Protection Circuitry; Safety Parts Information - Panasonic SA-PT875GA Service Manual

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.
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
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.
in the Schematic Diagrams, Exploded View & Replacement Parts List. It is essential that these
Safety Ref. No. Part No.
23 RGRX0071H-A2
23 RGRX0071H-B
37 RKMX0141-1K3
65 REXX0728
66 REXX0730
74 REXX0729
75 REXX0643
301 RD-DDTX001-V
A2 K2CQ2CA00007
A2 K2CZ3YY00005
A3 RQTX0234-B
A3 RQTX0235-G
A3 RQTX0236-K
A7 J0KG00000037
PCB7 REPX0728H
PCB8 REPX0728H
PCB11 REPX0728H
DZ5701 ERZV10V511CS
S5701 K0ABCA000007
L5701 ELF15N035AN
L5702 ELF22V022A
L5703 ELF22V035B
T2900 G4D1A0000117
T5701 ETS42BN1A6AD
T5751 ETS19AB2A6AG
PC5702 B3PBA0000402
PC5720 B3PBA0000402
PC5799 B3PBA0000402
RY5701 K6B1AEA00003
F1 K5D802BNA005
F2 K5G162B00016
FP2901 K5H1022A0011
TH5702 D4CAA5R10001
P5701 K2AA2B000017
C5700 F1BAF1020020
C5701 F0CAF334A087
C5702 ECQU2A104MLC
C5703 ECQU2A104MLC
C5704 F1BAF1020020
C5705 F1BAF1020020
Part Name & Description
REAR PANEL
REAR PANEL
TOP CABINET
BLACK WIRE (SMPS-AC)
RED WIRE (SMPS-AC)
WHITE WIRE (VOLT SELECT-SMPS)
BLUE WIRE (VOLT SELECT-SMPS)
TRAVERSE UNIT
AC CORD
AC CORD
O/I BOOK (En)
O/I BOOK
O/I BOOK
AC CLAMP FILTER
SMPS P.C.B
AC INLET P.C.B
VOLTAGE SELECTOR P.C.B
ZENER
SW VOLTAGE SELECTOR
LINE FILTER
LINE FILTER
LINE FILTER
SWITCHING TRANSFORMER
TRANSFORMER
SWITCHING TRANSFORMER
PHOTO COUPLER
PHOTO COUPLER
PHOTO COUPLER
POWER RELAY
FUSE
FUSE
FUSE PROTECTOR
THERMISTOR
AC INLET
1000pF
0.33uF
0.1uF
0.1uF
1000pF
1000pF
6
Remarks
GC/GS
GA
(RTL)
GS
GC/GS
GA
(RTL)
(RTL)
(RTL)