Ll41, Ll.45 Fuser Warmup Fault Rap - Xerox 8830 Service Manual

LL.41, LL.45 Fuser Warmup
Fault RAP
NOTE: Refer to BSD 10.1 while using this
RAP.
This RAP Is used when the Fuser does not
warm up when the control logic attempts to
increase the heat.
LL.41 is displayed when the Fuser heat does
not Increase to 110° F (43° C) within one
minute.
LL.45 is displayed when the Fuser temp-
erature is greater than 110° F (43° C) but does
not reach the setpoint temperature within the
specified time period.
Initial Actions
• Ensure that the following connectors are
properly seated:
a. Thermistor Assembly RT1J5 / A23P5
b. Thermal Fuse A23XF1
c. Xerographic Module A23J2 / A23P2
d. Fuser Heat Rod A23HR1P2 (blue
wire)
e. Fuser Heat Rod A23HR1P1 (brown
wire)
• Ensure that the correct Fuser Heat Rod is
installed.
• Check the wall outlet for proper line
voltage.
WARNING
Dangerous Voltage
Procedure
NOTE: After entering the code [1004], the
Fuser Power Relay, A1K1, and the Fuser
Power LED, A2CR15 (on the Driver PWB), are
energized for approximately five minutes.
Enter DIAGNOSTICS (General Procedures).
Enter [1004] to test the operation of the Fuser.
After 10 seconds, the Fuser Heat Rod Is
still on.
Y N
Switch off the printer and disconnect the
power cord. Measure the resistance of
the Heat Rod as follows:
A23P1 / A23J1. Connect the meter leads
to A23JM and A23J1-3.
The resistance is less than 30 Ohms.
Y N
Check the wiring between A23J1
and the Fuser Heat Rod (HR1).
The wires have continuity
Y N
I Repair the wires
Replace the Fuser Heat Rod, HR1 (PL
10.2)
Check for ac power from the Fuser Power
Relay as follows: Reconnect A23P1 /
A23J1. Set the meter to read ac voltage
and connect the meter leads to A1K1-4
and A1K1-8. Cheat the front door inter-
lock. Connect the Power Cord and switch
on the printer. Wait 10 seconds.
AC power Is present.
Y N
Check for ac input power to the Fuser
Power Relay, A1K1 as follows:
Connect the meter leads to A1K1-2A
and A1K1-6A.
AC power Is present.
Y N
Refer to BSD 1.1A or 1.1B and
check the ac input power circuit.
Set the meter to read 26 VDC and
connect the {+) meter lead to A1K1-1
and the (-) meter lead to A1K1-0.
Switch off, and the switch on, the
printer.
I
A B C
1/98
2-3
A B C
26 VDC is present.
Y N
Check the Fuser Power Relay On
signal from the Driver PWB, A2,
as follows: Connect the (+) meter
lead to A2J213-1 and the (-) meter
Disconnect lead to A2J213-3.
26 vdc Is present.
Y
I Replace the Driver PWB, A2,
I
Check
between the Driver PWB, A1, and
the Fuser Power Relay, A1K1.
Replace the Fuser Power Relay,
A1K1.PL 1.2.
Switch off the printer and disconnect the
power cord. Check the following wires for
continuity:
From
A1K1-8
A1Q1MT2-A A23P1-1
A1K1-4
The wires have continuity
Y N
Repair the wires
Set the meter to read +2 VDC. Connect
the (+) lead to A1Q1-G (BRN wire) and the
(-) lead to A1Q1-MT1
Reconnect the Power Cord and switch on
the printer. Wait 10 seconds.
NOTE: The bargraph display on the meter
will flicker if pulses are present
Pulses are present
Y N
A D E
N
PL 1.1.
and repair the wiring
To Color
A1Q1MT1-A WHT
BLU
A23P1-3 BLK&BRN
(WHT wires).
LL.41, LL.45 RAP