Panasonic PT-40LC12 Service Manual page 142

VIDEO SIGNAL PATH II BLOCK DIAGRAM (2/2)
IC9802 (D/A CONVERTER)
WF126
R DATA (8 BIT)
29-38
G DATA (8 BIT)
15-24
B DATA (8 BIT)
44
43
WF125
42
IC9803 (DAC)
SERIAL DATA 0 17
FROM
SERIAL CLOCK
SYSTEM CONTROL 16
BLOCK DIAGRAM
DAC CS(L) 16
VCC SW +5V
54,60
WF127
48 Q9809 TP2001
Q9803, 9806 Q2001-2010
D/A R-CUTOFF INVERTER
55 B
CONVERTER CONTROL AMP
WF128
51
TP2002
Q9802, 9805 Q9808 Q2011-2020
D/A G-CUTOFF INVERTER
57 B
CONVERTER CONTROL AMP
WF129
63
TP2003
Q9801, 9804 Q9807 Q2021-2030
B-CUTOFF INVERTER
D/A
B
4-13 59
CONVERTER CONTROL AMP
SW+15.3V
R-DRIVE CONTROL
3
G-DRIVE CONTROL 4
B-DRIVE CONTROL 5
R-CUTOFF CONTROL 18
G-CUTOFF CONTROL
19
LOGIC B-CUTOFF CONTROL 2
V-COM-R CONTROL 6
V-COM-G CONTROL 7
V-COM-B CONTROL 8
FRONT FAN CONTROL 9 FRONT FAN SPEED CONTROL
TO POWER SUPPLY
LAMP FAN CONTROL 12 LAMP FAN SPEED CONTROL
BLOCK DIAGRAM
SW+15.3V CONTROL SW+15.3V CONTROL
13
VCC SW +5V
11
Q2039, 2040
LEVEL SHIFTER
Q2031, 2032
LEVEL SHIFTER
Q2035, 2036
LEVEL SHIFTER
Q2033, 2034
LEVEL SHIFTER
Q2037, 2038
LEVEL SHIFTER
IC2009 (LEVEL SHIFTER)
VCC 2 SW +5V
VCC 1,30 SW +15.3V
7 LEVEL SHIFTER 26
6 LEVEL SHIFTER 27
5 LEVEL SHIFTER 28
LEVEL SHIFTER
8 25
9 LEVEL SHIFTER 23
22
10 LEVEL SHIFTER 21
20
11 LEVEL SHIFTER 19
18
0/3.3V ---> 0/15.3V
IC2003 (SAMPLING HOLD)
64,66,68,72,74,76
IC2001
(SW)
GATE PULSE
11 9
3
SW FRP
VCC 16 7
+15.3V
WF130
H
13
L 14
12
WF136
IC2004 (SAMPLING HOLD)
WF131
WF132
L 64,66,68,72,74,76
5
H 4
3
WF137 GATE PULSE
WF133 3
FRP
7
WF134
H
13
L
14
12
WF138
WF135
L
5
H 4
3
IC2005 (SAMPLING HOLD)
64,66,68,72,74,76
L
2
H 15
1 GATE PULSE
3
FRP
7
SW
VCC 16
+15.3V
11 9 10
IC2002
(SW)
IC2006 (SAMPLING HOLD)
WF142
64,66,68,72,74,76
GATE PULSE
3
FRP
7
IC2007 (SAMPLING HOLD)
64,66,68,72,74,76
GATE PULSE
3
FRP
7
IC2008 (SAMPLING HOLD)
64,66,68,72,74,76
GATE PULSE
3
FRP
7
SAMPLING & HOLD PULSE(2,4,6,8,10,12,14)
SAMPLING & HOLD PULSE(1,3,5,7,9,11,13)
MAIN VIDEO SIGNAL SUB VIDEO SIGNAL
SAMPLING
25,27,29,33,35,37
HOLD
VCC 19 SW +5V
50-57
WF139
Q2041-2046
LEVEL
SAMPLING SHIFTER
25,27,29,33,35,37
HOLD
VCC SW +5V
19
50-57
TP2006
(IC2006 PIN37 LINE)
SAMPLING
25,27,29,33,35,37
HOLD
VCC SW +5V
19
50-57
WF140
Q2047-2052
LEVEL
SAMPLING
SHIFTER
25,27,29,33,35,37
HOLD
VCC 19 SW +5V
50-57
SAMPLING
25,27,29,33,35,37
HOLD
VCC 19 SW +5V
50-57
WF141
Q2053-2058
LEVEL
SAMPLING SHIFTER
25,27,29,33,35,37
HOLD
VCC 19 SW +5V
50-57
VIDEO SIGNAL PATH II BLOCK DIAGRAM
VIDEO SIGNAL(MAIN/SUB)
SW+15.3V
LCD(R)
P2001-1
P2001-2 WF143
P2001-3
P2001-4
WF144
P2001-5 WF145
P2001-6 WF146
P2001-(7-18) WF147
P2001-19
P2001-20 WF148
P2001-21
P2001-22 WF149
P2001-23 WF150
P2001-24 WF151
P2001-25 WF152
P2001-26
WF153
P2001-27 WF154
P2001-28 WF155
P2001-29 WF156
P2001-30 WF157
P2001-31 WF158
P2001-32
P2001-33 WF159
P2001-34 WF160
P2001-35 WF161
P2001-36
LCD(G)
P2002-1
P2002-2 WF162
P2002-3
P2002-4 WF163
P2002-5 WF164
P2002-6 WF165
P2002-(7-18) WF166
P2002-19
P2002-20 WF167
P2002-21
P2002-22 WF168
P2002-23 WF169
P2002-24 WF170
P2002-25
WF171
P2002-26 WF172
P2002-27 WF173
P2002-28 WF174
P2002-29 WF175
P2002-30 WF176
P2002-31 WF177
P2002-32
P2002-33 WF178
P2002-34 WF179
P2002-35 WF180
P2002-36
LCD(B)
P2003-1
P2003-2 WF181
P2003-3
P2003-4 WF182
P2003-5 WF183
P2003-6 WF184
P2003-(7-18) WF185
P2003-19
P2003-20 WF186
P2003-21
P2003-22 WF187
P2003-23 WF188
P2003-24 WF189
P2003-25 WF190
P2003-26 WF191
P2003-27 WF192
P2003-28 WF193
P2003-29 WF194
P2003-30 WF195
P2003-31 WF196
P2003-32
P2003-33 WF197
P2003-34 WF198
P2003-35
WF199
P2003-36
PT-40LC12/PT-45LC12