Ricoh R-C4 Service Manual page 207

21 July 2006
2301 5 Input – Front DFU
2301 6 Input – Rear DFU
2301 7 Temp Inside the Machine
Displays the temperature measured inside the machine just after power-on (by the
thermistor on the SBCU board) the last time that the fusing unit was less than
40°C just after the machine was switched on.
The transfer current is corrected in accordance with this value.
2801 Developer Initialization
Initializes the developer and resets the TD and ID sensor outputs to their defaults.
Do this SP after you fill the PCU with developer at machine installation and every
time developer is replaced.
2802 Developer Mixing
Mixes the developer and checks Vt. The machine mixes the developer for 2
minutes and while doing this, it reads the TD sensor output (Vt). It does not
initialize the TD sensor output.
If the machine has not been used for a long time, prints may have a dirty
background. In this case, use this SP mode to mix the developer.
2803* Developer Initialization Data
2803 1 Vts
When the machine detects a new PCU (photoconductor unit) in the machine, it
checks the heat seals at the creation of the first ID sensor pattern. After the
agitator is rotated for 30 sec., the machine creates the second ID sensor pattern
and corrects the reference value of the TD sensor. The corrected reference value
for the TD sensor is recorded here.
2803 2 ID Sensor PWM Value
Displays the PWM value of the ID sensor after performing the developer
initialization. This value is added to the value of SP2934 4 (PWM Start Value for
Vsg Auto Adjust).
2803 3 Flag DFU
2804 New PCU Check DFU
This SP determines whether the machine is set to recognize a new PCU.
[0~1/0/1]
0: New PCU recognition on.
1: New PCU recognition off.
SERVICE PROGRAM MODE
5-19