MX421 with broken Start Button

[i-have-no-clue]

Hello,

I have a Mx421 with a broken Start button. The switch on the panel board is broken.
Could I use the operation panel from another used machine?
I've read somewhere that you can't do this with Lexmark machines.

Thank you.

[mloudy]

Re: MX421 with broken Start Button

From everything I have been told you can't. I have never tried to swap pwbs in Lexmarks to see what will happen.

If you can leave a loaner you might try on of these tact switches from DigiKey:

EVQ-P9W02M
EVQ-P9102W
EVQ-P9102M
TL6330AF200Q
EVQ-P2602W

.068 vs. $123.72

These are surface mount and not easy to replace.

[Lance15]

Re: MX421 with broken Start Button

The Op Panel on Lexmark's hold critical printer information. Can't replace with a used or refurbished. Must be new so the information can be copied from the systemboard/mainboard (DC Controller).

[mloudy]

Re: MX421 with broken Start Button

A smart designer would have split the part of the pwb with the keyswitches from the LCD diplay. Very stupid design and I think most if not all new Lexmarks are made this way.

[Phil B.]

Re: MX421 with broken Start Button

A smart designer would have split the part of the pwb with the keyswitches from the LCD diplay. Very stupid design and I think most if not all new Lexmarks are made this way.

Hey just because an engineer has a degree you expect them to think LOGICALLY? [emoji38][emoji28][emoji1787]

Sent from my SM-G960U using Tapatalk

[dalewb74]

Re: MX421 with broken Start Button

The Op Panel on Lexmark's hold critical printer information. Can't replace with a used or refurbished. Must be new so the information can be copied from the systemboard/mainboard (DC Controller).

i totally agree with lance on this one. if you don't follow the service manual you can basically brick the copier. good luck!