HP 8340b - A5 Keyboard & A7 Lower Keyboard Assembly-Level Troubleshooting; Annunciators

A5
Keyboard
and
A7
Lower
Keyboard
Assembly-Level
Troubleshooting
ANNUNCIATORS
1.
If
one
of
the
front
panel
LEDs
stays
on
all
the
time,
the
trouble
is
the
A6
annunciator latches.
2.
If
one
of
the
front
panel
LEDs
never
comes
on,
even
when
[INSTR PRESET]
is
pressed,
the
cause
is
most
likely
a
bad
LED.
G-10
A5
Keyboard
&
A7
Lower
Keyboard
Assembly-Level Troubleshooting
HP 8340B/41B