KAC-PS1D/X1R
5
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PREAMPLIFIER UNIT (X08-4310-10)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC1 (1/2)
Signal amplification
Mixes Lch and Rch to make Mono signal.
IC1 (2/2)
Signal amplification
Buffer to send the signal that comes through LPF and Bass Boost to the Line Out.
IC2
Frequency fixed LPF
LPF fixed at 400Hz.
IC3
Signal amplification
Amplifies the signal that comes through SensVol and outputs it with low impedance.
IC4
Frequency variable LPF
LPF with variable frequency between 40~200Hz.
IC5,6 (1/2)
Band-cut filter
Attenuates the frequency in the specific range between 40~100Hz.
IC6 (2/2)
Reverse circuit
Changes the phase by 180 degrees.
IC7
Frequency variable HPF
Attenuates the frequency in the range of 15~60Hz that is lower than the specific frequency.
IC8 (1/2)
Signal amplification
Amplifies the signal component to reduce noises in the subsequent BRF stages.
IC11
FL driver
Communicate with the
µ
-com, generates the data for FL display and reads in KEY.
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MICROCOMPUTER: 78F0533GK011A (X09-856: IC1)
Pin No.
Pin Name
I/O
Application
Truth Value
Processing Operation Description
Table
1
P_CON
I
Clears the stop mode by turning the P-CON ON
L: Clear the stop mode
2
D_CURENT
I
Detects the D-class over current
Enters into the protection operations.
3
NC
O
Not used
Output L fixed
4
PON_ILLUM
O
LOGO LED+B SW
H: ON, L: OFF, Initial condition “L”
5
FAN1
O
FAN rotation control
q
H: Rotation, L: Stop, Initial condition "L"
6
RESET
I
Reset
7
D_POWER
O
D-class amplifier power supply control
H: D-class ON, L: D-class OFF
8
POWER_ON_1
O
Amplifier power supply control
H: Amplifier power supply ON, Initial condition “L”
9
FLASH_W
I
Used when writing in the flash
10,11
NC
O
Not used
Output L fixed
12
REGC
-
13
VSS
-
14
EVSS
-
15
VDD
-
16
EVDD
-
17,18
NC
O
Not used
Output L fixed
19
NC
O
20
5V_SW
O
SW5V ON: L
L: SW5V ON, Initial condition “L”
21
NC
O
Not used
Output L fixed
22
PON_FL
O
FL power supply (Grid and Filament) control
H: ON, L: OFF
23~33
NC
O
Not used
Output L fixed
34
ROTARY_CW
I
Encoder pulse input
Detects pulse width
MICROCOMPUTER’S TERMINAL DESCRIPTION
COMPONENTS DESCRIPTION
