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Re: Ricoh AP3800 COLOUR Laser Printer
SC 556 Pressure roller fusing lamp temperature fluctuation The pressure roller temperature changes by ±20°C or more in one second. This occurs three times in one minute or two consecutive times. • Loose connection of the pressure roller thermistor 1. Check if the fusing unit is properly set
and connected to the main frame. • Loose connection 2. Check if the pressure roller thermistor
connector is firmly connected. between the fusing unit and main frame
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The F2 class of error messages means that the keypad and the control unit aren't communicating properly. First turn off the circuit breaker to the range for a minute. Check if the error recurs after you clear the PF message. If the error recurs, turn off the power again. You need to check the wiring between the keypad and the control unit. Make sure that all of the wire harness connections are fully seated and all the wires are undamaged. It's not uncommon for one wire to get broken so check the continuity.
If that doesn't help, you probably need a new keypad. If you add a comment with the model number of your oven, I may be able to point you to a supplier.
hello there This is a verry common issue with these ovens Here is the meaning and a few things to determine what is at fault i have it listed below this error code can actually show up as any 1 of these and they all mean the same thing
F0 - F1 - F7
Stuck keypad may
mean relay is turned on.or has failed
Determine if problem
is with the Key Panel or Control by: 1. Pushing CLEAR/OFF pad. 2. Disconnecting Ribbon Cable from control and waiting
at least 32 seconds to see if Code recurs
If code recurs, problem is in the control. Replace control.
If code does not recur, problem is with the Key Panel.
SC is for "Service Call". The error may be caused by a defect or an irritation of internal sensors. Ricoh recommends to physically switch off the printer, wait for a few minutes and power on again. (Irritation by change in surrounding temperature) If you recently replaced any movable parts inside, remove it again and reseat, many parts inside are checked by sensors for proper seating. If this does not help, you need to call Ricoh customer service.