Protection Circuitry; Safety Parts Information - Panasonic SA-PT70EB Service Manual

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 Parts 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.
9 RGRX0073A-A1
20 RKMX0151-K
20 RKMX0151-S
401 RAEX0017Z-V
A2 K2CQ2CA00007
A2 K2CZ3YY00005
A3 RQTX1013-D
A3 RQTX1014-H
A3 RQTX1019-B
A3 RQTX1024-Z
PCB4 REPX0767A
DZ5701 ERZV10V511CS
L5701 ELF17N007A
L5702 ELF18N006A
T2900 G4D1A0000118
T5701 ETS35BC2T6AD
T5751 ETS19AB2A6AG
PC5702 B3PBA0000454
PC5720 B3PBA0000454
PC5799 B3PBA0000454
RY5701 K6B1AEA00003
F1 K5D202BNA005
FP2901 K5H1022A0011
IP100 K5H302100004
TH5702 D4CAA5R10001
P5701 K2AA2B000011
C5700 F1BAF2220023
C5701 ECQU2A104MLC
C5702 ECQU2A104MLC
C5703 ECQU2A104MLC
C5704 F1BAF1020020
C5706 F1BAF1020020
C5708 F1BAF1020020
Part Name & Description
REAR PANEL
TOP CABINET
TOP CABINET
TRAVERSE UNIT
AC CORD
AC CORD
O/I BOOK (Ge/Fr/It)
O/I BOOK (Du/Sw/Da/Sp)
O/I BOOK (En)
O/I BOOK (En/Cz/Po/Hu)
SMPS P.C.B.
ZNR
LINE FILTER
LINE FILTER
TRANSFORMER
SWITCHING TRANSFORMER
SWITCHING TRANSFORMER
PHOTO COUPLER
PHOTO COUPLER
PHOTO COUPLER
RELAY
FUSE
PROTECTOR
PROTECTOR
THERMISTOR
AC INLET
2200pF
0.1uF
0.1uF
0.1uF
1000pF
1000pF
1000pF
4
Remarks
EB/EG/EP-K
EG/EP-S
EG/EP-K/S
EB-K
EG-K/S
EG-K/S
EB-K
EP-K/S
(RTL)