Safety Precautions; General Guidelines; Protection Circuitry; Safety Part Information (Rr-Us570, Rr-Us590) - Panasonic RR-US570PP Service Manual

1 Safety Precautions

1.1.

General Guidelines

1. 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.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3. After servicing, carry out the following leakage current checks to prevent the customer from being exposed to shock hazards.
1.2.

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.
1.3.

Safety Part Information (RR-US570, RR-US590)

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.
13 RKS0454A-K
13 RKS0454B-K
13 RKS0454H-K
ICP501 D4FB1R100015
ICP502 D4FB1R100015
A3 RQT9358-Y
A3 RQT9361-B
A3 RQT9362-E
A3 RQT9359-P
Table 1
Part Name & Description
REAR CABINET
REAR CABINET
REAR CABINET
RESETTABLE FUSE
RESETTABLE FUSE
O/I BOOK (En/Cf)
O/I BOOK (En)
O/I BOOK (Ge/It/Fr/Du/Sp/Cn/Ar/Sw/Da/
Cz/Po/Pr/Ru/Ur)
O/I BOOK (En)
3
Remarks
US570PP
US570E
US590P
US570PP
US570E
US570E
US590P