Olivetti d-color MF651, Service Manual, Page: 793 / 1053

Field Service Ver. 2.0 Jul. 2009 19. TROUBLE CODE
733
TROUBLESHOOTING
C6102 Drive system home
sensor malfunction
• The scanner home sensor is unable to
detect the scanner located at its home posi-
tion.
• The scanner home sensor is unable to
detect a scanner even when the scanner
motor has been driven to move the scanner
over the maximum travelling distance.
• The scanner home sensor detects the scan-
ner when the scanner has moved the maxi-
mum travelling distance from the position, at
which it blocks the scanner home sensor.
Scanner B
C6103 Slider over running • The scanner home sensor detects the scan-
ner at its home position during a period of
time that begins with the time when a pre-
scan command and a scan preparation
command are executed and ends when a
home return command is executed.
B
C6301 Optical cooling fan
motor’s failure to turn
• The fan lock signal remains HIGH for a pre-
determined continuous period of time while
the motor remains stationary.
B
C6704 Image input time out • Image data is not input from the image pro-
cessing board (IPB) to the printer control
board (PRCB).
C
C6751 CCD clamp/gain
adjustment failure
• The adjustment value is 0 or 255 during a
CCD clamp adjustment.
• The peak value of the output data is 64 or
less during a CCD gain adjustment.
B
C6752 ASIC clock input error
(front side)
• When starting the scanner, verification on
reading and writing the predetermined value
for image processing ASIC on CCD board
was conducted, and verification failure was
detected.
 C
C6753 ASIC clock input error
(back side)

C
C6901 DSC board mount failure
1
• When MFP detects that DSC board is not
properly installed.
 C
C6902 DSC Bus check NG1-1 • When DSC bus check detects an error.

C
C6903 DSC Bus check NG1-2  C
C6911 Undetectable
C6912
C6913
C6F01 Scanner sequence
trouble 1
• The original transport interval becomes
shorter than the designed value due to an
original transport control error in original
reading in ADF.
Scanner C
C6F02 Reserved
C6F03 Reserved
C6F04 Reserved
C6F05 Reserved
C6F06 Reserved
C6F07 Reserved
Code Item Detection timing
Trouble iso-
lation
Rank
Y110571-1 Service Manual