Service manual

86
ViewSonic Corporation Confidential - Do Not Copy PJ513D-1
Check primary
circuit.
Check BD601
damages ?
Check Q601
damages ?
Fuse Broken ?
Inside diodes of
BD601 are
shorted. Replace
new bridge diode.
PinD & PinS of
Q601 are shorted.
Replace new
MOSFET.
Proceed to "Check
IC601".
Proceed to "Check
IC601".
Yes
Yes
No
No
Yes
No
Check IC601.
Output Pin shorted to
GND ? (Pin8)
Check 15VPFC
Votage.
Replace with new
IC L6561D and
D611, D612, and
D613
Check Pin8 if
shorted to GND.
Yes
No