Microprocessor Resetting - Yaesu FT-920 Operating Manual

Microprocessor Reset Procedures
Three levels of microprocessor resetting are avail-
able, only two of which are typically used. These are:
r A reset of all memories, antenna tuner data, and
VFO frequencies to their factory defaults. Menu
settings are not affected by this procedure. To do
this, turn the transceiver off, then press and hold
in the [G ] and [E
EN
hold them in while you turn the [P
on . The VFO-B frequency display area will indi-
cate "I " and a series of "Dashes" will slowly
NITIAL
disappear across the middle of the VFO-A fre-
quency display area. When the initialization pro-
cedure is complete, the frequency displays, newly
reset to 7.000 MHz in the LSB mode, will reap-
pear.
r A reset of just the Menu settings is also possible.
This will not wipe out any other memories, but will
allow you to clear all Menu settings to their origi-
nal factory default values. To do this, turn the trans-
92
] keys on the keyboard and
NT
] switch back
OWER
ceiver off., then press and hold in the [M
[C C ] keys and hold them in while you turn
LEAR LAR
the [P ] switch back on.
OWER
r If the transceiver's microprocessor still is behav-
ing erratically, you may need to perform a com-
plete, "hard" reset of the CPU. To do this, remove
the bottom cover of the transceiver as described
previously. Now set the B
position. Wait about 30 seconds, then plug the
DC cable back into the rear panel DC jack. Turn
the transceiver on, then carefully turn the B
switch on using a non-conducting alignment tool
or a toothpick. The transceiver may now be turned
off, the DC cable removed, and the bottom cover
replaced.
Important Note!
Be extremely careful not to come in contact with any
transceiver internal circuitry while the bottom case is
removed, as possibly dangerous voltages may exist
inside the case.
FT-920 Operating Manual
] and
ENU
switch to the O
ACKUP FF
ACKUP