Nikon Super CoolScan 9000ED Repair Manual page 47

＊ Illumination irregularity
・Select "Run" on the main menu and choose "Illumination Irregularity" from the pulldown menu.
・Check if there is no problem with R, G, B,I waveforms.
Inspection result on
illumination irregularity
Inspection result on Illumination irregularity
In the above screen, the CCD sensor addresses are allocated on the horizontal axis. If foreign matter such as dust
enters between the LED illuminator and CCD sensor, the waveform of the address shifts significantly downward, so
dust, etc, can be recognized by visual check. Illumination irregularity: Standard 42% or less
In case of NG, clean the optical system.
- A34 ･ -
LS-9000
VRA51701-R.3607.A