CHAPTER 3 DISASSEMBLY & REASSEMBLY
III. UPPER UNIT
1. Sensor PCBs
1) Remove the document eject tray.
2) Remove the open/close lever
{
1
and
spring. Disconnect the connector
{
2
and
unhook the 3 pairs of fitting parts
{
3
,
then remove the document sensor PCB
{
4
. Then, disconnect the connector
{
5
,
unhook the 2 pairs of fitting parts
{
6
, and
remove the skew sensor (R) PCB
{
7
.
Figure 3-301
2. Ultrasonic Drive PCB
1) Remove the sensor PCBs.
2) Remove the connector
{
1
and the cable
holder
{
2
(reusable type), then unhook
the 4 pairs of fitting parts
{
3
and remove
the upper light guide
{
4
.
Figure 3-302
3) Remove the ultrasonic drive PCB
{
1
.
Figure 3-303
3-10
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©
CANON ELECTRONICS INC. 2011 CANON DR-M140 FIRST EDITION
