Canon PIXMA iP1500 Waste Ink Counter Reset.

Step1: Manual for Service mode
1. Unplug power and USB.
2. Open door and hold power button.
3. Connect power.
4. Close door, then release power button.
Step 2 : Softwarefor Permanent
1. Reconnect the printer cable.
2. OpenGeneral Tools software and select (USB PORT)
3 .Choose (SET DESTINATION 1) And it should be reset.
Remark"After service mode Pls use software for permanent reset"

Canoni850, i950, S600
Start with the printer OFF
1. Hold down RESUME and then hold down POWER
2. release RESUME
3. press RESUME twice, then release POWER
4. Let green light blink until printer is done futzing
Select function with RESUME press POWER to execute:
presses - light color - function
Number of presses - light color - function 0 presses - green- Test print (or exit service mode on i960)1 press - orange - EEPROM info print (plus grid nozzle diagnostic on i960) 2 presses - green - EEPROM initialize 3 presses - orange- Reset waste ink counter