MFJ 223 - 7 In Case of Difficulty

MFJ-223 Vector Impedance Antenna Analyzer
MFJ Enterprises, Inc 17 Version 1
7.0 In Case Of Difficulty: Note that the MFJ-223 has no
user-adjustable alignment controls. Opening the analyzer case
to perform unauthorized procedures could void your warranty.
If unit fails to operate properly, please check the suggestions
below before contacting MFJ for service or replacement.
 Analyzer won't turn on: Battery may be fully
discharged. Plug in to charger, confirm red charge light
comes on, and check unit again after a couple hours.
 Analyzer functions or display acts erratically:
Reboot the processor (see Chapter 2.2 for reboot
instructions).
 All tests show very high or intermittently high
SWR: Check the condition of the analyzer's BNC jack
plus, any adaptors you may be using to transition to
the BNC jack, or condition of antenna connector and
coax.
If you are unable to resolve the problem, please follow the
specific procedures outlined in the Warranty section for further
assistance.