Repair controllers
Fanuc R-30iB / R-30iA
R-30iB · R-30iB Plus · R-30iA · R-J3iC · A05B / A06B / A16B
A failure of the Fanuc controller stops the welding or pick & place line. We repair Servo Amplifier, CPU Board, I/O Unit, iPendant panel and FSSB modules. TP backup before repair. Quote 24h.
Diagnostics included in repair
No-obligation quote
12-month warranty
Courier pickup from all of Europe
Backup TP/programu before repair
Service Fanuc R-30iB — repair scope
Servo Amplifier (A06B-6240)
Servo Drive Repair Fanuc A06B-6240 i A06B-6110: regeneracja modules IGBT, capacitors szyny DC, diagnostics encoders αi/βi. Load testing.
CPU Board i Main Board (A16B)
Repair of A16B-3200/3300 mainboards: capacitor regeneration, power transistors, SRAM memory battery replacement. Restoration of Fanuc Karel/TP system.
iPendant — panel nauczania
Repair of iPendant teach pendant electronics: LCD screen and touch digitizer replacement, E-Stop safety button service, teach pendant cable regeneration.
FSSB — Fanuc Serial Servo Bus
Diagnostics and repair of FSSB bus: communication interface between CPU and servo drives for axes 1–6. Service of FSSB cards and optical connectors.
I/O Unit i cards interfejsowe
Repair of A05B-2350 (I/O Unit Model B), EtherNet/IP, DeviceNet, PROFIBUS DP communication cards. Network configuration restoration after replacement.
Backup i restore programu TP
Before every intervention we create a backup of all TP programs, system parameters, tool data and Karel applications. Programs returned without changes.
What does repair look like for controllers Fanuc?
Transparent process — no downtime, no surprises
Request
+ Fanuc alarm
Module shipping
by courier
Backup TP
+ diagnostics
Quote
no obligation
Repair
& testing
Return
with warranty
Report fault Fanuc R-30iB — no-obligation quote
Provide the Fanuc controller model, module number A06B/A16B and alarm codes. An EFIXLAB specialist will respond promptly.
Dziękujemy! Our specialist will contact you shortly.Frequently asked questions — Fanuc R-30iB
SRVO alarms indicate a problem with the servo drive or encoders. Most common: SRVO-023 (Servo Amp error), SRVO-062 (encoder error). Give us the full alarm number — we will indicate the module to repair.
Yes — we create a full backup of TP programs, system parameters and tool data before every hardware intervention. Welding and pick-and-place programs are returned unchanged.
Yes — we also repair older Fanuc R-J3iB and R-J3iC controllers. Components are available for discontinued A05B/A06B/A16B series.
Fanuc R-30iB Robot Controller Repair — Servo Amplifiers and Control Boards
The Fanuc R-30iB controller is the current-generation platform for Fanuc industrial robots — the world largest installed base of industrial robots with over 800,000 units. The R-30iB integrates a main CPU board, servo amplifier units (A06B series), power supply modules, I/O boards, teach pendant (iPendant), and various communication and application modules. From automotive spot welding to electronic assembly, R-30iB controllers manage the precise, high-speed motion that modern manufacturing demands.
Common R-30iB failures include servo amplifier power transistor degradation (particularly in welding and heavy-payload applications), main CPU board faults, iPendant display and touchscreen problems, power supply module aging, I/O board failures, and communication module malfunctions (EtherNet/IP, DeviceNet, PROFINET). The servo amplifier section experiences the most stress from dynamic robot motion, with IGBT and brake relay failures being the most common repair items. Legacy R-30iA and R-J3iC controllers face additional component aging issues.
At EFIXLAB, we repair Fanuc R-30iB and legacy robot controller electronics. Our service covers servo amplifier board diagnostics and power stage rebuild, CPU board component-level repair, iPendant display and touchscreen restoration, power supply rebuild, I/O board repair, and communication module troubleshooting. We test repaired components with Fanuc-compatible diagnostics and verify servo performance, teach pendant functionality, and I/O communication before return.
Fanuc robot controller repair provides critical cost savings given Fanuc OEM pricing. Servo amplifier repairs typically save 40–65% versus new Fanuc boards, with savings proportionally higher for multi-axis amplifier assemblies. For legacy R-J3 and R-30iA controllers with declining Fanuc parts availability, repair expertise is essential. All Fanuc robot controller repairs include comprehensive testing and our 12-month warranty.