If you operate a FANUC CNC machine with a A61L-0001-0093 CRT display, you may have noticed it developing dim display. This isn't surprising — these CRTs were designed for 10-15 years of service, and most are now past 20.
Cost Comparison: Repair vs Replace
| Option | Cost | Lifespan |
|---|---|---|
| CRT repair (rebuilt HV section) | $199–398 each | 3-12 months |
| CRT repair (donor tube swap) | $299–499 | 6-18 months |
| Used CRT on eBay | $398–597 | Unknown (already aged) |
| LCD replacement module | $199 (one-time) | 5-7 years continuous |
Over 5 years: CRT repairs cost 995–1990, while a single LCD costs $199. The math is clear.
Technical Details
The A61L-0001-0093 CRT in FANUC systems connects via Honda MR-20M (20-pin) and runs on DC 24V. It's compatible with 0-TC, 0-MC, 18-T controls. The LCD replacement uses the same connector and power — no adapter needed. Price: $199.
Brightness was measured at <100 cd/m² on an aged CRT vs. 350-450 cd/m² on the replacement LCD. Even at maximum brightness, the old CRT can't compete with shop floor lighting.
Installation
- Power off CNC machine and verify power is off with multimeter
- Remove 4 mounting bolts from the CRT bezel
- Disconnect the Honda MR-20M cable
- Connect same cable to the replacement LCD module
- Mount LCD using original screw holes (same pattern)
- Power on — no CNC parameter changes required
Total time: ~15 minutes. The LCD draws DC 24V, matching the original CRT power supply.
Full guide: https://cncdisplay.com/brands/FANUC.html
Important Note
FANUC uses the Honda MR-20M (20-pin) connector. Some aftermarket 'universal' LCDs use different connectors and require adapter boards. The direct replacement uses the same 20-pin plug.
Summary
An LCD module eliminates the FANUC CRT failure cycle permanently. Full FANUC upgrade guide and compatibility info: https://cncdisplay.com/brands/FANUC.html
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