Before Repair And Adjustment; Protection Circuitry; Safety Parts Information - Panasonic SA-VKX80EE Service Manual

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 (
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 Exploded View & Replacement Parts List. It is essential that these critical parts should be
Safety Ref No. Part No.
6 REXX1030
7 REXX1031
17 RGRX1003E-B1
17 RGRX1003E-C1
17 RGRX1003F-C1
39 RKMX1007-K
40 RKMX1008-K
58 RMQX1087
401 RAEX1032Z-V
A2 K2CJ2DA00008
A2 K2CQ2CA00007
A3 RQTX1222-R
A3 RQTX1223-M
A3 RQTX1224-B
PCB11 REPX0809N
PCB11 REPX0809P
PCB12 REPX0809N
DZ5701 ERZV10V511CS
S5701 K0ABCA000007
L5702 ELF22V020A
L5703 G0B103H00012
L5703 G0B932H00002
T4300 G4DYA0000214
T5701 G4DYZ0000049
T5751 ETS19AB2E6AG
PC5701 B3PBA0000402
PC5702 B3PBA0000402
PC5720 B3PBA0000402
PC5799 B3PBA0000402
F1 K5D502BNA005
F1 K5D802BNA005
TH5702 D4CAA2R20001
TH5860 D4CC11040013
TH5861 D4CC11040013
P5701 K2AA2B000011
Part Name & Description
1P BLACK WIRE (VOLTAGE-SMPS)
1P RED WIRE (VOLTAGE-SMPS)
REAR PANEL
REAR PANEL
REAR PANEL
SIDE PANEL L
SIDE PANEL R
DECK COVER SHEET
TRAVERSE UNIT
AC CORD
AC CORD
O/I BOOK (Ru/Ur)
O/I BOOK (Sp)
O/I BOOK (En)
SMPS P.C.B.
SMPS P.C.B.
VOLTAGE SELECTOR P.C.B.
ZNR
SW VOLT ADJ
LINE FILTER
LINE FILTER
LINE FILTER
TRANSFORMER
MAIN TRANSFORMER
SUB TRANSFORMER
PHOTO COUPLER
PHOTO COUPLER
PHOTO COUPLER
PHOTO COUPLER
FUSE
FUSE
THERMISTOR
THERMISTOR
THERMISTOR
AC INLET
4
Remarks
PH
PH
EE
GN
PH
GN
EE/PH
EE
PH
GN
(RTL)PH
(RTL)EE/GN
(RTL)PH
PH
EE/GN
EE/GN
PH
EE/GN
PH