unknownasked Nov 22, 2004 at 8:40pm
Printer won't turn on
I Think I Know How to Fix This issue with printer . it is the power supply which caused This Problem to the printer . I Got Steps On This Blog And I Got it fixed Please Read https://techvaidya.com/printer-not-turning-on/ And Fix This Problem . Thanks
I have my doubts that the power switch is bad unless you spilled something on it. The switch module may be shared with the Deskjet 3820. There are lots of dead 3820s around that can be used for parts if the module is identical. If you actually need a new module, I can make some comparisons in the shop and tell you for sure.
If the power supply has failed, be aware that HP does not offer it as a spare part. I nearly lost my mind trying to find repair components. (Maybe it will just be a blown fuse.) The power supply of course was made offshore and that seems to be where all of the spare parts are. If the power supply has failed, I have some sources that may be able to do the repair, but it ain't cheap.
Deskjet 6122, Removing the case
1. Remove the small case piece on each side of the paper tray. There is small latch on each, releasable from the underside of the printer.
2. Remove the two T10 Torx screws on the top of the case. Pry upward with a slot style screwdriver under the tab that each screw went through, and the associated side piece will hinge outward and come off. Free the right side piece by releasing the latch that retains the keypad.
3. Open the hinged cover and release the large latch in front of the service station with a slot style screwdriver. Release the latch on the opposite side in the same relative position, and the main case will lift off
Have similar problem.
One day it just would not power up.
Checked everything external and finally took it apart per the above instructions.
The fuse still has conductivity across the two pins that are not tied together on the back of the board. So I don't think that's it.
Got both 18VDC and 32VDC at the power outputs.
The front buttons do not seem compromised.
Anything else to check?
You can get disassembly info here http://inkjetprinterhelp.us/cx6400.html Yes, Yes, Yes it shows a CX 6400 but the design is the same.
I had the same problem with a Canon ip100 PIXMA printer NOT turning on or responding. I searched you tube and found a link on how to disassemble the printer. I disassembled the printer, opened the ink well holder and discovered that the problem was a build up of excessive ink on the bottom right plate of the printer cartridge holder. I cleaned the excessive ink build up with rubbing alcohol and cotton swab, manually moved the cartridge holder to the middle of the printer and reassembled the printer. Problem solved. Green light on printer now stays on and printer is functioning properly.