Sharp LC-30HV4E (serv.man2) Service Manual ▷ View online
42
LC-30HV4E
Ë
VHiTB1274AF-1Q (ASSY:IC801, IC802)
VIDEO/CHROMA Processor
»
Block diagram
43
LC-30HV4E
»
Pin mapping
Pin No.
Pin Name
Type
Description
1
CVBS1/Y1-IN
I
CVBS1 or Y1-IN signal input
2
SYNC-IN
I
Synchronization signal input
3
CVBS-OUT
O
CVBS or Y+C signal output
4
VS
O
Output of counted-down vertical synchronization signal
5
COMB Y-IN
I
Input of Y signal outputted from comb filter. Open when not used
6
D-VDD
––
5 VDC power supply to DDS/BUS/V-CD/H-CD block (standard)
7
COMB C-IN
I
Input of C signal outputted from comb filter. Open when not used
8
D-GND
––
GND for DDS/BUS/V-CD/H-CD block
9
HS
O
Output of horizontal synchronization signal under AFC
10
SCP
O
Sand castle pulse output.
Clamp pulse and horizontal blanking pulse are outputted.
Clamp pulse and horizontal blanking pulse are outputted.
11
Yvi-IN
O
Output of synchronous input Y signal selected using video SW
12
SYNC-VCC
––
5VDC power supply to SYNC/HVCO block (standard)
13
SCL
I
12C bus SCL input
14
SDA
I/O
12C bus SDA output
15
YS3
I
Switch for selection between main signal and RGB1 input signal. This input is
(iRGB1-in)
operative only when RGB1-ENB is enabled during bus setting.
16
SYNC-GND
––
GND for SYCN/HVOC block
17
Cr1-IN
I
Y1/Cb/Cr1 signal input
18
Cb1-IN
I
19
Y1-IN
I
20
CLP-FIL
––
Used to connect Y clamp filter
21
Y-OUT
O
Y/Cb/Cr signal output
22
Cb-OUT
O
23
Cr-OUT
O
24
YS1
I
Switch for selection between main signal and input signal
(YVbC2-IN)
25
B1-IN
I
RGB1 signal input. YS3 or 12C bus is used to select signal.
26
G1-IN
I
27
R1-IN
I
28
Y/C-GND
––
GND for Y/C/Text/Video-SW/1HDL block
29
Cr2-IN
I
Y2/Cb2/Cr2 signal input. YS1 is used to select signal.
30
Cb2-IN
I
Open when the pin is not used.
31
Y2-IN
I
32
Y/C-VCC
––
5VDC Power supply to Y/C/Text/Video-SW/1HDI block. (standard)
33
B2-IN
I
RGB2 signal input. YS is used to select signal.
34
G2-IN
I
Open when not used.
35
R2-IN
I
36
YS2/YM
I
Switch for selection between main signal and RGB2 input signal
(RGB2-IN)
37
FIL.
––
Connected to Y/C-VCC pin
38
X'TAL
––
Connect to 16.2 MHz crystal oscillator
39
C3-IN
I
Chroma signal input. Open when not used.
40
APC-FIL
––
Connected to chroma modulation filter
41
CVBS3/Y3-IN
I
CVBS33 or Y3 signal input. Open when not used.
42
ADDRESS
I
Slave address input
43
C2-IN
I
Chroma signal input. Open when not used.
44
CVBS2/Y2-IN
I
CVBS2 or Y2 signal input. Open when not used.
45
COMB SYS
O
Current color system discrimination result output. Pin 46 is also used for this output.
46
Fsc-OUT
O
Sub carrier output
47
AFC-FIL
––
Connected to AFC detection filter
48
C1-IN
I
Chroma signal input. Open when not used.
44
LC-30HV4E
Ë
VHiCXA2101Q-1 (ASSY:IC803)
Baseband image signal processing
»
Block diagram
45
LC-30HV4E
»
Pin mapping
Pin No.
Pin Name
Type
Description
1
IN2-H
I
IN2-H: Independent H periodic signal input
2
IN2-V
I
IN2-V: Independent V periodic signal input
3
IN2-1
I
IN2 system signal input
4
IN2-2
I
5
IN2-3
I
6
Vcc-MAT
––
Power supply to selector or synchronous processing modules
7
IN3-H
I
IN3-H: Independent H periodic signal input
8
IN3-V
I
IN3-V: Independent V periodic signal input
9
IN3-1
I
IN3 system signal input
10
IN3-2
I
11
IN3-3
I
12
GND-MAT
––
GND for selector or synchronous processing modules
13
IN4-H
I
IN4-H: Independent H periodic signal input
14
IN4-V
I
IN4-V: Independent V periodic signal input
15
IN4-1
I
IN4 system signal input
16
IN4-2
I
17
IN4-3
I
18
V-PH
Connected to capacitor for holding Vsync peak
19
IN5-H
I
IN5-H: Independent H periodic signal input
20
IN5-V
I
IN5-V: Independent V periodic signal input
21
IN5-1
I
IN5 system signal input
22
IN5-2
I
23
IN5-3
I
24
H-PH
Connected to capacitor for holding Hsync peak
25
YG-OUT
O
Output of composite video signal for synchronous separation
26
YG-IN
I
Input of composite video signal for synchronous separation
27
IREF-SYNC
Pin for reference current setting (approx. 4.6V)
28
VS-OUT
O
Output of HV of either IN1 system or IN2 ? IN5 system selector signals. Signal is
29
HS-OUT
O
selected by 12C bus "YCBCR/MAT".
30
Vcc-OUT
O
Power supply to RGB system
31
SCP-IN
I
Sand-castle-pulse input
32
VTIM-IN
I
V timing pulse input
33
HP-IN
I
H pulse input
34
GND-OUT
O
GND for RGB system
35
R-OUT
O
RGB signal output.
37
G-OUT
O
When 100IRE white is inputted, signal is outputted at 2.6Vp-p.
39
B-OUT
O
36
R-SH
RGB AKB sample & hold
38
G-SH
40
B-SH
41
IK-IN
I
Input of returned reference pulse
42
PABL-FIL
Peak ABL peak-hold
43
ABL-FIL
Creates LPF when ABL control signal is received.
44
ABL-IN
ABL control signal input
45
ABL-IN
YM1/YS1 control signal input.
Input level is judged on the three-value logic.
This pin enables VM to turn off when YM or YS reaches its specified value.
Input level is judged on the three-value logic.
This pin enables VM to turn off when YM or YS reaches its specified value.
46
LR1-IN
I
Analog RGB1 signal input
47
LG1-IN
I
48
LB1-IN
I
49
LB1-IN
I
YM2/YS2 control signal input.
Input level is judged on the three-value logic.
This pin enables VM to turn off when YM or YS reaches its specified value.
Input level is judged on the three-value logic.
This pin enables VM to turn off when YM or YS reaches its specified value.
50
LR2-IN
I
Analog RGB2 signal input
51
LG2-IN
I
52
LB2-IN
I
53
ADDRESS
I
12C bus slave address input
54
DPIC-C
I
Used to connect capacitor to GND pair for detection of dynamic picture
(black expansion)
(black expansion)
55
SCL
I
12C bus SCl (serial clock) input
56
SCL
I
12C bus SDA (serial data) input
57
DPIC-MUTE
I
Used to provide mute control to dynamic picture (black expansion)
58
CLP-C
Connected to Y system clamp capacitor
59
VM-OUT
O
VM output. Differential waveform of Y signal is outputted with positive polarity.
60
VM/SHP/COL-OFF
Used to turn off VM, sharpness and color. Input level is judged on the three-value logic.
61
YCBCR-SW
I
Input for switching signal inputted to INT/EXT SW. External input pin is selected when
this input is High.
this input is High.
62
ECR-IN
I
External Y/Cb/Cr signal input
63
ECB-IN
I
64
EY-IN
I
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