Ricoh V-C3 D081, Field Service Manual

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PCU
Before You Begin
The items that are replaced determine which SP codes must be done after the machine is re-assembled and
turned on. Here are some important rules that you should follow.
1. Initialize the TD sensor only once with SP3801-1 to -6.
• Never initialize the TD sensor more than once. Initializing the TD sensor more than once can
cause toner scatter inside the machine.
2. If you replace the developer for one or more colors, do the developer set up for each color as
described in this section.
3. Initialize the TD sensor only at the following times:
• At installation, exactly as explained in the installation procedure.
• After you replace developer (only initialize the TD sensor for the color that you replaced) as
instructed below.
Here is a summary of the important differences between SP3801 001-006 (Init TD sensor) and
SP3811 001-006 (Dev Setup Exe):
• SP3801 001-006 (Init TD sensor) only initializes the TD sensor.
• SP3811 001-006 (Dev Setup Exe) initializes the TD sensor and sends toner to the sub hopper
of each PCU. This covers the PCU drum with a layer of toner. Covering the drum with toner
prevents the cleaning blades from scratching or bending the drums.
• SP3811 is necessary only at installation or in a replacement procedure when both the developer
and cleaning blade are replaced together. If you use SP3811 for any other procedure, the toner
sent to the PCU is wasted.
Charge Units
The procedure for removing the drum charge components in the K PCU and YMC PCUs is different.
• The YMC PCUs use a charge roller to charge the OPC drum.
• The K PCU uses a charge wire unit to charge the OPC drum.
Preparation
1. Remove the PCU stand from the bottom of the machine.
PCU
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