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Verify the displayed block number matches your intended search target block in the part program.

Check all axis positions on the machine display to confirm they are at the expected coordinates for this program block.

Do not assume tool compensation, work offsets, or spindle states are active. Verify all modal conditions.

Verify spindle state (on/off, speed, direction) matches program requirements at this point. Manually start spindle if necessary before continuing.

Press NC START to resume program execution from the current block. Monitor the first few moves closely for unexpected behavior.

Ensure workpiece, fixture, and tool clearances are safe before pressing NC START.

Press RESET to clear the alarm, then access the block search function menu to review the search parameters that were used.

Verify the search mode setting: check if 'Search with Calculation' or 'Search without Calculation' was selected and if it was appropriate for your operation.

Search without calculation does not update modal values - tool offsets, coordinates, and feed rates may not reflect actual program state.

Compare current machine position with expected position at the target block. If position is incorrect, perform a new block search with corrected parameters or return to program start.

If discrepancies exist, cancel the current operation, return machine to safe position, and restart program from a known good point or perform a new block search with calculation active.

Do not continue machining if axis positions or modal states are uncertain.

Review the part program around the current block for subprogram calls (L-commands), GOTO statements, or macro executions that may affect program flow during block search.

Check if the target block is inside a subroutine, loop structure, or conditional statement. Block search behavior may differ in these program sections.

If program structure is complex, consider performing block search 'with calculation' to ensure all preparatory functions and coordinates are properly executed up to the target block.

Block search with calculation will execute all G-code commands but suppress axis motion and spindle/coolant activation.

For recurring issues with specific programs, consult the program structure with your CAM programmer to simplify block search accessibility or add clear restart points with absolute positioning commands.