Ricoh MPC2050 SC542

[Spar]

I have this service code and have done following:
1. Changed Heating roller thermostat
2. Changed pressure roller thermostat
3. Changed front thermistor.

Still hace SC 542, not bale to reset. It is asking contact administrator. Please help help?

[slimslob]

You might have an open heating element.

[Spar]

You might have an open heating element.

I checked heating elements by putting power directly to them, both are turning on,

[Spar]

You might have an open heating element.

what should be reading of these Thermisters at room temp.?

[slimslob]

Normal room temperature reading should be 25 to 27 degrees when checked in System SP display temperatures.

[solorajder]

Did you reset SC code in SP mode?

Sent from my G8441 using Tapatalk

[Spar]

Did you reset SC code in SP mode?

Sent from my G8441 using Tapatalk

yes it came back with SC547
the fuser unit is not getting power form the power supply Board.

[davel]

I checked heating elements by putting power directly to them, both are turning on,

That sounds a bit dangerous.

[fshead]

I checked heating elements by putting power directly to them, both are turning on,

i think most of must would just meter out the heating lamps.
You might need a point to point to figure if you have a power supply issue versus a controller issue.
does the fuser attempt to warm up at all,is it ice cold or warm after coding out/.

[Spar]

i think most of must would just meter out the heating lamps.
You might need a point to point to figure if you have a power supply issue versus a controller issue.
does the fuser attempt to warm up at all,is it ice cold or warm after coding out/.

Fuser does not attempt to warm up atll.


After I reset the sc code , it came up with SC547, whcih is pointing to power supply. There is no ourput power to the heaters of the fuser unit, looks like the relays are not commanded by the control unit to turn the heaters on. Do you know how the commands are generated to turn the power on to the heaters of the fuser unit?