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Board Descriptions
A - 59
OKIOFFICE 44 Serv. Man., P/N 59276801
A3.12 CTR (PC Interface Unit) Circuit Diagram
CTR board is used as an interface board of PC and FAX when PC is connected to facsimile machine.
1.
Block diagram
CTR board circuit is formed by Receiver, Driver, and 1284-I/F.
Figure A3.12.1 shows related signals of CTR board.
1284-I/F
Receiver
Driver
Host PC
CN2
CN3
CN1
RD-N, WRL-N
PSBN
VEROP
ACK-N
CASL-N,
FLT-N
SELP
AFXN
BSYP
IPRN
AD8 to AD15
IC2
CTR (option)
R44/17
CPU
IOGA
AD0 to AD7
BRE0I
SLIN
PD0 to PD7
BACKI
CLK
BRE0O
BACKO
Figure A3.12.1 Related Signals of P050 (PC interface unit)
Summary of Contents for OKIOFFICE 44
Page 2: ...All specifications are subject to change without notice Service Manual OKIOFFICE 44 59276801...
Page 135: ...Disassembly 4 6 OKIOFFICE 44 Service Manual P N 59276801 Whole Unit Picture FX048 CP4 1 Fig 01...
Page 329: ...Illustrated Parts List D 6 OKIOFFICE 44 Service Manual P N 59276801 Section 2 Printer Unit...
Page 331: ...Illustrated Parts List D 8 OKIOFFICE 44 Service Manual P N 59276801 Section 3 Operator Panel...
Page 351: ...Illustrated Parts List D 28 OKIOFFICE 44 Service Manual P N 59276801 Section 12 Cables...
Page 357: ...Board Layout E 2 OKIOFFICE 44 Service Manual P N 59276801 MEM eps E 2 MEM PCB...
Page 358: ...Board Layout E 3 OKIOFFICE 44 Service Manual P N 59276801 TEL U eps E 3 TEL U PCB...
Page 359: ...Board Layout E 4 OKIOFFICE 44 Service Manual P N 59276801 Hook eps E 4 Hook PCB...
Page 388: ...OKIOFFICE 44 Service Manual Part Number 59276801 Printed in the USA...