
Laser Control System
Overview
The Laser Scanner system is to form a static latent image on the photosensitive drum based on the video signal sent from the
Main Controller.
The Laser Scanner Unit is composed of the laser driver, the Scanner Motor Unit and other components, which are controlled
based on signals input by the DC Controller.
The figure below shows the Laser Scanner Unit schematically.
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㻹㼍㼕㼚㻌㻯㼛㼚㼠㼞㼛㼘㼘㼑㼞
Controls
■ Failure detection
1. Scanner Motor failures
• The rotation does not reach the pre-defined value after a certain time elapsed from the Scanner Motor actuated.
• The rotation failed to meet the tolerable range consecutively within a certain time during the Scanner Motor in drive.
Error Code: E110-0000
2. BD failures
• When out-of-range BD cycle is detected during printing.
2. Technical Explanation
29
Содержание MF720 Series
Страница 1: ...Revision 2 0 MF720 Series Service Manual...
Страница 12: ...Product Overview 1 Product Lineups 5 Product Features 7 Specifications 8 Name of Parts 14...
Страница 33: ...How to release Jam Remove the jammed paper and open close the ADF upper cover 2 Technical Explanation 25...
Страница 79: ...4 Click Import Export Import 1 2 2 Technical Explanation 71...
Страница 101: ...Periodical Service 3 Periodically Replaced Parts 94 Durable Parts 95 Periodical Services 96 Cleaning 97...
Страница 102: ...Periodically Replaced Parts No periodically replaced parts is set for this product 3 Periodical Service 94...
Страница 103: ...Durable Parts No durable parts is set for this product 3 Periodical Service 95...
Страница 104: ...Periodical Services No periodical service is set for this product 3 Periodical Service 96...
Страница 232: ...Adjustment 5 Overview 225 Adjustment at Parts Replacement 226...
Страница 248: ...Troubleshooting 6 Test Print 241 Trouble shooting items 243 Version Upgrade 244 Debug Log 248...
Страница 258: ...Error Jam Alarm 7 Outline 251 Error Codes 252 Jam Code 257...
Страница 267: ...Service Mode 8 Overview 260 COPIER 264 FEEDER 300 FAX 302 TESTMODE 308...
Страница 322: ...APPENDICES Service Tools 315 General Circuit Diagram 316 Print Sequence 317 Backup Data 318...