KENWOOD SW3HT Service Manual

Cover page of KENWOOD SW3HT Service Manual

Service Manual for KENWOOD SW3HT, downloadable as a PDF file.

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SPECIFICATIONS
Type .......................................... Subwoofer system with built-in
amplifier
[Amplifier]
100 watts RMS, at 4 W, from 20 Hz to 200 Hz with no more
than 0.09 % total harmonic distortion.
Phase Switching ..................... NORMAL, REVERSE
Input Sensitivity & Input Impedance
RCA-type pin-plug jack ....... 45 mV (12 kW)
Push-type terminals ............ 0.7 V (5 kW)
Supply Voltage ....................... U.S.A. and Canada
AC 120 V
Other countries AC 110 V - 120 V/ AC 220 V - 240 V
Rated Power Consumption .. 110 W
[Speaker]
Enclosure ................................. Bass-Reflex,
Floor
Standing
Type
Speaker Units ......................... 250 mm Cone type
Nominal Impedance .............. 4 W
Dimensions .............................. Width : 300 mm (11-13/16")
Height : 420 mm (16-9/16")
Depth : 444 mm (17-1/2")
Net Weight .............................. 16 kg (35.3 lb)
Supplied Accessories ............ Pin-plug cord
× 1
.................................................... Pads
(
× 4)
NOTE: DO NOT REMOVE THE GRILLE.
Note:
KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice.
LINE
PHASE
LEVEL CONTROL
REVERSE
NORMAL
FROM AMPLIFIER
+­­+
+­­+
TO SPEAKERS
POWER
ON
RL
R
L
INPUT
OFF
SERIAL NO.
Level control knob
(K29-0576-08)
POWER SUBWOOFER
SW-3HT
SERVICE MANUAL
© 1997-11/B51-5394-00 (K/K) 1396
* Refer to parts list on page 7.
LED
(B30-1822-08)
AC cord *
(E30-)
Cloth frame assy
(B06-1144-08)
Badge
(B43-0847-04)
Slide switch voltage *
(S31-)
Slide switch phase
(S62-0207-08)
Power knob (REAR)
(K29-0579-08)
Speaker terminal
(E21-0279-08)
Cord bushing
(J42-0234-08)
SW-3HT COVER 2P ( 98.4.25 8:27 PM y[W 2
background image
SPECIFICATIONS
Type .......................................... Subwoofer system with built-in
amplifier
[Amplifier]
100 watts RMS, at 4 W, from 20 Hz to 200 Hz with no more
than 0.09 % total harmonic distortion.
Phase Switching ..................... NORMAL, REVERSE
Input Sensitivity & Input Impedance
RCA-type pin-plug jack ....... 45 mV (12 kW)
Push-type terminals ............ 0.7 V (5 kW)
Supply Voltage ....................... U.S.A. and Canada
AC 120 V
Other countries AC 110 V - 120 V/ AC 220 V - 240 V
Rated Power Consumption .. 110 W
[Speaker]
Enclosure ................................. Bass-Reflex,
Floor
Standing
Type
Speaker Units ......................... 250 mm Cone type
Nominal Impedance .............. 4 W
Dimensions .............................. Width : 300 mm (11-13/16")
Height : 420 mm (16-9/16")
Depth : 444 mm (17-1/2")
Net Weight .............................. 16 kg (35.3 lb)
Supplied Accessories ............ Pin-plug cord
× 1
.................................................... Pads
(
× 4)
NOTE: DO NOT REMOVE THE GRILLE.
Note:
KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice.
LINE
PHASE
LEVEL CONTROL
REVERSE
NORMAL
FROM AMPLIFIER
+­­+
+­­+
TO SPEAKERS
POWER
ON
RL
R
L
INPUT
OFF
SERIAL NO.
Level control knob
(K29-0576-08)
POWER SUBWOOFER
SW-3HT
SERVICE MANUAL
© 1997-11/B51-5394-00 (K/K) 1396
* Refer to parts list on page 7.
LED
(B30-1822-08)
AC cord *
(E30-)
Cloth frame assy
(B06-1144-08)
Badge
(B43-0847-04)
Slide switch voltage *
(S31-)
Slide switch phase
(S62-0207-08)
Power knob (REAR)
(K29-0579-08)
Speaker terminal
(E21-0279-08)
Cord bushing
(J42-0234-08)
SW-3HT COVER 2P ( 98.4.25 8:27 PM y[W 2
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SW-3HT
2
CONTENTS / ADJUSTMENT
SPECIFICATIONS .........................................Top cover
CONTENTS / ADJUSTMENT ......................................2
PC BOARD ..................................................................3
SCHEMATIC DIAGRAM ..............................................4
EXPLODED VIEW .......................................................6
PARTS LIST.................................................................7
CONTENTS
ADJUSTMENT
No.
ITEM
INPUT
SETTINGS
OUTPUT
SETTINGS
AMPLIFIER
SETTINGS
ALIGNMENT
POINTS
ALIGN FOR
FIG.
Unless otherwise specified, the individual switches should be set as following :
POWER : ON
NO SIGNAL INPUT
1
IDLE CURRENT
­
Connect a DC
voltmeter to
R611
VOLUME : 0
VR601
5 mV
(a)
Dc voltmeter
5 mV
R611
(a)
SW-3HT COVER 2P ( 98.4.25 8:27 PM y[W 3
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A
C
E
BD
2
1
3
5
7
4
6
PC BOARD(Component side view)
Refer to the schematic diagram for the value of resistors and capacitors.
3
SW-3HT COVER 2P ( 98.4.25 8:27 PM y[W 6
background image
1
AC
E
B
D
3
5
7
2
4
6
POWER AMP (210-7145-110)
INPUT/FILTER (210-7145-130)
GND
-V
R220 1K
4
8
4
8
12K
R113
4.7K
+15V
-15V
-15V
-15V
+15V
+15V
-15V
+15V
-15V
-15V
-15V
+15V
-15V
+15V
REV
NOR
C108
100P
C101
100P
C103
R210
+
5.6K
R217
1.5K
R215
R214
47K
5
6
+
7
-
+
C216
1u50
R213
100
C214
100P
0.1
C215
18K
R211
18K
R212
C211
0.047
0.12
C212
C213
0.027
1
+
3
-
2
+15V
R206
12K
R208
6.8K
R209
330K
C204
0.047
R207
330K
C207
0.047
-
7
6
+
5
0.18
C208
0.18
C205
0.18
C206
0.18
C203
100
R205
R201
220K
R204
47K
R203
47K
47K
R202
C202
100P
C201
R435
270
VR201
100K(B)
R219
47K
1K
R218
1u50
C219
SW201
1K
R437
2
1
10K
R440
4.7K
-15V
-15V
-15V
-15V
+15V
+15V
+15V
+15V
+5V
R112
5.6K
R111
22K
1
+
3
-
2
R110
5.6K
1.5K
R427
-
+
7
4
8
6
5
R105
100K
100K
R108
100K
R106
100K
R107
R101
R103
1/2W
1.2K
-15V
C226
220P
C229
220P
220P
C228
S IN
GND
S.DET
-V
GND
+V
GND
GND
AC-H2
AC-H1
DET
GND
SIN
-V
GND
+V
+V
+V
-V
1W
180
R851
1W
1W
1
3
2
1/2W
R871
4.7
47u25
C875
+
47u25
+
C876
100u25
8.2K
R109
C102
220P
+
33u16
C104
220P
C106
22P
0.01
1
3
2
+
-
+
C107
47u16
0.01
C105
0.01
C802
C801
0.01
R801
R802
4.7
4.7
AC-L2
AC-L1
AC-H2
AC-H1
1
2
3
2
3
1
2
1
R872
4.7
9
8
7
5
6
4
3
2
1
R875
R876
470
C874
220P
1W
1W
1
2
3
R115
1K
R104
1.2K
R102
4.7K
1
2
3
4
5
6
7
8
+
C871
+
C872
100u25
1K
R873
R874
1K
220P
C873
470
JK102
+
-
-
+
+
-
-
+
IC202
(1/2)
IC202
(2/2)
D401
Q403
(1/2)
IC101
(2/2)
IC101
(1/2)
IC201
IC201
(2/2)
ZD101
ZD102
W803
STAND-BY
MTZ16B
:
ZD871,872
MTZJ5.1B
:
ZD815
: MTZJ30B
ZD101,102
: D3SBA20
D801
1SR139-100
:
D651-653,811-814,851
B30-1822-08
:
D401
D814
CN601
: NJM4558L
IC101,201,202
: uPC1298V
IC601
: uPC1237HA
IC651
: NJM2072D
IC851
Q403,651,851
: 2SC1815GR
: 2SA1015GR
Q652
: 2SC1846
Q601
: 2SC5198
Q602
: 2SA1941(R)
Q603
: 2SB1565(E,F)
Q871
: 2SD2394F
Q872
W601
Q871
Q872
ON/OFF
POWER
CN803
D851
CN801
CN802
D811
D812
D813
RY851
Lch
JK101
Lch
Rch
Lch
Rch
W802
ZD872
ZD871
2SA1015GR
2SC1846
2SB1565
UPC1237HA
UPC1298V
NJM4558L
CAUTION: For continued safety, replace safety critical com-
ponents 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. The measurement value may
vary depending on the measuring instruments used or on
the product.
SW-3HT COVER 2P ( 98.4.25 8:27 PM y[W 7
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-47.5V
47.4V
-47.5V
47.1V
-47.5V
47.4V
47.4V
0.6V
3.5V
2.2V
0V
47.1V
0V
41.0V
+2.1V
0V
0V
0V
-0.3V
-1.3V
-0.7V
0.5V
0V
-0.5V
0.5V
0.3V
0V
5.2V
0.2V
0.7V
(Y) TYPE ONLY
(210-7145-150)
(210-7145-160)
(210-7145-140)
TRANSFORMER
(210-7145-120)
IC601
IC851
IC651
BLU
RED
R615
BLK
RED
WHT
BLU
S5
S4
S3
S2
120V
240V
S7
S6
21
C901
4700P
1
2
C902
0.047
(Y)
(K,P)
C903
0.047
T1.6A
250V
F901
: AC120V 60Hz
: AC110-120V/220-240V~
50/60Hz
AC220-
F904
S3
S4
S5
T1
S2
S1
TH
1
AC-H1
AC-H1
GND
GND
AC-H2
2
3
4
5
F902
F903
AC-L1
LGND
AC-L2
7
8
9
AC-H2
6
AC110-
F902,903
T800mA 250V
T800mAL 250V
P
CANADA
F901
T3.15A 125V
DESTINATION
COUNTRY
U.S.A.
K
ABB.
T1.6AL 250V
PX
Y
C813
C612
0.047
R852
1K
82K
220K
1K
~
~
1K
VR601
0.7V
2.3V
0V
C852
2.0V
0.2V
0.5V
0V
+VCC
+VCC
-VCC
+VCC
-VCC
-V
8
VCC
DRIVER
RELAY
7
6
VCC ON
OVER LOAD
DET.
AC OFF
MUTE
5
4
DET.
OFFSET
VOL.DET.
2
3
LATCH SW
AUTO RECOVERY
FLIP-
FLOP
1
Q602,603
+
R662
10K
2.2u50
C652
1K
R661
R663
820
R614
10K
4.7K
0.047
C610
10
1W
R612
R613
R660
R664
470K
C609
100P
100P
C608
R611
0.22
+
C611
1u50
2.7
R609
1/4W
1/4W
R607 10
C607
10 1/4W
R608
+
100u63
11
1K
R606
100P
C605
R605
2.7K
22K
+
C651
4.7u50
R651
R658
12K
56K
R655
R659
22u16
+
C656
C655
47u10
68K
R657
R654
22K
+
C659
22u16
R653
22K
R652
33K
C660
+
2.7K
1u50
R656
47K
10000u
C805
+
+
C806
10000u
0.01
C804
C803
0.01
R610
1/4W
2.7
10
9
+
C606
100u63
R604
16K
8
7
6
12
13
14
1
2
3
5
4
C604
100P
R602
47K
C602
100P
C601
10u25
+
C603
100u25
+
R603
1K
R601
+
C851
1u50
10K
R854
+
100u16
1W
R811
820
+
C853
2200u16
1000P
2.7K
R855
R853
2.7K
+
+
2200u25
C812
C811
2200u25
8
7
6
5
4
3
2
1
1
2
3
63
63
5W
x
2
1W
-
+
SP+
SP+
GND
+
-
AC IN
AC SW
CN902B
CN901
SW901
SW902
W801
D801
FINAL TR.
DETECT
DC
PRE
DRIVE
IC
IDLE
ADJ.
DRIVE
RELAY
LIMIT
Q651
D652
Q603
Q602
D653
RY601
ON/OFF
SP
Q601
D651
Q652
RELAY
ON/OFF
D815
Q851
SP
PROTECT IC
WOOFER
SPK1
CN804
X
X
X
X
SW-3HT
FH
J
G
I
Y19-3990-10
SW-3HT COVER 2P ( 98.4.25 8:27 PM y[W 8

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