Service manual

E-1
TROUBLESHOOTING GUIDE
(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 T501.
NO
NO
NO
NO
YES
YES
YES
YES
Whether is POWER
FAIL normal?
Investigate Q508 and Q509.
AT 13V is it normal?
Investigate D508.
Investigate T501 and power
fail circuit
Investigate IC501 and feed
back circuit
AT12V is it normal?
AT125V is it normal?
Investigate D510,D503
and F502.
Investigate unreg 8V line.
(TV SECTION)