Panasonic SB-AKX78PN, SB-AKW78PN Service Manual
© Panasonic Corporation 2014. All rights reserved.
Unauthorized copying and distribution is a violation of
law.
PSG1403012CE
Speaker System
Model No. SB-AKX78PN
SB-AKW78PN
Product Color : (K)... Black Type
TABLE OF CONTENTS
PAGE PAGE
1 Specifications ----------------------------------------------------- 2
2 Disassembly and Assembly Instructions ---------------- 3
2.1. Front Speakers (SB-AKX78PN-K) -------------------- 4
2.2. Subwoofer Speaker (SB-AKW78PN-K)-------------- 7
3 Wiring Connection Diagram ---------------------------------- 9
3.1. Front Speakers (SB-AKX78PN-K) -------------------- 9
3.2. Subwoofer Speaker (SB-AKW78PN-K)-------------- 9
4 Exploded View and Replacement Parts List -----------11
4.1. Front Speakers (SB-AKX78PN-K) Cabinet
Parts Location---------------------------------------------11
4.2. Subwoofer Speaker (SB-AKW78PN-K)
Cabinet Parts Location----------------------------------12
4.3. Packaging (For SC-AKX78)----------------------------13
4.4. Packaging (For SC-AKX58)----------------------------14
4.5. Replacement Parts List ---------------------------------15
2
1 Specifications
Front Speakers (SB-AKX78PN-K)
Speaker unit(s)
Super Woofer 20 cm cone type
Woofer 8 cm cone type
Tweeter 6 cm cone type
Impedance Hight 3 Ω / Low 3 Ω
Dimensions (W x H x D) 300 mm x 401 mm x 292 mm
Mass 6.1 kg
Subwoofer Speaker (SB-AKW78PN-K)
Speaker unit(s)
Super Woofer 25 cm Cone type
Impedance 2 Ω
Dimensions (W x H x D) 360 mm x 401 mm x 271 mm
Mass Aprox. 7.7 kg
Notes:
1. Specifications are subject to change without notice.
Mass and dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum analyzer.
3
2 Disassembly and Assembly Instructions
Caution Note:
• This section describes procedures for checking the operation and replacing the main components.
• For reassembly after operation checks or replacement, reverse the respective procedures.
• Special reassembly procedures are described only when required.
• Before carrying out the disassembly process, please ensure all the safety precautions & procedures are followed.
• During the disassembly and/or assembly process, please handl e with care as there may be chassis components with sharp
edges.
• During replacement of component parts, please refer to the section of “Replacement Parts List” as described in the service manual.
• Select items from the following indexes when disassembly or replacement are required.
Front Speakers (SB-AKX78PN-K)
• Disassembly of Front Panel Block
• Disassembly of Tweeter Speaker (SP1)
• Disassembly of Full Range Speaker (SP2)
• Disassembly of Woofer Speaker (SP3)
Woofer Speaker (SB-AKW78PN-K)
• Disassembly of Front Panel Block
• Disassembly of Woofer Speaker (SP61)
• Disassembly of Lighting Wire P.C.B. Assembly
4
2.1. Front Speakers (SB-AKX78PN-K)
2.1.1. Disassembly of Front Panel Block
Step 1 : Remove 4 screws.
Step 2 : Insert flathead screwdriver into the grooves.
Step 3 : Apply light force to push open Front Panel Block as
arrow shown.
Step 4 : Insert a steel rule between the F ront Panel Block and
Speaker Cabinet Assembly.
Step 5 : Detach Front Panel Block slightly.
Caution : Do not exert strong force as it may damage the
Front Panel Block.
Step 6 : Detach speaker wire.
Step 7 : Remove Front Panel Block.
5
2.1.2. Disassembly of Tweeter Speaker
(SP1)
• Refer to “Disassembly of Front Panel Block”
Step 1 : Remove 4 screws.
Step 2 : Remove Tweeter Speaker (SP1).
2.1.3. Disassembly of Full Range Speaker
(SP2)
• Refer to “Disassembly of Front Panel Block”
Step 1 : Remove 4 screws.
Step 2 : Slightly lift up Full Range Speaker (SP2).
Step 3 : Detach speaker wire.
Step 4 : Remove Full Range Speaker (SP2).
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