Ricoh FW780 Service Manual - Page 158
Separation Current Adjustment
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4.8.3 Separation Current Adjustment ADJUSTMENT STANDARD: ac 250 ± 10 µA (Normal Paper) ac 350 ± 10 µA (Film and leading edge of translucent paper) dc --20 ± 2.5 µA 1. Connect the multimeter as shown above. 2. Set the multimeter range at ac 2 mA. 3. Plug in the machine and turn on the main switch. 4. Access SP mode and select No. --14. 5. Press the key to turn on the separation corona. 6. Check the multimeter. Press the key and then change the current using and ± 10 µA. keys so that the ac separation current is ac 250 7. If the voltage is within that of the standard voltage, press the key. 8. Select SP mode No. --15 9. Press the key to turn on the separation corona. 10. Check the multimeter. Press the key and then change the current using and ± 10 µA. keys so that the ac separation current is ac 350 11. If the voltage is within that of the standard voltage, press the key. A163 5-24 SM