<!-- from fixya rte -->How do you find the waste ink tank? - Canon MultiPASS MP730 All-In-One InkJet Printer

SOURCE: canon multipass f80 waste ink tank

First off to do it will take you about an hour, cost you between 10 to 30 dollars. The best alternative is either take it to a Canon Dealer and pay 40.00 and don't worry if you break the seal, or I will tell you how to reset it so that it thinks it has no ink. DO NOT PLAY WITH THE OTHER SETTINGS OR YOUR PRINTER MAY NOT WORK AFTERWARDS.

This works on the F30, F60, and F80.
Resetting the Waste Ink Volume Counter
1) Enter SERVICE MODE.---
By pressing Menu-Copy-#
2) Select TEST MODE.
3) Select [8] PRINTER TEST in TEST MODE.
4) Select 3. [EEPROM CLEAR].
5) Select 0. [INK COUNT].
6) Press the [OK] key.
7) Press the [Stop/Reset] key (returning to the state of 3)), and then press the [ON/OFF] key.

Skip step (6) since there is no [OK] key on F30 printers.

SOURCE: waste ink tank full

please help me for repair waste in tank full canon ip3300.

SOURCE: waste ink tank full error 5b00

Check out:
http://www.fixyourownprinter.com/forums/inkjet/50418#1

SOURCE: waste ink tank full

normally, the logical solution is to replace your waste ink tank, but I have tried a solution which could make your canon printer function again.

Try this: With your printer turned ON, press and hold the I/O switch then pull off the power cord. This will turn off your printer. But without lifting your finger on the I/O switch put back your power cord. the I/O switch will blink for a second and will go off, then turn-on your printer again and see if it works.

SOURCE: canon smartbase mp370 printer on display waste ink tank near full

Please see the link below for resolution:

http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=238&modelid=9526

It indicates reset of printer or hardware repair for this error.