Chapter 2
2-41
2.8.2.8 Duplexing cooling fan failure detection
0013-8426
/ i-SENSYS LBP5360 / i-SENSYS LBP5300
The DC controller determines the duplexing cooling fan failure and notifies the video controller of "E805 (The duplexing cooling fan is faulty)", when the DU-
PLEXING FAN LOCK signal is kept for 10 seconds continuously.
2.8.3 Video Controller PCB
2.8.3.1 Outline
0014-5718
i-SENSYS LBP5300
The video controller receives print information from external devices (e.g., host computer) by way of interface cables. The information contains a CAPT command
used to communicate printer status and printer-specific characteristics and dot data, which is the result of conversion of print data by the host computer.
The data is sent to the DC controller circuit for control of laser diode activation.
If properly connected with a bi-directional interface, an external device may be used to check the printer status.
When printing is executed in a Microsoft Windows or Macintosh environment, CAPT (Canon Advanced Printing Technology) serves to reduce processing speed
and enhance the ease of operation to provide a user-friendly printing environment. To that end, CPU is designed for the following:
- The print data from the application is turned into dot data and sent to the printer without conversion into the printer's page description language (PDL).
- The printing environment may be checked and set on the host computer display by responding to dialog boxes.
- The printer status is indicated on the host computer screen: print end time, print paper movement, error status.
F-2-50
2.8.3.2 Overview
0014-7865
/ i-SENSYS LBP5360
The video controller receives print information from external devices (e.g., host computer) through interface cables.
Such print information contains commands used to exchange printer status and unique information as well as PDL data.
The PDL data is converted into a display list by the display list generation circuit, and turned into bitmap data for output to the DC controller. A check may be made
on the printer status using an external device.
Monitors state of printer
Creates bitmap image
Converts data into GDI-
compatible resource data
GDI data from application
Displays on screen
Host computer interface
Canon Advanced Printing Technology
Printer interface
Engine
Printing
Printer status information
Host computer
Printer
Summary of Contents for i-SENSYS LBP5300 Series
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Page 13: ...Chapter 1 PRODUCT DESCRIPTION ...
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Page 81: ...Chapter 3 DISASSEMBLY AND ASSEMBLY ...
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Page 116: ...Chapter 3 3 30 11 Remove the fixing motor 1 2 screws 2 F 3 226 ...
Page 117: ...Chapter 4 MAINTENANCE AND INSPECTION ...
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Page 123: ...Chapter 5 TROUBLESHOOTING ...
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