40055101TH Rev.4
392 /
1.
Block diagram
The circuit diagram shown on page 8/12 consists of the following connectors:
•
Connector CN10 that provides an interface between R44 board and NCU board.
•
Connector CN3 that provides an interface between R44 board and external electro-mechanical
conponents (PC1 and PC2).
•
Connector CN4 that provides an interface between R44 board and OPE (O4W) unit.
Figure A3.1.8 shows an interface between R44 board and NCU board.
Figure A3.1.9 shows an interface between R44 board and OPE unit.
Figure A3.1.10 shows the related signals of PC1 and PC2.
2.
Function
1)
External status supervising interface (PC1/PC2)
External status is detected by the photocouplers (PC1/PC2) in the mechanism and the
signal is output to the input port of CPU via this interface circuit.
•
PC1: Presence of document on hopper.
When sub-power supply is applied to the fax machine, this signal is output to
OPE unit which will control the main-power supply.
•
PC2: Presense of document at scanning position.
3.
Others
NCU interface signal
•
CML
: Line seizure control signal
•
DP
: Dial pulse control signal
•
SR
: Control signal for connection between LINE and TEL terminals
•
MUTE
: Control signal for pulse dial improvement and bell shunt relay
•
PP
: Relay control signal for special service code detection at parallel pickup or
remote reception
•
PBXE
: Control signal for connecting one of LINE terminal to the PBXE terminal
•
OH2-N
: Detection of off-hook of terminal connected to TEL-1 or TEL-2
•
OH1-N
: Output upon circuit current detection after fax line seizure
•
RP
: Receiving sensitivity determination terminal
•
RI
: Ringing detection signal
•
S
: Send signal (picture data/protocol/tonal signals/PB tone etc.)
•
R
: Received signal (picture data/protocol/tonal signals etc.)
OPE interface signals
•
TXDOPE
: This signal transmits sequencially the contents of each data of TXD (LED
on/off information, etc.) to OPE in serial data from CPU.
•
RXDOPE
: This signal transmits sequencially the contents of each data of RXD (key
code information, etc.) to CPU in serial data from OPE.
•
OPECHK
: Use to monitor the operation of the OPE unit.
•
OPERST
: Reset signal for OPE unit
•
WAKEUP-N
: Wakeup signal
A3.1.9
R44 Circuit Diagram (Page 9/12)
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 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...
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