230-01B3

Check battery voltage

Access MOD function, select 'Service' menu, check battery voltage display. Normal voltage should be >3.0V for lithium batteries.

Battery voltage below 2.7V will trigger S-RAM corruption even if system appears functional

Replace backup battery

Power down system, replace battery on CPU board (typically CR2032 or equivalent). Ensure proper polarity and secure connection.

Replace battery within 10 minutes to prevent further S-RAM data loss

Clear alarm and re-reference

Power cycle system, clear alarm via CE key, perform reference point return (REF function) for affected axis to re-establish position data.

Use manual reference return if automatic REF fails due to corrupted reference marks

Verify power supply stability

Check incoming voltage at main disconnect, verify 24VDC supply voltage is stable between 22-26VDC under load using multimeter.

Monitor voltage during spindle start/stop cycles when power draw fluctuates most

Check UPS or power conditioning

Verify uninterruptible power supply is functioning properly, check for loose connections in power distribution panel.

Ensure proper lockout/tagout procedures before checking electrical connections

Initialize S-RAM and re-reference

Access MOD function, select 'System Parameters', use 'Initialize S-RAM' function, then perform complete reference point return sequence.

Document current machine parameters before S-RAM initialization as some settings may be lost

Perform S-RAM diagnostic test

Access MOD function, navigate to 'Diagnostics' > 'Hardware Tests' > 'Memory Test', run complete S-RAM test cycle.

Run test multiple times as intermittent failures may not appear on first test

Check for physical damage

Visually inspect CPU board for damaged components, corrosion, or burn marks around S-RAM area. Check for proper chip seating.

Use anti-static precautions when handling electronic components

Replace CPU board if necessary

If S-RAM test fails consistently, CPU board replacement is required. Transfer machine parameters from backup before installation.

Always maintain current parameter backup on external storage before hardware replacement

Check axis machine parameters

Access MOD function, select 'Machine Parameters', review MP1013 (axis designation), MP1020 (linear/rotary), and MP1030 (reference system) for affected axis.

Compare current parameters with documented machine setup or parameter backup file

Restore axis parameters from backup

Load known good parameter set from backup file or manually enter correct values based on machine documentation.

Incorrect axis parameters can cause dangerous machine movement - verify all values before activation

Validate and re-reference axis

Activate new parameters, clear alarm, perform reference point return to validate proper axis operation and position tracking.

Test axis movement in small increments before returning to normal operation