Table of Contents
Advertisement
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.
Caution for fuse replacement
1.5.
Safety Part Information
Safety Parts List:
There are special components used in this equipment which are important for safety.
These parts are marked by
be replaced with manufacturer's specified parts to prevent shock, fire or other hazards. Do not modify the original design without
permission of manufacturer.
Table 1
Reference No.
L5601
L5602
L5603
L5604
L5950
T5950
T5951
Z5950
RL5950
FP5920
FP5940
FP5950
JK5950
R5950
C5701
2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
in the Schematic Diagrams & Replacement Parts List. It is essential that these critical parts should
Part No.
G0B9R5K00001
G0B9R5K00001
G0B9R5K00001
G0B9R5K00001
ELF15N035AN
G4CYAYY00147
G4C2AAJ00005
ERZV10V511CS
K6B1AEA00015
F1
K5D402APA008
K5G103A00019
K5G103A00019
K5G402A00025
K2AB2B000007
A2
K2CB2CB00018
ERC12UGK335D
ECQU2A334MLA
Part name & Description
CHOKE COIL
CHOKE COIL
CHOKE COIL
CHOKE COIL
LINE FILTER
MAIN TRANSFORMER
SUB TRANSFORMER
ZENER
POWER RELAY
FUSE
FUSE PROTECTOR
FUSE PROTECTOR
FUSE PROTECTOR
JK AC INLET
AC CORD
3.3M 1/2W
100P 6.3V
5
SA-AK750PL
Remarks
Advertisement
Table of Contents
