Sharp DV-L70S Service Manual page 42

DV-L70S
DV-L70BL
DV-L70W
9-19. IC1801 IR3Y29BM
Pin No. Terminal name
1 TRAP
2 CONTRAST
3 VIDEO IN
4 IDENT FILTER
5 C IN
6 COLOR
7 BURST OUT
8 KILLER FILTER
9 R-Y
10 B-Y
11 ACC FILTER
12 CHROMA OUT
13 TINT
14 VCO IN
15 APC FILTER
16 VCO OUT
17,18 GND1,2
20 R DC DET
22 G DC DET
25 B DC DET
19 R OUT
21 G OUT
24 B OUT
23 Vcc2
26 GAMMA 2
28 RGB AMPLITUDE
ADJUST
27 GAMMA 0
29 BRIGHT
30 SUB BRIGHT B
31 SUB BRIGHT R
32 COMMON FRP
33 FRP
34 SYNC IN
35 SYNC OUT
36 SYNC SEP
37 COMMON
AMPLITUDE
ADJUST
38 COMMON OUT
39 SW
40 B IN
41 G IN
42 R IN
43 Vcc
44 F ADJ
45 CLAMP
46 AGC FILTER
It is a trap connection terminal. Output impedance is 1kΩ.
Adjustment can be done the signal contrast from the video input (Y/C input).
It is the input terminal of the composite video signal (in the case of the Y/C input, Y signal).
It is a filter connection terminal for ident detection.
It is the input terminal of the chroma signal at the time of the y/c input.
It comes to deal with composite video input when this terminal is articulated in GND again.
It is a color adjustment terminal.
A burst cleaning coil is articulated at the time of the PAL preference.
It is the connection terminal of the filter for killer detection.
It is the input terminal of the color difference demodulation circuit.
It is the connection terminal of the filter for the ACC detection.
A collar is adjusted, and it is the output terminal of the chroma signal which went ahead of the burst.
It is a terminal for the hue adjustment.
The transfer switch of NTSC/PAL is included, and it comes to deal with PAL by articulating it in GND.
It is the input terminal of VCO.
It is the connection terminal of the filter for the APC detection.
It is the output terminal of VCO.
GND1, GND2 aren't articulated inside the integrated circuit.
Give me these terminals as the surely same electric potential.
It is the smoothing capacitor connection terminal of the feedback circuit for the RGB output DC level
control.
Employ the condenser which leakage is rare in for the high impedance.
It is the output terminal of the RGB primary colors signal.
It is a power source connection terminal for the RGB Hara output.
Adjustment can be done the point of the gamma 2.
This terminal is preset inside.
Adjustment can be done between black-black of the RGB output signal the swing and the dynamic range.
This terminal is preset inside.
Adjustment can be done the point of the gamma 0.
This terminal is preset inside.
A gamma compensation curve and the adjustment of the swing of common output can be done.
It interlocks with the gamma compensation curve, and R and the slight adjustment of bright of B can be done.
This terminal is preset inside.
It is the input terminal of the timing pulse for level switching of the COMMON output.
It is the input terminal of the timing pulse for the RGB output inversion.
It is inverted with L, and it becomes non-inverting with H.
It is the input terminal of low active horizontal synchronizing.
A flip-flop is inverted at the time of PAL at the start of this synchronizing signal.
High active, and the composite synchronizing signal isolated in the synchronous separation circuit is
outputted.
An output form is open collector.
It is a synchronous separation circuit input terminal.
The adjustment of the COMMON signal amplitude can be done.
This terminal is preset inside.
It is the output terminal of the COMMON signal.
It is a SW signal input terminal whether to display either RGB input or video input.
'H' Or, it is open, and video input (Y/C input) is chosen in the RGB input, 'L'.
It is the input terminal of the RGB signal.
Input a signal by the capacitive coupling.
It is a power source connection terminal.
The characteristics of the built-in filter can do adjustment by the value of the backlash articulated in this
terminal.18kΩ is recommended with both NTSC and PAL.
Give me articulated backlash as the resistance value tolerance ± 2%, temperature characteristic
±200ppm/°C.
It is the connection terminal of the capacity for the pedestal clamp of the luminance signal.
Employ the condenser which leakage is rare in for the high impedance.
It is the connection terminal of the filter for the automatic gain control detection of the luminance signal.
Operation function
42