Panasonic sa akx58 78 service manual

Page 1

PSG1403011CE

Service Manual

CD Stereo System

Model No. SA-AKX58PH
SA-AKX58PN
SA-AKX58GN
SA-AKX78PH
SA-AKX78PN

Product Color: (K)...Black Type

The illustration shows SC-AKX78.
Remote
Control
SB-AKX78 SB-AKW78 SB-AKX78

messes

Ififimm

Please refer to the original service manual for:

0 CD Mechanism Unit, Order No. PSG1303059AE

0 Speaker system SB-AKX78PN-K, Order No. PSG1403012CE

0 Speaker system SB-AKW78PN-K, Order No. PSG1403012CE (For AKX78)

A WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public,

It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians Any attempt to service
or repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

IMPORTANT SAFETY NOTICE
There are special components used in this equipment which are important for safety. These parts are marked by A in the Schematic
Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced
with manufacturers specified parts to prevent shock, fire or other hazards Do not modify the original design without permission of

manufacturer.

TABLE OF CONTENTS

PAGE

1 Safety Precautions ----------------------------------------------- 3
1.1. General Guidelines -------
1.2. Before Use (For PH only)-
1.3. Before Repair and Adjustment
1.4. Protection Circuitry ------------
1.5. Power Supply using SMPS -
1.6. Safety Parts Information

2 Warning -----------------------------
2.1. Prevention of Electrostatic Discharge (ESD)

to Electrostatically Sensitive (ES) Devices ---------- 8
2.2. Precaution of Laser Diode ------------------------------- 8
2.3. General description about Lead Free Solder

(PbF) --------------------------------------------

2.4. Handling Precautions for Traverse Unit

Panasonica

PAGE
breakdown

electrostatic

2.5. Grounding for
prevention ------

3 Service Navigation -
3.1. Service Information

4 Specifications --------------

5 Location of Controls and Components--
5.1. Remote Control Key Button Operation
5.2. Main Unit Key Button Operation ---------

6 Service Mode--

6.1. Cold-Start -

6.2. Sales Demonstration Lock Function
6.3. Service Mode Table ---------------------
6.4. Doctor Mode Table ------
6.5. Self-Diagnostic Mode --

© Panasonic Corporation 2014. All rights reserved.
Unauthorized copying and distribution is a violation
of law.

Page 2

6.6.

7 Troubleshooting Guide ....................
8 Disassembly and Assembly Instructions-

8.1.
8.2.
8.3.
8.4.
8.5.
8.6.

8.7.
8.8.
8.9.
8.10.
8.11.

8.12.
8.13.

9 Service Position --------------------------------

9.1.
9.2.

10 Block Diagram ------

10.1.
10.2.
10.3.

11 Wiring Connection Diagram --
12 Schematic Diagram ______________

12.1.
12.2.
12.3.
12.4.
12.5.
12.6.
12.7.
12.8.
12.9.
12.10.
12.11.

13 Printed Circuit Board

13.1.
13.2.
13.3.
13.4.

14 Voltage and Waveform Measurement

14.1.
14.2.

15 Exploded View and Replacement Parts List

15.1.
15.2.
15.3.
15.4.
15.5.
15.6.

Self-Diagnostic Error Code Table

Type of Screws -----------------------------
Disassembly Flow Chart ---------------------
Main Components and P.C.B. Locations
Disassembly of Top Cabinet ----------
Disassembly of Front Panel Unit
Disassembly of Panel P.C.B. and Music Port
P.C.B. ------------------------------------
Disassembly of Bluetooth P.C.B -
Disassembly of USB P.C.B. --
Disassembly of Rear Panel.-- --28
Disassembly of Main P.C.B. --------------------------- 29
Disassembly of SMPS P.C.B. and Voltage
Selector P.C.B. ---------------------------------
Disassembly of CD Mechanism Unit
Disassembly of CD Interface P.C.B.

Checking of Panel P.C.B. and Main P.C.B. -- --33

Checking of SMPS P.C.B. and Voltage

Selector P.C.B. -------------------------------------------- 33
---35

System Control -
Audio -----------
Power Supply

Schematic Diagram Notes
Main (CD Motor Driver) Circu
Main (USB EMMC) Circuit-
Main (SOC I/O Expander) Circuit
Main (Damp) Circuit -----------------
Main (Connector) Circuit

(

(

(

Main DSP) Circuit --------
Main Tuner AUX) Circuit --
Main VREG Fan) Circuit---
Panel Circuit ---------------------------------
USB, Music Port & CD Interface Circuit-

Main P.C.B. (Side A)-
Main P.C.B. (Side B)-
Panel, USB & Music Port P.C.B
CD Interface P.C.B. -------------

Voltage Measurement ...............
Waveform Chart ...............................

Cabinet Parts Location 1
Cabinet Parts Location 2---
Packaging (SC-AKXSBGN/PH/PN-K) -
Packaging (SC-AKX78PH/PN-K)
Mechanical Replacement Part List -
Electrical Replacement Parts List -------------------- 75