Canon Color imageRUNNER C5180 Series, Руководство по обслуживанию

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Chapter 6
6-11
The machine uses the following scanning speeds to suit different modes;
T-6-4
6.3.2 Enlargement/Reduction
6.3.2.1 Changing the Magnification in Main Scanning Direction
For main scanning direction in both copyboard and ADF modes, the image is read at 100%, and the
magnification is varied by the main controller block.
6.3.2.2 Changing the Magnification in Sub Scanning Direction
For sub scanning direction in both copyboard and ADF modes, the image is read at 100%, and the magnification
is changed by the main controller block.
In SEND mode, the reading size is switched between 100% and 50% depending on the selected resolution.
6.3.3 Controlling the Scanning Lamp
6.3.3.1 Overview
The scanning lamp is controlled for the following, with associated control mechanisms operating as follows:
1. Turning On and Off the Scanning Lamp
The scanning lamp is turned on or off by the drive signal (XE-ON) generated by the CPU of the reader
controller PCB. When the signal is generated, the inverter PCB generates high-frequency high voltage using
the activation control circuit from the drive voltage (+24V) supplied by the reader controller PCB, thus
turning on the scanning lamp.
2. Detection Error Activation
The machine detects a fault in the intensity of the lamp as an activation error caused by a fault in the intensity
of the lamp at time of initial activation (shading correction).
ERROR CODE:
E225
- the reader controller PCB is faulty
- the inverter PCB is faulty
- the scanning lamp (xenon tube) is faulty
- CCD is faulty
- flexible cable has poor contact
Function Mode Scanning speed
Copier black-and-white 234 mm/sec
full-color 234 mm/sec
SEND black-and-white 468 mm/sec
full-color 234 mm/sec(600dpi)
468 mm/sec(300dpi)