Oki LP-1040 Maintenance Manual page 287

<Clean the ASC1 board connecting part with air>
2.
Clean:
- the connector on the ASC1 board; and
- the connector on the harness side
with the air blow tool in order to remove any
foreign particle from the connecting area.
<Disconnect the CBLS-LVDS from the CIS unit>
3.
If the problem was not solved with the
operation above, perform the CIS unit
replacement procedure up to the step 10,
and disconnect the CBLS-LVDS from the CIS
unit. (See 9.15.6 CIS UNIT MNT and
PCB-ASSY-AIC1 MNT)
<Clean the CIS unit connecting part with air>
4.
Clean:
- the connector on the CIS unit; and
- the connector on the harness side
with the air blow tool in order to remove any
foreign particle from the connecting area.
Chapter 8 Troubleshooting (Scanner Image Quality Problems)
CIS unit connection
8-7