Advertisement
4. Troubleshooting
No power
W hen P in 2,3,4 of C N601 is 0V,
D oes proper D C 12V appear at
P in 1 of C N600 separately?
Y E S
W hen P in 2 of IC 604 is DC
12V,
D oes proper DC 5V appear at
P in 3 of IC 604?
W hen P in 4 of IC 601 is DC 5V,
D oes proper DC 3.3V appear at
P in 5 of IC 601?
Y E S
W hen P in 4 of IC 602 is D C 5V,
Does proper DC 1.8V appear at
P in 5 of IC 602?
Y E S
R eplace M ain board.
C heck connection of Function Ass'y
NO
C hange another adapter or check power cord
have already connected to AC power or not.
NO
C heck IC 604 and related circuit.
NO
C heck IC 601 and related circuit.
NO
C heck IC 602 and related circuit.
Advertisement
