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4-3 Troubleshooting flow chart
Check all items in the following section to secure normal communication at all times. If any unusual
phenomenon occurs in the equipment, send appropriate information to JRC service network to get advice
or to request for repair with the results of these items.
Is the Power lamp
blinking after
Power switch of
IME turned ON?
YES
Is it turned to light
after 20 seconds?
YES
EME:NAF-742LT/NAF-253LT
Is SYNC lamp
lighting after 2 to
10 minutes passed?
YES
Continued to next page
Start
Is EXT PSU
normal?
NO
Is Only SYNC
lamp
blinking and
NO
all other lamps
are lighting?
YES
Confirm the type of
EME and IME
IME:NTF-782LT
NO
Is there any
blocking?
YES
Confirm again with changing
ship's direction
Fig4-3a Troubleshooting Flowchart (1/2)
NO
YES
Are all lamps
lighting after 5
minutes passed?
NO
YES
Is the connector of
IME back panel is
DC24V output?
YES
Is the EME-IME
cable normal?
Is the DC resistance
of EME pig tail cable
about 7kΩ？
Contact JRC
NO
Is the Ocean Region
setting is incorrect?
Confirm again with setting
of correct Ocean Region
4-2
EXT PSU
Replacement
IME
Replacement
NO
NO
EME-IME
NO
Cable
Replacement
YES
NO
Replacement
YES
NO
YES
EME
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