No Image Appears (Entirely White) - Kyocera ECOSYS M2135dn Service Manual

(1-1) No image appears (entirely white)

Image sample
1. Table scanning
Trouble location
1 Contact glass
assy
2 FFC cable CIS
3 Home position
sensor
4 Scanner drive belt
5 Scanner drive
gear
6 CIS
7 Main/Engine PWB
2. DP scanning
Trouble location
1 Original
2 Contact glass
assy
3 FFC cable CIS
4 Home position
sensor
5 Scanner drive belt
Check
Check the position where the
contact glass is attached.
Check the FFC cable connec-
tion between the CIS and the
main PWB / the engine PWB.
Or, check the wire's continuity.
Check the location where the
home position sensor is
attached.
Check that the scanner drive
belt is loosely attached.
Check that the scanner drive
gear is loosely attached.
CIS is defective.
Main/Engine PWB is defective.
Check
Check the side of set original
document.
Check the position where the
contact glass is attached.
Check the FFC cable connec-
tion between the CIS and the
main PWB / the engine PWB.
Or, check the wire's continuity.
Check the location where the
home position sensor is
attached.
Check that the scanner drive
belt is loosely attached.
2S0/2S1/2S2/2S3/2S4/2S5/2SG/2SH/3RA-1
If the contact glass is dislocated, reattach it.
If the connector is not inserted enough, rein-
sert it. Replace the wire if there is no continu-
ity.
If the home position sensor is out of position,
reattach it.
If the scanner drive belt is attached loosely,
secure the screw again.
If the scanner drive gear is attached loosely,
secure the screw again.
Replace the image scanner carriage and exe-
cute U411. (see page 4-48,6-53 )
Replace the main/engine PWB. (see page 4-
94)
Set the original again if the set side of it is
incorrect.
If the contact glass is dislocated, reattach it.
If the connector is not inserted enough, rein-
sert it. Replace the wire if there is no continu-
ity.
If the home position sensor is out of position,
reattach it.
If the scanner drive belt is attached loosely,
secure the screw again.
7-39
Measures
Measures