OPE
40838301TH Rev.1
A3 - 23
A3.2
OPE (05W) Circuit Diagram
1.
Block diagram
Figure A3.2.1 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 OKIFAX 5400
Page 7: ...40838301TH Rev 1 CHAPTER 1 GENERAL INFORMATION...
Page 46: ...40838301TH Rev 1 CHAPTER 2 INSTALLATION PROCEDURE...
Page 130: ...40838301TH Rev 1 CHAPTER 3 BRIEF TECHNICAL DESCRIPTION...
Page 138: ...40838301TH Rev 1 CHAPTER 4 MECHANICAL DISASSEMBLY AND REASSEMBLY...
Page 157: ...40838301TH Rev 1 CHAPTER 5 ADJUSTMENTS...
Page 162: ...40838301TH Rev 1 CHAPTER 6 CLEANING AND MAINTENANCE...
Page 189: ...40838301TH Rev 1 CHAPTER 7 TROUBLESHOOTING AND REPAIR FOR OKIFAX 5400...
Page 240: ...40838301TH Rev 1 CHAPTER 8 DIPSWITCHS SETTING TABLES...
Page 380: ...40838301TH Rev 1 D 2 SECTION 1 CABINET ASSEMBLY 5...
Page 382: ...40838301TH Rev 1 D 4 SECTION 2 CONTROL PANEL ASSEMBLY...
Page 384: ...40838301TH Rev 1 D 6 SECTION 3 PRINTER ASSEMBLY 51...
Page 387: ...40838301TH Rev 1 D 9 SECTION 4 BASE ASSEMBLY 30 37 36 39 40 5...
Page 390: ...40838301TH Rev 1 D 12 SECTION 5 SCAN UNIT...
Page 392: ...40838301TH Rev 1 D 14 SECTION 6 PAPER GUIDE U ASSEMBLY...
Page 394: ...40838301TH Rev 1 D 16 SECTION 7 CABLES 10 11 19 12 20 21...
Page 396: ...40838301TH Rev 1 D 18 SECTION 8 OPTION TELEPHONE US...
Page 399: ...40838301TH Rev 1 D 21 SECTION 8 OPTION TELEPHONE UK ITA NOR DEN BEL...
Page 402: ...40838301TH Rev 1 D 24 SECTION 8 OPTION TELEPHONE HOL GER FRA SWITZ AUT INT L...