Read Panasonic SA-NC6EB Service Manual online
1.3. Before repair and adjustment
Disconnect AC power, discharge Power Supply Capacitors C5951 through a 10
Ω, 5W resistor to ground.
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 230/240V, 50 Hz in NO SIGNAL mode (volume min at CD mode) should be ~ 350mA.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
Current consumption at AC 230/240V, 50 Hz in NO SIGNAL mode (volume min at CD mode) should be ~ 350mA.
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.
· 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 Parts Information
Safety Parts List:
There are special components used in this equipment which are important for safety.
These parts are marked by
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.
without permission of manufacturer.
Table 1
Reference No.
Part No.
Part Name & Description
Remarks
360
RAE2023Z-S
TRAVERSE UNIT
[M]
A2
K2CT3CA00004
AC CORD
[M]
C5251
F2A1V4710036
470 35V
[M]
C5252
F2A1V4710036
470 35V
[M]
C5351
F2A1V4710036
470 35V
[M]
C5352
F2A1V4710036
470 35V
[M]
C5512
F2A1V1020084
1000 35V
[M]
C5513
F2A1V1020084
1000 35V
[M]
C5951
ECQU2A104MLC
0.1 100V
[M]
F1
K5D162BLA013
1.6A FUSE 250V
[M]
JK5950
K2AA2B000011
JK AC INLET
[M]
L5950
ELF15N035AN
LINE FILTER
[M]
L5951
ELF15N035AN
LINE FILTER
[M]
RL5950
K6B1AEA00003
MAGNETRELAYS
[M]
T5950
G4CYAYY00141
THERMISTOR
[M]
T5951
G4C2AAJ00005
BACK-UP TRANSFORMER
[M]
Z5950
ERZV10V511CS
ZENER
[M]
8
SA-NC6EB
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