Verification Items - Canon i900D Service Manual

3.4 Verification Items

(1) Service test print
After repair, perform the service test print, and check the following:
<Print check items>
- Check 1, top of form accuracy:
- Check 2, EEPROM information:
- Check 3, nozzle check pattern:
- Check 4, vertical straight lines:
- Check 5, halftone:
- Check 6, CD-R / automatic print head alignment sensor correction:
- Check 7, media sensor correction:
<Service test print sample>
The line shall be within the paper.
The destination shall be correct.
Ink shall be ejected from all nozzles.
The lines shall not be broken.
There shall be no remarkable streaks or unevenness.
The results shall be OK.
Nothing printed indicates that the correction has been implemented.
(If not implemented, "MEDIA SENSOR = NO CALIBRATE" is
printed.)
Check 5:
Halftone
Check 6:
CD-R / automatic print head alignment sensor correction
Check 7:
Media sensor correction
1 - 20
Check 1:
Top of form accuracy
Check 2
EEPROM information
(Refer to the next page.)
Check 3:
Nozzle check pattern
Check 4:
Vertical straight lines