Panasonic SB-WA1000E User manual

nSPEAKER SECTION
Type 1 way 2 speaker system
Bass-reflex type
Speaker
Woofer (1 & 2) 17 cm cone type x 2
Sound pressure level 83 dB/W (1.0 m)
Frequency range (with amp) 28 Hz - 300 Hz (at -16 dB)
32 Hz - 240 Hz (at -10 dB)
nAMPLIFIER SECTION
Output power 100 W (6 Ω)x2(THD0.9%)
Input sensitivity / Input Impedance 300 mV/33 kΩ(RCA jack)
Phase switching NORMAL/REVERSE
Low pass filter 50 Hz - 200 Hz Variable
nGENERAL
Power supply AC 230 V, 50Hz
Power consumption 150 W
Dimensions (W x H x D) 254 mm x 496 mm x 500 mm
Mass Approx. 22 kg
Power consumption in input
standby condition:
1.5 W
1 Safety Precautions 3
©2006 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
SB-WA1000E
Colour
(S)... Silver Type
Note :
Specifications are subject to change without notice.
nSystem : SB-TP1000E-S Speaker System : SB-FS1000E-S
Active subwoofer : SB-WA1000E-
S
Active subwoofer : SB-
WA1000GN-S
SB-TP1000E-S consists of SB-FS1000E-S (x 1) & SB-WA1000E-S (x
1)
SB-FS1000E-S consists of SB-FC1000LE-S (x 1), SB-FC1000RE-S
(x 1) & SB-HS1000E-S (x 2)
Active Subwoofer System
Specification
CONTENTS
Page Page
ORDER NO. MD0607260CE

1.1. General Guidelines 3
1.2. Before Repair and Adjustment 4
1.3. Protection Circuitry 4
2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 5
3 About Lead-Free Solder (PbF) 6
3.1. Service caution based on legal restrictions 6
4 Accessory 7
5 Operating Instructions Procedures 8
5.1. Subwoofer operation 8
6 Assembling and Disassembling 11
6.1. Caution 11
6.2. Disassembly flow chart 11
6.3. Disassembly of Front net frame unit 12
6.4. Disassembly of Woofer (1) 12
6.5. Disassembly of Rear net frame unit 13
6.6. Disassembly of Woofer (2) 13
6.7. Disassembly and checking of Level control P.C.B and LED
P.C.B 14
6.8. Disassembly of the Stand base 16
6.9. Disassembly of Amp unit 16
6.10. Disassembly of Rear panel assembly 18
6.11. Disassembly of Fan unit 18
6.12. Disassembly and checking of AC inlet P.C.B, Power P.C.B
and Transformer P.C.B 19
6.13. Replacement of the Power IC 20
7 Voltage Measurement and Waveform Chart 21
7.1. Voltage Measurement 21
7.2. Waveform Chart 22
8 Connection of the Speaker wiring 23
9 Wiring Connection Diagram 24
10 Block Diagram 25
11 Notes Of Schematic Diagram 27
12 Schematic Diagram 29
12.1. Power Circuit 29
12.2. Level Control Circuit, Transformer Circuit and LED Circuit
30
12.3. AC Inlet Circuit 31
13 Printed Circuit Board 33
13.1. Power P.C.B 33
13.2. Level Control P.C.B, LED P.C.B, Transformer P.C.B and
AC Inlet P.C.B 34
14 Illustration of IC's, Transistors and Diodes 35
15 Exploded view 36
15.1. Cabinet Parts Location 36
15.2. Packaging 38
16 Replacement Parts List 39
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SB-WA1000E

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 checks 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 .
Figure 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 re-checked before it is returned
to the customer.
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SB-WA1000E

1.2. Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C508 & C703 through a 10Ω, 1W 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 200~700 mA.
1.3. 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.
· Sound 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.
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SB-WA1000E

2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage
caused by electro static discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equiped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equiped with ES devices, place the assembly on a conductive surface such as aluminium
foil, to prevent electrostatic charge build up or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can
generate electrical charge to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or
comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize body motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing
together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to
damage an ES device).
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SB-WA1000E

3 About Lead-Free Solder (PbF)
3.1. Service caution based on legal restrictions
3.1.1. General description about Lead Free Solder (PbF)
The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this
equipment in considering the globally environmental conservation.
The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin
(Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86°F) more than that
of the normal solder.
Definition of PCB Lead Free Solder being used
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)
Service caution for repair work using Lead Free Solder (PbF)
· The lead free solder has to be used when repairing the equipment for which the lead free solder is used.
(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)
· To put lead free solder, it should be well molten and mixed with the original lead free solder.
· Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.
· Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt
the lead free solder.
· Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30
degrees C (662±86°F).
Recommended Lead Free Solder (Service Parts Route.)
· The following 3 types of lead free solder are available through the service parts route.
RFKZ03D01K-----------(0.3mm 100g Reel)
RFKZ06D01K-----------(0.6mm 100g Reel)
RFKZ10D01K-----------(1.0mm 100g Reel)
Note
* Ingredient: tin (Sn), 96.5%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%
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SB-WA1000E

4 Accessory
AC mains lead.... 1 pc
Monaural connection
cable (5 m).... 1 pc
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SB-WA1000E

5 Operating Instructions Procedures
5.1. Subwoofer operation
5.1.1. Connection of the Speaker Cables
Connections
Connect to a receiver or amplifier (a) with 6-Ωimpedance for the front, center, and surround speakers, and a pin-type output
terminal for an active subwoofer. You cannot connect these speakers to any equipment other than this amplifier.
Before connection
Turn off the other equipment.
Do not connect the AC power supply cord until all other cables and cords are connected.
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SB-WA1000E

Subwoofer
· Connect using the included monaural connection cable (e) to the receiver or amplifier’s subwoofer output terminal.
· Connect the AC mains lead (f) to the household AC outlet (g).
The included AC mains lead is for use with this unit only.
Do not use it with other equipment.
Note:
· Do not move the speaker while the speaker cables are connected.
This may cause a short circuit.
· Make sure to bundle the speaker cable with a string etc. when relocating the speaker cables.
Location
The front and surround speakers should be placed approximately the same distance from the listening position. The angles in the
diagram are approximate.
Front speakers (Including center channel) (left and right)
· Put the front speakers on either side of the television.
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SB-WA1000E

This system incorporates a center speaker in each of its front speakers. (a)
Using a unique system from Panasonic that reflects the principles of ausitory psychology, the sound seems to come from within the
TV screen, letting you enjoy sound and images with a heigtened sense of integration even if you are not seated directly in front of
the TV set.
· It may be hard for the intended effect to be achieved under some listening and viewing conditions and with some of the
playback sources.
· The effect will not be satisfactorily yielded if the left front speaker is installed on the right and the right front speaker on the left.
· The sound quality will not be satisfactorily yielded if the center speakers are hidden from listener’s view. (b)
· Do not position the front speakers so that they face outward or overly inward.
Place them so that they are facing more or less straight ahead. (c)
Surround speakers (left and right)
· Put the surround speakers to the side of or slightly behind the seating area.
Active subwoofer
· Place it at least 5 cm from the wall as it has a bass reflex port in the rear.
· Depending on speaker location, the low-range frequency characteristics will vary. When placed in the corner of a room, the
volume will increase accordingly.
Caution
Do not attach the subwoofer to walls or ceilings.
How you set up your speakers can affect the bass and the sound field.
Note the following points.
· Place them on a flat, level secure surface.
Use spacers or similar items to stop them from rocking.
· Placing speakers too close to walls, and corners can result in excessive bass.
· Cover walls and windows with a thick curtain.
· Do not place anything on top of the subwoofer.
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SB-WA1000E