Lenovo LXM-L19BH
Page 30 of 44
4. U4-DATA OUTPUT
8.2.2 KEYPAD BOARD
NG
Measured X401 waveform is
normal?
Check GM2321 (U401)
Signal output.
Replace X401(14.318MHz)
OK
OK
Check relative circuit to
panel
OSD is unstable or not working
Is Keypad Board connecting normally?
Is Keypad Board Normally?
Replace Keypad Board
N
Y
Check Main Board
Содержание LXM-L19BH
Страница 12: ...Lenovo LXM L19BH Page 12 of 44 5 BLOCK DIAGRAM 5 1 SOFTWARE FLOW CHART h t t p w w w w j e l n e t ...
Страница 13: ...Lenovo LXM L19BH Page 13 of 44 h t t p w w w w j e l n e t ...
Страница 16: ...Lenovo LXM L19BH Page 16 of 44 Power Block Diagram h t t p w w w w j e l n e t ...
Страница 25: ...Lenovo LXM L19BH Page 25 of 44 7 PCB LAYOUT 7 1 MAIN BOARD h t t p w w w w j e l n e t ...
Страница 26: ...Lenovo LXM L19BH Page 26 of 44 7 2 Power Inverter Board h t t p w w w w j e l n e t ...