Xerox WorkCentre 5790 Series, Service Manual

Page: 154 / 1610

May 2013
2-122 Xerox® WorkCentre® 5790 Family
05-345, 05-346
Status Indicator RAPs
05-345, 05-346 DADH Exit Sensor Failure RAP
05-345 The DADH exit sensor does not detect the lead edge of the document within the correct
time in the forward mode.
05-346 The DADH exit sensor does not detect the trail edge of the document within the correct
time in the forward mode.
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.
• Remove all documents from the DADH exit tray. Raise the DADH, remove all documents
that are wound around the CVT roll.
• Figure 1 . Make sure that the exit sensor actuator is not damaged. If necessary, install a
new exit sensor, PL 5.30 Item 2 .
• Make sure that the customer has set the document width guides correctly.
Procedure
NOTE: On 35 ppm machines, the DADH exit sensor is actuated by a flag. On 40-90 ppm
machines, the DADH exit sensor is a reflective type sensor.
Enter dC330 code 05-345 to check the DADH exit sensor, Q05-345, Figure 1 . Raise the
DADH. Activate Q05-345. The display changes.
Y
N
Go to
Flag 1 . Check Q05-345.
References:
• GP 11 How to Check a Sensor.
• P/J189 , DADH PWB .
• (35 ppm) 01D +3.3 Distribution RAP.
• (35 ppm) 01B 0V Distribution RAP, refer to the 3.3V return.
• (40-90 ppm) 01E +5V Distribution RAP.
• (40-90 ppm) 01B 0V Distribution RAP, refer to the 5V return.
Install new components as necessary:
• DADH exit sensor, PL 5.30 Item 2 .
• DADH PWB, PL 5.10 Item 5 .
Close the DADH. Open the DADH top cover. Remove the DADH rear cover, PL 5.10 Item 1 .
Hold the top cover interlock switch closed. Enter dC330 code 05-030 to run the DADH CVT
motor, MOT05-030, Figure 2 . MOT05-030 runs.
Y N
Go to the
05D DADH Motor Failure RAP.
The CVT roll rotates.
Y
N
Perform the steps that follow:
• Check the CVT motor drive belt, PL 5.25 Item 11 .
• Check the CVT motor tension spring. Check the CVT motor drive belt tension, ADJ
5.1 .
• Check the CVT roll pulley, refer to GP 7 .
If necessary, install a new DADH CVT roll, PL 5.25 Item 5 .
NOTE: The exit roll idlers remain lowered for 30 seconds.
Enter dC330 code 05-050 to energize the DADH duplex solenoid, SOL05-050, to lower the exit
roll idlers Figure 3 . The exit roll idlers lower.
Y N
Perform the steps that follow:
• Go to Flag 2 . Check SOL050-050.
References:
– GP 12 How to Check a Solenoid or Clutch.
– P/J181 , DADH PWB and P/J205.
– 01D +3.3V Distribution RAP.
– 01B 0V Distribution RAP, refer to the 3.3V return.
• Check the baffle assembly link arm, PL 5.30 Item 13 . Make sure that the link arm is
connected correctly to the DADH duplex solenoid, refer to REP 5.5 .
Install new components as necessary:
• DADH duplex solenoid, PL 5.30 Item 4 .
• DADH PWB, PL 5.10 Item 5 .
• Baffle assembly, PL 5.30 Item 5 .
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.
The exit roll rotates.
Y
N
Perform the steps that follow:
• Check the feed motor drive belt, PL 5.35 Item 5 .
• Check the feed motor tension spring. Check the feed motor drive belt tension, ADJ
5.1 .
• Check the exit roll and pulley, PL 5.35 Item 6 and PL 5.35 Item 15 , refer to GP 7 .
If necessary, install a new DADH input tray assembly, PL 5.35 Item 1 .
The fault only occurs in duplex mode.
Y
N
Go to
Final Actions .
NOTE: During normal operation, the exit roll idlers remain raised (closed) in simplex mode. In
duplex mode, the exit roll idlers remain raised unless the document is longer than 280mm (11
inches). The exit roll idlers raise and lower while feeding longer documents in duplex mode.
Exit the diagnostics mode. Close the DADH top cover. Make two copies in duplex mode.
Check that the second document is held in the feed rolls until the first document is fed into the
output tray. The feed rolls held the second document.
A
A