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Model 8904A Service
3.
Key in
SHIFT SPECIAL
4
8
ENTER SHIFT END.
The display should read
I
****
Option Firmware Installation
****
f4
Exit
I
Enter installation code:
NOTE
a. The
SPECIAL
key is labeled
in
blue above the
LAST
key. The
END
key
b.
After keying
in
SHIFT
SPECIAL,
the display should be:
fl
Special
#
0
f2
Status
=
Off
f4
Exit
#
0
Last
state recalled
on
power up
is
labeled
in
blue above the
ENTER
key.
c.
After keying in
4
8,
the display should be:
fl
Special
#48 f2
Status =
Off
f4
Exit
#
0
Last
state recalled
on
power up
d.
After keying in
ENTER,
the instrument will beep.
e.
If after keying
in
SHIFT
END,
if
the display is:
****
Option Firmware Installation
****
Option installation not performable.
the instrument will need its serial number entered
or
it
is in need of
repair. Refer to
How to Restore the Serial Number in a Replacement
A2 Assembly.
4.
Locate the Codeword label for the option being restored. The Codeword label
is
located on the
right side of the chassis toward the rear of the instrument.
5.
Key in the Codeword then press
ENTER.
Check the options from the display. The display will
look something like following then after about
10
seconds
it
will time out. (The example shows
Option
003
now installed.)
The presently installed options are:
HP
8904A
Opts
02/01/03
After the
10
second timeout,
if
the Codeword entry has been successful, the display will read
****
Option Firmware Installation
****
Turn
off
LINE
power to invoke options!!
Troubleshooting (Options
001
and
003)
8-47