Trouble Shooting - Acer AT1921 Service Manual

TROUBLE SHOOTING

This chapter provides trouble shooting information for AT1921/22
Check P/B CN101 pin7 12V,
pin15V Correct?
yes
Check M/B L56 3.3V L58 1.8V
correct?
No
Change M/B
NO POWER
No
Separate M/B & P/B Check CN101
No picture, No backlight
Check Power/B CN101
Pin9 3.3V correct?
No
Change
power board
No
Check LCD panel
pin7 12V, pin15V Correct?
yes
Change M/B
Yes
Chapter 4
No
Change P/B
Change
power board