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Diagnostic Information 2-18
4040 Finisher
Tray Height Service Check
FRU Action
1 Connectors Be sure J5, J7, and J12 are properly connected to
the finisher driver board.
2TrayHome
Position
Sensor, PI-8
(3-10)
Measure the voltage between J12-5 and J12-6 on
thefinisherdriverboard.Ifitisnot5Vwiththetray
in the home position, or 0 V in the other positions,
replace the tray home position sensor
(PN 11D0071).
3 Tray Upper
Limit Detection
Switch, MS-5
(3-33)
Unplug J5 from the finisher driver board. Measure
the resistance between J5-7 and J5-8 on the switch
side. If it is not 0 Ohms, replace the tray upper limit
detection switch (PN 11D0064).
4 Safety Range
Detection
Switch, MS-3
(3-36)
Measure the voltage between J5-1 and J5-5/ -6 on
the finisher driver board. Raise the tray until it clicks
two or three times. If the voltage does not change
from 24 V to 0 V or from 18 V to 24 V, replace the
safety range detection switch (PN 11D0068).
Ifthereisstillaproblem,gotothe“Tray Elevation
Motor Service Check” on page 2-17.