During regular operation—including page border printing and periodic head cleaning cycles—excess ink is routed into physical absorption sponges located at the base of the machine.
This is the most sought-after function of the adjustment program. l3256 adjustment program
| Step | Action | Target Value | Tolerance | Responsible | |------|--------|--------------|-----------|--------------| | 1 | Isolate L3256 from main power & signal bus | – | – | Tech Ops | | 2 | Verify mechanical alignment (coupling/bracket) | Runout < 0.05 mm | ±0.01 mm | Mech Eng. | | 3 | Zero sensor feedback (offset calibration) | 0.00 V / 4 mA | ±0.5% | Instr. Tech | | 4 | Adjust gain (P) loop | 2.35 | ±0.05 | Controls Eng. | | 5 | Set integration time (I) | 150 ms | ±5 ms | Controls Eng. | | 6 | Set derivative limit (D) | 0.45 | ±0.02 | Controls Eng. | | 7 | Ramp to 50% load – record response | Settling < 2 sec | – | All | | 8 | Final trim at 100% load | Output = 100% ±1% | – | All | | | 3 | Zero sensor feedback (offset calibration) | 0