01/02
2-12
8825/8830 Printer
LL-91 Undertoned Fault RAP
Status Indicator RAPs
Figure 1 Location of Developer Drive Coupling
The Developer Housing Auger and Drive Gears are rotating as the prints are being
made.
YN
Go to BSD 4.3, Drum Drive, to repair the drive circuit.
The LL-91 code is displayed as the prints are being made.
YN
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.
YN
Perform the Tone-Up procedure [09-06. If the printer does not tone up, perform the Image
Density Adjustment. Go to ADJ 9.3
NOTE: : If unable to perform ADJ 9.3, replace the Developer and repeat ADJ 9.3.
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.
YN
Connect the (+) meter lead to the Toner Sensor A22Q1P1-1 and the (-) meter lead to
ground. There is less than +10 VDC present.
YN
Disconnect Toner Sensor A22Q1P1 from A22Q1J1. Connect the (+) meter lead to
the Main PWB A3J303-16 and the (-) meter lead to ground. There is less than
+10.0 VDC present.
YN
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.
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, PL 1.1A. If the problem persists, enter the code [0926 to reset the
NVM.
Cartridge Drive
Motor
Developer Drive
Gears
Developer Drive
Coupling
Main Drive Gear
Drum Drive Gear
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