RC-DC1EB, RC-DC1EG - Panasonic Audio Service Manual (repair manual)

PSG1008012CE

Product Color: (K)...Black Type

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

1.1. General Guidelines---------------------------------------- 3
1.2. Before Repair and Adjustment ------------------------- 4
1.3. Protection Circuitry ---------------------------------------- 4
1.4. Safety Part Information----------------------------------- 4

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

2.1. Prevention of Electro Static Discharge (ESD)

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

2.2. Service caution based on Legal restrictions -------- 6

3 Specifications ----------------------------------------------------- 7
4 Location of Controls and Components ------------------- 8

4.1. Main Unit Key Button Operations---------------------- 8
4.2. Using an iPod or iPhone --------------------------------- 9

4.3. Memory Loader Information -----------------------------9

5 Disassembly and Assembly Instructions--------------- 10

5.1. Disassembly flow chart --------------------------------- 11
5.2. Main Parts Location Diagram ------------------------- 11
5.3. Disassembly of Top Housing Unit  ------------------- 12
5.4. Disassembly of Main P.C.B.  -------------------------- 15
5.5. Disassembly of LCD P.C.B. --------------------------- 16
5.6. Disassembly of Speaker Box Assembly ----------- 16
5.7. Disassembly of Speaker Unit  ------------------------ 17
5.8. Disassembly of Support Slide ------------------------ 18
5.9. Disassembly of Snooze Button  ---------------------- 19

6 Exploded View and Replacement Parts List ----------- 21

2

6.1. Exploded View and Mechanical replacement

Parts List --------------------------------------------------- 21

3

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, ensure that all the protective devices such as insulation barriers, insulation papers shields are properly

installed.

3. After servicing, check for leakage current checks to prevent from being exposed to shock hazards.

1. Unplug the AC cord and connect a jumper between the two prongs on the plug.
2. Using an ohmmeter measure the resistance value, 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

Ω and 5.2Ω. When the exposed metal does not have a return path to the chassis,

the reading must be 

1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5k

Ω, 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. should the measurement is outside of
the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is
returned to the customer.

4

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 100 V - 240 V, at 50/60 Hz in NO SIGNAL mode, at volume minimum, should be 40 mA.

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.

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

Safety

Ref. No.

Part No.

Part Name & Description

Remarks

A1

RFEAX1006

AC ADAPTOR

EG

A1

RFEAX1008

AC ADAPTOR

EB

A2

RQTX1209-1E

O.I BOOK (En/Sp/Po/Cz/Ru/Ur)

EG

A2

RQTX1208-1D

O.I BOOK (Ge/Fr/It/Du/Sw/Da)

EG

A2

RQTX1210-1B

O.I BOOK (En)

EB