Fuser (2510) Rap - Xerox 2510 Service Manual

F -.Fuser (2510)
RAP
This Rap i s used if there
is
a problem with
Fuser overtemperature or fuser warmup.
Also a constant L8 or L9.
WARNING
The heat rod and the fuser roll may be hot,
Be careful when working in this area.
Initial Actions
Ensure that the Thermistor Pad
i s
free of contamination.
W/O TAG 5 , Check connectors P/J 2,6,
9, 18, 37, 38, 39, 40, 43, and 47 for
damage and proper seating.
W/ TAG 5, Check connectors P/J 2, 6,
9, 17, 37, 38, 39, 40, 43, and 44 for
damage and, proper seating.
Ensure that the Thermistor Pad
i s
contacting the fuser roll.
WARNING
I
Procedure
CAUTION
To prevent damage to the drive gears;
before entering any diagnostic test
which requires the use o f the main
drive motor
(A);
always enter the codes
(g) fuser and ( I ) cooling fans first, and
then allow the copier to operate for at
least 2 minutes. Then press code (A) to
start the main drive motor.
Enter the diagnostic codes [g and J ]
.
Wait 3
minutes.
The Fuser
Heat Rod
is
on.
Y N
There is less than 5 ohms between P/J38-
1 and PIJ40-1.
I Y N
A B C
C
Check the Fuser Heat Rod for an
open circuit. If there
is
no open
circuit go to FLAG 4 and check the
wiring for an open circuit. If the
Fuser Heat Rod still does not turn on,
check the Over Temperature
Thermostat (A9) for an open circuit.
The Over Temperature Thermostat
(A9)
i s open.
Y N
Go to FLAGS
1
and
3
and check
the wiring for an open circuit. I
no open circuit i s found replace
the Fuser Triac. If the problem
I
persists, replace the LVPS PWB
(PSI). If the problem persists,
replace the Controller PWB (A3).
Replace t h e Over Temperature
Thermostat (A9)
.
Disconnect PIJ 44
and check RTI for a cold resistance
of between 100K and 1 S O K ohms. If
not i n Specification replace the
Thermistor assembly PWB (PL 9.3). If
resistance i s OK go t o FLAG 2 and
check the wiring for an open circuit.
If no open circuit
i s
found, check the
following:
If the fans are not turning, go to
the 1.3 or 1.4 Cooling Fan RAP.
0
Remove the xerographic module
and check the air flow manifold
in order to ensure that it is not
distorted or cracked.
Remove the right side cover. Switch
on the copier and press start. Within
60 seconds after ready, the fuser
heat rod should begin to cycle. If
not, turn
off
immediately and
replace the Fuser Triac. If the
problem persists, replace the LVPS
PWB (A2). If the problem persists,
replace the Controller PWB (A3).
Go to FLAGS 1 thru 4 and check the
wiring for a short circuit. If no short
circuit i s found, replace the Fuser Triac. If
the problem persists, replace the LVPS
PWB (PSI). If the problem persists,
replace the Controller PWB (A3).
Disconnect P/J 44 and check RT1 for a cold
resistance of between l O OK and 150K ohms.
If not
in
Specification replace the Thermistor
assembly PWB (PL 9.3). If resistance is OK go
to FLAG 2 and check the wiring for an open
circuit. If no open circuit i s found, replace
the Contoller PWB.
6/93
F
-
Fuser (2510)
RAP
2-1
6 2510