Panasonic SA-AKX14LM-K Bedienungsanleitung

Unauthorized copying and distribution is a violation

of law.

PMX1206001CE

CD Stereo System

Model No. SA-AKX14LM-K

Product Color: (K)...Black Type

Please refer to the original service manual for:

CD Mechanism Unit (BRS1C), Order No. PSG1102001CE

Speaker system SB-AKX14LM-K, Order No. PMX1206002CE

Unauthorized copying and distribution is a violation

of law.

1 Safety Precautions

1.1. General Guidelines

1.3. Before Repair and Adjustment

1.4. Protection Circuitry

1.5. Caution For Fuse Replacement

1.6. Safety Parts Information

2 Warning

2.1. Prevention of Electrostatic Discharge (ESD)

to Electrostatic Sensitive (ES) Devices

2.2. Precaution of Laser Diode

2.3. Service caution based on Legal restrictions

2.4. Handling Precautions for Traverse Unit

3 Service Navigation

3.1. Service Information

4 Specifications

5 General/Introduction

5.1. Media Information

6 Location of Controls and Components

6.1. Remote Control Key Button Operation

6.2. Main Unit Key Button Operation

7 Installation Instructions

7.1. Speaker and A/C Connection

8 Service Mode

8.1. Cold-Start

8.2. Doctor Mode Table

Please refer to the original service manual for:

CD Mechanism Unit (BRS1C), Order No. PSG1102001CE

Speaker system SB-AKX14LM-K, Order No. PMX1206002CE

Nota: El idioma original de este Manual de Servicio es en idioma inglés, sin embargo algunas notas aquí

mencionadas serán escritas en español para mejor descripción para Centros de Servicio de México.

8.3. Reliability Test Mode (CD Mechanism Unit

(BRS1C))

8.4. Self-Diagnostic Mode

8.5. Self-Diagnostic Error Code Table

8.6. Sales Demonstration Lock Function

9 Troubleshooting Guide

9.1. Part Location

9.2. Troubleshooting Guide for F61 and/or F76

9.3. D-Amp IC Operation & Control

10 Service Fixture & Tools

11 Disassembly and Assembly Instructions

11.1. Disassembly Flow Chart

11.2. Main Components and P.C.B. Locations

11.3. Disassembly of Top Cabinet

11.4. Disassembly of Tuner P.C.B.

11.5. Disassembly of Front Panel Unit

11.6. Disassembly of Panel P.C.B.

11.7. Disassembly of Remote Sensor P.C.B.

11.8. Disassembly of USB P.C.B.

11.9. Disassembly of LCD P.C.B.

11.10. Disassembly of CD Lid

11.11. Disassembly of Main P.C.B.

11.12. Replacement of Voltage Regulator Transistor

(Q2022)

11.13. Replacement of Audio Digital Amp IC

(IC5902)

11.14. Disassembly of SMPS P.C.B.

11.15. Replacement of Switching Regulator IC

hh(IC5701)

11.16. Replacement of Rectifier Diode (D5702)

11.17. Replacement of Rectifier Diode (D5801)

11.18. Replacement of Rectifier Diode (D5802)

11.19. Replacement of Regulator Diode (D5803)

11.20. Disassembly of CD Mechanism Unit (BRS1C)

11.21. Disassembly of Rear Panel

12 Replacement of Traverse Unit

12.1. Disassembly of Traverse Unit

12.2. Assembly of Traverse Unit

12.3. Disassembly of CD Servo P.C.B.

13 Service Position

13.1. Checking and Repairing of Main P.C.B.

13.2. Checking and Repairing of Panel P.C.B.

13.3. Checking and Repairing of LCD P.C.B.-

13.4. Checking and Repairing of SMPS P.C.B.

13.5. Checking and Repairing of CD Servo P.C.B.-

14 Simplified Block Diagram

14.1. Overall Simplified Block Diagram

14.2. Power Block Diagram

15 Block Diagram

15.1. Servo & System Control

15.2. Audio

15.3. Power Supply

16 Wiring Connection Diagram

17 Schematic Diagram

17.1. Schematic Diagram Notes

17.2. CD Servo Circuit

17.3. Main Circuit

17.4. Panel, LCD, Remote Sensor & USB Circuit

17.5. Tuner

17.6. SMPS Circuit

18 Printed Circuit Board

18.1. CD Servo P.C.B.

18.2. Main & Tuner P.C.B.

18.3. Panel, LCD, Remote Sensor & USB P.C.B.

18.5. SMPS P.C.B.

19 Appendix Information of Schematic Diagram

19.1. Voltage & Waveform Chart

19.2. Illustration of ICs, Transistor and Diode

19.3. Terminal Function of ICs

20 Exploded View and Replacement Parts List

20.1. Exploded View and Mechanical replacement

Part List

20.2. Electrical Replacement Part List

1 Safety Precautions

1.1. General Guidelines

1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or

damaged by the short circuit.

2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly

installed.

3. After servicing, carry out the following leakage current checks to prevent the customer from being exposed to shock hazards.

1.1.1. Leakage Current Cold Check

1. Unplug the AC cord and connect a jumper between the two prongs on the plug.

2. Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on

the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the

chassis, the reading should be between 1Mand 5.2M.

When the exposed metal does not have a return path to the chassis, the reading must be

1.1.2. Leakage Current Hot Check

1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.

2. Connect a 1.5k, 10 watts resistor, in parallel with a 0.15F capacitors, between each exposed metallic part on the set and a

good earth ground such as a water pipe, as shown in Figure 1.

3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.

4. Check each exposed metallic part, and measure the voltage at each point.

5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.

6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent)

may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. In case a measurement is outside of the

limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is

returned to the customer.

Figure 1

1.3. Before Repair and Adjustment

Disconnect AC power to discharge unit AC Capacitors as such (C5700, C5701, C5703, C5708)

through a 10 , 10 W resistor to ground.

Caution:

DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.

After repairs are completed, restore power gradually using a variac, to avoid overcurrent.

Current consumption at ~127 V ac /60 Hz in Power ON, FM Tuner, No Signal, volume minimal mode should be

~ 500 mA (PH).

Current consumption at 127 Vac, 60 Hz in Power ON, FM Tuner, No Signal, volume minimal mode should be ~ 500 mA.

1.4. Protection Circuitry

The protection circuitry may have operated if either of the following conditions are noticed:

sNo sound is heard when the power is turned on.

sSound stops during a performance.

The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are

“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.

If this occurs, follow the procedure outlines below:

1. Turn off the power.

2. Determine the cause of the problem and correct it.

3. Turn on the power once again after one minute.

Note:

When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.

1.5. Caution For Fuse Replacement

1.6. Safety Parts Information

Safety Parts List:

There are special components used in this equipment which are important for safety.

These parts are marked by in the Schematic Diagrams, Exploded View & Replacement Parts List. It is essential that these

critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire or other hazards. Do not modify the

original design without permission of manufacturer.

Modelo: SC-AKX14LM-

INSTRUCTIVO RQTM0187

RKMX1011Z-KL

RD-DDL081-PX

F1BAF1020020

ERZV05Z471CS

PCB SMPS

F0CAF224A105

B3PBA0000579

RJB3568A-1

GAB. MET. SIN DOBLAR

G0B612H00004

REAR PANEL

CAPACITOR DE AC

Numero de Parte Seguridad

TRANSFORMADOR DE PODER

TRANSFORMADOR DE

RESPALDO

CABLE TOMACORRIENTE.

CONECTOR TOMACORRIENTE

OPTOACOPLADOR

BRS1C CD UNIT

BOBINA PRIMARIO

FUSIBLE PRIMARIO

CAPACITOR DE AC

ZNR

Nombre del componente

K2CB2YY00059

ETS19AB2E6AG

K5D802APA008

K2AB2B000007

G4DYZ0000057

RXTM0002E-A

F1BAF471A013

F0CAF104A105

2 Warning

2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatic Sensitive

(ES) Devices

Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec-

trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and

semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage

caused by electrostatic discharge (ESD).

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your

body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,

which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as alumi-

num foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static (ESD protected)” can

generate electrical charge sufficient to damage ES devices.

5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most

replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or compara-

ble conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material

to the chassis or circuit assembly into which the device will be installed.

Caution:

Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the

brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) suf-

ficient to damage an ES device).

2.2.Precaution of Laser Diode

Caution:

This product utilizes a laser diode with the unit turned “on”, invisible laser radiation is emitted from the pickup lens.

Wavelength: 790 nm (CD)

Maximum output radiation power from pickup: 100 PW/VDE

Laser radiation from the pickup unit is safety level, but be sure the followings:

1. Do not disassemble the pickup unit, since radiation from exposed laser diode is dangerous.

2. Do not adjust the variable resistor on the pickup unit. It was already adjusted.

3. Do not look at the focus lens using optical instruments.

4. Recommend not to look at pickup lens for a long time.

2.3.Service caution based on Legal restrictions

2.3.1.General description about Lead Free Solder (PbF)

The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this

equipment in considering the globally environmental conservation.

The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin

(Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86qF) more than that

of the normal solder.

Definition of PCB Lead Free Solder being used

Service caution for repair work using Lead Free Solder (PbF)

• The lead free solder has to be used when repairing the equipment for which the lead free solder is used.

(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)

• To put lead free solder, it should be well molten and mixed with the original lead free solder.

• Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.

• Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt the

lead free solder.

• Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30 degrees

C (662±86qF).

Recommended Lead Free Solder (Service Parts Route.)

• The following 3 types of lead free solder are available through the service parts route.

RFKZ03D01K-----------(0.3mm 100g Reel)

RFKZ06D01K-----------(0.6mm 100g Reel)

RFKZ10D01K-----------(1.0mm 100g Reel)

Note

* Ingredient: tin (Sn), 96.5%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%

The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.

(See right figure)

2.4.Handling Precautions for Traverse Unit

The laser diode in the optical pickup unit may break down due to static electricity of clothes or human body. Special care must be

taken avoid caution to electrostatic breakdown when servicing and handling the laser diode in the traverse unit.

2.4.1.Cautions to Be Taken in Handling the Optical Pickup Unit

The laser diode in the optical pickup unit may be damaged due to electrostatic discharge generating from clothes or human body.

Special care must be taken avoid caution to electrostatic discharge damage when servicing the laser diode.

1. Do not give a considerable shock to the optical pickup unit as it has an extremely high-precise structure.

2. To prevent the laser diode from the electrostatic discharge damage, the flexible cable of the optical pickup unit removed

should be short-circuited with a short pin or a clip.

3. The flexible cable may be cut off if an excessive force is applied to it. Use caution when handling the flexible cable.

4. The antistatic FPC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the flexi-

ble cable, cut off the antistatic FPC.

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