4
1.4. Before Repair and Adjustment
Disconnect AC power to discharge unit AC Capacitors as such (C5700, C5701, C5703, C5704, C5705, C5706, C5707, C5708)
through a 10 Ω, 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 220~240 V, 50/60 Hz in Power ON, FM Tuner, No Signal mode should be ~ 500 mA
Current consumption at AC 110~127 V, 50/60 Hz in Power ON, FM Tuner, No Signal mode should be ~ 750 mA (PH)
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 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
6 REXX1030 1P BLACK WIRE (VOLTAGE-SMPS) PH
7 REXX1031 1P RED WIRE (VOLTAGE-SMPS) PH
17 RGRX1003E-B1 REAR PANEL EE
17 RGRX1003E-C1 REAR PANEL GN
17 RGRX1003F-C1 REAR PANEL PH
39 RKMX1007-K SIDE PANEL L
40 RKMX1008-K SIDE PANEL R
58 RMQX1087 DECK COVER SHEET
401 RAEX1032Z-V TRAVERSE UNIT
A2 K2CJ2DA00008 AC CORD GN
A2 K2CQ2CA00007 AC CORD EE/PH
A3 RQTX1222-R O/I BOOK (Ru/Ur) EE
A3 RQTX1223-M O/I BOOK (Sp) PH
A3 RQTX1224-B O/I BOOK (En) GN
PCB11 REPX0809N SMPS P.C.B. (RTL)PH
PCB11 REPX0809P SMPS P.C.B. (RTL)EE/GN
PCB12 REPX0809N VOLTAGE SELECTOR P.C.B. (RTL)PH
DZ5701 ERZV10V511CS ZNR
S5701 K0ABCA000007 SW VOLT ADJ PH
L5702 ELF22V020A LINE FILTER EE/GN
L5703 G0B103H00012 LINE FILTER EE/GN
L5703 G0B932H00002 LINE FILTER PH
T4300 G4DYA0000214 TRANSFORMER
T5701 G4DYZ0000049 MAIN TRANSFORMER
T5751 ETS19AB2E6AG SUB TRANSFORMER
PC5701 B3PBA0000402 PHOTO COUPLER
PC5702 B3PBA0000402 PHOTO COUPLER
PC5720 B3PBA0000402 PHOTO COUPLER
PC5799 B3PBA0000402 PHOTO COUPLER
F1 K5D502BNA005 FUSE EE/GN
F1 K5D802BNA005 FUSE PH
TH5702 D4CAA2R20001 THERMISTOR
TH5860 D4CC11040013 THERMISTOR
TH5861 D4CC11040013 THERMISTOR
P5701 K2AA2B000011 AC INLET
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