Before Repair And Adjustment; Protection Circuitry; Caution For Fuse Replacement; Safety Part Information - Panasonic SA-PMX100EG Service Manual

1.2.

Before Repair and Adjustment

Disconnect AC power & discharge AC Capacitors (C5700, C5701, C5702, C5705 and C5706) through a 10W, 1W resistor to
ground.
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 during AC 220V ~ 240V, at 50Hz in NO SIGNAL mode (at volume minimum in FM mode) should be ~200
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.

Caution For Fuse Replacement

1.5.

Safety Part Information

Safety Parts List:
There are special components used in this equipment which are important for safety.
These parts are marked by
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
in the Schematic Diagrams, Exploded View & Replacement Parts List. It is essential that these
Ref. No. Part No.
12 RGR0474D-A1
16 RKM0766A-S
23 RMQ2463
301 RAE1047Z-V
A2 K2CQ2YY00119
A3 RQT9992-1D
A3 RQT9993-1E
A3 RQT9994-1R
A3 RQT9995-1B
PCB6 REP5161AA
DZ5701 D4EAY5110006
L5704 G0B203G00005
L5713 G0B922G00002
T5701 G4DYZ0000080
PC5721 B3PBA0000579
PC5761 B3PBA0000579
F1 K5G312Y00007
P5701 K2AA2B000011
R5700 D0GF474JA048
R5701 D0GF474JA048
R5710 D0GF474JA048
C5700 F1BAF1020020
C5701 F0CAF224A105
C5702 F0CAF224A105
C5705 F1BAF1020020
C5706 F1BAF1020020
Part Name & Description
REAR CABINET
TOP CABINET
SMPS PC SHEET
TRAVERSE ASS'Y
AC CORD
O/I BOOK (Ge/It/Fr/Du/Da/Sw/Fi)
O/I BOOK
O/I BOOK (Po/Cz/Sp)
O/I BOOK (En)
SMPS P.C.B
SURGE ABSORBER
LINE FILTER
LINE FILTER
SWITCHING TRANSFORMER
PHOTO COUPLER
PHOTO COUPLER
FUSE
AC INLET
470K 1/4W
470K 1/4W
470K 1/4W
1000pF
0.22uF
0.22uF
1000pF
1000pF
4
Remarks
(E.S.D)
(RTL)