41285901TH Rev.3
494 /
4.4
DN5 circuit diagram
1
Lightning arresters (AR1, 2)
The nominal operating voltage is 500 V.
When connecting the ground of the arrestor to the chassis, tighten ARG on the PCB with
a screw. At this time, the PCB is grounded through the power cable.
The TB1 arrestor ground terminal can also be used to connect to the earth directly.
2
Loop current detector (IC4) - Optional
When a line is hunt, this circuit detects a DC loop current to notify the fact.
For detection (OH1), it outputs the low level to the nominal input current of 10 mA or
more.
3
Diode bridge (DB1)
This circuit rectifies the loop current so that the DC circuit characteristics are not affected
by a polarity change over the line.
4
DC circuits (Q3, R540, R541, C13, R9, R209)
These circuits provide DC characteristics according to the line requirements.
5
Impedance matching network (R523, R536, C503, ...)
This circuit matches the impedance between the line and equipment to reduce reflection
of transmitted signals.
It provides impedance (return loss) characteristics to meet the line requirement using the
S4-3 and S4-4.
6
Receiving sensitivity (R537, R539, R637, R639)
The receiving sensitivity at line hunting is determined by R539 to R639 depending on the
line impedance. Similarly, the MF tone receiving sensitivity at parallel pickup is deter-
mined by R537 or R637.
The receiving sensitivity is set using the DIP switches S4-5 to S4-8.
7
CML (RL1)
This circuit selectively switches the line between the telephone or facsimile.
8
SR (RL2)
This circuit connects the line with the telephone. During facsimile transmission, it discon-
nects the telephone.
9
DP (IC5)
This circuit generates pulse dial signals.
0
MUTE (IC7)
During pulse dialing, this circuit closes to reduce the DC loop resistance.
A
PP (RL6)
If this circuits detects MF or CNG tones without seizuring a line, it disconnects NT (5) to
increase the input impedance and also sets the receiving sensitivity.
B
MUTE (RL3)
During pulse dialing, this circuit opens to prevent pulse distortion caused by capacitor
C11. If it detects MF or CNG tones without seizuring a line, it opens to increase the
impedance.
C
Pickup RC (R590, C31)
These circuits insert a high-impedance resistor and capacitor serially to prevent the line
impedance from dropping by the line transformer T1.
Содержание OKIFAX 5750
Страница 100: ...41285901TH Rev 3 100 NIC CONFIGURATION TYPE 2 09 22 2000 16 54 ID OKIDATA CORP E8S FAX MFP S W...
Страница 101: ...41285901TH Rev 3 101 1 6 21 NIC Information...
Страница 118: ...41285901TH Rev 3 118 3 Document stacker Hang the document stacker onto hanging position...
Страница 274: ...41285901TH Rev 3 274 Appearance of the OKIFAX 5750 5950...
Страница 528: ...41285901TH Rev 3 528...
Страница 529: ...41285901TH Rev 3 529...
Страница 530: ...41285901TH Rev 3 530...
Страница 531: ...41285901TH Rev 3 531...
Страница 532: ...41285901TH Rev 3 532...
Страница 533: ...41285901TH Rev 3 533...
Страница 534: ...41285901TH Rev 3 534...
Страница 535: ...41285901TH Rev 3 535...
Страница 536: ...41285901TH Rev 3 536...
Страница 537: ...41285901TH Rev 3 537...
Страница 538: ...41285901TH Rev 3 538...
Страница 539: ...41285901TH Rev 3 539...
Страница 540: ...41285901TH Rev 3 540...
Страница 541: ...41285901TH Rev 3 541...
Страница 542: ...41285901TH Rev 3 542...
Страница 543: ...41285901TH Rev 3 543...
Страница 544: ...41285901TH Rev 3 544...
Страница 545: ...41285901TH Rev 3 545...
Страница 546: ...41285901TH Rev 3 546...
Страница 547: ...41285901TH Rev 3 547...
Страница 571: ...41285901TH Rev 3 571...
Страница 572: ...41285901TH Rev 3 572...
Страница 573: ...41285901TH Rev 3 573...
Страница 578: ...41285901TH Rev 3 578...
Страница 579: ...41285901TH Rev 3 579...
Страница 582: ...41285901TH Rev 3 582...
Страница 584: ...41285901TH Rev 3 584...
Страница 586: ...41285901TH Rev 3 586...
Страница 590: ...41285901TH Rev 3 590...
Страница 591: ...41285901TH Rev 3 591...
Страница 592: ...41285901TH Rev 3 592...
Страница 593: ...41285901TH Rev 3 593...
Страница 594: ...41285901TH Rev 3 594...
Страница 595: ...41285901TH Rev 3 595...
Страница 596: ...41285901TH Rev 3 596...
Страница 601: ...41285901TH Rev 3 601...
Страница 603: ...41285901TH Rev 3 603 High Voltage Low Voltage High Voltage Low Voltage...
Страница 604: ...41285901TH Rev 3 604...
Страница 607: ...41285901TH Rev 3 607 High Voltage primary Low Voltage secondary...
Страница 611: ...41285901TH Rev 3 611 High Voltage primary Low Voltage secondary...
Страница 615: ...41285901TH Rev 3 615 Low Voltage secondary High Voltage primary...
Страница 669: ...41285901TH Rev 3 669 1 2 3 4 5 6 7 8 9 1 2 3 4 1 2 3 HS1 CN2 CN1 HOOK Circuit Diagram 3SS5003 6263...
Страница 674: ...41285901TH Rev 3 674...
Страница 675: ...41285901TH Rev 3 675...
Страница 676: ...41285901TH Rev 3 676...
Страница 677: ...41285901TH Rev 3 677...
Страница 678: ...41285901TH Rev 3 678...
Страница 679: ...41285901TH Rev 3 679...
Страница 680: ...41285901TH Rev 3 680...
Страница 686: ...41285901TH Rev 3 686...
Страница 688: ...41285901TH Rev 3 688 Appendix D MECHANICAL EXPANDED VIEW DRAWING AND PARTS LIST Section 1 CABINET ASSEMBLY...
Страница 690: ...41285901TH Rev 3 690 Section 2 CONTROL PANEL ASSEMBLY 11...
Страница 692: ...41285901TH Rev 3 692 Section 3 PRINTER ASSEMBLY...
Страница 695: ...41285901TH Rev 3 695 Section 4 BASE ASSEMBLY...
Страница 697: ...41285901TH Rev 3 697 Section 5 FRAME ASSEMBLY SCANNER L 31 30 33 32...
Страница 699: ...41285901TH Rev 3 699 Section 6 FRAME ASSEMBLY SCANNER U...
Страница 701: ...41285901TH Rev 3 701 Section 7 CABLES OPTION BOARDS 27...
Страница 702: ...41285901TH Rev 3 702 Section 7 CABLES OPTION BOARDS...
Страница 704: ...41285901TH Rev 3 704 Appendix E BOARD LAYOUT OKIFAX 5750 5950...
Страница 705: ...41285901TH Rev 3 705...
Страница 706: ...41285901TH Rev 3 706...
Страница 707: ...41285901TH Rev 3 707...
Страница 708: ...41285901TH Rev 3 708...
Страница 709: ...41285901TH Rev 3 709...
Страница 710: ...41285901TH Rev 3 710...
Страница 711: ...41285901TH Rev 3 711...
Страница 712: ...41285901TH Rev 3 712...
Страница 713: ...41285901TH Rev 3 713...
Страница 714: ...41285901TH Rev 3 714...
Страница 715: ...41285901TH Rev 3 715...
Страница 716: ...41285901TH Rev 3 716...
Страница 717: ...41285901TH Rev 3 717...
Страница 718: ...41285901TH Rev 3 718...
Страница 719: ...41285901TH Rev 3 719...
Страница 720: ...41285901TH Rev 3 720...
Страница 721: ...41285901TH Rev 3 721...
Страница 722: ...41285901TH Rev 3 722 OKIFAX5750 5950...
Страница 723: ...41285901TH Rev 3 723...
Страница 724: ...41285901TH Rev 3 724...
Страница 725: ...41285901TH Rev 3 725...
Страница 726: ...41285901TH Rev 3 726...
Страница 727: ...41285901TH Rev 3 727...
Страница 728: ...41285901TH Rev 3 728...
Страница 729: ...41285901TH Rev 3 729...
Страница 730: ...41285901TH Rev 3 730...
Страница 731: ...41285901TH Rev 3 731...
Страница 732: ...41285901TH Rev 3 732...
Страница 748: ...41285901TH Rev 3 748 5 2 PCB Layout TQSB 2PCB PU FG CONTROLLER MOTOR DRIVER SEN2 MOTOR OSC SEN1...
Страница 749: ...41285901TH Rev 3 749 Figure 6 1 6 PARTS LIST SECTION1 CABINET CASSETTE ASSEMBLY P 7 2 8 1 6 5 3 4 O...
Страница 750: ...41285901TH Rev 3 750 SECTION2 MECHANICAL ASSEMBLY Figure 6 2 9 A 0 C K B M L D N E F G H V T S U I J R Q A A B B...
Страница 777: ...41285901TH Rev 3 777 Fig 3 1 2 FLASH Memory Write Fig 3 1 1 FLASH Memory Read...
Страница 778: ...41285901TH Rev 3 778 Fig 3 1 3 DRAM Read Fig 3 1 4 DRAM Write...
Страница 780: ...41285901TH Rev 3 780 Fig 3 1 5...
Страница 782: ...41285901TH Rev 3 782 Fig 3 1 6 Fig 3 1 7...
Страница 791: ...41285901TH Rev 3 791 Fig 3 1 13 RTC Time Read Fig 3 1 14 RTC Time Set...
Страница 792: ...41285901TH Rev 3 792 Fig 3 1 15 RTC Time Read Fig 3 1 16 RTC Time Set...
Страница 795: ...41285901TH Rev 3 795 Fig 3 1 17 Fig 3 1 18...
Страница 803: ...41285901TH Rev 3 803 Fig 3 2 1...
Страница 818: ...41285901TH Rev 3 818 Fig 3 6 1 RA1 1 DRAM Fig 3 6 2 RA1 2 DRAM Write...
Страница 834: ...41285901TH Rev 3 834 Fig 3 7 1 Fig 3 7 2...
Страница 835: ...41285901TH Rev 3 835 Fgi 3 7 3 Fgi 3 7 4...
Страница 836: ...41285901TH Rev 3 836 Fig 3 7 5 Fig 3 7 6...
Страница 837: ...41285901TH Rev 3 837 Fig 3 7 8 Fig 3 7 7...
Страница 838: ...41285901TH Rev 3 838 Fig 3 7 9 Fig 3 7 10...
Страница 839: ...41285901TH Rev 3 839 Fig 3 7 11 Fig 3 7 12...
Страница 860: ...41285901TH Rev 3 860 Fig 3 9 1 Fig 3 9 2...
Страница 861: ...41285901TH Rev 3 861 Fgi 3 9 3 Fgi 3 9 4...
Страница 862: ...41285901TH Rev 3 862 Fgi 3 9 5 Fgi 3 9 6...