Read Panasonic SC-HTX5EB / SC-HTX5EG / SU-HTX5EB / SU-HTX5EG Service Manual online
5
1.3.
Before Repair and Adjustment
Disconnect AC power, discharge unit AC Capacitors as such C5700, C5701, C5702, C5703, C5704, C5705 through a 10
Ω, 1W
resistor to ground.
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.
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 240 V, at 50 Hz in DVD mode (at volume min) should be 200~800 mA.
1.4.
Caution For Fuse Replacement
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.
• 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:
"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.
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.
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
1.6.
Safety Part 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.
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.
Safety
Ref. No.
Part No.
Part Name & Description
Remarks
7
REE1510
BLACK WIRE (SMPS-AC)
8
REE1511
RED WIRE (SMPS-AC)
10
RKMX0141B-S2
TOP CABINET
11
RGR0383G-A
REAR PANEL
A1
K2CQ2CA00007
AC CORD
EG
A1
K2CZ3YY00005
AC CORD
EB
A3
RQT9476-D
O/I BOOK (Ge/It/Fr/Du)
EG
A3
RQT9477-R
O/I BOOK (Sp/Ru/Ur)
EG
A3
RQT9478-B
O/I BOOK (En)
EB
A9
RFA3027B
GLASS SHELF BOARD ASS’Y
PCB9
REPX0728S
AC INLET PCB
(RTL)
PCB11
REPX0728S
SMPS PCB
(RTL)
DZ5701
ERZV10V511CS
ZNR
L5701
ELF15N035AN
LINE FILTER
L5702
ELF21N015A
LINE FILTER
L5703
ELF21N015A
LINE FILTER
T4701
G4D1A0000117
SWITCHING TRANSFORMER
T5701
ETS42BM1C6AC
MAIN TRANSFORMER
T5751
ETS19AB221AG
BACKUP TRANSFORMER
PC5720
B3PBA0000402
PHOTO COUPLER
PC5799
B3PBA0000402
PHOTO COUPLER
RY5701
K6B1AEA00003
RELAY
F1
K5D402BK0007
FUSE
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