6 – 30
Chapter 6 Principles of Operation
6.2 ROS
Control
6.2.1 Rotation of Scanner Motor
The control (ON/OFF) of the rotation of the Scanner Motor is performed as shown below according
to the mode of operation.
The following table gives the resolution that differs according to the specifications of the machine,
and the corresponding rotational speeds of the Scanner Motor.
dpi (dot per inch)
rpm (revolutions per minute)
Each facet of the Polygon Mirror (12 facets) is scanned with a laser beam.
6.2.2 Warm-up of ROS
The Scanner Motor rotates simultaneously with the warm-up of the ROS. The SOS signal is
sampled at intervals of 100 ms. If the obtained value is shorter than the Ready reference value three
consecutive times, the warm-up of the ROS is ended (The Scanner Motor is rotating at a constant
speed).
6.2.3 ROS Reference Value
If the speed of the Scanner Motor increases by more than 1%, the laser beam does
not enter the SOS Sensor, and "U2" is detected in terms of Fail reference value.
Mode of operation
ON/OFF of rotation of Scanner Motor
Standby state
Kept OFF.
Printing state
Turned on by receiving signal from the Controller, and turned off after 10 s
since end of printing.
Power-saving state
Kept OFF.
Process
Speed
Resolu-
tion
RPM of
Scanner
CLK signal fre-
quency
269mm/s
600dpi 31,772rpm 3,177.2Hz
1200dpi
31,772rpm
3,177.2Hz
ROS reference value
Description
Ready reference value
SOS signal interval corresponding to less than 98% of the
specified rotational speed of the Scanner Motor
Fail reference value
SOS signal interval corresponding to less than 90% of the
specified rotational speed of the Scanner Motor
Summary of Contents for 9045N
Page 1: ...Laser Printer TallyGenicom 9045N Service Manual J20006AA ...
Page 16: ...xv Blank Page ...
Page 20: ...Chapter 1 Troubleshooting Chapter 1 Troubleshooting CONTENTS Blank Page ...
Page 88: ...1 68 Chapter 1 Troubleshooting Blank Page ...
Page 160: ...1 140 Chapter 1 Troubleshooting Blank Page ...
Page 162: ...1 142 Chapter 1 Troubleshooting Blank Page ...
Page 164: ...Chapter 2 Printer Diagnostics Chapter 2 Diagnostics CONTENTS 11 Print Summary 2 16 ...
Page 194: ...1 10 Chapter 3 Removal and Replacement Procedures RRPs RRP2 150 PAPER CASSETTE ...
Page 213: ...1 29 Chapter 3 Removal and Replacement Procedures RRPs RRP3 550 PAPER CASSETTE ...
Page 240: ...1 56 Chapter 3 Removal and Replacement Procedures RRPs RRP4 150 paper Feeder ...
Page 257: ...1 73 Chapter 3 Removal and Replacement Procedures RRPs RRP5 550 Paper Feeder ...
Page 277: ...1 93 Chapter 3 Removal and Replacement Procedures RRPs RRP6 Xerographics ...
Page 302: ...1 118 Chapter 3 Removal and Replacement Procedures RRPs RRP7 500 Paper Exit ...
Page 322: ...1 138 Chapter 3 Removal and Replacement Procedures RRPs RRP8 Frame Drive ...
Page 331: ...1 147 Chapter 3 Removal and Replacement Procedures RRPs RRP9 Electrical ...
Page 394: ...1 210 Chapter 3 Removal and Replacement Procedures RRPs ...
Page 454: ...1 270 Chapter 3 Removal and Replacement Procedures RRPs Blank Page ...
Page 459: ...4 3 Chapter 4 Plug Jack P J Connector Locations Blank Page ...
Page 465: ...4 9 Chapter 4 Plug Jack P J Connector Locations 3 2 OCT Option P J Diagram ...
Page 468: ...4 12 Chapter 4 Plug Jack P J Connector Locations Blank Page ...
Page 470: ...Chapter 5 Parts Lists Chapter 5 Parts Lists CONTENTS Blank Page ...
Page 479: ...5 9 Chapter 5 Parts List Blank Page ...
Page 483: ...5 13 Chapter 5 Parts List Blank Page ...
Page 490: ...5 20 Chapter 5 Parts List PL 7 2 500 PAPER EXIT 2 2 OPTION FACE UP TRAY ILLUSTRA TION ...
Page 496: ...5 26 Chapter 5 Parts List OPTIONS PL 10 1 OPTION DUPLEX ILLUSTRATION ...
Page 501: ...5 31 Chapter 5 Parts List Blank Page ...
Page 529: ...6 19 Chapter 6 Principles of Operation J26119AA EP CARTRIDGE BTR ASSY ...
Page 531: ...6 21 Chapter 6 Principles of Operation LD Assembly JG6121AA SOS PWB Scanner Assembly ...
Page 535: ...6 25 Chapter 6 Principles of Operation ...
Page 558: ...6 48 Chapter 6 Principles of Operation Blank Page ...
Page 584: ...7 24 Chapter 7 Wiring Diagrams and Signal Information Blank Page ...
Page 608: ...Chapter 9 ESS Options Chapter 9 Controller ESS Options Contents Blank Page ...