SC-NA10EB, SC-NA10EG, SC-NA10GN, SC-NA10P, SC-NA10PC - Panasonic Audio Service Manual (repair manual)

sc-na10eb, sc-na10eg, sc-na10gn, sc-na10p, sc-na10pc service manual
Model
SC-NA10EB SC-NA10EG SC-NA10GN SC-NA10P SC-NA10PC
Pages
64
Size
3.59 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / WIRELESS SPEAKER SYSTEM
File
sc-na10eb-sc-na10eg-sc-na10gn-sc-na10p-sc-na10pc.pdf
Date

Read Panasonic SC-NA10EB / SC-NA10EG / SC-NA10GN / SC-NA10P / SC-NA10PC Service Manual online

PSG1310001CE
A6
Wireless Speaker System
Model No.
SC-NA10EB
SC-NA10EG
SC-NA10GN
SC-NA10P
SC-NA10PC
Product Color:   (A)...Blue Type (For EB/EG only)
 (R)...Red Type (For EG only)
 (K)...Black Type (For P/PC/GN only)
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.2. Caution for AC Mains Lead (For EB only)----------- 4
1.3. Before Repair and Adjustment ------------------------- 4
1.4. Protection Circuitry ---------------------------------------- 4
1.5. Safety Part Information----------------------------------- 5
2 Warning -------------------------------------------------------------- 6
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostaticy Sensitive (ES) Devices---------- 6
2.2. Service caution based on Legal restrictions -------- 7
3 Service Navigation ----------------------------------------------- 8
3.1. Service Information --------------------------------------- 8
4 Specifications ------------------------------------------------------9
4.1. Others (Licenses) ------------------------------------------ 9
5 General/Introduction------------------------------------------- 10
5.1. About the power of this unit (For EB/EG/GN)----- 10
5.2. About the power of this unit (For P/PC) ------------ 11
5.3. About the DC OUT terminal (USB) ------------------ 12
5.4. Listening to audio from a Bluetooth® device------ 12
5.5. One-Touch Connection (Connecting by NFC) ---- 13
6 Location of Controls and Components------------------ 14
6.1. Main Unit Key Button Operations -------------------- 14
7 Service Mode ----------------------------------------------------- 15
7.1. Service Mode --------------------------------------------- 15
2
7.2. Doctor Mode----------------------------------------------- 16
7.3. Version Display Mapping ------------------------------- 17
8 Troubleshooting Guide---------------------------------------- 18
9 Disassembly and Assembly Instructions 
--------------- 19
9.1. Disassembly flow chart --------------------------------- 20
9.2. Types of Screws ------------------------------------------ 20
9.3. Main Parts Location Diagram ------------------------- 21
9.4. Disassembly of Rear Cabinet Assembly ----------- 22
9.5. Disassembly of Jack P.C.B. --------------------------- 23
9.6. Disassembly of Bluetooth P.C.B. --------------------- 24
9.7. Disassembly of NFC P.C.B. --------------------------- 25
9.8. Disassembly of Button P.C.B. ------------------------- 26
9.9. Disassembly of Volume P.C.B.------------------------ 27
9.10. Disassembly of Microphone Unit --------------------- 28
9.11. Disassembly of Main P.C.B. --------------------------- 29
9.12. Disassembly of Battery Pack-------------------------- 30
9.13. Disassembly of Passive Radiator Unit -------------- 31
9.14. Disassembly of Front Speaker Unit (L) & (R) ----- 31
10 Service Position ------------------------------------------------- 33
10.1. Checking of Main P.C.B. (Side B), NFC P.C.B.
(Side B), Bluetooth P.C.B. (Side B) ------------------ 33
10.2. Checking of Main P.C.B. (Side A), NFC P.C.B.
(Side A), Bluetooth P.C.B. (Side A) ------------------ 34
11 Block Diagram --------------------------------------------------- 35
11.1. SYSTEM CONTROL & AUDIO (1/2) BLOCK
DIAGRAM -------------------------------------------------- 35
11.2. SYSTEM CONTROL & AUDIO (2/2) BLOCK
DIAGRAM -------------------------------------------------- 36
11.3. POWER SUPPLY BLOCK DIAGRAM -------------- 37
12 Wiring Connection Diagram --------------------------------- 38
13 Schematic Diagram
--------------------------------------------- 39
13.1. Schematic Diagram Notes ----------------------------- 39
13.2. MAIN (AUDIO IN) CIRCUIT --------------------------- 41
13.3. MAIN (MICON) CIRCUIT------------------------------- 42
13.4. MAIN (DAMP) CIRCUIT -------------------------------- 43
13.5. MAIN (POWER) CIRCUIT ----------------------------- 44
13.6. MAIN (CHARGER) CIRCUIT-------------------------- 45
13.7. JACK, VOLUME & BUTTON CIRCUIT ------------- 46
14 Printed Circuit Board ------------------------------------------ 47
14.1. MAIN P.C.B. (Side A)------------------------------------ 47
14.2. MAIN P.C.B. (Side B)------------------------------------ 48
14.3. JACK & VOLUME P.C.B.------------------------------- 49
14.4. BUTTON P.C.B. ------------------------------------------ 50
15 Appendix Information of Schematic Diagram --------- 51
15.1. Voltage Measurement & Waveform Chart --------- 51
16 Exploded View and Replacement Parts List ----------- 55
16.1. Exploded View and Mechanical replacement
Parts List --------------------------------------------------- 55
16.2. Electrical Replacement Parts List -------------------- 61
3
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
Ω and 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 1.5k
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
1.2.
Caution for AC Mains Lead (For EB only)
1.3.
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 240V, at 50Hz during power on at volume minimum, (Selector : AUX mode) should be ~200 mA. (For
EB/EG/GN)
• Current consumption at AC 120V, at 60Hz during power on at volume minimum, (Selector : AUX mode) should be ~200 mA. (For
P/PC)
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.
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Here you can read online and download Panasonic SC-NA10EB / SC-NA10EG / SC-NA10GN / SC-NA10P / SC-NA10PC Service Manual in PDF. SC-NA10EB / SC-NA10EG / SC-NA10GN / SC-NA10P / SC-NA10PC service manual will guide through the process and help you recover, restore, fix, disassemble and repair Panasonic SC-NA10EB / SC-NA10EG / SC-NA10GN / SC-NA10P / SC-NA10PC Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.