DOWNLOAD Panasonic SC-NA30GN / SC-NA30P / SC-NA30PC Service Manual ↓ Size: 6.87 MB | Pages: 71 in PDF or view online for FREE

PSG1310005CE

A6

Product Color:   (K)...Black Type (For NA30P/PC)

 (S)...Silver Type (For NA30GN/P)

PAGE

PAGE

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 Electrostatic Discharge (ESD)

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

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

3 Service Navigation ----------------------------------------------- 7

3.1. Service Information --------------------------------------- 7

4 Specifications ----------------------------------------------------- 8

4.1. Others (Licenses)------------------------------------------ 8

5 General/Introduction -------------------------------------------- 9

5.1. About the power of this unit ----------------------------- 9
5.2. About the DC OUT terminal (USB)-------------------- 9
5.3. One-Touch Connection (Connecting by NFC) ----10

6 Location of Controls and Components ------------------ 11

6.1. Main Unit Key Button Operations -------------------- 11

7 Service Mode ----------------------------------------------------- 12

7.1. Service Mode --------------------------------------------- 12
7.2. Doctor Mode----------------------------------------------- 13
7.3. Version Display Mapping------------------------------- 14

8 Troubleshooting Guide --------------------------------------- 15
9 Disassembly and Assembly Instructions--------------- 16

9.1. Disassembly flow chart --------------------------------- 17
9.2. Types of Screws------------------------------------------ 17
9.3. Main Parts Location Diagram ------------------------- 18
9.4. Disassembly of Rear Cabinet Block----------------- 19
9.5. Disassembly of Passive Radiator Unit (SP4) &

(SP5) -------------------------------------------------------- 20

9.6. Disassembly of Jack P.C.B. --------------------------- 21
9.7. Disassembly of NFC P.C.B. --------------------------- 22
9.8. Disassembly of Bluetooth Module ------------------- 23
9.9. Disassembly of Battery Pack-------------------------- 24

9.10. Disassembly of Main P.C.B. --------------------------- 25

2

9.11. Disassembly of Woofer Speaker (SP3)------------- 27

9.12. Disassembly of Tweeter Speaker (SP1) &

(SP2) -------------------------------------------------------- 28

9.13. Disassembly of Mic Unit -------------------------------- 29
9.14. Disassembly of Top Ornament Block --------------- 29
9.15. Replacement of Top Ornament ----------------------- 30
9.16. Disassembly of Volume P.C.B.------------------------ 31
9.17. Replacement of Gear Box Assembly --------------- 33
9.18. Disassembly of Guide Plate Block ------------------- 37

10 Service Position ------------------------------------------------- 38

10.1. Checking of Main P.C.B. (Side B) -------------------- 38
10.2. Checking of Main P.C.B. (Side A) -------------------- 39

11 Block Diagram --------------------------------------------------- 41

11.1. SYSTEM CONTROL & AUDIO (1/2) BLOCK

DIAGRAM -------------------------------------------------- 41

11.2. SYSTEM CONTROL & AUDIO (2/2) BLOCK

DIAGRAM -------------------------------------------------- 42

11.3. POWER SUPPLY BLOCK DIAGRAM -------------- 43

12 Wiring Connection Diagram --------------------------------- 44
13 Schematic Diagram--------------------------------------------- 45

13.1. Schematic Diagram Notes ----------------------------- 45
13.2. MAIN (AUDIO IN) CIRCUIT --------------------------- 47
13.3. MAIN (MICON) CIRCUIT------------------------------- 48
13.4. MAIN (DAMP) CIRCUIT -------------------------------- 49
13.5. MAIN (POWER) CIRCUIT ----------------------------- 50
13.6. MAIN (CHARGER) CIRCUIT-------------------------- 51
13.7. JACK, VOLUME & MOTOR CIRCUIT -------------- 52

14 Printed Circuit Board ------------------------------------------ 53

14.1. MAIN P.C.B. (Side A)------------------------------------ 53
14.2. MAIN P.C.B. (Side B)------------------------------------ 54
14.3. JACK, VOLUME & MOTOR P.C.B. ------------------ 55

15 Appendix Information of Schematic Diagram --------- 57

15.1. Voltage Measurement & Waveform Chart --------- 57

16 Exploded View and Replacement Parts List ----------- 61

16.1. Exploded View and Mechanical replacement

Parts List --------------------------------------------------- 61

16.2. Electrical Replacement Parts List -------------------- 67

3

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. 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

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

sis, 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 1-1.

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

4

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 240V, at 50Hz during power on at volume minimum, (Selector : AUX mode) should be ~200 mA. (For

GN)

• Current consumption at AC 120V, at 60Hz during power on at volume minimum, (Selector : AUX mode) should be ~200 mA. (For

P/PC)

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, 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.

Safety

Ref. No.

Part No.

Part Name & Description

Remarks

2

N4HULQZ00001

BATTERY PACK

10

RFKGCNA30EBS

FRONT CABINET ASS’Y

GN-S

10

RFKGCNA30P-S

FRONT CABINET ASS’Y

P-S

10

RFKGCNA30PCK

FRONT CABINET ASS’Y

P/PC-K

A1

K2CJ2YY00093

AC CORD

GN-S

A2

RFEA228C-AG

AC ADAPTOR

P-K, P-S, PC-K

A2

RFEA229E-AH

AC ADAPTOR

GN-S

A3

VQT5C36

O/I BOOK (En)

P-K, P-S, PC-K

A3

VQT5C37

O/I BOOK (Cf)

PC-K

A3

VQT5C51

O/I BOOK (En)

GN-S

IP1891

D4FB1R100015

RESETTABLE FUSE

IP1901

D1JBR015A007

PROTECTOR