Service Call 490-491
D255/D256/M281/M282
6-22
SM
SC No.
Type
Error Name/Error Condition/Major Cause/Solution
SC491-02
D
Drum Unit Error
No response from the device in reading/writing for 5 ms or
more and this problem is repeated 5 times consecutively.
The reading data of 2 locations do not match 8 times
consecutively.
The writing data and reading date do not match 8 times
consecutively.
Drum PCB defective
Connect-Left PCB defective
IOB defective
Drum PCB defective
1. Reconnect the following connectors.
Drum PCB – Drum Connection PCB connector
Drum Connection PCB – Connect-Left PCB
connector
Connect-Left PCB – IOB connector
2. If the connector is broken, shorted, or grounded,
replace the connector.
3. Replace the drum unit.
Connect-Left PCB defective
Replace the Connect-Left PCB.
IOB defective
1. Update the engine software to the latest version.
2. Replace the IOB.
Summary of Contents for M281 Series
Page 1: ...D255 D256 M281 M282 SERVICE MANUAL ...
Page 16: ......
Page 20: ......
Page 21: ...PRODUCT INFORMATION REVISION HISTORY Page Date Added Updated New None ...
Page 22: ......
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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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