Canon i900D Series, Service Manual

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1. NEW TECHNOLOGIES
(1) Direct digital camera printing (PictBridge support)
Printing can be performed directly from a digital camera. In addition to Bubble Jet Direct, the Camera
Direct Printing standard, PictBridge, is supported.
(2) Color LCD viewer
The color LCD viewer of 2.0-inch (176x128 pixel, 65,000 colors) is installed as standard equipment,
realizing two functions in the printer; image display and operation display with the operation panel.
(3) Media sensor
An optical reflective type media sensor is equipped in the sheet feeder unit, and it can classify
Canon-recommended paper set in the sheet feeder into 4 groups (transparency, glossy photo paper, plain
paper, and coated paper).
The media sensor function is disabled in the following conditions:
<Conditions in which the media sensor does not operate>
i.
In the printer driver settings, Media Type and Print Quality settings are other than Plain Paper /
Standard or Plain Paper / High.
ii. In Custom Settings of the printer driver’s Maintenance tab, the Identify paper type option is disabled.
(Enabled at default.)
<Anticipated troubles and their solutions>
If media sensor detection is incorrect, the following troubles are likely to occur:
i.
In printing on specialty paper, streaks or lines appear, or color hue is improper. (The print quality is
not good.)
Solution: Match the Media Type setting in the printer driver with the paper type actually set.
ii. In printing on plain paper, printing is smeared, color hue is improper, or black is faint. (The print
quality is not good.)
Solution: In Custom Settings of the Maintenance tab, disable Identify paper type.
(4) Automatic print head alignment
The automatic print head alignment is available via button operation, or via the printer driver utility.
Through scanning the print pattern as shown below and detecting the pattern’s reflection density with the
automatic print head alignment sensor (same as the CD-R sensor), the print head is automatically aligned
properly.
In the automatic print head alignment, the following items are checked, and, if an error is detected, the
automatic print head alignment failure error is indicated by the LED blinking in orange 11 times:
i. Paper
size
- Paper width: An error is detected when the paper width is smaller than the specified value.
- Paper length: An error is detected when the paper length is shorter than that of A4 / LTR.
ii. Faulty printing due to non-ejection of ink
- Ink ejection conditions: An error is detected when non-ejection of ink occurs.
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