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FC-22 ADJUSTMENT 1 - 50 January 2000 © TOSHIBA TEC
1.5 Automatic Initialization of Image Quality Control
(1) At the time of unpacking
Prior to copy-image dimensional adjustment, perform the 05-879 “Automatic initialization of image
quality control” procedure.
(2) When any of the following parts is replaced, be sure to perform the 05-879 “Automatic initialization
of image quality control” procedure.
• Processing unit • Transfer belt unit • Photoconductive drum
• Laser optical unit • Image quality sensor • Developer material
Note: When performing automatic adjustment of gamma correction in addition, “Automatic initialization of
image quality control” should be done first.
(3) When performing automatic adjustment of gamma correction in cases other than the above ones,
do the 05-878 “Forced performing of image quality control” procedure before automatic gamma
value correction.
Code Adjustment item Content
878 Forced performing of <Procedure>
image quality control (1) While pressing [0] and [5] simultaneously, turn the power ON. ৎ
Adjustment mode
(2) Input [878] with digital keys and press [START].
(3) When the adjustment finishes normally, the copier will return to
the adjustment mode’s initial state.
If an abnormal condition has occurred, take appropriate action by
referring to “4. TROUBLESHOOTING”.
879 Automatic initialization of <Procedure>
image quality control (1) While pressing [0] and [5] simultaneously, turn the power ON. ৎ
Adjustment mode
(2) Input [879] with digital keys and press [START].
(3) When the adjustment finishes normally, the copier will return to
the adjustment mode’s initial state.
If an abnormal condition has occurred, take appropriate action by
referring to “4. TROUBLESHOOTING”.