Panasonic PT-56LCX70 Service Manual page 59

AUDIO SIGNAL PATH BLOCK DIAGRAM
TUNER P.C.B. MAIN P.C.B.
TU8970
(TUNER UNIT)
AUDIO(R) 5 CN8970-5 CN8801-5
ANALOG
AUDIO(L) 4 CN8970-1 CN8801-1
JK3101
PC
AUDIO IN
FRONT JACK/OPERATION P.C.B.
JK6701
AUDIO IN3 (R)
AUDIO IN3 (L)
JK3501
AUDIO IN1 (R)
AUDIO IN1 (L)
JK3502
AUDIO IN2 (R)
AUDIO IN2 (L)
JK3505
COMPONENT
AUDIO IN1 (R)
COMPONENT
AUDIO IN1 (L)
JK3507
COMPONENT
AUDIO IN2 (R)
COMPONENT
AUDIO IN2 (L)
JK3509
DVI
AUDIO IN2 (R)
DVI
AUDIO IN2 (L)
JK3503
AUDIO OUT (R)
AUDIO OUT (L)
REAR JACK P.C.B.
CN3001-22 CN3501-22 IC4101 (AUDIO SW)
CN3001-21 CN3501-21
13
21
40 26
AUDIO
7
SW
4
(R-CH)
11
9 24
15
17
CN3001-27 CN3501-27
12
20
CN3001-26 CN3501-26 39 25
AUDIO
6
SW
3
(L-CH)
10
8 23
14
16
VCC
5
DTV+9V
CN6701-5 CN3502-5
CN6701-3 CN3502-3
Q4102 Q4103
MUTE-ON MUTE-ON
Q4101
DRIVE
MAIN P.C.B.
IC4001
(AUDIO DSP)
A/D
CN3501-20 CN3001-20 79
CONVERTER
PWM
OUTOUT
A/D
CN3501-19 CN3001-19 78
CONVERTER
PWM
OUTOUT
X4001
24.576MHz 33 24.576MHz CLOCK
OSC 34 24.576MHz CLOCK
AUDIO
PROCESSOR
AUDIO MUTE (L)
IC4003 (OP AMP)
CN3501-24 CN3001-24
1 2 73
D/A
CONVERTER 4,12,ETC
CN3501-23 CN3001-23 7 6 72
VCC
8
+9V
14,21,ETC
VOLUME CONTROL
I2C SERIAL CLOCK2
17 I2C
I2C SERIAL DATA2
18 I/F
HDMI
INTERFACE
DTV
INTERFACE
D4001
DIGITAL
SPDIF
38
AUDIO OUT
INTERFACE
(OPTICAL)
CN3501-25 CN3001-25
59
PT-56LCX70 / PT-61LCX70 / PT-50LCX7 / PT-56LCX7 / PT-61LCX7
AUDIO SIGNAL
IC4501
(AUDIO POWER AMP)
44 6 PWM CONTROL TIMING DRIVE 39 CN4501-3
CN4501-4
CN4501-5
CN4501-6
45 8 PWM CONTROL TIMING DRIVE 26
MUTE
42 16 PWM CONTROL TIMING DRIVE 31
43 18 PWM CONTROL TIMING DRIVE 28
MUTE
7 1,21,ETC
VDD
17
26,27,ETC
PVDD
Q4503 SOUND+18V
Q4501
+12V
Q4504-Q4506 REG.
MUTE
STBY+5V
CONTROL
Q4508 Q4507
(FROM IC5510(24))
HDMI-INT2(H)
15
Q4002 AUDIO MUTE (H)
FROM
Q4001 SOUND SOS (H) SYSTEM CONTROL
BLOCK DIAGRAM
LINE AUDIO MUTE (H)
IC4002
AVDD 1 +3.3V REG. 8 SUB+5V
L4002
DVDD SUB+3.3V
29
IC4004
DVDD 1 +1.8V REG. 7
HDMI SERIAL DATA
22
FROM VIDEO II
26 HDMI LRCK
SIGNAL PATH
27 HDMI BCK
BLOCK DIAGRAM
HDMI SPDIF
24 DTV SERIAL DATA
FROM VIDEO I
18 DTV LRCK
SIGNAL PATH
19 DTV BCK
BLOCK DIAGRAM
DTV SPDIF
39
AUDIO SIGNAL PATH BLOCK DIAGRAM
PT-56LCX70/PT-61LCX70/PT-50LCX7/PT-56LCX7
/PT-61LCX7/PT-50LCX7K/PT-56LCX70-K/PT-61LCX70-K
SPEAKER
(R-CH)
SPEAKER
(L-CH)