HEIDENHAIN TNC 306 Service Manual - Manual (Page 14)

SERVICE MANUAL TNC 306/360
Page 10
HEIDENHAIN Service
Screen Display (blinking error message) Error Cause
MEASURING SYSTEM <AXIS>
DEFECTIVE A
MEASURING SYSTEM <AXIS>
DEFECTIVE B
MEASURING SYSTEM <AXIS>
DEFECTIVE C
A = Signal amplitude error
B = Signal frequency error
C =Error with distance-coded scales
Possible Reasons:
- Encoder not connected
- Cable damaged
- Glass scale contaminated or damaged
- Scanning head defective
- Encoder monitoring system defective
(CLP board)
Encoder check: see section 11.3
Notes