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PDF ( 数据手册 , 数据表 ) SB-WA870EB

零件编号 SB-WA870EB
描述 Active Subwoofer System Service Manual
制造商 Panasonic
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SB-WA870EB 数据手册, 描述, 功能
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-WA870EB pdf, 数据表
SB-WA870EB / SB-WA870EG
Step 7: Use the Screwdriver slightly lift up the Net Frame as
arrow shown.
Step 8: Take note of the bosses which glued to the unit .
· Assembly of Net Frame.
Replace the Net Frame firmly back into the cabinet.
Clean up all the glue at the 6 Boss points and
replace with the normal glue.
Step 9: Remove the Net Frame from the cabinet of speaker.
Step 10: Remove all the screws from the subwoofer.
8







SB-WA870EB equivalent, schematic
SB-WA870EB / SB-WA870EG
9 Schematic Diagram
(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.
16










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SB-WA870EGActive Subwoofer System Service ManualPanasonic
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