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ViewSonic Corporation
Confidential - Do Not Cop
VA1721wmb
OZ9938GN(IC801):
The OZ9938 is high performance, cost-effective CCFL controller
designed for driving large-size LCD applications requiring 2 to 6 CCFLs.PWM
control, Has such functions as short-voltage protection, Over-voltage protection,
over-current protection and etc. The function of each pin and the circuit diagram
inside are as follows
:
PIN Descriptions:
Pin Names
Description
1 DRV1
Drive
output
2
VDDA
Supply voltage input
3
TIMER
Timing capacitor to set striking time and shutdown delay time
4 DIM
Analog dimming or Internal LPWM dimming or external PWM pulse
input for dimming function
5 ISEN
Current
sense
feedback
6
VSEN
Voltage sense feedback
Содержание VA1721wmb - 17" LCD Monitor
Страница 22: ...22 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Block Diagram...
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Страница 37: ...37 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Sep2 Inpute the S N and execute Enter...
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Страница 39: ...39 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Sep3 Key the Enter and write the data...
Страница 40: ...40 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Sep4 If ddc program OK and show data compare ok...
Страница 41: ...41 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 5 7 Packing Procedure...
Страница 42: ...42 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 6 Troubleshooting Flow Chart...
Страница 55: ...55 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 8 Exploded Diagram And Spare Parts List...
Страница 56: ...56 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Packing For Shipping...
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Страница 61: ...61 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 10 Block Diagram...
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Страница 72: ...72 ViewSonic Corporation Confidential Do Not Cop VG1721wm VA1721wm 12 3 POWER PCB TOP VIEW...
Страница 73: ...73 ViewSonic Corporation Confidential Do Not Cop VG1721wm VA1721wm 12 4 POWER PCB BUTTON VIEW...
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Страница 75: ...75 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 12 7 POWER PCB TOP BUTTON VIEW Q...