Toa A-9120DHM2 - Block Diagram Overview

133
INPUT SELECT
INPUT VOLUME
Vacuum Fluorescent Display
1
2
3
4
5
6
7
8
OUTPUT SEL
OUTPUT VOLUME PARAMETER ESC/BACK
UTILITY
ENTER
MEMORY
ON/OFFON/OFF
POWER
DIN
#1
#2
ADC
#1
#8
ADC
#2
#7
DIN
#3
#4
ADC
#3
#6
ADC
#4
#5
DIN
#5
#6
DIN
#7
#8
SLOT#1
MIXOUT
DAC
1
DSP
R–>V
CONVERT
REMT-VOL1
REMT-VOL2
RS232
MODE SW
MATRIX/MIXER
CONTROL
INPUT
CONTROL
OUTPUT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
H
E
H
E
CI1
CI2
CI3
CI4
E
CO1
CO2
CO3
CO4
E
DI1
DIS1
ANALOG
DIGITAL
DI2
DIS2
DI3
DIS3
DI4
DIS4
EEPROM
I2C
CPU
DI1
DI2
DI3
DI4
DI1
DI2
DI3
DI4
DI1
DI2
DI3
DI4
TXDM8
RXDM8
I2C
DOUT
1
2
3
4
5
6
7
8
2
SLOT#2
MIXOUT
SLOT#3
MIXOUT
SLOT#4
MIXOUT
SLOT#5
MIXOUT
Dout 1
Dout 2
Dout 3
Dout 4
Dout 1
Dout 2
Dout 3
Dout 4
Dout 1
Dout 2
Dout 3
Dout 4
SLOT#6
MIXOUT
AIN
AIN
AIN
AIN
AIN
AIN
AIN
AIN
SLOT#7
MIXOUT
SLOT#8
MIXOUT
TXD
RXD
LPF
LPF
VOLUME
CONTROL
TXD
I2C
RXD CONTROL I/O
INPUT SELECT SIGNALS
KEY&DISPLAY CONTROL
RXD
TXD
MODE
232RXD
232TXD
A-9060DHM2/9120DHM2
POWER SUPPLY
AC IN
MAIN_TRANS
+VCC
–VCC
POWER AMP
SUB_TRANS (EXCEPT M-9000M2)
+24 V
–24 V
ANALOG
+6 V DSP/AD/DA
+3.3 VBU CPU
–30 V
AC5 V VFD
AC5 V
PRE
AMP
OUT 1
H
C
E
H: Hot
C: Cold
E: Earth
PRE
AMP
OUT 2
H
C
E
H: Hot
C: Cold
E: Earth
PRE
AMP
OUT 2
H
C
E
NE5532
NE5532
M-9000M2
NE5532
PRE AMP
OUT 1
PWR AMP
IN 1
PRE AMP
OUT 2
PWR AMP
IN 2
POWER
AMP
POWER
AMP
SPEAKERS
OUT 1
+
–
+
–
FAN
FAN CONTROL
RELAY
NE5532
RELAY
+–
VOLUME
OUT 2
A-9060SM2/9120SM2/9240SHM2
NE5532
PRE AMP
OUT 1
PWR AMP
IN
POWER
AMP
SPEAKERS
A-9240SHM2 CU
70 V
+
+
–
–
FAN
FAN CONTROL
RELAY
NE5532
+
–
SPEAKERS
70 V
25 V
8 Ω
COM
70 V
25 V
8 Ω
COM
TRANS IN
DIRECT
E
ANALOG
DIGITAL
ANALOG
DIGITAL
ANALOG
DIGITAL
I2C
I2C
I2C
I2C
I2C
I2C
I2C
I2C
I2C
1
8
1
2
1
2
2
7
3
6
4
5
at ANALOG INPUT
at DIGITAL INPUT
INTERNAL ADC / MODULE I2S
SIGNAL SELECTORS
Remarks
Each pair of Inputs 1 and 8, 2 and 7, 3
and 6, and 4 and 5 is the analog inputs
of ADC (Analog-Digital Converter).
So, when a digital input module such
as the D-001T/R is inserted into Slot 1,
for example, the digital input selector
DIS1 is switched over to the DIGITAL
position, thereby disabling the use of
analog Inputs 1 and 8.
Consequently, Slot 8's analog input
(AIN) cannot be used.
Likewise, when Slot 2 is occupied by
the D-001T/R, Slot 7's analog input
cannot be used; and when Slot 3 is
occupied, Slot 6's analog input cannot
be used.
A-9060SM2 CU, A-9120SM2 CU
70 V Hi-Z BTL POWER AMP
Output Transformer-less model
70 V Hi-Z BTL POWER AMP: A-9060DHM2 CU, A-9120DHM2 CU
Single-END POWER AMP
with Output Transformer model
21. BLOCK DIAGRAM