Alert List - Konica Minolta bizhub C450 Service Manual

Field Service Ver. 1.0 Mar. 2005
16.2.1

Alert list

• If an image stabilization or Scanner fault occurs, the corresponding warning code
appears.
Code
S-1 CCD clamp gain adjustment failure
P-5 IDC Sensor (Front) failure
P-28 IDC Sensor (Back) failure
P-6 Cyan Imaging Unit failure
P-7 Magenta Imaging Unit failure
P-8 Yellow Imaging Unit failure
P-9 Black Imaging Unit failure
P-21 Color Shift Test Pattern failure
P-22 Color Shift Test Pattern failure
P-26 ATVC (K) failure
P-27 ATVC (2nd) failure
P-29 ATVC (color) failure
Color PC Drum Main Sensor mal-
P-30
function
K PC Drum Main Sensor malfunc-
P-31
tion
Item
• It is detected that the CCD clamp gain adjustment
value is faulty.
• The output from the photoreceiver of the IDC Sensor
that takes a reading of a point of a bare surface on the
Transfer Belt is 4.3 V or more during an adjustment of
the IDC Sensor.
• The output from the photoreceiver of the IDC Sensor
that takes a reading of a point in a toner pattern on the
Transfer Belt is 1.0 V or less after the adjustment has
been completed.
• All density readings taken from the density pattern pro-
duced on the Transfer Belt are 0.5 g/m
photoreceiver output) or less during max. density
adjustment (Vg/Vdc adjustment).
• The number of points detected in the main scan direc-
tion is more or less than the specified value during
main scan direction registration correction.
• The number of points detected in the Sub Scan Direc-
tion is more or less than the specified value during sub
scan direction registration correction.
• The color shift amount is greater than the specified
range during main scan direction registration correc-
tion.
• The color shift amount is greater than the specified
range during sub scan direction registration correction.
• The skew correction amount is greater than the speci-
fied value.
• An abnormal average value is detected during an
adjustment of the first image transfer ATVC value of
Black.
• An abnormal average value is detected during an
adjustment of the second image transfer ATVC value.
• An abnormal average value is detected during an
adjustment of the first image transfer ATVC value of
color.
• The output from the Color PC Drum Main and Sub Sen-
sors remains unchanged for a continuous period of
1,000 ms while the Color PC Drum Motor is turning sta-
bly and the Lock signal is active (LOW-0).
• The output from the Color PC Drum Main and Sub Sen-
sors remains unchanged for a continuous period of
1,000 ms while the K PC Motor is turning stably and the
Lock signal is active (LOW-0).
16. Malfunction code
Description
2 (IDC Sensor
319