WorkCentre 3210/3220 Multifunction Printer Service Manual
2-35
Theory of Operation
Laser Unit
The Laser Unit (LSU) receives image data from the PVC or HPVC and make
latent image on the OPC surface. The LSU uses dual beam system, LD1 and
LD2. The control method of the two beams are the same. In comparison with
a single beam system, dual beam contains half of the LSU’s frequency.
The LSU consists of laser diode (LD) and the polygon motor control. When
the printing signal occurs, the laser diode is turned On and the polygon motor
is enabled. When the light sensor detects the beam, H-SYNC occurs. When
the polygon motor speed becomes steady, Ready mode occurs. If these two
conditions are satisfied, the Laser Unit is ready. If the two conditions are not
satisfied, one of the two errors are reported as shown in the table below:
Error
Description
Polygon Motor Error
When the polygon motor speed is not steady.
H-SYNC Error
The Polygon Motor speed is steady, but the H-SYNC is
not generated.
Summary of Contents for 3210 - workcentre b/w laser
Page 1: ...WorkCentre 3210 3220 Multifunction Printer WorkCentre 3210 3220 Service Manual ...
Page 2: ......
Page 22: ...xx WorkCentre 3210 3220 Multifunction Printer Service Manual ...
Page 56: ...1 26 WorkCentre 3210 3220 Multifunction Printer Service Manual General Information ...
Page 92: ...2 36 WorkCentre 3210 3220 Multifunction Printer Service Manual Theory of Operation ...
Page 200: ...5 42 WorkCentre 3210 3220 Multifunction Printer Service Manual Print Quality Troubleshooting ...
Page 201: ...6 Chapter Adjustments and Calibrations In this chapter Adjustments ...
Page 204: ...6 4 WorkCentre 3210 3220 Multifunction Printer Service Manual Adjustments and Calibrations ...
Page 214: ...7 10 WorkCentre 3210 3220 Multifunction Printer Service Manual Cleaning and Maintenance ...
Page 342: ...8 128 WorkCentre 3210 3220 Multifunction Printer Service Manual Service Parts Disassembly ...
Page 380: ...9 38 WorkCentre 3210 3220 Multifunction Printer Service Manual Parts List ...
Page 414: ...1 8 WorkCentre 3210 3220 Multifunction Printer Service Manual Index ...
Page 415: ......