ViewSonic PJ513D-1 Service Manual page 88

3. Power Trouble Shooting Guide
Power BD Check.
Fuse Broken ?
Yes
Proceed to "Primary
Circuit Check".
No DC-DC
Output.
B+=385VDC ?
Yes
TOPSwitch
Broken ?
Yes
Replace new
TOPSwitch
ViewSonic Corporation
Proceed to "check
No
DC-DC OUTPUT＂
Proceed to " Primary
No
Circuit Check"
Lacks of some
No componets around
TOPSitch ?
Yes
solder them.
85
No
Confidential - Do Not Copy
Check Trace.
PJ513D-1