Xerox 8825 Service Manual page 40

Main Drive Gear
Developer Drive
Coupling
Cartridge Drive
Motor
Developer Drive
Gears
Figure 1 Location of Developer Drive Coupling
The Developer Housing Auger and Drive Gears are rotating as the prints are being
made.
Status Indicator RAPs
LL-91 Undertoned Fault RAP
Y N
Go to
The LL-91 code is displayed as the prints are being made.
Drum Drive Gear
Y N
Complete the Service Call.
Use the last print to check the image density. The image density of the 1.0 Solid Square in
the center of the Test Pattern [0955-5] is equal to or less than the 1.20 Density Square on
the Output Reference SIR 495.1.
Y N
Perform the Tone-Up procedure [09-06. If the printer does not tone up, perform the Image
Density Adjustment. Go to
NOTE: : If unable to perform
Enter the code [9-21-4]in order to switch on the Main Drive Motor and the Toner Sensor circuit.
Connect the (+) meter lead to the Main PWB A3J303-14 and the (-) meter lead to A3J303-13.
There is between +5.2 and +6.0 VDC present.
Y N
Connect the (+) meter lead to the Toner Sensor A22Q1P1-1 and the (-) meter lead to
ground. There is less than +10 VDC present.
Y
Check for an open or short circuit to ground in the wire connected to the A22Q1P1-3
(ORN). If the wire is OK, replace the Toner Sensor Calibration.
Replace the Main PWB, A3,
NVM.
01/02
2-12
BSD 4.3, Drum Drive, to repair the drive circuit.
ADJ 9.3
ADJ 9.3, replace the Developer and repeat
N
Disconnect Toner Sensor A22Q1P1 from A22Q1J1. Connect the (+) meter lead to
the Main PWB A3J303-16 and the (-) meter lead to ground. There
+10.0 VDC present.
Y N
Replace the LVPS, A5, PL 1.1A. If the problem persists, replace the Main
PWB, A3, PL 1.1A.
Check for an open or short circuit to ground in the wires connected to A22Q1P1-3
(BRN) and A22Q1P1-4 (YEL). If the wires are OK, replace the Toner Sensor,
A22Q1, PL 9.9. Then run [9-21-6] Toner Sensor Calibration.
PL 1.1A. If the problem persists, enter the code [0926 to reset the
ADJ 9.3.
is less than
8825/8830 Printer