NOTE: Due to the extent of the CMM manufacturer's system responsibility, the following is only a basic fault diagnosis. For further diagnosis please contact the OEM.
Red LEDs not lit on head.
Check cable connections.
Check fitting of PC card.
Check secure fitting of head to male kinematic.
Green LED will not illuminate.
Check 24 V power supply.
No movement of head.
Check fitting and lock of arm probe.
Possible overtravel signal when probe changing.
Check alignment of rack ports,
Head powers up briefly then dies.
Check resistance of head power supply cables. Refer to PHS1 installation guide (Renishaw part number H-1000-4044).