KM bizhub C364e touch panel unresponsive

[tsbservice]

Hi guys. Just fly over one C364e machine with touch panel completely unresponsive to touches. It goes to ready, it prints fine, buttons are working but touch not.
Strange thing is I went into SM via trouble reset door and touch worked perfectly. I saw a lot of C-FA14 errors in history and also one C-D411.
When I perform full self-diagnostic machine ended it with C-4091 which was recovered upon reboot.
I will try FW first but in your experience and wisdom where should I start with parts - Panel assembly, MFPB, interface cable, other?
Should I try calibration of panel via USB memory?

TIA

[tsbservice]

Have a way to go thanks to talk with senior tech member of CTN. What if HDD started to act up, that would explain somehow why touch panel works in SM.
Next time would start doing Logical format and try to disconnect and disable HDD and see how it goes

[blackcat4866]

I've only had two kinds of operation panel failures on the "e" series: catastrophic (i.e. fork lift though the screen), and bizarre (i.e. strange color palette, not changeable, but otherwise fully functional).

The catastrophic always requires panel replacement.
The bizarre may someday require a PRCB, but as long as it remains functional I'll leave it be.

=^..^=

[tsbservice]

BC, thanks for your reply. It's not visually damaged but is fully inoperable in user mode.
They cannot scan or copy just print.

[copyman]

Really a strange one. You would think if screen is bad it would never come on.

Definitely worth a shot to do touch panel adj by powering on machine with firmware USB in "service port" and hold down yellow reset while turning. Similar to trouble reset but the touch panel adjust screen will come on instead (hopefully). After touch panel adjustment the firmware screen will come up. You can exit at that point if firmware doesn't need to be upgraded.

You already know touch screen adj procedure but posted it for others as well.

Can't wait to hear what it was because I have over 100 of these I work on.

Good luck

[srvctec]

Really a strange one. You would think if screen is bad it would never come on.

Definitely worth a shot to do touch panel adj by powering on machine with firmware USB in "service port" and hold down yellow reset while turning. Similar to trouble reset but the touch panel adjust screen will come on instead (hopefully). After touch panel adjustment the firmware screen will come up. You can exit at that point if firmware doesn't need to be upgraded.

You already know touch screen adj procedure but posted it for others as well.

Can't wait to hear what it was because I have over 100 of these I work on.

Good luck

What the heck?!! All I work on for decades is KM and I've never even heard of this touch panel adjust thing on these models (older ones, of course but they were resistive). I can't seem to find any info on it on KM's site, either. BUT, a quick search in the service manual and there it is. I've never had to replace a touch panel on any of the 4 series or newer so wasn't aware of it. Apparently there is another way to manually do the adjustment as well. From the SM:

(1) Touch panel calibration
• After replacing the control panel unit, you must perform the touch panel calibration.
Perform one of the calibration procedures described below.
(a) Panel Calibration by using USB memory
1. Connect the USB memory containing the MFP firmware data to the service port.
For information on how to store the firmware data into a USB memory, refer to “J.2. USB memory”.
2. While pressing the ‘Reset’ key, turn the main power switch ON.
3. As the calibration screen appears, press the Start key, perform calibration and wait for a while.
4. Confirm that the completion message. Touch [Close].
5. Turn OFF the main power switch, and remove the USB memory.
NOTE
• Once the panel calibration has been completed, panel screen transit to the firmware writing mode and start to update
automatically after 30 seconds.
(b) Panel Calibration by manual operation
1. Press [Menu] -> [Counter] -> [Display Keypad].
2. Press Stop -> Clear -> 1 -> 1 -> 6 -> 6 -> Start key, then calibration starts.
3. After 30 seconds, turn OFF the main power switch.



I learned something new which is what I love about this job!

[tsbservice]

Hi guys and thanks all for the responses, much appreciated.
I somehow advanced on this bizarre problem now they can print and also copy but it's not fully fixed atm.
It bothers me utmost to solve this one as it's not common panel failure or something I ever heard of.
I will definitely follow up.

[blazebusiness]

Hi guys and thanks all for the responses, much appreciated.
I somehow advanced on this bizarre problem now they can print and also copy but it's not fully fixed atm.
It bothers me utmost to solve this one as it's not common panel failure or something I ever heard of.
I will definitely follow up.

Would be nice if you had a machine you could pull a working control panel from and swap it out to see if that helps. That Control Panel Assembly is the same on all Bizhub C224e C284e C364e C454e C554e C654e C754e series copiers.

Swapping that panel would certainly confirm or eliminate it as the cause of the issue.

[tsbservice]

Would be nice if you had a machine you could pull a working control panel from and swap it out to see if that helps. That Control Panel Assembly is the same on all Bizhub C224e C284e C364e C454e C554e C654e C754e series copiers.

Swapping that panel would certainly confirm or eliminate it as the cause of the issue.

Thanks blazebusiness. Unfortunately I haven't parts machine to steal from but may search for one.
Take care.

[blazebusiness]

Thanks blazebusiness. Unfortunately I haven't parts machine to steal from but may search for one.
Take care.

Too bad you're not near San Diego, California....I'd give you one to try. We have a ton of used 4 series machines we use as rental copiers.