Oki OKIOFFICE84 Maintenance Manual page 262

(3) NCU board
UNC5 ------- For US and Canada
WN5 --------- For Denmark, Norway, Sweden, Finland, The Netherlands, ireland,
portugal,New Zealand, Australia, Belgium, Spain, Greece and Other countries
DN5 ---------- For Germany, Switzerland and Austria
FN5 ---------- For France and UK
• Conversion of receive data and receive signals to internal signal level
• Conversion of send data and send signals to external signal level
• Generation of dial pulses to telephone line
• Detection of ringing signal
• Detection of busy tone (conjunction with Modem unit)
• Detection of hook up signal
• Interface with telephone handset (option)
• Output of send data and send signals to telephone line
• Input of receive data and receive signals from telephone line
(4) Power supply unit: MPW1446 (230V)/MPW1546 (120V), P6L, P2H
• Conversion of main alternating current to the following direct currents:
+5V DC power supply
-8V DC power supply
+24 V DC power supply
+30 V DC power supply
• Supplying of main alternating current to fuser unit
• Generation of medium voltages +300V, -300V, +400V, -450V and 0V
• Generation of high voltages -1.35 kV, -0.75 kV and +3.5 kV
A1 - 5
GENERAL
40672201TH Rev. 4