Boards
SM 6-7 D014/D015/D078/D079
Detailed
Descriptions
Operation Summary
The signals from the 3-line CCD, one line for each color (R, G, B) and 4 analog signals per
line (F_ODD, F_EVEN, L_ODD, L_EVEN), are sampled by the ASIC and converted to
digital signals in the 10-bit A/D converter. This is the first phase of processing the data
scanned from the original.
Lens Block Replacement
The controller stores the SBU settings. These values must be restored after the lens block
is replaced:
SP4008 Sub Scan Mag Sub Scan Magnification Adjustment
SP4010 Sub Scan Reg Sub Scan Registration Adjustment
SP4011 Main Scan Reg Main Scan Registration Adjustment
Before lens block replacement, enter the SP mode and note the settings of SP4800
001 to 003 (ARDF density adjustments for R, G, B).
After lens block replacement, do some copy samples with the ARDF, then check the
copies.
If the copies have background, change SP4800 001 to 003 to their previous settings,
or adjust until the background is acceptable.
These SP codes are also used to adjust the ARDF scanning density, if the scanning
densities of the ARDF and the platen mode are not the same.
SBU Test Mode
1. Use SP4907 (Set SBU Test Pattern) to select the pattern to print.
2. Touch "Copy Window" then press the Start key twice.