July 2010 28 – 523
28 Exchange of HEIDENHAIN Components
28.1 Important Information
Which components
may be exchanged
in the field?
MC
(Main Computer = housing part with the computer)
CC
(Controller Computer = housing part with controller)
Drive assembly
(Hard disk with adapter board and holding plate in the MC 422)
HDR
(Hard Disk Removable for the MC 422 B/C and the MC 420)
SIK
(System Identification Key)
Fuses
Buffer battery in the control
Fan
Potentiometers
(for feed rate and spindle speed)
Chargeable or nonrechargeable batteries in the touch probe
Stylus, contact plate
Connected HEIDENHAIN units
(e.g., monitors, keyboards, encoders, inverters, motors, handwheels, probes, etc.)
Cables and accessories
HEIDENHAIN expansion cards
(for the Simodrive system)
What could be
exchanged in
addition?
VDU components
Components of the keyboard
Components of the machine operating panel
Observe the safety precautions to avoid injury or damage to persons or machines.
--> See “Safety Precautions” on page 2 – 15.
Always use original HEIDENHAIN components as replacements!
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