Kyocera ECOSYS M2135dn Service Manual page 417

(1-3) The entire image is faint
Image sample
1. Table scanning
Trouble location
1 Density adjust-
ment
2 Scanner adjust-
ment
3 Contact glass
4 Home position
sensor
5 FFC cable CIS
6 Scanner carriage
7 LED
8 CIS
9 Main/Engine PWB
2. DP scanning
Trouble location
1 Density adjust-
ment
Check
Check the setting of the density
adjustment.
Check the scanner automatic
adjustment.
Check if the contact glass is
dirty.
Check the location where the
home position sensor 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
scanner carriage is attached.
Check if the LED is lit.
CIS is defective.
Main/Engine PWB is defective.
Check
Check the setting of the density
adjustment.
2S0/2S1/2S2/2S3/2S4/2S5/2SG/2SH/3RA-1
Deactivate EcoPrint if it is activated. Or, if the
density is too low, choose an image quality
that suits the original documemt type.
Increase density.
Perform the background color adjustment
using the system menu.
Execute maintenance mode U411 [Table]
(Chart A) to adjust automatically.
(see page 6-53)
If the contact glass is dirty, clean it and the
shading plate at the backside of it.
If the home position sensor is out of position,
reattach it.
If the connector is not inserted enough, rein-
sert it. Replace the wire if there is no continu-
ity.
If the scanner carriage is out of position, reat-
tach it.
If the LED is not lighted, replace the scanner
carriage and execute U411. (see page 4-48,6-
53 )
Replace the image scanner carriage and exe-
cute U411. (see page 4-48,6-53 )
Replace the main/engine PWB. (see page 4-
94)
Deactivate EcoPrint if it is activated. Or, if the
density is too low, choose an image quality
that suits the original documemt type.
Increase density.
Perform the background color adjustment
using the system menu.
7-42
Measures
Measures