KAC-PS621/X621
2
BLOCK DIAGRAM
●
PREAMPLIFIER UNIT (X08-4150-10)
Ref. No
Application / Function
Operation / Condition / Compatibility
IC1
Infrasonic filter
IC3
Tone and volume variable
Controlled by microprocessor
IC4
6dB voltage amplification
IC5
HPF
LPF
IC6
Lch : 6dB voltage amplification
Rch : Signal 180 reverse and 6dB voltage amplification
IC7
LCD driver
Controlled by microprocessor
●
AUDIO UNIT (X09-5770-10)
Ref. No
Application / Function
Operation / Condition / Compatibility
IC1
Buffer
IC2
DC/DC converter
IC3
AMP communication buffer
COMPONENTS DESCRIPTION
IC1,10
ISO AMP
ISO AMP
ISF
ISF
HPF
HPF
BUFFER
BUFFER
LPF
CONTROL
MUTE
MUTE
AMP
CONTROL
AMP
POWER
AMP
POWER
AMP
IC1
IC5
IC4,6
IC3
Q101
Q107-135
OUT
IN
OUT
IN
L
R
OPERATION
IFS
FILTER
SENSITIVITY
AMP CONT
OUT-R
OUT-L
H/U COM
AMP COM
IC6
O.C. PROTE.
D.C. PROTE.
T.M. PROTE.
O.V. PROTE.
5V AVR
+15V AVR
-15V AVR
BATT
GND
P-CON
Q66
u-COM
Q61
Q62
FAN
DISP.
MO/ST
ON/OFF
HPF/OFF/LPF
5V-0.2V
ON/OFF
6dB
12dB
24dB
DC/DC CONV.
