Panasonic SA-PT875GA, Руководство по обслуживанию

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