Xerox WC5545F, Service Manual

Page: 975 / 2320

August 2007
2-783
WorkCentre 5687 Family
OF6, OF7
Status Indicator RAPs
OF6 Ozone and Air Systems RAP
Use this RAP to diagnose faulty machine fans. Faulty fans can cause smells or overheating.
Procedure
Identify the suspect fan. Check that the fan is working correctly.
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 PL
9.25 Item 1 and to Wiring Diagram 4.
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 PL 1.10 Item 1.
Image Processing Cooling Fan
This fan is located on the image processing module. This fan draws air into the Image Process-
ing module and blows the air onto the Image Processing PWB.
Refer to the information that follows:
• (32-55 ppm) PL 3.20 Item 2.
• (65-87 ppm) PL 3.10 Item 2.
• Wiring Diagram 10
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 and Wiring Diagram 5.
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, PL 8.11
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. The fans are turned on and off simultaneously and only
operate during 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 dC131 location 09-116. The fans are run in dC330 code
09-036 Duplex cooling fans.
Refer to cooling fan 1, cooling fan 2 and the thermistor in Wiring Diagram 7.
OF7 IOT PWB Diagnostics RAP
Purpose
To assist in identifying any suspected problems with the IOT PWB. If directed here from
another procedure always return to that procedure.
Perform the IOT PWB corruption check before a new IOT PWB is installed. If the fault still
occurs after completing this check then install a new IOT PWB.
Procedure
WARNING
Switch off the electricity to the machine, GP 14. Disconnect the power cord from the
customer supply while performing tasks that do not need electricity. Electricity can
cause death or injury. Moving parts can cause injury.
Perform the following checks:
• IOT NVM Corruption Check.
• IOT PWB Voltage Check.
• IOT PWB Communications Check.
Ensure the machine is in normal mode (not standby mode).
IOT NVM Corruption Check
Corruption of the IOT NVM can cause paper jams, fuser temperature or xerographic control
faults. Perform these steps before a new IOT PWB is installed.
Perform the steps that follow:
1. Enter dC131 location 09-271 Developer Age. Note the developer age value. Also check
when the developer was last changed, to ensure that the age value is correct.
2. Go to dC132 NVM initialization - Copier
3. Select Machine Variable NVM
4. Select Initialize.
5. Switch off the machine, then switch on the machine, GP 14. Check if the fault still occurs.
• If the fault does not occur, then go to step 6.
• If the fault still occurs, install a new IOT PWB, PL 1.10 Item 2.
6. Use the machine resident diskette to restore the NVM values, GP 5.
7. Enter dC131 location 09-271 Developer Age. Check that the value for the developer age
is correct, reset the value if required.
8. Perform SCP 6 Final Actions
IOT PWB Voltage Check
1. On the IOT PWB check that the voltage-present LEDs that follow are on, Figure 1:
• CR12 - Indicates the presence of 3.3V.
• CR13 - Indicates the presence of 5V.
• CR15 - Indicates the presence of 12V.
• CR16 - Indicates the presence of 24V.
• CR36 - Indicates the presence of 3.3V standby supply voltage.