Digital Audio Amp - Panasonic SA-PT470EB Service Manual

14.7. Digital Audio Amp

: AUDIO OUTPUT SIGNAL LINE
IC5000
C1BA00000487
AUDIO DIGITAL POWER AMP
IN1M
3
INPUT
STAGE
CN2009 CN5050 FRONT R IN1P
2
3 15
MUTE
5 SGND1
OSC
1
FROM AUDIO
MODE
MODE
23
19 SGND2
MUTE
CN2009 CN5050 FRONT L IN2M
21
1 17
INPUT
STAGE
IN2P
22
Q5601,Q5602
Q5603,Q5604
CN2009 CN5050 MUTE S C
12 6
MODE 1
MUTING
FROM CN2009 CN5050 MUTE F SW
MODE 2
CIRCUIT
SYSTEM CONTROL 13 5
CN2009 CN5050
MOD DA
17 1
IC5400
C1BA00000487
5V
AUDIO DIGITAL POWER AMP
<SW+5V>
IN1M
3
INPUT
SURROUND R STAGE
CN2009 CN5050 IN1P
2
9
MUTE
5 SGND1
OSC
1
MODE
23 MODE
FROM AUDIO
19
SGND2
MUTE
SURROUND L
CN2009 CN5050 IN2M
21
7 11
INPUT
STAGE
IN2P
22
CN2009 CN5050 CENTER
11 7
SUBWOOFER
CN2009 CN5050
5 13
CN2009 CN5050 FHOP
14 4
FROM/TO
SYSTEM CONTROL
CN2009 CN5050 DC DET
16 2
CN2009 CN5050 ECO
15 3
+ 30V SENSE
- 30V SENSE
12 7 16 8
BOOT1
RELEASE1
DRIVER
PWM
HIGH
SWITCH1
MODULATOR
CONTROL
OUT1
AND
ENABLE1
HANDSHAKE
DRIVER
LOW
STABI
TEMPERATURE SENSOR
OSCILLATOR
MANAGER
CURRENT PROTECTION
VOLTAGE PROTECTION
BOOT2
ENABLE2 DRIVER
HIGH
CONTROL
OUT2
SWITCH2 AND
HANDSHAKE
PWM
DRIVER
RELEASE2
MODULATOR
LOW
11 13
- 30V SENSE
+ 30V SENSE
- 30V SENSE
12 7 16 8
BOOT1
RELEASE1
DRIVER
PWM
HIGH
MODULATOR SWITCH1
CONTROL
OUT1
AND
ENABLE1
HANDSHAKE
DRIVER
LOW
STABI
TEMPERATURE SENSOR
OSCILLATOR
MANAGER
CURRENT PROTECTION
VOLTAGE PROTECTION
BOOT2
ENABLE2
DRIVER
HIGH
CONTROL
SWITCH2 OUT2
AND
HANDSHAKE
PWM
DRIVER
RELEASE2
MODULATOR
LOW
11 13
- 30V SENSE
IC5500
C0JBAB000902
HEX INVERTER
(CLOCK GENERATOR)
D5501
1 2 3 4 5 6 11 10 9 8
14
X5501 X5500
5V
D5502
<SW+5V>
IC5200
C1BA00000487
AUDIO DIGITAL POWER AMP
9
FR +
IN1M
10
3
PWM
INPUT
STAGE MODULATOR
CENTER IN1P
2
MUTE
5 SGND1
OSC
1
15
OSCILLATOR
MANAGER
MODE
MODE 1
MODE
23
FL +
14
19 SGND2
MUTE
IN2P
22
INPUT PWM
STAGE MODULATOR
IN2M
21
IC5300
C1BA00000487
AUDIO DIGITAL POWER AMP
9
SR +
IN1M
10
3
INPUT PWM
SUBWOOFER MODULATOR
IN1P STAGE
2
MUTE
5 SGND1
OSC
1
15
OSCILLATOR
MANAGER
MODE 2 MODE
MODE
23
SL +
19 SGND2
14
MUTE
IN2P
22
INPUT PWM
STAGE
MODULATOR
IN2M
21
IC5501
C0JBAF000716
D-TYPE FLIP-FLOP
3 1
CP1 O1
5 D1 O1 2
14 CD1 SD1
4 6
105
- 30V SENSE + 30V SENSE
FL +
12 7 16 8
BOOT1
9
RELEASE1
DRIVER
HIGH FR +
SWITCH1
CONTROL
OUT1
AND 10
ENABLE1
HANDSHAKE
DRIVER
LOW
STABI
SL +
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
BOOT2
15
SR +
ENABLE2 DRIVER
HIGH
CONTROL
SWITCH2 OUT2
AND
14
HANDSHAKE
DRIVER
RELEASE2
LOW
C +
C -
11 13
- 30V SENSE
SW +
+ 30V SENSE
- 30V SENSE
SW -
12 7 16 8
BOOT1
9
RELEASE1
DRIVER
HIGH
SWITCH1
CONTROL
OUT1
AND
10
ENABLE1
HANDSHAKE
DRIVER
LOW
STABI
TEMPERATURE SENSOR
CURRENT PROTECTION
VOLTAGE PROTECTION
BOOT2
15
ENABLE2
DRIVER
HIGH
CONTROL
SWITCH2 OUT2
AND
14
HANDSHAKE
DRIVER
RELEASE2
LOW D5305
11 13
- 30V SENSE
SA-PT470EB/EF/EG DIGITAL AUDIO AMP BLOCK DIAGRAM
SPEAKERS
FRONT L
JK5001
+
6
JK5001
-
5
FRONT R
JK5001
+
8
JK5001
-
7
SURROUND L
JK5001
+
2
JK5001
-
1
SURROUND R
JK5001
+
4
JK5001
-
3
CENTER
JK5001
+
10
JK5001
-
9
SUBWOOFER
JK5001
+
12
JK5001
-
11
D5306
Q5101,Q5102
DC DETECT
FAN
Q5641
FAN LOCK FAN LOCK CN5501
DETECT
3
D5645
FAN DC OUT CN5501
1
FAN MOTOR
M
FAN DC
DRIVE
FAN GND CN5501
Q5640,
Q5642, 2
Q5644