- 21 –
ViewSonic Corporation
Confidential - Do Not Cop
VA1721wmb
7
OVPT
Over-voltage/ over-current protection threshold setting pin
8 NC
No
connection
9 NC
No
connection
10
ENA
ON/OFF control of IC
11 LCT
Timing capacitor to set internal PWM dimming frequency and also a
pin for analog dimming selection
12
SSECMP Capacitor for soft start time and loop compensation
13
CT
Timing resistor and capacitor for operation and striking frequency
14
GNDA
Ground for analog signals
15 DRV2 Drive
output
16
PGND
Ground for power paths
Содержание VA1721wmb - 17" LCD Monitor
Страница 22: ...22 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Block Diagram...
Страница 36: ...36 ViewSonic Corporation Confidential Do Not Cop VA1721wmb...
Страница 37: ...37 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Sep2 Inpute the S N and execute Enter...
Страница 38: ...38 ViewSonic Corporation Confidential Do Not Cop VA1721wmb...
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...
Страница 60: ...60 ViewSonic Corporation Confidential Do Not Cop VA1721wmb Picture 19...
Страница 61: ...61 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 10 Block Diagram...
Страница 70: ...70 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 12 PCB Layout Diagram 12 1 MAIN BOARD PCB TOP VIEW...
Страница 71: ...71 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 12 2 MAIN BOARD PCB BUTTON VIEW...
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...
Страница 74: ...74 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 12 5 KEY BOARD TOP VIEW 12 6 KEY BOARD BUTTON VIEW...
Страница 75: ...75 ViewSonic Corporation Confidential Do Not Cop VA1721wmb 12 7 POWER PCB TOP BUTTON VIEW Q...