Text preview for : sb_as100.pdf part of Technics Sb-As100 Subwoofer 100w rms



Back to : sb_as100.pdf | Home

A CONTROL CIRCUIT

:POSITIVE VOLTAGE LINE

:SOURCE SIGNAL LINE

R412 10K C407 0.082 R410 22K R408 VR402- 1 10K 100K(B)

VR402- 2 100K(B)

C408 0.027 R406 22K

C417 16V10

R430 10K

6V 5 6

6V 7

6V 8

12V

C419 0.1

6V 8 9

6V 10

6V 11 GND 12

6V 13

6V 14

6V

IC402 BA4558CX
PRE AMP C412 16V220 C311 0.1 4 3 6V 2 6V 1 6V 7 6V R419 3.3K 6 6V 5 6V

IC401 RSIZAS500P- 5
PHASE AMP Vcc 4 12V 3 6V 2 6V 1 6V

C401 100P R301 10K C310 100P R303 10K C301 50V4.7 R401 10K

C402 100P R402 15K R403 10K C413 16V22 R416 100K

R405 330K C404 0.047 C403 0.047 R404 100K

C415 100P

JK301

INPUT
C411 R417 16V22 3.3K

R418 3K C410 16V22 C414 16V220

R351 1K

R420 100

R431 100K

R370 220 ZD351 MTZJ10C C356 0.022 R362 680K C355 16V100 C S401 (PHASE) NORMAL C REVERSE

R363 82K

R380 680K

C351 50V1

R432 100K

R407 100

C418 0.1

R361 820K

1.9V 5 6

0.2V 7

9.3V 8

10V

R352 1M

C352 50V0.47

R353 36K

IC301 BA4558CX
AUTO POWER OFF

0.6V

1.4V 0V R354 220

Q352,353 2SC945P1TA
LED DRIVE R368 1.5K R367 3.3K R364 10K

Q354 RSQZAS500P- 4
POWER SUPPLY 12.2V 12.2V

4

3 5.2V

2 4.7V

1 9.4V

Q351 2SC945P1TA
AUTO POWER OFF

R355 270K

11.5V R374 56 ZD352 R375 MTZJ10C 82

Q352
R356 240K 1.8V 1.7V R366 8.2K R365 2.4V 22K

R357 10K

R359 150K C357 220P

Q353
0V 12.2V R360 220K 0.7V

R358 10K

R369 15K

D352 C354 16V68 D351

C353 50V1

D353

R373 82K

D351- 353 RSQZAS500P- 2

R371 100K

C420 0.022

12.2V

VR401 10K(B) (VOLUME)

C416 100P

R429 10K

(LOW PASS FILTER) C405 0.082 C406 0.027

C409 50V4.7

R413 1K

5 4 3 2 1 RB401

CN402 1 2 3

B MAIN CIRCUIT

D

C

B

A A B C541 25V100

IC506 RSIZAS500P- 3
POWER AMP 12.2V C546 0.1 D506 RSQZAS500P- 6 C545 0.1 D505 RSQZAS500P- 6 C551 4.7 18.9V C549 0.1 R555 10K

9.1V 20 BHO

9.1V 19 BHS

0V 18 BLO

17 BLS

12.2V 12.2V 16 15 14 VDD Vcc ALS

0V 13 ALO

9.1V 12 AHS

9.1V 11 AHO

D R535 10 A G 9.1V

UNDER VOLTAGE DRIVER L.SHIFT /LATCH TURN- ON DELAY DRIV. DRIVER DRIVER

Q502
S 9.1V D 9.1V

R548 10 B

G 0V

Q504
S

CHARGE PUMP

D TURN- ON DELAY D BHB 1 11.6V 2 12.2V HEN 3 12.2V DIS Vss 4 OUT 5 6 6V IN+ 7 1.5V INHDSEL LDSEL AHB 8 9 10 5.2V 5.2V 11.6V C C543 2200P C542 2200P R550 300K R549 300K A B R538 10 G 9.1V

18.9V

Q503
S 9.1V D 9.1V

R552 10

B

A

G 0V

Q505
S

Q502- 505 RSQZAS500P12
POWER AMP R545 4.7K

18.9V

R544 20K C535 220P R546 27K

R551 9.1K R547 2.2K C544 220P A

ZD501 MTZJ5R6C

6V 5 6

6V 7

6V 8

12.2V R540 47K

B R541 47K

A R542 4.7K C532 2200P R537 4.7K C540 120P R543 4.7K C503 25V10

Q508 2SC945P1TA
MUTING

C539 2200P 4 3 6V 2 6V 1 12.2V R539 4.7K

Q510 RSQZAS500P- 5
MUTING R554 47K 0V 0V 6V 0V R557 10K C553 0.1

IC505 RSIZAS500P- 1
PRE AMP

B 6V C536 16V33 R533 47K R531 6.8K R532 1K R534 2.2K 8 9 6.3V 10 6.3V 11 GND 12 6V 13 6V 1.5V 14

Q508

Q510

IC504 RSIZAS500P- 2
PRE AMP/ LEVEL DET.

C537 0.1

R556 10K

R501 22K 0V 0V

Vcc 7 1.3V 6 9.3V 5 1.5V 4 12.2V 3 6V 2 6V 1 6V

Q507 2SC945P1TA
MUTING R504 22K C504 25V10 R505 10K C501 50V2.2 R502 10K R503 1K C502 0.018 D508 R506 300K D507

Q506 2SC945P1TA
5 4 3 2 1 OVER LOAD DET.

0V 0V

R507 10K C505 25V10

12.2V R508 10K

R526 22K

D507,508 RSQZAS500P- 8

R527 6.8K

6V

CN401

12.2V

C530 25V47

6V C531 0.1 C534 0.1

Only Serial Number Suffix "A".
:POSITIVE VOLTAGE LINE :SOURCE SIGNAL LINE

Only Serial Number Suffix "B".
A C552 0.1 C550 10 C547 0.1 C556 0.01 L502 L503 CN502 1 C577 100V 2.2 2 C555 0.01 C548 0.1

L501 B

SP1 SPEAKER

F CIRCUIT
S901 (POWER)

POWER SW

CN906 C930 1000P

1 2 3

C525 25V220

C528 25V220

18.9V 12.2V C509 0.1 C524 0.22

Q509 2SC945P1TA
REGULATOR 6V 12.2V

D503 RSQZAS500P- 7

C529 0.22

SP2 SPEAKER

D CIRCUIT
RB403 LD351 RSQZAS500P15 (POWER) 1 2 3

LED

E CIRCUIT
1 2 3 CN403

CONNECTOR

0V

IC502 RSIZAS500P- 7
REGULATOR CN904 3 2 1

OUT R525 10K C533 25V10 C507 25V47 R536 12K C508 0.1 3

GND

2 12.2V C518 25V47

IN 1 18.5V C516 0.1

R524 4.7 C522 25V3300 C523 0.1

CN501 1 2

3 2 1

CN404

CN905

1 2 3

C POWER CIRCUIT
2 1 CN902 D901 RSQZAS500P11 L902 3 C904 35V3300 C903 2200P L903 4 TR901 1 R901 7W22K C901 0.01 12 8 AC 116V 3 6 5 AC86V D903 7 D903 RSQZAS500P- 3 R911 33 - 0.2V AC3V CONTROL C907 0.1 R908 3.3K 1 4 1 18.9V R905 15 C908 25V2200 18.9V C910 0.1 R910 1W1K C916 0.1 14 10 13 9 R904 2W27

L901

D911,913 RSQZAS500P- 1 D911

D902 RSQZAS500P- 9 D913

D902

1

2

IC901 RSIZAS500P- 4
SWITCHING REGULATOR D

3 R907 33

S PWM

2

G01

IC902 RSIZAS500P- 6
FEED BACK C909 R909 25V100 33 3 - 0.3V ZD901 MTZJ18C 2 18V

G02

G03

C911 0.1

G04 C905 C902 200V470 200V470 R902 1W100K C913 1000P C917 1000P C927 1000P C928 1000P C915 0.1

BR901 RSQZAS500P10 AC

NTC1

F901 T4A 4 R913 2W1M ZNR1 C929 0.1

CN901

R903 1W100K

L

4 L904

3 C906 0.47 L905

3

AC IN (120V 60Hz)

AC

2

1

1

2 N