Caple C702G Manuale di Servizio Scaricare il pdf (Pagina 106)

7-18

CONTINUE1 CONTINUE2

OK NG

Check the voltage at the CNPU (pin3 and pin4)on the VIDEO PWB.

Confirm that the voltage varies at each direction of the monitor and

its variable range should be between +1.5volt and +3.5volt.

/IC4J1,IC4L1,Q4J1,Q4J2 Q4N1,Q4N2

Q4R1 Q4R2,Q4L1, Q4L2, Q4M1,Q4M2

OK NG failure

/or its associated circuit failure

/IC4H1 failure

/IC4H3 failure or its associated circuit failure

Check the voltage at the CNCL pin14 or TP-TMP on the VIDEO PWB.

Confirm the output voltage from approx. 100mV to 500mV

(ex:250mV at 25℃)

OK NG

/LC151 (on VIDEO PWB) failure

/IC151 (on CONTROL PWB) failure

/or its associated circuit failure

* When power switch on, Check the voltage of C4P1’s both ends increase

After a few seconds, the voltage continue to increase without saturation.

(See Graph 5-8-1)

* Be sure to use voltage meter which has input impedance more than 10MΩ

OK NG

CONTINUE1 CONTINUE2

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Caple C702G Manuale di Servizio Pagina 106