E-4
TROUBLESHOOTING GUIDE
NO
NO
NO
A color doesn't adhere to it
Whether is wave form of
IC604 47th pin normal or
not?
YES
YES
YES
Investigate X604.
Whether is wave form of
IC604 54th pin normal or
not?
Investigate IC604.
IC604 17th pin, 18th pin,
and whether is wave form
of 19th pin normal or not?
Investigate IC604.
Investigate Q810, Q811, Q812
and a peripheral circuit.
