Siemens SINUMERIK 810/820 controls use 9-inch monochrome CRT displays. Our LCD modules are drop-in replacements using the original connector. Compatible models: 6FC3988-7FA20 and SM0901/579417TA.
Find your CRT model below — every one is a drop-in replacement using the original connector. No CNC parameter changes, no rewiring.
| CRT Model | LCD Size |
|---|---|
| 6FC3988-7FA20 | 9" Monochrome CRT |
| SM0901 / 579417TA | 9" Monochrome CRT |
CRT displays on Siemens SINUMERIK 810/820 controls fail progressively: dimming screen, flickering, image retention, and eventual blank output. An LCD replacement module removes every CRT-specific failure point — no flyback transformer, no high-voltage tube, no deflection board. Expect 800x600 resolution, 350+ cd/m² brightness, and 50,000+ hour lifespan versus ~15,000 hours for a CRT.
Each module uses the same connector as the original CRT (20-pin Honda MR-20M on most models). Power off the machine, unplug the old CRT, plug in the LCD, power on. Typical install: 10-15 minutes. Every module ships with a 2-year warranty and lifetime technical support.
Power off the control, unplug the 6FC3988-7FA20 CRT, connect the LCD module, power on. No parameter changes or rewiring needed.
6FC3988-7FA20 (SINUMERIK 810/820) and SM0901/579417TA (SINUMERIK 810M). Both are 9-inch monochrome displays.
No — 840C and 840D use different display sizes and connectors. Contact us with your exact model for a compatible solution.
Looking for another brand or control? Browse the full compatibility matrix (52+ models, 12 brands) or check 8-inch LCD replacements for the most common size.