50
VCT 3834 PIN ASSIGN
1
Key 1
I/O ( I )
LV
Key Matrix 1 input. Ñ> Not used (connected 3.3V)
2
System Sel
I/O ( I )
LV
Key Matrix 2 input. Ñ> 0V:NTSC(3.58), 5V:PAL(4.43)
3
ST-BY 5V
SUPPLY
X
Stand By 5V Vcc (Vcc for Port1 DRIVE)Port1 : #1,2,5,6,7,8,9,10
4
GND
SUPPLY
X
GND of Port 1
5
PWR L
I/O ( O )
LV
Power ON Active L
6
Picture On
I/O ( O )
LV
When the picture set the High in the menu
7
OCP
I/O
LV
OCP INPUT PORT. H : ACTIVE
8
IR INPUT
I/O
LV
Remocon key input.
9
Power On
I/O ( O )
LV
Monitor Power On -> H
10
Audio Mute
I/O ( I )
LV
Audio ON -> H (connect 4.7K to 5V)
11
Mon. Out
OUT
LV
Analog Video Output. Ñ> Not usedEmitter follower is needed.
12
VRT
IN
X
Reference Voltage Top. The Reference voltage for ADC is decoupled through this pin.10uF/47nF is
connected.
13
GND/SIGNAL
SUPPLY
GND AF
Signal GND for Analog Input
14
GND AF
SUPPLY
X
Ground, Analog Front -End
15
ON/OFF 5V
SUPPLY
X
Supply Voltage, Analog Front -End
16
Cb in
IN
VRT
Analog Chroma Component Input. Ñ> Not usedThe input signal must be AC-coupled.
17
Cin 1
IN
VRT
Analog Chroma Input. Ñ> Not usedThe input signal must be AC-coupled.It is not used.
18
Cin 1 / Cr in
IN
VRT
Analog Chroma Component Input. Ñ> Not usedThe input signal must be AC-coupled.
19
Vin 1
IN
VRT
Analog Video Input. Ñ> Not used
20
Vin 2
IN
VRT
Analog Video Input. Video Input mode fix.CVBS signal (internal) input from MUX IC.
21
Vin 3
IN
VRT
Analog Video Input. Ñ> Not used
22
Vin 4
IN
VRT
Analog Video Input. Ñ> Not used
23
TEST
IN
GNDs
It enables factory test modes. Normal operation, it must be connected to GND.
24
H. OUT
OUT
X
H. pulse output.Open Drain Output
25
ON/OFF 3.3V
SUPPLY
X
Digital Vcc 3.3V
26
GNDD
SUPPLY
X
Digital GND
27
Fast BLK in
IN
GNDAB
Fast Blank Input.Active level is set up by software.
28
R in
IN
GNDAB
Analog Red Input Ñ> Not used
29
G in
IN
GNDAB
Analog Green Input Ñ> Not used
30
B in
IN
GNDAB
Analog Blue Input Ñ> Not used
31
VPROT
IN
GNDD
Vertical Protect Input.The RGB does not output if the Negative edge is detected.
32
SAFETY
IN
GNDD
Safety Input. 3 state input. Ñ> Not usedLow : Normal.Midium : RGB output -> blank.High : RGB output
-> blank , H.out -> shut off.
33
HFLB
IN
H OUT
Horizontal Flyback Input.
34
VERTQ
OUT
LV
Inverted Vertical Sawtooth Output. Interlace Output.The Analog voltage is made from the External
resistance and the 4-bit Cuttent DAC.One side,this pin give an interlaced information and is determined
by prog.
35
VERT
OUT
LV
Vertical Sawtooth Output. Interlace Output.The Analog voltage is made from the External resistance
and the 4-bit Cuttent DAC
36
EW
OUT
LV
Vertical Parabola Output.The Analog voltage is made from the External resistance and the 4-bit Cuttent
DAC
37
SENSE
IN
GNDAB
38
GNDM
SUPPLY
X
Measurement ADC reference input.
NC = Not Connected, LV = if not used Leave Vacant, X = Obligatory : connect as described in circuit diagram
PinNo.
Pin Name
Type
Connect(if not used)
Descriptions
Содержание DQ-K2121N-P
Страница 22: ...21 CIRCUIT OPERATION X RAY PROTECTION CIRCUIT DQ K2121N P...
Страница 23: ...22 CIRCUIT INFORMATION 1 CONNECTION DIAGRAM DQ K2121N D P...
Страница 24: ...23 CIRCUIT INFORMATION 2 POWER SCHEMATIC DIAGRAM DQ K2121N D P...
Страница 25: ...24 CIRCUIT INFORMATION 3 RECODER A V SCHEMATIC DIAGRAM DQ K2121N D P...
Страница 26: ...25 CIRCUIT INFORMATION 4 SERVO SYSCON SCHEMATIC DIAGRAM DQ K2121N D P...
Страница 27: ...26 CIRCUIT INFORMATION 5 FBT CRT SCHEMATIC DIAGRAM DQ K2121N D P...
Страница 28: ...27 CIRCUIT INFORMATION 6 LOGIC SCHEMATIC DIAGRAM DQ K2121N D P...
Страница 29: ...28 CIRCUIT INFORMATION 7 JACK AUDIO SW SCHEMATIC DIAGRAM DQ K2121N D P...
Страница 30: ...29 CIRCUIT INFORMATION 8 MULTIPLEXER SCHEMATIC DIAGRAM DQ K2121N D P...
Страница 31: ...30 CIRCUIT INFORMATION 9 MONITOR A V SCHEMATIC DIAGRAM DQ K2121N D P...
Страница 55: ...54 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW...
Страница 56: ...55 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW...
Страница 57: ...56 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW...
Страница 58: ...57 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW...
Страница 59: ...58 DISASSEMBLY...
Страница 78: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp...
