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Topcon GNSS E03 Base Not Connected Error — Fix Guide
Topcon GNSS E03 Base Not Connected on HiPer SR and HiPer HR: RTK corrections not reaching the rover. Step-by-step fix from an authorized Topcon dealer.
Topcon ERR-01 Error — What It Means & How to Fix It
Topcon ERR-01 on HiPer HR, HiPer V, HiPer II: No satellite lock — fewer than 4 GPS/GNSS satellites are visible to the receiver. Position cannot be computed until additional satellites come into vi
Topcon ERR-02 Error — What It Means & How to Fix It
Topcon ERR-02 on HiPer HR, HiPer V, HiPer II: PDOP too high — satellite geometry is too poor to produce a reliable position. Accuracy is degraded and the receiver refuses to output coordinates.
Topcon ERR-03 Error — What It Means & How to Fix It
Topcon ERR-03 on HiPer HR, HiPer V, HiPer II: RTK initialization failed — the receiver cannot achieve a fixed RTK solution. Operating in float or autonomous mode; survey-grade accuracy is not avai
Topcon ERR-04 Error — What It Means & How to Fix It
Topcon ERR-04 on HiPer HR, HiPer V, HiPer II: Base station connection lost — the rover is no longer receiving RTK correction data. Falling back to float or autonomous mode.
Topcon ERR-05 Error — What It Means & How to Fix It
Topcon ERR-05 on HiPer HR, HiPer V, HiPer II: Antenna fault detected — the receiver has detected a problem with the GNSS antenna, cable, or connector. Satellite signal quality is severely degraded
Topcon ERR-10 Error — What It Means & How to Fix It
Topcon ERR-10 on HiPer HR, HiPer V, HiPer II: Memory card full — the internal or external storage is at capacity. Data logging will fail until space is freed.
Topcon ERR-11 Error — What It Means & How to Fix It
Topcon ERR-11 on HiPer HR, HiPer V, HiPer II: Internal battery low — the receiver battery has dropped below safe operating threshold. Save your work and recharge immediately.
Topcon ERR-20 Error — What It Means & How to Fix It
Topcon ERR-20 on HiPer HR, HiPer V, HiPer II: Firmware corruption detected — the receiver's operating firmware has been damaged. The unit may be unable to start normally.
Topcon GNSS E01 No Fix Error — What It Means & How to Fix It
Topcon GNSS E01 No Fix on HiPer SR, HiPer HR, and Topcon GNSS rovers: receiver cannot compute a position. Step-by-step fix guide from an authorized Topcon dealer.
Topcon GNSS E02 PDOP High Error — What It Means & How to Fix It
Topcon GNSS E02 PDOP High on HiPer SR, HiPer HR: poor satellite geometry reduces position accuracy. Step-by-step fix from an authorized Topcon dealer.
Topcon GNSS E04 RTK Timeout Error — What It Means & How to Fix It
Topcon GNSS E04 RTK Timeout on HiPer HR and HiPer SR: RTK fixed solution could not be achieved within the timeout period. Expert fix guide from an authorized Topcon dealer.
Topcon Machine Control Design File Not Loaded Error — Fix Guide
Topcon MC design file not loaded error: the machine control system cannot find or load the design surface file. Expert fix guide from Express Tools.
Topcon TP-L6G E-01 Plumb Error — Pipe Laser Fix Guide
Topcon pipe laser E-01: plumb sensor out of range, unit tilted beyond self-plumbing limit. Step-by-step fix guide.
Topcon TP-L6G E-02 Grade Sensor Fault — Pipe Laser Fix Guide
Topcon pipe laser E-02: grade sensor fault, precision inclinometer detected an error. Diagnosis and fix guide.
Topcon TP-L6G E-03 Laser Diode Temp Warning — Pipe Laser Fix Guide
Topcon pipe laser E-03: laser diode temperature warning, diode approaching thermal limit in confined underground space. Fix guide.
Topcon TP-L6G E-04 Battery Shutdown — Pipe Laser Fix Guide
Topcon pipe laser E-04: battery low shutdown, unit powering down due to critically low charge. Fix and battery management guide.
Topcon TP-L6G E-05 Target Communication Lost — Pipe Laser Fix Guide
Topcon pipe laser E-05: target communication lost, TP target receiver signal link dropped. Causes and fix guide.
Topcon Pipe Laser E-06 Error — What It Means & How to Fix It
Topcon pipe laser E-06: grade memory error, stored grade settings corrupted. Recovery steps and prevention guide.
Topcon Pipe Laser E-07 Error — What It Means & How to Fix It
Topcon pipe laser E-07: rotation lock error, beam direction lock mechanism faulted. Diagnosis and fix guide.
Topcon Pipe Laser E-10 Error — What It Means & How to Fix It
Topcon pipe laser E-10: remote target not found, laser cannot detect or acquire the TP electronic target. Causes and fix guide.
Topcon RL-H5A E-01 Tilt Error — Rotary Laser Fix Guide
Topcon E-01 on rotary laser: tilt sensor out of range, unit exceeded ±5° self-leveling limit. Step-by-step fix guide.
Topcon RL-H5A E-02 Motor Fault — Rotary Laser Fix Guide
Topcon E-02 motor fault on RL-H5A, RL-SV2S: what it means, field diagnosis steps, and when to send it to a service center.
Topcon RL-H5A E-03 Temperature Error — Rotary Laser Fix Guide
Topcon E-03 on rotary laser: temperature out of range, outside -10°C to 50°C operating window. Step-by-step fix guide.
Topcon RL-H5A E-04 Battery Low — Rotary Laser Fix Guide
Topcon E-04 on rotary laser: battery critically low, below 10% charge, unit will shut down. Step-by-step fix guide.
Topcon RL-H5A E-05 Laser Diode Error — Rotary Laser Fix Guide
Topcon E-05 on rotary laser: laser diode error — diode failure or overheating detected. Causes, diagnosis, and service guidance.
Topcon E-06 Error — What It Means & How to Fix It
Topcon E-06 on rotary laser: memory error, internal settings corrupted. How to factory reset and recover. Step-by-step fix guide.
Topcon E-07 Error — What It Means & How to Fix It
Topcon E-07 on rotary laser: remote control communication error, RC-H4 signal lost. Causes and step-by-step fix guide.
Topcon E-08 Error — What It Means & How to Fix It
Topcon E-08 on rotary laser: leveling timeout, failed to self-level within 3 minutes. Causes and step-by-step fix guide.
Topcon E-09 Error — What It Means & How to Fix It
Topcon E-09 on rotary laser: head rotation motor fault, spinning head stalled or failed. Diagnosis and service guidance.
Topcon RL-H5A E-10 Encoder Error — Rotary Laser Fix Guide
Topcon E-10 on rotary laser: encoder error, rotation position sensor fault. Diagnosis and service guidance.
Topcon Rotary Laser Out of Level / Self-Leveling Failure — Fix Guide
Topcon rotary laser self-leveling failure on RL-H5A, RL-SV2S, RL-200: instrument tilted beyond ±5° or ±10° leveling range. Level the tripod and power cycle to fix.
Topcon Total Station Memory Full Error — Fix Guide
Topcon total station memory full error on GPT, ES, OS, DS series: internal job memory is full, cannot save new measurements. Transfer data and clear jobs to fix.
Topcon Total Station Prism Lost in RC Mode — Fix Guide
Topcon total station prism lost / prism search failure in RC mode on GPT-9000, DS-105, DS-203, IS series: tracking lost on prism during robotic operation. Fix guide.
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