6. Trouble Shooting Flow Chart
6.1 No
power.
Check that CN251 pin1, are approximately 24V
Check that C281 are 24V
Failure point
1. Adaptor failure.
2. Disconnected between CN251 and Adaptor.
Check that C262 positive is at 5V.
Failure point
FB251, FB251 failure
Failure point
D251, IC251, L251, Q255 failure
Check:
1. IC255 is O/P 3.3V.
2. IC253 is O/P 1.8V.
3. IC256 is O/P 2.5V.
4. IC252 is O/P 3.3V.
Yes
Yes
Yes
No
No
No
Failure point
IC255, IC253, IC252, IC256
No
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VP231wb
33
Содержание VP231WB - 23" LCD Monitor
Страница 26: ...6 0 Click Gprobe 4 Gprobe ViewSonic Corporation Confidential Do Not Copy VP231wb 23 ...
Страница 28: ...8 0 Confirm connection setup ViewSonic Corporation Confidential Do Not Copy VP231wb 25 ...
Страница 29: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 26 ...
Страница 30: ...8 1 Open BATCH file in Gprobe 4 ViewSonic Corporation Confidential Do Not Copy VP231wb 27 ...
Страница 31: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 28 ...
Страница 32: ...9 0 Open VP231BATCH ViewSonic Corporation Confidential Do Not Copy VP231wb 29 ...
Страница 33: ...10 0 Key in BATCH VP231BATCH TXT ViewSonic Corporation Confidential Do Not Copy VP231wb 30 ...
Страница 55: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 8 2 Disassembly of Front Cover Module and LCD Panel 52 ...
Страница 56: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 8 3 Disassembly of Mechanical Back Cabinet 53 ...
Страница 57: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 8 4 Disassembly of Mechanical Stand 54 ...
Страница 58: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 55 ...
Страница 59: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 9 Block Diagram 56 ...
Страница 60: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 10 Schematic Diagrams 57 ...
Страница 61: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 58 ...
Страница 62: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 59 ...
Страница 63: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 60 ...
Страница 64: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 61 ...
Страница 65: ...ViewSonic Corporation Confidential Do Not Copy VP231wb 62 ...