Xerox DocuColor 12/DCCS50 User Manual

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2-160
DocuColor 12/DCCS50
10-366 Heat Roll Control Thermistor Overheat Failure
Reissue
Status Indicator RAPs
10-366 Heat Roll Control Thermistor Overheat Failure RAP
The Heat Roll Control Thermistor detected a temperature in excess of 230° C (446° F) on the
Heat Roll.
NOTE: This status code is stored in NVM location 777-160 and cannot be
reset by Power Off/
Power On. To reset this code, enter Diagnostics and change the value in NVM location 777-
160 Fuser Over heating Failure from 1 to 0.
Initial Actions
Refer to BSD 10.2 and 10.12 for the following procedure.
• Open the Drawer and extend it to the service position. Perform the following:
– Remove the Oil Cartridge (PL 8.
1).
– Remove the Front Cover (PL 8.1).
–
Remove the Top Cover (PL 8.2).
• Check the Heat Roll Control Thermistor for cleanliness, damage and excessive wear at
the point
where the Thermistor contacts the Heat Roll. If the surface of the Thermistor is
worn, replace the Heat Roll Control Thermistor (PL 8.4). Inspect the surface of the Heat
Roll for excessive wear due to the Thermistor. Replace the Heat Roll if necessary (PL
8.3).
Procedure
NOTE: Prior to replacing a component, disconnect the connectors to the component (Heat Roll
Control Thermistor and IOT Drive PWB). Check the connectors for broken, bent and dirty pins.
disconnect and reconnect the connectors several times to remove contaminants due to oxida-
tion.
Ensure NVM location 777-160 is reset to 0. Switch off the power. Cheat the Front Door Inter-
lock Switch. Disconnect P/
J171 on t
he Heat Roll Control Thermistor. The resistance of the
Thermistor should be in the range of 0.78K Ohms when hot, to 150K Ohms when cool (room
temperature). The resistance is in specification.
YN
Replace the Heat Roll Control Thermistor (PL 8.4).
Reconnect the connector. Close the Drawer. Switch on the power. The 10-366 fault is
d
ecl
ared immediately after self-test completes.
YN
Switch off the power. Check the voltage at P/
J10
5-4 on the SSR and GND. Switch on the
power. There is 0 VDC present when self-test completes.
YN
The voltage at P/
J105-4 in
creases to approximately +4.3 VDC within 12 min-
utes.
YN
Replace the IOT Drive PWB (PL 9.
2).
T
he Heater Rod remains illuminated while P/J105-4 sti
ll reads approximately
+4.3 VDC.
YN
This indicates that the problem is intermittent. Replace the Heat Roll Control
T
hermist
or (PL 8.4).
Replace the SSR (PL 9.3).
Go to Flag 9 (Fl
ag 19 w/ TAG P31) on BSD 10.2 and check the harness for a short circuit
to ground. If OK, replace the IOT Drive PWB (PL 9.2).
Go to Flag 3 on BSD 10.2 and check for a short circuit to ground between P/
J171-1 and P/
J413A-7 If OK, replace the Heat Roll Control Thermistor (PL 8.4). If the problem continues,
replace the IOT Drive PWB (PL 9.2).
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Xerox DocuColor 12/DCCS50 Specifications

General

Brand	Xerox
Model	DocuColor 12/DCCS50
Category	All in One Printer
Language	English