Pioneer S-W100S User manual

ORDER NO.
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER ELECTRONIC (EUROPE) N.V. Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Wheelock Place, Singapore 238880
PIONEER ELECTRONIC CORPORATION 1998
MYXMA ‡AC220–230V
POWERED SUBWOOFER
RRV2012
T–ZZR AUG. 1998 Printed in Japan
S-W100S
CONTENTS
1. SAFETY INFORMATION....................................2
2. EXPLODED VIEWS AND PARTS LIST .............3
3. SCHEMATIC DIAGRAM.....................................6
4. PCB CONNECTION DIAGRAM .........................8
5. PCB PARTS LIST.............................................10
6. ADJUSTMENT..................................................11
7. GENERAL INFORMATION ..............................11
7.1 DIASSEMBLY ............................................11
7.2 BLOCK DIAGRAM .....................................12
8. PANEL FACILITIES AND SPECIFICATIONS
...................................................................13
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type Power Requirement
Model
S-W100S
MLXMA/E ‡AC220–230V
SDXMA1/E ‡AC110-115V/120-127V/220-230V/240V With the voltage selector
The voltage can be converted by the following method.

S-W100S
2
1. SAFETY INFORMATION
This service manual is intended for qualified service technicians; it is not meant for the casual
do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been
trained to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.
WARNING
This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to
cause cancer, birth defects or other reproductive harm.
Health & Safety Code Section 25249.6 – Proposition 65
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement
parts must be of identical designation.
REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que
les pièces de remplacement doivent avoir la même désignation.
ANY MEASUREMENTS NOT WITHIN THE
LIMITS OUTLINED ABOVE ARE INDICATIVE
OF A POTENTIAL SHOCK HAZARD AND
MUST BE CORRECTED BEFORE RETURN-
ING THE APPLIANCE TO THE CUSTOMER.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appliance
have special safety related characteristics. These are
often not evident from visual inspection nor the
protection afforded by them necessarily can be obtained
by using replacement components rated for voltage,
wattage, etc. Replacement parts which have these
special safety characteristics are identified in this
Service Manual.
Electrical components having such features are
identified by marking with a on the schematics and
on the parts list in this Service Manual.
The use of a substitute replacement component which
does not have the same safety characteristics as the
PIONEER recommended replacement one, shown in the
parts list in this Service Manual, may create shock, fire,
or other hazards.
Product Safety is continuously under review and new
instructions are issued from time to time. For the latest
information, always consult the current PIONEER
Service Manual. A subscription to, or additional copies
of, PIONEER Service Manual may be obtained at a
nominal charge from PIONEER.
(FOR USA MODEL ONLY)
1. SAFETY PRECAUTIONS
The following check should be performed for the
continued protection of the customer and service
technician.
LEAKAGE CURRENT CHECK
Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed
metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc.). Plug
the AC line cord of the appliance directly into a 120V
AC 60 Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5 mA.
Device
under
test
Leakage
current
tester
Earth
ground
Reading should
not be above
0.5 mA
Also test with
plug reversed
(Using AC adapter
plug as required)
Test all
exposed metal
surfaces
AC Leakage Test

S-W100S
3
2. EXPLODED VIEWS AND PARTS LIST
2.1 PACKING
(1) PACKING PARTS LIST
Mark No. Description Parts No.
NOTES : ÷Parts marked by “ NSP ” are generally unavailable because they are not in our Master Spare Parts List.
÷The mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
÷Screw adjacent to
∞
mark on the product are used for disassembly.
1
8
4
9
6
2
7
10
4
3
5
9
1 Packing Case See Contrast table (2)
2 Top Protector SHA2126
NSP 3 Warranty Card See Contrast table (2)
4 Sheet (550X300X0.5) SHC1721
NSP 5 Cord Set SME2789
6 Operating instructions See Contrast table (2)
7 Speaker cords (L=3.0m) SDS1052
8 Bottom Protector SHA2127
NSP 9 Polyethylene Bag E11- 024
10 RCA Plug cord (L=3.0m) SDE1028
Part No. RemarksMark MYXMA type MLXMA/E type SDXMA1/ E type
(2) CONTRAST TABLE
S-W100S/MYXMA, MLXMA/E and SDXMA1/E are constructed the same except for the following:
1 Packing Case SHG2108 SHG2110 SHG2109
NSP 3 Warranty Card ARY7022 Not used Not used
6 Operating instructions SRD1200 Not used Not used
(English/ French/ German/ ltalian/
Dutch/ Swedish/ Spanish/ Portuguese)
6 Operating instructions Not used SRD1202 Not used
(English/ Chinese)
6 Operating instructions Not used Not used SRD1201
(English/ Chinese/Spanish/ Portuguese)
No. Symbol and Description

S-W100S
4
NSP 1 CS ASSY SMW1546 SMW1548 SMW1547
10 Power Transformer (AC220-230V) STT1007 STT1008 STT1009
11 TRN. PRI ASSY SWZ1012 SWZ1012 SWZ1013
28 Fuse (T1.6A/250V: FU 2) Not used Not used SEK1005
(1) EXTERIOR (FRONT) SECTION PARTS LIST
Mark No. Description Parts No. Mark No. Description Parts No.
NSP 1 CS ASSY See Contrast table (2)
2 Fuse (T1.6A/250V: FU 1) SEK1005
3 Grill SMG1616
4 Cap SEC1396
5 Passive Radiator SWP9002
6 CONT ASSY SWZ1009
7 LED ASSY SWZ1015
8 Packing SEC1407
NSP 9 Shielding Plate SNE1024
10 Power Transformer See Contrast table (2)
11 TRN. PRI ASSY See Contrast table (2)
12 Screw BYC40P160FZB
13 Screw BPZ30P100FZK
14 Nut KBA1047
15 Screw KBA1048
16 Front Panel Assy SXB1344
17 VR Knob SNK2333
18 Power button SNK2335
19 Phase button(0°/180°) SNK2336
20 Turnover Knob SNK2334
21 Nut NK70FUC
22 TRN. SEC ASSY SWZ1014
23 Nonskid Pad SEC1397
NSP 24 Shielding Sheet SES1020
25 Binder SEP- 135
26 Barrier SEC1422
27 Ferrite Core SMF1001
28 Fuse (T1.6A/250V: FU 2) See Contrast table (2)
11
14
14
22
10
88
2
28
13
13
13
13
7
18
26
24
19
17 20 21 16
12
12
6
9
5
3
25
15
15
4
4
23
23
1
25 27
2.2 EXTERIOR (FRONT)
Part No. RemarksMark MYXMA type MLXMA/E type SDXMA1/ E type
(2) CONTRAST TABLE
S-W100S/MYXMA, MLXMA/E and SDXMA1/E are constructed the same except for the following:
No. Symbol and Description

S-W100S
5
1 AC Power Coed SDG1009 SDG1009 SDG1010
16 Rear Panel Assy SXB1346 SXB1346 SXB1345
26 Fuse (T1.6A/250V: FU 3) SEK1005 SEK1005 Not used
26 Fuse (T5.0A/250V: FU 3) Not used Not used SEK1008
27 Voltage Selector Not used Not used AKX-507
2.3 EXTERIOR (REAR)
(1) EXTERIOR (REAR) SECTION PARTS LIST
Mark No. Description Parts No.
Mark No. Description Parts No.
13 Screw BPZ30P100FZK
14 Screw KBA1049
15 Heatsink SNH1041
16 Rear Panel Assy See Contrast table (2)
17 Packing SEC1407
18 Packing SEC1394
19 Packing SEC1408
20 Packing SEC1393
21 Screw BYC35P200FZB
22 Packing SEC1417
23 Packing SEC1418
24 Packing SEC1419
25 Sheet SEE1069
26 Fuse ( FU 3 ) See Contrast table (2)
27 Voltage Selector See Contrast table (2)
28 Screw BYC40P160FZB
1 AC Power Coed See Contrast table (2)
2 JACK ASSY SWZ1011
3 Rear Cover SNK2332
4 Speaker SWA9003
5 Screw BYC35P250FZB
6 POWER ASSY SWZ1007
7 Screw BBZ30P060FMC
8 Screw BBZ35P080FMC
9 Cord Stopper SNK2361
10 Packing SEC1395
11 Heatsink BRKT (A) SNB1061
12 Heatsink BRKT (B) SNB1062
1
27
9
28
26
28
5
21
21
13 13
16
23
24
2
3
4
28 28
14
8
8
77
6
12
11
22
10
15
18
25
17
19
20
Part No. RemarksMark MYXMA type MLXMA/E type SDXMA1/E type
(2) CONTRAST TABLE
S-W100S/MYXMA, MLXMA/E and SDXMA1/E are constructed the same except for the following:
No. Symbol and Description

S-W100S
6
A
B
C
D
1234
1234
3. SCHEMATIC DIAGRAM
ABCF
3.1 JACK , CONT, POWER, LED, TRN. SEC and TRN. PRI ASSEMBLIES
LED ASSY (SWZ1015)
TRN.SEC ASSY (SWZ1014)
TRN.
PRI ASSY
(SWZ1012
:MY,ML)
LD2
POWER
TO CN11
B
A
C F
D
TRN.
PRI ASSY
(SWZ1013:SDXMA1/E)
TO CN11
C
D
TO CN14
A
192-W45159992
SMF1001(F1:1/2)
BRO
ORA
GRE
YEL
BLU
120 –
127V
110 –
115V
220 –230V
240V
JK4 : AKX-507A
VOLTAGE
SELECTOR
RED
/SDXMA1/E
:STT1009
/MYXMA : STT1007
/MLXMA/E : STT1008
SDG1009 :
/MYXMA, MLXMA/E
SDG1010 :
/SDXMA1/E
FU3: SEK1008 / SDXMA1/E
T5A/250V
SEK1005/MYXMA
T1.6A/250V /MLXMA/E
JACK ASSY

S-W100S
7
A
B
C
D
5678
5678ED
TO CN12
D
E
SMF1001(F1:2/2)
SWITCHES:
SW2: POWER SW / OFF
CONT ASSY
POWER ASSY
Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or "PCB PARTS
LIST".

S-W100S
8
A
B
C
D
1234
1234
4. PCB CONNECTION DIAGRAM
BA D
PRIMARY
PRIMARY
RISK OF FIRE
-REPLACE FUSE
AS MARKED.
JACK ASSY
SWZ1011-A
CONT ASSY SWZ1009-A
CN13
FU3
L101
C81
CN14
R23
R22
J 1
R19
R21
R20
C43
C6
R25
C5
R24
R26
JK1
GND
L/P
STGND
CN6
1
J2
JK2
LED ASSY
SWZ-1015-A
GND
CN9
1
LD2
LDB+
+
+
+
+
+
+
GND
L/P
STGND
1
1
1
1
1
1
1
1
-GND
LDB+
STGD
LDB+
GND
+15V
-15V
SIG
CN2
CN10
R17
R16
C52
C7
R28
R27
R31
R53
C8
D2
D3 R29
C62
J5
R33 IC1 IC2 IC3
J13
J9
J3
G1 G2
C10
C13
J6
C9
R36
C12
J7 C14
R34
R32
C63
R39
R30 C53
D4
D5 C80
CN5
C38
R41
R40 J11
R59
R43
R35 R37
C11
R38 C37
C28
J10
R42
C16
VR1 VR2
TURN OVER
VOLUME
CN17
C15
R55
C47
C54
PHASE SW4
J4
CN11
PW SW -
PW SW +
SW2
POWER SW
LED ASSY
B
CONT ASSY
D
JACK ASSY
A
(SNP1078-A)
AC POWER CORD
IC3
IC2
IC1
VR2
VR1
NOTE FOR PCB DIAGRAMS:
1. Part numbers in PCB diagrams match those in the schematic
diagrams.
2. A comparison between the main parts of PCB and schematic
diagrams is shown below.
Symbol in PCB
Diagrams Symbol in Schematic Diagrams Part Name
Transistor
Transistor
with resistor
Field effect
transistor
BCE
BCE
BCE
DGS
BCE
BCEBCE
DGSDGS
3. The parts mounted on this PCB include all necessary parts
for several destination.
For further information for respective destinations, be sure
to check with the schematic diagram.
4. Viewpoint of PCB diagrams
Resistor array
3-terminal
regulator
CapacitorConnector
P. C. Board Chip Part
SIDE B
SIDE A
SIDE A

S-W100S
9
A
B
C
D
1234
1234
F
E
C
++
+ + +
+
+
+
+
+
+
+
++ +
+
+
STGD
LDB+
GND
+15V
-15V
SIG
1
C76
C67
C45
C32
C69
C68
C33
C30
C31
C40
C58
C41 C48
C56
C55
C44
C25
C59
C65 C64
R71
Q6
Q9
Q5 R70
R69 R64
D11
D10
D12
D13
R65
R78
R74
R44
J26
J23
J38
C19
J27
J30
J28
C22
C23
R49 R47
DZ3
R45
C21
J32
C77
J39
C66
CN1
R46
R48
DZ2
C28
R52
D7
AC
0V
AC
R82
R83
R66
R60
R77
R67
R62 R63
R61
R80
R68
R85
R81
R88
R89
R54
R73
RLY1
PD1
SPK+
SPK-
R87
R51
R72
R75
R58
R50
R84
IC 5
1
C70
C61
C60
C39
C57
D1
CN7
C49
C42
C18 CN19
C46
C35
C36
C26
C29
J22
J16 J17
J18
J34
C34
J35 J36
J49
J37
R57
+
1
R56 Q13
C50
C51
J29
J31
Q14
J44
J19
J20
J33
J25
1
1
1
R79
510 15
IC 7
IC 6
POWER ASSY SWZ1007-A
PRIMARY
RISK OF FIRE
-REPLACE FUSE
AS MARKED.
TRN.PRI ASSY SWZ1012-A SWZ1013-A
CN12 AC CORD CN4
1
1
1
FU2
FU1
FU2
0V
PW SW+
PW SW - 115V
120V
0V
5V
AC1
C27
CN3A
TH0V0V115V120V0V5V
P7 P6 P5 P4 P3 P2
J15
J14
P1
CN3
SWZ-1014-A
TRN. SEC ASSY
P14 P10
P12
AC
0V
AC
CN8
PD3
PD2
TRN. SEC
ASSY
F
TRN. PRI ASSY
C
POWER ASSY
E
(SNP1078-A)
SPEAKER
POWER
TRANSFORMER
Q9
IC7
IC6
Q6
Q5
IC5
Q14
Q13
SIDE A

S-W100S
10
NSP AF ASSY SWK1034 SWK1034 SWK1035
POWER ASSY SWZ1007 SWZ1007 SWZ1007
CONT ASSY SWZ1009 SWZ1009 SWZ1009
JACK ASSY SWZ1011 SWZ1011 SWZ1011
TRN. PRI ASSY SWZ1012 SWZ1012 SWZ1013
TRE. SEC ASSY SWZ1014 SWZ1014 SWZ1014
LED ASSY SWZ1015 SWZ1015 SWZ1015
5. PCB PARTS LIST
Mark No. Description Parts No.
NOTES : ÷Parts marked by “ NSP ” are generally unavailable because they are not in our Master Spare Parts List.
÷The mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
÷When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex. 1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by
J = 5%, and K = 10%).
560 Ω=56 ×101 =561................................................... RD1/4PU 561J
47k Ω=47 ×10 3=473 .................................................. RD1/4PU 473J
0.5 Ω=R50 ...................................................................... RN2H Â50K
1 Ω=1R0 ......................................................................... RS1P 1Â0K
Ex. 2 When there are 3 effective digits (such as in high precision metal film resistors).
5.62k Ω=562 ×10 1=5621 ........................................... RN1/4PC 5621F
SEMICONDUCTORS
IC05 NJM4558LD
IC06 (UPC1237HA) SZQ1023
IC07 (STK4044MK2) SZQ1024
Q5, Q6 2SC1815
Q9 (2SA988) SZQ1025
Q13 (2SC4549K) SZQ1026
Q14 (2SA1741K) SZQ1027
D 1 D5SBA20
D7, D12 (1N4004) SZQ1028
D10, D11, D13 1SS133
ZD2, ZD3 (MTZJ15B) SZQ1029
RELAY
RLY1 (OSA-DM3) SZS1007
POWER ASSY
E
Mark Symbol and Description Part No.
MYXMA type MLXMA/E type SDXMA1/E type Remarks
7LIST OF WHOLE PCB ASSEMBLIES
7CONTRAST OF PCB ASSEMBLIES
CN17 (3P) Not used SDX1032
CN18 (3P) Not used SDX1034
Mark RemarksSymbol and Description Part No.
SWZ1012 SWZ1013
TRN. PRI ASSY
NOTE:
Other assy will be replaced with the whole asssembly.
Therefore, individual parts in the assembly are not
specified for servicing.

S-W100S
11
7. GENERAL INFORMATION
7.1 DISASSEMBLY
Grill ASSY
Slit
Speaker
Rear Cover
POWER Assy
JACK Assy
Back board
2
1
2
3
3
A
4
5
5
6
1
6. ADJUSTMENT
There is no information to be shown in this chapter.
¶REAR COVER SECTION
Remove 6 screws (1) from the Rear Cover.
¶JACK ASSY SECTION
Remove 6 screws (2) from the JACK Assy.
Remove the Aconnector from the CONT Assy .
¶SPEAKER SECTION
Remove the Rear Cover.
Each speaker is attached to the Back board by 4 external screws
(3). detach it, unfasten those screws.
When attaching it, face its terminal upward.
¶POWER ASSY SECTION
Remove the Rear Cover.
Remove 6 screws (5) from the Back board.
Remove the 6connector from the POWER Assy .
¶GRILL ASSY SECTION
Remove the Grill Assy.
Insert a screwdriver into the slit under the Grill Assy to pry
open the front grill gradually and uniformly.
Remove 3 (AC and Signal) connectors from the CONT ASSY .

S-W100S
12
7.2 BLOCK DIAGRAM
BUFFER
INPUT
AMP
IC01
NJM4558L
PHASE SW
FLAT AMP
NJM4558L
IC02
LOW CUT
FILTER
NJM4558L
IC03
VOLUME
HIGH
CUT
FILTER
NJM4558L
IC03
NJM4558L
IC05
LIMITER
STK4044∏
IC07
POWER
AMP
UPC1237HA
IC06
PROTECTION
CONTROL
+
+
+
+
L L R R
SPEAKER
LEVEL OUTPUT
LEVEL INPUT
SPEAKER
LOW LEVEL
IN PUT
LOW LEVEL
OUT PUT
FLAT AMP
NJM4558L
IC02
FLAT AMP
IC05 NJM4558L
(0 /180 )
(30 Hz) (50-200Hz)

S-W100S
13
8. PANEL FACILITIES AND SPECIFICATIONS
7PANEL FACILITIES
POWERED SUBWOOFER ∫¿ˆ¥YY∫
1
2345
R
R
L
L
67
8
9
FRONT PANEL
1Power switch (POWER)
When pressed, power is turned ON; when pressed again, power is
turned OFF.
2Power Indicator
Illuminates when the power is on.
3Phase switch (PHASE —0˚ / _180˚)
When depressed (_180˚), the output phase becomes the reverse
of the input signal, and when raised (—0˚ ), it is in the same phase
as the input signal.
÷Normally, the switch is set to (—0˚ ).
But when the sound connection between the subwoofer and
the left and right speakers sounds unnatural, try switching to
180˚ and set the switch in the position where the sound is natural.
4Level knob (LEVEL)
Sets the subwoofer volume.
÷Turn the knob slowly from the MIN position.
÷With this unit, the bass level can be independently set, so do
not turn up the bass on the stereo amplifier.
5Turnover knob (TURNOVER)
Sets the high limit of the frequency played back by the subwoofer.
÷Setting Criteria
50Hz ... when the diameter of the left/right speakers is 20-cm (8 in.)
or more.
100Hz . when the diameter of the left/right speakers is 10 – 25-cm (4
– 10 in.).
200Hz . when the diameter of the left/right speakers is 12-cm (5 in.)
or less.
7SPECIFICATIONS
REAR PANEL
6Line Level Input terminal (LINE LEVEL INPUT)
Connects to the stereo amplifier’s SUBWOOFER PRE-OUT
terminal, with the specially provided RCA plug cord.
7Line Level Output terminal (LINE LEVEL OUTPUT)
Used for connecting other equipment through the amplifier.
8Speaker Level Output terminals
(SPEAKER LEVEL OUTPUT)
When the speakers output terminals on the stereo amplifier
are connected to this unit’s SPEAKER LEVEL INPUT terminals
9and used as the unit’s input signal, these terminals are used
to connect the left and right speakers via the unit.
9Speaker Level Input terminals
(SPEAKER LEVEL INPUT)
Connect to the speakers output terminals on the stereo
amplifier, with the specially provided speaker cords.
Cabinet ...................... Floor type with passive radiator system
Speaker (Magnetically shielded type) ........... 16 cm cone type
Passive radiator .................................. 15.6 cm x 28.6 cm oval
Power Amplifier
Continous Power Output (RMS) ...... 100 W/4 Ω (30 – 200 Hz)
Total Harmonic Distortion ................................................0.5 %
(30 – 200 Hz, 4 Ω, 25 W)
÷Above specifications are for when power supply is 230 V.
Input (sensitivity at 100 Hz/impedance) (MYXMA, MLXMA/E)
SPEAKER LEVEL .................................... 1.6 V + 1.6 V/15 kΩ
(both channels in-phase)
LINE LEVEL (RCA jack) ...................................... 160 mV/50 kΩ
Turnover Frequency .......... 50 – 200 Hz (continuously variable)
Outline Dimension ................. 190 (W) x 430 (H) x 430 (D) mm
Weight (without package) ............................................ 10.0 kg
Power Requirements
European model .............................. AC 220 – 230 V, 50/60 Hz
Singapore model .............................. AC 220 – 230 V, 50/60 Hz
Multi-voltage model ..............
AC 110 – 115V/120V – 127V/220 – 230V
/240V (seleccionable), 50/60 Hz
Power Consumption
Singapore model ............................................................... 82 W
European models .............................................................. 86 W
Multi-voltage model ......................................................... 243 W
Accessories ............................................. Speaker cords x 2
RCA plug cord x 1
Operating instructions x 1
Warranty card (MYXMA: Only) x 1
NOTE:
Specifications and design subject to possible modification
without notice, due to improvements.