PSI PP4050 XP - Page 131

Troubleshooting and Diagnostics
Display
That means...
Measure
*)
After replacing the Developer Unit, the PC Cartridge, or the Fuser Unit
the Reset functions (CONFIG MENU

BASIC SETTINGS) have to be
called up.
Remove all transportation locks before replacing the units.
6-9
72 TPS LEVEL SHIFT
Toner Patch Sensor is
Clean the sensor´s surface
dirty
by means of the cleaning
or
the drum (see figure below).
OPC has background
Check OPC surface, if
pen (see Paragraph
5.5.7
Cleaning of the TP
Sensor
).
Be careful not to scratch
Do not expose the drum to
light any longer than
necessary.
background is not ok
replace the OPC (see
Paragraph
5.4
Replacement of the PC
Cartridge (OPC)
) *)
73 ATDC ERROR
n
ATDC Sensor is dirty;
open and close front cover,
n
=
if error still there exchange
8
ATDC too light
Developer (see Paragraph
32
ATDC too dark
5.2.1 Replacing the
Developer Unit
) *)
74 CLEAN TPS
Toner Patch Sensor dirty
Open the housing, clean
the sensor´s surface
by means of the cleaning
pen (see Paragraph
5.5.7
Cleaning of the TP
Sensor
). Close the housing
Be careful not to scratch
the drum (see figure below).
Do not expose the drum to
light any longer than
necessary.
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