4-13
[Operation check]
After having completed the replacement, follow the procedure below to check the
operation.
(1) Turn on the radar, open the service engineer menu, restore the scanner unit times,
and make sure that the data has been correctly continued before/after the T/R
control circuit board replacement (check the transmission time and the motor rotation
time).
(2) Begin transmission once the countdown is complete and check that the radar
image is correctly displayed.
4.1.9. Receiver (NRG-162A) replacement / NKE-2254
[Required tools]
• A Phillips screwdriver for 4 mm screws
• A Phillips screwdriver for 5 mm screws
• Tools for removing the scanner unit covers (See Section 4.1.2)
(1) Remove the cover on the right (starboard)
side (see Section 4.1.2), remove the cables
connected to the transmitter-receiver unit
and the screws (three M5 screws) holding
the transmitter-receiver unit in place, and
remove the transmitter-receiver unit.
Remove the five
cables.
Remove the three
screws.
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