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
Содержание SA-VKX80EE
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