Samsung SCX-4x24 Series Manual de Serviço descarregar pdf (Página 17)

Alignment & Troubleshooting

Service Manual

4-17

Samsung Electronics

4.1.5.4 Machine Test

SWITCH TEST

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each time you press a key.

MODEM TEST

Use this feature to hear various transmission signals to the telephone line from the modem and to check the

modem. If no transmission signal sound is heard, it means the modem part of the main board malfunctioned.

DRAM TEST

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ROM TEST

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PATTERN TEST

Using this pattern printout, you can check if the printer mechanism is functioning properly.

It is needed in the production progress. Service person doesn’t need to use it.

SHADING TEST

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Device). If the copy image quality is poor, perform this function to check the condition CCD unit.

< Method >

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2. Push the SET UP button then an image will be

scanned.

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print out.

4. If the printed image is different to the image, the

CCD is defect.

NOTICE : When you test CCD, make sure that the

cover is closed.

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