ViewSonic VX500 Service Manual - Page 18

DDC2B

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CONB8 Inverter Connector Pin # 1 2 3 4 5 6 7 Signal Name VCC VCC GND GND PENBKL GND BR_CTRL Function +12 V power supply +12 V power supply GROUND GROUND Penal Backlight On/Off control GROUND Dimming (Brightness) Control CONB5: DC Power Connector Pin # 1 2 3 Signal Name VCC GND GND +12 V power supply GROUND GROUND Function CND1: DVI Connector Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Signal Name DATAZ DATA2+ DATA2/4 SHLD Reserved 4 Reserved 5 DDC-CLK DDC-DATA Reserved 8 DATA 1DATA 1+ DATA1/3 SHLD Reserved 12 Reserved 13 DVI VCC GND DVI DET DATA 0DATA 0+ DATA0/5 SHLD DATA 5DATA 5+ CLK SHLD CLK + CLK - Description TMDS negative differential input, channel 2 TMDS positive differential input, channel 2 Logic Ground Reserved. No connection Reserved. No connection DDC2B Clock DDC2B Data Reserved. No connection TMDS negative differential input, channel 1 TMDS positive differential input, channel 1 Logic Ground Reserved. No connection Reserved. No connection + 5.0 V Power Logic Ground SENSE Pin, Pull High TMDS negative differential input, channel 0 TMDS positive differential input, channel 0 Logic Ground Reserved. No connection Reserved. No connection Logic Ground TMDS positive differential input, reference clock TMDS negative differential input, reference clock Pin # 1 2 3 4 5 6 7 8 9 Signal Name RIN GIN BIN GND GND RRET GRET BRET DCCVCCC P6: D-SUB Red Video Green Video Blue Video Ground Ground Red Video Ground Green Video Ground Blue Video Ground DDCVCC Function ViewSonic Corporation 15 Confidential - Do Not Copy VX500-1

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CONB8
Inverter
Connector
Pin
#
Signal
Name
Function
1
VCC
+12
V
power
supply
2
VCC
+12
V
power
supply
3
GND
GROUND
4
GND
GROUND
5
PENBKL
Penal
Backlight
On/Off
control
6
GND
GROUND
7
BR_CTRL
Dimming
(Brightness)
Control
CONB5:
DC
Power
Connector
Pin
#
Signal
Name
Function
1
VCC
+12
V
power
supply
2
GND
GROUND
3
GND
GROUND
CND1:
DVI
Connector
Pin
No.
Signal
Name
Description
1
DATAZ
TMDS
negative
differential
input,
channel
2
2
DATA2
+
TMDS
positive
differential
input,
channel
2
3
DATA2/4
SHLD
Logic
Ground
4
Reserved
4
Reserved.
No
connection
5
Reserved
5
Reserved.
No
connection
6
DDC-CLK
DDC2B
Clock
7
DDC-DATA
DDC2B
Data
8
Reserved
8
Reserved.
No
connection
9
DATA
1
-
TMDS
negative
differential
input,
channel
1
10
DATA
1
+
TMDS
positive
differential
input,
channel
1
11
DATA1/3
SHLD
Logic
Ground
12
Reserved
12
Reserved.
No
connection
13
Reserved
13
Reserved.
No
connection
14
DVI
VCC
+
5.0
V
Power
15
GND
Logic
Ground
16
DVI
DET
SENSE
Pin,
Pull
High
17
DATA
0-
TMDS
negative
differential
input,
channel
0
18
DATA
0+
TMDS
positive
differential
input,
channel
0
19
DATA0/5
SHLD
Logic
Ground
20
DATA
5
-
Reserved.
No
connection
21
DATA
5
+
Reserved.
No
connection
22
CLK
SHLD
Logic
Ground
23
CLK
+
TMDS
positive
differential
input,
reference
clock
24
CLK
-
TMDS
negative
differential
input,
reference
clock
P6:
D
-SUB
Pin
#
Signal
Name
Function
1
RIN
Red
Video
2
GIN
Green
Video
3
BIN
Blue
Video
4
GND
Ground
5
GND
Ground
6
RRET
Red
Video
Ground
7
GRET
Green
Video
Ground
8
BRET
Blue
Video
Ground
9
DCCVCCC
DDCVCC
ViewSonic
Corporation
15
Confidential
—
Do
Not
Copy
VX500-1