40055101TH Rev.4
433 /
(4)
5V output circuit
The 5V output is supplied by rectification and smoothing of the output of transformer T1 by
means of diode D8, capacitor C16, choke coil L3 and capacitor C17. Variable resistor VR1 is used
for adjusting the output voltage level.
(5)
–8V and 24V output regulator circuits
The -8V output is stabilized by regulator IC2 after rectification and smoothing of transformer T1
output by diode D10 and capacitor C19.
The 24V output is stabilized by Q4, ZD3 and ZD6 after rectification and smoothing of transformer
T1 output by diode D9 and capacitor C22.
(6)
Standby power supply circuit (series power supply system)
Since this power supply is provided for saving of power consumption in the standby state, it is
active until the MPON signal rises to the high level. The AC output dropped by low-frequency
transformer T2 is rectified and smoothed by D11 to D14 and C26, which is then stabilized by
regulator IC3 to supply 5 V(S).
When the MPON is set to high, TRC2 is turned ON to activate the switching circuit.
(7)
Heater control circuit
The ACON control signal on the secondary side is transmitted to the primary side via PC3 to turn
triac TRC1 ON for AC voltage supply to the heater.
Summary of Contents for B4100
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Page 158: ...40055101TH Rev 4 158 Appearance of the OKIOFFICE44 OKIFAX 4100 FX048 CP4 1 Fig 01...
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Page 545: ...40055101TH Rev 4 545 54 SECTION 1 CABINET ASSEMBLY FAX NIP FX048...
Page 548: ...40055101TH Rev 4 548 SECTION 2 UNIT PRINTER...
Page 550: ...40055101TH Rev 4 550 SECTION 3 UNIT 048 OPE PANEL...
Page 552: ...40055101TH Rev 4 552 SECTION 4 OPEPANEL OPERATION PANEL ASSEMBLY...
Page 554: ...40055101TH Rev 4 554 SECTION 5 FRAME ASSEMBLY SCANNER L...
Page 556: ...40055101TH Rev 4 556 SECTION 6 PLATE ASSEMBLY SCANNER B...
Page 558: ...40055101TH Rev 4 558 SECTION 7 PLATE ASSEMBLY SCANNER R...
Page 560: ...40055101TH Rev 4 560 17 16 15 10 SECTION 8 FRAME ASSEMBLY SCANNER U...
Page 562: ...40055101TH Rev 4 562 13 SECTION 9 COVER ASSEMBLY TOP...
Page 564: ...40055101TH Rev 4 564 SECTION 10 PLATE ASSEMBLY BASE...
Page 569: ...40055101TH Rev 4 569 SECTION 12 PRINTER HEAT ASSY...
Page 571: ...40055101TH Rev 4 571 SECTION 13 CABLES...
Page 574: ...40055101TH Rev 4 574 SECTION 1 CABINET ASSEMBLY...
Page 576: ...40055101TH Rev 4 576 SECTION 2 CONTROL PANEL ASSEMBLY OKIFAX 5200 5300...
Page 577: ...40055101TH Rev 4 577 SECTION 2 CONTROL PANEL ASSEMBLY OKIFAX 5500 5600...
Page 579: ...40055101TH Rev 4 579 SECTION 3 PRINTER ASSEMBLY...
Page 582: ...40055101TH Rev 4 582 SECTION 4 BASE ASSEMBLY 30 37 38...
Page 585: ...40055101TH Rev 4 585 SECTION 5 SCAN UNIT...
Page 587: ...40055101TH Rev 4 587 SECTION 6 PAPER GUIDE U ASSEMBLY...
Page 589: ...40055101TH Rev 4 589 SECTION 7 CABLES 10...
Page 591: ...40055101TH Rev 4 591 SECTION 8 OPTION TELEPHONE US...
Page 594: ...40055101TH Rev 4 594 SECTION 8 OPTION TELEPHONE UK ITA NOR DEN BEL...
Page 597: ...40055101TH Rev 4 597 SECTION 8 OPTION TELEPHONE HOL GER FRA SWITZ AUT INT L...