Orion Car Audio 420 - Manual (Page 44)

44 Orion 420 Weather Station
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Columbia Weather Systems, Inc.
3. Remove the base section and disconnect the flat ribbon cable.
4. Pull out the top of the sensor.
5. Release the small white flap and remove the PTU module.
6. Connect a new PTU module, replace the top, re-connect the flat
ribbon cable, replace the base and tighten the three bottom
screws.
7. Re-install on mounting adapter and reconnect cable connector.
Factory Calibration and Repair Service
Send the device to Columbia Weather Systems, Inc. for calibration and
adjustment, see Section 9: USER SUPPORT INFORMATION for more
information.