OKIDATA DOC-IT3000, Service Manual

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Service Guide DOC-IT3000/4000
Chapter 3 Maintenance & Disassembly
3.1.02 Maintenance Precautions
· Do not disassemble the Doc-It 3000/4000 if it is operating normally.
· Before starting disassembly and reassembly, always turn the AC power switch OFF and pull out the AC
plug.
· Detach the interface cable, if installed.
· Do not remove parts unnecessarily: try to keep disassembly to a minimum.
· Use the recommended maintenance tools.
· When disassembling, follow the listed sequence. Failure to follow the correct sequence may result in
damaged parts.
· Since screws, collars and other small parts are easily lost, they should be temporarily attached to the
original positions.
· When handling circuit boards use extreme care. ICs such as microprocessors, ROM and RAM
can be destroyed by static electricity.
· Do not place printed circuit boards directly on conductive surfaces.
· Follow the recommended procedures when replacing assemblies and units.
· After replacing the drum cartridge, clear the drum counter by following the Drum Counter Reset
Procedure in Section 3.3 of this Service Handbook.
· After replacing the fusing unit, clear the fusing unit counter by following the Fuser Counter Reset
Procedure in Section 3.3 of this Service Handbook.
· After replacing the LED head, check to see if the LED Head Drive Time rating needs to be set. Use the
Setting the LED Head Drive Time Procedure in Section 3.3 of this Service Handbook.
· After replacing the automatic document feed unit (ADF), perform these two procedures:
Reset the ADF counter by following the ADF Counter Reset Procedure in Section 3.3. of
this Service Handbook
Perform the ADF Slip adjustment by following the procedure in Section 3.3 of this Service Handbook.
· After replacing the scanner unit, reset the Total Scanned Document Counter to zero. Use the
Procedure in Section 3.3. of this Service Handbook.