Xerox DOCUPRINT N17 Service Manual page 555

12.6.8 Tray Ready Switch
1. Disconnect the AC power and remove the rear access cover..
2. Disconnect P/J8. Measure the resistance between pins 5 and 6 on the
disconnected plug. The resistance is 0 (zero) ohms with the feeder
drawer closed, and infinite with the drawer open.
Y: Go to step 3.
N: Check the switch associated wiring. If OK, replace the Tray
Ready Switch (12.2.4).
3. Replace the Controller PWB (12.2.3).
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J5
J2
J1
J3
J8
J7
J9
Denotes Pin #1
RAP_01
High Capacity Feeder Option
J6
J4