Konica Minolta 7020 Service Manual page 330

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LIST OF WARNING (ERROR) CODES
1
Warning
Classification
Scanner
abnormalities
Image
processing
abnormalities
F46-10
Causes
code
F40-1 Communication error at optics CPU
SRGA error (bad parity, overrun, or
framing error in received data) or by
transmission timeout [100ms].
F40-9 Communication error at optics CPU
SRGA error (protocol error in
receive control signal [SREQ,
SACK]).
F41-1 M2 (optical drive) drive error
Occurs at exposure unit initial
search or at exposure unit return
scan if PS14 (optics home-position)
fails to turn ON within a
predetermined time.
F43-1 L1 (exposure lamp) error
Occurs if L1 error signal is detected
continuously for 500msec (excluding
first 500msec after L1 ON).
Laser-driver error
F46-1
Caused by overcurrent in laser
output.
F46-8 Laser index error
Occurs if index period is different
from expected value.
AOC error
AOC counter overflow
Resulting
Correction
operation
If copying is in Switch SW2
progress, the (sub power
main body switch)
stops OFF/ON.
immediately,
and the main
relay and 24V
power turn
OFF.
Scanner stops
immediately.
8-36
Estimated abnormal parts
SCDB (scanner drive board)
M2 (optical drive)
SCDB (scanner drive board)
L1 (exposure lamp)
Laser diode
LDB (laser drive board)
CB (overall control board)
INDEX (index sensor board)
M5 (polygon)
Laser route
CB (overall control board)
ADB (A/D conversion board)
L1 (exposure lamp)
INV1 (exposure lamp inverter)
Exposure unit stop position
CB (overall control board)