Xerox WorkCentre 5790 Series Service Manual page 145

05-330A, 05-331A DADH Feed Sensor Failure RAP (35
ppm)
Initial Actions
WARNING
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Refer to GP 14. Disconnect the power cord. Electricity can cause
death or injury. Moving parts can cause injury.
• Make sure that the correct RAP is used. To identify the correct RAP to use, go to the
330, 05-331 DADH Feed Sensor Failure Entry RAP.
• Remove all documents from the DADH.
• Make sure that the customer is not using damaged documents. If the DADH damages the
documents, go to the 05F Damaged Documents RAP.
• Figure 1. Make sure that the feed sensor actuator is not damaged. If necessary, install a
new feed sensor, PL 5.15 Item 2.
• Figure 1. Check that the feed roll assembly is installed correctly, go to
• Figure 1. Make sure that the feed rolls are clean and rotate freely, refer to
essary, install a new feed roll assembly,
5.15 Item 21.
• Figure 2. Check the operation of the feed yoke. Make sure that the feed yoke shaft is
under the clip. Make sure that the feed yoke spring is connected to the feed assembly and
to the feed yoke.
• While the DADH feed solenoid is de-energized, make sure that the feed gates are locked
in the down position. Manually activate the DADH feed solenoid then make sure that the
feed gates move freely. Manually de-activate the DADH feed solenoid,
NOTE: The feed solenoid remains activated (after being energized) until the last docu-
ment has been fed. Then a reverse pulse de-actuates the armature to lift the nudger roll.
• Check the location of the feed solenoid spring. Make sure the spring is correctly located
on the solenoid armature.
• Clean the DADH feed sensor and the area around the sensor,
• Clean the takeaway rolls, PL 5.35 Item
Procedure
Open the DADH top cover. Remove the DADH rear cover,
interlock switch closed. Enter dC330 code 05-330 to check the DADH feed sensor, Q05-330.
Activate Q05-330. The display changes.
Y N
Go to Flag 1. Check Q05-330.
References:
• GP 11 How to Check a Sensor.
• P/J184 DADH PWB.
• 01D +3.3V Distribution RAP.
• The 3.3V return in the 01B 0V Distribution RAP.
Install new components as necessary:
• DADH feed sensor, PL 5.15 Item
• DADH PWB, PL 5.10 Item 5.
A
Xerox® WorkCentre® 5790 Family
REP 5.14.
ADJ 5.4. If nec-
PL 5.15 Item 1 or feed roll assembly cover,
PL 5.15 Item
PL 5.15 Item 2.
6. Refer to ADJ 5.4.
PL 5.10 Item 1. Hold the top cover
2.
A
Enter dC330 code 05-020 to run the DADH feed motor, MOT05-020. MOT05-020 runs.
Y N
Go to the 05D DADH Motor Failure RAP.
While MOT 05-020 runs, stack the code 05-025 to energize the DADH feed clutch, CL05-025.
NOTE: The feed clutch disengages after 30 seconds. The feed motor stops after 3 minutes.
CL05-025 energizes, the nudger rolls and the feed rolls rotate.
Y N
05-
Perform the steps that follow:
• Go to the 05E DADH Feed Clutch Failure RAP and check CL05-025.
• ADJ 5.1, DADH Drive Belt Adjustment.
Enter dC330 code 05-010 to energize the DADH feed solenoid, SOL05-010. The
assembly lowers, then raises after 10 seconds.
Y N
Go to Flag 2. Check SOL05-010.
References:
• GP 12 How to Check a Solenoid or Clutch.
PL
• P/J183, DADH PWB
• 01G +24V Distribution RAP.
• The 24V return in the
Install new components as necessary:
• DADH feed solenoid,
• DADH feed assembly,
5.
• DADH PWB, PL 5.10 Item
Perform the steps that follow:
• Check that the DADH feed sensor, Q05-330 is installed correctly. If necessary, install a
new feed roll assembly, PL 5.15 Item
• Ensure the feed motor drive belt and CVT motor drive belt are tensioned correctly,
5.1.
• When large documents are fed (A3 or 11x17 inch), check the following:
– The CVT motor rotates freely, refer to
– The CVT drive belt, refer to
– That the CVT roll is clean and rotates freely, refer to
NOTE: If necessary install a new CVT motor,
• Go to the 05E DADH Feed Clutch Failure RAP and check CL05-025.
• Make sure that the size of the documents are sensed correctly. Refer to the
ment Size Sensor Failure RAP.
May 2013
2-113
and P/J201.
01B 0V Distribution RAP.
PL 5.15 Item 5.
PL 5.15 Item 18.
5.
1.
05D DADH Motor Failure RAP
ADJ 5.1 DADH Drive Belt Adjustment.
ADJ 5.4.
PL 5.25 Item 9.
Status Indicator RAPs
05-330A, 05-331A
feed roll
ADJ
05C Docu-