P-21 (bizhub C750i)
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Contents
| Malfunction type | Color regist test pattern failure |
| Malfunction code | P-21 |
| Malfunction detection timing | -During pre-pattern detection, pre-pattern edge (start/ end point of effective area) is not detected within the pre-pattern search area. -During detection of regist pattern at vertical/horizontal direction, pattern edge (start/end point of effective area) is not detected within the pattern search area of each unit. |
| Relevant parts | -Transfer belt unit -PH unit -Expansion control board (EXCB) -Base board (BASEB) |
Procedure
- Wipe clean the surface of the transfer belt with a soft cloth, if it is dirty.
- Replace the transfer belt unit if the transfer belt is damaged. (Part# AA2JR73100)
- Replace the PH unit. (Part# ACKNR70100)
- Replace EXCB. (Part# AA7NH00500)
- Replace BASEB. (Part# ACKNH02101)