[Electrical] MP 301 random characters when pressing keypad

[steele]

I have a problem with MP 301. Buttons suddenly not working as they should. It concerns only the right panel with keypad. For example start button causes sleep mode, counter key causes "fax mode", when I press "C" the result is a string for example "6#". Each key causes every time something else. I have uploaded the latest firmware but it did not help. The printer is working properly, but I can't use copy & scan functions. Mechanically panel looks OK. Machine has only 50k, and it's 2 weeks after the warranty.

[LNorris]

Re: MP 301 random characters when pressing keypad

first thing i would try is to run my palm of my hand across all the buttons several times. sometimes those buttons will hang and cause weird things

[TonerMunkeh]

Re: MP 301 random characters when pressing keypad

There is a custom ops panel firmware that deals with strange things like this, it's on my-ricoh.

[sturmtrooper]

Re: MP 301 random characters when pressing keypad

I have a problem with MP 301. Buttons suddenly not working as they should. It concerns only the right panel with keypad. For example start button causes sleep mode, counter key causes "fax mode", when I press "C" the result is a string for example "6#". Each key causes every time something else. I have uploaded the latest firmware but it did not help. The printer is working properly, but I can't use copy & scan functions. Mechanically panel looks OK. Machine has only 50k, and it's 2 weeks after the warranty.

We had a MP401, which I think has a similar OP panel, do the exact same thing. Especially the going to sleep when you hit start. We ended up replacing the two PCBs in the op panel that make up the left and right side buttons, you probably would only need the right side one.

[sturmtrooper]

Re: MP 301 random characters when pressing keypad

There is a custom ops panel firmware that deals with strange things like this, it's on my-ricoh.

I could not find that on TSRC or RFG esource.

[steele]

Re: MP 301 random characters when pressing keypad

We had a MP401, which I think has a similar OP panel, do the exact same thing. Especially the going to sleep when you hit start. We ended up replacing the two PCBs in the op panel that make up the left and right side buttons, you probably would only need the right side one.

I found it in parts catalog, it's called "PCB:UWVGA:OP-R:ASS'Y ". I order it from Ricoh. There is temporary firmware for panel on my-ricoh (D1271450 D1271451) but i haven't tested it yet. Solves problem with waking up.