TROUBLESHOOTING GUIDE
E-2
THE PICTURE DOES NOT
APPEAR (1).
NO
YES
CONNECT CD3807.
NO
YES
IS CD3807 CONNECTED ?
DOSE BACK LIGHT SHINE ?
YES
NO
CHANGE V2301.
IS THERE SIGNAL
AT IC7201 ?
CHANGE IC7201.
IS THERE SIGNAL
AT CP7203 ?
NO
YES
CHECK IC801.
OR CHANGE SCALER PCB.
CHECK IC3801, T3801 AND
PERIPHERAL CIRCUIT.
NO
YES
IS THERE VOLTAGE AT
PINS 1, 2, 3, 4 AND 5
OF CP3807 24V ?