Simrad AP50 User Manual Page 165

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Maintenance
20221032B 163
PROM extraction
tool
Remove the Programmable Read-Only Memory (PROM)
from the socket with the PROM extraction tool (part number
44139806).
Insert the tool by pressing the two grip pins down into the two
slots in the corners of the socket.
Squeeze the tool and pull out the PROM.
When inserting new PROMS, make sure its cut-off corner
matches with the corner in the socket. Press the PROM gently
into the socket.
The identification tag on the PROM indicates:
- the name of the unit
- the Simrad part number
- the software version
Caution ! Make sure that the correct PROM is mounted in each unit:
PROM for the AP50 Control Unit: P/N 20212189
PROM for the J50 and J50-40
Junction units: P/N 20211934
After changing a PROM, perform a master reset as described
on page 147.
Cut-off
corne
r
Identification tag
Slots
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