JRC JMR-92 Series Field Service Manual page 677

If the W853 or W854 cable has been installed, remove the following connector and screw.
J839: Using a flat head screwdriver, hold down the tab of the connector with a "P839"
stamp seal of W853/W854 and pull it out.
Screw at the lower right of the RIF board: Remove the screw (M3) and then disconnect
Next, disconnect the connection cable with the CCU, either the W841 or the W842, from the J831
connector. The W841/W842 cable can be disconnected by cutting off the cable-tie that fastens the
W841/W842 cable to the cable clamp of the JB first and pulling out the W841/W842 cable while
pressing down the tab of the P831 connector next.
Scanner units using the W853/W854 cable:
NKE-2254-6HS
NKE-2103-6/6HS
Chapter 4 Replacement procedure
the crimp terminal with "FG" stamp seal
W853/W854.
(JMR-9225-6XH, JMR-7225-6XH)
(JMR-9210-6X/6XH, JMR-7210-6X/6XH)
W853 / W854
W841 / W842
4-456
of
P839
FG
P831