80
15.4. Power Amplifier
SA-AKX50PH/PN POWER AMPLIFIER BLOCK DIAGRAM
HEX INVERTER
C0JBAB000902
IC5500
5
13
CN5050
CN2011
MUTE F
FRONT L HIGH
FRONT L LOW
FRONT R LOW
FRONT R HIGH
1
17
CN5050
CN2011
MOD DA
1
CN2010
2
CN2010
2
16
CN5050
CN2011
DC DET
-
+
Q5101,Q5102
DC DETECT
Q2027,Q2029,Q2033
Q2034,Q2035
Q5601,Q5603,Q5604
MUTING
CIRCUIT
X5500,X5501
D5501,D5502
POWER AMPLIFIER
C1BA00000497
IC5400
OUT1
10
BOOT1
VDDP1
VSSP1
VSSP2
VDDP2
9
8
13
11
16
VDDA1
VDDA2
VSSA1
VSSA2
4
6
20
18
VSSD
17
2
IN1+
1
OSC
INPUT
STAGE
PWM
MODULATOR
RELEASE1
ENABLE1
ENABLE2
SWITCH1
MUTE
DRIVER
HIGH
DRIVER
LOW
CONTROL
&
HANDSHAKE
OUT2
14
BOOT2
15
PROT
7
21
IN2-
INPUT
STAGE
23
MODE
MODE
12
STABI
STABI
PWM
MODULATOR
OSCILLATOR
MANAGER
TEMP. SENSOR
CURRENT PROTECTION
VOLT. PROTECTION
RELEASE2
SWITCH2
MUTE
DRIVER
HIGH
DRIVER
LOW
CONTROL
&
HANDSHAKE
-30V
30V
-30V
-30V
30V
-30V
-30V
30V
+
-
2
JK5001
1
JK5001
+
-
FRONT (LEFT)
HIGH
FRONT (LEFT)
LOW
4
JK5001
3
JK5001
POWER AMPLIFIER
C1BA00000497
IC5000
OUT1
10
BOOT1
VDDP1
VSSP1
VSSP2
VDDP2
9
8
13
11
16
VDDA1
VDDA2
VSSA1
VSSA2
4
6
20
18
VSSD
17
2
IN1+
1
OSC
INPUT
STAGE
PWM
MODULATOR
RELEASE1
ENABLE1
ENABLE2
SWITCH1
MUTE
DRIVER
HIGH
DRIVER
LOW
CONTROL
&
HANDSHAKE
OUT2
14
BOOT2
15
PROT
7
21
IN2-
INPUT
STAGE
23
MODE
MODE
12
STABI
STABI
PWM
MODULATOR
OSCILLATOR
MANAGER
TEMP. SENSOR
CURRENT PROTECTION
VOLT. PROTECTION
RELEASE2
SWITCH2
MUTE
DRIVER
HIGH
DRIVER
LOW
CONTROL
&
HANDSHAKE
-30V
30V
-30V
-30V
30V
-30V
-30V
30V
+
-
6
JK5001
5
JK5001
+
-
FRONT (RIGHT)
HIGH
FRONT (RIGHT)
LOW
8
JK5001
7
JK5001
: AUDIO OUTPUT SIGNAL LINE
4
14
CN5050
CN2011
FHOP
OSC
MODE
FROM/TO
SERVO/SYSTEM CONTROL
FROM AUDIO
FROM AUDIO
MAIN P.C.B.
MUTE F
MOD DA
F HOP
DC DET AMP
FAN
FAN
CIRCUIT
9
9
CN5050
CN2011
15
3
CN5050
CN2011
11
7
CN5050
CN2011
17
1
CN5050
CN2011
3
15
CN5050
CN2011
FAN
FAN
CLOCK
GENERATOR
CIRCUIT
D-AMP P.C.B.
Summary of Contents for SA-AKX50PH
Page 13: ...13 5 Location of Controls and Components 5 1 Main Unit Key Button Operation ...
Page 14: ...14 5 2 Remote Control Key Button Operation ...
Page 15: ...15 5 3 Media Information ...
Page 20: ...20 6 4 Self Diagnostic Mode ...
Page 31: ...31 9 2 Main Components and P C B Locations ...
Page 74: ...74 ...
Page 84: ...84 ...
Page 112: ...112 ...
Page 118: ...118 ...
Page 132: ...132 MMH1003 ...