E-2
TROUBLESHOOTING GUIDE
YES
(In case that there is a normal tension for time to do
standby 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 D1014 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 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 ?
Is there horizontal out
for Q405 base or not ?
