Printer Main Unit Troubleshooting Flowchart - Canon PIXMA MP150 Service Manual

6. TROUBLESHOOTING FLOWCHART
6-1. Printer Main Unit Troubleshooting Flowchart (how to confirm printer operation at refurbishment)
Power ON
Service Call
Error?
No
Open access cover,
and install print head
Service Call
Error?
No
Connect to computer
Shipment inspection
pattern printing
Correct?
Yes
Main waste ink counter
less than 7%?
Yes
Normal
<Note for normal printer refurbishment>
At end of refurbishment, set the printer to the default shipment conditions (with the paper lifting plate in the raised
position, and the carriage locked in the home position), following the steps below.
1. Install the ink cartridges, and while pressing and holding the Power button, connect the AC plug. After the
Power LED lights in green, with the Power button still pressed, press the Resume/Cancel button 2 times,
and release both the Power and Resume/Cancel buttons. (Each time the Resume/Cancel button is pressed,
the Alarm and Power LEDs light alternately, Alarm in orange and Power in green, starting with Alarm LED.)
2. Print the shipment inspection pattern, and reset the EEPROM, following the procedures in 4. SERVICE
MODE.
3. Press the Power button to turn off the printer. (The paper lifting plate is raised, and the carriage moves to
the print head replacement position.) Remove the ink cartridges. (DO NOT print after this point.)
Yes
Yes
See 4. SERVICE MODE for
printing method.
No
Replace print head and print
shipment inspection pattern
Correct?
Yes
No
Visually check the platen waste ink
absorber, and replace it if it is
soiled.
< Shipment inspection pattern check items>
(See APPENDIX 1, SHIPMENT INSPECTION PATTERN 1.)
1. Non-ejection of ink: Yes
2. Top of form:
3. Vertical lines:
4. Gray area:
No
Defective
(15/24)
Off the paper
Not connected
White lines / uneven density NG
NG
NG
NG