Service manual

FrameMaker Ver5.5E(PC) CF3102/CF2002 TROUBLESHOOTING
02.06.13
T- 9 3
(18) Printer Monocolor: gradation reproduction failure
<Typical Faulty Images>
<Troubleshooting Procedure>
Section Step Check Item Result Action
Photo/
Density
1 Original type and screen pat-
tern are selected properly.
NO Change screen pattern.
LPH Assy 2 LED retracting lever is locked
in position.
YES Slide out the Imaging Unit
and reinstall.
IU 3 Dirty on the outside. YES Clean.
LPH Assy 4 The surface of the lens array
is dirty.
YES Clean with cleaning jig.
ATDC Sensor
window
5 ATDC Sensor window is dirty. YES Clean.
State Confirm
Level His-
tory 1 (Tech.
Rep. Mode)
6 AIDC output value is around
4.2 V.
NO Clean AIDC Sensor.
Check Image Transfer Belt
for damage.
Gradation
Adjust (Tech.
Rep. Mode)
7 Conv. Valuefalls within the
specified range as checked
through Gradation Adjust.
Max: 0 ±100
Highlight = 0 ±60
NO Go to step 11.
Image Adjust
PRT Max
Density (Tech.
Rep.Mode)
8 The problem has been elimi-
nated through the adjust of
PRT Max.
NO Go to next step.
Image Adjust
PRT High-
light (Tech.
Rep. Mode)
9 The problem has been elimi-
nated through the adjust of
PRT Highlight.
NO Go to next step.
4011T034AA 4011T029AA