Pioneer Elite S-W1EX Service Manual Download Page 24

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S-W1EX

4.1 INPUT ASSY

C3036

CN3001

C3002

R3034

R3031

C3003

C3005

IC3001

C3017

C3008

R3032

R3033

C3007

R3035

JA3001

R3008

C3006

C3011

S3001

C3014

C3013

KN1948

CN3002

C3033

JA3002

GND

+12V

SIG

GNDA

-12V

FR4 P

INPUT ASSY

GND

Phase +/-SW

OUT

SPEAKER IN

100

110

120

130

140

150

160

170

180

190

SIDE A

INPUT ASSY

CN3101

(ANP7496-B)

CN3001

Summary of Contents for Elite S-W1EX

Page 1: ...Melsele Belgium PIONEER ELECTRONICS ASIACENTRE PTE LTD 253 Alexandra Road 04 01 Singapore 159936 PIONEER CORPORATION 2006 S W1EX RRV3274 POWERED SUBWOOFER S W1EX THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL S AND TYPE S Model Type Porew Requirement Remarks S W1EX LFXTW AC 110V S W1EX MLTXTW AC 220 230V For details refer to Important Check Points for Good Servicing T ZZS JAN 2006 printed in Jap...

Page 2: ...sual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage wattage etc Replacement parts which have these special safety characteristics are identified in this Service Manual Electrical components having such features are identified by marking with a on the schematics and on the parts list in this Service Manual The use of a su...

Page 3: ...he product Please check that neither solder debris nor screws remain inside the product 8 There should be no semi broken wires scratches melting etc on the coating of the power cord Damaged power cords may lead to fire accidents so please be sure that there are no damages If you find a damaged power cord please exchange it with a suitable one 9 There should be no spark traces or similar marks on t...

Page 4: ...6 3 3 D AMP ASSY 18 3 4 POWER SW and SMPS ASSYS 20 4 PCB CONNECTION DIAGRAM 23 4 1 INPUT ASSY 24 4 2 CONTROL MODE and LED ASSYS 26 4 3 D AMP ASSY 28 4 4 POWER SW and SMPS ASSYS 30 5 PCB PARTS LIST 34 6 ADJUSTMENT 39 7 GENERAL INFORMATION 40 7 1 CAUTIONS ON SERVICING AMP ASSY AXW7007 AXW7008 40 7 2 SMPS BLOCK TROUBLE SHOOTING 42 7 3 AMP BLOCK TROUBLE SHOOTING 44 7 4 DESCRIPTION OF SMPS BLOCK 45 7 5...

Page 5: ...ts MLTXTW 220 230 V 50 60 Hz Power Requirements LFXTW 110V 50 60 Hz Power Consumption 56 W Accessories Spikes x 4 Bases x 4 RCA plug cord x 1 Power cable x 1 Ground cord x 1 Operating instructions x 1 NOTE Specifications and design subject to possible modification without notice due to improvements is a trademark placed on a product with Pioneer s Phase Control Technology The Technology enables hi...

Page 6: ... indicates the importance of the safety factor of the part Therefore when replacing be sure to use parts of identical designation Screws adjacent to mark on product are used for disassembly For the applying amount of lubricants or glue follow the instructions in this manual In the case of no amount instructions apply as you think it appropriate NOTES 16 16 16 10 15 6 8 19 13 1 7 17 5 4 3 2 11 18 9...

Page 7: ...ne Bag SHL1259 9 Bottom Foam Protector SHA6078 10 Top Foam Protector SHA6079 11 Silk Bag SHC6028 12 Carton Box See Contrast table 2 13 Operating Instructions See Contrast table 2 14 NSP 15 Accessory Set See Contrast table 2 16 Spike SBA6019 17 Non Skid Pad SEC6075 18 Polyethylene Bag SHL6011 19 Polyethylene Bag SHL6012 Mark No Description Part No Mark No Description S W1EX LFXTW S W1EX MLTXTW NSP ...

Page 8: ...ION A A D 27 29 25 38 45 40 43 37 41 45 19 20 22 45 9 8 15 17 42 39 19 20 45 22 28 24 23 23 33 44 45 44 45 33 45 36 27 29 26 30 33 31 33 20 19 22 14 23 9 10 23 12 22 11 13 15 21 18 16 32 32 32 7 35 35 46 47 48 35 3 4 5 2 6 1 7 35 Glue 5 6 2 34 Door Section ...

Page 9: ...et 5 x 4 SYM6001 20 2 Packing SEC6076 21 2 Screw SBA6042 22 2 Packing FREC 091 NSP 23 2 Door Catcher FRNK 430 NSP 24 2 Iron Axis FRNH 038 NSP 25 2 Iron Bracket L FRNH 039 NSP 26 2 Iron Bracket R FRNH 040 NSP 27 2 Screw SBA6043 NSP 28 2 Center Catcher FRNK 431 29 Screw BPZ30P080FTB NSP 30 Amplifier Assy See Contrast table 2 NSP 31 Iron plate FRNH 036 32 Cushion SEC1831 33 Screw SBA6056 NSP 34 Conne...

Page 10: ...S W1EX 10 1 2 3 4 1 2 3 4 C D F A B E 2 3 SPEAKER SECTION 11 7 1 7 13 6 10 11 2 3 2 3 2 4 12 12 10 8 14 9 5 12 12 Styling 1 14 ...

Page 11: ...06 NSP 2 Acoustic Absorbent FRMV 119 NSP 3 Acoustic Absorbent FRMV 120 NSP 4 Acoustic Absorbent SMT1239 5 Speaker unit A30IR14 51C 6 Passive Radiator DC 30B 7 Gasket SEC1832 8 Grille Assy SMG6100 NSP 9 Logo FRAM 048 10 Grille Assy SMG6099 11 Catcher SLH6012 12 Screw SBA6056 13 Gasket SEC1839 NSP 14 Wire Tie 90mm SEP1003 ...

Page 12: ...B B C C D D E E F F 48 7 1 9 6 2 3 31 5 8 48 25 12 48 48 48 48 48 22 48 43 35 49 11 48 48 10 16 16 16 28 28 28 17 48 49 48 34 48 49 48 48 47 46 48 41 48 14 45 19 43 20 52 50 51 13 40 28 44 32 15 48 49 18 30 38 24 48 23 29 33 42 23 48 36 26 37 42 33 G F A B C E 49 ...

Page 13: ...25 Heat Sink W7 ANH7173 NSP 26 Amp H Sink W7 ANH7177 27 28 Core Spacer W7 AEB7339 29 Radiation Sheet A AEB7348 30 Radiation Cover AEB7349 NSP 31 PCB Spacer AEC1084 NSP 32 PCB Spacer AEC1371 33 Push Rivet AEC7205 34 Wire Saddle AEC7501 35 Mini Clamp AEC7507 36 HS Barrier AEC7509 37 Rivet P4070SN AEC7511 38 RD Protect Sheet AEC7512 39 40 PCB Spacer KGPS 12S AEC7517 41 Cushion Circle 16B AED7052 42 M...

Page 14: ...52151 0310 GREEN GND GREEN CN8101 AKM1293 CN3102 POWER LED 3 2 1 GND GREEN GREEN 51048 0300 CN8102 J8102 D20PYY0310E POWERED SUB WOOFER AMP PART POWER SW POWER SW ASSY AC_N2 AC_L2 AC_N1 CN3 B4P7S VH AC_L1 4 3 2 1 GND GND 7 5 6 AC DET 3 GNDR VA 12V GND VA 12V 1 2 4 ADX7447 COMP AC DET GNDR GNDA VA 12V SIGNAL 6 5 3 4 2 1 ADX7446 FERRITE CORE DTH1168 GND SIGNAL GND VA 12V GNDA GND VA 12V AKM1293 CN31...

Page 15: ...DRIVER Q421 Q431 Q441 Q451 EXCHANGING FET LINE AFTER RELAY ON THE FIRST TIME TO TURN WHEN TO 0V LESS THAN 20mV MAIN VOLUME MIN AT NO SIGNAL INPUT AND OR L481 LEAD WIRES OR CHECK POINT V1 AND V2 PIN1 AND PIN2 OF CN481 ADJUST DC OFFSET BETWEEN NOTE DTH1158 FERRITE CORE AC INLET AKP7197 FU1 NEUTRAL LIVE B2P3 VH CN2 2 1 ADX7444 POWER CODE B4P7 VH AC_L2 AC_N2 AC_N1 AC_L1 2 3 1 4 CN1 LIVE NEUTRAL D AMP ...

Page 16: ...0 R3015 C3013 39k R3018 3 9k R3017 C3014 STBY R3012 0 68k R3013 100 R3014 PHASE SW Buffer STBY C3016 R3019 10k 6 8 5 7 STBY C3015 4NJM4558MD IC3001 220 10 50 R3020 STBY R3099 C3017 AKM1293 CN3001 7 5 6 4 1 2 3 CHASSIS VNE1948 A CHASSIS ACG7050 T SPEAKER TERMINAL 7 AKE7114 CN3002 6 4 5 3 1 2 1000p 100V C3031 C3032 1000p 100V ACG7050 T 680 2W CTF1488 T L3009 R3034 C3035 L3006 C3033 STBY 0 1u GND 100...

Page 17: ...54 BUFFER C3142 M C3143 3300p 47 25 Q3151 R3141 47k 2 2k 10 50 C3155 220k 100k R3140 6 10 50 5 C3140 C3141 47p COMPRESSOR GND STBY R3199 STBY 3 3k R8102 R8101 VOLUME MAIN 22k R3151 10k A ACS7039 VR3141 220 R3153 2SC4081 RS B R3152 1k R3154 C E R3144 STBY C3145 R3145 STBY 0 V 12V C3151 10 50 220k R3115 220 R3114 10 50 C3117 10 50 C3150 0 R3113 47pF 6 7 8 4 5 2 2 NJM4558MD IC3101 HPF R3110 CFTNA 0 3...

Page 18: ... IC303 FEED BACK ADDER BUFFER R304 STBY 0 R382 STBY R305 10 50 C304 NJM4558MD VC 6 6V 47k R306 R307 12V COMP SIGNAL AC DET GNDR 5 3 6 4 GNDA B6B PH K S CN301 1 2 1k R301 R302 C302 6 8k STBY STBY C301 0 100k R303 6 5 STBY Q372 8 7 LIMITTER 4 IC301 STBY C303 NJM4558MD INPUT BUFFER STBY R554 STBY STBY STBY R553 STBY Q553 R379 SYS MUTE STBY R381 2SC4081 RS Q371 10k R377 R378 R399 VNF1084 KN399 STBY C3...

Page 19: ...D421 Q421 2 2 IRFB23N15D R422 S G Q431 D S G D R472 0 R473 0 R474 IR2011S D472 IRFB23N15D IC421 R432 2 2 D431 EP05Q06 8 LO 7 5 6 COM LIN 1 16 HIN 1 8W 4 7 EP05Q06 Vcc VB 1 2 EP05Q06 HO 4 3 Vs 0 1 25 C474 IRFB23N15D 2 2 R442 G S Q451 S D G EP05Q06 D441 Q441 D ACG1098 T C442 C494 CEHAZL 15 100 TS 0 1 100 LF 0 22 R494 3W R491 3W R493 R492 33k R532 0 22 STBY STBY 33k R531 LF 100 16 C531 C532 CEHAT ACG...

Page 20: ... 0 1u ACE7043 C8 RBV 604 D1 GND_CHASSIS VNF1084 KN2 F C10 L2 C9 VNF1084 GND_CHASSIS 0 22uF ACE7045 F L1 C3 KN1 C5 0 1u ACE7043 C4 C7 STBY R1 STBY KN5 TNR20SE221K300 R11 AKR7001 H2 FU1 NEUTRAL LIVE 2 1 B2P3 VH CN2 AKR7001 H1 AC_N2 AC_N1 2 1 AC_L1 AC_L2 B4P7 VH CN1 AC IN 3 4 B4P7S VH AC_N2 CN3 Capacitor Cover DEC2141 AC_L1 4 3 AC_L2 2 AC_N1 1 DEC2141 Capacitor Cover 0 01uF AC250V ACG7039 C2 C1 0 01u...

Page 21: ...C33 9 10 D32 EK06 15k R42 4 7k R41 2 1 CEANP2R2M50 T 2 2uF 50V C44 NP EK06 D34 EK06 D33 2200pF AC250V ACG7047 C19 R10 220pF 100V CQHA221J2A T C18 ACN7133 0 22 5W RD1 2LMF4R7 8 11 7 12 5 13 3 4 14 15 ATS7373 C33 0 01uF 800V 2 T1 1000 63 3 FML 22S D31 ACH7216 1 2 ACE7041 C31 SARS03 D4 RS2LMF104J 100kΩ 2W R3 C15 4700pF 800V ACE7042 Caution About 300Vdc 2 1 5 6k R7 3 4 PC1 TLP421D4 GR 680 2kV ACG7048 ...

Page 22: ...S W1EX 22 1 2 3 4 1 2 3 4 C D F A B E ...

Page 23: ...d on this PCB include all necessary parts for several destinations For further information for respective destinations be sure to check with the schematic diagram 4 View point of PCB diagrams Symbol In PCB Diagrams Symbol In Schematic Diagrams Part Name B C E D D G G S S B C E B C E D G S B C E B C E B C E Transistor Transistor with resistor Field effect transistor Resistor array 3 terminal regula...

Page 24: ...R3035 JA3001 R3008 C3006 C3011 S3001 C3014 C3013 KN1948 CN3002 C3033 JA3002 GND 12V SIG GNDA 12V 7 1 8 5 4 1 7 1 NP LF FR4 P INPUT ASSY N O GND GND M Phase SW OUT IN SPEAKER IN 10 0 10 0 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 20 30 40 50 60 70 80 90 X Y SIDE A SIDE A INPUT ASSY A A A CN3101 B ANP7496 B CN3001 ...

Page 25: ...3011 R3017 R3014 L3008 R3099 C3034 L3007 L3006 C3035 L3005 L3004 L3002 L3001 L3009 C3041 L3003 C3042 R LF FR4 P INPUT ASSY AWU8175 AWU8173 S3001 Phase 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 30 40 50 60 70 80 90 X Y 0 10 0 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 30 40 50 60 70 80 90 X Y SIDE B SIDE B INPUT ASSY A A A ANP7496 B ...

Page 26: ...3199 LF 1 12V SIG 12V 6 1 3 1 GND GND FR4 P 12V 8 5 4 1 8 5 4 1 LF 1 7 1 6 1 GND GNDR 6 1 GNDA 12V 12V AC GND SIG3 SIG2 SIG1 GND DET 12V COMP DET FR4 P AC GND GND GND GNDR GNDA GND LED ASSY MODE ASSY SIG1 SIG3 SIG GND SIG2 CB BINDER P 12V 12V 7 1 FR4 P LF Production Code H I J K CONTROL ASSY GND GND CROSS OVER BYPASS MAIN VOL GND 3 12V GND 3 1 10 0 20 30 40 50 60 70 80 90 100 110 120 130 140 150 1...

Page 27: ... 9 8 7 6 5 4 3 2 1 0 1 AWU8178 FR4 P 1 FR4 P FR4 P AWU8181 GND 12V SIG3 SIG2 SIG1 GND AWU8177 LF MODE ASSY ASSY LED ASSY AWU8183 CONTROL 1 AWU8184 LF LF AWU8180 Q CN3201 12V CN8101 GND 3 SIG1 1 GND 12V GND GND 3 1 CN8102 GND 12V GND SIG3 SIG2 60 70 80 90 100 110 120 130 140 X 10 0 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 100 Y SIDE B SIDE B CONTROL ASSY B MODE ASSY C LED ASS...

Page 28: ...3 IC401 Q421 Q431 Q441 Q451 Q503 CN471 C504 R521 R381 R522 R524 KN493 KN492 KN491 R493 R494 CN481 C552 C555 C553 C554 C556 C557 VR321 R380 R523 R525 Q521 SP SP V2 DC OFFSET CHKEC POINT V1 SIDE PRINTING PRINTING SIDE PRINTING SIDE 8 5 4 1 7 14 8 1 8 5 4 1 8 5 4 1 14 8 7 1 1 ADJ OUTPUT DC OFFSET Bond Bond Bond E 8 5 4 1 8 5 4 1 FC LF TOP SIDE BOND RIVET TUBE SIDE FERRITE Bond 6 1 4 5 1 8 14 7 1 8 NP...

Page 29: ...R516 R518 R517 R491 R492 R533 R510 R511 R501 D501 R508 R509 R504 D502 R502 R435 R436 R437 R455 R456 R457 R411 R410 C409 C408 R421 R431 R441 R451 C441 R447 R445 R444 R446 C421 R425 R426 R427 R424 D506 R328 R327 C486 C487 C558 C559 R535 R552 R382 R526 R527 Q522 R 6 1 2 1 1 2 AWU8170 LF 2 1 Q431 Q421 FR4 P Q441 D AMP ASSY Q451 F 2 AWU8171 B GNDP CN471 1 SP SP CN481 CN301 12V SIGNAL GNDA 1 S S S S D D...

Page 30: ...9 C12 L4 L5 C11 W170 2 1 4 1 AWU8167 100 120V ONLY AWU8165 AWU8164 H AWU8163 LIVE POWER SW ASSY AWU8166 D C PRIMARY J CMKM C2X 680uF 680uF 200V ONLY 220 230V 5 1 3 390uF 400V FU1 NEUTRAL HIGH AR I PRIMARY G H L R POINT DISCHARGE POINT DISCHARGE 680uF 350V 680uF 350V DISCHARGE POINT C14 C11 10 0 10 0 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 20 30 40 50 60 70 80 90 100 110...

Page 31: ...1 FOR FU1 HEAT SINK CMKM C2X PRODUCTION CODE GND 47V BINDER 12V GND GND 12V AC DET GND GND REFERENCE 21506 3 DE N UTILISER QUE LA EN CAS DE REMPLACEMENT ATTENTION 3W 100ohm F E B Y SECONDARY 12V GND GND 680uF 200V 680uF 200V 5 1 AC DET FC 3 GND 47V 47V PRINTING SIDE CHEZ LITTELFUSE INC PRINTING SIDE DISCHARGE POINT 1000 35 1000 35 1000 35 HIGH VOLTAGE AREA I A K 1000uF 63V 1000uF 63V 1000 35 UN 12...

Page 32: ...V GND GND GND GND 12V AC DET IC31 IC32 IC33 PC1 5 7 8 15 9 10 11 12 13 14 UN 12V 12V GND GND GND AC DET CMKM C2X B C E 1 1 1 2 2 2 3 3 3 47V UN 12V 47V 47V 47V 10 0 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 130 140 150 160 170 180 190 200 210 220 230 240 250 260 X Y SIDE B G CN1 CN32 CN31 SMPS ASSY G ...

Page 33: ... 3 2 PRIMARY PRIMARY HIGH VOLTAGE AREA AWU8167 CN2 D2 D1 NEUTRAL LIVE D3 C14 C15 R3 D4 IC1 1 5 5 7 8 100 120V ONLY 220 230V ONLY CMKM C2X C12 or C13 C6 10 0 20 30 40 50 60 70 80 90 100 110 120 130 140 0 SIDE B F G CN1 CN2 CN3 ANP7495 C ANP7495 C POWER SW ASSY F ...

Page 34: ...77 2 MODE ASSY AWU8180 2 LED ASSY AWU8183 1 SMPS COMPLEX ASSY LFXTW AWM7895 2 SMPS ASSY LFXTW AWU8163 2 POWER SW ASSY AWU8167 1 SMPS COMPLEX ASSY MLTXTW AWM7896 2 SMPS ASSY MLTXTW AWU8164 2 POWER SW ASSY AWU8167 Mark No Description Part No GSMPS ASSY Mark Symbol and Description AWU8163 AWU8164 TH2 THERMISTOR NTPAJ8R0LDKB0 Not used VA1 VARISTORS TNR20SE221K300 Not used L1 L2 LINE FILTER ATF7032 ATF...

Page 35: ...22J R 3111 B 117 172 RS1 16S104J R 3112 B 121 172 RS1 16S0R0J R 3113 B 109 172 RS1 16S0R0J R 3114 B 107 172 RS1 16S221J R 3115 B 104 172 RS1 16S224J R 3116 B 112 172 RS1 16S0R0J R 3131 A 107 124 RS1 16S223J Mark No Description Part No R 3132 A 108 124 RS1 16S224J R 3135 A 103 118 RS1 16S393J R 3136 A 106 118 RS1 16S182J R 3137 B 104 127 RS1 16S221J R 3138 B 104 109 RS1 16S224J R 3140 B 120 134 RS1...

Page 36: ...6VS103 RY501 A 185 25 SP RELAY ASR7008 CN301 A 193 180 CONNECTOR B6B PH CN471 A 169 180 CONNECTOR B2P3 VH CN481 A 223 28 CONNECTOR B2PS VH RESISTORS R 301 B 200 171 RS1 16S102J Mark No Description Part No R 302 B 203 171 RS1 16S682J R 303 B 195 163 RS1 16S104J R 306 A 196 151 RS1 16S473J R 307 A 196 154 RS1 16S472J R 308 B 194 153 RS1 16S682J R 309 B 180 135 RS1 16S332J R 310 B 182 135 RS1 16S0R0J...

Page 37: ... C 471 A 193 123 CKSQYB105K16 C 472 A 194 73 CKSQYB105K16 C 473 B 198 119 CKSQYB104K25 Mark No Description Part No C 474 B 201 65 CKSQYB104K25 C 481 A 143 27 MYLAR FILM 2 2 100 ACE7058 C 482 B 153 30 CERAMIC 470p 100 ACG7049 C 483 A 215 35 MYLAR FILM 2 2 100 ACE7058 C 484 B 215 31 CERAMIC 1000p 100 ACG7050 C 485 B 215 24 CERAMIC 1000p 100 ACG7050 C 486 B 232 26 CERAMIC 0 1 100 ACG1098 C 487 B 227 ...

Page 38: ...R 41 A 236 137 RD1 4PU153J R 42 A 236 131 RD1 4PU472J CAPACITORS C 3 A 137 145 FILM 0 22 AC275 ACE7045 C 4 A 101 134 CAP 3300p AC250 ACG7053 C 5 A 101 154 CAP 3300p AC250 ACG7053 C 7 A 77 146 FILM 0 1 AC275 ACE7043 C 8 A 25 106 FILM 0 1 AC275 ACE7043 C 9 A 38 129 CAP 3300p AC250 ACG7053 C 10 A 17 129 CAP 3300p AC250V ACG7053 C 13 A 92 103 ELECTR CAP 680 200 ACH7214 C 14 A 92 69 ELECTR CAP 680 200 ...

Page 39: ...unit and wait about 1 minute 3 Rotate VR321 and adjust to DC 0 V 20mV PROCEDURE V2 V1 SP SP When necessary to confirm How to confirm Setting of the model AC rating power supply Power ON Input signal No signal Main Volume minimum Speaker is connected to CN481 Or 4Ω dummy load open 1 When exchanging MOS FET Q421 Q431 Q441 Q451 IRFB23N15D 2 When exchanging IC421 IC441 IR2011S 3 When exchanging D AMP ...

Page 40: ...AMP ASSY AWU8170 is exchanged It happen FET Q421 Q431 Q441 Q451 IRFB23N15D of AMP breaks in the short mode IC421 and IC441 IR2011S break 4 Don t observe primary side and secondary side with the same oscilloscope simultaneously 5 Since it gets hot rapidly while taking out power don t touch TH1 2 of SMPS Assy Refer to Caution point sheet 6 Since FET has broken when a speaker relay does not turn on i...

Page 41: ...S W1EX 41 5 6 7 8 5 6 7 8 C D F A B E 4 High Voltage Area 5 DISCHARGE POINT D2 A K CN31 1 2 D2 Use Cell Hole 6 TH1 Hight Voltage Area Hight Voltage Area TH1 TH1 D2 D2 CN31 CN31 SMPS ASSY G ...

Page 42: ...ion Check the connecting cable and solder bridge of LED ASSY In AXW7007 when VA1 is damaged replace FU1 and VA1 with new one Check if there is a solder bridge on the SMPS Assy and replace FU1 IC1 and D13 with new ones Disconnect the AC power cord and let the unit stand until any hot ICs have cooled down Once the ICs are cool enough turn on the unit and check the operations Check whether or not the...

Page 43: ...sformer T1 Anode voltage at D6 SAW OK Yes DC OK Yes repair Nothing repair Flat No Saw Tooth Waveform No Saw Tooth Waveform The switching waveform with 21V peak No to 4 to 4 to 5 Is the voltage waveform at both ends of C17 is a saw tooth waveform of flat about 18Vdc Check solder shorting and open circuit at the secondary circuit Check whether or not the amplifier section is in failure Is the voltag...

Page 44: ...s not normal no OK no no no output After 4 seconds no output yes yes yes yes yes Go to SMPS part 1 2 3 4 The speaker relay is on The 8 pin IC is hot Replace the hot IC since it is no longer serviceable Check the resistance between G and S of the FETs Q421 431 441 and 451 with the multimeter is assigned to G and is assigned to S for the multimeter Multi meter ADVANTEST TR6847 or equivalent FET IRFB...

Page 45: ... Wave Switching Wave Surge Absorption Snubber Circuit Switching Wave Auxiliary Winding 3 2 Pin Pin3 Pin2 Pin1 Pin5 GND O C P FB IC1 STR F6467 over 500V High Voltage Hot GND 18Vdc 18Vdc Turn on Resistor Turn on Voltage Vin Pin4 FET Drive O C P Photocoupler D S REG 47V DC Wave Reference Voltage Cold GND REG about 20Vpo about 20Vpo Enhancement Insulation REG 12VDC 12VDC Error Amp Only when the power ...

Page 46: ...oltage reaches 47 V the voltages of all the windings are stabilized and each winding outputs the set voltage 5 Switching has become stabilized 6 In a stabilized condition the starting voltage is supplied from the auxiliary winding 7 If the output load is high changes in the reference voltage are detected by the error amplifier and are transmitted from the photocoupler to IC1 Switching is then cont...

Page 47: ...ator 12V Floating Power supply for H side HI G HO VS VB LO G FET L side FET IRFB23N15D S S D LI VCC 47V D FET H side between FET H side DS 12V VCC 47V between FET L side DS 0V 12V 0V VCC 47V 23 5VDC 23 5VDC 4Ω 0 0 SP LC LPF RC LPF FEED BACK DC OFFSET SP SP differential part adjust 0V 20mV 1min sfter Power ON FET BLOCK FET DRIVER IR2011S LC LPF SP FET DRIVER IR2011S ...

Page 48: ...ON DISASSEMBLY AND ASSEMBLY Removing screw caution Remove the whole marking screw There is no mark on the unit 1 Bottom Plate screw position 2 AMP heat sink holding screw position BBZ30P080FTC 11 BBZ30P180FTC 1 Front Panel side Rear Panel side ABA7098 6 ...

Page 49: ...e heat sink as figure below D31 is held directly by screw IC1 is held by holding clip 2 Adjust tentatively the lead of of D31 and IC1 to the PCB hole When it is unable to insert the lead by mimatching position loosen the screw And then adjust the position of IC1 D31 and screw again D31 IC1 ...

Page 50: ...nk and PCB is not misaligned 4 Confirm that there is no gap between the heat sink and earth plate 5 Solder the lead on the above state 6 Confirm 3 and 4 again after soldering Both heat sink and PCB is round hole Confirm no gap between the heat sink and earth plate Both heat sink and PCB is elliptic hole ...

Page 51: ...left right speakers is 12 cm or less Volume knob VOLUME Sets the subwoofer volume Turn the knob slowly from the MIN position With this unit the bass level can be independently set so do not turn up the bass on the stereo or AV amplifier 5 REAR PANEL 6 Line Level Input terminal LINE LEVEL INPUT Connects to the stereo amplifier s SUBWOOFER PRE OUT terminal with the specially provided RCA plug cord 7...

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