service manual sw090freeservicemanuals.info/en/servicemanuals/download/... · 2020. 11. 25. ·...
TRANSCRIPT
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ServiceServiceServiceServiceService
Technical Specifications
Mains Voltage : 120V
Mains Frequency : 60Hz
Output Power (55Hz, 500mV, 10% THD) : 40W at 4 ohm load
Input Sensitivity : < 500mV
S/N Ratio (80Hz, 500mV) : > 60dB*
Minimum Volume Hum & Noise : < 3mV
Frequency Response (-3dB) Low :
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2
Dismantling the Front Assembly1. Place the Subwoofer Box upside down and use a screw
driver (minus type) to force open the front assembly from
the rear as shown in the picture 1.
2. To service/replace the rotary potmeter on the front, the
Port Edge (pos. 6) which is glued to the Front Cabinet
(pos. 2) must be forced open.
Caution: Do not break the bundle of wires to the front.
Dismantling the Rear Assembly1. Unscrew 10 screws A (see picture 3) to pull out the pc
board assembly. The assembly cannot be fully pulled out
until the connector plug from the rotary potmeter is
unplugged.
Caution: Do not break the bundle of wires to the front .
Hint: Simulate the action of the rotary potmeter with
2 resistors as potential divider between pins 1
to 3 of connector CN401 during servicing.
Dismantling the Subwoofer speaker1. Loosen the Speaker Grille (pos. 29) as shown in the
picture 2.
2. Unscrew 4 screws B (see picture 3) and disconnect the
speaker terminals to remove the Subwoofer speaker.
Picture 1
Picture 2
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3
Service Position
Picture 3
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WIRING DIAGRAM
4
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VR401
TP403
TP402
RB401
LD401
RB402
LVA0031C011
LVA0031C021
TP401
1
1
P40
1
VR
401
RB
401
LD40
1
94V
007
V0
T4A/250V
F901
FOR CONTINUED PROTECTION AGAINST RISKOF FIRE REPLACE WITH SAME TYPE FUSE
!
UT
ILIS
ER
U
N F
US
IBLE
D
E
RE
CH
AN
GE
DE
ME
ME
TY
PE
WARNING : AV
IS :
F902C913
J104D90
4
C90
4C
307
C30
6C
912
C91
0
C41
1C41
3 R41
1C40
3C
404 C
407
R90
2 C90
8C41
0C
509
C50
1J5
01IC
502
R41
0 R37
0R
371
R37
2
R36
6
R36
7
R36
9
C51
0
R52
0
R51
6
J502
R51
4
R37
3
J109
R527
C303
SW501
Q504
R53
2
R52
9
R53
1R
L501
D50
1 EA
ST
WA
YLV
A03
64-0
01Q50
1C
N50
1R
525
ZD
901
C91
1
SW301R302
JK301 C301
R30
3
RB
301
R30
1
Q505
C51
6
C52
0C
521
Q50
2
R52
8
07V
094
V0
SK
AB
CE
C90
9R
524
Q35
2R
526
C51
2
R53
0
C51
3
J506
C51
4
R51
9
R53
3
R51
8
C51
8C
519
J504
J505
R515
R522
R521
R523
D503 C52
2
C51
1
Q50
3R406
C414
C406
R403
C517
R404
R405
C412
C405
R407
J503 C907
J103
J106R368
R901
CN401
C90
6
R30
4
R40
1
CN301
IC401
1
C304
ZD902
C305
C401
C415R402
C40
2
C90
3
C90
2
C90
1
D90
3
D90
2
D90
1
C90
5C
N90
1
J105
T4A/250V
1
SK
1
G
C51
5
COMPONENT LAYOUT
5
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ELECTRICAL PARTS LIST
F901 482207034002 ! Fuse T4A 250V
F902 482207034002 ! Fuse T4A 250V
JK301 482226741238 RCA Jack 1P
RL501 996500009708 Relay GJ-SH-112DM 320 OHM
SW301 482227711821 Slide Switch
VR401 482210111919 Control Rotary 50kB
CAPACITORS
C301 482212233293 100pF 5% 50V
C303 482212421913 1µF 20% 63VC304 482212421913 1µF 20% 63VC305 482212421913 1µF 20% 63VC306 996500007093 0,22µF 5% 100VC307 996500007093 0,22µF 5% 100VC401 482212233293 100pF 5% 50V
C402 482212141935 12nF 5% 250V
C403 532212142662 68nF 5% 250V
C404 532212142662 68nF 5% 250V
C405 532212142489 33nF 5% 250V
C406 482212142077 6,8nF 10% 400V
C407 482212421913 1µF 20% 63VC410 482212423056 47µF 20% 16VC411 482212423056 47µF 20% 16VC412 482212230103 22nF 80% 63V
C413 482212230103 22nF 80% 63V
C414 996500003366 0,22µF +80/-20% 50VC415 996500003366 0,22µF +80/-20% 50VC501 482212422652 2,2µF 20% 50VC509 482212233293 100pF 5% 50V
C510 532212232331 1nF 10% 100V
C511 532212441945 22µF 20% 35VC512 532212441945 22µF 20% 35VC513 532212441945 22µF 20% 35VC514 482212440248 10µF 20% 63VC515 482212440248 10µF 20% 63VC516 532212142578 100nF 5% 250V
C517 996500007093 0,22µF 5% 100VC518 482212440207 100µF 20% 25VC519 482212440207 100µF 20% 25VC520 482212440248 10µF 20% 63VC521 482212440433 47µF 20% 25VC522 482212440433 47µF 20% 25VC901 482212230103 22nF 80% 63V
C902 482212230103 22nF 80% 63V
C903 482212230103 22nF 80% 63V
C904 482212230103 22nF 80% 63V
C905 482212442402 3300µF 20% 35VC906 482212442402 3300µF 20% 35VC907 203855400065 100nF +80/-20% 50V
C908 203855400065 100nF +80/-20% 50V
C909 482212440207 100µF 20% 25VC910 482212440207 100µF 20% 25VC911 203855400065 100nF +80/-20% 50V
C912 203855400065 100nF +80/-20% 50V
C913 203855400065 100nF +80/-20% 50V
RESISTORS
R301 482205021003 10k 1% 0,6W
R302 482205025602 5k6 1% 0,6W
R303 482205021003 10k 1% 0,6W
R304 482205026202 6k2 1% 0,6W
R366 482205021003 10k 1% 0,6W
R367 482205021001 100R 1% 0,6W
R368 482205021003 10k 1% 0,6W
R369 482205021502 1k5 1% 0,6W
R370 482205021502 1k5 1% 0,6W
R371 482205022203 22k 1% 0,6W
R372 482205025602 5k6 1% 0,6W
R373 482205022702 2k7 1% 0,6W
R401 482205021504 150k 1% 0,6W
R402 482205021003 10k 1% 0,6W
R403 482205024703 47k 1% 0,6W
R404 482205026803 68k 1% 0,6W
R405 482205021503 15k 1% 0,6W
R406 482205026803 68k 1% 0,6W
R407 482205022203 22k 1% 0,6W
R410 482205021001 100R 1% 0,6W
R411 482205021001 100R 1% 0,6W
R514 482205021003 10k 1% 0,6W
R515 482205023303 33k 1% 0,6W
R516 482205022203 22k 1% 0,6W
R518 482205025601 560R 1% 0,6W
R519 482205022203 22k 1% 0,6W
R520 482205022203 22k 1% 0,6W
R521 482205022203 22k 1% 0,6W
R522 482205021003 10k 1% 0,6W
R523 482205023303 33k 1% 0,6W
R524 482211681753 4R7 5% 0,5W
R525 482205023901 390R 1% 0,6W
R526 482205023302 3k3 1% 0,6W
R527 482205023304 330k 1% 0,6W
R528 482205021004 100k 1% 0,6W
R529 482205026803 68k 1% 0,6W
R530 482205023302 3k3 1% 0,6W
R531 482205023302 3k3 1% 0,6W
R532 482205021004 100k 1% 0,6W
R533 482205021003 10k 1% 0,6W
R901 482205023301 330R 1% 0,6W
R902 482205025601 560R 1% 0,6W
MISCELLANEOUS
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CIRCUIT DIAGRAM
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DIODES
D501 482213031438 1N4001G
D503 482213030621 1N4148
D901 532213080686 1N5392
D901 482213031878 1N4003G
D902 532213080686 1N5392
D902 482213031878 1N4003G
D903 532213080686 1N5392
D903 482213031878 1N4003G
D904 532213080686 1N5392
D904 482213031878 1N4003G
LD401 482213010236 LED Green/Red
ZD901 482213034195 BZX79-B13
ZD902 482213034195 BZX79-B13
TRANSISTORS & INTEGRATED CIRCUITS
IC401 482220932742 TL074CN
IC502 482220916935 TDA7296
Q352 482213041198 2SC945P
ELECTRICAL PARTS LIST
Q501 482213041198 2SC945P
Q502 482213041198 2SC945P
Q503 482213041198 2SC945P
Q504 482213041198 2SC945P
Q505 482213041198 2SC945P
Note: Only the parts mentioned in this list are normal
service spare parts.
All resistors are 1/6W 5% unless otherwise specified.Note : All capacitors are in uF unless otherwise specified.
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EXPLODED VIEW
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MECHANICAL PARTS LIST
1 9965 000 09709 Volume Knob
2 9965 000 09710 Front Cabinet
6 9965 000 07096 Port Edge
7 9965 000 03365 Cloth (185 X 185 mm)
11 9965 000 03360 Foot
27 3139 118 77230 ! Mains Cord UL
28 9965 000 07092 Bushing
29 4822 458 10658 Speaker Grille
30 9965 000 03361 Speaker Driver 40W 6,5" 4 ohm
31 4822 532 13065 Speaker Sponge
33 9965 000 03362 ! Power Transformer EI-66 120V 40W
9965 000 09734 RCA Cable L=3000mm
Note: Only the parts mentioned in this list are normal
service spare parts.
SCREW LIST
5 M3 x 8
9 M4 x 20
10 M3.5 x 14
16 M3 x 8
17 M3 x 14
25 M2 x 6
26 M3 x 10
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