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19

SYS-76HT

DSW-76 Section

NOTE FOR SCHEMATIC DIAGRAM

WARNING:

Parts marked with this symbol 

 have critical characteristics.

Use ONLY replacement parts recommended by the manufactur-
er.

CAUTION:

Before returning the unit to the customer, make sure you make 
either (1) a leakage current check or (2) a line to chassis resis-
tance check. If the leakage current exceeds 0.5 milliamps, or if 
the resistance from chassis to either side of the power cord is 
less than 460 kohms, the unit is defective.

WARNING:

DO NOT return the unit to the customer until the problem is lo-
cated and corrected.

NOTICE:

ALL RESISTANCE VALUES IN OHM. k=1,000 OHM
M=1,000,000 OHM
ALL CAPACITANCE VALUES IN MICRO FARAD.
P=MICRO-MICRO FARAD
EACH VOLTAGE AND CURRENT ARE MEASURED AT
NO SIGNAL INPUT CONDITION.
CIRCUIT AND PARTS ARE SUBJECT TO CHANGE
WITHOUT PRIOR NOTICE.

!

配線図について

  

 印の部品は安全を維持するために重要な部品です。

従って交換時は必ず指定の部品を使用してください。

注)

(1) 指定なき抵抗値は Ω、k は kΩ、M は MΩ を示す。

(2) 指定なきコンデンサーの値は

µ

F、p は pF を示す。

(3) 各部の電圧は無信号の値を示す。

(4) この配線図は基本配線図です。改良等のため変更する

ことがありますのでご了承ください。

!

Summary of Contents for SYS-76HT

Page 1: ...trations using in this service manual are slightly different from the actual set Please use this service manual with referring to the operating instructions without fail For purposes of improvement sp...

Page 2: ...ician LEAKAGE CURRENT CHECK Before returning the unit to the customer make sure you make either 1 a leakage current check or 2 a line to chassis resistance check If the leakage current exceeds 0 5 mil...

Page 3: ...ATT CROSSOVER CONTROL HPF DIRECT MODE SW SW202 LINE INPUT ALC POWER AMP REVERSE PHASE NORMAL SPEAKER U201 U203 U203 20 0 40 10 dB 20 0 40 10 dB 20dB 1 84dB 4 34dB 4 34dB 27 2dB 50 5dB 20V 4ohrm THD 0...

Page 4: ...IC s TL074CN U201 203 PRE AMP P W B UNIT NJM4558D U101 AMP P W B UNIT Inverting Input 2 Non inverting Input 2 Non inverting Input 1 CC V CC V 1 2 3 4 8 5 6 7 9 10 11 12 13 14 Output 3 Output 4 Non in...

Page 5: ...5 SYS 76HT DSW 76 Section DSW 76 PRINTED WIRING BOARDS 1 2 AMP P W B UNIT...

Page 6: ...6 SYS 76HT DSW 76 Section DSW 76 PRINTED WIRING BOARDS 2 2 PRE AMP P W B UNIT POWER P W B UNIT...

Page 7: ...type RW Winding 3A 1W K 10 FR Fuse resistor RN Metal film 3D 2W M 20 F Lead wire forming RK Metal mixture 3F 3W 3H 5W CE Aluminum foil 0J 6 3V F 1 HS High stability type electrolytic CA Aluminum solid...

Page 8: ...7601 042 D 100mA 1N4148 75V 197 031n4148 e D221 223 00D DSW 7601 043 D 1N4002 197 101n4002 e DZ201 00D DSW 7601 048 ZD 1 2W 3 3V 199 15000335 e DZ202 203 00D DSW 7601 046 ZD 1 2W 12V 199 05001203j e...

Page 9: ...021tip35c e Q108 00D DSW 7601 027 TRTIP36C 192 022tip36c e Q109 00D DSW 7601 032 TR2N5551 192 1572n5551 e Q110 00D DSW 7601 033 TR2N5401 192 1582n5401 e Q111 113 00D DSW 7601 028 TR2SC1815GR 192 027c...

Page 10: ...1U 50V 132 104j503 e C108 CERAMIC C 0 1U 50V 30 3f104z503 e C109 110 ERECTRIC C 100uF 16V 135 3107m16 e C111 ERECTRIC C 220U 16V 135 3227m16 e C112 ERECTRIC C 4 7U 50V 135 3475m50 e C113 CERAMIC C 0...

Page 11: ...W 7601 045 D 1 2W 12V 199 05001200j e RESISTER GROUP R301 00D DSW 7601 007 R 0 56K 2W 110 20561jk3 e CAPACITORS GROUP C301 FILM C 0 01uF 275V 132 103kb74 e OTHER PARTS DROUP P301 3PIN CONNECTOR 175 1d...

Page 12: ...30 104 103 101 29 101 26 8 7 102 31 32 17 11 15 16 14 19 18 12 101 20 27 21 13 101 25 24 23 35 34 33 22 105 102 3 5 6 4 2 1 Parts marked with this symbol have critical characteristics Use ONLY replace...

Page 13: ...00206 1BBE 1 18 BRACKET Large R 361 FE 05008 0LBE 1 19 HEAT SINK 309 ABS 05003 0BAE 1 20 00D DSW 7601 015 SUB TRANS for E3 150 e0351201 e 1 20 00D DSW 7601 014 SUB TRANS for E2 150 e0351200 e 1 21 BRA...

Page 14: ...2 AM03008D040 J 14 103 M3 10 SCREW 352 BM03010D064 J 2 104 M3 14 SCREW 351 BM03014A093 J 1 105 M4 16 SCREW 351 HM04016A218 J 4 106 M3 10 SCREW 352 AM03010D065 J 1 107 M3 14 SCREW 351 BM03014A093 J 1 1...

Page 15: ...some case supplying of part may be refused Ref No nsp Part No Part Name Remark Q ty New 1 nsp 00D SCC 7600 009 Cabinet Ass y BHKXDN054001 1 2 00D SCC 7600 010 Tweeter Ass y BHXGDN054001 1 3 00D SCC 7...

Page 16: ...SCA 7600 010 Cabinet Ass y BHKXDN053005 1 2 00D SCA 7600 011 Tweeter Ass y BHXGDN053001 1 3 00D SCA 7600 001 Woofer Ass y LB0300610005 1 4 Crossover Ass y BHFYDN053000 1 5 00D SCA 7600 003 Grill Ass y...

Page 17: ...m BHSHDN056003 1 207 Microfoam BHSHDN053001 6 208 Microfoam BHSHDN054001 1 209 nsp 00D SYS 6500 005 Oak Feet JD5081000001 7 210 00D SYS 76HT 001 Owner s Manual YS0170200101 1 211 nsp 00D SYS 6500 007...

Page 18: ...MIT MUTE 15V AGND 15V PTC OUT STBY 12V AC1 PGND AC2 SIGNAL IN PRE AMP P W B UNIT PGND 12VAC 12VAC STBY 12V AC ST AC AC AC POWER P W B UNIT LI MIT MUTE 15V AGND 15V PTC in AC2 AC4 PGND AC3 AC1 PGND PG...

Page 19: ...check If the leakage current exceeds 0 5 milliamps or if the resistance from chassis to either side of the power cord is less than 460 kohms the unit is defective WARNING DO NOT return the unit to the...

Page 20: ...74 9 10 8 11 4 U201D TL074 1 2 3 4 5 6 7 P202 LI MIT MU TE 15V AGND 15V PTC OUT PTC 15V MU TE 15V 15V C205 10u 16V 20 C224 0 1u 15V C225 0 1u C206 10u 16V 20 15V R220 10k 1 2 3 4 5 6 sw203 SW 4 R238 2...

Page 21: ...V AC10 5V GND STBY Vst 1 2 1 2 P301 F301 S1 1 2 P303 1 2 A C303 4 7n 250VAC TO P201 TO CON104 HI L N D301 12V TO P104 AC120V 60HZ AC230V 50HZ POWER INPUT FUSE TRANSFORMER 1 25A 125VAC 1 25A 250VAC INP...

Page 22: ...1 20 SUB TRANS COMPLEX 1 21 BRACKET Small L STEEL 1 22 BRACKET Small R STEEL 1 23 BACK PANEL STEEL 1 23 BACK PANEL STEEL 1 24 POWER SWITCH COMPLEX 1 25 AC CORD COMPLEX 1 25 AC CORD COMPLEX 1 26 COVER...

Page 23: ...R 4 101 Screw 4X20 STEEL 12 102 Screw 3 5X16 STEEL 8 Ref No WEEE Mark Part Name Material Q ty 1 Cabinet Ass y Complex 2 Tweeter Ass y Complex 2A Cosmetic baffle ABS 1 2B Tweeter Ass y Complex 1 3 Woof...

Page 24: ...76 28 30 104 103 101 29 101 26 8 7 102 31 32 37 17 11 15 16 14 19 18 12 101 20 27 21 13 101 25 24 23 35 34 33 22 105 102 3 5 6 4 2 1 You have to remove the parts that marked WEEE mark when the recycl...

Page 25: ...B 2A 3 3 4 5 6 7 7 8 101 101 102 You have to remove the parts that marked WEEE mark when the recycling processing Europe model only 1 2 2B 2A 3 4 5 6 7 8 101 101 102 You have to remove the parts that...

Page 26: ...ANS No Material 1 PA 2 COPPER WIRE 3 COPPER ALLOY 4 COPPER WIRE 5 COPPER ALLOY 6 COMPLEX 7 PET PRESS BOARD 8 PET PRESS BOARD 9 ACETATE 10 STEEL No Material 1 PA 2 COPPER WIRE 3 COPPER ALLOY 4 COPPER W...

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