TROUBLESHOOTING GUIDE
(TV SECTION)
Does RY501 work ?
Is the voltage at pin 3
of IC502 DC5.2V ?
When turning on the
power switch, does the
LED light ?
Does the Base voltage
of Q504 turn ON or OFF ?
POWER DOES NOT TURN ON (1)
Yes
No
Check P.CON 5V line.
Is the voltage at pin 1
of IC503 DC14.0V ?
Yes
No
Check ICP503 and D519.
No
Yes
Check ICP502.
Yes
No
No
Yes
Check F502, Q503 and the
peripheral circuit.
Check Q504, RY501 and the
peripheral circuit.
Check pin 28 of IC1001 and the
peripheral circuit.
E-1