Xerox Phaser 7760 Service Manual page 185

009-412 Cyan Toner Cartridge Near Empty
The Cyan Toner Cartridge is nearly empty/empty. This fault requires service only if the mes-
sage appears before the Toner Cartridge is depleted.
NOTE: Continuous running of high density prints can temporarily deplete the toner supply.
Initial Actions
• Ensure that there is toner and the toner is evenly distributed in the cartridge (C).
• Check the Cyan ATC Sensor for blockage or contaminants.
• Check the drive system from the Developer Drive Motor to the Developer Housing (C) for
damage.
Procedure
Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer
Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics >
OK. Perform the Cyan Dispenser Motors test. The Cyan Toner Dispense Motor
energizes.
Y N
Go to Figure 1. There is +24 VDC from J406-7 to GND.
Y N
Go to the +24 VDC Wirenets (Section 7, Wiring Data, +24 VDC Wirenets -
and troubleshoot the problem.
There is +24 VDC from J406-6 to GND.
Y N
Check the wires from J406 to J229 for an open circuit. If the wires are OK, replace
the Cyan Toner Dispense Motor
The voltage from J406-6 to GND drops to less than 1 VDC.
Y N
Replace the MCU PWB (PL 13.1). If the problem continues, replace the I/F PWB
9.1).
Check the wires from J406 to J229 for an open circuit. If the wires are OK, replace the
Cyan Toner Dispense Motor (PL 6.1).
Perform the Developer Motors test. The Developer Motor energizes
Y N
Go to Figure 2. There is +24 VDC from J535-3 to J535-5 on the I/F PWB.
Y N
Go to the +24 VDC Wirenets (Section 7, Wiring Data, +24 VDC Wirenets -
and troubleshoot the problem.
There is +5 VDC from J535-7 to J535-3 on the I/F PWB.
Y N
Go to the +5 VDC Wirenets (Section 7, Wiring Data, +5.5 VDC Wirenets -
and troubleshoot the problem.
A B
Revised
Phaser 7760 Color Laser Printer
(PL 6.1).
(PL 1.1).
A B
Check the wires between J533 and J533 on the I/F PWB and J232 at the Developer Motor
for open or short circuit failures or loose connections. If the wires are OK, replace the
Developer Motor (PL
(MCU PWB) (PL 13.1).
Check ADJ 9.3. The Cyan ATC Sensor check is OK.
Y N
Go the 009-380, 009-381, 009-382,
After checking that no failures are detected during normal operation, go to call closeout.
(PL 6.1)
Figure 1)
Figure 1 009-412 Toner Dispense Motor C
(PL
Figure 1)
Figure 3)
January 2010
2-149
1.1). If the problem continues, replace the Engine Control Board
009-383, ATC Sensor Failure RAP.
Figure 2 009-412 Developer Motor
Status Indicator RAP's
009-412