Dell 2135cn Service Manual page 410

Step
Checking the Platen Glass
Open the ADF and check the Platen Glass.
3
Are there any damages or foreign substances on the Platen
Glass?
Checking the Vertical stripes.
4 Print the contamination check page.
Is the image printed correctly?
Checking the defective parts
Print the [Pitch Configuration Chart] in [Chart Print] in
[Diagnosis] tab of [Tool Box].
5 When the vertical stripes of periodicity are observed, check
the defective parts by comparing the printed vertical stripes
with the Pitch Chart. (Refer to Chapter 4.1.)
Are there any vertical stripes matching the chart?
Checking the TRANSFER ASSY for connection
Open the COVER ASSY FRONT.
Are four HV terminals on the TRANSFER ASSY, and four
springs on the frame (PL4.1.11, 12, 13 and 14) dirty and/or
deformed?
6
Version 3 2008.06.13
Check
1 - 382
Chapter 1 Troubleshooting
Remedy
Yes
Replace the IIT
ASSY SUB or
remove the
foreign Go to step 5.
substances.
(Removal 59/
Replacement 2)
Printing data is
incorrect, then
check the printing
Go to step 5.
data which the
problem
generated.
Replace the
corresponding
parts.
When the result
corresponds to the
[b-12 PHD] of the
pitch chart,
performing the
Go to step 6.
[PHD Refresh
Configuration
Check] of [Chart
Print] in
[Diagnosis] tab of
[Tool Box] may
improve image
quality.
Clean or replace
the TRANSFER
Go to step 7.
ASSY or
SPRING(s).
No