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Board Descriptions
A - 49
OKIOFFICE 44 Serv. Man., P/N 59276801
5-7
Photosensors
The photosensors mounted on this circuit board/sensor board supervise the paper running state
during printing. These four photosensors are used in this printer as listed below. All of their
outputs enter IOGA for referring to and processing by the CPU.
1)
PS1 (photosensor 1): TNRSNS
Detects the lack of the toner.
2)
PS2 (photosensor 2): PSIN
Detects the leading part of the paper and gives the supervision timing for switching from
hopping operation to feeding operation. Supervises the paper running state and the paper
size according to the paper arrival time and running time.
3)
PS3 (photosensor 3): PSOUT
Supervises the paper feed according to the time of arrival at the sensor and the time of
passage of paper.
4)
PS4 (photosensor 4): WRSNS
Detects the leading part of sensor.
Supervises the paper running state.
5-8
Cover open circuit
The cover open circuit consists of CVSW. When the Cover-Main is opened, the cover open
microswitch (CVSW) on the OLHV/TLHV board is turned off to cut the supply of H5V to the
high-voltage power supply circuit. As a result all high-voltage outputs are interrupted. At the
same time, the CVOPN-N signal is sent to the control board to notify it the off state of the
microswitch, and the control board performs the cover open processing.
Содержание OKIOFFICE 44
Страница 2: ...All specifications are subject to change without notice Service Manual OKIOFFICE 44 59276801...
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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 165: ...Cleaning and Maintenance 6 2 OKIOFFICE 44 Serv Man P N 59276801 This page was intentionally left blank...
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Страница 245: ...Board Descriptions A 2 OKIOFFICE 44 Service Manual P N 59276801 This page was intentionally left blank...
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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...