Question about Office Equipment & Supplies
Posted by Anonymous on
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Posted on Jan 02, 2017
H there below is what is stated in the service manual and I suggest to change the power cord before the main PSU (Power Supply Unit)
SC 560 Zero Cross Error
When the power switch is turned on. The machine checks how many Zero-cross signals are generated during 500 ms. If the number of Zero-cross signals is more than 66 or less than 45 and the condition is detected more than 10 times this code is shown.
Cause is electrical noise in the supply from the power cord.
Posted on Jan 13, 2008
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
• 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
3. Replace the fusing unit.
Posted on Dec 01, 2008
SOURCE: Ricoh 3050 printer, Error 990
We got the same error on our machine, so I called Ricoh Direct Tech Support and they said it is a known manufacturer's error. All you have to do is 1. make sure your product is registered, 2. call them up and tell them the error and 3. they will send you a new machine. You will have to send back the old machine in the same box, but they provide the RMA for you to ship it back in.
Posted on Jan 09, 2009
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