If you encounter this error, you can follow these steps to narrow down the cause: The "Power Cycle":
Fault code 043-343 is a specific chain jam error on Xerox digital presses. It indicates that the paper has successfully passed through the registration rollers but has not triggered the Inverter Exit Sensor within the expected timing window. In simpler terms: the machine fed the paper, but the sensor at the exit of the inverter unit did not detect it on time—or at all.
If these basic steps fail, the issue is almost certainly mechanical.
When the gear moves but the system triggers the 043-343 fault, the printer is mechanically moving but the tracking eye cannot confirm it. Xerox Fault Code 043-343
Check for any jammed paper or debris near the imaging units.
2. Investigating Mechanical and Solenoid Faults (When Link Bar Fails)
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Check the interior of the printer for any scraps of paper, dust buildup, or toner spills near the sensor area that might be blocking the YMC Link Sensor's line of sight. 4. Hardware Inspection (Advanced)
Technicians can enter the Xerox (frequently referred to as CE Mode or Service Mode) to run individual component tests. They will execute a specific chain code (e.g., Component Control codes under the 043 series) to power the main motor independently. If the motor fails to spin during this isolated test, it confirms a electrical or mechanical failure in the drive block. 2. Motor and Drive Board Replacement
While not specific to this exact code, similar "043" errors (like 043-345) often involve the drum motor. Try to ensure they are properly engaged. Check for Obstructions: If these basic steps fail, the issue is
: An operating link bar moves mechanically up and down to engage the primary transfer rollers (1st BTR) for the color drum cartridges.
An engineer will enter the service diagnostics mode and run to initialize the first Bias Transfer Roller (BTR).