JRC JMR-92 Series Field Service Manual page 680

Step 3 Change the RIF.
Remove the remaining screws (M3: 5 locations) that fasten the RIF and change the RIF. After
replacing the RIF, assemble to the original condition by repeating the same procedure in the
reverse order. Please make sure to tighten all the screws and connect all the cables back in place.
Securely install the clear cover of the TB838 to prevent it from dropping.
Be careful not to forget to fasten the J841/J842 connector to the cable clamp of the JB with a
cable-tie
.
Step 4 Check operation.
After the replacement of the RIF is completed, turn ON the circuit breaker for the power supply
of the display unit and check the operation as follows.
(1) Check that a cable open error has not occurred.
(2) Start [RADAR] on the Task menu, perform transmission, and check that normal radar
images are displayed.
This completes RIF replacement.
TB838
J831
U V
CQD-2273 RIF
4-459
J837
J839
Chapter 4 Replacement procedure