Konica Minolta 7145 Service Manual page 372

ERROR CODE LIST
Classification Warning
code
Drum-area F22-1
abnormalities
F23-1
High F26-1
voltage
power
error F26-2
F26-3
F26-4
High F28-1
voltage
power
error
F28-2
3
Causes
Internal overheating
The temperature at the outside of
the drum reached or exceeded
136°F.
PCL connector detached
When the PCL was being turned
ON prior to the start of initial
charging, a PCL abnormality was
detected 15 times in a row at the
specified intervals after the speci-
fied period of time.
L detection data error
When the L detection output is
greater than 3.0V.
Abnormal output from TDS (Toner
density sensor)
Maximum TDS output voltage
failed to exceed 1.0V.
Abnormal output from TDS (Toner
density sensor)
TDS output ripple voltage failed
to reach 0.5V
Toner density abnormality
If L detection power exceeds
2.6V prior to toner out detection
by the TLD (Toner level sensor),
the automatic toner supply fea-
ture should restore the toner den-
sity. This error occurs if this
feature fails to restore the density.
Charging abnormality
When the EM signal (charge_em
1) is detected 5 times at the spec-
ified intervals.
Transfer lightning abnormality
When the EM signal (trans_em) is
detected 3 times at the specified
intervals, this phenomenon
occurs 5 times in 1 job.
Resulting
operation
If any copying
operation is
being made,
stop the main
body after
completion of
paper exit.
Turn the RL1
(Main) off.
The main
body stops
immediately,
and the RL1
(Main) turn
OFF.
4-40
Estimated abnormal parts
TCSB (Toner control sensor board)
FM4 (Internal cooling fan/1)
FM7 (Internal cooling fan/2)
(7145 only)
PCL (Pre-charging exposure
lamp) connector
CB (Main body control board)
TDS (Toner density sensor)
CB (Main body control board)
TLD (Toner level sensor)
Toner supply unit
Load the toner bottle again
Charging corona
HV (High voltage power)
CB (Main body control board)
Transfer corona section
HV (High voltage power)
CB (Main body control board)