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POWERED SUBWOOFER
SW-38HT/-38HT-B
SERVICE MANUAL
© 2004-6 PRINTED IN KOREA B51-5905-00 (K/K) 876
Woofer (T10-1253-05) RCA (E63-0223-08) Knob (K29-0596-08)
100W POWERED SUBWOOFER
POWER ON
Cloth frame * (B06-)
AC Power cord bushing (J42-0261-08)
AC Power cord * (E30-)
Switch (S66-0206-08)
SPECIFICATIONS
Type ...................... Subwoofer system with built-in amplifier
[Amplifier]
Dynamic Power ................................................. 100 W (6) (For U.S.A. and Canada) Rated Output Power (FTC) 75 W RMS, at 6 100 Hz, with no more than 0.7 % T .H.D. Input Sensitivity & Input Impedance ........ 300 mV (37 k) Rated Power Consumption ........................................ 70 W Frequency Responce................................... 35 Hz ~ 200 Hz (For other countries) Rated Output Power ....................... 75 W RMS (100 Hz,6 ) Input Sensitivity & Input Impedance ........ 300 mV (37 k) Rated Power Consumption ........................................ 70 W Frequency Responce................................... 35 Hz ~ 200 Hz
[Speaker]
Enclosure ........................ Bass-Reflex, Floor Standing Type Speaker Units ............................160 mm (6-1/2") Cone type Nominal Impedance ....................................................... 6 Dimensions Width ................................................... : 210 mm (8-1/4") Height ................................................ : 400 mm (15-3/4") Depth ................................................. : 350 mm (13-3/4") Net W eight .................................................... 9.2 kg (20.3 lb) Supplied accessories Pin-plug cord .................................................................. 1 NOTE:THE GRILLE CANNOT BE REMOVED .
Notes: 1. Kenwood follows a policy of continuous advancements in development. For this reason, specifications may be changed without notice. 2. Full performance may not be exhibited in extremely cold locations (below 0 deg . C).
70%
SW-38HT
ACCESSORIES
Accessories
Pin-plug cord (1) (E30-7068-05) AC plug adapter(1) (E03-0260-05)
How to Replace Woofer
Cut the cloth of cloth frame ass'y and replace it with new one after mount the speaker.
2
A
B
C
D
E
PC BOARD (Component side view)
1
I/O
VR1 R4 8 5
LED
2
2
D2 D1
C5
IC1
1 4 C4 C3 R3 C2 C6 4 JW2 R5 8 5 1 3 6 C12 C11 1 5 1 BLK P2 C10 4 C9
1
CN5
JW19 JW18 C1
F2
R2 R1 L1
D15
JW27
JW1
R6
C7
3
JK1
IC2
MAIN
JW16
R7
1
Q11
JW20 D11 E C
Q9
E C
C8
C24
Q12 E C
R45
4
E Q8 C R40
D10
R41 R38
R34 C25
C26
CN2
R50 R51 JW22 R49 JW26 JW24 Q10 R47 E C
C28 JW23 C27
R39
D9
1 R17 4 JW13
R36
R37
R43
R44 R42
E C Q7
R8
D4
8
R23 JW15 5
D8
R35
R9
POWER SUPPLY
CN7
JW21
C19
JW25
D12
IC3
4 R19 R18 10 BRN T1 P1
C30
R48
R16 CE
1 R20 R21 JW14
C23
JW11 R13 C13 R11 JW7 R10 R15
5
JW12 3 C31 1 C32 C29 C22
1
JW6
D13
CN4
JW10
JW9
D17
JW8
C15
D14
D16
Q1
D3
2
F1
C17
JW4
C18
R21
JW3
RL1
IC4
R46
15
14
2
CN10
C33
R14
6
JW5
JW 0 1
R33 R52
C16 C E
E C JW17 R28
Q4
Q5 E C Q6 E C CN6 1 2
2
1
R27 R26 R30 C21 R29 E
1
D5
CN3
JW27 C14
C20
CN9
4
Q2
R32
R24 C
R31 R25
Q3
D7 D6
7
CN1
Refer to the schematic diagram for the value of resistors and capacitors.
3
A
B
C
D
E
SW-38HT
I/O
D1
+B C3 1000P R3 47K 2 100P C4 3 4 8 1 C5 10u50 +
JK1
L1
R5 10K
R6
R2 22K
SUB-IN
R1 39K
C2 22u25 +
C6
VR1 10K(B) R4 1K 6 5 7
C7
5 6
7
R7 22K
R8 22K C9 0.033
3 2
8
1
C12 47u25 +
D2
B
B
C11 47u25 +
IC1 (1/2)
4 IC2
C10 10u50 +
+B
1
IC2 (2/2)
C8 0.068
+B
CN1
1 2 3
IC1 (2/2)
(1/2)
4
MAIN IC4
R18 R17 10K Q1 R16 100K R19 C19 4.7u50 + 390 22K R20 1K 2 3 8 1 R21 10K 6 5
2
+B
R23 10K 1 11 10 12 2 13 7 C15 R13 47u50 390 C13 C14 47u50 + +B R10 22K 1K 1/4W R12 +B R14 47P 3.9 2W B 10 9 B RL1 0.047 C18 14 15 3 5 6 8 4 7 0.047 9
4 IC3 B
(1/2) D3
C17
C16
CN2
1 2 3 4
R9 1K R15 2.2K R27 R30 1K 10K B
R11 22K
Q2
R32 22K R26 47K R25 47K
R24 47K
R31
10K
3
+B
Q5
100K
Q4
R28 4.7K
D6
D7
C20 47u25 + R29 10K
C21 10u50 + R52
Q3
Q6
R33 68
D5
1
IC3 (2/2)
D4
CN3
1 2
LED
CN5
2 1
CN6
2 4.7K R37 R39 22K R36 R35 22K 10 R34 33K 9 1 +B B
Q10
C26 R48 47u25 2.2K + 1/4W
D15
C27 47u25 + R50 10K
R46 470 2W +B
Q8
22K
D14
C29 3300u50 +
R40 22K
D9
CN4
C32 C31 0.047 0.047 1 2 3
D12
C25 C24 1u50 10u50 + + R42 22K
B
R43
22K
4
C23 10u50
C22 10u50
R38 100K
Q9
D11
R41 22K
D10 D8
Q7
Q11
C28 47u25 + R51 9.1K 1/4W R49 2.2K R47 470 2W
R44 47K
+B
Q12 IC1-3 : TL072 IC4 : TDA7293V Q1,3,4,6,8,9,11 : 2N3906 Q2,7 : 2N3904 Q5 : 2N5401 Q10 : MPSW06 Q12 : MPSW56 D1-9,11,13,16,17 : 1N4148 D10 : 1N5240B D12 : 1N5246B D14 : KBU4D SIGNAL LINE GND LINE B LINE B LINE
6 7 8 9 10
B
+B
B
SW1
POWER SW P1
POWER SUPPLY
1 2 3
CN7
P2
C33 0.01
F1
5
BLK WHT
CN10
1 2 (K,P) : AC120V 60Hz (Y) : AC110-120V/220-240V~ 50/60Hz (E) : AC230V~ 50Hz (X) : AC240V~ 50Hz (J) : AC100V~ 50/60Hz DESTINATION F1 JW 0 COUNTRY ABB. U.S.A. K T2A NO CANADA P EUROPE E T1.25AL NO Y PX T2AL NO AUSTRALIA X T1.25AL YES JAPAN J T2.5A NO
T2 5
T1 5
4 6 3 2 1 7 8 9 10
4
CN9
1 2 3 4 110-120V
F2 T1.25AL 250V
3
S1
220-240V
B
2 1
6
SW-38HT K,P C6,7 0.068 R6 270K
EXYJ 0.68 18K
USED (K) (P) (E) (X) TYPE
JW 0
+B
USED (Y) TYPE
D16
D17
R45 6.8K
D13
C30 3300u50 +
SW-38HT
7
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list). indicates safety critical components. For continued protection against risk of fire, replace only with same type and rating fuse(s). To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
The DC voltage is an actual reading measured with a high impedance type voltmeter with no signal input. The measurement value may vary depending on the measuring instruments used or on the product.
4
SW-38HT
EXPLODED VIEW
A B
702
616
605
700 712
1
706
LED PCB
Bx2 751
Cx2
Cx2
SP1
714
2
707 F Gx2
604
F F 711 Fx2 MAIN PCB 752 753 711 711 VOLUME I/O PCB 709
VR1
C C
JK1
INPUT Hx2 754 713 POWER SUPLY PCB E C Bx2 Cx2 B C C Bx2 715 708
3
T1 or T2
610
Dx2 Dx2 C C Cx2 C
B C D E F G H
3x10(BLK) 4x16(BLK) 4x10(BLK) 3x6(BLK) 3x10(BLK) 3x14(BLK) N4
Hx2
SW1
: N44-3010-45 : N44-4016-45 : N44-4010-45 : N86-3006-45 : N86-3010-45 : N86-3014-45 : N10-2040-46
603 601 SW-38HT
Parts with exploded numbers larger than 700 are not supplied.
5
SW-38HT
New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Ref. No Add- New ress Parts Parts No. Description Destination
1
Remarks
New Parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Ref. No T2 T2 T1/T2 R14 R46,47 VR1 RL1 S1 D1-9 D10 D11 D12 D13 D14 D16,17 IC1-3 IC4 Q1 Q2 Q3,4 Q5 Q6 Q7 Q8,9 Q10 Q11 Q12 Add- New ress Parts 3B 3B 3B Parts No. L07-3047-05 L07-3048-05 L07-3049-05 RS14GB3D3R9J RS14GB3D471J R31-0432-08 S76-0218-08 S62-0219-08 1N4148 1N5240B 1N4148 1N5246B 1N4148 KBU4D 1N4148 TL072 TDA7293V 2N3906 2N3904 2N3906 2N5401 2N3906 2N3904 2N3906 MPSW06 2N3906 MPSW56 Description TRANSFORMER 120326-1228A17310 TRANSFORMER 230326-1328A17310 TRANSFORMER 115326-1528A17310 FL-PROOF RS 3.9 J 2W FL-PROOF RS 470 J 2W POT1/B10K/RV16A371-1B14RV16AE RELAY OMRON/SPS372-1G5PA1DC24 SWITCH VOLT VEV327-VEV1261BCT DIODE IN4148 D0334-31N4148 DIODE-Z/1N5240B334-41N5240B DIODE IN4148 D0334-31N4148 DIODE-Z/1N5246B334-41N5246B DIODE IN4148 D0334-31N4148 BRIDGE DIODE KB331-2KBU4D DIODE IN4148 D0334-31N4148 IC/TL072/DIP8 331-1TL072 IC ST TDA7293V 331-A7293V-00 TR 2N3906 PNP T384-62N3906 TR 2N3904 NPN T383-62N3904 TR 2N3906 PNP T384-62N3906 TR2N5401PNPT384-2N5401-00 TR2N3906PNPT384-62N3906 TR 2N3904 NPN T383-62N3904 TR 2N3906 PNP T384-62N3906 TR/T0226/MPSW06383-9MPSW06 TR 2N3906 PNP T384-62N3906 TRANS/PNP/MPSW5384-9MPSW56 Y Destination KP E Y/X
2
Remarks
SW-38HT Y=YS+YB, YS=SW-38HT, YB=SW-38HT-B
601 601 601 601 603 604 604 605 610 616 SP1 SW1 B61-1221-00 B61-1227-00 H10-8443-08 H10-8444-08 H51-2069-08 H51-2070-09 H51-2071-09 E30-7084-05 E30-7085-05 E30-7086-05 E30-7087-05 J42-0261-08 B06-1790-08 B06-1802-08 E30-7068-05 K29-0596-08 E03-0260-05 T10-1253-05 S66-0206-08 INSTRUCTION MAN640-SW38HT-00 INSTRUCTION MAN640-SW38HY-00 POLYFOAM TOP SW720-TSW38T-00 POLYFOAM BTM SW720-BSW38T-00 CARTON SW38HT K730-0SW38H-10 CARTON SW38HT K730-0S38HY-10 CARTON SW38HT K730-0SW38BY-10 AC POWER CORD (316-KP3555-01 AC CORD 2M EU 316-0E3555-00 AC CORD 2M 115/316-0M3555-00 AC CORD 2M AS 316-0X3555-00 BUSHING 5RF-4 P408-005RF4-00 CLOTH FRAME ASSK201-SW380HT-10 CLOTH FRAME ASSK201-SW380HB-10 CORD RCA PIN SL394-0SL307-00 KNOB SW38HT K218-SW3801B-00 AC PLUG ADAPTER344-0JT475-00 WOOFER SW-38HT 300-K038HT1600 SW1/ROCKER/OR-L327-0RL17DBB2 KPEX Y KPEX YS YB K E Y X KPEXYS YB
3B 3B 3B 3B 3B 2A 2A 1A 3B 1A 2A 3B
Y
PARTS LIST
AMP
D15 C2 C3 C4 C5 C6,7 C6,7 C8 C9 C10 C11,12 C13 C14 C15 C16 C17,18 C19 C20 C21 C22,23 C24 C25 C26-28 C29,30 C31,32 C33 JK1 F1 F1 F1 F2 B30-1848-08 CE04KW1E220M CK45FB1H102K CK45FB1H101K CE04KW1H100M CK45FB1H684K CK45FB1H683K CK45FB1H683K CK45FB1H333K CE04KW1H100M CE04KW1E470M CC45FCH1H470J CE04KW1H470M CE04BP1H470M C91-0217-05 CK45FB1H473K CE04KW1H4R7M CE04KW1E470M CE04KW1H100M CE04BP1H100M CE04KW1H100M CE04KW1H010M CE04KW1E470M CE04KW1H332M CK45FB2A473M C90-6583-05 E63-0223-08 F50-0250-05 F50-0230-05 F50-0228-05 F50-0228-05 LED L-7113CGCK 335-151102-00 ELECTRO CERAMIC CERAMIC ELECTRO CERAMIC CERAMIC CERAMIC CERAMIC ELECTRO ELECTRO 22UF 1000PF 100PF 10UF 0.68UF 0.068UF 0.068UF 0.033UF 10UF 47UF 25WV K K 50WV K K K K 50WV 25WV
EXY KP
CERAMIC 47PF J ELECTRO 47UF 50WV NP-ELEC 47UF 50WV M.POLYESTER 357-11051JJ13 CERAMIC 0.047UF K ELECTRO ELECTRO ELECTRO NP-ELEC ELECTRO 4.7UF 47UF 10UF 10UF 10UF 50WV 25WV 50WV 50WV 50WV
ELECTRO 1.0UF 50WV ELECTRO 47UF 25WV ELECTRO 3300UF 50WV CERAMIC 0.047UF M CAP MP/10n/250V357-51032FM03 RCA/1P/RJ-1081-399-RRJ10810103 FUSE 250/2A 51M365-312200102 FUSE 250V/2A 50365-312200101 FUSE 250V/1.25A365-312125101 FUSE 250V/1.25A365-312125101 KP Y EX Y L : Scandinavia Y : PX(Far East,Hawaii) Y : AAFES(Europe) K : USA T : England X : Australia P : Canada E : Europe Q : Russia R : Mexico G : Germany H : Korea C : China V : China(Shanghai) M : Other Areas I : Malaysia indicates safety critical components .
L : Scandinavia Y : PX(Far East,Hawaii) Y : AAFES(Europe)
K : USA T : England X : Australia
P : Canada E : Europe Q : Russia
R : Mexico G : Germany H : Korea
C : China V : China(Shanghai) M : Other Areas
I : Malaysia indicates safety critical components .