Ricoh FT4460, Service Manual, Page: 242 / 413

28 February 1989
1.18 APS LENGTH SENSOR ERROR CORRECTION (SP
Modes #50 and #46)
1. Place a sheet of A3 (LDG) size paper on the exposure glass.
2. Remove the DIP SW cover [A] and turn DIP switch 1 - 4 ON.
3. Set the APS length sensor checking mode with the numeric keys (SP
Mode #50).
NOTE: A3 = 420mm and LDG = 432mm.
4. If the length is incorrect, set the APS length sensor error correcting mode
(SP Mode #46) using the numeric keys. (The original length is displayed
in “mm”.)
5. The setting value is displayed in the magnification indicator (blinking).
6. Change the value with the numeric keys and correct the error.
• Width adjustments are in steps of 1mm. The mode standard set-
ting is “8” and adjustment are made from “0” (-8mm) to “15“
(+7mm).
7. Set to APS length sensor checking mode again and confirm the original
length. (Scan three times or more.)
• Standard Value: Original length ± 3mm
NOTE: Adjustment is required when the I/O control PCB and/or the
scanner motor are replaced.
5-26