Xerox WorkCentre 5790 Series Service Manual page 624

• Clicking.
Possible causes are:
– The waste toner auger clutch slipping. This clutch is designed to slip to prevent dam-
age to the auger gear box if toner backs up in the waste pipe.
– Drive belt slipping on gear/pulley of the short paper path, W/O
Solution:
– Remove the waste toner bottle and clean the toner from the waste pipe and the
auger system. Refer to REP 9.10
– Install a new drives module, (35-55 ppm),
1.
– Install a new intermediate drive belt,
DADH
Run the following components:
• Enter dC330 code 05-030 DADH CVT motor to rotate the DADH CVT roll,
• Enter dC330 code 05-020 feed motor, to run the DADH takeaway rolls,
• Enter dC330 code 05-020 and add code 05-025 feed solenoid, to energize the feed
clutch, (35 ppm) PL 5.15 Item 9 or (40-90 ppm)
Possible causes and potential solutions are:
• Excessive noise from the DADH when duplex documents are being recirculated for
copying the second side.
Possible causes are:
– The DADH speeds up during second side recirculation when in duplex mode.
Solution:
– Switch off the acceleration in duplex mode. Set
Dup Motor Spd to 1.
NOTE: The default value for dC131
• Grinding noise.
Possible causes are:
– The intermediate feed bearing, (35 ppm)
Item 22 can stick, preventing the feed roll from free wheeling as the document is
transported by takeaway roll.
– Large flat spots, confined to one or two areas on the retard roll, which causes feed
noise and an increase in 05-330, 05-331and 05-335 jams.
Solution:
– Install a new the feed assembly, (35 ppm)
Item 18.
• Noise from the DADH input tray.
Possible causes are:
– Document guides.
Solution:
– Clean the DADH input tray in the area below the input guides with antistatic fluid,
26.10 Item 19.
• Squeaks from the DADH.
Status Indicator RAPs
OF1
TAG 114.
Auger Damper.
PL 4.15 Item 1, (65-90 ppm), PL 4.10 Item
PL 10.25 Item 10.
PL 5.25 Item
PL 5.35 Item
PL 5.17 Item 9.
dC131 NVM location 05-012 DADH
NVM location 05-012 DADH Dup Motor Spd is 0.
PL 5.15 Item 22 or (40-90 ppm)
PL 5.15 Item 18 or (40-90 ppm)
Possible causes are:
– DADH exit roll assembly or takeaway roll assembly,
Solution:
– Remove and clean the shafts and plastic bushes with antistatic fluid,
19.
• Knocking noise.
Possible causes are:
– The feed motor and CVT motor are not tensioned correctly, causing the drive belts to
slip.
Solution:
– Adjust the DADH drive belts,
• Gear rattle.
Possible causes are:
5.
– A loose meshing of the feed clutch and motor gears (35 ppm)
5.15 Item 16 or (40-90 ppm)
6.
Solution:
– Adjust the DADH drive belts,
ROS
Run the following components:
• Enter dC330 code 06-020 ROS motor, to drive the ROS motor at normal run speed,
6.10 Item 4.
• Enter dC330 code 06-025 ROS motor, to drive the ROS motor at standby speed,
Item 4.
The ROS gives out a whining noise of a ascending frequency for a duration between 5 and 6
seconds. The whining noise is the normal sound of the ROS motor accelerating.
Tray 1 and 2 Assembly
Remove tray 1 and tray 2 and run the following components:
• Enter code dC330 code 08-010 T1 Feed Motor, to run the tray 1 feed motor,
PL 5.17
6.
• Enter code dC330 code 08-020 T2 Feed Motor, to run the tray 2 feed motor,
6.
• Open left hand door.
Enter dC330 code 08-025 Tray 1 and 2 Transport Motor, to run tray 1 and tray 2 transport
rolls, PL 8.25 Item 8.
PL 5.17
Possible causes and potential solutions are:
• Squeaks.
Possible causes are:
– Contamination of the drive shafts and bearings.
– Incorrectly adjusted or worn drive belts.
– Incorrectly aligned or damaged parts.
PL
Solution:
– Remove and clean the drive shafts, bearings and then lubricate. Refer to
Machine Lubrication.
– Check for parts that are damaged or out of position.
May 2013
2-592
PL 5.35 Item 6.
ADJ 5.1.
PL 5.15 Item 9
PL 5.17 Item 9 and PL 5.17 Item 16.
ADJ 5.1.
Xerox® WorkCentre® 5790 Family
PL 26.10 Item
and PL
PL
PL 6.10
PL 8.26 Item
PL 8.26 Item
ADJ 4.1