Panasonic TC20LA5 - 20" LCD COLOR TV, Руководство по обслуживанию

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8 Block Diagram
+
+
+
Y
PR PB
RED WHITE
+
A
V_IN2
A
V_IN1
R V L V L R
Y
C C
Y
+
PUSH
+
+
V1-V
V1-L
V2-V
V1-C
R
SOS
V1-R
V1-V
AGC_DET
SW
MAIN_SW
SDA1
V1-C
Y
SCL1
KEY
V1-L
V2-Y
PR
V1-R
V2-C
V2-Y
SW
TREBLE
TV-L
SDA1
PR
V2-V
PB Y
5V(S)
V2-S
R
SCL1
V2-L
BASS
L
SCL1
V1-S
PB
L
V1-Y
V2-R
SDA1
V2-C
V1-Y
POWER_ON
TV-R
V2-S
V1-S
TV-L
TV-R
V2-L
V2-R
R23
1.62k
C939
Q2
C18
680u
D10
D94
Z2
R26
6.65k
L904
C905
C13
2200p
R25
3.16k
A9
CN1
L902
D9
SW7
R20
2.2k
R12
150
RC2
R14
2.2k
RX1
56k
R17
33K
D12
JK3002A
Y-
S
W
Y Y-
G
PB PB-G PR PR-G
RC3
D923
R1045
D7
RC1
SW4
R905
JK3004
D13
C6
330u
RX2
0
JK3001
D912
D910
R19
1K
D051
D5
R24
2.32k
R98 47K
C21
1000u
R18
2.2K
SW2
D053
R900
C11
0.1u
C20
4700u
SW5
R950
D913
CX2
0.47u
D924
D93
D900
D909
D14
D052
R3
0.1
CN2
SW6
RC4
C19
220u
R22
1.74k
D11
D915
SW3
R27
14.3k
R16
330
R1151
R948
*
2
COMPONENT
+24V(INV)
ANT
VIDEO
12
5
4
VIDEO
COLD
OVP DET:HIGH(ABNORMAL)
2
2
COLD
3
MATRIX
V
59
SWITCHING REGULATOR
1
+32V
(13V)
VIDEO
21
DRIVE
R
VIDEO OUT
IC1008
27
VIDEO
CH
13
TV
3
ERROR DET
TV RELAY
4
18
S DET
13
4
VIDEO2
10
14
3
17
AVR
7
8
1
TA2
5
VIDEO
3
6
8
VIDEO
SY OUT
18
SW1
+9V(S)
4
V/Y OUT
Y
(S)
AUDIO
11
2
AUDIO
IC908
V
S DATA1
TREBLE
AUDIO
SCL
AUDIO
16
+5V(S)
11
PC91
+9V(S)
41
R
A2
BTL
POWER SUPPLY UNIT
9
2
TV-V
10
(22V)
6
PRESET
Pr OUT
51
(10V)
2
+5V(M)
CONTROL
L
COMPONENT1
R
8
6dB AMP
+11V(S) DET
T91
25
5V GENE.
6
VOL
+5V(S) DET
5
+32V
S2 DET
+9V(S)
11
+9V
S DET
IC901
29
24
POWER SWITCH
V/Y
(3.3V)
52
AUDIO
1
14
16
BUFFER
2
IC903
17
A BOARD
17
COLD
L
TV_V
1
+12V
7
PR
V/Y
8
-6dB
2
CH
SWITCH
REG+5V
HOT
TEMP SENSOR
3
KEY SCAN
1
S CLOCK
L-OUT
+24V(INV)
44
(10V)
1
VIDEO1
C
TREBLE
4
13
Q3001
Q3006
TV/VTR
TUNER
RECTIFIER
12
MAIN SW DET
+11V(S)
26
10
AFT
S_CLOCK
AFT
43
POWER
6
2
SDA
S2 DET
VIDEO1
6
57
15
61
TA1
49
1
11
FILTER
18
Pr
9
+24V(INV)
6
1
14
R-OUT
C/Pb OUT
MTS DEMODULATER
R OUT
L
POWER ON
+5V(M)
IIC
5
24
4
IC2201
L
6
13
+11V(S)
(5.6V)
S DATA
42
S CLOCK1
Z91
8
Q001
S_DATA
BASS/
R
CIRCUIT
C/Pb
IC3001
AGC CONT
AVR
8
19
+5V(S)
INPUT SELRCTOR
Q3008
DEMODU
19
L OUT
HOT
DD1
(22V)
2
11
STBY+5V
23
+30V(BT)
AUDIO OUT
TV_L
L
4
10
PB
STANDBY
22
6
(10V)
BASS
C
A1
+5V
Y
VIDEO2
TA BOARD
5
28
AC CORD
Pr
12
Y
1
7
11
10
4
REG+5V
R
19
2
+9V(M)
54
64
2
12
V
+5V(M)
REG+5V DET
(5.1V)
HOT
+5V(M)
30
C/Pb
56
+24V(INV)
AUDIO
9
7
TU001
AVR
OSC
7
15
9
TV_R
+B
9
SWITCHING TRANS
6
VOL
RL1
+5V(M) 10
16
IC1011
SWITCHING
5
3
1
7
6
2
R
L
DC OUT 53
Q3009,Q3010
INV L:output mode
H:input mode
8
5
A
6
C
4 2 8
D
E
1
B
3 7
5
6
4
2
3
1
11
10
8
9
7
TC-20LA5/LE5 Block Diagram TC-20LA5/LE5 Block Diagram
TC-20LA5 / TC-20LE5
15