Canon i9900, i9950 Service Manual

 

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1.  When ink tanks were installed upon receipt of the printer from users. 

1)  Remove the ink tanks. 
2)  Perform print head deep cleaning (for all colors) three times. 

* Through this step, ink in the print head is emptied. 

3)  Remove the print head. 
4)  Re-install the print head. 
5)  Re-install the ink tanks. 
6)  Perform service test printing, and check the print result. 

See Section 3.5. Verification Items (1) Service test print. 

2.  When ink tanks were not installed upon receipt of the printer from users. 

1)  Perform print head deep cleaning (for all colors) three times. 

* Through this step, ink in the print head is emptied. 

2)  Remove the print head. 
3)  Re-install the print head. 

 
 

When installing the paper feed motor, the following procedures are required. 

 
 
 

                   

1) When installing the paper feed motor, fasten the screw

 

while

 

pulling in the direction of the arrow in the picture 

to set the belt is under tension. 

 

2) After replacement of the paper feed motor, perform a 
service test print, and confirm that

 

there are no abnormal 

sounds, or print results caused by an unseated belt, the 
motor being out of phase, or gear teeth problems. 

 
 
 
 
 
 

Note:    The red screws (displayed within the blue dotted lines in the image above) of the paper 

feed motor may be loosened only at replacement of the paper feed motor unit (DO NOT 
loosen them in other cases). 

 
 

For the i9900/i9950 model, 

gear phase adjustment of the lift shaft gear is not necessary.   

 
 
 
 
 
 
 
 
 
 
 

The red screws securing 
the paper feed motor