E-2
TROUBLESHOOTING GUIDE
YES
(in case that there is a normal tension for time to do
stanby CD810 every terminal)
( 2 ) that a power supply doesn't
enter
Investigate D1006 and D1011.
Is the voltage of IC1001
85th pin 5V or not?
YES
NO
NO
YES
NO
YES
NO
YES
NO
YES
NO
NO
YES
Investigate D1015 and Q1023.
Is there 12MHz OSC for
IC1001 38th pin and 39th
pin or not?
Investigate X1001.
Is there 100V in the
emitter of Q503?
Is there horizontal out
for Q405 base or not?
Is the 5V for IC604
6th pin or not?
Investigate Q1006 and Q1019.
Investigate IC604.
Is there a heater
voltage or not?
Investigate Q406, R449 and
R450.
Investigate CRT.
Investigate TV Power H.
Investigate Q503 with Q501.
Is the voltage 5V for
IC1001 99th pin or not?
