Olivetti d-color MF651, Service Manual, Page: 767 / 1053

Field Service Ver. 2.0 Jul. 2009 18. MALFUNCTION CODE
707
TROUBLESHOOTING
18.2 List
• If an image stabilization or scanner fault occurs, the corresponding warning code
appears.
Code Item Description
S-1 CCD gain adjustment failure • It is detected that the CCD clamp gain adjustment
value is faulty.
D-1 Split line detect • While recovering from the power save mode or when
the main/sub power switch is ON, it detects whether or
not stain exist at the original glass moving unit when
the ADF is closed.
This warning will be displayed if the original is set to
ADF when stain exist.
• The thin line detection level and the warning display
can be changed by the following setting.
[Service Mode]
o [System 2] o [Thin line Detect. Set-
ting]
D-2 Read guide trouble • While recovering from the power save mode or when
the main/sub power switch is ON, it detects whether or
not stain exist at the scanning guide when the ADF is
closed.
This warning will be displayed if the original is set to
ADF when stain exist.
• This setting is valid only when the [Detection during
Paper Passing] available from the following setting is
set to one between 2 and 6.
[Service Mode]
o
[System 2]
o
[This Line Detect. Set-
ting]
P-5 IDC sensor (front) failure • When adjusting the IDC sensor, output voltage
detected for all eight sample patterns are 4.3 V or
more.
• When adjustment is complete, sensor’s output voltage
with selected light intensity is 1.0 V or under.
• During image stabilization (gamma correction control),
detected output value for IDC sensor did not go below
threshold (half the value of what is detected by IDC
sensor on the belt surface) for three consecutive times
(position of the pattern end is not detected).
• During image stabilization (gamma correction control),
sensor’s output value of each color for hyper 0 grada-
tion after the primary approximation is half the detec-
tion level on the belt surface or under
P-28 IDC sensor (rear) failure
P-6 Cyan imaging unit failure • All density readings taken from the density pattern pro-
duced on the transfer belt are 1.0 g/m
2
(IDC sensor
photo receiver output) or less during max. density
adjustment (Vg/Vdc adjustment).
P-7 Magenta imaging unit failure
P-8 Yellow imaging unit failure
P-9 Black imaging unit failure
P-14 Skew correction trouble • The difference between the skew default position set-
ting value and the cumulative amount of skew adjust-
ment values goes over the predetermined value.
P-16 PC charge cleaning trouble 1 • Charging cleaner home sensor is not transmitted even
after the specified time has passed while the wire
cleaning material is moving forward.
Y110571-1 Service Manual