4
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 in the Schematic Diagrams, Exploded View & 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
12
RGR0474M-A
REAR CABINET
150PCS
12
RGR0474M-B
REAR CABINET
150EGS
12
RGR0474N-A
REAR CABINET
152EGS
48
RFKKMX100EGS
TOP AL ORNAMENT ASS'Y
301
TXQ0011
TRAVERSE ASS’Y
(E.S.D)
A2
K2CB2YY00065
AC CORD
150PCS
A2
K2CQ2YY00107
AC CORD
150EGS, 152EGS
A3
TQBJ0992
O/I BOOK (En)
150EGS
A3
TQBJ0993
O/I BOOK (Ge/It/Fr/Du)
150EGS, 152EGS
A3
TQBJ0994
O/I BOOK (Da/Sw/Fi)
150EGS, 152EGS
A3
TQBJ0995
O/I BOOK (Po/Cz/Sp)
150EGS
A3
TQBJ0996
O/I BOOK (En/Cf)
150PCS
PCB6
TNPA6426
SMPS P.C.B
(RTL) 150EGS,152EGS
PCB6
TNPA6426AB
SMPS P.C.B
(RTL) 150PCS
C5700
F1BAF102A216
1000pF AC250 <= Vac <315
C5701
F0CAF104A218
0.1uF AC250 <= Vac <315
C5702
F0CAF104A218
0.1uF AC250 <= Vac <315
C5704
F1BAF4710005
470pF AC250 <= Vac <315
C5705
F1BAF4710005
470pF AC250 <= Vac <315
C5706
F1BAF102A216
1000pF AC250 <= Vac <315
DZ5701
D4EAY5110006
DIODE
L5701
G0B103G00023
INDUCTOR
L5702
G0B103G00023
INDUCTOR
T5700
G4DYZ0000085
SWITCHING TRANSFORMER
PC5721
B3PBA0000579
PHOTO COUPLER
PC5723
B3PBA0000579
PHOTO COUPLER
PC5724
B3PBA0000579
PHOTO COUPLER
P5701
K2AA2B000011
AC INLET
150EGS, 152EGS
P5701
K2AB2B000007
AC INLET
150PCS
F1
K5G312YA0159
F1
R5700
ERJ12YJ125U
1.2M 1/2W
R5701
ERJ12YJ125U
1.2M 1/2W