Sharp LC-46X8E Service Manual ▷ View online
LC-46X8E/S/RU
5 – 1
LC46X8E
Service Manual
CHAPTER 5.
MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATIONS
1. Detailed ICs Information
1.1. IC402 (VHiBD9305AF-1Y)
1.1.1 Block Diagram
1.1.2 Pin Connections and short description
Pin No.
Pin Name
I/O
Pin Function
1
RT
—
Timing Resistor external terminal.
2
CT
—
Timing Capacitor external terminal.
3
ENB
I
Control terminal.
4
GD
O
Gate drive output terminal.
5
VCC
—
Power supply terminal.
6
GND
—
Ground.
7
COMP
O
Error amplifier output terminal.
8
FB
I
Error amplifier inverting input terminal.
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1.2. IC506 (VHiMM3151XQ-1Q)
1.2.1 Block Diagram
LC-46X8E/S/RU
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1.2.2 Pin Connections and short description
Pin No.
Pin Name
I/O
Pin Function
69
C1
I
Chroma signal input
75
C2
I
1
C3
I
7
C4
I
70
S1
I
The terminal which detects the connection state of S-connector.
76
S2
I
2
S3
I
65
V1
I
Composite signal input.
71
V2
I
77
V3
I
3
V4
I
9
V5
I
15
V6
I
68
S2-1
I
The terminal which detects the aspect ratio information of S-connector.
74
S2-2
I
80
S2-3/ FS3
I
The terminal which detects the aspect ratio information of S-connector, or which detects the
voltage of FS pin of a scart connector.
voltage of FS pin of a scart connector.
67
Y1
I
Luminance signal input.
73
Y2
I
79
Y3
I
5
Y4
I
14
ADR
I
Slave address select pin.
16
BIAS
I
BIAS
32
L13
I
The terminal which detects the number of scanning lines information on D-connector.
20
L11/ FS1
I
The terminal which detects the number of scanning lines information on D-connector, or
which detects the voltage of FS pin of a scart connector.
which detects the voltage of FS pin of a scart connector.
26
L12/ FS2
I
21
CY1
I
Component Y-signal input.
27
CY2
I
33
CY3
I
22
L21
I
The terminal which detects the I/P information of D-connector.
28
L22
I
34
L23
I
24
L31
I
The terminal which detects the aspect ratio information of D-connector.
30
L32
I
36
L33
I
23
PB1
I
Colour difference PB-signal input.
29
PB2
I
35
PB3
I
25
PR1
I
Colour difference PR-signal input.
31
PR2
I
37
PR3
I
38
SW1
I
The terminal which detects the connection state of D-connector.
40
SW2
I
42
SW3
I
45
SDA
I/O
Data I/O of I2C bus
46
SCL
I
Clock input of I2C bus
49
DCOUT
O
DC output for S-terminal.
51
VOUT3
O
Monitor output (composite signal)
50
COUT3/ VOUT6
O
Monitor output (Chroma or composite signal)
52
YOUT3/ VOUT5
O
Monitor output (Luminance or composite signal)
54
PROUT2
O
Colour difference PR-signal output.
58
PROUT1
O
55
PBOUT2/COUT2
O
Colour difference PB-signal or chroma signal output.
59
PBOUT1/ COUT1
O
56
CYOUT2/ YOUT2/ VOUT2
O
Colour difference signal, Luminance signal or composite signal output.
60
CYOUT1/ YOUT1/ VOUT1
O
64
O1
O
Output port.
66
O2
O
72
O3
O
78
O4
O
53, 57
VDD1
—
Power supply (+9V)
8, 47
VDD2
—
Power supply (+5V)
18, 44, 62
GND
—
Ground
LC-46X8E/S/RU
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1.3. IC1402 (VHiR2S15502-1Y)
1.3.1 Block Diagram
1.3.2 Pin Connections and short description
4, 6, 10, 11,
12, 13, 17,
19, 39, 41,
43, 48, 61, 63
12, 13, 17,
19, 39, 41,
43, 48, 61, 63
NC
—
Unconnected pins.
Pin No.
Pin Name
I/O
Pin Function
1
AVSS
—
0V Power Supply for Analog Core
2
AVDD
—
3.3V Power Supply for Analog Core
3
SIF
I
Sound IF Input
4
VREF1
—
ADC Voltage Reference 1
5
VREF2
—
ADC Voltage Reference 2
6
TEST
I
Test pin
7
XI
I
Crystal Oscillator Input
8
XO
O
Crystal Oscillator Output
9
IVDD
—
3.3V Power Supply for I/O Buffer
10
IVSS
—
0V Power Supply for I/O Buffer
11
DVSS
—
0V Power Supply for Logic Core
12
DVDD
—
1.5V Power Supply for Logic Core
13
DACCLK
I/O
DAC Clock
14
BCK
I/O
Bit Clock
15
LRCK
I/O
LR Clock
16
SD0
O
Digital Output for External DAC
17
SDI
I
Digital Input for Internal DAC
18
SDA
I/O
I2C bus Serial Data
19
SCL
I
I2C bus Serial Clock
20
STATUS
I/O
PLL Setting / Status Signal
21
RESET
I
Hardware Reset (Active low)
22
ROUT
O
Rch Analog Output
23
VCOM
—
DAC Voltage Reference
24
LOUT
O
Lch Analog Output
Pin No.
Pin Name
I/O
Pin Function
