Panasonic SA-AK785LM-K, Руководство по обслуживанию

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1.4. Before Repair and Adjustment
Disconnect AC power to discharge unit AC Capacitors as such (C5700, C5701, C5703, C5704, C5705, C5706, C5707) through a
10
?
, 10 W 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 at AC 110V~127V / 220V~240V, 50/60 Hz in NO SIGNAL mode volume minimal should be ~ 500 mA (For PH
only).
Current consumption at AC 120V, 60 Hz in NO SIGNAL mode volume minimal should be ~ 500 mA (For PN only).
1.5. 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.
1.6. 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 & 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.
Modelo: SC-AK785LM-K
Safety
INSTRUCTIVO RQTM0171
RKMX0144Z-KL
RD-DAC060-PX
CAPACITOR DE AC F1BAF1020020
K2AA2B000017
ETS48AB12GAC
CAPACITOR DE AC
CAPACITOR DE AC
F0CAF334A087
PCB SMPS
F0CAF224A085
B3PBA0000402
RJBX0562T-1
GAB. MET. SIN DOBLAR
K5G4013A0001
REAR PANEL
Numero de Parte
TRANSFORMADOR DE PODER
TRANSFORMADOR DE
RESPALDO
OPTOACOPLADOR
LECTOR ÓPTICO
(CD UNIT)
RESISTENCIA FUSIBLE
FUSIBLE PRIMARIO
BOBINA PRIMARIO ELF22V035B
SMPS FX785 N0AE6GY00001
Nombre del componente
SJA168-1A
ETS19AB256AG
K5D802APA008
CABLE TOMACORRIENTE.
CONECTOR TOMACORRIENTE
RGRX0070R-AL