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13.
Use the keyboard to enter the Control Unit ID (CID)
into the positions occupied by the underscores. If
the ID is less than 8 characters, enter only as many
characters as you have and the remainder of the field
will
be filled with zeros. As each character is entered,
the corresponding underscore will be replaced by an
asterisk
(*).
If you miskey a character, press the
RESET key and enter the ID again.
14.
Press the ENTER key. The top two rows of the
display screen should change to:
VP
99
yyyyyyyyyyyyyyyy
The VP message means "verification pattern," and
the Y characters represent the Terminal Master Key
Verification value.
If
you have the Terminal Master
Key Verification value for the Terminal Master Key
just entered, make sure the verification value dis-
played is correct; if it is not, press the RESET key
and return to Step 5, and try to enter the Terminal
Master Key again.
15.
Press the ENTER key. When the ENTER key is
pressed (second time), the top two rows of the
display screen should change to:
VP
99
XXXXXXXXXXXXXXXX
The keyboard is now disabled and cannot be reset
until an IML operation is performed. To continue
your operation, turn the 3274 Encrypt/Decrypt
security keylock to the counterclockwise (vertical)
position, remove the security key from the lock,
remove the Encrypt/Decrypt diskette, perform an
IML operation with the proper diskette loaded, and
proceed with your normal operation.
6.S Verifying the Terminal Master Key
Use the following procedure to verify that the Terminal
Master Key has not been changed; this procedure will not
alter the Terminal Master Key. This procedure causes an
indication of whether the Terminal Master Key has been
changed (99, if the Terminal Master Key has not been
changed; 44, if the Terminal Master Key has been changed),
to be displayed at the top center of the display screen on
I the 3178, 3278, or 3279 Display Station attached to
3274 port AO.
1.
If any terminals attached to the 3274 are in use,
notify all terminal operators that the 3274 operation
is going to be interrupted; then wait until all
operations are ended.
2.
Use the 3178,3278 or 3279 attached to 3274 port
AO to perform this procedUre. Locate the 3278/3279
attached to 3274 port AO; make sure it has a key-
board and is turned on.
6-4
3.
An)(
~
397,)(
~
398, or)(
~
399 code
appearing in the Operator Information Area during
this procedure indicates an Encrypt/Decrypt failure.
Refer to the 3274 Problem Determination Guide
for the recovery procedure.
4.
Place the diskette drive operator knob in the open
position (as shown in the illustration) and remove
the diskette. Insert the Encrypt/Decrypt diskette
into the diskette enclosure and place the operator
knob in the closed position.
,
Operator Knob in
the open position
5.
If the 3274 is turned on, press the IML pushbutton
on the 3274 control panel; if the 3274 is turned off,
press the
m
portion of the 3274 On/Off switch.
6.
Make sure the security keylock is in the fully counter-
clockwise (vertical) position; if it is not, turn the key
counterclockwise to the vertical position.
7.
Go to the 3278/3279 display station that is attached
to 3274 port AO. The top two rows of the screen
should contain the following information:
001
XXXXXXXXXXXXXXXX
8.
Use the keyboard to enter the characters
1234567890ABCDEF into the character positions
occupied by the X's. If you miskey any characters,
use the cursor move keys ( -
and -
) on the
right side of the keyboard to move the cursor to the
character position(s) to be corrected.
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