Troubleshooting Flow Chart - ViewSonic VX2739wm-1 Service Manual

6. Troubleshooting Flow Chart

Can not boot
Abnormal screen
1.Test after boot，the screen left bottom has the streaks
2. Purple screen after booting
3. White screen appears after booting
ViewSonic Corporation
Can not boot
Check AC-power
whether is OK
OK
Disassembles the system
to remove the PSU, and
supplies the power directly
Replace the PSU
and Test
NG
Replacement MB and
NG
Replacement the
AC Power
Supply
Equipment
OK
The nondefective
CONFIDENTIAL – DO NOT COPY
67
VX2739wm-1
VX2739wm-CN