YORKVILLE Audiopro 3400, Service Manual

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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) and
use bright red solder mask
STEP 1: VISUAL INSPECTION OF FRONT PANEL AND FAN
a) Check to see whether the green power LED is lit. If not, the amplifier has a power supply (M1013
board), transformer, A.C. switch or line cord problem.
b) If the red protect LED stays on or samples off and on, this usually indicates a problem with one or both
of the M1002 current amplifier modules and possibly damage to the M1012 voltage amplifier board.
Note: Any of the Molex cables from the M1011 circuit board to the M1012 input board as well as the
M1002 current amplifiers can cause the protect LED to stay on or sample on and off. Check for
misaligned pin connections or see if the ribbon cables have been cut or pinched through their insulation.
c) The fan running at full speed on power up usually indicates a problem with the fan circuitry on the
M1013 board, but it can also be caused by M1011 circuit problems. Erratic fan behaviour can be caused
by damaged thermistors located under the M1002 heat sinks.
d) No output on either or both channels can be caused by intermittent push switches at the input.
STEP 2: VISUAL INSPECTION OF INTERNAL CHASSIS
a) After removing the lid, look for any signs of smoke, charring or burnt components. If the M1002
boards have such damage, the M1011, M1012 and M1013 boards may also be damaged even if there is
no similar charring on their components. At the least, there will be some damage to the M1011 voltage
amp board in the form of blown ICs, or possibly open or shorted diodes, LEDs, resistors, transistors or
capacitors. Exploded electrolytic capacitors indicate you have
major repairs to the M1002, M1011 and
M1013 boards.
STEP 3: POWER UP PROCEDURE WITHOUT M1002 BOARDS
It is
extremely important that you never power up an AP-3000 or AP-3400 without following the
procedure located on the M1011 schematic highlighted within the box drawn in dashed lines. Failure to do
so will possibly result in damaging a good board. This procedure should only be done on a no load
scoped output to insure the rest of the circuit boards are working before installing new or repaired M1011
modules. The output of a fully operational M1011 will give a 70V peak to peak sinusoidal (undistorted)
wave form when a patch plug is attached at Pin #1. If the wave form is distorted or non- existent, or there
is DC offset, do not attempt to connect any M1002 module to the M1011 or you will immediately destroy
the new or repaired M1002 and will also cause more damage to the rest of the amplifier.
Note: M1002?s power supply wires (red, yellow, white, blue and black) must be removed as well as the
input Molex ribbon to the M1002 when attempting to power up an M1011.
STEP 4: DISMANTLING AND REASSEMBLY PRECAUTIONS
a) When removing power supply wires or resoldering wires to eyelets on the M1011 board, double check
that there are no solder bridges or icicles bridging traces or other eyelets. Failure to do so will result in the
destruction of newly installed boards as well as other boards in the unit. Also make sure wire color codes
are correctly oriented in their proper eyelets, and be careful that ribbon cables don?t get pinched or cut
under the M1011 boards as this will result in shut down into the protect mode or even destruction of more
boards.
b) When reinstalling M1002 boards, make sure the output wires, i.e. the red and yellow signal and black
ground wires, are not reversed. If either channels or both are reversed, the amp will stay in protect mode
with the red LED staying on or sampling on and off.
AP3400 Parts List 10/28/98
YS # Description Qty. YS # Description Qty. YS # Description Qty.
6410 GREEN 3MM LED 1V7 5MA BULK BRT CLR 3 5621 470U 63V 20%CAP RADIAL ELECT BULK 1 4854 1/4W 1K2 5% T&R RES 2
6411 RED 3MM LED 1V9 5MA BULK BRIGHT 3 5892 6800U 80V 10%CAP RADIAL ELECT BULK 8 4624 1/2W 1K5 5% T&R RES 1
6419 BRIDGE 35A 400V WIRE LEAD GI3504 2 4522 4K7 TRIM POT 2 4824 1/4W 1K5 5% T&R RES 12
6425 BAV21 200V 0A25 DIODE T&R 6 4400 _10K 25A-AUD/DETENT STYLE"P15"16MM 2 4847 1/4W 2K2 5% T&R RES 2
6438 1N4004 400V 1A0 DIODE T&R 10 3590 12.0 AMP SWITCH BREAKER WHITE 1 4804 1/4W 3K 5% T&R RES 8
6825 1N4148 75V 0A45 DIODE T&R 71 3822 500NH COIL 18AWG 0R000 AIR CORE 1 6124 1/4W 3K 5%MINI T&R RES 2
6934 MR854 400V 3A0 DIODE FAST RECOV 24 3820 4UH COIL 14AWG ZOBEL HORIZONTAL 2 4744 5.0W 3K6 5% BLK RES 8
6439 1N5225B 3V0 0W5 ZENER 5% T&R 4 3464 WIRE TO BOARD CRIMP 18-24 AWGT/LEAD 2 4827 1/4W 4K7 5% T&R RES 7
6440 1N750ARL 4V7 0W5 ZENER 5% T&R 5 3465 WIRE TO BOARD CRIMP 16-18 AWG TIN 4 4982 1/4W 4K7 5%MINI T&R RES 4
6459 1N4732A 4V7 1W0 ZENER 5% T&R 2 3486 CLIP 250X032 22-18AWG DISCO-LOK 14 4778 1/4W 5K36 1% T&R RES 2
6461 1N5240BRL 10V0 0W5 ZENER 5% T&R 1 3489 CLIP 250X032 18-22AWG DISCO/INSL 2 4862 1/4W 5K6 5% T&R RES 2
6450 1N5242B 12V0 0W5 ZENER 5% T&R 4 3490 CLIP 250X032 14-16AWG DISCO/INSL 1 4887 1/4W 7K5 5% T&R RES 11
6822 1N4745A 16V0 1W0 ZENER 5% T&R 4 3682 250 MALE PCB TAB BULK ON CATRIGE 14 4990 1/4W 8K2 5%MINI T&R RES 2
6824 1N5246B 16V0 0W5 ZENER 5% T&R 4 3447 DUAL BINDING POST TPP3 2 4800 1/4W 10K0 1% T&R RES 20
6432 1N5248B 18V0 0W5 ZENER 5% T&R 2 3498 M203-02 PLAIN PC MNT JK SKT 2 4829 1/4W 10K 5% T&R RES 2
6465 1N5250B 20V0 0W5 ZENER 5% T&R 4 3660 FEMALE PC MOUNT XLR NTRX.NC3FPR-H-O 2 4775 1/4W 14K0 1% T&R RES 5
6433 1N5257B 33V0 0W5 ZENER 5% T&R 3 3451 0.089 OD SMALL EYELET ELECTROPLATED 18 4630 1/2W 15K 5% T&R RES 10
5101 BC550C TO92 NPN TRANS. T&R 19 3542 SE44 LARGE EYELET TIN-PLATED BRASS 23 4830 1/4W 15K 5% T&R RES 5
5102 BC560C TO92 PNP TRANS. T&R 10 3630 FAN GUARD METAL 80MM CHROME 1 4771 1/4W 17K8 1% T&R RES 11
5103 MPSA06 TO92 NPN TRANS. T&R 1 3860 FAN 80MM X 80MM 40CFM 12VDC 1 6125 1/4W 18K 5%MINI T&R RES 2
5107 2N5551 TO92 NPN TRANS. T&R 5 3692 HEATSINK THERMALOY 6079-PB 5 4885 1/4W 20K 5% T&R RES 4
5113 MPSA42 TO92 NPN TRANS T&R 4 3893 AAVID HEATSINK 5811B 2 4777 1/4W 21K5 1% T&R RES 2
5114 MPSA92 TO92 PNP TRANS T&R 5 3894 AAVID 5972-B H/S W/TAB B.O. 4 4832 1/4W 22K 5% T&R RES 1
6854 2N6517 TO92 NPN TRANS. 2 3501 B52200F006 COMP WASH #4 SMALL 13 4833 1/4W 27K 5% T&R RES 6
5105 MPSA13 TO92 NPN DARLINGTONT&R 1 3750 VINYL CAP SC 0.500 BLACK 1/2" 1 4840 1/4W 33K 5% T&R RES 6
5106 MPSA63 TO92 PNP DARLINGTONT&R 3 3789 TERMINAL STRIP (BEAU INTERCONNECT) 1 4868 1/4W 36K 5% T&R RES 2
5123 NJM431L TO92 SHUNT REG T&R2V 4 3806 RECTANGULAR WASHER FOR TRANS SUPPRT 1 4908 1/4W 45K3 1% T&R RES 1
6456 BF872 TO202 PNP TRANS. 1 8682 #4 TEFLON WASHER .125ID .281OD .031 1 4834 1/4W 47K 5% T&R RES 8
6873 MJE340 TO126 NPN TRANS 2 8498 6-32 X 3/8 STEEL PEM STUD 4 4836 1/4W 68K 5% T&R RES 6
6874 MJE350 TO126 PNP TRANS. 2 8499 6-32X1 STEEL PEM STUD 7 4772 1/4W 82K5 1% T&R RES 6
6891 TIP50 TO220 NPN TRANS 2 3795 #8 GROUND LUG ZIERICK 505-169 3 4898 1/4W 91K 5% T&R RES 4
6893 MJE5730 TO220 PNP TRANS 2 3468 8? 3/16 SJT AC LINE CORD STRIP 17" 1 4838 1/4W 100K 5% T&R RES 4
6779 MJH11018 TO218 NPN DARLINGTON 1 3821 HEYCO #1200 STRAIN RELIEF 1 4776 1/4W 113K 1% T&R RES 2
6911 BDX54C TO220 PNP DARLINGTON 1 3521 SIDE ENTRY PCB CONN .156 8POS 1 4839 1/4W 150K 5% T&R RES 4
6912 BDX53C TO220 NPN DARLINGTON 1 3541 24 PIN BREAKAWAY 90 .156 0.333 4668 2.0W 220K 5%10MM BODY T&R RES 2
6752 MTP10N15L TO220 N CHAN MOSFET 2 3543 20 PIN BRKAWAY 90 LOCK .156 0.75 4841 1/4W 220K 5% T&R RES 3
6923 MTP2P50E TO220 P CHAN MOSFET 4 3593 PCB CONN 90 5 CIR .156 3 6126 1/4W 220K 5%MINI T&R RES 4
6924 MTW10N40E TO247 N CHAN MOSFET 2 8701 4-40 KEPS NUT ZINC 17 4843 1/4W 470K 5% T&R RES 4
6925 MTP8P20 O220 P CHAN MOSFET 2 8793 4-40 HEX NUT ZINC 6 6127 1/4W 470K 5%MINI T&R RES 2
6900 YS6900 (22) TO3 NPN TRANS. 16 8760 6-32 KEPS NUT TIN PLATED 64 4844 1/4W 1M 5% T&R RES 1
6927 YS6927 (23) TO3 PNP TRANS. 16 8800 6-32 KEPS NUT ZINC 28 4797 1/4W 1M2 5% T&R RES 1
6840 MC33078P IC DUAL OP AMP 5 8854 6-32 X 1/4 HEX NUT ZINC 6 4888 1/4W 4M7 5% T&R RES 2
6884 NE5532N IC DUAL OP AMP 1 8787 8-32 KEPS NUT ZINC 3 3699 RELAY 2C 01AMP DC48 ???MA PC-S 1
5190 MBS4992 TO92 8V5 DIAC T&R 2 8797 5/16-18 KEPS NUT SJ500 1 3594 9.5" 5C-24AWG RIBBON HEAVY DUT.100" 3
6444 MAC224-4 TO220 40A TRIAC 200V 2 3797 TO-247 THERMO CONDUCTIVE PAD 3 3595 17" 8C-24AWG RIBBON HEAVY DUT.100" 1
6477 100K 5% 1/4W THERMISTOR T&R 0.2 8 3815 TO3 PREGREASED MICA 56-03-2AP 32 8865 4-40 X 5/16 PAN PH MS SJ500 4
5401 _10P 500V 5%CAP T&R RAD CER.2"NPO 4 3846 TO220 MICA THERMAL CONDUCTOR 56359B 8 8742 4-40 X 3/8 PAN PH TAPTITE JS500 4
5404 _27P 100V 10%CAP T&R TUBULAR NPO 2 4597 22AWG STRAN TC WIR 19 8861 4-40 X 3/8 PAN PH MS SJ500 1
5408 _47P 100V 10%CAP T&R BEAD NPO 4 4599 22AWG SOLID SC WIR T&R 79 8741 4-40 X 1/2 PAN PH MS JS500 13
5410 100P 100V 10%CAP T&R BEAD NPO 4 5299 24AWG SOLID SC WIR RAD 43 8871 4-40 X 5/8 PAN PH MS SJ500 2
5412 220P 100V 10%CAP T&R BEAD NPO 2 4745 5.0W 0R1 5% BLK RES 12 8799 #6 X 1/4 PAN PH TYPE B JS500 2
5201 470P 100V 5%CAP T&R RAD CER.2"NPO 2 4749 5.0W 0R15 5% BLK RES 4 8801 6-32 X 3/8 PAN PH TAPTITE SJ500 1
5416 470P 50V 10%CAP T&R BEAD NPO 6 4974 1.0W 0R47 5%FLAME PROOF T&R RES 4 8829 6-32 X 3/8 FLAT PH TAPTITE BO#4 HEA 15
5816 680P 100V 5%CAP T&R RAD CER.2"NPO 2 4677 1/2W 1R 5% T&R RES 4 8747 6-32 X 1/2 HEX ND MS ZINC 16
5422 __1N 50V 10%CAP T&R BEAD NPO 2 4877 1/4W 1R 5% T&R RES 2 8761 6-32 X 1/2 PAN PHIL MS ZINC CLEAR 64
5273 __1N5 200V 5%CAP T&R RAD CER.2"NPO 2 4973 1.0W 1R 5%FLAME PROOF T&R RES 4 8806 6-32 X 1/2 PAN PH TAPTITE SJ500 2
5427 __2N2 500V 10%CAP T&R RAD CER.2" YB 4 4688 1/2W 2R2 5% T&R RES 7 8802 8-32 X 3/8 PAN QUAD TPTTE SJ500 #6H 7
6451 __4N7 250V 20%CAP AC Y ONLY RAD10MM 1 4911 1/4W 2R2 5% T&R RES 8 8749 10-32 X 1/2 QDX PH TAPTITE JS500 6
5272 __6N8 100V 5%CAP T&R RADIAL.2"FILM 2 4748 2.0W 3R9 5% BLK RES 2 8762 10-32 X1/2 TRUSS QUAD TAPTITE JS500 4
5204 _10N 100V 10%CAP T&R RADIAL.2"FILM 2 4733 5.0W 5R6 5% BLK RES 2 8833 10-32 X 7/8 HEX CAP GRD 5 SJ500 4
5834 _10N 250V 20%CAP RAD POLYFILM BULK 2 4610 1/4W 10R 2%FLAME PROOF T&R RES 8 8783 10-32 X 1 PAN QUAD TT JS500 BLACK 10
5210 _22N 100V 10%CAP T&R RADIAL.2"FILM 11 4875 1/4W 10R 5% T&R RES 2 8736 5/16-18X2-3/4 GRD 5 HEX BOLT JS500 1
6435 _22N 275V 20%CAP AC X2 RAD BLK15MM 2 4592 1/8W 15R 2%FLAME PROOF T&R RES 1 3433 0.080 SPACER OD.700 ID.330 PLASTIC 2
5224 _47N 100V 10%CAP T&R RADIAL.2"FILM 2 4591 1/8W 22R1 1%FLAME PROOF T&R RES 2 8663 11/64 NYLON SPACER (MICRO PLASTIC) 66
5226 _68N 100V 5%CAP T&R RADIAL.2"FILM 2 4607 1/8W 39R 2%FLAME PROOF T&R RES 8 8629 10-32 X 1/4 SPACER PHENOLIC 16
5228 100N 100V 5%CAP T&R RADIAL.2"FILM 4 4899 1/4W 39R 5% T&R RES 8 3741 .5 SPACER ID-.171 OD-.25 #912-500 2
5314 100N 50V 10%CAP T&R BEAD X7R 9 4817 1/4W 47R 5% T&R RES 6 3743 SNAP ON 0.5" SPACER RICHCO 3
5229 150N 63V 10%CAP T&R RADIAL.2"FILM 2 6134 1/4W 47R 5%MINI T&R RES 4 8679 6-32 X 1/4 X 1.75 NYLON SPACER(HEX) 1
5882 220N 250V 10%CAP RAD POLYFILM BULK 6 4811 1/4W 68R 5% T&R RES 2 8667 SHOULDER WASHER SWS-229 LENGTH 1/8 9
5234 470N 63V 10%CAP T&R RADIAL.2"FILM 2 4593 1/8W 150R 2%FLAME PROOF T&R RES 4 8818 3/4 OD X 5/16 ID X .08 THICK WASHER 1
5255 __1U 63V 20%CAP T&R RADIAL ELE.2" 2 4859 1/4W 150R 5% T&R RES 4 3511 #6 FLAT WASHER NYLON 2
5257 __2U2 63V 20%CAP T&R RADIAL ELE.2" 4 4645 1/8W 220R0 1%FLAME PROOF T&R RES 4 8485 #6 SPLIT WASHER ZINC 6
5259 __4U7 63V 20%CAP T&R RADIAL ELE.2" 5 4857 1/4W 220R 5% T&R RES 3 8491 #10 SPLIT LOCK WASHER BO 10
5281 _10U 16V 20%CAP NONPOLAR T&R .2" 6 4770 1/4W 249R 1% T&R RES 12 8817 #10 FLAT WASHER BLACK OXIDE 8
5629 _10U 160V 20%CAP RADIAL ELECT BULK 4 4867 1/4W 270R 5% T&R RES 7 8850 #10 INT TOOTH LOCKWASHER BO 4
5260 _22U 50V 20%CAP T&R RADIAL ELE.2" 12 4855 1/4W 330R 5% T&R RES 3 8873 1.250ODX5/16ID FENDER WASHER BARE 1
5627 _47U 10V 20%CAP NONPOLAR RAD BULK 2 4821 1/4W 470R 5% T&R RES 10 3436 DPDT PUSH SW PCMT H BREAK B4 MAKE 2
5267 100U 25V 20%CAP T&R RADIAL ELE.2" 2 4822 1/4W 820R 5% T&R RES 2 3422 THERMO/BRKR:N/CLOSED OPEN@60C 1
5619 330U 100V 20%CAP RADIAL ELECT BULK 4 4609 1/8W 1K 2%FLAME PROOF T&R RES 4 1288 AP-3400 T?RD 1
5630 330U 25V 20%CAP RADIAL ELECT BULK 6 4823 1/4W 1K 5% T&R RES 17