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MPC 7501 SC402 and 403
Hi, all. I just replaced the transfer belt and after running a few good prints I'm getting sc 403 and sc 404. I checked the connector to the id sensor, all good. I'm thinking the ID sensors are at fault. What prints that do come out are good as far as image quality. Anyone run into this before?
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supervisor
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Re: MPC 7501 SC402 and 403
hi ,
sc402 ID Sensor Pattern Maximum Coverage Error 1: K
The amount of toner applied to create the black ID sensor pattern between sheets
(SP3101-1 ID Pattern Display - Applied: K) exceeded the maximum threshold of 0.3
mg/cm2 due to an over supply of black toner.
• Black (or yellow) toner supply unit defective
sc403 ID Sensor Pattern Maximum Coverage Error 2: M
The amount of toner applied to create the magenta ID sensor pattern between sheets
(SP3101-2 ID Pattern Display - Applied: M) exceeded the maximum threshold of 0.7
mg/cm2 due to an over supply of magenta toner.
Magenta toner supply unit defective.
after u changed transfert belt:
Reinstallation
• Do the forced MUSIC adjustment with SP2111-1.
how to do:
1. Get a pack of Lubricant Powder B1329700.
• The ITB must be coated with lubricant powder B1329700 before installing a new ITB.
• The lubricant powder (B1329700) (composed of ZnSt) is specially designed for this machine.
• Never use setting powder (54429101) for this machine. Using this setting power will damage
the drum charge roller and cause problems with image quality.
• Do not use the yellow toner from this machine, because it contains developer, and this will
damage the drum and ITB.
2. While rotating the knob [A] in the direction indicated by the arrow, apply powder at [B] with a soft
dry cloth.
3. Keep rotating the ITB at [A] while continuing to apply the powder at [B] through one full rotation until
the ITB is completely covered with powder.
4. After the ITB has been completely covered with the lubricating powder, turn lever [C] to the up position.
5. After the ITB is completely covered with powder, rotate the knob [D] in the direction indicated by the
arrow.
6. Keep rotating the knob at [D] until the ITB has made one full rotation. This reverse rotation covers the
edge of the belt cleaning blade with lubrication powder.
Reinstallation
• Do the forced MUSIC adjustment with SP2111-1. (i kown some people do SP2111-3 before SP2111-1)
Image Transfer Unit
carefull if you have removed and changed itb sensor (belt position sensor):
• ITB
Reinstallation
After the reinstallation of the new sensor, do the following SP codes:
• SP2912-1 (Encoder Sn: Adj Light)
• SP2914-1 (Encoder Sn Get 1st Phase)
• SP2111-1 (Forced MUSIC Adjustment
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Trusted Tech
50+ Posts
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Re: MPC 7501 SC402 and 403
Had this same prob and it drove me nuts for a week. wound up being the HV PCB inside the ITB. It was coated with toner. Vac and clean both sides of PCB and prob solved! Hope this helps
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Re: MPC 7501 SC402 and 403
I had this problem also after cleaning the ID sensors, I think the machine was in shock because of a drastic change to the sensor readings, run a process self check and line adjust and I think you will be ok. This machine sucks anyway,we have stopped selling them. A new and different model is soon to be released I am hearing.
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Re: MPC 7501 SC402 and 403
Replacing the ID sensors took care of the problem.
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Technician
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Re: MPC 7501 SC402 and 403
The machine that god forgott and the japs dont care about. Have had this a couple of times and this is what i do... I switch of the machine and go home. the next day i call the customer and tell him to switch on again..and so far Bingo
4 times so far it has worked..
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Junior Member
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Re: MPC 7501 SC402 and 403
Hello
I confirm the answer of StrippedScrew that the tranfer pcb was coated with toner
Thank you
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Re: MPC 7501 SC402 and 403
Had the problem on a MP C6501 today after having replaced the ITB, ITB cleaning unit parts, and PTR parts. Since I knew the ID sensor was clean, I ran SP 3820-001 and SP 3820-002 IAW Goose's Guide. Problem corrected.
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Technician
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Re: MPC 7501 SC402 and 403
I completely agree. I work on these all day long, and I have gotten various 400 codes many times after servicing the PCU's or ITB. Now, after I do either, I run a few internal test prints of each color, and then run sp 3820-002. This seems to prevent most if not all of the dreaded after service 400 type error codes.....
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Technician
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Re: MPC 7501 SC402 and 403
Hello friends and colleagues
I want to ask you a question ?
the driver mpc6501 equals mpc7501
because I have a fault in a mpc7501 desire to replace it by a mpc 6501
Thank you!!!!!
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