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ViewSonic Corporation
Confidential - Do Not Copy
VA1930wm-1
2
4
6.6 CN102 (DVI Connector)
Pin
Symbol
Pin
Symbol
Pin
Symbol
1 T.M.D.S.Data2-
9 T.M.D.S.Data1- 17
T.M.D.S.Data0-
2 T.M.D.S.Data2+
10 T.M.D.S.Data1+ 18
T.M.D.S.Data0+
3
T.M.D.S.Data2/4
Shield
11
T.M.D.S.Data1/3
Shield
19 T.M.D.S.Data0/5
Shield
4 T.M.D.S.Data4-
12 T.M.D.S.Data3- 20
T.M.D.S.Data5-
5 T.M.D.S.Data4+
13 T.M.D.S.Data3+ 21
T.M.D.S.Data5+
6 DDC
Clock
14
+5V Power
22 T.M.D.S.clock Shield
7 DDC
Data
15 Ground(for+5V) 23
T.M.D.S.Clock+
8
No Connect
16
Hot Plug Ddtect
24 T.M.D.S.Clock-
7. Key Parts Pin Assignment
7.1 IC802 (TOP245Y or TOP246Y, Power Control IC)
Pin
Symbol
I/O
Description
1 C I
Control
2 L I
Line
Sense
3
X
I
External Current Limit
4
S
O
Source of MOSFET(GND)
5 F I
Frequency
6
D
I
Drain of MOSFET
7.2 IC501 (OZ9938GN, CCFL inverter controller IC)
Pin No.
Symbol
I/O
Description
1 DRV1 O
Drive
output
2
VDDA
I
Supply voltage input
3
TIMER
I
Timing capacitor to set striking time and shut down delay time
4 DIM I
Analog dimming or Internal LPWM dimming or external PWM
pulse input for dimming function
5
ISEN
I
Current sense feedback
6
VSEN
I
Voltage sense feedback
7
OVPT
I
Over-voltage/over-current protection threshold setting pin
8 NC
9 NC
10
ENC
I
ON/OFF control of IC
11 LCT I
Timing capacitor to set internal PWM dimming frequency and
also a pin for analog dimming selection
12
SSTCMP
I
Capacitor for soft start time and loop compensation
Содержание VA1930wm-1
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Страница 38: ...Disassembly Procedure Adjust Stand ViewSonic Corporation Confidential Do Not Copy VA1930wm 1 35...
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Страница 47: ...ViewSonic Corporation Confidential Do Not Copy VA1930wm 1 44 6 Black Screeqn and backlight turn on...
Страница 52: ...ViewSonic Corporation Confidential Do Not Copy VA1930wm 1 49 8 Exploded Diagram and Exploded Parts List...
Страница 55: ...ViewSonic Corporation Confidential Do Not Copy VA1930wm 1 52 9 Block Diagram...
Страница 63: ...ViewSonic Corporation Confidential Do Not Copy VG1930wm 1 60 11 PCB Layout Diagrams...
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