E-1
TROUBLESHOOTING GUIDE
(Television division)
(In case that there isn't a normal tension for time to do
stanby CD810 every terminal)
( 1 ) that a power supply doesn't
enter
Is there output on the
secondary of T501
dimensions or not?
NO
YES
Voltage of C507 is
it normal?
NO
YES
YES
NO
Investigate R501 and F501.
Whether there is output
for IC501 3rd pin or not?
Investigate IC506 and IC501.
Investigate T501.
NO
NO
NO
NO
NO
YES
YES
YES
YES
Whether is POWER
FAIL normal?
Investigate T502.
AT6V is it normal?
Investigate IC505.
NO
YES
Is there 100V in the
collector of Q503?
Investigate F502 and D510.
AT 12V is it normal?
Investigate IC504 and ICP503.
P.CON 9V is it normal?
Investigate IC503 and ICP503.
AT5.6V is it normal?
Investigate IC502.
