Xerox 8830 Service Manual page 38

A D E
N
Connect the (+) meter lead to
A2P213-12 and leave the (-) meter
lead connected to A1Q1-MT1.
Pulses are present.
Y N
| Replace the Driver PWB, A2, PL
1.1.
Repair the wire between terminal G on
A1Q1 and A2P213-11 (wire no. 31).
r
Switch off the printer and disconnect the
power cord. Replace Fuser Triac, A1Q1,
PL 1.2. Then perform the following steps
to check that the ballast resistor circuit is
operating correctly:
1) Disconnect the BRN wire from
A1Q1-G.
Set the meter to read 60
2)
(USO) or 120VAC (XR).
Connect the (+) meter lead to
3)
A1Q1-MT2 (BLU wires).
Connect the (-) meter lead to
4)
A1Q1-MT1 (WHT wires).
Connect the Power Cord and
5)
switch on the printer.
At least 60 VAC (USO) or 120 VAC (RX)
is present.
Y N
Switch off the printer and disconnect
the power cord. Set the meter to read
8 to 21 ohms of
Disconnect the wires on each Ballast
Resistor, A1R1 and A1R2R2, before
measuring the resistance.
The resistance of each Ballast
Resistor, A1R1 and A1R2, Is 7 to 9
ohms (USO) or 19 to 21 ohms (RX)
Y N
A F G H
LL.41, LL.45 RAP
A F G H
Replace both Ballast Resistors,
I A1R1 and A1R2.PL 1.2.
Y
Check the following Ballast Resistor
wires for continuity:
From
A1R1-1
A1R1-2A
A1R2-1
A1R2-2A
The wires have continuity.
Y N
I Repair the wires.
Set the meter to read +26 VDC.
Connect the (+) meter lead to the
Fuser Ballast Power Relay, A1K3-1.
Connect the (-) meter lead to A1K3-0.
Reconnect the Power Cord and switch
on the printer.
VAC
There Is 4-26 VDC present for
approximately 5 seconds.
Y N
Connect the (+) meter lead to
A2P213-6. Connect the {-) meter
lead to A2P213-7. Switch off,
then switch on the printer.
There is +26 VDC present for
approximately 5 seconds.
Y N
Repair the wires.
resistance. Replace the Ballast Relay, A1K3, PL
1.2.
Switch off the printer and disconnect the
Power Cord. Reconnect the wire to the
Fuser Triac A1Q1-G (BRN wire).
procedure is complete.
A
To Color
A1K3-8 RED
A1Q1-BBLU
A1K3-4 RED
A1R1-2B BLU
Replace the Driver PWB, A2,
PL 1.1.
The
1/98
2-4
A
The Thermistor Pad on the Thermistor Pad
Assembly touches the Fuser Roll.
Y N
I Replace the Thermistor Pad Assembly, PL
10.4.
The Thermistor Pad Is
contamination.
Y N
I Clean the Thermistor Pad with a clean
cloth.
Check the wires between
Thermistor, RT1, and the Main PWB, A1, for
continuity.
The wires have continuity.
Y N
I Repair the wires.
Replace the Thermistor Pad Assembly, PL
10.4.
free of
the Fuser
8830