Technics-SEA-3000-Service-Manual电路原理图.pdf

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1、WARNING: DO NOT CONNECT EITHER WIRE TO THE EARTH TERMINAL WHICH IS MARKED WITH THE LETTER E, BY THE EARTH SYMBOL OR COLOURED GREEN OR GREEN/YELLOW. THIS PLUG IS NOT WATERPROOFKEEP DRY. Before use Remove the connector cover. How to replace the fuse The location of the fuse differ according to the typ

2、e of AC mains plug (figures A and B). Confirm the AC mains plug fitted and follow the instructions below. Illustrations may differ from actual AC mains plug. (For United Kingdom) (“EB” area code model only) For your safety, please read the following text carefully. This appliance is supplied with a

3、moulded three pin mains plug for your safety and convenience. A 5-ampere fuse is fitted in this plug. Should the fuse need to be replaced please ensure that the replacement fuse has a rating of 5-ampere and that it is approved by ASTA or BSI to BS1362. Check for the ASTA mark or the BSI mark on the

4、body of the fuse. If the plug contains a removable fuse cover you must ensure that it is refitted when the fuse is replaced. If you lose the fuse cover the plug must not be used until a replacement cover is obtained. A replacement fuse cover can be purchased from your local dealer. CAUTION! IF THE F

5、ITTED MOULDED PLUG IS UNSUITABLE FOR THE SOCKET OUTLET IN YOUR HOME THEN THE FUSE SHOULD BE REMOVED AND THE PLUG CUT OFF AND DISPOSED OF SAFELY. THERE IS A DANGER OF SEVERE ELECTRICAL SHOCK IF THE CUT OFF PLUG IS INSERTED INTO ANY 13-AMPERE SOCKET. If a new plug is to be fitted please observe the wi

6、ring code as shown below. If in any doubt please consult a qualified electrician. IMPORTANT The wires in this mains lead are coloured in accordance with the following code: Blue: Neutral, Brown: Live. As these colours may not correspond with the coloured markings identifying the terminals in your pl

7、ug, proceed as follows: The wire which is coloured Blue must be connected to the terminal which is marked with the letter N or coloured Black or Blue. The wire which is coloured Brown must be connected to the terminal which is marked with the letter L or coloured Brown or Red. 1. Open the fuse cover

8、 with a screwdriver. 2. Replace the fuse and close or attach the fuse cover. Figure A Figure B Fuse cover Fuse (5 ampere) Figure A Figure B Fuse (5 ampere) MAIN P.C.B. SPEAKER SW P.C.B. SPEAKER SELECT LOGIC P.C.B. LED P.C.B. LIGHT SW P.C.B. VOLTAGE CONTROL AMP(L) P.C.B. CURRENT DRIVE AMP(L) P.C.B. S

9、PEAKER TERMINAL(L) P.C.B. POWER SW P.C.B. CP1 CP653 (SOLDER SIDE) T1 (Power transformer) W651-1 CP191B W655-2W655-1W651-2 W351-1 W351-2 CP191A CN602 CP602 W505 W604 W604 CP501 CP603 CP551 W551 W202 W601W403 W201 CP601 CP502 3 . 1 3 . 1 D INPUT TERMINAL P.C.B. A 3 . 1 1 . 3 2 15 . . . 12 1 1. . 4 4 .

10、 . 1 5. . 1 1. . 4 1 2 POWERPHONES POWER METER (L ch)(R ch) R G E H F O I K BRN ORG BLK RED ORG WHT/GRY WHT/BLK WHT/BLK WHT/RED BLK RED BLKBLU RED WHT BLK RED WHT 1. . . . 8 3 . 1 1 . 3 1 . 3 1 . 3 1 . . . . 6 1 . . . . 6 1 . . . . 6 1 . . . . 6 1 . . . . 6 1 2 1 . 3 CP303CN303 CP301 CP201 CP701 CP6

11、55 CN301 CP703 W401 RED BLK BLK RED 1 2 RED BLK 1 . 3 1 2 2 1 1 2 WHT/BLK WHT/ORG 1 . . . . . . . . 10 4 . . 1 1 . . . . . . . . . 11 1 . . . . . . . . . 111 . . . . . . . . 10 10 . . . . . . . . 1 RED BLK RED BLK 1 . . 4 DIRECTNORMAL LEVEL CONTROL (R)(L) GRY ORG 3 . 1 1. . 5 1. . 5 1 . . 4 1. . 5 P

12、OWER SW CIRCUIT (P.C.Board:on page 30) R SPEAKER TERMINAL (R) CIRCUIT (P.C.Board:on page 28) P SPEAKER TERMINAL (L) CIRCUIT (P.C.Board:on page 23) O RELAY CIRCUIT(P.C.Board:on page 30)N B A JK653 HEADPHONES 123 C B A B A 1 2 3 4D B A C CP405 D B A C CP406 C B A B A 1 2 3 4 C B A1 2 3 1 2 3 W603 LAMP

13、(1) GND(1) GND(2) LAMP(2) PROT Lch OUT GND Rch OUT AC RELAY(B) RELAY(A) RELAY CONT B(1) +B(1) GND 123456789 10 11 A B CA B CBA A B RL651 RL653 1 2 56 4 3 RL652 1 2 56 4 3 1 2 1 2 56 4 3 1 2 3 A B C AB W651 2 A B Lch C655 180P L651 C651 0.022 C657 180P L653 C653 0.022 JK651 W652 1 A B Rch C656 180P L

14、652 C652 0.022 C658 180P L654 C654 0.022 JK652 W656 1 SPEAKERS 2 1 L G R AC IN 230V/50Hz(E,EG) 230-240V/50Hz(EB) T2 (Rch) A B C A C D B F1 T2A L1 T1 (Lch) A B C A C D B CP1 CP403 CP2 W653 CP651 CP652 CP3 W1 1 CP653 CP4 CP351 CP352 CP401 CP402 R453 27K R387 1W10 R385 1W10 C363 0.22 C361 0.22 R391 1W1

15、0 R389 1W10 R388 1W10 R386 1W10 C364 0.22 C362 0.22 R392 1W10 R390 1W10 L354 R394 1/4W10 L353 R393 1/4W10 R655 1W180 R657 1W150 R656 1W180 R658 1W150 R660 1/4W120 R659 1/4W120 D653 MA165TA D651 MA165TA D652 MA165TA R651 4.7K R661 1/4W220 Q651 2SC2458ABCTA POWER SUPPLY R751 1/4W2.2 R752 1/4W2.2 C752

16、25V470 C751 25V470 D751 754 1SR35200TB D754 D753 D752 D751 F2 T2A C1 1000P S1 (POWER) C660 1000P C659 1000P 1 2 3 4 To SPEAKER SELECT LOGIC CIRCUIT (CP603) on page 19 H 1 2 1 2 ToMAIN CIRCUIT (W403) on page 19 D W656 2 W652 2 W655 1 W655 2 W651 1 W1 2 1 2 3 1 2 3 FUSE CIRCUIT (P.C.Board:on page 30)

17、Q 1 2 3 1 2 3 :POSITIVE VOLTAGE LINE :NEGATIVE VOLTAGE LINE :SOURCE SIGNAL LINE 13.3V 14.1V 14.1V 14.1V AC 51.3V AC 11.1V AC 37.6V AC 37.6V AC 51.3V AC 11.1V AC 37.6V AC 37.6V R376 1W10 R375 1W10 B CURRENT DRIVE AMP (L) CIRCUIT (P.C.Board:on page 29) K CN304CP304 1 2 3 4 5 1 2 3 4 5 TP302 3 2 1 4 AB

18、 2 5 6 7 1 3 4 8 2 5 6 7 1 3 4 8 E C A B D E D B C A 1 2 3C B A C702 71V33000 C704 71V33000 CP702 1 2B A B A C B A1 2 3 B A C DD C A B VR302 500(B) CN302CP302 Q354 2SC3944AQRS PRE DRIVE Q362 Q360 Q360,364 2SA1941R DRIVER Q402 2SB1036RSTTA OVER LOAD DET. Q364 Q356 2SA1535AQRS PRE DRIVE Q358 Q352 2SC1

19、815BGL CURRENT DRIVE (ICQ ADJ.) Q358,362 2SC5198R DRIVER R316 1/4W3.3K R326 1/4W1K C352 0.1 R352 1/4W10K R354 1/4W3.3K TH352 100K C354 680P R356 1/4W680 R364 1/4W2.2 R360 1/4W2.2 R398 1/4W330 R362 1/4W2.2 R366 1/4W2.2 C356 680P R358 1/4W680 R370 5W0.22 R368 5W0.22 R374 5W0.22 R372 5W0.22 L352 R402 1

20、/4W270 R404 1/4W4.7K R382 5W0.22 R384 5W0.22 R378 5W0.22 R380 5W0.22 C358 0.047 D402 MA185TA CP656 C716 0.01 C720 50V1 W402 R406 15K D702 D704 D706 D708 C718 0.1 C714 0.1 CP704 C706 100V100 C708 100V100 D702,704,706,708 EGP30DL6414 C360 0.047 R704 1/4W6.8 R702 1/4W6.8 C318 100V1 CN303CP303 1 2 3 4 5

21、 1 2 3 4 5 TP301 AB E C A B D E D B C A 1 2 3C B A 123 C701 71V33000 C703 71V33000 CP701 1 2B A B A C B A1 2 3 A C D D C A B VR301 500(B) CN301CP301 Q353 2SC3944AQRS PRE DRIVE Q361 Q359 Q359,363 2SA1941R DRIVER Q401 2SB1036RSTTA OVER LOAD DET. Q363 Q355 2SA1535AQRS PRE DRIVE Q357 Q351 2SC1815BGL CUR

22、RENT DRIVE (ICQ ADJ.) Q357,361 2SC5198R DRIVER R315 1/4W 3.3K C351 0.1 R351 1/4W10K R353 1/4W3.3K TH351 100K C353 680P R355 1/4W680 R363 1/4W2.2 R359 1/4W2.2 R397 1/4W330 R361 1/4W2.2 R365 1/4W2.2 C355 680P R357 1/4W680 R369 5W0.22 R367 5W0.22 R373 5W0.22 R371 5W0.22 L351 R401 1/4W270 R403 1/4W4.7K

23、R377 5W0.22 R379 5W0.22 R381 5W0.22 R383 5W0.22 C357 0.047 D401 MA185TA W351 2 CP655 C715 0.01 C719 50V1 W401 R405 15K D701 D703 D705 D707 C717 0.1 C713 0.1 CP703 C705 100V100 C707 100V100 D701,703,705,707 EGP30DL6414 C359 0.047 R703 1/4W6.8 R701 1/4W6.8 C317 100V1 R325 1/4W1K 2 5 6 7 1 3 4 8 2 5 6

24、7 1 3 4 8 3 2 1 4 ( ) (+) ( ) (+) CAPACITOR CIRCUIT (P.C.Board:on page 23) M W701 1W701 2W701 3 W351 1 E701 CAPACITOR CIRCUIT (P.C.Board:on page 23) M W702 1W702 2W702 3 123 W352 2 W352 1 E702 (+) ( ) (+) ( ) CURRENT DRIVE AMP (R) CIRCUIT(P.C.Board:on page 29)L :POSITIVE VOLTAGE LINE :NEGATIVE VOLTA

25、GE LINE :SOURCE SIGNAL LINE C AMP (Lch) ICQ ADJ. 51.2V 0.4V 51.3V 1V 1.3V 0.7V 0V 0.4V 1V 51.3V 0.4V 51.3V 0V 0V 0V 10.8V 1.3V 51.5V 0.7V 0.7V 51.5V 0V 0.7V 51.5V 0V 51.3V 51.5V C AMP (Rch) ICQ ADJ. 51.2V 0.4V 51.3V 1V 1.3V 0.7V 0V 0.4V 1V 51.3V 0.4V 51.3V 0V 0V 0V 10.8V 1.3V 51.5V 0.7V 0.7V 51.5V 0

26、V 0.7V 51.5V 0V 51.3V 51.5V 123456 CP202 NFB OUT(+) OUT( ) +B(3) GND B(3) C B A 3 2 1 AB C B A IC302 M5219P DIFFERENTIALAMP (CASCADE / CURRENT MIRROR) Q308 2SC2631RSTTA FLOATING POWER SUPPLY Q304 2SA1123RSTTA FLOATING POWER SUPPLY Q306 2SA1123RSTTA FLOATING POWER SUPPLY Q302 2SC2631RSTTA FLOATING PO

27、WER SUPPLY Q260 Q260 2SC2631RSTTA CLASS AAAMP Q256 Q254 Q256 2SC2458ABCTA LIMITER Q254 2SD1761EF VOLTAGE CONTROLAMP (ICQ ADJ.) Q258 Q266 Q262 2SA1123RSTTA CLASS AAAMP Q258 2SA1048ABCTA LIMITER Q264 2SK20130Y MOS CLASS AAAMP Q266 2SJ3130Y MOS CLASS AAAMP S G D TH252 250 R254 1/4W4.7K R256 1/4W150 R25

28、8 1/4W270 VR252 1K(B) C256 0.1 C252 68P D254 MA165TA R262 27K R270 1/4W1.8K R266 1/4W100 R272 1/4W2.2 C258 50V1 C260 50V1 R274 1/4W2.2 D256 MA165TA C254 68P R268 1/4W100 R264 27K R278 1/4W270 D264 MA185TA R324 1/4W1 R304 1/4W120 C304 6.3V100 C306 6.3V100 R302 1/4W1.8K R328 1.8K C302 2700P C322 680P

29、R306 1/4W1.8K R3081/4W120 R3121/4W10 R3101/4W10 C312 16V10 R320 1/4W560 D308 MA29WATA C320 100V1 R322 100K C316 16V33 D304 MA4100MTA C310 16V10 C314 16V33 D302 MA4100MTA C308 220P R314 1/4W 3.3K R330 1/4W 100 D306 MA29WATA R318 1/4W 560 D262 MA185TA (+) ( ) R276 1/4W270 Q264 S G D D258 MA4100MTA D26

30、6 MA165TA 123456 CP201 NFB OUT(+) OUT( ) +B(2) GND B(2) C B A 3 2 1 AB C B A IC301 M5219P DIFFERENTIALAMP (CASCADE / CURRENT MIRROR) Q307 2SC2631RSTTA FLOATING POWER SUPPLY Q303 2SA1123RSTTA FLOATING POWER SUPPLY Q305 2SA1123RSTTA FLOATING POWER SUPPLY Q301 2SC2631RSTTA FLOATING POWER SUPPLY Q259 2S

31、C2631RSTTA CLASS AAAMP Q255 Q253 Q255 2SC2458ABCTA LIMITER Q253 2SD1761EF VOLTAGE CONTROLAMP (ICQ ADJ.) Q257 Q265 Q261 2SA1123RSTTA CLASS AAAMP Q257 2SA1048ABCTA LIMITER Q263 2SK20130Y MOS CLASS AAAMP Q265 2SJ3130Y MOS CLASS AAAMP S G D TH251 250 R253 1/4W4.7K R255 1/4W150 R257 1/4W270 VR251 1K(B) C

32、255 0.1 C251 68P D253 MA165TA R261 27K R269 1/4W1.8K R265 1/4W100 R271 1/4W2.2 C257 50V1 C259 50V1 R273 1/4W2.2 D255 MA165TA C253 68P R267 1/4W100 R263 27K R277 1/4W270 D263 MA185TA R323 1/4W1 R303 1/4W120 C303 6.3V100 C305 6.3V100 R301 1/4W1.8K R327 1.8K C301 2700P C321 680P R307 1/4W120 R305 1/4W1

33、.8K C311 16V10 R319 1/4W560 D307 MA29WATA C319 100V1 R321 100K C315 16V33 D303 MA4100MTA C309 16V10 C313 16V33 D301 MA4100MTA R313 1/4W 3.3K D305 MA29WATA R317 1/4W 560 D261 MA185TA TP251 (+) ( ) R275 1/4W270 Q263 S G D D257 MA4100MTA D265 MA165TA TP252 R311 1/4W10 R309 1/4W10 C307 220P R3291/4W00 1

34、234 5678 VOLTAGE CONTROLAMP (L) CIRCUIT (P.C.Board:on page 25) I D267 MA165TA D259 MA4100MTA ToMAIN CIRCUIT (W201) on page 18 D 1234 5678 D260 MA4100MTA D268 MA165TA ToMAIN CIRCUIT (W202) on page 18 D VOLTAGE CONTROLAMP (R) CIRCUIT (P.C.Board:on page 28) J :POSITIVE VOLTAGE LINE :NEGATIVE VOLTAGE LI

35、NE :SOURCE SIGNAL LINE 2.2V 2V 2.5V 0.1V 1.9V 0V 51.2V 2.2V 1.4V 51.2V 0V 1.4V 0V 0.4V 2.3V 1.9V 0V 1.9V 51.3V 51.3V 9.5V 51.3V 50.3V 51.1V 0V0V0V9.3V 9.5V0V0V1.1V 51.2V 9.3V 10V 50.5V 49.9V 2.2V 2V 2.5V 0.1V 1.9V 0V 51.2V 2.2V 1.4V 51.2V 0V 1.4V 0V 0.4V 2.3V 1.9V 0V 2.5V 51.3V 51.3V 9.5V 10.2V 51.3

36、V 50.3V 51.1V 0V0V1.1V9.3V 9.5V0V0V0V 51.2V 9.3V 10V 50.5V 49.9V 51.2V 51.3V 51.2V 51.3V 51.3V 51.3V 51.2V 51.2V V AMP (Lch) ICQ ADJ. V AMP (Rch) ICQ ADJ. 2.5V 1.9V 10.2V SPEAKER SW CIRCUIT (P.C.Board:on page 26) F SPEAKER SELECT LOGIC CIRCUIT R502 1/2W4.7K W403 PROT Lch IN GND Rch IN AC RELAY(B) RE

37、LAY(A) RELAY CONT B(1) B(1) GND IC451 AN7073 MUTING / PROTECTION B A C B A W601 CP601 123456789 10 123456789 10 CN602CP602 W604W604 1 2 3 4 5 1 2 3 4 5 1 2 3 4 1 2 3 4 (SPEAKERS) S604 (A+B) S603 (B) S602 (A) S601 (OFF) D622 LN846RP C (CURRENT DRIVE) D621 LN446YP C (VOLTAGE CONTROL) 1234567 891011121

38、314 IC601 TC4001BPN SPEAKER SELECTOR 1 2 3 4 W505 1 2 3 4 5 CP603 CP551 LAMP(2) LAMP(1) GND(2) GND(1) (POWER METER) (Lch)(Rch) CP501 CP502 E F D B A C C B A 123456789 10 11 IC501 BA6138 METER DRIVE AMP 123456789 IC502 M5218AP BUFFER AMP (METER) 1234 5678 R511 1/4W470 A B TH501 100K TH502 100K R508 6

39、.8K VR502 1K(B) VR501 1K(B) FE D A B C Q603,604 2SC2458ABCTA LED DRIVE Q604 Q601 Q602 Q603 Q601,602 2SA1048ABCTA RELAY DRIVE Q451 2SA992EFPTA RELAY DRIVE Q503 2SA1048ABCTA SWITCHING R601 47K C601 0.01 C602 0.01 R602 47K D627 629 MA4051MTA R606 4.7K D602 D601 R607 4.7K R612 220 R613 330 D629 D618 (A+

40、B) D619 (A) R617 330 R616 220 D627 D620 (B) R620 330 R619 220 D628 D618 620 LN846RP C D625MA165TA D624MA165TA R609 22K R610 10K D606D607 D604 D603 R608 22K R605 22K D605 D616 R611 47K D609 D608 D610 D611 D612 D613 D614 D615 D601 616 MA165TA D617 MA165TA C610 35V10 C604 0.01 R604 47K R603 47K C603 0.

41、01 D641D640 D626 MA165TA D640,641 MA185TA R623470 R621470 R451 56K R452 47K R454 15K C451 10V330 C452 0.022 C453 16V47 R455 10K C454 50V4.7 D452 MA4110MTA R456 15K C455 50V4.7 R457 1/4W560 D451 MA185TA R513 100K R515 56K C501 50V3.3 C502 50V3.3 D505 MA4100MTA C505 50V4.7 R506 1.5M C504 50V0.47 R504

42、1/4W270 R501 1/2W4.7K R503 1/4W270 C503 50V0.47 R505 1.5M D453 MA165TA R529 12K D503 MA165TA D507 MA165TA R523 150K R512 1/4W470 C506 50V4.7 D506 MA4100MTA R531 10K R507 6.8K R509 470 R532 10K R510 470 R524 150K D504 MA165TA R530 12K D508 MA165TA R526 22K R525 22K R527 1K R528 1K R521 100K R520 22K

43、C510 50V0.33 R517 3.3K R519 10K C509 0.01 C508 16V3300 R516 680 D501 MA165TA D502 MA4082MTA R518 10K 123456789 MUTING DC DET AC DET BIAS OUTPUT SHINK OVERROAD DIRECTOR (P.C.Board:on page 24) H 1 2 3 4 ToRELAY CIRCUIT (W603) on page 22 N 1 2 1 2 LED CIRCUIT (P.C.Board:on page 25) G D623 MA4036MTA ToR

44、ELAY CIRCUIT (CP403) on page 22 N R624 150 R622330 :POSITIVE VOLTAGE LINE :NEGATIVE VOLTAGE LINE 0V14.2V0.1V14.2V0V0.1V 0V14.2V0V0V14.2V 14.2V0V 14.4V 13.5V 14.3V 14.4V 13.9V 13.9V 0V 0.6V 9.7V 0.1V 3.2V0V0.5V1.9V1.9V0.5V0V9.9V 10.2V 0V0V0.5V 0V0V0.5V9.9V 14.4V 14.4V 0V 0V0V0V4.5V14.2V10.4V11.2V 0.9

45、V 1.9V POWER METER (Lch) ADJ. POWER METER (Rch) ADJ. 14.4V 9.9V 14.4V 14.1V LAMP (B) CIRCUIT (P.C.Board:on page 24) CA INPUT TERMINAL CIRCUIT (P.C.Board:on page 23) W202W201 B(3) GND B(3) OUT( ) OUT( ) NFB B(2) GND B(2) OUT( ) OUT( ) NFB 123456123456 IC202 AN7062N VOLTAGE AMP IC201 AN7062N VOLTAGE A

46、MP 1 2 3 123456789 101112131415161718 ABEC D D208 MA4160MTA C226 100V1 R218 1/2W8.2K R214 1/4W100 Q204 Q208 Q210 Q206 R220 1/4W100 R222 1/4W100 C230 27P C232 0.01 C228 27P R212 1/4W 100 Q202 R226 33K R224 1/4W3.3K R208 18K C208 27P C210 220P R206 1.2K C206 25V220 C216 82P C204 220P R204 18K R104 330

47、K R202 470 C202 25V22 C222 0.1 R216 47K C220 100V1 R210 560 C214 330P R230 33K R228 1/4W3.3K C218 100V1 C224 1000P 123456789 101112131415161718 R213 1/4W100 Q203 Q207 Q209 Q205 R219 1/4W100 R221 1/4W100 C229 27P C231 0.01 C227 27P R211 1/4W 100 Q201 R225 33K R223 1/4W3.3K R207 18K C207 27P C209 220P

48、 R205 1.2K C205 25V220 C215 82P C203 220P R203 18K R103 330K R201 470 C201 25V22 C221 0.1 R215 47K C219100V1 R209 560 C213 330P R229 33K R227 1/4W3.3K C217 100V1 C223 1000P E A C D B 123 D207 MA4160MTA C225 100V1 R217 1/2W8.2K E101 C191 82P C192 82P C193 82P C194 82P L194 R194 560 R193 560 VR191 20K

49、(A) (LEVEL CONTROL L) R192 560 L192 R191 560 L191 R1962.2K JK101 Lch Rch DIRECT JK101 Lch Rch NORMAL INPUT CP191APL508PL506PL504PL502 PL510PL512PL514PL516 W505 3 W505 4 PL507PL505PL503PL501 PL509PL511PL513PL515 W505 2 W505 1 W551 1 2 3 4 S551 (METER LIGHT) C552 0.01 C551 0.01 CP191B Q201 204 2SA1123RSTTA PRE DRIVE Q205 208 2SC2631RSTTA PRE DRIVE Q209,210 2SA1123RSTTA PRE DRIVE MAIN CIRCUIT(P.C.Board:on pages 26,27)D LAMP (A) CIRCUIT (P.C.Board:on page 24) B LIGHT SW CIRCUIT (P.C.Board:on page 25) E OFFON L193 VR192 20K(A) (LEVEL CONTROL R) R195 2.2K ToVOLTAGE CONTROLAMP(R) CIRCUI