Panasonic SA-AKX10PH - Power Amplifier

75
15.3. Power Amplifier
SA-AKX10PH/PN POWER AMPLIFIER BLOCK DIAGRAM
POWER AMPLIFIER
C1BA00000497
IC5900
121
CN5902CN2711
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-
FL IN
85
CN5902CN2711
MUTE F
310
CN5902CN2711
MOD DA
49
CN5902CN2711
DC DET
103
CN5902CN2711
FR IN
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
5V
5V
30V
-30V
-30V
30V -30V
-30V 30V
Q5906,Q5907
DC DETECT
Q5902,Q5903,Q5905
MUTING
CIRCUIT
QR5900,QR5901
SWITCH
Q5901
SWITCH
TH5900
+
-
3
JK5901
4
JK5901
+
-
FRONT (RIGHT)
FRONT (LEFT)
1
JK5901
2
JK5901
: AUDIO OUTPUT SIGNAL LINE
76
CN5902CN2711
FHOP1
FROM AUDIO
FROM/TO
SERVO/SYSTEM CONTROL
D-AMP P.C.B.
MAIN P.C.B.