Protection Circuitry; Safety Parts Information - Panasonic SA-BT100P Service Manual

1.2.1. Caution for fuse replacement
1.3.

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.
1.4.

Safety Parts Information

Safety Parts List:
There are special components used in this equipment which are important for safety.
These parts are marked by
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.
Ref. No.
1
5
6
28
33
33
38
A2
PCB2
PCB3
PCB11
PCB12
IC103
IC3002
IC3102
IC51001
IC51302
IC51303
DZ5701
L5701
L5702
L5703
T5701
T5751
T7001
PC5701
in the Schematic Diagrams & Replacement Parts List. It is essential that these critical parts
Table 1
Part No.
J0KD00000126 FERRITE CORE
REXX0640-J BLACK WIRE (AC-SMPS)
REXX0641-J RED WIRE (AC-SMPS)
VXY2001-SER BD DRIVE UNIT
RGR0382A-A2 REAR PANEL
RGR0382A-B2 REAR PANEL
RKM0592-K TOP CABINET
K2CB2CB00021 AC CORD
RFKB4368A DIGITAL PCB
RFKB4370A MAIN PCB
REPX0622V SMPS PCB
REPX0622V AC INLET P.C.B
RFKWEDF001PA IC EEPROM
RFKWBT100DS1 IC FLASH ROM
RFKWBT100DS2 IC FLASH ROM
MN2WS0043AP IC DV LSI
C3FBSC000029 IC NAND FLASH ROM
C3ZBL0000027 IC EEPROM
ERZV10V511CS ZENER
ELF15N035AN LINE FILTER
ELF22V035B LINE FILTER
ELF22V035B LINE FILTER
ETS42BM19GAC MAIN TRANSFORMER
ETS19AB281AG BACKUP TRANSFORMER
G4D1A0000117 SWITCHING TRANSFORMER
B3PBA0000402 PHOTO COUPLER
Part Name & Description
7
SA-BT100P / SA-BT100PC
Remarks
[M]
[M]
[M]
[M]
[M] P
[M] PC
[M]
[M]
[M] (RTL)
[M] (RTL)
[M] (RTL)
[M] (RTL)
[M] (RTL)
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]