Working on a MX-M950 and I get error code E7-20 look in service man. talks about LSU. Did firmware update and did get to run about 100 copies before it coded out. Need a little help on this one.
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Working on a MX-M950 and I get error code E7-20 look in service man. talks about LSU. Did firmware update and did get to run about 100 copies before it coded out. Need a little help on this one.
Do you think it might have something to do with the laser? =^..^=
If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=
Yes I'm trying to fix it going to see about pulling laser out of another copier we have in shop.
It may have something to do with the power supply.
With smaller mfp, like 1810-3610, the E7-20, E7-21 etc problem is because the AC DC PWB dont produce 5 volt to the LSU Mother PWB (CN-104, pin 1 should measure 5 volt from Pin 1 to ground) if its less then 5 volt, you will get the E7-20, E7-21 error just as you described it. To fix that problem you have to replace the ACDC PWB.
But in MX-M950 mfp you dont have an LSU Mother PWB, the power goes direct from PCU PBW to LCU PWB, so i guess it's PCU PWB or the regulator on the PCU PWB (That changes 24v to 5v before going to LSU PWB) or the HL PWB thats give the LSU PWB throughout the PCU PBW.
Thanks I will try and see what happens.
Try reseating the connectors on the LSU; corrosion builds up, and by reseating connectors it has cleared up codes and quality issues.Originally Posted by sharpsetup
"You can't trust your eyes, if your mind is out of focus" --
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