40055101TH Rev.4
427 /
A3.4
OPE (05W) Circuit Diagram for OKIFAX 5000 Series
1.
Block diagram
Figure A3.4.1 shows a block diagram of OPE (05W).
The O5WH (operation unit) circuit consists of the following blocks:
1)
IC1 (one chip MOS-CPU)
•
Output ports
Setting LEDs on and off: 8 ports
Specifies the row during key switch matrix scanning: 8 ports
•
Input ports
Detect the column whose key is pressed: 8 ports
2)
Key switch matrix (8 rows x 8 columns)
3)
LEDs (8 LEDs)
4)
LCD unit
2.
Key switch scanning
Output ports (KSCAN0 to KSCAN7 signal) corresponding to 8 rows of key matrix are scanned
sequentially by the software. In the case 1 is any of output from KSCAN0 to KSCAN7 signal
which corresponds to the row 8 in the block diagram, the software reads input port, KSENS0 to
KSENS7, and determines which in the row 8 is pressed.
3.
LED drives and LEDs
Eight LEDs (ALARM, PHOTO, LIGHT, etc.) on the control panel are driven by output of IC1 via
resistors R1, R4-9 and R11 respectively. An LED lights on when a port output is 1.
4.
In case sub-power supply is applied to the fax machine: when PC1-N, HUP-N or RIINT signal is
input to OPE unit, OPE unit controls the main power supply (120/230 board) by outputting the
MP/OFF (ACON) signal.
•
PC1-N:
Presence of document on hopper
•
HUP-N:
OFF-Hook detection for TEL 1 and TEL 2 terminal
•
RIINT:
Ringing detection signal
Summary of Contents for B4100
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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...
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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...
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Page 591: ...40055101TH Rev 4 591 SECTION 8 OPTION TELEPHONE US...
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