Xerox WorkCentre 5790 Series Service Manual page 685

OF6 Ozone and Air Systems RAP
Use this RAP to diagnose faulty machine fans. Faulty fans can cause smells or overheating.
Procedure
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.
Identify the suspect fan. Check that the fan is working correctly:
• Photoreceptor Fan
• Ozone Fan
• Power and Control Assembly Fan
• Single Board Controller Cooling Fan
• Vacuum Transport Fan
• Duplex Paper Path Cooling Fans
Photoreceptor Fan
This fan draws air in at the rear of the machine and uses a duct to direct the air flow over the
ROS, through the photoreceptor module and over the post fuser area. If the fan is suspect, go
to the 09C Photoreceptor Fan RAP.
Ozone Fan
This fan draws air from the photoreceptor module and out through the ozone filter. Refer to
9.25 Item 1 and to Wiring Diagram 6.
If the components of this system are not in a good condition, ozone will not be removed from
the xerographic area and deletions with shortened xerographic module life can be expected.
Check the following:
• Check that the ozone seal on the rear face of the short paper path is in a good condition,
if necessary install a new seal, PL 31.10 Item 6
• Check that the ozone seal on the front face of the main drive module is in a good condi-
tion, if necessary install a new seal,
• Enter dC330 code 09-030 to run the ozone fan. If the fan does not run, refer to
gram 6, if necessary install a new ozone fan,
• Check that the ozone filter is not blocked, if necessary install a new ozone filter
Item 3.
Power and Control Assembly Fan
This fan draws in air from the rear of the machine and blows it into the power supply. The fan is
hard wired into the power supply. Refer to
Single Board Controller Cooling Fan
This fan is located within the single board controller PWB module. This fan draws air into the
single board controller PWB module and blows the air onto the single board controller PWB.
Refer to the information that follows:
• Single board controller PWB, PL 3.24 Item
• Wiring Diagram 3.
Xerox® WorkCentre® 5790 Family
WARNING
seal replacement kit.
PL 31.10 Item 6 seal replacement kit.
PL 9.25 Item 1.
PL 1.10 Item 1.
3.
Vacuum Transport Fan
This fan draws air down through the short paper path to assist the transport of A6 paper. Refer
to PL 10.25 Item 1 short paper path (W/O
Duplex Paper Path Cooling Fans
This consists of a cooling fan, exhaust fan and a cooling duct assembly, all of which are inte-
grated into the front door. The cooling fan 2 is located in the middle of the front door,
Item 6. This fan draws in air via the cooling duct into the front door and directs the air across
the duplex transport area and into the image exit area. The cooling fan 1 is located in the front
door, PL 8.11 Item 3. This fan draws air from the inverter base pan area and exhausts the air
via the cooling duct in the front door.
W/O TAG 120 machines. The fans are turned on and off simultaneously and only operate dur-
ing the duplex mode. A thermistor is located in the inverter assembly which will switch the fans
on when the temperature reaches 48 degrees C (119 degrees F) during a duplex job. If the
thermistor fails, then the fans will switch on at the start of a duplex job.
The fans are enabled or disabled in
09-036 Duplex cooling fans.
W/TAG 120 machines. There is no thermistor on the inverter assembly. Consequently, there is
no thermistor control for cooling fan 1 or cooling fan 2. The fans are turned on only when the
green start button is pressed or a print is sent to the machine.
PL
NOTE: On 65-90 ppm machines
Refer to cooling fan 1, cooling fan 2 and the thermistor in
Wiring Dia-
PL 9.25
May 2013
2-653
TAG 114) and Wiring Diagram 7.
dC131 location 09-116. The fans are run in
W/TAG 120 there is no inverter thermistor.
Wiring Diagram 11.
Status Indicator RAPs
PL 8.11
dC330 code
OF6