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Board Descriptions
A - 6
OKIOFFICE 44
Service Manual, P/N 59276801
A1.2
Function of Each Unit
The section describes the principal functions of the individual units of the OKIOFFICE44 electrical
sections.
Figure A1.2.1 shows the pertinent block diagram.
Main Control (R44) Board
•
CPU
Basic processor
Scanning control
Picture processing control
Printing control
SIO (Serial input/output) control
•
IOGA (Input/output gate array)
Scanning control
Printing control
Peripheral input/output control
•
Flash memory (Instead of EP-ROM and SRAM)
Memory storage for work area.
•
DRAM
Memory storage for ECM operations, memory broadcast, delayed broadcast, etc.
•
Back-up battery circuit
•
Real-time clock IC
•
Audio monitor circuit
•
Contact image sensor control
•
I EXSEED (For OKIFAX 5000 series)
Image data processing
•
SRAM (For OKIFAX 5000 series)
Memory storage for image picture data
•
Supervision of the following external statuses:
Presence of document on hopper
Presence of document at scanning position
•
Send motor control
•
Fan motor control
•
Drum motor control
•
Resist motor control
•
Modem chip/Modem board (For OKIFAX 5500/5600)
Modulation and demodulation for V.34 (for OKIFAX 5500/5600)
Modulation and demodulation for V.33 and V.17
Modulation and demodulation for V.29 and V.27 ter
Modulation and demodulation for V.21
Generation of single-frequency signals for tonal signals
Detection of single-frequency tonal signals
Generation of dual time multiple-frequency signals for tone dialing
Operation Panel Unit: O4W Board
•
Supervision of switches on operation panel
•
Control of LEDs on operation panel
•
Control of LCD on operation panel
LED : Light-emitting diode
LCD : Liquid crystal display
Содержание OKIOFFICE 44
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Страница 37: ...General Information 1 24 OKIOFFICE 44 Service Manual P N 59276801 This page was intentionally left blank...
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Страница 121: ...Installation Procedure 2 72 OKIOFFICE 44 Service Manual P N 59276801 This page was intentionally left blank...
Страница 125: ...Brief Technical Description 3 4 OKIOFFICE 44 Service Manual P N 59276801 This page was intentionally left blank...
Страница 135: ...Disassembly 4 6 OKIOFFICE 44 Service Manual P N 59276801 Whole Unit Picture FX048 CP4 1 Fig 01...
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Страница 323: ...Circuit Diagrams C 2 OKIOFFICE 44 Service Manual P N 59276801 This page was intentionally left blank...
Страница 325: ...Illustrated Parts List D 2 OKIOFFICE 44 Service Manual P N 59276801 54 Section 1 Cabinet Assembly 1 2...
Страница 327: ...Illustrated Parts List D 4 OKIOFFICE 44 Service Manual P N 59276801 54 Section 1 Cabinet Assembly 2 2...
Страница 329: ...Illustrated Parts List D 6 OKIOFFICE 44 Service Manual P N 59276801 Section 2 Printer Unit...
Страница 331: ...Illustrated Parts List D 8 OKIOFFICE 44 Service Manual P N 59276801 Section 3 Operator Panel...
Страница 333: ...Illustrated Parts List D 10 OKIOFFICE 44 Service Manual P N 59276801 Section 4 Operator Panel Assembly...
Страница 335: ...Illustrated Parts List D 12 OKIOFFICE 44 Service Manual P N 59276801 Section 5 Frame Assembly Scanner L...
Страница 337: ...Illustrated Parts List D 14 OKIOFFICE 44 Service Manual P N 59276801 Section 6 Plate Assembly Scanner B...
Страница 339: ...Illustrated Parts List D 16 OKIOFFICE 44 Service Manual P N 59276801 Section 7 Plate Assembly Scanner R...
Страница 341: ...Illustrated Parts List D 18 OKIOFFICE 44 Service Manual P N 59276801 Section 8 Frame Assembly Scanner U...
Страница 343: ...Illustrated Parts List D 20 OKIOFFICE 44 Service Manual P N 59276801 Section 9 Cover Assembly Top...
Страница 345: ...Illustrated Parts List D 22 OKIOFFICE 44 Service Manual P N 59276801 Section 10 Plate Assembly Base...
Страница 351: ...Illustrated Parts List D 28 OKIOFFICE 44 Service Manual P N 59276801 Section 12 Cables...
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Страница 357: ...Board Layout E 2 OKIOFFICE 44 Service Manual P N 59276801 MEM eps E 2 MEM PCB...
Страница 358: ...Board Layout E 3 OKIOFFICE 44 Service Manual P N 59276801 TEL U eps E 3 TEL U PCB...
Страница 359: ...Board Layout E 4 OKIOFFICE 44 Service Manual P N 59276801 Hook eps E 4 Hook PCB...
Страница 361: ...Second Paper Feeder F 2 OKIOFFICE 44 Service Manual P N 59276801 This page was intentionally left blank...
Страница 381: ...RMCS System G 20 OKIOFFICE 44 Service Manual P N 59276801 This page was intentionally left blank...
Страница 383: ...Product Service Bulletins H 2 OKIOFFICE 44 Service Manual P N 59276801 This page was intentionally left blank...
Страница 385: ...Product Service Bulletins H 4 OKIOFFICE 44 Service Manual P N 59276801 This page was intentionally left blank...
Страница 387: ...Recommended Spare Parts List I 2 OKIOFFICE 44 Service Manual P N 59276801 This page was intentionally left blank...
Страница 388: ...OKIOFFICE 44 Service Manual Part Number 59276801 Printed in the USA...