Canon Pixma ip 4300 DEAD

[teckat]

THANK YOU-THANK YOU!!!
Now I have to find free time to look up to the printer!
Do we know the voltages at each pin?

only the block diagram is available/ if Canon posted circuit diagrams on these, they are not found/ an HP similar model may have it posted somewhere

power adapter block is easy to read -pin 3 is probably 24v

[lary leon14]

Thank's again!

[WST]

ip4300 pinout

My 3.5yr old ip4300 died the other day. It was after I was working on the printhead and trying to get the PGBK to work. Nothing I did worked (cleaning with alchohol & water, drying throughly, trying a new cartridge, using cleaning/deep cleaning operations) and I was going to prime the black pad with some ink but when I went to turn it on it suddenly wouldn't power on. From reading other posts it seems that a bad head can kill the logic board. But I wanted to first check the supply and took it out of the instrument. The connector has 5 pins, the 2 black are GND, 2 of the others are 24V and 32V and the one on the end toward the edge of the board is Sense. It is NOT the same as an ip4200. AND you will see 7.5V and 10V until the sense line is active, the sense sits near GND if the AC adaptor is taken out of the printer. The sense line goes through a 1k resistor and to the base of an NPN transistor on the power board. I couldn't find a Serv. Manual online so I just figured it out myself. Anyway, I put 3.3V on the sense pin (almost anything will work because of the 1k resistor) and GND on one of the GND pins. That made the other two pins go from 7.5V/10V to 24V/32V. So apparently there is a low power mode and normal power mode.
So, if this is happening to you then you have some choices:
1) Assume that some head sensor is saying the head is bad and so the printer won't turn on. However, I have read that if the head goes it can kill the logic board. So if you put in a new head, the bad logic board can kill a good printer head. Take your chances.
2) Spend the money and buy a ip4300 service manual (or try to debug using the ip4200 service manual) and figure out why the sense pin isn't being driven by the logic board and fix the problem. Good luck
3) In my case, figure you got 3.5years out of the printer (paid $120), a new head is >$50 and may not fix it, a logic board is $??, and it really isn't worth fixing.

Anyway, you can check out your supply, my turned out to be good and the voltages step up when the sense line is pulled high.

Hope this helps!

[lary leon14]

Thank you!
I allready bought a mg5250 multifunction printer,but i will check this advice to see if i could repair it!
Anyway thank you again!

[Taurus_56]

Where is the fuse.

Hi, are there any diagrams of the power supply pack itself. I believe there is a fuse on the this board but do not know what it looks like. Can anyone help identify this fuse.
My pixma iP4300 just won't turn on & I think it may be the fuse?

ip4200/ check it out
[ATTACH=CONFIG]6995[/ATTACH]



[ATTACH=CONFIG]6998[/ATTACH]

[teckat]

After 5 years of use= throw in garbage/ not worth fix

check your AC in/ & AC output

The power does not turn on.=
Replace the
- AC adapter, or
- logic board ass'y
If u replace the logic board ass'y, check the waste ink amount (by service test print or EEPROM
information print). If the waste ink amount is 7% or more, also replace the ink absorber kit

AC POWER.JPG
AC1.JPG