General Procedures and Information
6-52
11/06
FaxCentre 2121/2121L
Figure 2
•
When the printer receives a PRINT signal, the polygon motor and the main motor start rotat-
ing and the paper is taken up and fed into the printer.
•
The printing is started when the CPU sends a VIDEO signal to the ROS a given period of time
after the leading edge of the paper actuates the paper feed switch (TOD signal).
•
The print start position for the 2nd line is defined by delaying the time, at which the VIDEO
signal is to be transmitted.
•
The start of scan sensor provided in the ROS ensures that the laser beam is emitted at the
same timing for all lines in the main scanning direction.
Laser Emission Timing
•
When a READY signal is detected a given period of time after the print command has been
issued, the CPU outputs a laser ON signal.
•
The laser ON signal causes a laser beam to be emitted and the laser beam travels to the pol-
ygon mirror, G1 lens, and the SOS mirror to eventually hit the SOS sensor, which generates
an SOS signal.
•
The SOS signal determines the laser emission timing for each line in the main scanning
direction.
Summary of Contents for 2121L - FaxCentre B/W Laser
Page 1: ...708P88662 11 06 Service Manual 708P88662 FaxCentre 2121 2121L ...
Page 20: ...Service Call Procedures 1 2 11 06 FaxCentre 2121 2121L Page intentionally blank ...
Page 28: ...Status Indicator RAPs 2 2 11 06 FaxCentre 2121 2121L Page intentionally blank ...
Page 44: ...Image Quality 3 2 11 06 FaxCentre 2121 2121L Page intentionally blank ...
Page 56: ...Repairs Adjustments 4 2 11 06 FaxCentre 2121 2121L Page intentionally blank ...
Page 108: ...Spare Parts List 5 4 11 06 FaxCentre 2121 2121L PL 2 Machine Assembly 1 3 5 6 2 4 ...
Page 110: ...Spare Parts List 5 6 11 06 FaxCentre 2121 2121L PL 3 Control Panel and Scanner 2 1 ...
Page 116: ...Spare Parts List 5 12 11 06 FaxCentre 2121 2121L PL 6 Control Panel Assembly 1 2 3 4 5 6 7 8 ...
Page 118: ...Spare Parts List 5 14 11 06 FaxCentre 2121 2121L PL 7 Paper Tray 1 2 ...
Page 122: ...Spare Parts List 5 18 11 06 FaxCentre 2121 2121L PL 9 Drive Transfer Unit ...
Page 124: ...Spare Parts List 5 20 11 06 FaxCentre 2121 2121L PL 10 Fuser Assembly 2 1 ...
Page 126: ...Spare Parts List 5 22 11 06 FaxCentre 2121 2121L PL 11 Power Supplies and ROS Unit ...
Page 128: ...Spare Parts List 5 24 11 06 FaxCentre 2121 2121L PL 12 Paper Feed Section ...
Page 130: ...Spare Parts List 5 26 11 06 FaxCentre 2121 2121L PL 13 Consumables Tools and Kits ...
Page 132: ...Spare Parts List 5 28 11 06 FaxCentre 2121 2121L Page intentionally blank ...
Page 134: ...General Procedures and Information 6 2 11 06 FaxCentre 2121 2121L Page intentionally blank ...
Page 187: ...General Procedures and Information FaxCentre 2121 2121L 11 06 6 55 Figure 1 ...
Page 206: ...General Procedures and Information 6 74 11 06 FaxCentre 2121 2121L GP 23 Service Log ...
Page 208: ...Wiring Diagrams 7 2 11 06 FaxCentre 2121 2121L Page intentionally blank ...
Page 219: ...Wiring Diagrams FaxCentre 2121 2121L 11 06 7 13 Main PBA and CPU PJ Locations Figure 1 ...
Page 220: ...Wiring Diagrams 7 14 11 06 FaxCentre 2121 2121L WD 1 Connection Diagram 1 of 5 Figure 1 ...
Page 221: ...Wiring Diagrams FaxCentre 2121 2121L 11 06 7 15 WD 2 Connection Diagram 2 of 5 Figure 1 ...
Page 222: ...Wiring Diagrams 7 16 11 06 FaxCentre 2121 2121L WD 3 Connection Diagram 3 of 5 Figure 1 ...
Page 223: ...Wiring Diagrams FaxCentre 2121 2121L 11 06 7 17 WD 4 Connection Diagram 4 of 5 Figure 1 ...
Page 224: ...Wiring Diagrams 7 18 11 06 FaxCentre 2121 2121L WD 5 Connection Diagram 5 of 5 Figure 1 ...