HEIDENHAIN TNC 415 (259 9x0) Service Manual User Manual
Page 173
SERVICE MANUAL TNC 415B/425
Page 168
Issue: 20.08.95
21.7.3 Exchanging the Analogue Board PA 110
a) Observe the exchange instructions in section 21.1!
b) Switch off the main switch.
c) Disengage the connectors at the PA 110.
Disconnect terminal strip!
D-Sub connector
Loosen knurled screw
d) Dismounting the PA 110
The PA 110 may be fixed in two ways:
1) via fixing bar
Dismounting: Use a screwdriver to pry the lock upwards and remove the PA 110 from the bar.
2) via four mounting screws:
Dismounting:
•
Loosen the mounting screws in the housing (
∗
→
)
•
Unscrew the base plate and reassemble the PA for shipping.
e) The new PA 110 is mounted in reverse order:
•
Engage the connectors.
•
Switch on the main switch.
Exchange is now finished.
*
Warning!
Send and store the boards only in the original packaging material that protects
them from acquiring static charge. Never use conventional plastics to wrap the boards in.