Canon i9900, i9950 Service Manual

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<Media sensor correction procedures> 
In the media sensor correction mode, using the reference white PET paper and reference plain paper of the 
calibration media kit (QY9-0064), press the Resume/Cancel button the specified number of times in the 
table below, and press the Power button. The media sensor correction operation must be performed once 
each with the reference white PET paper and the reference plain paper. 
Time(s) of 
Resume/Cancel button 
LED Operation 
1 time 
Orange 
Not used in servicing 
(In this mode, the set reference paper will be fed, and may be 
damaged. Please be careful not to select this mode.) 
2 times 
Green 
Reference white PET paper correction value operation
*1
 
3 times 
Orange 
Reference plain paper correction value operation
*2
 
4 times or more 
 
Return to the menu selection 
Note: 
- After each correction value operation, the mode returns to the service mode menu selection. After 
finishing either of the correction value operations, re-select the media sensor correction mode to 
perform the other correction value operation. 
 
- After performing the media sensor correction, confirm the values of the media sensor in service 
test print or EEPROM information print. 
(See Section 3.5 Verification Items, (1) Service test 
print, or (2) EEPROM information print.) 
 
*1:  Reference white PET paper correction value operation 
 
Set the A5-sized reference white PET paper (packed in the calibration media kit) in the sheet feeder in 
the landscape orientation. Then, press the Resume/Cancel button 2 times, and the Power button. 
 
Note:  There is no printing on the reference white PET paper. It can be placed with either side facing 
up, and with either edge at the top. 
 
*2:  Reference plain paper correction value operation 
 
After setting a sheet of the A5-sized reference plain paper (packaged in the calibration media kit) in 
the sheet feeder, press the Resume/Cancel button 3 times, and the Power button. 
 
 
The reference plain paper should be placed in the sheet 
feeder with the print side facing up, with the + marks 
printed area at top, so that it will feed in the direction 
indicated by the blue arrow in the figure. 
 
 
(7)  Flash ROM upgrade 
Refer to the applicable Service Information (SI) bulletin announcing the upgrade. 
 
3.5  Verification Items 
(1)    Service test print 
<EEPROM information contents> 
On the service test print (sample on the following page), confirm the EEPROM information as shown 
below. (The information is given in the upper portion of the printout.) 
 
 
 
 
 
 
 
 
 
Destination (model name)   
ROM Version 
Ink absorber waste ink amount (%) 
Number of times the print head is installed
Initial print date after installation 
(Default:  1970/01/01) 
* See Reference