This is How to Reset Canon Pixma iP 1880 :
Waste Ink Counter Reset Manual for Service mode
1. Turn On iP1880
2. Push and Hold Resume button about 2 minutes
3. Release Resume button
4. Printer back to normal again
second step
B.Run the tools and follow this steps:
1. Select USB port
2. Click lock release
3. Click ip1800
4. Click device id
5. Clear waste ink counter by clicking MAIN & PLATEN
6. Check EEPRsaya Box
7. Click EEPRsaya Dump
8. Test pattern 1
9. Click lock release again then finishes
Waste Ink Counter Reset Manual for Service mode
1. Turn On iP1880
2. Push and Hold Resume button about 2 minutes
3. Release Resume button
4. Printer back to normal again
second step
B.Run the tools and follow this steps:
1. Select USB port
2. Click lock release
3. Click ip1800
4. Click device id
5. Clear waste ink counter by clicking MAIN & PLATEN
6. Check EEPRsaya Box
7. Click EEPRsaya Dump
8. Test pattern 1
9. Click lock release again then finishes