Canon Pro-100 - 19 ALT flashes

[fabo]

Recently attempting to resurrect a Canon Pro-100 with a B200 error. After exhausting all the usual remedies, I purchased a new 'used' print head and the B200 error ceased.
But a new error code appeared - 19 Alt flashes.
Service tool SST5103_2017 just has codes 002 and 006 that forums indicates normal if major error.
Also removed, cleaned and reattached the 3 flex cables in the head - cartridge assembly

Problem seems to trigger after start purge: head moves left, does a LED dance back-forth and few times then alt 19 orange-white flash.
Checked the QM7-1442 board and the sensor board below - nothing obvious.
Installed a new 3rd party set of cartridges - All carts light up
During startup , if cover sensor is open , maintenance mode in printer properties responds and waits at printer center with opr message ' Cartridge refill' zone .
when sensor is closed, start-up continues, errors out and then printer properties also shows fatal error..
Also placed original print head back in printer with same results.

The prints (when working) were outstanding and really relied on the large format printing.,
Getting ready to scrap this out and get a Canon Pro-200 or 200S

Not sure what the printer is doing when it checks each cart multiple times,
but recall its the the same original fatal error -maybe the sensor below or on the QM7-1442 board.

 

[PeterBJ]

I don't know which service tool version is needed for the Pro 100. The use of a too old (too low version number) service tool will block access to service mode. Error 002 indicates a function not supported by the printer was attempted and Error 006 indicated the printer has not entered service mode.

The 19 alternate flashes indicates a problem with a cartridge not being recognised by the printer. Here is a list of Canon error messages from druckerchannel.de. You can use google translate or other translator if you don't read German.

Here is the 19 alternate flashes translated to English:

or from the Pro 9000 mkII service manual:

When the printer is powered on the cartridges are checked by passing the printhead under a photocell sensor that checks for the red light from the chips. This means there could be a problem with the sensor, a chip or the chip contact springs. See this post for a photo of chip contact springs.

There are no service manuals available for the Pro 100, but see this post about an older printer and the ink cartridge sensor.

As all the cartridges light up there seems to be no problems with the chips and the chip contact springs. But i have had a defective chip on a CLI-8 M cartridge that would light up when the printer was opened, but could not be recognised. With another CLI-8M cartridge installed the problem was gone.

I think the problem is caused by either the cartridge sensor or a defective chip. You could try to install the old cartridges again. Even if they might be empty they should not prevent the start up of the printer. You would of course get an error message about empty carts.