Konica Minolta bizhub 500 Service Manual page 362

Field Service Ver.2.0 Jan. 2007
Classification Code
High C-2803
voltage
power
source
abnor-
C-2804
mality
Motor C-3201
speed
abnor-
mality
Fan C-3301
lock
abnor-
mality
C-3302
Fusing C-3501
high
temper-
ature
abnor-
mality
C-3502
Confidential – for internal use only, do not distribute
Causes
TCR output abnormality.
When the output ripple voltage of
the TCR sensor (TCRS) is less
than 0.5 V.
Toner density abnormality.
When the L detection output is in
excess of 2.6 V before the toner
remaining sensor (PZS) detects a
no toner condition, toner density
does not recover even when
toner is automatically supplied.
Fusing motor (M11) speed abnor-
mality.
When M11 is ON, an EM error
signal is detected 30 times in
succession within a specified
period of time.
Fusing cooling fan /Fr (FM2)
abnormality.
When FM2 is ON, an EM error
signal is detected 3 times in suc-
cession within a specified period
of time.
Fusing cooling fan /Rr (FM8)
abnormality.
When FM8 is ON, an EM error
signal is detected 3 times in suc-
cession within a specified period
of time.
Fusing main sensor high temper-
ature abnormality.
The thermistor /1 (TH1) detects a
temperature higher than 236 °C
for more than a specified period
of time.
Fusing sub sensor high tempera-
ture abnormality.
The thermistor /2 (TH2) detects a
temperature higher than 236 °C
for more than a specified period
of time.
13. MALFUNCTION CODE
Resulting Estimated abnormal parts
operation
The main body TCR sensor (TCRS)
stops immedi- Printer control board (PRCB)
ately to turn OFF
the main relay
(RL1).
Toner remaining sensor
(PZS)
TCR sensor (TCRS)
Printer control board (PRCB)
Fusing motor (M11)
Printer control board (PRCB)
Fusing cooling fan /Fr (FM2)
Printer control board (PRCB)
Fusing cooling fan /Rr (FM8)
Printer control board (PRCB)
The main body Thermistor /1 (TH1)
stops immedi- Printer control board (PRCB)
ately to turn OFF DC power supply (DCPS)
the main relay
(RL1). All the
keys are not
taken in.
Thermistor /2 (TH2)
Printer control board (PRCB)
DC power supply (DCPS)
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