Boards
D255/D256 FAX OPTION
150
SM
SAF Memory Back-up
A rechargeable battery backs up the SAF memory (DRAM) for 12 hours.
ROM
4 MB flash ROMs for system software storage
SRAM
The 512 KB SRAM for system and user parameter storage is backed up by a lithium battery.
SRAM Back-up
A lithium battery backs up the system parameters and programmed items in the SRAM, in case
the base copier's main power switch is turned off.
Switches
Item
Description
SW1
Switches the SRAM backup battery on/off.
CPU
This controls the energy-efficient operation of the FCU board.
Summary of Contents for M281 Series
Page 1: ...D255 D256 M281 M282 SERVICE MANUAL ...
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Page 21: ...PRODUCT INFORMATION REVISION HISTORY Page Date Added Updated New None ...
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Page 189: ...PREVENTIVE MAINTENANCE REVISION HISTORY Page Date Added Updated New None ...
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Page 278: ...Laser Unit MP 501 601 D255 D256 M281 M282 4 84 SM 6 Remove the laser unit A ...
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Page 442: ...Self Diagnostic Mode D255 D256 M281 M282 6 4 SM ...
Page 563: ...DETAILED DESCRIPTIONS REVISION HISTORY Page Date Added Updated New None ...
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Page 585: ...Fusing Unit SM 7 21 D255 D256 M281 M282 Detailed Descriptions ...
Page 587: ...Paper Exit Unit SM 7 23 D255 D256 M281 M282 Detailed Descriptions ...
Page 590: ...Paper Feed Unit D255 D256 M281 M282 7 26 SM ...
Page 593: ...ARDF MP 501 601 Only SM 7 29 D255 D256 M281 M282 Detailed Descriptions ...
Page 595: ...ARDF MP 501 601 Only SM 7 31 D255 D256 M281 M282 Detailed Descriptions ...
Page 599: ...D255 D256 M281 M282 SERVICE MANUAL APPENDICES ...
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Page 605: ...APPENDIX SPECIFICATIONS REVISION HISTORY Page Date Added Updated New None ...
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Page 633: ...PREVENTIVE MAINTENANCE TABLES REVISION HISTORY Page Date Added Updated New None ...
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Page 807: ...SOFTWARE CONFIGURATION REVISION HISTORY Page Date Added Updated New None ...
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