718 - M1133,V42 AND V44 CHANGE R34 AND R47 FROM 470R TO 2K #4808 *PLACE IMPLEMENTED CHANGES INTO BOARD HISTORY TO-92...
- Page 17 U3:A MC33078P 220P 100V 1/4W 1/4W 1/4W FILTER SW 1K54 9K76 9K76 68N 100V 68N 100V 0.1% 0.1% LINE XLR U4:A S1:B 150N 63V 150N 63V MC33078P 1/4W 120K 220P 100V LIMITER 1/4W 1/4W 1/4W 1K54 9K76 9K76 0.1% 0.1% S2:A MONO-STEREO-BRIDGED S3:A...
- Page 18 3417 3436 3436 BRIDGED - STEREO - MONO R112 150N R109A 3436 R111 R109B 150N 100N 100N 4148 LSPRE RSPRE 14 PIN SCKT MC33078P 4148 10K0 9K76 220P 9K76 100N 220P 100N 100N 220P 220P 220P 220P 1K54 1K54 LINE XLR CLINCH INSERT ORIGIN...
- Page 19 M1129.sch_schematic-DATABASE_HISTORY M1129 DRILL HISTORY MODEL(S):- AP4020 / AP4040 / AP2020 / AM1CE MODEL(S):- AP2020/AP4020/AP4040/AM1CE DATE VER# DESCRIPTION OF CHANGE DATE VER# DESCRIPTION OF CHANGE OCT/1997 1.00 FIRST PRODUCTION APR-03-2003 V06 NOV/12/97 2.00 REVERSED INPUT POLARITY. MODIFIED FOR AP2020 AUG-15-2005 V07 CONVERT TO PCAD2002 DEC/02/97 C27, C28, C29, C30 TO 150n...
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