Oki B4100 User Manual Page 367

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40055101TH Rev.4 367 /
(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: 048-POW (120V/230V), TLHV/OLHV board for OKIOFFICE44/OKIFAX
4100 and 1VP (120V)/2VP (230V), SUB-POW board for OKIFAX 5000 series
Conversion of main alternating current to the following direct currents:
+5V DC power supply
+8V DC/-8V DC power supply (+8V for OKIFAX 5000 series)
+30V 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
(5) MEM (memory) board (Option)
P-SRAM (for OKIFAX 4100)/DRAM (for OKIFAX 5000 series)
Memory storage for ECM operations, memory broadcast, delayed broadcast, etc.
(6) CTR board (Option)
Driver circuits
(7) NTIF board (Option)
Ringer circuit
(8) 10KY board (Option)
10-key pad
(9) HOOK board (Option)
Hook switch circuit
(10) TELU board (Option): For US and Canada
Speech network circuit
Basic speech functions included.
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