Ll-44 Fuser Too Hot Rap - Xerox 8825 Service Manual

LL-44 Fuser Too Hot RAP

NOTE: Refer to BSD 10.1 while using this RAP.
Dangerous Voltage
LL-44 is displayed when the Fuser temperature exceeds 420º F (216º C), the maximum
allowed temperature.
The status code may also be displayed if the Temperature Limit Thermistor, A23RT2, has a
malfunction or is contaminated.
Initial Actions
Switch off the printer and allow the fuser to cool. Switch on the printer. If the problem still exists,
perform the following procedure.
Procedure
Check the Fuser Triac, A1Q1, as follows:
1. Switch off the printer and disconnect the Power Cord.
2. Disconnect the BLU and WHT wires from the Fuser Triac, A1Q1
3. Set the meter to measure 2K ohms.
4. Measure the resistance across the Fuser Triac connections from which the wires were
removed.
The resistance is infinite.
Y N
Replace the Fuser Triac, A1Q1, PL
Measure the resistance from each of the Fuser Triac connections from which the wires were
removed from the ground. The resistance is infinite.
Y N
Replace the Fuser Triac, A1Q1, PL
Disconnect A2P201 from the Driver PWB A2J201. Set the meter to measure 5 VDC. Connect
the (+) meter lead to the Driver PWB A2J2-9 and the (-) meter lead to A2J2-10. There is +5
VDC present.
Y N
Replace the Driver PWB, A2, PL 1.1A.
Check the YEL and GRN wires between the Temperature Limit Thermistor and the Driver
PWB, A2, for continuity and for a short to ground. The wires are OK.
Y N
Repair the wires.
Replace the Thermistor Pad Assembly, PL
Status Indicator RAPs
LL-44 Fuser Too Hot RAP
WARNING
1.2A.
1.2A.
10.4.
01/02
2-8 8825/8830 Printer