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15.4. Power Amplifier
: AUDIO OUTPUT SIGNAL LINE
MAIN P.C.B.
MOD DA
MUTE F
F HOP
FROM/TO
SERVO/SYSTEM CONTROL
DC DET AMP
Q2027,Q2028,Q2029
Q2031,Q2032,Q2033
FAN
Q2034,Q2035
CN2010
-
1
CN2010
+
2
FAN
FAN
CIRCUIT
CN2009
-
1
CN2009
+
2
CN2012
CN5902
SURROUND R
3
10
FROM AUDIO
CN2012
CN5902
SURROUND L
1
12
Q5902,Q5903,Q5905
CN2012
CN5902
MOD DA
10
3
MUTING
CIRCUIT
CN2012
CN5902
MUTE F
5
8
5V
QR5900,QR5901
CN2012
CN5902
Q5901
FHOP1
INVERTER
6
7
SWITCH
5V
-30V
CN2012
CN5902
DC DET
9
4
FAN
CN2011
CN5050
FAN
15
3
Q5101,Q5102
CN2011
CN5050
DC DET
DC DETECT
16
2
IC5500
C0JBAB000902
HEX INVERTER
X5500,X5501
D5501,D5502
CLOCK
CN2011
CN5050
FHOP
OSC
GENERATOR
14
4
CIRCUIT
Q5601,Q5603,Q5604
CN2011
CN5050
MOD DA
17
1
MUTING
MODE
CIRCUIT
CN2011
CN5050
MUTE F
13
5
CN2011
CN5050
FRONT L HIGH
9
9
FROM AUDIO
CN2011
CN5050
FRONT L LOW
7
11
CN2011
CN5050
FRONT R LOW
1
17
CN2011
CN5050
FRONT R HIGH
3
15
CN2011
CN5050
SUBWOOFER
5
13
IC5900
C1BA00000497
30V
POWER AMPLIFIER
4
20
STABI
-30V
12
STABI
DRIVER
HIGH
SWITCH1
CONTROL
IN1+
INPUT
PWM
2
&
STAGE
MODULATOR
RELEASE1
HANDSHAKE
DRIVER
LOW
MUTE
ENABLE1
TEMP. SENSOR
OSC
1
OSCILLATOR
MANAGER
CURRENT PROTECTION
VOLT. PROTECTION
ENABLE2
MODE
23
MODE
TH5900
DRIVER
HIGH
SWITCH2
CONTROL
INPUT
PWM
IN2-
21
&
STAGE
MODULATOR
RELEASE2
HANDSHAKE
DRIVER
LOW
MUTE
6
18 17
-30V
-30V
IC5400
C1BA00000497
30V
POWER AMPLIFIER
4
20
STABI
-30V
12
STABI
DRIVER
HIGH
SWITCH1
CONTROL
INPUT
PWM
IN1+
2
&
STAGE
MODULATOR
RELEASE1
HANDSHAKE
DRIVER
LOW
MUTE
ENABLE1
TEMP. SENSOR
OSC
1
OSCILLATOR
MANAGER
CURRENT PROTECTION
VOLT. PROTECTION
ENABLE2
MODE
23
MODE
DRIVER
HIGH
SWITCH2
CONTROL
IN2-
INPUT
PWM
21
&
STAGE
MODULATOR
RELEASE2
HANDSHAKE
DRIVER
LOW
MUTE
6
18 17
-30V
-30V
90
SURROUND D-AMP P.C.B.
30V
-30V
8
11
BOOT1
9
OUT1
JK5901
10
+
1
SURROUND (RIGHT)
JK5901
-
2
PROT
7
-30V
BOOT2
15
JK5901
OUT2
14
+
3
SURROUND (LEFT)
JK5901
-
4
13
16
30V
DC DETECT
Q5906,Q5907
30V
-30V
8
11
BOOT1
9
JK5001
OUT1
10
+
FRONT (LEFT)
4
JK5001
-
3
PROT
7
-30V
BOOT2
15
JK5001
OUT2
14
+
FRONT (LEFT)
2
JK5001
-
1
13
16
30V
SA-AKX90PH/PR POWER AMPLIFIER (1/2) BLOCK DIAGRAM
FAN
DC DET
D-AMP P.C.B.
OSC
MODE
TO POWER AMPLIFIER
SECTION (2/2)
HIGH
LOW
P1
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