Mitsubishi Electric ED-310BE-OL4 Service Manual page 21

IC260 TC203G04AF-0011(QZ
SYNCOUT 49
HDBIN 50
VDIN 51
VDOUT 52
VDFIN 53
VDFOUT 54
HDOUT0 55
HDOUT1 56
HDSEL 57
VDOUT0 58
INTEXT 59
VDMODE 60
BLK 61
POL1 62
POL2 63
ZOOMC 64
IC2G1 TC74VHC123AFT-EL
7
RX/CX
15
6
CX
14
1
A
9
2
B
10
3
CLR
11
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48 47 46 45
SYNC
HD
SEPARATION
VD
CIRCUIT
A
Z
B
VERTICAL
COUNTER
VERTICAL
DECODER
THINNED-OUT CONTROL
/ POLARITY CORRECTION
ZOOM
CORRECTION
1 2 3 4
Vcc Vref
16
L
C1
+
QN
VCC
R
D Q
F/F
CK Q
search engine
44 43 42 41 40 39
RESET
RESET
CIRCUIT
VDMODE
INTEXT
A
Z
EQUALIZING PULSE
B
LIMITER CIRCUIT
FIELD
FIELD
A
DISCRIMINATION
Z
B
VERTICAL
COUNTER
VERTICAL
DECODER
HORIZONTAL
DECODER
CLOCK
FREQUENCY
DIVIDING CIRCUIT
CLOCK SELECTION
CIRCUIT
5 6 7 8 9 10 11
Vref
H
C2
+
5
Q
13
1
Q
12
21
38 37 36 35 34 33
MODE SETTING
HORIZONTAL
COUNTER
HORIZONTAL
DECODER
CHROMA HD
CIRCUIT
PHASE
DETECTION
HORIZONTAL
COUNTER
VCO
PLLCLK
(MULTIPLY
CIRCUIT)
PHASE
COMPARISON
CIRCUIT
12 13 14 15 16
IC70C SN74AHCT244PWR
1OE 1
2
1A1
1A2
4
1A3 6
8
1A4
19
2OE
11
2A1
13
2A2
15
2A3
17
2A4
32 VPOS2
MODE
SETTING
31 VPOS3
CIRCUIT
30 UONS
29 SIDE2
28 SIDE1
27 ZJSEL
26 JUST
25 ZOOM
24 VSS
23 AVSS
22 AGS
PLL
21 BDRV2
20 BDRV1
19 AVDD
18 VDD
17 VCOO
18 1Y1
16
1Y2
14 1Y3
12 1Y4
9
2Y1
7
2Y2
5
2Y3
3
2Y4