Protection Circuitry; Safety Parts Information - Panasonic SA-PT960P Service Manual

SA-PT960P / SA-PT960PC
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.
12
13
23
23
66
84
PCB3
PCB4
DZ5701
L5702
T2900
T5701
T5751
PC5701
PC5702
PC5720
PC5799
F1
FP2901
TH5701
TH5860
P5701
A2
C5700
C5701
C5703
in the Schematic Diagrams & Replacement Parts List. It is essential that these critical parts
Part No.
REXX0640-J BLACK WIRE (AC TO SMPS)
REXX0641-J RED WIRE (AC TO SMPS)
RGRX0067J-C2 REAR PANEL
RGRX0067J-D2 REAR PANEL
RKMX0141-K TOP CABINET
J0KD00000126 FERRITE CORE
REPX0622A SMPS P.C.B
REPX0622A AC INLET P.C.B
ERZV10V511CS ZENER
G0B932H00001 LINE FILTER
G4D1A0000117 SWITCHING TRANSFORMER
ETS42BM18GAD SWITCHING TRANSFORMER
ETS19AB256AG SWITCHING TRANSFORMER
B3PBA0000402 PHOTO COUPLER
B3PBA0000402 PHOTO COUPLER
B3PBA0000402 PHOTO COUPLER
B3PBA0000402 PHOTO COUPLER
K5D802APA008 FUSE
K5G401A00008 FUSE PROTECTOR
D4CAA5R10001 THERMISTOR
D4CC11040013 THERMISTOR
K2AB2B000010 AC INLET
K2CB2CB00021 AC CORD
F1BAF1020020 1000pF
F0CAF334A087 0.33uF
F0CAF224A085 0.22uF
Table 1
Part Name & Description
6
Remarks
[M]
[M]
[M] P
[M] PC
[M]
[M]
[M] (RTL)
[M] (RTL)
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]
[M]