Oki B4100 User Manual
Page 367
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
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Conversion of receive data and receive signals to internal signal level
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Conversion of send data and send signals to external signal level
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Generation of dial pulses to telephone line
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Detection of ringing signal
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Detection of busy tone (conjunction with Modem unit)
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Detection of hook up signal
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Interface with telephone handset (option)
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Output of send data and send signals to telephone line
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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
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Supplying of main alternating current to fuser unit
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Generation of medium voltages +300V, -300V, +400V, -450V and 0V
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Generation of high voltages -1.35 kV, -0.75 kV and +3.5 kV
(5)
MEM (memory) board (Option)
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P-SRAM (for OKIFAX 4100)/DRAM (for OKIFAX 5000 series)
Memory storage for ECM operations, memory broadcast, delayed broadcast, etc.
(6)
CTR board (Option)
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Driver circuits
(7)
NTIF board (Option)
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Ringer circuit
(8)
10KY board (Option)
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10-key pad
(9)
HOOK board (Option)
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Hook switch circuit
(10)
TELU board (Option): For US and Canada
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Speech network circuit
Basic speech functions included.