Audio Digital Amp - Panasonic SA-PT550GCP Service Manual

18.7. Audio Digital Amp

IC5000
:MAIN SIGNAL LINE
C1BA00000487
AUDIO DIGITAL POWER AMP
IN1M
3
FROM AUDIO
INPUT
IN1P STAGE
CN2009 CN5050 FRONT R
2
3 15
MUTE
SGND1
5
OSC
1
OSCILLATOR
MODE
23 MODE
SGND2
19
MUTE
CN2009 CN5050 FRONT L IN2P
22
1 17
INPUT
STAGE
IN2M
21
FROM SYSTEM CONTROL
Q5601,Q5602
Q5603,Q5604
CN2009 CN5050 MUTE C S
12 6
MODE 1
MUTING
CN2009 CN5050 MUTE F SW
MODE 2
CIRCUIT
13 5
CN2009 CN5050 MOD DA
17 1
IC5400
C1BA00000487
AUDIO DIGITAL POWER AMP
IN1M
3
FROM AUDIO
INPUT
SURROUND R STAGE
CN2009 CN5050 IN1P
2
9 9
MUTE
SGND1
5
OSC
1
OSCILLATOR
MODE
MODE
23
SGND2
19
MUTE
SURROUND L IN2P
CN2009 CN5050
22
7 11
INPUT
STAGE
IN2M
21
CN2009 CN5050 CENTER
11 7
CN2009 CN5050 SUBWOOFER
5 13
TO SYSTEM CONTROL
CN2009 CN5050 DC DET
16 2
+ 30V SENSE
- 30V SENSE
12 7 16 8
BOOT1
9
RELEASE1
DRIVER
PWM
HIGH
MODULATOR SWITCH1
CONTROL
OUT1
AND
10
ENABLE1
HANDSHAKE
DRIVER
LOW
STABI
TEMPERATURE SENSOR
MANAGER
CURRENT PROTECTION
VOLTAGE PROTECTION
BOOT2
15
ENABLE2
DRIVER
HIGH
CONTROL
OUT2
SWITCH2 AND
14
HANDSHAKE
PWM
DRIVER
RELEASE2
MODULATOR
LOW
11 13
- 30V SENSE
+ 30V SENSE
- 30V SENSE
12 7 16 8
BOOT1
9
RELEASE1
DRIVER
PWM
HIGH
SWITCH1
MODULATOR
CONTROL
OUT1
AND 10
ENABLE1
HANDSHAKE
DRIVER
LOW
STABI
TEMPERATURE SENSOR
MANAGER
CURRENT PROTECTION
VOLTAGE PROTECTION
BOOT2
15
ENABLE2 DRIVER
HIGH
CONTROL
SWITCH2 OUT2
AND
14
HANDSHAKE
PWM
DRIVER
RELEASE2
MODULATOR
LOW
11 13
- 30V SENSE
IC5500
C0JBAB000902
INVERTER GATE
IC5501
(CLOCK GENERATOR)
C0JBA000716
D-TYPE FLIP-FLOP
5 6 11 10 9 8 3 CP1 Q1
5 D1 Q1 2
SD1
CD1
X5500 4 6
- 30V SENSE
IC5200
C1BA00000487
AUDIO DIGITAL POWER AMP
12
FR +
IN1M
3
INPUT PWM
MODULATOR
CENTER IN1P STAGE
2
MUTE
SGND1
5
STABI
OSC
1
OSCILLATOR
MANAGER
MODE
MODE 1
MODE
23
FL +
SGND2
19
MUTE
IN2P
22
INPUT PWM
STAGE MODULATOR
IN2M
21
- 30V SENSE
IC5300
C1BA00000487
AUDIO DIGITAL POWER AMP
12
SR +
IN1M
3
PWM
INPUT
SUBWOOFER
STAGE MODULATOR
IN1P
2
MUTE
SGND1
5
STABI
OSC
1
OSCILLATOR
MANAGER
MODE 2 MODE
23 MODE
SL +
SGND2
19
MUTE
IN2P
22
INPUT PWM
STAGE MODULATOR
IN2M
21
1
89
+ 30V SENSE
FL +
7 16 8
BOOT1
9
RELEASE1
DRIVER
HIGH FR +
SWITCH1
CONTROL
OUT1
AND 10
ENABLE1
HANDSHAKE
DRIVER
LOW
SL +
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
BOOT2
15
SR +
ENABLE2 DRIVER
HIGH
CONTROL
OUT2
SWITCH2 AND
14
HANDSHAKE
DRIVER
RELEASE2
LOW
C +
C -
11 13
- 30V SENSE
SW +
+ 30V SENSE
SW -
7 16 8
BOOT1
9
RELEASE1
DRIVER
HIGH
SWITCH1
CONTROL
OUT1
AND
10
ENABLE1
HANDSHAKE
DRIVER
LOW
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
BOOT2
15
ENABLE2
DRIVER
HIGH
CONTROL
SWITCH2 OUT2
AND
14
HANDSHAKE
DRIVER
RELEASE2
LOW
13
11
- 30V SENSE
Q5101,
Q5102
DC DETECT
Q5641
FAN LOCK
DETECT
Q5640,
Q5642,
Q5644
FAN MOTOR
FAN DC
DRIVE
SA-PT550GCP AUDIO DIGITAL AMP BLOCK DIAGRAM
SA-PT550GCP
SPEAKERS
FRONT L
JK5001
+
7
JK5001
-
8
FRONT R
JK5001
+
5
JK5001
-
6
SURROUND L
JK5001
+
11
JK5001
-
12
SURROUND R
JK5001
+
9
JK5001
-
10
CENTER
JK5001
+
3
JK5001
-
4
SUBWOOFER
JK5001
+
1
JK5001
-
2
FAN
FAN LOCK CN5501
3
FAN DC OUT CN5501
1
M
FAN GND CN5501
2