Caple C702G Manual de servicio descargar pdf (Pagina 118)

7-30

13. SWITCHING REGULATOR CIRCUIT FAILURE

Check the output voltages

1. Make sure that the voltage of between K 1 pin

and 3 pin (GND) is approx. 230V.

6. Make sure that the voltage of between CR 1 pin

and 2 pin (floating GND) is approx. 5.5V.

5. Make sure that the voltage of between K 4 pin

and 3 pin (GND) is approx. -15.6V.

4. Make sure that the voltage of between P 6 pin

and 5 pin (GND) is approx. 8.5V.

3. Make sure that the voltage of between K 2 pin

and 3 pin (GND) is approx. +14.5V.

2. Make sure that the voltage of between P 3 pin

and 5 pin (GND) is approx. 80.2V.

Check other circuits

1. Turn off the power switch and wait 1 minute.

2. Disconnect CN-K & P & PM & CR & PS from SW/HV PWB(PWE-571).

Disconnect CN-D from SW/HV PWB(PWE-571).

3. Short Q673 emitter and Q673 corrector on the SW/HV PWB(PWE-571)

4. Add dummy resistor (2.2KΩ,±10%,40W) in parallel with R6A1.

5. Add dummy resistor (82Ω,±10%,2W) in parallel with C6G2.

6. Turn on the power switch and check the output voltages again.

CONTINUE

Failed

Passed

7. Make sure that the voltage of between D 1 pin

and 2 pin (GND) is approx. 20.0V.

8. Make sure that the voltage of between D 3 pin

and 2 pin (GND) is approx. -20.0V.

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Caple C702G Manual de servicio Pagina 118