Service manual
FrameMaker Ver5.5E(PC) CF3102/CF2002 TROUBLESHOOTING
02.06.13
T- 9 1
(17) Printer Monocolor: low image density
<Typical Faulty Image>
<Troubleshooting Procedure>
Section Step Check Item Result Action
State Confirm
→
Ta b l e #
(Tech. Rep. Mode)
1 Check data for Vg and
Vb.
Color Vb: Around 400 V
Vg: Around 550 V
Black Vb: Around 400 V
Vg: Around 550 V
NO Go to next step.
State Confirm
→
Level History 1
(Tech. Rep. Mode)
2 Check ATDC data. — Go to next step.
3 AIDC output value is
around 4.5 V.
NO Clean AIDC Sensor.
Check Image Transfer Belt
for damage.
Level History data
check results
4 Low ATDC and low Vg
and Vb
YES Go to step 8.
5
Low ATDC and high Vg
and Vb
YES Go to step 14.
6
ATDC falling within spec-
ified range and low Vg
and Vb
YES Go to step 8.
7
ATDC falling within spec-
ifiedrangeandhighVg
and Vb
YES Go to step 14.
LPH Assy 8 LED retracting lever is
locked in position.
NO Slide out the IU and reinstall.
IU 9 Dirty on the outside. YES Clean.
LPH Assy 10 The surface of the lens
array is dirty.
YES Clean with cleaning jig.
ATDC Sensor win-
dow
11 The color ATDC Sensor
window on the LED Assy
is dirty.
YES Clean. Change ATDC.
Change IU.
4011T003AA