Memory Protection; Memory Protection Programming; Memory Protection Cancelling - Icom IC-A200 Service Manual

SECTION 4
To prevent accidental changes, required memory channels
can be specified as protect channels. The contents of
protect channels CANNOT be changed by a user.

4-1 MEMORY PROTECTION PROGRAMMING

NOTE:
DO NOT push and hold [
9), or other functions are activated.
1) Before setting or cancelling, extract the transceiver from
the mounting rack and open the top cover. Then connect
appropriate connector to the transceiver for operation.
2) Push and hold [CH] until the memory channel number
blinks.
� �
3) Rotate the large or small tuning knob to select a memory
channel to be programmed as a protect channel.
� �
4) Push [ ].
• Frequency content or " − − − − " blinks.
� �
5) Rotate the large and small tuning knobs to select a
desired frequency.
� �
6) Ground the memory protection pin (J7 on the MAIN
UNIT).

MEMORY PROTECTION

] in steps 4), 7) and
��
7) Push [ ].
� �
8) Unground the memory protection pin.
• The memory channel is now programmed as a protect
channel.
9) Confirm that the frequency content DOES NOT blink
even when [
� �

4-2 MEMORY PROTECTION CANCELLING

NOTE: DO NOT push and hold [
7), or other functions are activated.
1) Push and hold [CH] until the memory channel number
blinks.
� �
2) Rotate the large or small tuning knob to select a protect
channel to be cancelled.
� �
3) Ground the memory protection pin as shown in the
diagram at left below.
4) Push [ ].
• Frequency content blinks.
� �
5) Unground the memory protection pin.
6) Push [ ].
• The memory protection is now cancelled.
� �
7) Confirm that the frequency content blinks when [
is pushed.
� �
4 - 1
] is pushed.
] in steps 4), 6) and
]