Xerox Phaser 7760 Service Manual page 180

009-390 New Black Toner Cartridge
The Control Logic did not detect New Black Cartridge CRUM.
Initial Actions
• Re-install the Toner Cartridge ensuring that the Dispense Motor and the Toner Cartridge
are both engaged.
• Try installing a different Black Toner Cartridge.
• Check that the CRUM is present and not damaged on the Toner Cartridge.
• Check that the CRUM Reader Board and Mounting Bracket are not damaged.
• Check that the Dispense Motor is operating in Diagnostics.
Procedure
Swap the Black CRUM Antenna PWB with the CRUM Antenna PWB of any other color. Does
the Chain Link Error indicate a different color failure?
Y N
Verify that the wiring has continuity between P407 on the Engine Control Board (MCU
PWB) and the Black CRUM Antenna PWB (refer to section 7, BSD, Wiring Diagram -
ure 6). If continuity is OK, replace the Engine Control Board (MCU PWB)
Replace the Black CRUM Antenna PWB
Status Indicator RAP's
009-390, 009-391
(PL
(PL 6.1).
009-391 New Cyan Toner Cartridge
The Control Logic did not detect New Cyan Cartridge CRUM.
Initial Actions
• Re-install the Toner Cartridge ensuring that the Dispense Motor and the Toner Cartridge
are both engaged.
• Try installing a different Cyan Toner Cartridge.
• Check that the CRUM is present and not damaged on the Toner Cartridge.
• Check that the CRUM Reader Board and Mounting Bracket are not damaged.
• Check that the Dispense Motor is operating in Diagnostics.
Procedure
Swap the Cyan CRUM Antenna PWB with the CRUM Antenna PWB of any other color. Does
the Chain Link Error indicate a different color failure?
Y N
Verify that the wiring has continuity between P407 on the Engine Control Board (MCU
Fig- PWB) and the Cyan CRUM Antenna PWB (refer to section 7, BSD, Wiring Diagram -
13.1). ure 6). If the continuity is OK, replace the Engine Control Board (MCU PWB)
Replace the Cyan CRUM Antenna PWB
January 2010
2-144
(PL 6.1).
Phaser 7760 Color Laser Printer
Fig-
(PL 13.1).
Revised