My computer tells me that my ip90V printer waste ink tank is full and the printer light blinks. I can find no way to remove the waste ink tank to empty it.

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: ink waste absorber

Waste absorber is full. Where is the waste ink absorber and how do I empty it?

SOURCE: tank absorber full and lights blinking

The POWER Lamp Flashes Orange Eight flashes: Waste ink tank almost full
The printer has a built-in waste ink tank for the ink used during print head cleaning. Eight flashes indicates that the waste ink tank is nearly full. Press the RESUME/CANCEL button to cancel the error so you can continue printing. Before the waste ink tank becomes completely full, contact a Canon service representative.

Note
Canon recommends that you call for service as soon as this error occurs. Once the waste ink tank becomes completely full, printing will no longer be possible.

Clive

• 4362 Answers
• Posted on Feb 13, 2010

SOURCE: Waste ink tank removal

ok

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.
Please come back and just gave a vote, it will gave me some satisfaction to know am helping some one so I will keep on helping.
All The Best: Pineworks

Testimonial: "Very helpful. Would still like to empty the waste ink tank for copy quality purposes. I need an exploded assembly diagram / service manual. Any thou"