Ll-42 Thermal Control Rap - Xerox 8825 Service Manual

A C D
Connect the (+) meter lead to A9P1-2 and leave the (-) meter lead connected to
A1Q1-MTI. Pulses are present.
Y N
Repair the wires.
Check the wiring between the Heat Rod Control PWB (A9) and the Fuser Triac (Q1).
If OK, replace the Heat Rod Control PWB.
Switch off the printer and disconnect the power cord. Replace the Fuser Triac, A1Q1,
1.2A. Then go to OF-3 Fuser Ballast RAP
rectly.
The Thermistor Pad on the Thermistor Pad Assembly touches the Fuser Roll.
Y N
Replace the Thermistor Pad Assembly,
The Thermistor Pad is free of contamination.
Y N
Clean the Thermistor Pad with a clean cloth.
Check the wires between the Fuser Thermistor, RT1, and the Main PWB, A1, for continuity.
The wires have continuity.
Y N
Repair the wires.
Replace the Thermistor Pad Assembly, PL
Status Indicator RAPs
LL-41/LL-45 Fuser Warm-up Fault RAP, LL-42 Ther-
to check that the ballast circuit is operating cor-
PL 10.4.
10.4.

LL-42 Thermal Control RAP

NOTE: Go to BSD 10.1 while using this RAP.
This RAP is used to locate certain problems in the thermal control circuitry in the Fuser area.
Dangerous Voltage
PL
Initial Actions
Switch off, then switch on the printer. If the problem still exists, perform the procedure below.
Procedure
Switch off the printer and disconnect the Power Cord. Disconnect the orange wire from the
Fuser Triac, A1Q1-G. Reconnect the Power Cord and switch on the printer. Wait 10 seconds.
After 5 seconds, the Fuser Heat Rod is off.
Y N
Replace the Fuser Triac, ATQ1,
the Thermistor Pad Assembly J5. Set the meter to read 100ohms. Connect the (+) meter
lead to J5-1. Connect the (-) meter lead to J5-2.
The resistance is greater than 100 ohms.
Y N
Replace the Thermistor Pad Assembly,
Check the wiring between Fuser Thermistor, RT1, and the Main PWB, A2. The
continuity.
Y N
Repair the wires.
Replace the Main PWB, A2, PL 1.1A.
01/02
2-6
WARNING
PL 1.2A. Switch off the printer. Disconnect A23P5 from
PL 10.4.
8825/8830 Printer
wires have