Xerox Phaser 7760 Service Manual page 367

012-961 Mix Stack was Detected
Mix Stack Sensor On was detected during Mix Job.
Initial Actions
• Check the Elevator Motor for operation failure.
• Check the Elevator Motor connectors for connection failure.
Caution must be used when activating Elevator Motor test. When activating this test in the
Down position, there is no limit sensor for downward Stacker travels.
Downward steps increment (or decrement) in single steps, not 5. When continuing in the Down
direction, DO NOT continue after an initial thump sound is heard.
Further downward movements may cause damage to the Stacker Unit/Finisher.
Procedure
Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer
Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics >
OK. Verify that NVRAM location Printer/Finisher 2274 is set to 0. NVM Printer/Finisher 2274
is set to 0.
Revised
Phaser 7760 Color Laser Printer
CAUTION
Figure 1 012-961 Elevator Motor
Y N
Write a value of 0 in Printer/Finisher 2274.
Perform the Elevator Motor test
Y N
Check continuity between the Elevator Motor and Finisher PWB
tinuity check is OK.
Y N
Repair the open circuit or short circuit.
Replace the Elevator Motor
(PL 21.12).
If the problem continues, replace the Finisher PWB
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(PL 21.4). The Elevator Motor energizes.
(PL 21.4). If the problem continues, replace the FInisher PWB
(PL 21.12).
Status Indicator RAP's
(Figure 1). The con-
012-961