Xerox Phaser 7760 Service Manual page 181

009-392 New Magenta Toner Cartridge
The Control Logic did not detect New Magenta 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 Magenta 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 Magenta 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 Magenta CRUM Antenna PWB (refer to Section 7, BSD, Wiring Diagram -
Figure 6). If continuity is OK, replace the Engine Control Board (MCU PWB)
Replace the Magenta CRUM Antenna PWB
Revised
Phaser 7760 Color Laser Printer
(PL
(PL 6.1).
009-393 New Yellow Toner Cartridge
The Control Logic did not detect New Yellow 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 Yellow 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 Yellow 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 Yellow CRUM Antenna PWB (refer to Section 7, BSD, Wiring Diagram -
13.1). Figure 6). If continuity is OK, replace the Engine Control Board (MCU PWB)
Replace the Yellow CRUM Antenna PWB
January 2010
2-145
(PL
(PL 6.1).
Status Indicator RAP's
009-392, 009-393
13.1).