Digital Audio Amp - Panasonic SA-VK470EE Service Manual

18.7. Digital Audio Amp

: MAIN SIGNAL LINE
FRONT R
CN2808 CN5050
FROM AUDIO
3 15
Q5601
Q5603,Q5604
CN2808 CN5050 MUTE F MUTING
FROM
MODE
13 5 CIRCUIT
SYSTEM CONTROL
CN2808 CN5050 MOD DA
17 1
SW+5V
CN2808 CN5050 FRONT L
FROM AUDIO
1 17
IC5500
C0JBAB000902
INVERTER GATE
(CLOCK GENERATOR)
FHOP
CN2808 CN5050
1 2 3 4 5 6
14 4
D5501
X5501 X5500
D5502
FROM/TO
SYSTEM CONTROL
CN2808 CN5050
DC DET
16 2
IC5501
C0JBAF000716
D-TYPE FLIP-FLOP
11 10 8
9 3 CP1 O1 1
5 D1 O1 2
14
14 CD1 SD1
4 6
SW+5V
+ 30V SENSE
- 30V SENSE
IC5000
C1BA00000487
AUDIO DIGITAL POWER AMP
12 7
IN1M RELEASE1
3
PWM
INPUT
SWITCH1
STAGE MODULATOR
IN1P
CONTROL
2
AND
ENABLE1
HANDSHAKE
MUTE
SGND1
STABI
OSC
TEMPERATURE SENSOR
OSCILLATOR
MANAGER
MODE CURRENT PROTECTION
MODE
23
VOLTAGE PROTECTION
19 SGND2
ENABLE2
MUTE
CONTROL
IN2P SWITCH2 AND
22
HANDSHAKE
INPUT
PWM
RELEASE2
STAGE MODULATOR
IN2M
21
- 30V SENSE
95
16 8
BOOT1
9
DRIVER
HIGH
OUT1
FR +
10
DRIVER
LOW
BOOT2
15
DRIVER
HIGH
OUT2
FL+
14
DRIVER
LOW
13
11
Q5101,Q5102
DC DETECT
SA-VK470EE DIGITAL AUDIO AMP BLOCK DIAGRAM
SA-VK470EE
JK5001
+
SPEAKER
1
JK5001
- FRONT R
2
JK5001
+
SPEAKER
3
JK5001
- FRONT L
4