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IBM 15” Service Manual
37
2.)
W / LED , No Backlight
Check C201(+) =12V
NG
OK
Change F902 Check
D201/Q209/Q210
Check ON/OFF signal
Check the pin1 of U201 have sawtooth wave
Check D201(-) have the output of square wave at short time.
Check the resonant wave of pin2 & pin5 for PT201
Check the output of PT201
Check connecter & lamp
OK
NG
Change PT201
Summary of Contents for ThinkVision L150
Page 15: ...IBM 15 Service Manual 15 5 5 2 L150P Model h t t p w w w w j e l n e t ...
Page 16: ...IBM 15 Service Manual 16 h t t p w w w w j e l n e t ...
Page 17: ...IBM 15 Service Manual 17 h t t p w w w w j e l n e t ...
Page 22: ...IBM 15 Service Manual 22 Power Block Diagram h t t p w w w w j e l n e t ...
Page 28: ...IBM 15 Service Manual 28 7 PCB Layout 7 1 Main Board 715L1039 1 h t t p w w w w j e l n e t ...
Page 29: ...IBM 15 Service Manual 29 h t t p w w w w j e l n e t ...
Page 30: ...IBM 15 Service Manual 30 7 2 Inverter Power Board 715L1034 1 h t t p w w w w j e l n e t ...
Page 31: ...IBM 15 Service Manual 31 7 3 Keypad Board 715L1067 C h t t p w w w w j e l n e t ...