Caple C702G Servisní příručka stáhnout pdf (Strana 113)

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9. RASTER CENTERING CIRCUIT FAILURE

Make certain that the image position is adjusted when the horizontal

centering control(VR581) on the DEF PWB (PWE-624) is used.

The voltage of CN-CR pin1-2 on the DEF PWB (PWE-624)

should be approx. 5.5V.

Q581 or C581 may have failed.

Q581, C581 or VR581 on the DEF PWB (PWE-624), C6K1, C6K2 or

D6K1 on the SW/HV PWB (PWE-571) may have failed.

Adjust the raster centering again.

10. RASTER ROTATION ERROR

Check the voltage at IC4J1 pin 10 (+14.5V) and pin 5 (-15.6V) on the DEF

PWB (PWE-624).

Check the voltage at CN-DSA pin 7.

Measure the voltage at IC532 pin 15 on the DEF PWB (PWE-624).

Normally, the voltage varies from approx. 0V to 5V.

Check the raster control operation

Check the raster control

operation voltage.

Check +15 / -15V line

･Check SW REG circuit. (see item 13)

Check +5V line

･LC76K on the VIDEO PWB (PWE-567A) failure.

･CN-ASO,CN-DSA failure.

Check if Z-DY voltage varies by

OSM rotate control

Digital control circuit failure (see item 12)

IC4J1,Q4K1and Q4K2 on the DEF PWB (PWE-624)

or its ambient circuit failure.

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Caple C702G Servisní příručka Strana 113