Of-3 Fuser Ballast Rap - Xerox 8825 Service Manual

OF-3 Fuser Ballast RAP

Procedure
The customers lights flicker when the Machine is switched on.
Y N
The fuser ballast is operating properly.
The machine has TAG 50 (50Hz only) installed.
Y N
Switch off the printer and disconnect the power cord. Perform the following steps to
check that the ballast resistor circuit is operating correctly:
1. Disconnect the BRN wire from A1Q1-G.
2. Set the meter to read 60 VAC (USO) or 120 VAC (XR).
3. Connect the (+) meter lead to A1Q1-MT2 (BLU wires).
4. Connect the (-) meter lead to A1Q1-MT1 (WHT wires).
5. Connect the Power Cord and 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 resistance. Disconnect the wires on each Ballast Resistor, A1R1 and
A1R2R2, before measuring the resistance. The resistance of each Ballast Resis-
tor, A1R1 and A1R2, is 7 to 9 ohms (USO) or 19 to 21 ohms (RX)
Y N
Replace both Ballast Resistors, A1R1 and A1R2,
Check the following Ballast Resistor wires for continuity;
Table 1 Ballast Resistor Wires
From To Color
A1R1-1 A1K3-8 RED
A1R1-2A A1Q1-B BLU
A1R2-1 A1K3-4 RED
A1R2-2A A1R1-2B BLU
The wires have continuity.
Y N
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. There is +26 VDC present for approximately 5
seconds.
Y N
Connect the (+) meter lead to A2P213-6. Connect the (-) meter lead to
A2P213-7. Reconnect the Power Cord and switch on the printer. There is +26
VDC present for approximately 5 seconds.
Y N
Replace the Driver PWB, A2,
A B C D
Status Indicator RAPs
OF-3 Fuser Ballast RAP
PL 1.2A.
PL 1.1A.
A B C D
Repair the wires.
Replace the Ballast Relay, A1K3,
Replace the Heat Rod Control PWB
01/02
2-16
PL 1.2A.
PL 1.2A.
8825/8830 Printer