Panasonic SA-MAX500LMK Manuale utente

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PMX1302001CE

CD Stereo System

Model No. SA-MAX500LMK

Product Color: (K)...Black Type

TABLE OF CONTENTS

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 Electrostatically Sensitive (ES) Devices

2.2. Precaution of Laser Diode

2.3. Service caution based on Legal restrictions

2.4. Handling Precautions for Traverse Unit

2.5. Grounding for electrostatic breakdown

prevention

3 Service Navigation

3.1. Service Information

3.2. Firmware Update Procedure

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

8.3. Reliability Test Mode (CD Mechanism Unit)

Please refer to the original service manual for:

CD Mechanism Unit, Order No. PSG1201019AE

Speaker system SB-MAX500LMK, Order No. PMX1302002CE

SB-MAX500 L SB-MAX500 R

SA-MAX500

Nota: El idioma original de este Manual de Servicio es en idioma inglés, sin embargo algunas notasaquí mencionadas serán escritas

en español para mejor descripción para Centros de Servicio de México.

8.4. Self-Diagnostic Mode

8.5. Self-Diagnostic Error Code Table

8.6. Sales Demonstration Lock Function

9 Troubleshooting Guide

10 Disassembly and Assembly Instructions

10.1. Screw Types

10.2. Disassembly Flow Chart

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

10.4. Disassembly of Top Cabinet

10.5. Disassembly of Front Panel Unit

10.6. Disassembly of FL Display P.C.B.

10.8. Disassembly of Control P.C.B.

10.10. Disassembly of Volume P.C.B.

10.11 Disassembly of Volume Jog Led

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

10.13. Disassembly of USB P.C.B.

10.14. Disassembly of Mic P.C.B.

10.16. Disassembly of CD Lid

10.17. Disassembly of Rear Panel

10.18. Disassembly of CD Mechanism Unit

10.19. Disassembly of Main P.C.B.

10.20. Disassembly of Digital Amplifier IC

10.21. Disassembly of SMPS P.C.B.

10.22. Replacement of Switching Regulator (Q5700)

10.23. Replacement of Rectifier Diode (D5801)

10.24. Replacement of Rectifier Diode (D5802)

10.25. Disassembly of CD Interface P.C.B.

11 Service Position

11.1. Checking and Repairing of FL Display P.C.B.,

Control P.C.B., Volume P.C.B., Mic P.C.B. and

USB P.C.B.

11.2. Checking and Repairing of Main P.C.B. (Side

11.3. Checking and Repairing of Main P.C.B. (Side

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

12 Block Diagram

12.1. Servo & System Control

12.2. IC Terminal Chart

12.3. Audio

12.4. Power Supply

13 Wiring Connection Diagram

14 Schematic Diagram

14.1. Schematic Diagram Notes

14.2. MAIN (CD Servo/Micon/D-Amp) Circuit

14.3. FL Display Circuit

14.4. Volume Circuit

14.5. Control & USB Circuit

14.6. Mic Circuit

14.7. Remote Sensor

14.8. SMPS Circuit

14.9. Control Jog LED, Volume Jog LED & CD

Interface Circuit

15 Printed Circuit Board

15.1. Main P.C.B.

15.2. FL Display & Volume P.C.B.

15.3. Control, Mic, USB, Remote Sensor.

15.4. SMPS

15.5. Control Jog LED, Volume Jog LED & CD

Interface P.C.B.

16 Appendix Information of Schematic Diagram

16.1. Voltage & Waveform Chart

16.2. Illustration of ICs, Transistor and Diode

16.3. Terminal Function of ICs

17 Exploded View and Replacement Parts List

17.1. Exploded View and Mechanical replacement

Part List

17.2. Electrical Replacement Part List

1 Safety Precautions

1.1. General Guidelines

1. IMPORTANT SAFETY NOTICE

There are special components used in this equipment which are important for safety. These parts are marked by in the

Schematic Diagrams, Circuit Board Layout, Exploded Views and Replacement Parts List. It is essential that these critical parts

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

the original design without permission of manufacturer.

2. An Isolation Transformer should always be used during the servicing of AC Adaptor whose chassis is not isolated from the AC

power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal

injury from electrical shocks. It will also protect AC Adaptor from being damaged by accidental shorting that may occur during

servicing.

3. 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.

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

installed.

5. After servicing, make 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 0.15PF capacitors, between each exposed metallic part on the set and a

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

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

1.3. Before Repair and Adjustment

Disconnect AC power to discharge the AC Capacitors (C5700, C5701, C5702, C5703, C5704, C5705, C5706, C5707, C5708)

through a 10 Ω, 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 AC~127 V/60 Hz in Power ON, FM Tuner, (No Signal at volume minimal) should be ~

850mA.

1.4. Protection Circuitry

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

No sound is heard when the power is turned on.

Sound 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.

Panasonic de México S.A. de C.V.

Ingeniería de Audio

Modelo: SC-MAX500LM

Safety

K2CB2CB00022

K2AB2B000007

G4DYZ0000062

Nombre del componente

ETS19AB2E6AG

K5D802BNA005

F1BAF471A013

FUSIBLE PRIMARIO

CAPACITOR DE AC

ZNR

Numero de Parte

TRANSFORMADOR DE PODER

TRANSFORMADOR DE

RESPALDO

CABLE TOMACORRIENTE.

CONECTOR TOMACORRIENTE

GAB. MET. SIN DOBLAR

G0B932H00002

REAR PANEL

CAPACITOR DE AC

OPTOACOPLADOR

CD UNIT

BOBINA PRIMARIO

RD-DDL100-PX

ERZV05Z471CS

PCB SMPS

F0CAF224A105

B3PBA0000579

RJB3573A

Tarjeta sin componentes

F1BAF1020020

RGR0439A-A

RGR0439A-A1

INSTRUCTIVO RQTM0193

RKM0702Z-K

2 Warning

2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi-

tive (ES) Devices

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

trostatically Sensitive (ES) Devices.

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 μW/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.

Figure 2-1

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.

Figure 2-2

2.5. Grounding for electrostatic breakdown prevention

• As for parts that use optical pick-up (laser diode), the optical pick-up is destroyed by the static electricity of the working environ-

ment.

Repair in the working environment that is grounded.

2.5.1. Worktable grounding

• Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed and ground the sheet.

2.5.2. Human body grounding

• Use the anti-static wrist strap to discharge the static electricity form your body Figure 2-3.

Figure 2-3

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