MP6500, SC541-Sc542

[ferastec]

Hi guys

One of my machines, MP6500. giving often SC542,SC541. I have changed every things related to this issue.
The problem is coming once in the month and some time once every three month, as well as I have upgrade all the firmware, but still same issue.

Any advice?

Regards

[imaginemoko]

Voltage Regulator... to supply constant 220v and proper grounding....

[ferastec]

i have even changed the power supply unit!

[Vulkor]

Customers Power from wall clean and Steady? On a Surge Strip?

Room is not too hot? Machine has sufficient room in front and all sides.
By replacing you mean entire fusing unit? Harness that Fuser Connects to on back of Machine?

[imaginemoko]

NOt the PSU sir... just a regulator to ensure the proper voltage that the machine needs.... i guess you have SC 542 during moring upon the machine is switch on?

[st0ll3n_m1k3]

do not use the aftermarket hot rollers(ie katun) just an idea.

(edit) some of them are slightly thicker. causing the sc 541/542 Also, does everything include thermistors? and we have had several thermistors bad comming from after market vendors. We of course still use the aftermarket vendors for some of our inventories, but problem machines get oem.

[stephend]

do not use the aftermarket hot rollers(ie katun) just an idea.

(edit) some of them are slightly thicker. causing the sc 541/542 Also, does everything include thermistors? and we have had several thermistors bad comming from after market vendors. We of course still use the aftermarket vendors for some of our inventories, but problem machines get oem.

Customer Power problems are most of the time the answer for this SC codes.
Working for manufacturer we use just genuine parts and let me tell you we have the same problems...tons of SC542, 545, 555 from many different reasons starting with power, bad thermistors and ending with not enough space/air flow...but we can not afford to loose any customers so we continue to replace thermistors and other parts to keep the machines running. Voltage regulators will be a good solution if we'll be able to afford them.
Ricoh posted on TSC 2 TB regarding this problems with sep by step actions and logic charts. One is under 5500 model and the other one under 6000 model.

FOR SC 542
Most cases are caused by one of the following:
1. Thermistor is bent and/or deformed, or a foreign object is attached to it. (often...caused by paper jams mishandled by the user)
2. Thermostat disconnection (never)
3. Fusing lamp disconnection (never)
4. Fusing lamp harness disconnection or incorrect attachment (almost never)
5. Insufficient voltage from the AC power supply (Cust power problem often)
In rare cases, the SC542 can be caused by one of the following:
6. PSU malfunction (almost never)
7. IOB malfunction (almost never)
8. Deformation/damage to the fusing unit as a result of the unit being dropped or mishandled during machine maintenance (rarely).
9. The drawer connector is not connected properly. (rarely)
Hope this will help you.

[ferastec]

Ok guys

I am using original parts only as we are the main distributor of Gestetner.

In the same room we have 4 of these machines same MP6500, 3 are working fine. and the power in my City is very good, we never use any regulator as the power in this city is prefect.

The issue here if we reset the code the problem will be solved and then maybe after 20 days it will come, I even interchange the entire fusing unit(full fusing drawer).

But you are having good idea stephend, could be user issue after removing the paper jam.

But then how to sort out this issue, if the user removing the paper in bad way, in that room there are 70 users?

[Vulkor]

In situations like that we have the office manager designate 3 people to remove jams and receive lite training from the techs.


Fusing Fans working? Exhaust filters clean?

[TonerMunkeh]

Try a new drum potential sensor. I've had a few that have done this.

[ferastec]

Yes, all the fan are working fine,

you know the issue as i said the problem is not often once in the month or once every two months

[imaginemoko]

am just thingking.... given a 70 users in a room... i assume a 70 PC and a 4 MP 6500, does this 4 Mp 6500 have all dedicated wall outlet? as mention replace the PSU, whole fusing but still... meaning the problem is not there... we all know that it is easy to reset sc 542. open the front door pull the fusing unit just a 3 screw clean the thermistor, close enter the sp mode then off... on. am just wondering unlikely that the un common of 4 machine is the power source (outlet) and if the power is equally distributed on every appliance (all the time)????

[Dave Carwile]

Sc 542

If this happens even after replacing the entire fusing assy I would take a good look at the paper. I suspect they are using a lot of 24 lb or heavier. This is ok if they have set the thickness settings, but if not, we have found that the thicker paper causes the temperature to drop too much during long runs.

[Vulkor]

If this happens even after replacing the entire fusing assy I would take a good look at the paper. I suspect they are using a lot of 24 lb or heavier. This is ok if they have set the thickness settings, but if not, we have found that the thicker paper causes the temperature to drop too much during long runs.

Good info, wouldn't have thought of this.

[ferastec]

yas, i have already thought about it, but the paper is 80 Gm, normal one.

today itsalf the customer log service call for the same issue, lat call for this issue was 2 of june!!

i am thinking now to change the switch on the font door, do you think it is going to help, in fact nothing left!!!