Panasonic SB-WA17E User manual

nActive subwoofer
Type 1 Way, 2 Speaker, Bass re
f
Speaker unit (Woofer) 15 cm Cone type, 4 Ω
Output sound pressure level 84 dB/W (1.0 m)
Frequency range 34 Hz-220 Hz (-16 dB)
38 Hz-190 Hz (-10 dB)
Dimensions (W x H x D) 202 x 410 x 500 mm
Mass 13.7 kg
nGeneral
Power supply AC 230-240 V, 50Hz (EB)
AC 230 V, 50Hz (E)
Power consumption 390 W
Power consumption (standby
mode)
1W
Note :
Specifications are subject to change without notice.
Mass and dimensions are approximate.
1 Safety Precautions 3
©2005 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SB-WA17E
SB-WA17EB
Colour
(S)... Silver Type
nSystem : SC-HT17(EG) Music Center: SA-HT17(EG)
Satellite Speakers: SB-HT17(P)
Active Subwoofer: SB-WA17(E)
nSystem : SC-HT17(EP) Music Center: SA-HT17(EP)
Satellite Speakers: SB-HT17(P)
Active Subwoofer: SB-WA17(E)
nSystem : SC-HT17(EB) Music Center: SA-HT17(EB)
Satellite Speakers: SB-HT17(P)
Active Subwoofer: SB-WA17(EB)
1.1. GENERAL GUIDELINES 3
Active Subwoofer System
Specification
CONTENTS
Page Page
ORDER NO. MD0504186C2

2 Caution for AC Mains Lead 4
3 Handling the Lead-free Solder 5
3.1. About lead free solder (PbF) 5
4 Before Repair and Adjustment 5
5 Protection Circuitry 5
6 Connection of the Speaker Cables 6
7 Disassembly Procedure 7
7.1. Disassembly flow chart 7
7.2. Disassembly of the Speaker Unit and Checking of the
P.C.B. 9
8 Voltage Measurement and Waveform Chart 15
8.1. Voltage Measurement 15
8.2. Waveform Chart 16
9 Block Diagram 17
10 Notes of Schematic Diagram 18
11 Schematic Diagram 19
11.1. Power Circuit 19
11.2. Transformer Circuit and AC Inlet Circuit 21
11.3. Amplifier Circuit 22
12 Printed Circuit Board 23
12.1. Power P.C.B. 23
12.2. AC Inlet P.C.B. and Transformer P.C.B. 25
12.3. Amplifier P.C.B. 26
13 Wiring Connection Diagram 27
14 Illustration of ICs, Transistors and Diodes 28
15 Parts Location and Replacement Parts List 29
15.1. Cabinet 30
15.2. Electrical Parts List 33
15.3. Packing Materials & Accessories Parts List 36
15.4. Packaging 36
2
SB-WA17E / SB-WA17EB

1 Safety Precautions
1.1. GENERAL GUIDELINES
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, ensure that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
3. After servicing, check for leakage current to prevent from being exposed to shock hazards.
1.1.1. LEAKAGE CURRENT COLD CHECK
1. Unplug the AC cord and connect a jumper between the two prongs on the plug.
2. Using an ohmmeter measure the resistance value, between the jumpered AC plug and each exposed metallic cabinet part on
the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the
chassis, the reading should be between 1MΩand 5.2Ω.
When the exposed metal does not have a return path to the chassis, the reading must be .
Fig. 1
1.1.2. LEAKAGE CURRENT HOT CHECK (See Figure 1.)
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5kΩ, 10 watts resistor, in parallel with a 0.15µF capacitors, between each exposed metallic part on the set and a
good earth ground such as a water pipe, as shown in Figure 1.
3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.
6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may
be used to make the hot checks, leakage current must not exceed 1/2 milliamp. Should the measurement is outside of the limits
specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to
the customer.
3
SB-WA17E / SB-WA17EB

2 Caution for AC Mains Lead
4
SB-WA17E / SB-WA17EB

3 Handling the Lead-free Solder
3.1. About lead free solder (PbF)
Distinction of PbF P.C.B. :
P.C.B.s (manufactured) using lead free solder will have a PbF stamp on the P.C.B.
Caution:
· Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 - 70°F (30 - 40°C) higher.
Please use a high temperature soldering iron. In case of the soldering iron with temperature control, please set it to 700 ± 20°F
(370 ± 10°C).
· Pb free solder will tend to splash when heated too high (about 1100°F/600°C).
· When soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be sure to heat the
soldering points with the Pb free solder until it melts enough.
4 Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C601~C604 through a 10 Ω, 1 W resistor to ground.
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
Current consumption at AC 230 V, 50 Hz in NO SIGNAL mode should be ~900 mA (E).
Current consumption at AC 240 V, 50 Hz in NO SIGNAL mode should be ~900 mA (EB).
5 Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
· No sound is heard when the power is turned on.
· Stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
5
SB-WA17E / SB-WA17EB

6 Connection of the Speaker Cables
· Be sure to connect speaker cables before connecting the AC power supply cord.
· The load impedance of any speaker used with this unit must be 4Ω.
· Be sure to connect the cable from the right speaker to the right terminal and the cable from the left speaker to the left terminal.
1. Strip off the outer covering, and twist the center conductor. Make sure the bare ends of the wires are not unravelled. (If they are,
twist them tight again.)
2. Insert the wire to the rear panel of the unit and close the lever.
6
SB-WA17E / SB-WA17EB

Some chassis components may have sharp edges.
Be careful when disassembling and servicing.
7 Disassembly Procedure
“ATTENTION SERVICER”
1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the
main components.
2. For reassembly after operation checks or replacement, reverse the respective procedures.
Special reassembly procedures are described only when required.
3. Select items from the following index when checks or replacement are required.
· Disassembly of the Front Panel Unit
· Disassembly of Woofer Speaker Unit 1
· Disassembly of Woofer Speaker Unit 2
· Disassembly of the Power Amp Unit
· Disassembly of the Rear Panel and Fan Unit
· Disassembly and checking of the AC Inlet P.C.B. and Amplifier P.C.B.
· Disassembly and checking of the Power P.C.B. and Transformer P.C.B.
· Replacement of Power ICs and Transistors
7.1. Disassembly flow chart
The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the
servicing.
To assemble the unit, reverse the steps shown in the chart below.
7.1.1. Disassembly of Front Panel Assembly
7
SB-WA17E / SB-WA17EB

7.1.2. Disassembly of Rear Assembly
8
SB-WA17E / SB-WA17EB

7.2.1. Disassembly of the Front Panel
Unit
Step 1: Slot in a steel ruler to give a gap between the Front
Panel Unit and the Speaker Cabinet Assembly as arrow shown.
Steps 2: Slot a piece of wood chip in between the Front Panel
Unit and the steel ruler as arrow shown.
Step 3: Use the screwdriver to slightly lift up the Front Panel
Unit as arrow shown.
Note:
Be careful with the bosses which are glued to the Speaker
Cabinet Assembly Unit.
Step 4: Remove the Front Panel Unit from the Speaker
Cabinet Assembly Unit as arrow shown.
7.2. Disassembly of the Speaker Unit and Checking of the P.C.B.
9
SB-WA17E / SB-WA17EB

· Assembly of the Front Panel Unit.
Step 1: Clean up the remaining glue at the 6 bosses points
and replace with the normal glue.
Step 2: Replace the Front Panel Unit firmly back to the
Speaker Cabinet Assembly Unit.
7.2.2. Disassembly of the Woofer
Speaker 1
Follow Step (1) to Step (4) described in section 7.2.1.
Step 1: Remove 4 screws.
Step 2: Remove the Woofer 1 by detaching the (+) red and (-)
black wires.
7.2.3. Disassembly of the Woofer
Speaker 2
Follow Step (1) to Step (4) described in section 7.2.1.
10
SB-WA17E / SB-WA17EB

Step 1: Remove 4 screws.
Step 2: Remove the Woofer 2 by detaching the (+) red and (-)
black wires.
7.2.4. Disassembly of the Power Amp
Unit
Step 1: Lay the speaker unit as shown. Remove 7 screws from
the bottom of the Speaker Cabinet Assembly Unit.
Step 2: Remove 3 screws from the rear panel.
11
SB-WA17E / SB-WA17EB

Step 3: Pull out the Power Amp Unit slightly as arrow shown.
Step 4: Disconnect the connector (CN604).
Step 5: Pull out the entire Power Amp Unit.
7.2.5. Disassembly of the Rear Panel and
Fan Unit
Follow Step (1) to Step (5) described in section 7.2.4.
Steps 1 & 2: Remove 7 screws from the rear panel.
Step 3: Disconnect the connector (CN507) to detach the rear
panel.
Step 4: Remove 4 screws from the rear panel.
12
SB-WA17E / SB-WA17EB

Step 5: Lay the rear panel and remove the Fan Unit as arrow
shown.
7.2.6. Disassembly and checking of the
AC Inlet P.C.B. and Amplifier
P.C.B.
Follow Step (1) to Step (5) described in section 7.2.4.
Follow Step (1) to Step (3) described in section 7.2.5.
Step 1: Check both the Amplifier P.C.B. and AC Inlet P.C.B..
7.2.7. Disassembly and Checking of the
Power P.C.B. and Transformer
P.C.B.
Follow Step (1) to Step (5) described in section 7.2.4.
Follow Step (1) to Step (3) described in section 7.2.5.
Steps 1 & 2: Remove 4 screws.
Step 3: Flip the Power P.C.B. as shown for checking both the
Power P.C.B. and Transformer P.C.B.
7.2.8. Replacement of Power ICs and
Transistor
Follow Step (1) to Step (5) described in section 7.2.4.
Follow Step (1) to Step (3) described in section 7.2.5.
13
SB-WA17E / SB-WA17EB

Step 1: Disconnect the connector (CN502).
Step 2: Remove the AC Inlet P.C.B. by pulling the P.C.B.
support claw as arrow shown.
Step 3: Desolder the terminals of IC601, Transistors Q601 and
Q602.
Step 4: Disconnect the connectors CN601, CN602 and CN603
and remove the Amplifier P.C.B..
Step 5: Remove 4 screws.
Step 6: Remove 2 screws and the transistor holders.
Step 7: Flip the Power P.C.B. as shown to desolder the
terminals of the Power IC501, Transistors Q511 and Q512.
14
SB-WA17E / SB-WA17EB

8 Voltage Measurement and Waveform Chart
Note:
· Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance)
with the chassis taken as standard.
Therefore, there may exist some errors in the voltage values, depending on the internal impedance of the DC circuit tester.
· Circuit voltage and waveform described herein shall be regarded as reference information when probing defect point
because it may differ from actual measuring value due to difference of Measuring instrument and its measuring condition
and product itself.
8.1. Voltage Measurement
8.1.1. AC Inlet P.C.B.
8.1.2. Power P.C.B.
8.1.3. Amplifier P.C.B.
15
SB-WA17E / SB-WA17EB
Ref No.
MODE E C B E C B E C B E C B
CD PLAY 0 0.1 0.8 0 3.4 -0.2 6.0 12.2 6.6 0 0.8 0
STANDBY 0 6.0 0 0 3.4 -0.3 6.0 11.6 6.6 0 0 0
Q515
AC INLET P.C.B.
Q516 Q519Q517
Ref No.
MODE 1234567891011121314151617181920
CD PLAY 31.2 31.2 64.7 -64.5 0 31.9 -31.9 000000-0.2 32.2 -32.2 -10.4 0 0 64.7
STANDBY 0 0 14.5 0.4 0 -0.1 00000000-0.3 000014.5
Ref No.
MODE 21 22 23 24 25 26
CD PLAY -64.6 00000
STANDBY 0.4 00000
Ref No.
MODE E C B E C B 1 2 3 E C B E C B
CD PLAY 0 5.3 0 0 5.3 0 0 0 -0.3 0 0.8 0 0.8 0 0.8
STANDBY 0 1.1 0 0 1.1 0 0 0 0 0 -0.2 0 -0.2 0 -0.2
Ref No.
MODE E C B E C B E C B E C B E C B
CD PLAY 5.2 32.3 5.8 -11.4 -32.2 -11.9 0 -0.3 0 0 -11.3 0.2 -11.3 5.1 -11.3
STANDBY 0.7 -0.2 -0.2 0.5 0.1 0 0 0 0 0 0 0 0.5 0.7 0.5
Ref No.
MODE E C B E C B E C B E C B
CD PLAY 5.2 - 4.7 4.8 5.2 - 0 0.3 -0.2 0.3 5.3 0
STANDBY 0.7 0 0.3 2.7 0.7 0 0 0.4 0 0.4 1.1 0
Q512 Q553
Q556
Q520 Q552
Q503
Q554 Q555 Q557
Q501
Q511
POWER P.C.B.
IC501
IC501
Q502 Q505 Q506
Ref No.
MODE 1234567891011121314151617181920
CD PLAY 64.9 -64.5 0 32.0 -32.0 0 0 0 -12.2 0 0 -0.2 32.6 -32.6 -10.1 0 0 49.4 -50.5 0
STANDBY 1.0 -0.5 0 1.3 -0.8 0 0 0 0.2 0 0 0 1.3 -0.8 0 0 0 0.5 0 0
Ref No.
MODE 21 22
CD PLAY 0 0
STANDBY 0 0
Ref No.
MODE E C B E C B 1 2 3
CD PLAY 49.2 64.6 49.8 -50.4 -64.4 -51.0 0 49.8 0.6
STANDBY 0.7 1.1 1.1 -0.1 -0.5 -0.5 0 1.1 0.3
IC601
IC601
Q601 Q602 Q603
AMPLIFIER P.C.B.

8.2. Waveform Chart
CN501 PIN 1
CD PLAY
17.6Vp-p (10msec.div)
CN501 PIN 3
CD PLAY
17.6Vp-p (10msec.div)
CN501 PIN 21
CD PLAY
5.48Vp-p (10msec.div)
CN501 PIN 22
CD PLAY
7.24Vp-p (10msec.div)
CN501 PIN 24
CD PLAY
6.88Vp-p (10msec.div)
CN503 PIN 1
CD PLAY
131Vp-p (10msec.div)
CN503 PIN 3
CD PLAY
67.2Vp-p (10msec.div)
CN503 PIN 7
CD PLAY
68.0Vp-p (10msec.div)
CN503 PIN 9
CD PLAY
132Vp-p (10msec.div)
CN602 PIN 5
CD PLAY
3.36Vp-p (10msec.div)
CN501 PIN 8
CD PLAY
1.09Vp-p (10msec.div)
16
SB-WA17E / SB-WA17EB

9 Block Diagram
L500
FILTER
Q506
Q505
Q559
Q503
D502
D501
D528
Q516
SYNC
PCONT
POWER CONTROL
CIRCUIT POWER CONTROL/PROTECTION CIRCUIT
22 23 18
(19)
2015 3 6 9
13 14 16 4
21 16 8511(12) 24
SWITCHING
INTERFACE
SWITCH
DC DET
SWITCH
SWITCH
SYNC
SWITCH
-
+
-
+
-
+
-
+
SL(R)
SW
CIN
SUBIN
SLIN(R)
+DI SENS
+VD +VCC HI +VCC LOW
C_O
SUB_O
SR_L(SR_R)
IN GND
DISP HMUT
AC IN IH DET -VCC LOW -VCC HI -VD
-DI SENS
FILTER
FILTER
FILTER
FRONTL(R)
C
Q517
VOLTAGE
REGULATOR
F1
Z501
Q501,
Q502
SWITCH
DC_DET
Q520
INTERFACE
SWITCH Q511
HP_CNT
Q515,Q519
DCDET
SWITCH
VOLTAGE
REGULATOR
D597
D598,D599
T501
T502
D508
AC2
AC1
TO MAIN
BLOCK
(JK2000) OF
SA-HT17E/EB/EG/EP-S
FL1
FL2
20
(21)
L_IN(R_IN)
6
(3)
L_OUT(R_OUT)
Q512
VOLTAGE
REGULATOR
Q601
VOLTAGE
REGULATOR
D601
Q602
VOLTAGE
REGULATOR
Q603
VOLTAGE
REGULATOR
D602
4
-VCC LOW
+VCC LOW
5D603
D604
26
(25)
IN_1(IN_2)
1
(2)
OUT_1(OUT_2))
12
IH DET
11
DISP HMUT
7
AC IN
+DI SENS
-DI SENS
13
14
1
+VCC HI
18
+VD
2
-VCC HI
19
-VD
E500
POWER IC
RSN312H24A-P
POWER IC
IC501
RSN311W64D-P
JK500
AC INLET
RLY501
POWER TRANSFORMER
BACK-UP
TRANSFORMER
CENTRE
SPEAKER
SUBWOOFER
FRONT
SPEAKER
JK501(JK502)
SURROUND
SPEAKER
IC601
CN603
JK502
JK501,CN603
Q552~Q557
FAN
MOTOR
DRIVE
B B
B B
B
B
B
B
B
B
SIGNAL LINES
( ) Indicates Pin No. of Right Channel Note : Signal Lines are applicable to the Left Channel only.
: MAIN SIGNAL LINE
B
B
B
B
BB
B
B
M
A
17
SB-WA17E / SB-WA17EB

(All schematic diagrams may be modified at any time with the
development of the new technology)
Note:
· The voltage value and waveforms are the reference voltage
of this unit measured by DC electronic voltmeter (high
impedance) and oscilloscope on the basis of chassis.
Accordingly, there may arise some error in voltage values
and waveforms depending upon the internal impedance of
the tester or the measuring unit.
· Importance safety notice :
Components identified by mark have special
characteristics important for safety. Furthermore, special
parts which have purposes of fire-retardant (resistors), high-
quality sound (capacitors), low-noise (resistors), etc. are
used. When replacing any of components, be sure to use
only manufacturer´s specified parts shown in the parts list.
Caution !
IC, LSI and VLSI are sensitive to static electricity.
Secondary trouble can be prevented by taking care during
repair.
· Cover the parts boxes made of plastics with aluminium foil.
· Put a conductive mat on the work table.
· Ground the soldering iron.
· Do not touch the pins of IC, LSI or VLSI with fingers directly.
10 Notes of Schematic Diagram
18
SB-WA17E / SB-WA17EB

11 Schematic Diagram
11.1. Power Circuit
: MAIN SIGNAL LINE
R501
4.7K
CN501
CN507
D502
D501
Q501 Q502
R546 1K
D503
D501-D502
B0JAPG000019
E501
K4CZ01000027
D508
B0AACK000004
Q520
B1GCCFJJ0016
INTERFACE SWITCH
D503
MA2C700A0F
D504
B0AACK000004
AC1
DC_DET
AC2
SYS6V
HP_CNT
D.GND
FL
A.GND
A.GND
FR
SL
A.GND
SR
C
A.GND
SW
A.GND
PCONT
SYNC
FL
AC2
FL
AC1
R502
4.7K
R506
15K
R505
15K
C503
1000P
C506 1000P
C505 1000P
R513
56K
C507 18P
C508 18P
R514 56K
R516 56K
C510 22P
R515 56K
C509 22P
R509
4.7K
R510 4.7K
R550
10K
R511
15K
R512
15K
R551
10K
C516
0.01 C515
0.01
C517
0.01
R402
1K
Q503
R532
4.7K
R523
120K
R524
120K
R526
120K
C513
0.047
R519
820K
R520
22K
C514
6.3V100
R529
22K
R530 1
R531 1
R521
56K
R522
56K
C529 0.1
R549 3.9K
R547
390K
C534
50V33
R548
330K
R545
220K
Q506
B1GCCFJJ0016
INTERFACE SWITCH
Q505
B1AACF000117
SWITCHING
Q501,Q502
B1AACF000117
SWITCH
Q503
B1AACF000117
SWITCH
IC501
RSN311W64D-P
POWER HIC
C551
0.01
+
-
R525
150K
D558,D559
B0AACK000004
D555
B0AACK000004
D562
B0AACK000004
CN602
IC501
IN_1
IN GND SUBin Cin -VD +VD SLin SRin RELAY -VCC LOW +VCC LOW IH DET DISP HMUT SR_R SR_L GND AC IN C_O
-VH OUT
+VH OUT SUB_O -VCC HI +VCC HI OUT_2 OUT_1
IN_2
Q559
Q559
B1AACF000117
DC DETECT SWITCH
Q505
SUB+B
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
2
4
6
8
9
7
5
3
1
2
1
1
2
3
4
6
8
7
5
TO
AMPILIFER CIRCUIT
(H602/W602) ON
SCHEMATIC
DIAGRAM-4
FAN_DRV
L_in
GND
R_in
ACIN
HMUTE
DCDET
GND
26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 87654321
SCHEMATIC DIAGRAM-1
POWER CIRCUIT
: +B SIGNAL LINE
TO FAN
TO
MAIN CIRCUIT
(JK2000) OF
SA-HT17E/EG/EB/EP-S
R583
100
R584
47K
D559
D558 R582
220K
C576
16V 10P
C577
16V 10
R603
10K
C647
6.3V 470
Q557
2SD0592ARA
FAN MOTOR DRIVE
D560
B0AACK000004
R606 22
D557
B0EAKM000117
C575
0.01
Q555
Q555
2SD0592ARA
FAN MOTOR DRIVE
Q556
B1ACCF000094
FAN MOTOR DRIVE
Q554
B1ACCF000094
FAN MOTOR DRIVE
Q554
C574
0.01
D556
B0BA01100004
C570
16V 330
R564
220K
R563
1K
R602
4.7K
Q552
B1ACCF000094
FAN MOTOR DRIVE
Q553
2SD0592ARA
FAN MOTOR DRIVE
Q552 R559
10K
R558
100K
C578
0.01
C579
0.01
R604
2.2M
R562
4.7K
R581
6.8K
Q553
Q557
C580
50V 2.2
D560
R611
10K
C648
0.1
R627
10K
R626
10K
: -B SIGNAL LINE
FAN CONTROL
SUBW
C504 1000P
19
SB-WA17E / SB-WA17EB

: MAIN SIGNAL LINE
R567
1.5K
CN603
H503/W500
CP502
D564
D566
D563
D565
D510
B0BA5R700008
D509
B0BA5R100013
D563-D566
B0BA01900005
E500
K4CZ01000027
Q511
B1BACG000048
VOLTAGE REGULATOR
PCONT
C518
0.047
R533
10
R534
10
C519
0.047
C533
1000P
C532
1000P
C531
1000P
C550
0.01
C547
42V4700
C546
12V3300
C545
0.1
R570
10K
C549
42V3300
C548
42V4700
C554
0.1
C553
0.1
C544
50V100
R568
150
C543
1000P R569
1.5K
C560
50V10
C522
0.047
C569
0.047
R537
10
R538
10
DGND
SYNC
SYS6V
SUB+B
R609
1.5K
D561
B0BA01100004
C572
50V100 R560
150
C573
1000P R561
3.9K
D509 CN601
R577
1.5K
JK502
JK501
R571
2.2K
HELP
L505
G0AR76Y00001
L502
G0AR76Y00001
C535
1000P
2
4
6
7
5
3
1
2
4
6
7
5
3
1
8
SCHEMATIC DIAGRAM-2
POWER CIRCUIT
TO
TRANSFORMER
CIRCUIT
(CN503) ON
SCHEMATIC
DIAGRAM-3
1
2
3
4
5
6
10
8
7
9
TO
AMPLIFIER
CIRCUIT
(H601/W601) ON
SCHEMATIC
DIAGRAM-4
1
2
3
4
5
6
TO
AC INLET
CIRCUIT
(CN502) ON
SCHEMATIC
DIAGRAM-3
F Rch
S Lch
F Lch
S Rch
CENTER
-
+
-
+
-
+
-
+
-
+
15
14
3
12
11
10
2
4
6
8
9
7
5
13
1
1
2
3
4
TO
AMPLIFIER
CIRCUIT
(H603/W603) ON
SCHEMATIC
DIAGRAM-4
: -B SIGNAL LINE
:+B SIGNAL LINE
FP1
K5G502AA0002
C530
1000P
FP1 5A
R565 3.9K
Q512
B1BCCG000023
VOLTAGE REGULATOR
R610
4.7
R600
47K
R601
47K
D599 B0FBAM000009 D598 B0FBAM000009
D597 B0FBAM000009
R621 10
L501
G0AR76Y00001
R622 10
R625 10
C527
0.047
C526
0.047
C528
0.047
20
SB-WA17E / SB-WA17EB