Yamaha TX6n Block Diagram

Specifications
TX6n/5n/4n Owner’s Manual
18
Block Diagram
1+
2+
1– 2–
1+
2+
1– 2–
Current
Sensor
Power Amplifier Stage
Voltage Amplifier Stage
Differential Amplifier Stage Differential Amplifier Stage
MAIN TRANSFORMER CHA
FG
FAN(L)
PowerSW
PHASE SHIFT SWITCHING
+B_2 –B_2 +E_2+15V –E_2 –E+2+15V +E_2
–15A +5D +3.3D +5A +15A AGND DGND +24A_A
SUB TRANSFORMER
–5A
+B_1 –B_1 +E_1+15V –E_1 –E_1+15V +E_1
MAIN TRANSFORMER CHB
FAN(R)
OUTPUT
(SPEAKERS)
FB
+B_1 +E_1+15 +E_1 –E_1+15 –E_1 –B_1
Total Gain: +37dB Total Gain: +37dB
PGND
_
1
CH B
CH A
AC VOLTAGE
DETECT
VOLTAGE
SENCE
+15VA +15VA
+15VA PGND_1
FAN CONTROL
CIRCUIT
FAN CONTROL
CIRCUIT
PGND_2
PSW
DETECT
+5VA
+3.3VD
–15VA
–5VA
LCD Module
SENSE_U
SENSE_I
A/D
Volume
Control D/A Volume
Control
CPU
ANALOG AUDIO
FG
ANALOG AUDIO INPUTs
[+24dBu] MAX ANALOG AUDIO Signals
[+13.2dBu] MAX
GAIN –10.8dB GAIN –10.8dB
Channel B Channel A
BA
Negative
Feedback
Loop
Network
Negative
Feedback
Loop
Network
Current
Sensing
Voltage
Limitter
Voltage
Limitter
EEEngine EEEngine
ASO
Limitter
Temperature
sensor
Temperature
sensor
+B_2 +E_2+15
+E_2
–E_2+15
–E_2 –B_2 PGND_2
Voltage
Sensor
Current
Sensor Voltage
Sensor
BA
Power Amplifier Stage
Voltage Amplifier Stage
FB
EEEngine(–B)
EEEngine(+B)
Voltage
Limitter
Voltage
Limitter
Current
Sensing
ASO
Limitter
Protection
Relay
Protection
Relay
Clip
Detector
Clip
Detector
DIT
IN
OUT
THRU
DIR
+90°C
PS HEAT SINK
PS HEAT SINK
150Apeak
150Apeak
TEMPERATURE
SENSOR
TEMPERATURE
SENSOR
CONTROL
IC
+90°C
SHUTDOWN
CIRCUIT
(LATCH)
SHUTDOWN
CIRCUIT
(LATCH)
OVERCURRENT
DETECTOR
OVERCURRENT
DETECTOR
SWITCHING
DRIVER
SWITCHING
DRIVER
RELAY RELAY DRIVE
CIRCUIT
RELAY DRIVE
CIRCUIT
RELAY
+24 +24
DSP
CLIP
RELAY_PA TEMP_PA FAULT_OUTPUT PSW_DETECT MAINS TEMP_PS RELAY_PS SHUTDOWN_PS FAN_CONTROL FAN_MONITOR
FAULT
OUTPUT
NETWORK
MY SLOT AES EBU
POWER(WH) STANDBY(OR) PARALLEL(OR) BRIDGE(GR) PROTECTION(RE) NETWORK(GR) IDENTIFY(BL) MUTE(RE) ALERT(OR) CLIP(RE) SIGNAL(GR)
MUTE
FUNCTION
HOME EXIT ENTER
CHA CHA CHB CHB
CHA CHB CHA CHB CHA CHB CHA CHB
ENCODER
EMI
FILTER
SIO
SWITCHING
CONTROLLER