Konica Minolta 8050 Service Manual page 306

ERROR CODE LIST
Classification Abnormality
code
LT up/ F18-50
down
motor
abnor-
mality
F18-51
LT paper F18-60
feed assist
fan abnor-
mality
F18-61
LT F18-70
power
abnor-
F18-71
mality
Commu- F20-10
nication
abnor-
mality
F20-11
F20-12
2
KONICA MINOLTA 8050/CF5001/C500/8150 Field Service Ver.3.0 Dec. 2004
Causes
When the up/down motor
(M100) was ON, M100 abnor-
mality detection signal was
continuously detected for the
specified time.
When the upper limit sensor
(PS109) or lower limit sensor
(PS101) is OFF, PS101 or
PS109 is not turned ON within
the specified time after the up/
down motor (M100) is turned
ON.
When the paper feed assist fan
/R (M137) was ON, M137
abnormality detection signal
was continuously detected for
the specified time.
When the paper feed assist fan
/F (M136) was ON, M136
abnormality detection signal
was continuously detected for
the specified time.
24VDC is not supplied to LCT.
12VDC is not supplied to LCT.
Communication abnormality
between printer control board
(PRCB) and drum drive board /
Y (DRDB /Y) or drum drive
board /M (DRDB /M).
Communication abnormality
between printer control board
(PRCB) and drum drive board /
C (DRDB /C) or drum drive
board /K (DRDB /K).
Communication abnormality
between printer control board
(PRCB) and transfer belt motor
(M18)
Resulting
operation
Main body LT drive board (LTDB)
stops immedi- UP/DOWN motor (M100)
ately and main
relay (RL1) is
turned OFF.
LT drive board (LTDB)
UP/DOWN motor (M100)
Upper limit sensor (PS109)
Lower limit sensor (PS101)
LT drive board (LTDB)
Paper feed assist fan /R (M137)
LT drive board (LTDB)
Paper feed assist fan /F (M136)
DC power unit /2 (DCPS2)
LT drive board (LTDB)
DC power unit /1 (DCPS1)
LT drive board (LTDB)
Printer control board (PRCB)
Drum drive board /Y (DRDB /Y)
Drum drive board /M (DRDB /M)
Printer control board (PRCB)
Drum drive board /C (DRDB /C)
Drum drive board /K (DRDB /K)
Printer control board (PRCB)
Transfer belt motor (M18)
5-2
Estimated abnormal parts