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CHAPTER 3 DISASSEMBLY & REASSEMBLY
2. Upper Reading Guide
Note: This component should not be
disassembled unless necessary
because once the component has
been removed, there is a risk of dust
getting inside the reading unit.
When disassembling, be careful with
dusts and do not touch the inner
surface of the glass or the surface of
the lens array.
1) Remove the upper reading unit.
(Page 3-14)
2) With the reading unit upside-down,
unhook the 8 pairs (4x2) of fitting parts
{
1
and remove the case
{
2
. Then
remove the CIS unit from the reading
guide
{
3
.
Note: Do not damage the hook. Do not drop
the CIS unit.
Figure 3-403
Notes on assembling
Ensure that there is no dust or dirt on
the CIS unit and reading glass.
There should not be any raised parts or
gaps in any of the fitting parts.
3. Lower Reading Unit
1) Open the upper unit, spread open the left
side hooks
{
1
using a tool to unhook the
fitting parts, and then lift up the end of
the reading unit
{
2
. Pull out the reading
unit while unhooking the fitting parts on
the opposite side.
Note: Do not pull it excessively because the
cable is connected to it.
Figure 3-404
2) Remove the cable
{
1
from the cable
holder, then remove the connector and
remove the reading unit
{
2
.
Note: Take care when handling the leading
end of the cable, which is split into
thin cables. Care is also required for
the thin connector.
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©
CANON ELECTRONICS INC. 2011 CANON DR-M140 FIRST EDITION
3-15