给你参考一下吧： 详细内容自己看看，太长不翻译了
073-105 Regi Sensor ON Jam (Tray 3)
Bsd-on:CH8.11
Paper from Tray 3 does not turn ON Regi Sensor within a spec time.
DC330 Code to Check
[077-104] Regi Sensor
[077-004] Pre Regi Motor
Check Items
Paper Path for a foreign object/burr/piece of paper
Pre Regi Roll for dirt/paper particles/wear/a poor rotation
Drive gears for wear/breakage
Check for out-of-spec paper.
Drawer Connectors P/J601 contact point for foreign objects/bent pins/burnout
Check the wire-wound resistance of Pre Regi Motor is approx. 0.8 ohm at the measurement points.
P229-2 pin to pins 1/3
P229-5 pin to pins 4/6
Check the following for an open wire or poor contact:
Regi Sensor J122-2 to IOT PWB J439-B11
Regi Sensor J122-1 to IOT PWB J439-B12
Regi Sensor J122-3 to IOT PWB J439-B10
If the above wires are good, replace Regi Sensor (PL 13.4) and Flexible Print Cable (PL 2.1) in order.
If the results of the above checks are OK, replace IOT PWB (PL 2.1) and MCU PWB (PL 2.1) in order.