Panasonic RX-D55EE Bedienungsanleitung

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law.

PSG1005030AE

Portable Stereo CD System

Model No. RX-D55EE

Product Color: (K)...Black Type

TABLE OF CONTENTS

PAGE PAGE

1 Safety Precautions----------------------------------------------- 3

1.1. General Guidelines---------------------------------------- 3

1.2. Before Repair and Adjustment ------------------------- 4

1.3. Caution For Fuse Replacement------------------------ 4

1.4. Protection Circuitry ---------------------------------------- 4

1.5. Safety Part Information----------------------------------- 4

2 Warning -------------------------------------------------------------- 5

2.1. Prevention of Electro Static Discharge (ESD)

to Electrostatically Sensitive (ES) Devices---------- 5

2.2. Precaution of Laser Diode------------------------------- 6

2.3. Service caution based on Legal restrictions -------- 7

2.4. Handling Precaution for Traverse Unit----------------8

3 Service Navigation --------------------------------------------- 10

3.1. Service Information -------------------------------------- 10

3.2. Notes -------------------------------------------------------- 10

3.3. Different Points ------------------------------------------- 11

4 Specifications ---------------------------------------------------- 12

5 Illustration of IC’s, Transistors and Diodes ------------ 13

6 Schematic Diagram -------------------------------------------- 15

6.1. MAIN CIRCUIT (1/6) ------------------------------------ 15

6.2. MAIN CIRCUIT (2/6) ------------------------------------ 16

6.3. MAIN CIRCUIT (3/6) ------------------------------------ 17

Notes: This model is based on RX-D55EG-K. Please refer to the original service manual

(Order no. PSG1004005CE).

6.4. MAIN CIRCUIT (4/6) ------------------------------------ 18

6.5. MAIN CIRCUIT (5/6) ------------------------------------ 19

6.6. MAIN CIRCUIT (6/6) ------------------------------------ 20

6.7. POWER CIRCUIT---------------------------------------- 21

7 Printed Circuit Board ------------------------------------------ 22

7.1. MAIN P.C.B. ----------------------------------------------- 22

7.2. DECK P.C.B. ---------------------------------------------- 23

7.3. POWER, BATTERY (1), BATTERY (2) &

MUSIC PORT P.C.B. ------------------------------------ 24

8 Exploded View and Replacement Parts List ----------- 25

8.1. Exploded View and Mechanical replacement

Parts List --------------------------------------------------- 25

8.2. Electrical Replacement Parts List -------------------- 31

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 1MΩand 5.2MΩ. When the exposed metal does not have a return path to the chas-

sis, 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 1.5kΩ, 10 watts resistor, in parallel with a 0.15μF 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

1.2. Before Repair and Adjustment

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 230V, 50Hz in TUNER mode at volume (min) should be (~300 mA).

1.3. Caution For Fuse Replacement

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. Safety Part 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.

Table 1

Safety Ref. No. Part No. Part Name & Description Remarks

14 RKHN0005B-H HANDLE

401 RD-DAPX001-V TRAVERSE UNIT

A2 K2CQ2CA00007 AC CORD

A3 RQTX1037-R O/I BOOK (Ru/Ur)

PCB3 REPNT0063H POWER P.C.B. (RTL)

L5901 ELF15N035AN LINE FILTER

T5903 G4C5ACH00007 TRANSFORMER

Z5902 ERZVA5Z471 ZNR SURGE

F5901 K5D402BLA013 FUSE

F5902 K5D162BLA013 FUSE

FP4100 K5G502A00039 FUSE PROTECTOR

FP5903 K5G502A00039 FUSE PROTECTOR

JK5901 K2AA2B000014 AC INLET

ZA5901 K3GE1ZZ00001 FUSE HOLDER

ZA5902 K3GE1ZZ00001 FUSE HOLDER

ZA5903 K3GE1ZZ00001 FUSE HOLDER

ZA5904 K3GE1ZZ00001 FUSE HOLDER

R4149 D0AF1R5JA113 1.5 1/8W

R4153 D0AF1R5JA113 1.5 1/8W

R4154 D0AF1R5JA113 1.5 1/8W

2 Warning

2.1. Prevention of Electro Static 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. 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-equiped 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 equiped with ES devices, place the assembly on a conductive surface such as alumin-

ium foil, to prevent electrostatic charge build up 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 remover 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, aluminium 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: 795 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.

CAUTION!

THIS PRODUCT UTILIZES A LASER.

USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT

IN HAZARDOUS RADIATION EXPOSURE.

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 (86°F) 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±86°F).

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 Precaution 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.

2.4.2. Grounding for electrostatic breakdown prevention

Some devices such as the CD player use the optical pickup (laser diode) and the optical pickup will be damaged by static electricity

in the working environment. Proceed servicing works under the working environment where grounding works is completed.

2.4.2.1. Worktable grounding

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

2.4.2.2. Human body grounding

1. Use the anti-static wrist strap to discharge the static electricity form your body (Figure 2).

Figure 2

3 Service Navigation

3.1. Service Information

This service manual contains technical information which will allow service personnel’s to understand and service this model.

Please place orders using the parts list and not the drawing reference numbers.

If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service

manual.

•CD Mechanism Unit (DLS6F):

1) This model uses CD Mechanism Unit (DLS6F).

•Micro-processor:

1) The following components are supplied as an assembled part.

• Micro-processor IC, (IC2100) is supplied as assembled part (RFKWMD55EG).

3.2. Notes

This service manual contains technical information which will allow service personnel’s to understand and service this model.

Please place orders using the parts list and not the drawing reference numbers.

If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service

manual.

1) This service manual does not contains the following information

This simplified service manual is base on RX-D55EG-K. Please refer to the original service manual, RX-D55EG-K (Order No.

PSG1004005CE) for the below mention contents.

- Location of Controls and Components

- Self Diagnostic and Doctor Mode Setting

- Service Fixture & Tools

- Disassembly and Assembly Instructions

- Disassembly and Assembly of Traverse Unit

- Service Position

- Measurements and Adjustments

- Voltage Measurement & Waveform Chart

- Wiring Connection Diagram

- Schematic Diagram Notes

- Terminal Function of IC’s

2) This service manual contains include the following information

- Safety Precautions

- Warning

- Service Navigation

- Specifications

- Illustration of IC’s, Transistors and Diodes

- Schematic Diagram (MAIN & POWER CIRCUIT)

- Printed Circuit Board (MAIN, DECK, POWER, BATTERY (1), BATTERY (2) & MUSIC PORT P.C.B.)

- Exploded View and Replacement Parts List

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