19" LCD Color Monitor
Lenovo L1900P
36
8.2.2 Power/Inverter Board
1.) No power
Check bridge rectified circuit and F901 circuit
Check R904, R932, R933 and Check IC901
2) Check IC901 over current protect circuit
Check CN902 pin4, 5 = 12V
Check AC line volt 110V or 220V
Check start voltage for the pin8 of IC901
Check the auxiliary voltage is bigger than
Check Q901, ZD921, ZD922, D915, D916, IC903 and IC904
OK
Check IC901
NG
NG
NG
OK
Содержание ThinkVision L1900p
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Страница 27: ...19 LCD Color Monitor Lenovo L1900P 27 h t t p w w w w j e l n e t ...
Страница 28: ...19 LCD Color Monitor Lenovo L1900P 28 7 2 Power Board 715G2664 1 2 h t t p w w w w j e l n e t ...
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