Board Descriptions
A - 36
OKIOFFICE 44 Serv. Man., P/N 59276801
A3.1.11 R44 Circuit Diagram
1.
Block diagram
The circuit diagram consists of the following connectors:
•
Connector CN13 that provides an interface between R44 board and optional memory
board.
•
Connector CN11 and CN12 that provides an interface between R44 board and optional CTR
board.
Figure A3.1.13 shows the interface between R44 and memory board.
Figure A3.1.14 shows the interface between R44 and CTR (PC interface unit) board.
Note 1: A 1 Mbyte (MEM-2) memory board can be added to the memory capacity for
OKIOFFICE 44.
RAM1
RAM2
P-SRAM
AD0 to AD7
AD0 to AD7
A0 to A18
A0 to A18
RD-N
PSREAD-N
PCS1-N to PCS4-N
WRL-N
RD-N
PSREAD-N
PCS1-N to PCS4-N
WRL-N
5 V
0 V
5 V
0 V
CPU
IOGA
MEM/MEM-2 (option)
R44
CN
CN13
A11
A19
A20, A21
B19, B20
B12
A13, B13
A5, B5, A18,
B18
IC2
Figure A3.1.13 Interface between R44 Board and Memory Board (option)
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...