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SB-WA870EG Schematic ( PDF Datasheet ) - Panasonic

Teilenummer SB-WA870EG
Beschreibung Active Subwoofer System Service Manual
Hersteller Panasonic
Logo Panasonic Logo 




Gesamt 30 Seiten
SB-WA870EG Datasheet, Funktion
ORDER NO. MD0403127C2
Active Subwoofer System
SB-WA870EB
SB-WA870EG
Colour
(S)...Silver Type
Specification
n Active subwoofer
Type
Speaker unit
Woofer
Output sound pressure
Frequency range
Dimensions (W x H x D)
Mass
1 way, 1 speaker system (Bass
reflex)
Impedance 4
20 cm Cone type
84 dB/W (1.0 m)
34 Hz-220 Hz (-16 dB)
38 Hz-190 Hz (-10 dB)
248 x 417 x 476.6 mm
16.4 kg
n General
Power consumption
Power supply
Continental Europe and Russia
The United Kingdom, Australia and
N.Z.
Power consumption in standby
mode
390V
AC 230V, 50Hz
AC 230V-240V, 50Hz
0.7 W
Notes :
1. Specifications are subject to change without notice.
2. Mass and dimensions are approximate.
SB-HT870P-S consists of :
SB-PF921P-S x 2, SB-PS921P-S x 2 and SB-PC920P-S x 1
n System : SC-HT870 (E)
Music Center: SA-HT870 (E)
Satellite Speakers: SB-HT870 (P)
Active Subwoofer: SB-WA870 (EG)
n System : SC-HT870 (EB)
Music Center: SA-HT870 (EB)
Satellite Speakers: SB-HT870 (P)
Active Subwoofer: SB-WA870 (EB)
n System : SC-HT870 (EG)
Music Center: SA-HT870 (EG)
Satellite Speakers: SB-HT870 (P)
Active Subwoofer: SB-WA870 (EG)
CONTENTS
1 Safety Precautions
1.1. GENERAL GUIDELINES
Page
3
3
2 Handling the Lead-free Solder
2.1. About lead free solder (PbF)
Page
4
4
© 2004 Panasonic AVC Networks Singapore Pte.
Ltd. All rights reserved. Unauthorized copying and
distribution is a violation of law.
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SB-WA870EG Datasheet, Funktion
SB-WA870EB / SB-WA870EG
6 Disassem bly Procedure
“ATTENTION SERVICER”
Some chassis components may have sharp edges.
Be careful when disassembling and servicing.
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.
Contents
· Disassembly of the Speaker Unit
· Main Component Replacement Procedures
6.1. 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.
6

6 Page









SB-WA870EG pdf, datenblatt
SB-WA870EB / SB-WA870EG
6.3. Main Component Replacement Procedures
6.3.1. Replac ement of the Power ICs and Transistors
Step 1: Desolder the Power IC and Transistor terminals.
Step 4: Replacement of the Power IC (IC601) and Transistors
(Q601 & Q602).
Steps 2 & 3: Remove the screws.
Steps 5: Desolder the Power IC and Transistor terminals.
Steps 6 & 7: Remove the screws.
12

12 Page





SeitenGesamt 30 Seiten
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