XV-C2E (serv.man4). Service manual part three - Sharp Projector Service Manual (repair manual). Page 8

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XV-C2E
31
2) Terminals
Terminal No.
Symbol
Remarks
1
RGB MBRT
4
R MBRT
5
B MBRT
7
GAM OUT
8
V
CC
1
9
RIN
10
GIN
11
BIN
12
GND
13
SID OUT
14
V
CC
2
15
R OUT
16
G OUT
17
B OUT
18
V
CC
3
22
GND
23
RGB SBRT
24
B SBRT
25
R SBRT
26
B CLP
27
G CLP
28
R CLP
29
SID CLP
Main brightness control terminal
common for RGB signals.
It is internally preset at 3.3V.
Main brightness control terminal R
signal.
It is internally preset at 3.3V.
Main brightness control terminal B
signal.
It is internally preset at 3.3V.
G signal output terminal where the
reference signal is inserted and the
main brightness and gamma are
mixed.
5V power supply terminal.
R signal input signal.
Input 0.7Vp-p signal.
G signal input signal.
Input 0.7Vp-p signal.
B signal input signal.
Input 0.7Vp-p signal.
GND terminal.
SID signal output terminal.
13V power supply terminal.
R signal output terminal.
G signal output terminal.
B signal output terminal.
5V power supply terminal.
GND terminal.
Supply control terminal common for
RGB signals.
Supply control terminal for B signal.
It is internally preset at 3.3V.
Supply control terminal for R signal.
It is internally preset at 3.3V.
B output detection signal input
terminal.
G output detection signal input
terminal.
R output detection signal input
terminal.
SID output detection signal input
terminal.
Use an external capacitor for
average value detection which has
a smaller absolute value and less
fluctuation.
SID output amplitude control
terminal.
It is internally preset at 3.3V.
Level control terminal for RGB
signals to be inserted in SID signal.
FRP input terminal.
The polarity of RGB output is
reversed by this pulse.  When it is
set at LOW, the polarity is reversed
and when it is set at HIGH, the
polarity is not reversed.
Input level
HIGH  
>
4V
LOW   
<
1V
FRP input terminal for SID output
The polarity of SID output is
reversed by this pulse.  When it is
set at LOW, the polarity is reversed
and when it is set at HIGH, the
polarity is not reversed.
Input level
HIGH  
>
4V
LOW   
<
1V
GND terminal
PRG pulse input terminal.
The PRG signal is inserted in SID
output by this pulse.
Input level
HIGH  
>
4V
LOW   
<
1V
VCOM voltage control terminal.
The variable range of VCOM
voltage covers -0.8V~1.3V to signal
center voltage.
RGB and SID center voltage
control terminal.
VCOM voltage output terminal.
Limiter control terminal to limit the
RGB signal output amplitude.
It is internally preset at 3.3V.
Terminal to control the center of
RGB signal output limiter.
It is internally preset at 3.3V.  When
it is preset, the limiter center
becomes equal to RGB center.
RGB signal white peak limiter
control terminal.
It is internally preset at 3.3V.
Gamma circuit control terminal.
When it is set at HIGH, the gamma
circuit becomes effective and when
it is set at LOW, the gamma circuit
becomes ineffective.
Input level
HIGH  
>
4V
LOW   
<
1V
30
SID CTR
31
PRG CTR
32
FRP
33
SID FRP
34
GND
35
PRG
36
VCOM CTR
37
SIG CENT
CTR
38
VCOM OUT
39
BLK LIM
40
BLK CENT
41
WHT LIM
42
GAM SEL
Terminal No.
Symbol
Remarks
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