JRC JMR-92 Series Field Service Manual page 498

4.2.1.5 T/R Control Circuit Board (CMC-1205R) Replacement
[Required Tools]
The tools shown in the following table are required for replacement work.
No Name
1 Flat head
screwdriver
2 Phillips screwdriver
3 Socket wrench*1
Before conducting replacement work, turn Off the circuit breaker for the power supply of the
display unit.
Exercise care not to lose bolts, screws and other parts removed from the radar antenna, as
they will be used again in later steps.
Step 1 Back up the scanner unit data.
Before beginning the replacement procedure, open the service engineer menu of the radar
display unit and back up the scanner unit data (transmission time and motor rotation time).
Unless backing up this data, it will not be possible to maintain continuity in scanner data such
as the magnetron usage time.
Step 2 Remove the cover.
Loosen the four screws and remove the cover. The screws are slotted captive screws.
Use a flat head screwdriver.
Chapter 4 Replacement procedure
Table Required Tools
Size
6 mm
Size #2
Width across flats 13
mm (for M7 screws)
4-278
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