Panasonic sa akx220p service manual

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PSG1601001CE

Service Manual

CD Stereo System

Model No. SA-AKX220PN
SA-AKX220PS
SA-AKX440PN
SA-AKX440PS

Product Co|or: (K)...Black Type
(W)...White Type (For SA-AKX220)

The illustration shows SC-AKX440.

SB-AKX440

S B-AKX440

Please refer to the original service manual for:

0 CD Mechanism Unit (BRS120) , Order No. PSG1303059AE
0 Speaker system SB-AKX220PN, Order No. PSG16010020E
0 Speaker system SB-AKX440PN, Order No. PSG16010026E

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 pans 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 Repair and Adjustment
1.3. Protection Circuitry ---------------------
1.4. Power Supply using SMFS Module
1.5. Safety Parts Information

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

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

(PbF) ---------------------------------------------------------- 9
2.4. Handling Precautions for Traverse Unit -------------- 9

Panasonici

PAGE

2.5. Grounding for electrostatic breakdown
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. Doctor Mode Table -----------------------
6.4. Self-Diagnostic Mode ----------------------------------- 19

© Panasonic Corporation 2016. All rights reserved.
Unauthorized copying and distribution is a violation
of law.

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6.5. Self-Diagnostic Error Code Table
7 Troubleshooting Guide -----------------------
7.1. No Power or No Display----
7.2. Bluetooth® Pairing Failure-
7.3. No Key Function --------------
7.4. No Remote Control Function-
7.5. USB Device Cannot Detect
7.6. No Output Sound -------------
7.7. Check Point ----------------------------------
8 Disassembly and Assembly Instructions-
8.1. Types of Screws"-
8.2. Disassembly Flow Chan-
8.3. Main Components and PCB. Locations
8.4. Disassembly of Top Cabinet -----
8.5. Disassembly of Front Panel Uni
8.6. Disassembly of Panel P.C.B.-
8.7. Disassembly of USB P.C.B. --
8.8. Disassembly of Music Port P.C.B. (For
AKX440) ------------------------
8.9. Disassembly of Rear Panel
8.10. Disassembly of Main P.C.B. --
8.11. Disassembly of SMPS Module -
8.12. Disassembly of CD Mechanism Unit --
8.13. Disassembly of CD Interface P.C.B.---
9 Service Position -------------------------------------------
9.1. Checking of Panel PCB. and Main P.C.B.
9.2. Checking of SMPS Module --
10 Block Diagram --------------------------
10.1. System Control -
10.2. Audio -----------
10.3. Power Supply
11 Wiring Connection Diagram --
12 Schematic Diagram --------------
12.1. Schematic Diagram Notes-
12.2. Main (Micon) Circuit (1/3) --
12.3. Main (Micon) Circuit (2/3) --
12.4. Main (Micon) Circuit (3/3) --
12.5. Main (USB) Circuit --------
12.6. Main (Tuner AUX) Circuit
(
(
(

12.7. Main DSP Bluetooth) Circuit
12.8. Main Damp) Circuit ------------
12.9. Main Voltage Regulator) Circuit -
12.10. Panel Circuit --------------------------------------
12.11. USB, CD Interface and Music Port Circuit
13 Printed Circuit Board
13.1. Main P.C.B. ------
13.2. Panel, USB P.C.B.. CD Interface P.C.B. (For
AKX220PN/PS, AKX440PN/PS) and Music

Port P.C.B (For AKX440PN/PS) -----

14 Voltage and Waveform Measurement
14.1. Voltage Measurement----

15 Exploded View and Replacement Parts List
15.1. Cabinet Parts Location 1 --------------------
15.2. Cabinet Parts Location 2 -----------------
15.3. Packaging (For SC-AKX220PN/PS) --
15.4. Packaging (For SC-AKX440PN/PS) --
15.5. Mechanical Replacement Part List
15.6. Electrical Replacement Parts List -------------------- 67