Troubleshooting and Diagnostics
Display
That means...
Measure
6-9
71 TPS ERROR
n
Toner Patch Sensor face
is not ok;
n
=
4 Not enough toner; the
toner adjustment does
not work correctly.
8 TP too light; unable to
continue printing.
32 TP too dark; unable to
continue printing.
24 = 71 TPS ERROR 8
and/or 16 TONER
LOW
48 = 71 TPS ERROR 8
and/or 16 TONER
LOW
One of these error
messages (most 4, 8, or 32)
can indicate a hardware
malfunction but might also
be caused by toner
contamination on the surface
of the TP sensor.
-
Remove the PC-
Cartridge off the printer
and turn it.
-
Clean the sensor´s
surface by means of the
cleaning pen (see
Paragraph
5.5.7
Cleaning of the TP
Sensor
).
Be careful not to scratch
the drum.
Note:
Do not expose the drum
to light any longer than
necessary.
-
See above and order
toner
-
See above and order
toner
If error still there call service
Troubleshooting and Diagnostics
Display
That means...
Measure
*) After replacing the Developer Unit, the PC Cartridge, or the Fuser Unit
the Reset functions (CONFIG MENU
º
BASIC SETTINGS) have to be
called up.
Remove all transportation locks before replacing the units.
6-10
72 TPS LEVEL SHIFT
Toner Patch Sensor is
dirty
or
OPC has background
Clean the sensor´s surface
by means of the cleaning
pen (see Paragraph
5.5.7
Cleaning of the TP
Sensor
).
Be careful not to scratch the
drum (see figure below).
Do not expose the drum to
light any longer than
necessary.
Check OPC surface, if
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;
n
=
8 ATDC too light
32 ATDC too dark
open and close front cover, if
error still there exchange
Developer (see Paragraph
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.