Panasonic SC-EN38GCS Service Manual page 4

SC-EN38GCS
1.2. Before Repair and Adjustment
Disconnect AC power, discharge Power Supply Capacitors C501 through a 10Ω, 1W 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 230-240 V, 50 Hz in NO SIGNAL mode should be ~300 mA.
1.3. 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.
1.4. Safety Part Information
Safety Parts List:
There are special components used in this equipment which are important for safety.These parts are marked by
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.
Reference No.
A2
A2
JK600
T600
F1
L600
301
FP600
FP841
R260
PCB6
PCB7
Part No.
K2CQ2CA00007
K2CP2CA00001
K2AA2B000017
G4CYAYY0 0176
K5D202BLA013
ELF15N035AN
RAE0165T-V
K5G302AA0002
K5G251A00008
ERD2FCVG470T
REPX0652F
REPX0652F
Table 1
Part Name & Description
AC CORD
AC CORD
AC INLET
TRANSFORMER
FUSE
LINE FILTER
TRAVERSE UNIT (W/O CD SERVO
P.C.B)
FUSE PROTECTOR
FUSE PROTECTOR
47 1/4W
TRANSFORMER P.C.B
AC INLET P.C.B
4
in the
Remarks
[M]
[M]
[M]
[M]
[M]
[M]
[M] (RTL)
[M]
[M]
[M]
[M] (RTL)
[M] (RTL)