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4026-0XX
Diagnostic Information 2-29
2
Paper Lift
Plate Assem-
bly
Check the lift plate assembly, release button,
button spring, release arm and all related hard-
ware for proper operation. Be sure the lift plate
D-roll pad mounted on the top of the lift plate is
not worn, contaminated or missing. Repair as
necessary.
3
Paper Empty
Sensor Flag
Check the paper sensor flag for damage and
proper operation. Repair or replace as neces-
sary.
4
Paper Empty
Sensor
Be sure the voltage at CN9-4 on the engine
board is between +4.5 V dc and +5.5 V dc. If
incorrect, replace the engine board. If correct,
check the voltage at CN9-6. The voltage
changes from approximately +2.00 V dc to 0 V
dc as you manually move the sensor flag in and
out of the sensor. If incorrect, be sure tray two
cable measures continuity. If incorrect, replace
the cable. If correct, replace the tray two sensor
board.
5
Second
Paper Tray
Solenoid/
Engine
Board/Sole-
noid Cable/
Tray Two
Cable
Be sure the solenoid cable is connected to the
paper sensor board cable and the cable is prop-
erly connected to the sensor board.
Disconnect CN9 at the engine board. The volt-
age measures approximately +24 V dc at
CN9-1. If incorrect, replace the engine board. If
correct, reconnect CN9 and measure the volt-
age again at CN9-1. If the voltage continues to
be incorrect, check the resistance of the sole-
noid at the solenoid cable connector which mea-
sures from 60 to 90 ohms. If incorrect, replace
the tray two solenoid. If correct, be sure the
solenoid to sensor board cable measures conti-
nuity. If incorrect, replace the sensor board and
cable assembly. If correct, be sure the tray two
to engine board cable measures continuity. If
incorrect, replace the cable. If correct, replace
the tray two sensor board.
FRU Action