Read Panasonic TX-50CX670E / TX-50CX680E / TX-50CXR700 (serv.man2) Service Manual online
40
10.2. Block Diagram (2/3)
10.3. Block Diagram (3/3)
Li
n
e
Fi
lt
e
r
LF7104
F7101
3
4
1
CF7101
~
~
+
-
D7106
D7104
D7105
IC7301
14
VS
9
VW
PWM
Controller
HOT
COLD
PC7301
Photo coupler
1
VH
4
FB
5VS
P2
11
TV_SUB_ON
POWER_ON
12
9
1-5
10
KEY
IC7401
JK7101
MAIN INPUT
Li
n
e
Fi
lt
e
r
LF7105
3
2
4
1
T7202
1
3
IC7201
PFC
Control IC
7
OUT
8
VCC
Q7203
Q7202
4
14,9
T7303
6
PC7303
Photo coupler
PC7302
Photo coupler
IC7405
Reg
10
Vin
1
Sw
16V
3
PGS
10
VCC
D7304
12,7
5VS
Q7401
P-BOARD
9
EN
K-BOARD
K10
2
3
4
5
7
1
STBY 3.3V
SUB3.3V
RM2800
VCC
OUT
SN2800
AI
2
4
VCC
OUT
D2802
R
G
T
O
A10B
REMOTE
AI
G LED
R LED
SUB3.3V
AI
STBY 3.3V
STBY 3.3V
R LED
G LED
REMOTE
28V
2
Q7404
Q7402
P3
1-4
8
TO LDP3
Li
n
e
Fi
lt
e
r
LF7103
3
4
1
2
4
3
14,9
T7302
12,7
28V
16V
Q7405
Q7403
16V
KEY
CONTROL
SW2851
SW2852
SW2854
SW2855
SW2853
SW2857
TO A02A
IC7800
LED DRIVER
DC/DC
8
STB
39
FAIL
26
CL7
LDP1
3
T
O P
ANEL
BL_SOS
BL_ON
BL_PWM2
BL_PWM3
BL_PWM4
BL_PWM5
BL_PWM6
23
PWM7
22
PWM6
21
PWM5
20
PWM4
19
PWM3
15
BS7
Q7802
27
CL6
4
14
BS6
Q7803
28
CL5
5
13
BS5
Q7804
29
CL4
6
12
BS4
Q7805
30
CL3
7
11
BS3
Q7806
33
VREF
Cathode 2
Cathode 3
Cathode 4
Cathode 5
Cathode 6
Q7815
BL_ECO
Q7812
BL_PWM7
18
PWM2
31
CL2
12
10
BS2
Q7807
Cathode 7
2
2
N
4
CS
28V
L7801
1,2
4,5
4 I
N
7
Out
40
VCC
OCP
5
OVP
Anode2
Anode1
LDP3
1-4
8
TO
P
3
P
3
8
VDD
15.6V
LDP4
4
T
O A02A
5
3
6
8
9
13
12
BL_PWM1
24
PWM8
BL_PWM8
17
PWM1
11
10
2
LDP-BOARD
32
CL1
9
BS1
Q7808
Cathode 8
25
CL8
1
16
BS8
Q7801
Cathode 1
IC7901
LED DRIVER
DC/DC
8
STB
39
FAIL
23
PWM7
22
PWM6
21
PWM5
20
PWM4
19
PWM3
33
VREF
18
PWM2
24
PWM8
17
PWM1
26
CL7
15
BS7
Q7902
27
CL6
14
BS6
Q7903
28
CL5
13
BS5
Q7904
29
CL4
12
BS4
Q7905
30
CL3
11
BS3
Q7906
31
CL2
10
BS2
Q7907
32
CL1
9
BS1
Q7908
25
CL8
16
BS8
Q7901
T
O P
ANEL
8
LDP2
6
4
5
3
7
8
1
2
11
10
IC7801
Switching
DRIVER
40
VCC
5
OVP
Anode3
12
Anode2
Anode1
11
10
Anode3
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